Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 4: Calling Line Identification Restriction (CLIR) supplementary service [ITU-T Recommendation Q.731, clause 4 (1993), modified]
STANDARD published on 1.11.2001
Designation standards: ÖNORM EN 300356-4-V4.2.1
Publication date standards: 1.11.2001
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM