Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 2: ISDN supplementary service [ITU-T Recommendation Q.730 (1999), modified]
STANDARD published on 1.10.2002
Designation standards: ÖNORM EN 300356-2-V4.2.1
Publication date standards: 1.10.2002
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM