Integrated Services Digital Network (ISDN) - Closed User Group (CUG) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (incl. Diskette!!!)
STANDARD published on 1.10.1998
Designation standards: ÖNORM EN 300138-1-V1.3.4
Publication date standards: 1.10.1998
The number of pages: 32
Approximate weight : 96 g (0.21 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM