ITU-T Q.1400-1993 Architecture Framework for the Development of Signalling and OA&M Protocols Using OSI Concepts - Intelligent Network (Study Group XI) 54 pp
The framework and guidance contained in this Recommendation apply to all signalling protocols, including those used to access network resources as well as those used within a network to provide services to users of the network.
ITU-T Q.1400-1993 history
1993ITU-T Q.1400-1993 Architecture Framework for the Development of Signalling and OA&M Protocols Using OSI Concepts - Intelligent Network (Study Group XI) 54 pp