ITU-T Q.761-1993 (WITHDRAWN) Functional Description of the ISDN User Part of Signalling System No. 7 - Specifications of Signalling System No. 7 (Study Group XI) 12 pp
As a consequence of a reform process within the International Telecommunication Union (ITU), the CCITT ceased to exist as of 28 February 1993. In its place, the ITU Telecommunication Standardization Sector (ITU-T) was created as of 1 March 1993. Similarly
ITU-T Q.761-1993 history
1993ITU-T Q.761-1993 (WITHDRAWN) Functional Description of the ISDN User Part of Signalling System No. 7 - Specifications of Signalling System No. 7 (Study Group XI) 12 pp