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
NORM herausgegeben am 1.8.1999
Designation standards: ČSN EN 300356-17-V3.1.3
Classification mark: 877068
Catalog number: 56484
Publication date standards: 1.8.1999
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Kategorie: Technische Normen ČSN