Integrated Services Digital Network (ISDN). Closed User Group (CUG) supplementary service. Digital Subscriber Signalling System No. one (DSS1) protocol. Part 1: Protocol specification
NORM herausgegeben am 1.12.1995
Designation standards: STN ETS 300138-1
Classification mark: 870138
Catalog number: 71389
Publication date standards: 1.12.1995
The number of pages: 30
Approximate weight : 90 g (0.20 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN