Corporate telecommunication Networks (CN) - Signalling interworking between QSIG and H.323 - Call Completion supplementary services [ISO/IEC 21991 (2002) modified]
NORM herausgegeben am 1.5.2003
Designation standards: ÖNORM EN 301989-V1.1.1
Publication date standards: 1.5.2003
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: Austrian technische Norm
Kategorie: Technische Normen ÖNORM