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ISDN Primary Rate Call Forwarding Interface Busy Generic Requirements


Document Number GR-2993
Issue Number 01
Issue Date Oct 1998
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    ABSTRACT: This document defines the Telcordia Technologies view of generic requirements for the Call Forwarding Interface Busy feature over an
    Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI). The Call Forwarding Interface Busy (CFIB) allows calls
    terminated to an ISDN PRI to be automatically redirected to another Directory Number (DN) when all B-channels on the PRI interface are
    busy. ISDN PRI CFIB is assigned on the PRI-interface basis that allows circuit-mode calls to be forwarded based on the bearer
    capability of the incoming call. At this time, the only subfeature of ISDN PRI Call Forwarding being defined is the ISDN PRIC CFIB
    subfeature. In the future, other subfeatures of ISDN PRI CF may be added.

    The requirements in this document apply to the following bearer capabilities: Circuit-Mode/Speech, Circuit-Mode 3.1-kHz Audio,
    Circuit-Mode Unrestricted Digital Information (64 kbps), and Circuit-Mode Unrestricted Information-Rate Adapted from 56 kbps to 64
    kbps.

    Components of this product are:
    GR-2993-CORE

    Table of Contents:

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