Integrated Services Digital Network (ISDN); Conference call, add-on (CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification
NORM herausgegeben am 20.6.1995
Designation standards: ETSI ETS 300185-1-ed.1/Amd.1
Publication date standards: 20.6.1995
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: European technical standard
Kategorie: Technische Normen ETSI