Integrated Services Digital Network (ISDN); Public Switched Telephone Network (PSTN); Virtual Card Calling (VCC); Service description
NORM herausgegeben am 14.3.1997
Designation standards: ETSI ETS 300711-ed.1
Publication date standards: 14.3.1997
The number of pages: 22
Approximate weight : 66 g (0.15 lbs)
Country: European technical standard
Kategorie: Technische Normen ETSI