Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 16: Call Hold (HOLD) supplementary service [ITU-T Recommendation Q.733, clause 2 (1993), modified]
NORM herausgegeben am 1.11.2001
Designation standards: ÖNORM EN 300356-16-V4.1.2
Publication date standards: 1.11.2001
The number of pages: 9
Approximate weight : 27 g (0.06 lbs)
Country: Austrian technische Norm
Kategorie: Technische Normen ÖNORM