Integrated Services Digital Network (ISDN) - Signalling System No.7 - ISDN User Part (ISUP) version 3 for the international interface - Part 17: Call Waiting (CW) supplementary service [ITU-T Recommendation Q.733, clause 1 (1992), modified]
STANDARD published on 1.12.1998
Designation standards: ÖNORM EN 300356-17-V3.1.3
Note: WITHDRAWN
Publication date standards: 1.12.1998
The number of pages: 17
Approximate weight : 51 g (0.11 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM