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E9-1-1 Service Description

Document Number SR-4163
Issue Number 02
Issue Date May 1997

    ABSTRACT: E9-1-1 service provides a 3-digit universal telephone number, 9-1-1, that gives the public direct access to an emergency service
    bureau, typically called a Public Safety Answering Point (PSAP). This service is usually provided without a per-call charge to the
    calling subscriber.

    This Special Report (SR) describes the telecommunications network and its associated network elements and features needed to provide
    E9-1-1 service.

    It also describes capabilities of the PSAP, typically provided through the PSAP's Customer Premises Equipment (CPE), that interact
    with network elements, e.g., the E9-1-1 tandem. The E9-1-1 service description provided in this document is generic in that it
    describes the functionality that exists in the network today.

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