Integrated Services Digital Network (ISDN). Three-Party (3PTY) supplementary service. Digital Subscriber Signalling System No. one (DSS1) protocol. Part 1: Protocol specification
NORM herausgegeben am 1.12.1995
Designation standards: STN ETS 300188-1
Classification mark: 870188
Catalog number: 71398
Publication date standards: 1.12.1995
The number of pages: 38
Approximate weight : 114 g (0.25 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN