Integrated Services Digital Network (ISDN). Definition and usage of cause and location in Digital Subscriber Signalling System No. one (DSS1) and Signalling System No. 7 (SS7) ISDN User Part (ISUP) [ITU- T Recommendation Q.850 (1998) with addendum modified]
NORM herausgegeben am 1.12.2001
Designation standards: STN EN 300485-V1.3.1
Classification mark: 870485
Catalog number: 19546
Publication date standards: 1.12.2001
Approximate weight : 300 g (0.66 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN