Long Distance. Virtual Voice Network) The following Enhanced VNS features are also available: VNS Card with Private Dialing Plans provides VITA employees’ remote, mobile access to the private network. In addition, range privileges can be assigned per card to manage available call types; and the VNS card has speed dialing capability allowing the user to program nine frequently dialed numbers. The VNS card does not presently support Project Account Codes. Remote 8xx Access to VNS allows the Network ID to be assigned to one remote toll-free number. Remote 8xx access provides access to the private dial plan and offers excellent fraud/cost controls. Project Account Codes are available for Remote 8xx Access Error Announcements International Private Dial Plans provide the ability to provision international numbers as part of the private dial plan, and effectively provides “Forced On-Net” features for an international number. Customized Range Privileges will define valid call types for a given Network ID by NPA and/or country/city codes. Applications of this feature might include only allowing international calls to Paris, France; allowing international calls to everywhere except England; or allowing all calls within the NANP except calls to Canada. Overflow to switched access on terminating busy signal A VNS private dial plan Will allow VITA to overflow calls to multiple trunk groups with the ability to route to a final switched terminating location Switched digital data capability Switched Digital Service provides digital connections in 64 Kbps increments of bandwidth via the public switched telephone network. Customer can access the Service via the following configurations:, LEC- provided Basic Rate Interface (“BRI”), and LEC-provided Primary Rate Interface (“PRI”): BRI, being a form of Integrated Services Digital Network (“ISDN”), offers the ability to use the same line for voice or data on a call-by-call basis. A BRI is a single line connection, the wiring for which is usually an ordinary twisted copper pair. However, BRI provides more functionality than an ordinary phone line or even SW 56 or switched 64 kbps service. In addition to voice and data capability, BRI offers two 64 kbps “bearer” (or “B”) channels to support the applications of VITA, while call set-up and signaling are performed on a separate “out-of-band” channel called the “D” channel. This arrangement is often called 2B + D. Depending on VITA’s CPE, the B channels can be combined to provide 128 kbps for a single application, or they can be used to support two different applications simultaneously, each one running at 64 kbps. As with SW 56, Customer can aggregate as many “B” channels as it needs to provide bandwidth-on- demand functionality. PRI, being another form of ISDN, provides call-by-call capability and uses 64 kbps B channels and out-of-band signaling channels. It differs from BRI, however, in that it is provisioned over a T1, typically with 23 B channels, while the 24th is a D channel to support signaling on the other 23. This arrangement is often called 23B + D.
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Sources: Telecommunications, Telecommunications