Historical
ANSI T1.113-1995
Signaling System No.7, ISDN User Part
This standard is based on ITU-T (formerly, CCITT) ISUP 1992 Recommendation of Signaling System No. 7 for international use issued by the CCIT Study Group XI (Published: 03/93) and additional recommendations meeting specific needs of U.S. networks. This standard is based on, and uses wherever applicable, the same signaling procedures, parameters and message types as the internationally specified Integrated Services Digital Network (ISDN) User Part of the ITU-T SS7 Recommendations. It is suited for anticipated needs and applications within and between U.S. networks. These specifications are the result of extensive work by the members of the T1S1.3 Working Group on U.S. standards for common channel signaling.
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