Full Description

Telcordia Technologies Specification of Signalling System Number 7

Document Number GR-246
Issue Number 10
Issue Date Dec 2005
Replaces TR-NWT-000246 Issue02

    ABSTRACT: This document replaces TR-NWT-000246.

    Issue 10 of GR-246, Telcordia Technologies Specification of Signalling System Number 7, replaces Issue 9.

    GR-246 defines the procedures and protocol by which network elements in the Public Switched Telephone Network (PSTN) exchange information over a digital signaling network. This enables wireless and wireline call setup, routing, and control.

    This document:

    • Contains the fundamental specification of SS7, which is then used as a basis for other generic requirements documents for Common Channel Signaling (CCS) network elements
    • Is based on the latest ANSI T1 Standards agreements and is critical for vendor implementations and carrier deployment
    • Ensures that SS7 messages are transported without alteration and ensures interoperability, potentially saving millions
    • Lists all the signaling point codes assigned to network carriers
    GR-246 covers the following protocols:
    • Message Transfer Part (MTP)
    • Signaling Connection Control Part (SCCP)
    • ISDN User Part (ISUP)
    • Transaction Capabilities Application Part (TCAP)
    • Operation, Maintenance, and Administration Part (OMAP)
    Issue 10 of GR-246 includes important changes, such as:
    • Addition of a new section specifying interworking between the Session Initiation Protocol (SIP) and the ISUP protocol
    • Updated signaling point code assignment guidelines to assign point codes for CCS network use by carrier
    • Updated signaling point code assignment list.
    When using GR-246, you may want to refer to GR-82, GR-317, GR-394, and/or GR-905..

    Components of this product are:

    Table of Contents:

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