T1.113-2000

Signalling System No. 7 (SS7) - Integrated Services Digital Network (ISDN) User Part (Revision of T1.113-1995; includes two Supplements: T1.113a-2000 & T1.113b-2001)

The Integrated Services Digital Network (ISDN) User Part defines the protocol which supports the signalling functions required to provide voice and non-voice services in an Integrated Services Digital Network. This standard is based on the Specification of Signalling System No. 7 for international use issued by ITU-T Study Group 11 in the year 2000. This standard is based on and uses, where applicable, the same signalling procedures, parameters, and message types as the internationally specified ISDN User Part of the ITU-T Signalling System No. 7. Working group T1S1.3 (Common Channel Signalling) has developed this standard to suit anticipated needs and applications within and between U. S. networks.