Common use of Physical File Characteristics Clause in Contracts

Physical File Characteristics. 6.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSA’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA for the purpose of data transmission. Where a dedicated line is required, McLeodUSA will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSA. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA will be the responsibility of McLeodUSA. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA end for the purpose of data transmission will be the responsibility of McLeodUSA.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Your Communication Connection over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAYour Communication Connection’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Your Communication Connection for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Your Communication Connection will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Your Communication Connection will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAYour Version 2Q01: 07/19/01 Communication Connection. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Your Communication Connection will be the responsibility of McLeodUSAYour Communication Connection. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA Your Communication Connection’s end for the purpose of data transmission will be the responsibility of McLeodUSAYour Communication Connection.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Interlink Network Resources over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSA’s Interlink Network Resources’ Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Interlink Network Resources for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Interlink Network Resources will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Interlink Network Resources will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAInterlink Network Resources. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Interlink Network Resources will be the responsibility of McLeodUSAInterlink Network Resources. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA Interlink Network Resources’ end for the purpose of data transmission will be the responsibility of McLeodUSAInterlink Network Resources.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Centennial over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSACentennial’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Centennial for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Centennial will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Centennial will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSACentennial. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Centennial will be the responsibility of McLeodUSACentennial. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA Centennial’s end for the purpose of data transmission will be the responsibility of McLeodUSACentennial.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Broadslate over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSABroadslate’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Broadslate for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Broadslate will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Broadslate will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSABroadslate. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Broadslate will be the responsibility of McLeodUSABroadslate. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA Broadslate’s end for the purpose of data transmission will be the responsibility of McLeodUSA.Broadslate. Version 3Q00: 11/28/00

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA ▇▇▇▇ Communications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSA▇▇▇▇ Communications’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA ▇▇▇▇ Communications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA ▇▇▇▇ Communications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA ▇▇▇▇ Communications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSA▇▇▇▇ Communications. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA ▇▇▇▇ Communications will be the responsibility of McLeodUSA▇▇▇▇ Communications. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA ▇▇▇▇ Communications’s end for the purpose of data transmission will be the responsibility of McLeodUSA▇▇▇▇ Communications.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Buy-Tel over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSABuy-Tel’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Buy-Tel for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Buy-Tel will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Buy-Tel will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSABuy-Tel. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Buy-Tel will be the responsibility of McLeodUSABuy-Tel. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA Buy-Tel’s end for the purpose of data transmission will be the responsibility of McLeodUSA.Buy-Tel. Version 2Q01: 07/25/01

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Excelink Communications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAExcelink Communications’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Excelink Communications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Excelink Communications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Excelink Communications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAExcelink Communications. Additionally, all message toll charges associated with the use of Version 3Q00: 11/28/00 the dial circuit by McLeodUSA Excelink Communications will be the responsibility of McLeodUSAExcelink Communications. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA Excelink Communications’s end for the purpose of data transmission will be the responsibility of McLeodUSAExcelink Communications.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Rent-A-Line over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSARent-A-Line’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Rent-A- Line for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Rent-A- Line will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Rent-A-Line will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSARent-A-Line. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Rent-A-Line will be the responsibility of McLeodUSARent-A-Line. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA Rent-A-Line’s end for the purpose of data transmission will be the responsibility of McLeodUSA.Rent-A-Line. Version 2Q01: 07/25/01

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA QuantumShift over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAQuantumShift’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA QuantumShift for the purpose of data transmission. Where a dedicated line is required, McLeodUSA QuantumShift will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA QuantumShift will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAQuantumShift. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA QuantumShift will be the responsibility of McLeodUSAQuantumShift. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA QuantumShift’s end for the purpose of data transmission will be the responsibility of McLeodUSA.QuantumShift. Version 3Q00: 11/28/00

Physical File Characteristics. 6.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA PaeTec over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAPaeTec’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA PaeTec for the purpose of data transmission. Where a dedicated line is required, McLeodUSA PaeTec will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA PaeTec will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAPaeTec. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA PaeTec will be the responsibility of McLeodUSAPaeTec. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA PaeTec end for the purpose of data transmission will be the responsibility of McLeodUSAPaeTec.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Z-Tel over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAZ-Tel’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Z-Tel for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Z-Tel will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Z-Tel will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAZ-Tel. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Z- Tel will be the responsibility of McLeodUSAZ-Tel. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA Z-Tel’s end for the purpose of data transmission will be the responsibility of McLeodUSAZ-Tel.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA REI Communications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAREI Communications’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA REI Communications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA REI Communications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA REI Communications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAREI Communications. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA REI Communications will be the responsibility of McLeodUSAREI Communications. Associated Version 3Q00: 11/28/00 equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA REI Communications’s end for the purpose of data transmission will be the responsibility of McLeodUSAREI Communications.

Physical File Characteristics. 6.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Cbeyond over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSACbeyond’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Cbeyond for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Cbeyond will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Cbeyond will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSACbeyond. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Cbeyond will be the responsibility of McLeodUSACbeyond. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA Cbeyond end for the purpose of data transmission will be the responsibility of McLeodUSACbeyond.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA The MoneyPlace over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAThe MoneyPlace’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA The MoneyPlace for the purpose of data transmission. Where a dedicated line is required, McLeodUSA The MoneyPlace will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA The MoneyPlace will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAThe MoneyPlace. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA The MoneyPlace will be the responsibility of McLeodUSAThe MoneyPlace. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA The MoneyPlace’s end for the purpose of data transmission will be the responsibility of McLeodUSAThe MoneyPlace.

Physical File Characteristics. 6.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA ACCESS Integrated over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAACCESS Integrated’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA ACCESS Integrated for the purpose of data transmission. Where a dedicated line is required, McLeodUSA ACCESS Integrated will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA ACCESS Integrated will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAACCESS Integrated. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA ACCESS Integrated will be the responsibility of McLeodUSAACCESS Integrated. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA ACCESS Integrated end for the purpose of data transmission will be the responsibility of McLeodUSAACCESS Integrated.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA A Plus Connect, LLC over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAA Plus Connect, LLC’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA A Plus Connect, LLC for the purpose of data transmission. Where a dedicated line is required, McLeodUSA A Plus Connect, LLC will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA A Plus Connect, LLC will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAA Plus Connect, LLC. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA A Plus Connect, LLC will be the responsibility of McLeodUSAA Plus Connect, LLC. Associated equipment on the Version 2Q01: 07/25/01 BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA A Plus Connect, LLC’s end for the purpose of data transmission will be the responsibility of McLeodUSAA Plus Connect, LLC.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Dialogica Communications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSA’s Dialogica Communicatons’ Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Dialogica Communications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Dialogica Communications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Dialogica Communications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSADialogica Communications. Version 3Q00: 11/28/00 Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Dialogica Communications will be the responsibility of McLeodUSADialogica Communications. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA Dialogica Communicatons’ end for the purpose of data transmission will be the responsibility of McLeodUSADialogica Communications.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA CBX Communications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSA’s CBX Communications’ Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA CBX Communications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA CBX Communications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA CBX Communications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSACBX Communications. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA CBX Communications will be the responsibility of McLeodUSACBX Communications. Associated Version 3Q00: 11/28/00 equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA CBX Communications’ end for the purpose of data transmission will be the responsibility of McLeodUSACBX Communications.

Physical File Characteristics. 6.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Verizon Avenue over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAVerizon Avenue’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Verizon Avenue for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Verizon Avenue will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Verizon Avenue will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAVerizon Avenue. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Verizon Avenue will be the responsibility of McLeodUSAVerizon Avenue. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA Verizon Avenue end for the purpose of data transmission will be the responsibility of McLeodUSAVerizon Avenue.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Lightning Communications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSALightning Communications’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Lightning Communications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Lightning Communications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Lightning Communications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSALightning Version 2Q00: 8/17/00 Communications. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Lightning Communications will be the responsibility of McLeodUSALightning Communications. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA Lightning Communications’s end for the purpose of data transmission will be the responsibility of McLeodUSALightning Communications.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Tel-America Communications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSATel-America Communications’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-non- compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Tel- America Communications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Tel-America Communications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Tel-America Communications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSATel- America Communications. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Tel-America Communications will be the responsibility of McLeodUSATel-America Communications. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA Tel-America Communications’s end for the purpose of data transmission will be the responsibility of McLeodUSATel-America Communications.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA King Tel, Inc. over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAKing Tel, Inc.’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA King Tel, Inc. for the purpose of data transmission. Where a dedicated line is required, McLeodUSA King Tel, Inc. will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA King Tel, Inc. will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSA. King Tel, Inc.. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA King Tel, Inc. will be the responsibility of McLeodUSA. King Tel, Inc.. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA King Tel, Inc.’s end for the purpose of data transmission will be the responsibility of McLeodUSA.King Tel, Inc..

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA NTERA, INC. over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSANTERA, INC.’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA NTERA, INC. for the purpose of data transmission. Where a dedicated line is required, McLeodUSA NTERA, INC. will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA NTERA, INC. will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSA. NTERA, INC.. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA NTERA, INC. will be the responsibility of McLeodUSA. NTERA, INC.. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA NTERA, INC.’s end for the purpose of data transmission will be the responsibility of McLeodUSA.NTERA, INC.. Version 3Q00: 11/28/00

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA EPB Telecommunications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSA’s EPB Telecommunications' Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA EPB Telecommunications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA EPB Telecommunications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA EPB Telecommunications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAEPB Telecommunications. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA EPB Telecommunications will be the responsibility of McLeodUSAEPB Telecommunications. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA EPB Telecommunications' end for the purpose of data transmission will be the responsibility of McLeodUSAEPB Telecommunications.

Physical File Characteristics. 6.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA MET Communications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAMET Communications’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA MET Communications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA MET Communications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA MET Communications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAMET Communications. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA MET Communications will be the responsibility of McLeodUSAMET Communications. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. All equipment, including modems and software, that is required on McLeodUSA MET Communications end for the purpose of data transmission will be the responsibility of McLeodUSAMET Communications.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Sail NetWorks over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSASail NetWorks’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Sail NetWorks for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Sail NetWorks will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Sail NetWorks will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSASail NetWorks. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Sail NetWorks will be the responsibility of McLeodUSASail NetWorks. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the parties. Version 2Q00: 8/17/00 All equipment, including modems and software, that is required on McLeodUSA Sail NetWorks’s end for the purpose of data transmission will be the responsibility of McLeodUSASail NetWorks.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA CBX Communications over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSA’s CBX Communications’ Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA CBX Communications for the purpose of data transmission. Where a dedicated line is required, McLeodUSA CBX Communications will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA CBX Communications will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSACBX Communications. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA CBX Communications will be the responsibility of McLeodUSACBX Communications. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA CBX Communications’ end for the purpose of data transmission will be the responsibility of McLeodUSACBX Communications.

Physical File Characteristics. 6.2.1 7.6.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Knology over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSA’s Knology's Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.6.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Knology for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Knology will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Knology will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAKnology. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Knology will be the responsibility of McLeodUSAKnology. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, software that is required on McLeodUSA Knology's end for the purpose of data transmission will be the responsibility of McLeodUSAKnology.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA AllSouth Phone Connect over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAAllSouth Phone Connect’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA AllSouth Phone Connect for the purpose of data transmission. Where a dedicated line is required, McLeodUSA AllSouth Phone Connect will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA AllSouth Phone Connect will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSAAllSouth Phone Connect. Version 2Q01: 07/25/01 Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA AllSouth Phone Connect will be the responsibility of McLeodUSAAllSouth Phone Connect. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA AllSouth Phone Connect’s end for the purpose of data transmission will be the responsibility of McLeodUSAAllSouth Phone Connect.

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Phone Link, Inc. over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAPhone Link, Inc.’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Phone Link, Inc. for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Phone Link, Inc. will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Phone Link, Inc. will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSA. Phone Link, Inc.. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Phone Link, Inc. will be the responsibility of McLeodUSA. Phone Link, Inc.. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA Phone Link, Inc.’s end for the purpose of data transmission will be the responsibility of McLeodUSA.Phone Link, Inc.. Version 3Q00: 11/28/00

Physical File Characteristics. 6.2.1 7.2.1 The Enhanced Optional Daily Usage Feed will be distributed to McLeodUSA Flatel, Inc. over their existing Optional Daily Usage File (ODUF) feed. The EODUF messages will be intermingled among McLeodUSAFlatel, Inc.’s Optional Daily Usage File (ODUF) messages. The EODUF will be a variable block format (2476) with an LRECL of 2472. The data on the EODUF will be in a non-compacted EMI format (175 byte format plus modules). It will be created on a daily basis (Monday through Friday except holidays). 6.2.2 7.2.2 Data circuits (private line or dial-up) may be required between BellSouth and McLeodUSA Flatel, Inc. for the purpose of data transmission. Where a dedicated line is required, McLeodUSA Flatel, Inc. will be responsible for ordering the circuit, overseeing its installation and coordinating the installation with BellSouth. McLeodUSA Flatel, Inc. will also be responsible for any charges associated with this line. Equipment required on the BellSouth end to attach the line to the mainframe computer and to transmit successfully ongoing will be negotiated on a case by case basis. Where a dial-up facility is required, dial circuits will be installed in the BellSouth data center by BellSouth and the associated charges assessed to McLeodUSA. Flatel, Inc.. Additionally, all message toll charges associated with the use of the dial circuit by McLeodUSA Flatel, Inc. will be the responsibility of McLeodUSA. Flatel, Inc.. Associated equipment on the BellSouth end, including a modem, will be negotiated on a case by case basis between the partiesParties. All equipment, including modems and software, that is required on McLeodUSA Flatel, Inc.’s end for the purpose of data transmission will be the responsibility of McLeodUSA.Flatel, Inc.. Version 2Q01: 07/25/01