ATIS 1000110.1999(S2020)

This standard is based on the 1988 Blue Book specification of Signaling System No. 1 (SS#7) for international use issued by the CCITT Study Group XI (Vol. VI Fascicles VI.7 and VI.8) and is intended to be generally compatible with that standard. It has been appropriately modified for use within and between U.S. networks to meet the anticipated needs and applications of those entities. Formerly known as T1.110-1999(R2005).