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Call Processing


Document Number GR-505
Issue Number 02
Issue Date Dec 2006
Replaces TR-NWT-000505 Issue03
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    ABSTRACT: This document replaces TR-NWT-000505 and TA-TSY-001052.

    Issue 2 of GR-505, Call Processing, replaces Issue 1.

    This document presents the Telcordia view of generic requirements and objectives that apply to the processing of telecommunications
    calls associated with voice-band telephone service in a Stored Program Control System (SPCS). The SPCS call processing requirements
    apply to Time Division Multiplexing (TDM) switching systems.

    This document describes the interactions between a local SPCS and a line or trunk during call processing, and explains the
    associated switching system actions required. It also covers the four major events that can occur in a call sequence: origination,
    termination, disconnect, and interruption.

    Issue 2 of GR-505 includes the following:
    • Updates to call processing timing based on advances in technology, and provides an introduction to call control processing in a
      Next Generation Network (NGN) environment.

    • A discussion of the "softswitch" environment, which services are referred to as "Voice over IP (VoIP)."

    • A new Appendix on NGN call processing.


    When using GR-505, you may want to refer to GR-268, GR-317, GR-394, TR-NWT-000444, GR-477, GR-506,
    GR-507, GR-508, GR-510, GR-511, GR-520, GR-528, GR-531, GR-532, GR-568, GR-569, GR-570,
    GR-577, GR-586, GR-606, GR-674, GR-675, GR-677, GR-690, GR-691, GR-692, TR-TSY-000821>>,
    GR-822, TR-NWT-001050, GR-1100, TR-NWT-001268, GR-1298, GR-2932, and GR-3051.

    Components of this product are:
    GR-505-CORE

    Table of Contents:

    View Table of Contents


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