Integrated Services Digital Network (ISDN) - Conference call, add-on (CONF) 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 300185-1-V1.2.4
Publication date standards: 1.10.1998
The number of pages: 45
Approximate weight : 135 g (0.30 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM