Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 21: Anonymous Call Rejection (ACR) supplementary service [ITU-T Recommendation Q.731, clause 4 (1993)]
NORM herausgegeben am 1.11.2001
Designation standards: ÖNORM EN 300356-21-V4.2.1
Publication date standards: 1.11.2001
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: Austrian technische Norm
Kategorie: Technische Normen ÖNORM