Common use of Line Sharing Clause in Contracts

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLC’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLC, solely for BTLLC’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC for BTLLC’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLC; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLC’s Rhythms’ provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCRhythms, solely for BTLLC’s Rhythms’ own use, the frequency range above the voice band on the same copper Loop required by BTLLC Rhythms to provide such services. This Section 4 Agreement addresses Line Sharing line sharing over loops that are entirely copper loops.. The Parties do not intend anything in this Agreement to prejudice Rhythms’ position that line sharing may occur on loops constructed of fiber optic cable, digital loop carrier electronics, and copper distribution cable.. 4.2 In accordance with, but only to To the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Rhythms for BTLLC’s Rhythms’ provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC CLEC on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Rhythms at the rates set forth in Appendix A. These rates and/or rate structures shall be considered interim in nature until they have been approved by the Pricing AttachmentCommission or otherwise allowed to go into effect as a result of a proceeding before the Commission, whether initiated by Rhythms or Verizon, in which Rhythms is offered an opportunity to serve discovery and cross examine witnesses on the methodology and assumptions supporting Verizon’s proposed rates and rate structures, including a tariff investigation, cost proceeding, arbitration or other evidentiary proceeding. If, as a result of any such proceeding, the Commission should approve (or otherwise allow to go into effect) permanent rates and/or rate structures different than those shown in Appendix A, all such approved or effective permanent rates and/or rate structures shall supercede those shown in Appendix A. The permanent rates shall be effective retroactively to the effective date of the agreement.. The Parties shall true-up any amounts previously invoiced as if the permanent rates had been in effect as of that date. Each Party shall invoice the other for any amounts due to it as a result of such true-up, and all such invoices shall be paid in accordance with the Billing and Payment provisions of this Agreement 4.4 In addition to the recurring and nonrecurring charges shown in the Pricing Attachment Appendix A for Line Sharing itself, the following rates shown in the Pricing Attachment Appendix A and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCRhythms and not covered by Appendix A; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, and trouble isolation charges, and pair swap/line and station transfer charges. 4.4 4.5 The following ordering procedures shall apply to Line Sharing: 4.4.1 4.5.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Rhythms must utilize the mechanized or and manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below 4.5.5. below, to make this determination. 4.4.2 BTLLC 4.5.2 Rhythms shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 4.5.3 If the Loop is prequalified by BTLLC Rhythms through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s Rhythms’ valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an a LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops). 4.4.4 4.5.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order a LSR confirmation can be returned following receipt of BTLLC’s Rhythms’ valid, accurate request. Verizon may in good faith require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. Nonetheless, ▇▇▇▇▇▇▇’s performance will be subject to the carrier-to-carrier performance standards established for Engineering Queries. 4.4.5 4.5.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Rhythms orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 4.5.6 The standard provisioning interval for Line Sharing shall be three (3) Business Days. This interval is initiated once the required pre- qualification has been completed. The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. For example, Pair Swaps or Line Station Transfers will require no less than an additional three (3) Business Days to complete. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.5.5. above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Rhythms be longer than the interval applied to any Affiliate of Verizon. 4.5.7 A Pair Swap or Line and Station Transfer done in conjunction with a Line Share Arrangement request involves the reassignment and relocation of an existing Verizon end user voice service from a Digital Loop Carrier ("DLC") facility that is not qualified for line sharing to a spare or freed-up qualified non-loaded copper facility. Line Sharing arrangements that require (A freed-up pair swaps is a qualified, copper pair already assigned.) Such a swap or line and station transfers transfer would be done in order to free up facilities support the requested service transmission parameters. This new process will have be applied to all cases where Verizon encounters the customer on DLC and where Verizon can automatically reassign the customer to a provisioning interval spare copper facility. This effort involves additional installation work including a dispatch and will require an additional charge. Rhythms acknowledges, however that the rate for such charge is not set forth in Appendix A as of no less than six (6) Business Daysthe Effective Date, but that Verizon is developing such rate. Verizon shall notify Rhythms in writing of such Rate in accordance with, and subject to, the notices provision of the Interconnection Agreement. 4.4.7 BTLLC 4.5.8 Rhythms must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) SBN and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) POT Bay, Collocation node, or for splitter placement, placement must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties parties or specified in this Agreement.agreement, such as in section 4.7 4.4.8 4.5.9 The Parties recognize that Line Sharing is an offering that requires both Parties to will make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Rhythms will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 4.6 To the extent required by Applicable Law, BTLLC Rhythms shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Rhythms must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 . As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Rhythms for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s Rhythms’ deployment of additional Advanced Services shall be subject to the applicable FCC Rulesrules and regulations of the FCC. 4.7 BTLLC Rhythms may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC Rhythms is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC (The Siecor splitter proposed for use by Rhythms as of May 12, 2000 is deemed by both Parties to be compliant with ANSI T1.413.) Rhythms is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) DSLAM equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) CPE for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tand/or

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCICG’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCICG, solely for BTLLCICG’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC ICG to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC ICG for BTLLCICG’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC ICG on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC ICG at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCICG; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC ICG must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC ICG shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC ICG through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCICG’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voicetwenty-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tfour

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCECSI’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCECSI, solely for BTLLCECSI’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC ECSI to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC ECSI for BTLLCECSI’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC ECSI on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC ECSI at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCECSI; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC ECSI must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC ECSI shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC ECSI through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCECSI’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loopsloops except as otherwise required by Applicable Law. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCECSI’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC ECSI orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC ECSI be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC ECSI must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC ECSI will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC ECSI shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC ECSI must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘Line Sharing’ " is an arrangement by which Verizon facilitates BTLLC’s Pac-West's provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCPac-West, solely for BTLLC’s Pac-West's own use, the frequency range above the voice band on the same copper Loop required by BTLLC Pac-West to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only . Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Pac-West for BTLLC’s Pac-West's provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Pac-West in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s 's dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Pac-West on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 . Verizon shall make Line Sharing available to BTLLC Pac-West at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s Verizon's applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCPac-West; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 . The following ordering procedures shall apply to Line Sharing: 4.4.1 : To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Pac-West must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC . Pac-West shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 . If the Loop is prequalified by BTLLC Pac-West through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s Pac-West's valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 . If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s Pac-West's valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 . If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Pac-West orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s 's generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Verizon's Customers over such Loops. 4.4.6 . The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, business days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Pac-West be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business Days. 4.4.7 BTLLC Verizon. Pac-West must provide all required Collocation, CFA, Special ▇B▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 . The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Pac-West will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 . To the extent required by Applicable Law, BTLLC Pac-West shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Pac-West must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 . As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Pac-West for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s Pac-West's deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC . Pac-West may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Verizon's Customer. BTLLC Pac-West is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC Pac-West is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Pac-West and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Pac-West must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Pac-West submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in Pac-West Collocation Area In this configuration, the BTLLCPac-West-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Pac-West in its own Collocation space within the Customer’s 's serving End Office. The Verizon -provided Verizon-provided dial tone is routed through the splitter in the BTLLC Pac-West Collocation area. Any rearrangements will be the responsibility of BTLLCPac-West. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCPac-West-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s 's serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of Pac-West's Collocation arrangement with Verizon's network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at Pac-West's election, by a Verizon -approved Verizon-approved vendor designated by BTLLCPac-West. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of Pac-West's Collocation arrangement with Verizon's network, BTLLC the Pac-West provided splitter will be located via installed (mounted) in a virtualrelay rack between the Pac-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from West Collocation arrangement and the MDF to the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the Pac-West Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or Verizon, or, at Pac-West's election, by a Verizon -approved vendorVerizon-approved vendor designated by Pac-West. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Pac-West upon completion of the required augment. 4.7.1 work. Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Pac-West must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 apply. Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s Pac-West's collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Pac-West must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s 's applicable Tariff, an interval of seventy-six (76) Business Days business days shall apply. 4.8 BTLLC . Pac-West will have the following options for testing shared Loops: 4.8.1 : In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of Pac-West Collocation arrangement with Verizon's network, the following options shall be available to BTLLC. 4.8.1.1 Pac-West. Under Splitter Option 1A, BTLLC Pac-West may conduct its own physical tests of the shared Loop from BTLLC’s Pac-West's collocation area. If it chooses to do so, BTLLC Pac-West may supply and install a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLCPac-West-provided test equipment may not interrupt an in-in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCPac-West-provided test head would will be installed in Pac-West's Collocation area between the “"line” " port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 . Under Splitter Option 2C, upon request by Pac-West, either Verizon or or, at Pac-West's election, a Verizon - Verizon-approved vendor selected by BTLLC may Pac-West will install a BTLLC- Pac-West-provided test head to enable BTLLC Pac-West to conduct remote physical tests of the shared Loop. This optional BTLLC- Pac-West-provided test head may will be installed at a point between the “"line” " port of the splitter and the Verizon -provided Verizon-provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCPac-West-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCPac-West-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCPac-West-provided test head, and will direct all required activity. 4.8.1.3 . Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided Verizon-provided test head, and, upon request, will provide these test results to BTLLC Pac-West during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 . Under either Splitter Option, upon request by Pac-West, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tm

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCBudget Phone’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCBudget Phone, solely for BTLLCBudget Phone’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Budget Phone to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Budget Phone for BTLLCBudget Phone’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Budget Phone in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Budget Phone on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Budget Phone at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCBudget Phone; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Budget Phone must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC Budget Phone shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Budget Phone through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCBudget Phone’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCBudget Phone’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Budget Phone orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Budget Phone be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC Budget Phone must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Budget Phone will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Budget Phone shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Budget Phone must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Budget Phone for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCBudget Phone’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Budget Phone may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC Budget Phone is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC Budget Phone is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Budget Phone and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Budget Phone must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Budget Phone submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in Budget Phone Collocation Area In this configuration, the BTLLCBudget Phone-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Budget Phone in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon- provided dial tone is routed through the splitter in the BTLLC Budget Phone Collocation area. Any rearrangements will be the responsibility of BTLLCBudget Phone. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCBudget Phone-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of Budget Phone’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at Budget Phone’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCBudget Phone. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of Budget Phone’s Collocation arrangement with Verizon’s network, BTLLC the Budget Phone provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to Budget Phone Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the Budget Phone Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or Verizon, or, at Budget Phone’s election, by a Verizon -approved vendorVerizon-approved vendor designated by Budget Phone. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Budget Phone upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Budget Phone must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECBudget Phone’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Budget Phone must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC Budget Phone will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of Budget Phone Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCBudget Phone. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCReconex’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCReconex, solely for BTLLCReconex’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Reconex to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Reconex for BTLLCReconex’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Reconex on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Reconex at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s ‘s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCReconex; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Reconex must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC Reconex shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Reconex through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCReconex’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCReconex’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Reconex orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s ‘s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Reconex be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC Reconex must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Reconex will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Reconex shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Reconex must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Reconex for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCReconex’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Reconex may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s ‘s Customer. BTLLC Reconex is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "“dial tone" ” stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC Reconex is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Reconex and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Reconex must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Reconex submits an order for Line Sharing. Splitter Option 1: Splitter in Reconex Collocation Area In this configuration, the BTLLCReconex-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Reconex in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Reconex Collocation area. Any rearrangements will be the responsibility of BTLLCReconex. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCReconex-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Reconex Collocation and the splitter. At BTLLCReconex’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCReconex. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC Reconex provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC Reconex does not have access. BTLLC Reconex shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's Reconex’s collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Reconex upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Reconex must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Reconex must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC Reconex will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCReconex. 4.8.1.1 Under Splitter Option 1, BTLLC Reconex may conduct its own physical tests of the shared Loop from BTLLCReconex’s collocation area. If it chooses to do so, BTLLC Reconex may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLCReconex-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCReconex-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved -approved vendor selected by BTLLC Reconex may install a BTLLC- Reconex-provided test head to enable BTLLC Reconex to conduct remote physical tests of the shared Loop. This optional BTLLC- Reconex-provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCReconex-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCReconex-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCReconex-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC Reconex during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC Reconex via RETAS after the service order has been completed. BTLLC Reconex will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC Reconex will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC Reconex through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tReconex ha

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLC’s Rhythms’ provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCRhythms, solely for BTLLC’s Rhythms’ own use, the frequency range above the voice band on the same copper Loop required by BTLLC Rhythms to provide such services. This Section 4 Agreement addresses Line Sharing line sharing over loops that are entirely copper loops.. The Parties do not intend anything in this Agreement to prejudice Rhythms’ position that line sharing may occur on loops constructed of fiber optic cable, digital loop carrier electronics, and copper distribution cable.. 4.2 In accordance with, but only to To the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Rhythms for BTLLC’s Rhythms’ provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC CLEC on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Rhythms at the rates set forth in Appendix A. These rates and/or rate structures shall be considered interim in nature until they have been approved by the Pricing AttachmentCommission or otherwise allowed to go into effect as a result of a proceeding before the Commission, whether initiated by Rhythms or Verizon, in which Rhythms is offered an opportunity to serve discovery and cross examine witnesses on the methodology and assumptions supporting Verizon’s proposed rates and rate structures, including a tariff investigation, cost proceeding, arbitration or other evidentiary proceeding. If, as a result of any such proceeding, the Commission should approve (or otherwise allow to go into effect) permanent rates and/or rate structures different than those shown in Appendix A, all such approved or effective permanent rates and/or rate structures shall supercede those shown in Appendix A. The permanent rates shall be effective retroactively to the effective date of the agreement.. The Parties shall true-up any amounts previously invoiced as if the permanent rates had been in effect as of that date. Each Party shall invoice the other for any amounts due to it as a result of such true-up, and all such invoices shall be paid in accordance with the Billing and Payment provisions of this Agreement 4.4 In addition to the recurring and nonrecurring charges shown in the Pricing Attachment Appendix A for Line Sharing itself, the following rates shown in the Pricing Attachment Appendix A and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCRhythms and not covered by Appendix A; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, and trouble isolation charges, and pair swap/line and station transfer charges. 4.4 4.5 The following ordering procedures shall apply to Line Sharing: 4.4.1 4.5.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Rhythms must utilize the mechanized or and manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below 4.5.5. below, to make this determination. 4.4.2 BTLLC 4.5.2 Rhythms shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 4.5.3 If the Loop is prequalified by BTLLC Rhythms through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s Rhythms’ valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an a LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops). 4.4.4 4.5.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order a LSR confirmation can be returned following receipt of BTLLC’s Rhythms’ valid, accurate request. Verizon may in good faith require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. Nonetheless, Verizon’s performance will be subject to the carrier-to-carrier performance standards established for Engineering Queries. 4.4.5 4.5.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Rhythms orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 4.5.6 The standard provisioning interval for Line Sharing shall be three (3) Business Days. This interval is initiated once the required pre- qualification has been completed. The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. For example, Pair Swaps or Line Station Transfers will require no less than an additional three (3) Business Days to complete. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.5.5. above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Rhythms be longer than the interval applied to any Affiliate of Verizon. 4.5.7 A Pair Swap or Line and Station Transfer done in conjunction with a Line Share Arrangement request involves the reassignment and relocation of an existing Verizon end user voice service from a Digital Loop Carrier ("DLC") facility that is not qualified for line sharing to a spare or freed-up qualified non-loaded copper facility. Line Sharing arrangements that require (A freed-up pair swaps is a qualified, copper pair already assigned.) Such a swap or line and station transfers transfer would be done in order to free up facilities support the requested service transmission parameters. This new process will have be applied to all cases where Verizon encounters the customer on DLC and where Verizon can automatically reassign the customer to a provisioning interval spare copper facility. This effort involves additional installation work including a dispatch and will require an additional charge. Rhythms acknowledges, however that the rate for such charge is not set forth in Appendix A as of no less than six (6) Business Daysthe Effective Date, but that Verizon is developing such rate. Verizon shall notify Rhythms in writing of such Rate in accordance with, and subject to, the notices provision of the Interconnection Agreement. 4.4.7 BTLLC 4.5.8 Rhythms must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) SBN and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) POT Bay, Collocation node, or for splitter placement, placement must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties parties or specified in this Agreement.agreement, such as in section 4.7 4.4.8 4.5.9 The Parties recognize that Line Sharing is an offering that requires both Parties to will make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Rhythms will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 4.6 To the extent required by Applicable Law, BTLLC Rhythms shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Rhythms must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 . As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Rhythms for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s Rhythms’ deployment of additional Advanced Services shall be subject to the applicable FCC Rulesrules and regulations of the FCC. 4.7 BTLLC Rhythms may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC Rhythms is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC (The Siecor splitter proposed for use by Rhythms as of May 12, 2000 is deemed by both Parties to be compliant with ANSI T1.413.) Rhythms is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) DSLAM equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) CPE for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tand/or

Line Sharing. 4.1 14.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCFirst Choice’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCFirst Choice, solely for BTLLCFirst Choice’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC First Choice to provide such services. This Section 4 14 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 14.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC First Choice for BTLLCFirst Choice’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (- a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC the CLEC on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 14.3 Verizon shall make Line Sharing available to BTLLC First Choice at the rates set forth in the Pricing AttachmentAgreement and Exhibit A. Notwithstanding anything else set forth in the Agreement, Verizon shall provide Line Sharing subject to charges based on rates and/or rate structures that are consistent with Applicable Law (rates and/or rate structures for access to Line Sharing, collectively, the "Rates" and, individually, a "Rate"). Certain of these Rates are set forth in Exhibit A, which Rates Verizon shall charge First Choice and First Choice agrees to pay to Verizon. First Choice acknowledges, however, that certain Rates are not set forth in Exhibit A as of the Effective Date but that Verizon is developing such Rates and Verizon has not finished developing such Rates as of the Effective Date. When Verizon finishes developing a Rate not included in Exhibit A as of the Effective Date, Verizon shall notify First Choice in writing of such Rate in accordance with, and subject to, the notices provision of the Agreement and thereafter shall bill First Choice, and First Choice shall pay to Verizon, for services provided under this Section 14 on the Effective Date and thereafter in accordance with such Rate. Any notice provided by Verizon to First Choice pursuant to this Section 14.3 shall be deemed to be a part of Exhibit A immediately after Verizon sends such notice to First Choice and thereafter. 14.4 In addition to the recurring and nonrecurring charges shown in the Pricing Attachment Agreement and Exhibit A and pursuant to Section 14.3 for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCFirst Choice; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. These rates may be contained in Exhibit A, an applicable Verizon tariff, and/or the Agreement. 4.4 14.5 The following ordering procedures shall apply to Line Sharing: 4.4.1 14.5.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC First Choice must utilize the mechanized or and manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below paragraph (v) below, to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. ‌ 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCBudget Phone’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCBudget Phone, solely for BTLLCBudget Phone’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Budget Phone to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Budget Phone for BTLLCBudget Phone’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Budget Phone in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Budget Phone on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Budget Phone at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCBudget Phone; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Budget Phone must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC Budget Phone shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Budget Phone through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCBudget Phone’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCBudget Phone’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Budget Phone orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement Agreement‌ does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Budget Phone be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC Budget Phone must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Budget Phone will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. ‌ 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCECI’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade Voice Grade service to that Customer by making available to BTLLCECI, solely for BTLLCECI’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC ECI to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1 of this Attachment, Verizon shall provide Line Sharing to BTLLC ECI for BTLLCECI’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations. Verizon shall provide Line Sharing to ECI in accordance with, on but only to the terms and conditions set forth hereinextent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade Voice Grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC ECI on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC ECI at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring non-recurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed or Conditioned Loop) charges; (iii) charges associated with Collocation collocation activities requested by BTLLCECI; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC ECI must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL Compatible Loops, Digital Designed Loops, as referenced in Section 4.4.5 below Loops and Conditioned Loops to make this determination. 4.4.2 BTLLC ECI shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order Service Order or other mutually agreed upon type of service orderService Order. Such service order Service Order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC ECI through the Verizon Loop prequalification databasetools, and if a positive response is received and followed by receipt of BTLLCECI’s valid, accurate and pre-qualified service order Service Order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. In such case, Verizon shall initiate provisioning and installation in accordance with the terms pertaining to xDSL Compatible Loops, Digital Designed Loops and Conditioned Loops pursuant to Section 3.2.5 of this Attachment. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCECI’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC ECI orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Conditioned Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by‌ Applicable Law, that such conditioning is likely to degrade significantly the voiceVoice-grade Grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed and Conditioned Loops, as referenced in Section 4.4.5 aboveof this Attachment. Except The standard provisioning interval for the Line Sharing arrangement shall be as otherwise set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days; (b) the standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval for the Line Sharing arrangement that is required by Applicable Law, if any. The standard provisioning intervals interval for the Line Sharing arrangement initially shall be the commence only once any requested engineering and conditioning tasks have been completed. The standard provisioning interval of six (6) Business Days applicable shall not apply where a Line and Station Transfer is performed pursuant to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not requiredSection 3.2.5.2. In no event shall the Line Sharing interval applied offered to BTLLC ECI be longer than the interval applied offered to any similarly situated Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC ECI must provide all required Collocationcollocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC ECI will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. ‌ 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCNOS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCNOS, solely for BTLLCNOS’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC NOS to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC NOS for BTLLCNOS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC NOS on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC NOS at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCNOS; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC NOS must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC NOS shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC NOS through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCNOS’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCNOS’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC NOS orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops.Loops.‌ 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC NOS be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC NOS must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC NOS will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC NOS shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC NOS must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC NOS for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCNOS’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC NOS may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC NOS is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC NOS is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC NOS and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC NOS must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC NOS submits an order for Line Sharing. In this configuration, the BTLLCNOS-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC NOS in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC NOS Collocation area. Any rearrangements will be the responsibility of BTLLCNOS. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCNOS-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC NOS Collocation and the splitter. At BTLLCNOS’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCNOS. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC NOS provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC NOS does not have access. BTLLC NOS shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLCNOS's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC NOS upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC NOS must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC NOS must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC NOS will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCNOS. 4.8.1.1 Under Splitter Option 1, BTLLC NOS may conduct its own physical tests of the shared Loop from BTLLCNOS’s collocation area. If it chooses to do so, BTLLC NOS may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLCNOS-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCNOS-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC NOS may install a BTLLC- NOS- provided test head to enable BTLLC NOS to conduct remote physical tests of the shared Loop. This optional BTLLC- NOS- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCNOS-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCNOS-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCNOS-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC NOS during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC NOS via RETAS after the service order has been completed. BTLLC NOS will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC NOS will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC NOS through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC NOS has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC NOS will each dispatch a ttechnician to an agreed-upon point to conduct a joint meet test to identify and resolve the error or trouble. Verizon may asse

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCNOS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCNOS, solely for BTLLCNOS’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC NOS to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC NOS for BTLLCNOS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC NOS on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC NOS at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCNOS; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC NOS must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC NOS shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC NOS through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCNOS’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCNOS’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC NOS orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC NOS be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC NOS must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC NOS will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC NOS shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC NOS must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC NOS for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCNOS’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC NOS may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC NOS is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC NOS is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC NOS and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC NOS must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC NOS submits an order for Line Sharing. In this configuration, the BTLLCNOS-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC NOS in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC NOS Collocation area. Any rearrangements will be the responsibility of BTLLCNOS. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCNOS-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC NOS Collocation and the splitter. At BTLLCNOS’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCNOS. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC NOS provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC NOS does not have access. BTLLC NOS shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLCNOS's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC NOS upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC NOS must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC NOS must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC NOS will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCNOS. 4.8.1.1 Under Splitter Option 1, BTLLC NOS may conduct its own physical tests of the shared Loop from BTLLCNOS’s collocation area. If it chooses to do so, BTLLC NOS may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLCNOS-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCNOS-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC NOS may install a BTLLC- NOS- provided test head to enable BTLLC NOS to conduct remote physical tests of the shared Loop. This optional BTLLC- NOS- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCNOS-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCNOS-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCNOS-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC NOS during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC NOS via RETAS after the service order has been completed. BTLLC NOS will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC NOS will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC NOS through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC NOS has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC NOS will each dispatch a ttechnician to an agreed-upon point to conduct a joint meet test to identify and resolve the error or trouble. Verizon may assess

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCExcel’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCExcel, solely for BTLLCExcel’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Excel to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Excel for BTLLCExcel’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Excel in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Excel on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Excel at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCExcel; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Excel must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC Excel shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Excel through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCExcel’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCExcel’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Excel orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Excel be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC Excel must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Excel will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Excel shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Excel must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Excel for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCExcel’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Excel may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC Excel is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC Excel is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Excel and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Excel must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Excel submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in Excel Collocation Area In this configuration, the BTLLCExcel-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Excel in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon-provided dial tone is routed through the splitter in the BTLLC Excel Collocation area. Any rearrangements will be the responsibility of BTLLCExcel. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCExcel-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of Excel’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at Excel’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCExcel. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of Excel’s Collocation arrangement with Verizon’s network, BTLLC the Excel provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to Excel Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the Excel Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or Verizon, or, at Excel’s election, by a Verizon -approved vendorVerizon-approved vendor designated by Excel. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Excel upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Excel must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECExcel’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Excel must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC Excel will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of Excel Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCExcel. 4.8.1.1 Under Splitter Option 1A, BTLLC Excel may conduct its own physical tests of the shared Loop from BTLLCExcel’s collocation area. If it chooses to do so, BTLLC Excel may supply and install a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLC-Excel- provided test equipment may not interrupt an in-in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-Excel- provided test head would will be installed in Excel’s Collocaton area between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2C, upon request by Excel, either Verizon or or, at Excel’s election, a Verizon - Verizon-approved vendor selected by BTLLC may Excel will install a BTLLC- Excel-provided test head to enable BTLLC Excel to conduct remote physical tests of the shared Loop. This optional BTLLC- Excel-provided test head may will be installed at a point between the “line” port of the splitter and the Verizon -provided Verizon-provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCExcel-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCExcel-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCExcel-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided Verizon-provided test head, and, upon request, will provide these test results to BTLLC Excel during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, upon request by Excel, Verizon will make MLT access available to BTLLC Excel via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tha

Line Sharing. ‌ 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCBuckeye’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCBuckeye, solely for BTLLCBuckeye’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Buckeye to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Buckeye for BTLLCBuckeye’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Buckeye in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Buckeye on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Buckeye at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCBuckeye; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Buckeye must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC Buckeye shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Buckeye through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCBuckeye’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCBuckeye’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Buckeye orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such such‌ conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Buckeye be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC Buckeye must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Buckeye will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCGNAPS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCGNAPS, solely for BTLLCGNAPS’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC GNAPS to provide such services. This Section 4 0000 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC GNAPS for BTLLCGNAPS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 0 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to GNAPS in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC GNAPS on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC GNAPS at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCGNAPS; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC GNAPS must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC GNAPS shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC GNAPS through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCGNAPS’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCGNAPS’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC GNAPS orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.54.4.54.4.54.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to GNAPS be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC GNAPS must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC GNAPS will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC GNAPS shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC GNAPS must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. ‌ 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCWinn Telecom’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCWinn Telecom, solely for BTLLCWinn Telecom’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Winn Telecom to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Winn Telecom for BTLLCWinn Telecom’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Winn Telecom in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Winn Telecom on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Winn Telecom at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCWinn Telecom; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Winn Telecom must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC Winn Telecom shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Winn Telecom through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCWinn Telecom’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCWinn Telecom’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Winn Telecom orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops.Loops.‌ 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Winn Telecom be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC Winn Telecom must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Winn Telecom will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. ‌ 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCAccess Point’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCAccess Point, solely for BTLLCAccess Point’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Access Point to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Access Point for BTLLCAccess Point’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Access Point in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Access Point on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Access Point at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCAccess Point; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Access Point must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC Access Point shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Access Point through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCAccess Point’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events.be 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Access Point orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops.Loops.‌ 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, business days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Access Point be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC Access Point must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Access Point will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Access Point shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Access Point must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Access Point for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCAccess Point’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Access Point may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC Access Point is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC Access Point is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. ‌ 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCBullsEye’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade Voice Grade service to that Customer by making available to BTLLCBullsEye, solely for BTLLCBullsEye’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC BullsEye to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1 of this Attachment, Verizon shall provide Line Sharing to BTLLC BullsEye for BTLLCBullsEye’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations. Verizon shall provide Line Sharing to BullsEye in accordance with, on but only to the terms and conditions set forth hereinextent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade Voice Grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC BullsEye on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC BullsEye at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed or Conditioned Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCBullsEye; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCTech Com’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCTech Com, solely for BTLLCTech Com’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Tech Com to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Tech Com for BTLLCTech Com’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Tech Com on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Tech Com at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed or Conditioned Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCTech Com; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Tech Com must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL Compatible Loops, Digital Designed Loops and Conditioned Loops, as referenced in Section 4.4.5 below below, to make this determination. 4.4.2 BTLLC Tech Com shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Tech Com through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCTech Com’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. In such case, Verizon shall initiate provisioning and installation in accordance with the terms pertaining to xDSL Compatible Loops, Digital Designed Loops and Conditioned Loops pursuant to Section 3.15.5 of this Attachment. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCTech Com’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Tech Com orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed or Conditioned Loops; or if this Agreement does not contain provisions pertaining to Digital Designed or Conditioned Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design or Conditioned Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed and Conditioned Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Tech Com be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC Tech Com must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Tech Com will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Tech Com shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Tech Com must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Tech Com for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCTech Com’s deployment of additional Advanced Services shall be subject to the applicable FCC RulesRegulations. 4.7 BTLLC Tech Com may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC Tech Com is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC Tech Com is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Tech Com and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Tech Com must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Tech Com submits an order for Line Sharing. Splitter Option 1: Splitter in Tech Com Collocation Area In this configuration, the BTLLCTech Com-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Tech Com in its own Collocation space within the Customer’s serving End Office. The Verizon -provided - provided dial tone is routed through the splitter in the BTLLC Tech Com Collocation area. Any rearrangements will be the responsibility of BTLLCTech Com. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCTech Com-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Tech Com Collocation and the splitter. At BTLLCTech Com’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCTech Com. In those serving End Offices where Verizon does not employ POT Bay for interconnection of Tech Com’s Collocation arrangement with Verizon’s network, the use of a POT Bay, BTLLC Tech Com provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to Tech Com Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the Tech Com Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or Verizon, or, at Tech Com’s election, by a Verizon -approved vendorVerizon-approved vendor designated by Tech Com. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Tech Com upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Tech Com must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECTech Com’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Tech Com must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days business days shall apply. 4.8 BTLLC Tech Com will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCTech Com. 4.8.1.1 Under Splitter Option 1, BTLLC Tech Com may conduct its own physical tests of the shared Loop from BTLLCTech Com’s collocation area. If it chooses to do so, BTLLC Tech Com may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-Tech Com- provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCTech Com-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC Tech Com may install a BTLLC- Tech Com-provided test head to enable BTLLC Tech Com to conduct remote physical tests of the shared Loop. This optional BTLLC- Tech Com-provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided - provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCTech Com-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCTech Com-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCTech Com-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC Tech Com during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC Tech Com via RETAS after the service order has been completed. BTLLC Tech Com will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tI

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCD&E’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCD&E, solely for BTLLCD&E’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC D&E to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC D&E for BTLLCD&E’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC D&E on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC D&E at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCD&E; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC D&E must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below below, to make this determination. 4.4.2 BTLLC D&E shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC D&E through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCD&E’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCD&E’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC D&E orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; Loops provided, however, that Verizon shall not be obligated to provide Loop conditioning if if, Verizon establishes that that, in accordance with approved Power Spectral Density (PSD) masks, calculation-based standards adopted by the Industry Standards bodies and Verizon or field testing, such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC D&E be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC D&E must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination Bay (POT) Bay), Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC D&E will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCNOW Communications, Inc.’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade Voice Grade service to that Customer by making available to BTLLCNOW Communications, Inc., solely for BTLLCNOW Communications, Inc.’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC NOW Communications, Inc. to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC NOW Communications, Inc. for BTLLCNOW Communications, Inc.’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to NOW Communications, Inc. in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade Voice Grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC NOW Communications, Inc. on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC NOW Communications, Inc. at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rulesRegulations); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCNOW Communications, Inc.; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tNOW

Line Sharing. ‌ 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCRVP’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCRVP, solely for BTLLCRVP’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC RVP to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC RVP for BTLLCRVP’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to RVP in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC RVP on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC RVP at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCRVP; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC RVP must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC RVP shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC RVP through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCRVP’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCRVP’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC RVP orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops.Loops.‌ 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to RVP be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC RVP must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC RVP will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCZ-Tel’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCZ-Tel, solely for BTLLCZ-Tel’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Z-Tel to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by by, Applicable Law, Law Verizon shall provide Line Sharing to BTLLC Z-Tel for BTLLCZ-Tel’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC the CLEC on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Z-Tel at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCZ-Tel; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Z-Tel must utilize the mechanized or and manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below 4.4.5, below, to make this determination. 4.4.2 BTLLC Z-Tel shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Z-Tel through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCZ-Tel’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCZ-Tel’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Z-Tel orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The provisioning intervals interval for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days business days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Z-Tel be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Daysbusiness days. 4.4.7 BTLLC Z-Tel must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) SBN and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) POT Bay, Collocation node, or for splitter placement, placement must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an a new offering that requires both by Verizon. The Parties to will make reasonable efforts to coordinate their respective roles in the early phases of the roll out of Line Sharing in order to minimize provisioning provi sioning problems and facility issues. BTLLC Z-Tel will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Z-Tel shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Z-Tel must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Z-Tel for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCZ-Tel’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Z-Tel may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC Z-Tel is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC Z-Tel is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) DSLAM equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) CPE for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Z-Tel and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Z-Tel must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Z-Tel submits an order for Line Sharing. Splitter Option 1: Splitter in Z-Tel Collocation Area In this configuration, the BTLLCZ-Tel-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Z-Tel in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon-provided dial tone is routed through the splitter in the BTLLC Z-Tel Collocation area. Any rearrangements will be the responsibility of BTLLCZ-Tel. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCZ-Tel-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelfAt Z-at-a-time. In those serving End Offices where Verizon has employed the use Tel’s option, installation of a POT Bay, the splitter will may be performed by Verizon or by a Verizon-approved vendor designated by Z-Tel. The splitter is installed (mounted) in a relay rack between the POT (Point of Termination) Bay and the MDF. The , and the demarcation point is at the splitter end of the cable connecting BTLLC the CLEC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Z-Tel upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Z-Tel must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line SharingBay), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Z-Tel must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days business days shall apply. 4.8 BTLLC Z-Tel will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC Z-Tel may conduct its own physical tests of the shared Loop from BTLLCZ-Tel’s collocation area. If it chooses to do so, BTLLC Z-Tel may supply and install a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLCZ-Tel-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCZ-Tel-provided test head would be installed between the “line” port of the splitter and the POT Bay bay in order to conduct remote physical tests of the shared Looploop. 4.8.1.2 4.8.2 Under Splitter Option 2, either Verizon or a Verizon - Verizon-approved vendor selected by BTLLC Z-Tel may install a BTLLC- Z-Tel-provided test head to enable BTLLC Z-Tel to conduct remote physical tests of the shared Loop. This optional BTLLC- Z-Tel- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided Verizon-provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCZ-Tel-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCZ-Tel-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCZ-Tel-provided test head, and will direct all required activity. 4.8.1.3 4.8.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided Verizon-provided test head, and, upon request, will provide these test results to BTLLC Z-Tel during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 4.8.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC Z-Tel via RETAS after the service order has been completed. BTLLC Z-Tel will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 4.8.5 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC Z-Tel has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC Z-Tel will each dispatch a ttechnician to an agreed-upon point to conduct a joint meet test to identify and resolve the error or trouble. Verizon may assess a charge for a misdirected dispatch only if the error or trouble is determined to be one that Z-Tel should reasonably have been able to isolate and diagnose through one of the testing options available to Z-Tel above. The Parties will mutually agree upon the specific procedures for conducting joint meet tests. 4.8.6 Verizon and Z-Tel each have a joint responsibility to educate its Customer regarding which service provider should be called for problems with their respective voice or Advanced Service offerings. Verizon will retain primary responsibility for voice band trouble tickets, including repairing analog voice grade services and the physical line between the NID at the Customer premise and the point of demarcation in the central office. Z-Tel will be responsible for repairing advanced data services it offers over the Line Sharing arrangement. Each Party will be responsible for maintaining its own equipment. Before either Party initiates any activity on a new shared Loop that may cause a disruption of the voice or data service of the other Party, that Party shall first make a good faith effort to notify the other Party of the possibility of a service disruption. Verizon and Z-Tel will work together to address Customer initiated repair requests and to prevent adverse impacts to the Customer. 4.8.7 When Verizon provides inside wire maintenance services to the Customer, Verizon will only be responsible for testing and repairing the inside wire for voice-grade services. Verizon will not test, dispatch a technician, repair, or upgrade inside wire to clear trouble calls associated with Z-Tel’s Advanced Services. Verizon will not repair any CPE equipment provided by Z-Tel. Before a trouble ticket is issued to Verizon, Z-Tel shall validate whether the Customer is experiencing a trouble that arises from Z-Tel’s Advanced Service. If the problem reported is isolated to the a

