Full Description

LSSGR: Common Channel Signaling, Section 6.5

Document Number GR-606
Issue Number 06
Issue Date Dec 2004
Replaces TR-NWT-000606 Issue03

    ABSTRACT: Issue 6 of GR-606, LSSGR: Common Channel Signaling, Section 6.5, replaces Issue 5.

    Common Channel Signaling (CCS) is a method for exchanging information between Stored Program Control Systems (SPCSs) that are interconnected through a network of signaling links. CCS nodes may include, but are not limited to, switching systems, network databases, and operator services systems. When implemented on an SPCS, CCS serves a dual role:

    • It provides the transport mechanism necessary to carry feature information between the SPCS and other nodes in the CCS network.
    • It defines how service information shall be encoded to allow other nodes to correctly interpret CCS communications from the SPCS.
    The description of CCS in this document focuses on switching system capabilities required for signaling information transport. The procedures described in this document are based on the specification of Signaling System Number 7 (SS7).

    Issue 6 of GR-606 clarifies MTP Restart requirements to clearly state that Traffic Restart Allowed (TRA) messages are expected to be received from nodes that are available on directly accessible link sets.

    GR-606 replaces TR-NWT-000606.

    When using GR-606, you will need to refer to GR-246. You may also need to refer to GR-378, GR-478, GR-508, GR-2878, GR-82, TA-TSY-000083, GR-284, GR-317, GR-394, FR-439, TR-TSY-000458, GR-474, GR-510, GR-512, TR-TSY-000821, GR-833, GR-1245, GR-1298, GR-2857, GR-2932, ITU-T Rec. V.35, and/or ANSI T1 Technical Requirement No. 2.

    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.

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