Integrated Services Digital Network (ISDN). Call Forwarding Busy (CFB) supplementary service. Service description
NORM herausgegeben am 1.12.1995
Designation standards: STN ETS 300199
Classification mark: 870199
Catalog number: 71295
Publication date standards: 1.12.1995
The number of pages: 25
Approximate weight : 75 g (0.17 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN