Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1999), modified]
STANDARD published on 1.11.2001
Designation standards: ÖNORM EN 300356-1-V4.2.1
Publication date standards: 1.11.2001
The number of pages: 44
Approximate weight : 132 g (0.29 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM