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ISDN Primary Rate Interface (PRI): E9-1-1 Tandem/End Office to ISDN PSAP Interface


Document Number GR-2968
Issue Number 03
Issue Date Dec 2000
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    ABSTRACT: Issue 3 of GR-2968-, ISDN Primary Rate Interface (PRI): E9-1-1 Tandem/End Office to ISDN PSAP Interface, replaces Issue 2.

    Current wireline and wireless telecommunications industry growth, along with increasing demands on E9-1-1 service, have pushed the
    analog signaling protocol and some E9-1-1 tandem capabilities to their limits. Support for using the full 10 digits of the calling
    station's number at the E9-1-1 tandem and on the E9-1-1 tandem to the Public Safety Answering Point (PSAP) interface is required for
    E9-1-1 service to continue to work effectively. This generic requirements document focuses on this requirement and other needs created
    by industry factors.

    This GR provides requirements for providing equivalent functionality via an ISDN Primary Rate Interface (PRI) to the PSAP. It also
    provides generic requirements to support an Advanced Intelligent Network (AIN)-based E9-1-1 service architecture for an End Office
    serving an ISDN PSAP. An AIN-based architecture could also be used to support enhancements to existing E9-1-1 functionality brought
    about by a changing regulatory environment. This document provides generic requirements to support ISDN PRI signaling for the E9-1-1
    tandem/end office to PSAP interface and associated generic requirements for the E9-1-1 tandem/end office and the ISDN PRI features and
    functions necessary to interwork with E9-1-1 Service. Generic requirements for the interface to the PSAP are provided, including
    interaction of the PSAP's Customer Premises Equipment (CPE) with the E9-1-1 tandem as a network element, and some interworking of
    signaling. Please refer to GR-2953, Enhanced MF Signaling: E9-1-1 Tandem to PSAP Interface, and GR-2956, CCS/SS7
    Generic Requirements in Support of E9-1-1Service,
    for other generic requirements for E9-1-1.

    This document also addresses generic requirements for an end office in an AIN-based architecture to support an ISDN PRI PSAP to
    provide E9-1-1 service. These requirements provide interworking with AIN functionality to support current and future E9-1-1 service
    needs and capabilities. The generic requirements provided in this document describe generic functionality and are not intended to
    describe supplier-specific implementations.

    Issue 3 of GR-2968 includes generic requirements to support an end office serving an ISDN PSAP in an AIN-based E9-1-1 service
    architecture. This GR also includes changes to separate the determination of Calling Station Number for selective routing purposes
    (when explicit location information is not available), from the determination of what Calling Party information should be delivered to
    the PSAP. Additional minor changes have been included to make this document more consistent with GR-2956-CORE, and to separate the
    requirements for Selective and Fixed Transfer transfer codes from the feature processing for speed dialing that may also be used by
    administrative lines.

    This GR also includes one or more Issue List Reports (ILRs) that details open or closed technical issues in the main document. The
    ILR(s) are automatically sent free of charge to the GR document purchaser.

    Components of this product are:
    GR-2968-CORE
    GR-2968-ILR

    Table of Contents:

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