Broadband Integrated Services Digital Network (B-ISDN). Digital Subscriber Signalling System No. two (DSS2) protocol. Direct Dialling In (DDI) supplementary service. Part 1: Protocol specification [ITU-T Recommendation Q.2951, clause 1 (1995), modified]
NORM herausgegeben am 1.7.2002
Designation standards: STN ETS 300661-1
Classification mark: 870661
Catalog number: 20535
Publication date standards: 1.7.2002
Approximate weight : 300 g (0.66 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN