Integrated Services Digital Network (ISDN). Signalling System No.7 (SS7). ISDN User Part (ISUP) version 4 for the international interface. Part 4: Calling Line Identification Restriction (CLIR) supplementary service [ITU-T Recommendation Q.731, clause 4 (1993) modified]
NORM herausgegeben am 1.5.2002
Designation standards: STN EN 300356-4-V4.2.1
Classification mark: 870356
Catalog number: 20047
Publication date standards: 1.5.2002
Approximate weight : 300 g (0.66 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN