Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 2 for the international interface; Part 18: Completion of Calls to Busy Subscriber (CCBS) supplementary service
NORM herausgegeben am 21.2.1995
Designation standards: ETSI ETS 300356-18-ed.1
Publication date standards: 21.2.1995
The number of pages: 66
Approximate weight : 198 g (0.44 lbs)
Country: European technical standard
Kategorie: Technische Normen ETSI