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 1.8.1994
Designation standards: STN ETS 300185-1
Classification mark: 870185
Catalog number: 71396
Publication date standards: 1.8.1994
The number of pages: 45
Approximate weight : 135 g (0.30 lbs)
Country: Slovak technical standard
Category: Technical standards STN