Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 20: Completion of Calls on No Reply (CCNR) supplementary service [ITU-T Recommendation Q.733, clause 5 (1999), modified]
STANDARD published on 1.11.2001
Designation standards: ÖNORM EN 300356-20-V4.3.1
Publication date standards: 1.11.2001
The number of pages: 19
Approximate weight : 57 g (0.13 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM