Integrated Services Digital Network (ISDN). Conference call, add-on (CONF) supplementary service. Digital Subscriber Signalling System No. one (DSS1) protocol. Part 1: Protocol specification
STANDARD published on 1.4.2002
Designation standards: STN EN 300185-1-V1.2.4
Classification mark: 870185
Catalog number: 19940
Publication date standards: 1.4.2002
The number of pages: 44
Approximate weight : 132 g (0.29 lbs)
Country: Slovak technical standard
Category: Technical standards STN