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCReconex’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCReconex, solely for BTLLCReconex’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Reconex to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Reconex for BTLLCReconex’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Reconex on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Reconex at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCReconex; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Reconex must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC Reconex shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Reconex through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCReconex’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCReconex’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Reconex orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Reconex be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC Reconex must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Reconex will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Reconex shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Reconex must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Reconex for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCReconex’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Reconex may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC Reconex is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC Reconex is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Reconex and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Reconex must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Reconex submits an order for Line Sharing. In this configuration, the BTLLCReconex-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Reconex in its own Collocation space within the Customer’s serving End Office. The Verizon -provided - provided dial tone is routed through the splitter in the BTLLC Reconex Collocation area. Any rearrangements will be the responsibility of BTLLCReconex. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCReconex-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Reconex Collocation and the splitter. At BTLLCReconex’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCReconex. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC Reconex provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC Reconex does not have access. BTLLC Reconex shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLCReconex's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Reconex upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Reconex must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Reconex must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC Reconex will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCReconex. 4.8.1.1 Under Splitter Option 1, BTLLC Reconex may conduct its own physical tests of the shared Loop from BTLLCReconex’s collocation area. If it chooses to do so, BTLLC Reconex may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-Reconex- provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCReconex-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC Reconex may install a BTLLC- Reconex-provided test head to enable BTLLC Reconex to conduct remote physical tests of the shared Loop. This optional BTLLC- Reconex-provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided - provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCReconex-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCReconex-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCReconex-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC Reconex during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC Reconex via RETAS after the service order has been completed. BTLLC Reconex will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC Reconex will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC Reconex through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC Reconex has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a ttes

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCBest’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCBest, solely for BTLLCBest’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Best to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Best for BTLLCBest’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Best on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Best at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCBest; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Best must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination.in 4.4.2 BTLLC Best shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Best through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCBest’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCBest’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Best orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Best be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC Best must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination Bay (POT) Bay), Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Best will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Best shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Best must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Best for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCBest’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Best may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC Best is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC Best is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Best and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Best must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Best submits an order for Line Sharing. Splitter Option 1: Splitter in Best Collocation Area In this configuration, the BTLLCBest-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Best in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Best Collocation area. Any rearrangements will be the responsibility of BTLLCBest. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCBest-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Best Collocation and the splitter. At BTLLCBest’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCBest. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC Best provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC Best does not have access. BTLLC Best shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLCBest's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Best upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Best must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Best must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days business days shall apply. 4.8 BTLLC Best will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCBest. 4.8.1.1 Under Splitter Option 1, BTLLC Best may conduct its own physical tests of the shared Loop from BTLLCBest’s collocation area. If it chooses to do so, BTLLC Best may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLCBest-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCBest-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved -approved vendor selected by BTLLC Best may install a BTLLC- Best-provided test head to enable BTLLC Best to conduct remote physical tests of the shared Loop. This optional BTLLC- Best-provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCBest-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCBest-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCBest-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC Best during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC Best via RETAS after the service order has been completed. BTLLC Best will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC Best will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC Best through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC Best has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC Best will each dispatch a technician to an agreed-upon point to conduct a joint meet test t

Line Sharing. ‌ 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCAdvent’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade Voice Grade service to that Customer by making available to BTLLCAdvent, solely for BTLLCAdvent’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Advent to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1 of this Attachment, Verizon shall provide Line Sharing to BTLLC Advent for BTLLCAdvent’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations. Verizon shall provide Line Sharing to Advent in accordance with, on but only to the terms and conditions set forth hereinextent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade Voice Grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Advent on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Advent at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed or Conditioned Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCAdvent; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Advent must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL Compatible Loops, Digital Designed Loops, as referenced in Section 4.4.5 below Loops and Conditioned Loops to make this determination. 4.4.2 BTLLC Advent shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order Service Order or other mutually agreed upon type of service orderService Order. Such service order Service Order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Advent through the Verizon Loop prequalification databasetools, and if a positive response is received and followed by receipt of BTLLCAdvent’s valid, accurate and pre-qualified service order Service Order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. In such case, Verizon shall initiate provisioning and installation in accordance with the terms pertaining to xDSL Compatible Loops, Digital Designed Loops and Conditioned Loops pursuant to Section 3.2.5 of this Attachment. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCAdvent’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Advent orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; Conditioned Loops;‌ provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voiceVoice-grade Grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed and Conditioned Loops, as referenced in Section 4.4.5 aboveof this Attachment. Except The standard provisioning interval for the Line Sharing arrangement shall be as otherwise set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days; (b) the standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval for the Line Sharing arrangement that is required by Applicable Law, if any. The standard provisioning intervals interval for the Line Sharing arrangement initially shall be the commence only once any requested engineering and conditioning tasks have been completed. The standard provisioning interval of six (6) Business Days applicable shall not apply where a Line and Station Transfer is performed pursuant to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not requiredSection 3.2.5.2. In no event shall the Line Sharing interval applied offered to BTLLC Advent be longer than the interval applied offered to any similarly situated Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC Advent must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation Collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Advent will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Advent shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Advent must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade Voice Grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Advent for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCAdvent’s deployment of additional Advanced Services shall be subject to the applicable FCC RulesRegulations. 4.7 BTLLC Advent may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade Voice Grade service is provided to Verizon Verizon’s Customer. BTLLC Advent is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC Advent is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Advent and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Advent must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Advent submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in Advent Collocation Area In this configuration, the BTLLCAdvent-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Advent in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon-provided dial tone is routed through the splitter in the BTLLC Advent Collocation area. Any rearrangements will be the responsibility of BTLLCAdvent. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCAdvent-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of Advent’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at Advent’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCAdvent. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of Advent’s Collocation arrangement with Verizon’s network, BTLLC the Advent provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to Advent Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the Advent Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or Verizon, or, at Advent’s election, by a Verizon -approved vendorVerizon-approved vendor designated by Advent. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Advent upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Advent must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECAdvent’s collocation Collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Advent must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC Advent will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of Advent Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCAdvent. 4.8.1.1 Under Splitter Option 1A, BTLLC Advent may conduct its own physical tests of the shared Loop from BTLLCAdvent’s collocation Collocation area. If it chooses to do so, BTLLC Advent may supply and install a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLCAdvent-provided test equipment may not interrupt an in-in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCAdvent-provided test head would will be installed in Advent’s Collocation area between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2C, upon request by Advent, either Verizon or or, at Advent’s election, a Verizon - Verizon-approved vendor selected by BTLLC may Advent will install a BTLLC- Advent-provided test head to enable BTLLC Advent to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tthe

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCGNAPS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCGNAPS, solely for BTLLCGNAPS’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC GNAPS to provide such services. This Section 4 0 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC GNAPS for BTLLCGNAPS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 0 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to GNAPS in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC GNAPS on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC GNAPS at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCGNAPS; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC GNAPS must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC GNAPS shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC GNAPS through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCGNAPS’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCGNAPS’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC GNAPS orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to GNAPS be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC GNAPS must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC GNAPS will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC GNAPS shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC GNAPS must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC GNAPS for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCGNAPS’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC GNAPS may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC GNAPS is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC GNAPS is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or and/ or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC GNAPS and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC GNAPS must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC GNAPS submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in GNAPS Collocation Area In this configuration, the BTLLCGNAPS-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC GNAPS in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon-provided dial tone is routed through the splitter in the BTLLC GNAPS Collocation area. Any rearrangements will be the responsibility of BTLLCGNAPS. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCGNAPS-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of GNAPS’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at GNAPS’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCGNAPS. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of GNAPS’s Collocation arrangement with Verizon’s network, BTLLC the GNAPS provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to GNAPS Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the GNAPS Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or Verizon, or, at GNAPS’s election, by a Verizon -approved vendorVerizon-approved vendor designated by GNAPS. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC GNAPS upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC GNAPS must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECGNAPS’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC GNAPS must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC GNAPS will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of GNAPS Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCGNAPS. 4.8.1.1 Under Splitter Option 1A, BTLLC GNAPS may conduct its own physical tests of the shared Loop from BTLLCGNAPS’s collocation area. If it chooses to do so, BTLLC GNAPS may supply and install a test head to facilitate such physical tests, provided that: : (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLCGNAPS-provided test equipment may not interrupt an in-in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCGNAPS-provided test head would will be installed in GNAPS’s Collocaton area between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2C, upon request by GNAPS, either Verizon or or, at GNAPS’s election, a Verizon - Verizon-approved vendor selected by BTLLC may GNAPS will install a BTLLC- GNAPS-provided test head to enable BTLLC GNAPS to conduct remote physical tests of the shared Loop. This optional BTLLC- GNAPS-provided test head may will be installed at a point between the “line” port of the splitter and the Verizon -provided Verizon-provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCGNAPS-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCGNAPS-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCGNAPS-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided Verizon-provided test head, and, upon request, will provide these test results to BTLLC GNAPS during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, upon request by GNAPS, Verizon will make MLT access available to BTLLC GNAPS via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tha

Line Sharing. 4.1 1.2.10.1 ‘Line Sharing’ is an arrangement by which Verizon VERIZON facilitates BTLLCSPRINT’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon VERIZON to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCSPRINT, solely for BTLLCSPRINT’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC SPRINT to provide such services. This Section 4 Agreement addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In . The Parties do not intend anything in this Agreement to prejudice either SPRINT’s position that VERIZON is obligated to provide line sharing on loops constructed of fiber optic cable, digital loop carrier electronics, and copper distribution cable, or VERIZON’s position that VERIZON is obligated to provide line sharing only over copper loops or copper sub-loops. SPRINT does not waive any right it may have under Applicable Law to request VERIZON to provide to SPRINT, pursuant to an appropriate written amendment to this Agreement to be negotiated by the Parties in accordance withwith the Act, but line sharing over loops constructed of fiber optic cable, digital loop carrier electronics, and copper distribution cable; provided, that VERIZON shall be obligated to provide line sharing over such loops, only to the extent required by Applicable Law. VERIZON does not waive any right it may have under Applicable Law to decline to provide line sharing over loops that are not copper loops or over sub-loops that are not copper sub-loops. Subject to the conditions set forth in Section 1.7 below, Verizon to the extent required by Applicable Law, VERIZON shall provide Line Sharing to BTLLC SPRINT for BTLLCSPRINT’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the rates, terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon VERIZON must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon VERIZON Customer’s dial tone must originate from a Verizon VERIZON End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC SPRINT on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon 1.2.10.2 VERIZON shall make Line Sharing available to BTLLC SPRINT at the rates set forth in the Pricing AttachmentPart IV of this Agreement. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment Part IV for Line Sharing itself, the following rates shown in the Pricing Attachment Part IV and in Verizon VERIZON’s applicable Tariffs (including, but not limited to, to the extent applicable, VERIZON Tariff Pa. P.U.C. No. 9) are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLC; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t;

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCPremiere’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCPremiere, solely for BTLLCPremiere’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Premiere to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Premiere for BTLLCPremiere’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Premiere on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Premiere at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCPremiere; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCNorcom’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCNorcom, solely for BTLLCNorcom’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Norcom to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Norcom for BTLLCNorcom’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Norcom on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Norcom at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLC▇▇▇▇▇▇; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Norcom must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC Norcom shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Norcom through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCNorcom’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCNorcom’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Norcom orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Norcom be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC Norcom must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Norcom will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Norcom shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Norcom must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCPremiere’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCPremiere, solely for BTLLCPremiere’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Premiere to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Premiere for BTLLCPremiere’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Premiere on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Premiere at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCPremiere; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Premiere must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC Premiere shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Premiere through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCPremiere’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCPremiere’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Premiere orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; , then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops, provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Premiere be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC Premiere must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Premiere will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Premiere shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Premiere must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Premiere for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCPremiere’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Premiere may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC Premiere is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC Premiere is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Premiere and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Premiere must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Premiere submits an order for Line Sharing. Splitter Option 1: Splitter in Premiere Collocation Area In this configuration, the BTLLCPremiere-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Premiere in its own Collocation space within the Customer’s serving End Office. The Verizon -provided - provided dial tone is routed through the splitter in the BTLLC Premiere Collocation area. Any rearrangements will be the responsibility of BTLLCPremiere. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCPremiere-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Premiere Collocation and the splitter. At BTLLCPremiere’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCPremiere. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC Premiere provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC Premiere does not have access. BTLLC Premiere shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLCPremiere's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Premiere upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Premiere must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise.). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Premiere must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC Premiere will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCPremiere. 4.8.1.1 Under Splitter Option 1, BTLLC Premiere may conduct its own physical tests of the shared Loop from BTLLCPremiere’s collocation area. If it chooses to do so, BTLLC Premiere may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-Premiere- provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCPremiere-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC Premiere may install a BTLLC- Premiere-provided test head to enable BTLLC Premiere to conduct remote physical tests of the shared Loop. This optional BTLLC- Premiere-provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided - provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCPremiere-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCPremiere-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCPremiere-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC Premiere during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC Premiere via RETAS after the service order has been completed. BTLLC Premiere will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC Premiere will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC Premiere through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCGNAPS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCGNAPS, solely for BTLLCGNAPS’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC GNAPS to provide such services. This Section 4 0 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC GNAPS for BTLLCGNAPS’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 0 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to GNAPS in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC GNAPS on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC GNAPS at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCGNAPS; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC GNAPS must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC GNAPS shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC GNAPS through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCGNAPS’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCNL’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade Voice Grade service to that Customer by making available to BTLLCNL, solely for BTLLCNL’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC NL to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1 of this Attachment, Verizon shall provide Line Sharing to BTLLC NL for BTLLCNL’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations. Verizon shall provide Line Sharing to NL in accordance with, on but only to the terms and conditions set forth hereinextent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade Voice Grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC NL on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC NL at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring non-recurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed or Conditioned Loop) charges; (iii) charges associated with Collocation collocation activities requested by BTLLCNL; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCOneStar’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCOneStar, solely for BTLLCOneStar’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC OneStar to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC OneStar for BTLLCOneStar’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to OneStar in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC OneStar on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC OneStar at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCOneStar; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC OneStar must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC OneStar shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC OneStar through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCOneStar’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCOneStar’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC OneStar orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, business days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to OneStar be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC OneStar must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation Colloc ation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC OneStar will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC OneStar shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC OneStar must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC OneStar for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCOneStar’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC OneStar may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC OneStar is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC OneStar is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC OneStar and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC OneStar must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC OneStar submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in OneStar Collocation Area In this configuration, the BTLLCOneStar-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC OneStar in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon- provided dial tone is routed through the splitter in the BTLLC OneStar Collocation area. Any rearrangements will be the responsibility of BTLLCOneStar. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCOneStar-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of OneStar’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at OneStar’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCOneStar. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of OneStar’s Collocation arrangement with Verizon’s network, BTLLC the OneStar provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to OneStar Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the OneStar Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or ▇▇▇▇▇▇▇, or, at OneStar’s election, by a Verizon -approved vendorVerizon-approved vendor designated by OneStar. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC OneStar upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC OneStar must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECOneStar’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC OneStar must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days business days shall apply. 4.8 BTLLC OneStar will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of OneStar Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCOneStar. 4.8.1.1 Under Splitter Option 1A, BTLLC OneStar may conduct its own physical tests of the shared Loop from BTLLCOneStar’s collocation area. If it chooses to do so, BTLLC OneStar may supply and install a test head to facilitate such physical tests, provided that: : (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLCOneStar-provided test equipment may not interrupt an in-in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCOneStar-provided test head would will be installed in OneStar’s Collocaton area between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2C, upon request by OneStar, either Verizon or or, at OneStar’s election, a Verizon - Verizon-approved vendor selected by BTLLC may OneStar will install a BTLLC- OneStar-provided test head to enable BTLLC OneStar to conduct remote physical tests of the shared Loop. This optional BTLLC- OneStar-provided test head may will be installed at a point between the “line” port of the splitter and the Verizon -provided Verizon-provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCOneStar-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCOneStar-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCOneStar-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided Verizon-provided test head, and, upon request, will provide these test results to BTLLC OneStar during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tUn

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCVerizon Avenue’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade Voice Grade service to that Customer by making available to BTLLCVerizon Avenue, solely for BTLLCVerizon Avenue’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Verizon Avenue to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Verizon Avenue for BTLLCVerizon Avenue’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Verizon Avenue in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade Voice Grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Verizon Avenue on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Verizon Avenue at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rulesRegulations); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCVerizon Avenue; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Verizon Avenue must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC Verizon Avenue shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Verizon Avenue through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCVerizon Avenue’s valid, accurate and pre-pre- qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCVerizon Avenue’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Verizon Avenue orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Verizon Avenue be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC Verizon Avenue must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Verizon Avenue will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Verizon Avenue shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Verizon Avenue must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade Voice Grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Verizon Avenue for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCVerizon Avenue’s deployment of additional Advanced Services shall be subject to the applicable FCC RulesRegulations. 4.7 BTLLC Verizon Avenue may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade Voice Grade service is provided to Verizon Verizon’s Customer. BTLLC Verizon Avenue is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC Verizon Avenue is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Verizon Avenue and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Verizon Avenue must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Verizon Avenue submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in Verizon Avenue Collocation Area In this configuration, the BTLLCVerizon Avenue-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Verizon Avenue in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon- provided dial tone is routed through the splitter in the BTLLC Verizon Avenue Collocation area. Any rearrangements will be the responsibility of BTLLCVerizon Avenue. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-Verizon Avenue- provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of Verizon Avenue’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at Verizon Avenue’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCVerizon Avenue. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of Verizon Avenue’s Collocation arrangement with Verizon’s network, BTLLC the Verizon Avenue provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to Verizon Avenue Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the Verizon Avenue Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon, or, at Verizon or Avenue’s election, by a Verizon- approved vendor designated by Verizon -approved vendorAvenue. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Verizon Avenue upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Verizon Avenue must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECVerizon Avenue’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Verizon Avenue must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC Verizon Avenue will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of Verizon Avenue Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCVerizon Avenue. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCNationNet’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCNationNet, solely for BTLLCNationNet’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC NationNet to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC NationNet for BTLLCNationNet’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to NationNet in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC NationNet on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC NationNet at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCNationNet; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC NationNet must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC NationNet shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC NationNet through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCNationNet’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCNationNet’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC NationNet orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain cont ain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, business days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to NationNet be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC NationNet must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC NationNet will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC NationNet shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC NationNet must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC NationNet for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCNationNet’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC NationNet may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC NationNet is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC NationNet is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC NationNet and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC NationNet must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC NationNet submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in NationNet Collocation Area In this configuration, the BTLLCNationNet-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC NationNet in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon- provided dial tone is routed through the splitter in the BTLLC NationNet Collocation area. Any rearrangements will be the responsibility of BTLLCNationNet. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCNationNet-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of NationNet’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at NationNet’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCNationNet. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of NationNet’s Collocation arrangement with Verizon’s network, BTLLC the NationNet provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to NationNet Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the NationNet Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or Verizon, or, at NationNet’s election, by a Verizon -approved vendorVerizon-approved vendor designated by NationNet. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC NationNet upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC NationNet must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECNationNet’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC NationNet must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days business days shall apply. 4.8 BTLLC NationNet will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of NationNet Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCNationNet. 4.8.1.1 Under Splitter Option 1A, BTLLC NationNet may conduct its own physical tests of the shared Loop from BTLLCNationNet’s collocation area. If it chooses to do so, BTLLC NationNet may supply and install a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLCNationNet-provided test equipment may not interrupt an in-in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCNationNet-provided test head would will be installed in NationNet’s Collocaton area between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2C, upon request by NationNet, either Verizon or or, at NationNet’s election, a Verizon - Verizon-approved vendor selected by BTLLC may NationNet will install a BTLLC- NationNet - provided test head to enable BTLLC NationNet to conduct remote physical tests of the shared Loop. This optional BTLLC- NationNet- provided test head may will be installed at a point between the “line” port of the splitter and the Verizon -provided Verizon-provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCNationNet-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCNationNet-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided NationNet -provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided Verizon-provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a twil

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCVarTec’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCVarTec, solely for BTLLCVarTec’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC VarTec to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC VarTec for BTLLCVarTec’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to VarTec in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC VarTec on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC VarTec at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCVarTec; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC VarTec must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC VarTec shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC VarTec through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCVarTec’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCVarTec’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC VarTec orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, business days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to VarTec be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC VarTec must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC VarTec will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC VarTec shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC VarTec must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC VarTec for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCVarTec’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC VarTec may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC VarTec is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC VarTec is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC VarTec and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC VarTec must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC VarTec submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in VarTec Collocation Area In this configuration, the BTLLCVarTec-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC VarTec in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon-provided dial tone is routed through the splitter in the BTLLC VarTec Collocation area. Any rearrangements will be the responsibility of BTLLCVarTec. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided VarTec -provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of VarTec’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at VarTec’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCVarTec. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of VarTec’s Collocation arrangement with Verizon’s network, BTLLC the VarTec provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to VarTec Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the VarTec Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or ▇▇▇▇▇▇▇, or, at VarTec’s election, by a Verizon -approved vendorVerizon-approved vendor designated by VarTec. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC VarTec upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC VarTec must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECVarTec’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC VarTec must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days business days shall apply. 4.8 BTLLC VarTec will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of VarTec Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCVarTec. 4.8.1.1 Under Splitter Option 1A, BTLLC VarTec may conduct its own physical tests of the shared Loop from BTLLCVarTec’s collocation area. If it chooses to do so, BTLLC VarTec may supply and install a test head to facilitate such physical tests, provided that: : (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLCVarTec-provided test equipment may not interrupt an in-in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCVarTec-provided test head would will be installed in VarTec’s Collocaton area between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2C, upon request by ▇▇▇▇▇▇, either Verizon or or, at VarTec’s election, a Verizon - Verizon-approved vendor selected by BTLLC may VarTec will install a BTLLC- VarTec-provided test head to enable BTLLC VarTec to conduct remote physical tests of the shared Loop. This optional BTLLC- VarTec-provided test head may will be installed at a point between the “line” port of the splitter and the Verizon -provided Verizon-provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCVarTec-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCVarTec-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCVarTec-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided Verizon-provided test head, and, upon request, will provide these test results to BTLLC VarTec during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, upon request by VarTec, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tmak

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCAURA’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCAURA, solely for BTLLCAURA’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC AURA to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC AURA for BTLLCAURA’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: : (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC AURA on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC AURA at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLC; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t;

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCFRCI’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL RA DSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCFRCI, solely for BTLLCFRCI’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC FRCI to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC FRCI for BTLLCFRCI’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC FRCI on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC FRCI at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCFRCI; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC FRCI must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC FRCI shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC FRCI through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCFRCI’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loopsloops except as otherwise required by Applicable Law. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCFRCI’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC FRCI orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervalsint ervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC FRCI be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC FRCI must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC FRCI will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC FRCI shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC FRCI must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC FRCI for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCFRCI’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC FRCI may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC FRCI is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC FRCI is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC FRCI and must satisfy the same safety NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC FRCI must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC FRCI submits an order for Line Sharing. In this configuration, the BTLLCFRCI-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC FRCI in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC FRCI Collocation area. Any rearrangements will be the responsibility of BTLLCFRCI. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCFRCI-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC FRCI Collocation and the splitter. At BTLLCFRCI’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCFRCI. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC FRCI provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC FRCI does not have access. BTLLC FRCI shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLCFRCI's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC FRCI upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC FRCI must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC FRCI must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC FRCI will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCFRCI. 4.8.1.1 Under Splitter Option 1, BTLLC FRCI may conduct its own physical tests of the shared Loop from BTLLCFRCI’s collocation area. If it chooses to do so, BTLLC FRCI may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same safety NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLCFRCI-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCFRCI-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC FRCI may install a BTLLC- FRCI - provided test head to enable BTLLC FRCI to conduct remote physical tests of the shared Loop. This optional BTLLC- FRCI - provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCFRCI-provided test head must satisfy the same safety NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCFRCI-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCFRCI-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC FRCI during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC FRCI via RETAS after the service order has been completed. BTLLC FRCI will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC FRCI will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC FRCI through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC FRCI has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC FRCI will each dispatch a tdisp

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLC***CLEC Acronym TXT***’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLC***CLEC Acronym TXT***, solely for BTLLC***CLEC Acronym TXT***’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC ***CLEC Acronym TXT*** to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC ***CLEC Acronym TXT*** for BTLLC***CLEC Acronym TXT***’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to ***CLEC Acronym TXT*** in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-circuit- switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC ***CLEC Acronym TXT*** on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC ***CLEC Acronym TXT*** at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLC***CLEC Acronym TXT***; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCTalk Unlimited’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCTalk Unlimited, solely for BTLLCTalk Unlimited’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Talk Unlimited to provide provi de such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Talk Unlimited for BTLLCTalk Unlimited’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Talk Unlimited in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Talk Unlimited on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Talk Unlimited at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCTalk Unlimited; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Talk Unlimited must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC Talk Unlimited shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Talk Unlimited through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCTalk Unlimited’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCTalk Unlimited’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Talk Unlimited orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Talk Unlimited be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC Talk Unlimited must provide all required Collocation, CFA, Special ▇▇▇▇ Bill Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Talk Unlimited will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Talk Unlimited shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Talk Unlimited must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Talk Unlimited for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCTalk Unlimited’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Talk Unlimited may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC Talk Unlimited is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC Talk Unlimited is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Talk Unlimited and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Talk Unlimited must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Talk Unlimited submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in Talk Unlimited Collocation Area In this configuration, the BTLLCTalk Unlimited-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Talk Unlimited in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon- provided dial tone is routed through the splitter in the BTLLC Talk Unlimited Collocation area. Any rearrangements will be the responsibility of BTLLCTalk Unlimited. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCTalk Unlimited-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of Talk Unlimited’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at Talk Unlimited’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCTalk Unlimited. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of Talk Unlimited’s Collocation arrangement with Verizon’s network, BTLLC the Talk Unlimited provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to Talk Unlimited Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the Talk Unlimited Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or ▇▇▇▇▇▇▇, or, at Talk Unlimited’s election, by a Verizon -approved vendorVerizon-approved vendor designated by Talk Unlimited. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Talk Unlimited upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Talk Unlimited must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECTalk Unlimited’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Talk Unlimited must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC Talk Unlimited will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of Talk Unlimited Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCTalk Unlimited. 4.8.1.1 Under Splitter Option 1A, BTLLC Talk Unlimited may conduct its own physical tests of the shared Loop from BTLLCTalk Unlimited’s collocation area. If it chooses to do so, BTLLC Talk Unlimited may supply and install a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLCTalk Unlimited-provided test equipment may not interrupt an in-in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCTalk Unlimited-provided test head would will be installed in Talk Unlimited’s Collocaton area between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2C, upon request by Talk Unlimited, either Verizon or or, at Talk Unlimited’s election, a Verizon - Verizon- approved vendor selected by BTLLC may Talk Unlimited will install a BTLLC- Talk Unlimited-provided test head to enable BTLLC Talk Unlimited to conduct remote physical tests of the shared Loop. This optional BTLLC- Talk Unlimited-provided test head may will be installed at a point between the “line” port of the splitter and the Verizon -provided Verizon-provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCTalk Unlimited-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-Talk Unlimited- provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. ‌ 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCICG’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCICG, solely for BTLLCICG’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC ICG to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC ICG for BTLLCICG’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: : (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC ICG on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC ICG at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLC; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t;

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCIG2’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCIG2, solely for BTLLCIG2’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC IG2 to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC IG2 for BTLLCIG2’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to IG2 in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC IG2 on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC IG2 at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCIG2; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges.) 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC IG2 must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC IG2 shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC IG2 through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCIG2’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voicetwenty-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tfour

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCReconex’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCReconex, solely for BTLLCReconex’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Reconex to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Reconex for BTLLCReconex’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Reconex on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Reconex at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCReconex; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Reconex must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC Reconex shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service servi ce order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Reconex through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCReconex’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCReconex’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Reconex orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Reconex be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC Reconex must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Reconex will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Reconex shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Reconex must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Reconex for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCReconex’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Reconex may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC Reconex is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC Reconex is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC Reconex and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC Reconex must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC Reconex submits an order for Line Sharing. Splitter Option 1: Splitter in Reconex Collocation Area In this configuration, the BTLLCReconex-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC Reconex in its own Collocation space within the Customer’s serving End Office. The Verizon -provided - provided dial tone is routed through the splitter in the BTLLC Reconex Collocation area. Any rearrangements will be the responsibility of BTLLCReconex. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCReconex-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Reconex Collocation and the splitter. At BTLLCReconex’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCReconex. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC Reconex provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC Reconex does not have access. BTLLC Reconex shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLCReconex's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC Reconex upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Reconex must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Reconex must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC Reconex will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCReconex. 4.8.1.1 Under Splitter Option 1, BTLLC Reconex may conduct its own physical tests of the shared Loop from BTLLCReconex’s collocation area. If it chooses to do so, BTLLC Reconex may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-Reconex- provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCReconex-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC Reconex may install a BTLLC- Reconex-provided test head to enable BTLLC Reconex to conduct remote physical tests of the shared Loop. This optional BTLLC- Reconex-provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided - provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCReconex-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCReconex-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCReconex-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC Reconex during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC Reconex via RETAS after the service order has been completed. BTLLC Reconex will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC Reconex will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC Reconex through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a tReco

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLC’s ▇▇▇▇▇▇▇▇’▇ provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade Voice Grade service to that Customer by making available to BTLLC▇▇▇▇▇▇▇▇, solely for BTLLC’s ▇▇▇▇▇▇▇▇’▇ own use, the frequency range above the voice band on the same copper Loop required by BTLLC ▇▇▇▇▇▇▇▇ to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1 of this Attachment, Verizon shall provide Line Sharing to BTLLC ▇▇▇▇▇▇▇▇ for BTLLC’s ▇▇▇▇▇▇▇▇’▇ provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rulesRegulations. Verizon shall provide Line Sharing to ▇▇▇▇▇▇▇▇ in accordance with, on but only to the terms and conditions set forth hereinextent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade Voice Grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC ▇▇▇▇▇▇▇▇ on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC ▇▇▇▇▇▇▇▇ at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rulesRegulations); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed or Conditioned Loop) charges; (iii) charges associated with Collocation activities requested by BTLLC▇▇▇▇▇▇▇▇; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC ▇▇▇▇▇▇▇▇ must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL Compatible Loops, Digital Designed Loops, as referenced in Section 4.4.5 below Loops and Conditioned Loops to make this determination. 4.4.2 BTLLC ▇▇▇▇▇▇▇▇ shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order Service Order or other mutually agreed upon type of service orderService Order. Such service order Service Order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC ▇▇▇▇▇▇▇▇ through the Verizon Loop prequalification databasetools, and if a positive response is received and followed by receipt of BTLLC’s ▇▇▇▇▇▇▇▇’▇ valid, accurate and pre-qualified service order Service Order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. In such case, Verizon shall initiate provisioning and installation in accordance with the terms pertaining to xDSL Compatible Loops, Digital Designed Loops and Conditioned Loops pursuant to Section 3.2.5 of this Attachment. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLC’s ▇▇▇▇▇▇▇▇’▇ valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC ▇▇▇▇▇▇▇▇ orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Conditioned Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voiceVoice-grade Grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed and Conditioned Loops, as referenced in Section 4.4.5 aboveof this Attachment. Except The standard provisioning interval for the Line Sharing arrangement shall be as otherwise set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days; (b) the standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval for the Line Sharing arrangement that is required by Applicable Law, if any. The standard provisioning intervals interval for the Line Sharing arrangement initially shall be the commence only once any requested engineering and conditioning tasks have been completed. The standard provisioning interval of six (6) Business Days applicable shall not apply where a Line and Station Transfer is performed pursuant to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not requiredSection 3.2.5.2. In no event shall the Line Sharing interval applied offered to BTLLC ▇▇▇▇▇▇▇▇ be longer than the interval applied offered to any similarly situated Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC ▇▇▇▇▇▇▇▇ must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation Collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC ▇▇▇▇▇▇▇▇ will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCEqual Access’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCEqual Access, solely for BTLLCEqual Access’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Equal Access to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC Equal Access for BTLLCEqual Access’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to Equal Access in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Equal Access on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Equal Access at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-shared- line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCEqual Access; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges.charges.‌‌‌‌‌‌‌ 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Equal Access must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC Equal Access shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Equal Access through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCEqual Access’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCEqual Access’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Equal Access orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals:‌‌‌‌ (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, business days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to Equal Access be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC Equal Access must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Equal Access will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC Equal Access shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC Equal Access must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC Equal Access for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- T1.419-2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-T1.413- 1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCEqual Access’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC Equal Access may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC Equal Access is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC Equal Access is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved Loop).‌ vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment.Equal Access.‌‌‌‌ 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC Equal Access must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECEqual Access’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC Equal Access must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days business days shall apply. 4.8 BTLLC Equal Access will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of Equal Access Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCEqual Access. 4.8.1.1 Under Splitter Option 1A, BTLLC Equal Access may conduct its own physical tests of the shared Loop from BTLLCEqual Access’s collocation area. If it chooses to do so, BTLLC Equal Access may supply and install a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLCEqual Access-provided test equipment may not interrupt an in-in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCEqual Access-provided test head would will be installed in Equal Access’s Collocaton area between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2C, upon request by Equal Access, either Verizon or or, at Equal Access’s election, a Verizon - Verizon- approved vendor selected by BTLLC may Equal Access will install a BTLLC- Equal Access-provided test head to enable BTLLC Equal Access to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCEqual Access-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress will be installed at voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCEqual Access-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided Verizon-provided test head, and, upon request, will provide these test results to BTLLC Equal Access during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, upon request by Equal Access, Verizon will make MLT access available to BTLLC Equal Access via RETAS after the service order has been completed. BTLLC Equal Access will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for useinterconnection of Equal Access’s Collocation arrangement with Verizon’s network, BTLLC Equal Access will not be permitted to supply its own test head; . Instead, Verizon will make its a testing system available to BTLLC Equal Access through use of the on-line computer interface test system at ▇▇▇.▇▇▇▇▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC Equal Access has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC Equal Access will each dispatch a ttechnician to an agreed-upon point to conduct a joint meet test to identify and resolve the error or trouble. Verizon may assess a charge for a misdirected dispatch only if the error or trouble is determined to be one that Equal Access should reasonably have been able to isolate and diagnose through one of the testing options available to Equal Access above. The Parties will mutually agree upon the specific procedures for conducting joint meet tests. 4.8.4 Verizon and Equal Access each have a responsibility to educate the Customer regarding which service provider should be called for problems with their respective service offerings. Verizon will retain primary responsibility for voice band trouble tickets, including repairing analog voice grade services and the physical line between the NID at the Customer premise and the point of demarcation in the Central Office. Equal Access will be responsible for repairing services it offers over the Line Sharing arrangement. Each Party will be responsible for maintaining its own equipment. If a splitter or test head that Equal Access has provided to Verizon malfunctions, Equal Access shall provide a replacement splitter or test head to Verizon. Before either 4.8.5 When Verizon provides Inside Wire maintenance services to the Customer, Verizon will only be responsible for testing and repairing the Inside Wire for voice-grade services. Verizon will not test, dispatch a technician, repair, or upgrade Inside Wire to clear trouble calls associated with Equal Access’s Advanced Services. Verizon will not repair any CPE provided by Equal Access. Before a trouble ticket is issued to Verizon, Equal Access shall validate whether the Customer is experiencing a trouble that arises from Equal Access’s service. If the problem reported is isolated to the an

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCTeleconex’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCTeleconex, solely for BTLLCTeleconex’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC Teleconex to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC Teleconex for BTLLCTeleconex’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC Teleconex on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC Teleconex at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCTeleconex; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC Teleconex must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination.determination.‌‌‌‌‌‌ 4.4.2 BTLLC Teleconex shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC Teleconex through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCTeleconex’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCTeleconex’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC Teleconex orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC Teleconex be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC Teleconex must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement.Sharing 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC Teleconex will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCNUI’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCNUI, solely for BTLLCNUI’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC NUI to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC NUI for BTLLCNUI’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to NUI in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC NUI on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC NUI at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCNUI; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC NUI must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC NUI shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC NUI through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCNUI’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- twenty-four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCNUI’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC NUI orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, Days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to NUI be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC NUI must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC NUI will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC NUI shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC NUI must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC NUI for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCNUI’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC NUI may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon Verizon’s Customer. BTLLC NUI is responsible for providing providing, through one of the splitter options described below, a splitter at that Wire Center that complies with ANSI specification T1.413 which T1.413, employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed operates so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described belowmaintenance. BTLLC NUI is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC NUI and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC NUI must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC NUI submits an order for Line Sharing. Splitter Option A (Splitter Option 1): Splitter in NUI Collocation Area In this configuration, the BTLLCNUI-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC NUI in its own Collocation space within the Customer’s serving End Office. The Verizon -provided Verizon-provided dial tone is routed through the splitter in the BTLLC NUI Collocation area. Any rearrangements will be the responsibility of BTLLCNUI. Splitter Option C (Splitter Option 2: ): Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCNUI-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed employs the use of a POT BayBay for interconnection of NUI’s Collocation arrangement with Verizon’s network, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation the POT Bay and the splitter. At BTLLC’s option, installation Installation of the splitter shelf may will be performed by Verizon or or, at NUI’s election, by a Verizon -approved Verizon-approved vendor designated by BTLLCNUI. In those serving End Offices where Verizon does not employ the use of a POT BayBay for interconnection of NUI’s Collocation arrangement with Verizon’s network, BTLLC the NUI provided splitter will be located via installed (mounted) in a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from relay rack between the MDF to NUI Collocation arrangement and the splitter and from the splitter to BTLLC's collocation arrangementMDF. The demarcation point is at the connection to splitter end of the DSLAM from cable connecting the NUI Collocation arrangement and the splitter. The installation Installation of the splitter shelf will be performed by Verizon or Verizon, or, at NUI’s election, by a Verizon -approved vendorVerizon-approved vendor designated by NUI. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC NUI upon completion of the required augmentwork. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC NUI must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Except as otherwise required by Applicable Law, standard Collocation intervals will apply (unless Applicable Law requires otherwise)apply. 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLECNUI’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC NUI must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC NUI will have the following options for testing shared Loops: 4.8.1 In serving End Offices where Verizon employs a POT Bay has been employed for use interconnection of NUI Collocation arrangement with Verizon’s network, the following options shall be available to BTLLCNUI. 4.8.1.1 Under Splitter Option 1A, BTLLC NUI may conduct its own physical tests of the shared Loop from BTLLCNUI’s collocation area. If it chooses to do so, BTLLC NUI may supply and install a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT)MLT test. Specifically, the BTLLC-NUI- provided test equipment may not interrupt an in-in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-NUI- provided test head would will be installed in NUI’s Collocaton area between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2C, upon request by NUI, either Verizon or or, at NUI’s election, a Verizon - Verizon-approved vendor selected by BTLLC may NUI will install a BTLLC- NUI-provided test head to enable BTLLC NUI to conduct remote physical tests of the shared Loop. This optional BTLLC- NUI-provided test head may will be installed at a point between bet ween the “line” port of the splitter and the Verizon -provided Verizon-provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCNUI-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCNUI-provided test equipment may not interrupt an in- in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCNUI-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided Verizon-provided test head, and, upon request, will provide these test results to BTLLC NUI during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, upon request by NUI, Verizon will make MLT access available to BTLLC NUI via RETAS after the service order has been completed. BTLLC NUI will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a temploye

Line Sharing. 4.1 ‘Line Sharing’ is an arrangement by which Verizon facilitates BTLLCBitWise’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCBitWise, solely for BTLLCBitWise’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC BitWise to provide such services. This Section 4 addresses Line Sharing over loops that are entirely copper loops. 4.2 In accordance with, but only to the extent required by Applicable Law, Verizon shall provide Line Sharing to BTLLC BitWise for BTLLCBitWise’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on the terms and conditions set forth herein. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC BitWise on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC BitWise at the rates set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon ’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCBitWise; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC BitWise must utilize the mechanized or manual Loop qualification processes described in the terms applicable to Digital Designed Loops, as referenced in Section 4.4.5 below to make this determination. 4.4.2 BTLLC BitWise shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC BitWise through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCBitWise’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCBitWise’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC BitWise orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon ’s Customers over such Loops. 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 above. Except as otherwise required by Applicable Law, provisioning intervals for the Line Sharing arrangement initially shall be the standard interval of six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall the Line Sharing interval applied to BTLLC BitWise be longer than the interval applied to any Affiliate of Verizon. Line Sharing arrangements that require pair swaps or line and station transfers in order to free up facilities will have a provisioning interval of no less than six (6) Business Days. 4.4.7 BTLLC BitWise must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC BitWise will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC BitWise shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC BitWise must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC BitWise for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLCBitWise’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC BitWise may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC BitWise is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC BitWise is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC BitWise and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC BitWise must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC BitWise submits an order for Line Sharing. In this configuration, the BTLLCBitWise-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC BitWise in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC BitWise Collocation area. Any rearrangements will be the responsibility of BTLLCBitWise. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLCBitWise-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC BitWise Collocation and the splitter. At BTLLCBitWise’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLCBitWise. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC BitWise provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC BitWise does not have access. BTLLC BitWise shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLCBitWise's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC BitWise upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC BitWise must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC BitWise must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC BitWise will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLCBitWise. 4.8.1.1 Under Splitter Option 1, BTLLC BitWise may conduct its own physical tests of the shared Loop from BTLLCBitWise’s collocation area. If it chooses to do so, BTLLC BitWise may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLCBitWise-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLCBitWise-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC BitWise may install a BTLLC- BitWise - provided test head to enable BTLLC BitWise to conduct remote physical tests of the shared Loop. This optional BTLLC- BitWise - provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLCBitWise-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLCBitWise-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLCBitWise-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC BitWise during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC BitWise via RETAS after the service order has been completed. BTLLC BitWise will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC BitWise will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC BitWise through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC BitWise has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t

Line Sharing. ‌ 4.1 ‘“Line Sharing’ ” is an arrangement by which Verizon facilitates BTLLCRACC’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), Multiple Virtual Line (MVL MVL) (a proprietary technology)), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, to a particular Customer location over an existing copper Loop that is being used simultaneously by Verizon to provide analog circuit-switched voice grade service to that Customer by making available to BTLLCRACC, solely for BTLLCRACC’s own use, the frequency range above the voice band on the same copper Loop required by BTLLC RACC to provide such services. This Section 4 addresses Line Sharing line sharing over loops that are entirely copper loops. 4.2 In accordance with, but only Subject to the extent required by Applicable Lawconditions set forth in Section 1, Verizon shall provide Line Sharing to BTLLC RACC for BTLLCRACC’s provision of ADSL (in accordance with T1.413), Splitterless ADSL (in accordance with T1.419), RADSL (in accordance with TR # 59), MVL (a proprietary technology), or any other xDSL technology that is presumed to be acceptable for shared line deployment in accordance with FCC rules, on in accordance with this Section 4 and the terms rates and conditions set forth hereincharges provided in the Pricing Attachment. Verizon shall provide Line Sharing to RACC in accordance with, but only to the extent required by, Applicable Law. In order for a Loop to be eligible for Line Sharing, the following conditions must be satisfied for the duration of the Line Sharing arrangement: (i) the Loop must consist of a copper loop compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules; (ii) Verizon must be providing simultaneous circuit-switched analog voice grade service to the Customer served by the Loop in question; (iii) the Verizon Customer’s dial tone must originate from a Verizon End Office Switch in the Wire Center where the Line Sharing arrangement is being requested; and (iv) the xDSL technology to be deployed by BTLLC RACC on that Loop must not significantly degrade the performance of other services provided on that Loop. 4.3 Verizon shall make Line Sharing available to BTLLC RACC at the rates and charges set forth in the Pricing Attachment. In addition to the recurring and nonrecurring charges shown in the Pricing Attachment for Line Sharing itself, the following rates shown in the Pricing Attachment and in Verizon Verizon’s applicable Tariffs are among those that may apply to a Line Sharing arrangement: (i) prequalification charges to determine whether a Loop is xDSL compatible (i.e., compatible with an xDSL service that is presumed to be acceptable for shared-line deployment in accordance with FCC rules); (ii) engineering query charges, engineering work order charges, or Loop conditioning (Digital Designed Loop) charges; (iii) charges associated with Collocation activities requested by BTLLCRACC; and (iv) misdirected dispatch charges, charges for installation or repair, manual intervention surcharges, trouble isolation charges, and pair swap/line and station transfer charges. 4.4 The following ordering procedures shall apply to Line Sharing: 4.4.1 To determine whether a Loop qualifies for Line Sharing, the Loop must first be prequalified to determine if it is xDSL compatible. BTLLC RACC must utilize the mechanized or manual Loop qualification processes described in the terms applicable to xDSL and Digital Designed Loops, as referenced in Section 4.4.5 below Loops to make this determination. 4.4.2 BTLLC RACC shall place orders for Line Sharing by delivering to Verizon a valid electronic transmittal service order or other mutually agreed upon type of service order. Such service order shall be provided in accordance with industry format and specifications or such format and specifications as may be agreed to by the Parties. 4.4.3 If the Loop is prequalified by BTLLC RACC through the Loop prequalification database, and if a positive response is received and followed by receipt of BTLLCRACC’s valid, accurate and pre-qualified service order for Line Sharing, Verizon will return an LSR confirmation within twenty- four (24) hours (weekends and holidays excluded) for LSRs with less than six (6) loops and within 72 hours (weekends and holidays excluded) for LSRs with six (6) or more loops. 4.4.4 If the Loop requires qualification manually or through an Engineering Query, three (3) additional Business Days will be generally be required to obtain Loop qualification results before an order confirmation can be returned following receipt of BTLLCRACC’s valid, accurate request. Verizon may require additional time to complete the Engineering Query where there are poor record conditions, spikes in demand, or other unforeseen events. 4.4.5 If conditioning is required to make a Loop capable of supporting Line Sharing and BTLLC RACC orders such conditioning, then Verizon shall provide such conditioning in accordance with the terms of this Agreement pertaining to Digital Designed Loops; or if this Agreement does not contain provisions pertaining to Digital Designed Loops, then in accordance with Verizon’s generally available rates, terms and conditions applicable to Digital Design Loops; provided, however, that Verizon shall not be obligated to provide Loop conditioning if Verizon establishes establishes, in the manner required by Applicable Law, that such conditioning is likely to degrade significantly the voice-grade service being provided to Verizon Verizon’s Customers over such Loops.Loops.‌ 4.4.6 The standard Loop provisioning and installation process will be initiated for the Line Sharing arrangement only once the requested engineering and conditioning tasks have been completed on the Loop. Scheduling changes and charges associated with order cancellations after conditioning work has been initiated are addressed in the terms pertaining to Digital Designed Loops, as referenced in Section 4.4.5 4.4.5, above. Except as otherwise required by Applicable Law, The standard provisioning intervals interval for the Line Sharing arrangement initially shall be as set out in the Verizon Product Interval Guide; provided that the standard provisioning interval for the Line Sharing arrangement shall not exceed the shortest of the following intervals: (a) six (6) Business Days applicable to 2W ADSL Loops. Where Applicable Law has ordered shorter intervals, business days; (b) the shortened intervals will apply in the event that a dispatch is not required, where conditioning work is not necessary and where facility modifications are not required. In no event shall standard provisioning interval for the Line Sharing arrangement that is stated in an applicable Verizon Tariff; or, (c) the standard provisioning interval applied to BTLLC be longer than for the Line Sharing arrangement that is required by Applicable Law. The standard provisioning interval applied to for the Line Sharing arrangement shall commence only once any Affiliate of Verizonrequested engineering and conditioning tasks have been completed. Line Sharing arrangements that require pair swaps or line and station transfers in order to free free-up facilities will may have a provisioning interval that is longer than the standard provisioning interval for the Line Sharing arrangement. In no event shall the Line Sharing interval offered to RACC be longer than the interval offered to any similarly situated Affiliate of no less than six (6) Business DaysVerizon. 4.4.7 BTLLC RACC must provide all required Collocation, CFA, Special ▇▇▇▇ Number (“SBN”) and NC/NCI information when a Line Sharing arrangement Arrangement is ordered. Collocation augments required, either at the Point of Termination (POT) Bay, Collocation node, or for splitter placement, must be ordered using standard collocation applications and procedures, unless otherwise agreed to by the Parties or specified in this Agreement. 4.4.8 The Parties recognize that Line Sharing is an offering that requires both Parties to make reasonable efforts to coordinate their respective roles in the roll out of Line Sharing in order to minimize provisioning problems and facility issues. BTLLC RACC will provide reasonable, timely, and accurate forecasts of its Line Sharing requirements, including splitter placement elections and ordering preferences. These forecasts are in addition to projections provided for other stand-alone unbundled Loop types. 4.5 To the extent required by Applicable Law, BTLLC shall provide Verizon with information regarding the type of xDSL technology that it deploys on each shared Loop. Where any proposed change in technology is planned on a shared Loop, BTLLC must provide this information to Verizon in order for Verizon to update Loop records and anticipate effects that the change may have on the voice grade service and other Loops in the same or adjacent binder groups. 4.6 As described more fully in Verizon Technical Reference 72575, the xDSL technology used by BTLLC for Line Share Arrangements shall operate within the Power Spectral Density (PSD) limits set forth in T1.413-1998 (ADSL), T1.419- 2000 (Splitterless ADSL), or TR59-1999 (RADSL), and MVL (a proprietary technology) shall operate within the 0 to 4 kHz PSD limits of T1.413-1998 and within the transmit PSD limits of T1.601-1998 for frequencies above 4 kHz, provided that the MVL PSD associated with audible frequencies above 4 kHz shall be sufficiently attenuated to preclude significantly degrading voice services. BTLLC’s deployment of additional Advanced Services shall be subject to the applicable FCC Rules. 4.7 BTLLC may only access the high frequency portion of a Loop in a Line Sharing arrangement through an established Collocation arrangement at the Verizon Serving Wire Center that contains the End Office Switch through which voice grade service is provided to Verizon ’s Customer. BTLLC is responsible for providing a splitter at that Wire Center that complies with ANSI specification T1.413 which employs Direct Current (“DC”) blocking capacitors or equivalent technology to assist in isolating high bandwidth trouble resolution and maintenance to the high frequency portion of the frequency spectrum, and is designed so that the analog voice "dial tone" stays active when the splitter card is removed for testing or maintenance through one of the splitter options described below. BTLLC is also responsible for providing its own Digital Subscriber Line Access Multiplexer (“DSLAM”) equipment in the Collocation arrangement and any necessary Customer Provided Equipment (“CPE”) for the xDSL service it intends to provide (including CPE splitters, filters and/or other equipment necessary for the end user to receive separate voice and data services across the shared Loop). Two splitter configurations are available. In both configurations, the splitter must be provided by BTLLC and must satisfy the same NEBS requirements that Verizon imposes on its own splitter equipment or the splitter equipment of any Verizon Affiliate. BTLLC must designate which splitter option it is choosing on the Collocation application or augment. Regardless of the option selected, the splitter arrangements must be installed before BTLLC submits an order for Line Sharing. In this configuration, the BTLLC-provided splitter (ANSI T1.413 or MVL compliant) is provided, installed and maintained by BTLLC in its own Collocation space within the Customer’s serving End Office. The Verizon -provided dial tone is routed through the splitter in the BTLLC Collocation area. Any rearrangements will be the responsibility of BTLLC. Splitter Option 2: Splitter in Verizon Area In this configuration, Verizon inventories and maintains a BTLLC-provided splitter (ANSI T1.413 or MVL compliant) in Verizon space within the Customer’s serving End Office. The splitters will be installed shelf-at-a-time. In those serving End Offices where Verizon has employed the use of a POT Bay, the splitter will be installed (mounted) in a relay rack between the POT Bay and the MDF. The demarcation point is at the splitter end of the cable connecting BTLLC Collocation and the splitter. At BTLLC’s option, installation of the splitter shelf may be performed by Verizon or by a Verizon -approved vendor designated by BTLLC. In those serving End Offices where Verizon does not employ the use of a POT Bay, BTLLC provided splitter will be located via a virtual-LIKE collocation arrangement, to which BTLLC does not have access. BTLLC shall receive its DSL traffic via tie cables running from the MDF to the splitter and from the splitter to BTLLC's collocation arrangement. The demarcation point is the connection to the DSLAM from the splitter. The installation of the splitter shelf will be performed by Verizon or by a Verizon -approved vendor. In either scenario, Verizon will control the splitter and will direct any required activity. Where a POT Bay is employed, Verizon will also perform all POT Bay work required in this configuration. Verizon will provide a splitter inventory to BTLLC upon completion of the required augment. 4.7.1 Where a new splitter is to be installed as part of an initial Collocation implementation, the splitter installation may be ordered as part of the initial Collocation application. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit a new Collocation application, with the application fee, to Verizon detailing its request. Standard Collocation intervals will apply (unless Applicable Law requires otherwise). 4.7.2 Where a new splitter is to be installed as part of an existing Collocation arrangement, or where the existing Collocation arrangement is to be augmented (e.g., with additional terminations at the POT Bay or CLEC’s collocation arrangement to support Line Sharing), the splitter installation or augment may be ordered via an application for Collocation augment. Associated Collocation charges (application and engineering fees) apply. BTLLC must submit the application for Collocation augment, with the application fee, to Verizon. Unless a longer interval is stated in Verizon’s applicable Tariff, an interval of seventy-six (76) Business Days shall apply. 4.8 BTLLC will have the following options for testing shared Loops: 4.8.1 In serving End Offices where a POT Bay has been employed for use the following options shall be available to BTLLC. 4.8.1.1 Under Splitter Option 1, BTLLC may conduct its own physical tests of the shared Loop from BTLLC’s collocation area. If it chooses to do so, BTLLC may supply a test head to facilitate such physical tests, provided that: (a) the test head satisfies the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate; and (b) the test head does not interrupt the voice circuit to any greater degree than a conventional Mechanized Loop Test (MLT). Specifically, the BTLLC-provided test equipment may not interrupt an in-progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. This optional BTLLC-provided test head would be installed between the “line” port of the splitter and the POT Bay in order to conduct remote physical tests of the shared Loop. 4.8.1.2 Under Splitter Option 2, either Verizon or a Verizon - approved vendor selected by BTLLC may install a BTLLC- provided test head to enable BTLLC to conduct remote physical tests of the shared Loop. This optional BTLLC- provided test head may be installed at a point between the “line” port of the splitter and the Verizon -provided test head that is used by Verizon to conduct its own Loop testing. The BTLLC-provided test head must satisfy the same NEBS requirements that Verizon imposes on its own test head equipment or the test head equipment of any Verizon Affiliate, and may not interrupt the voice circuit to any greater degree than a conventional MLT test. Specifically, the BTLLC-provided test equipment may not interrupt an in- progress voice connection and must automatically restore any circuits tested in intervals comparable to MLT. Verizon will inventory, control and maintain the BTLLC-provided test head, and will direct all required activity. 4.8.1.3 Under either Splitter Option, if Verizon has installed its own test head, Verizon will conduct tests of the shared Loop using a Verizon -provided test head, and, upon request, will provide these test results to BTLLC during normal trouble isolation procedures in accordance with reasonable procedures. 4.8.1.4 Under either Splitter Option, Verizon will make MLT access available to BTLLC via RETAS after the service order has been completed. BTLLC will utilize the circuit number to initiate a test. This functionality will be available on October 31, 2000. 4.8.2 In those serving End Offices where Verizon has not employed a POT Bay for use, BTLLC will not be permitted to supply its own test head; Verizon will make its testing system available to BTLLC through use of the on-line computer interface test system at ▇▇▇.▇▇▇.▇▇▇/▇▇▇▇. This system is available 24 hours, 7 days a week. 4.8.3 The Parties will continue to work cooperatively on testing procedures. To this end, in situations where BTLLC has attempted to use one or more of the foregoing testing options but is still unable to resolve the error or trouble on the shared Loop, Verizon and BTLLC will each dispatch a t