Integrated Services Digital Network (ISDN); Completion of Calls to Busy Subscriber (CCBS) supplementary service; Service description
NORM herausgegeben am 28.5.2001
Designation standards: ETSI EN 300357-V1.2.1
Publication date standards: 28.5.2001
The number of pages: 22
Approximate weight : 66 g (0.15 lbs)
Country: European technical standard
Kategorie: Technische Normen ETSI