Integrated Services Digital Network (ISDN); Conference call, add-on (CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification
NORMA vydaná dňa 30.6.1998
Designation standards: ETSI EN 300185-1-V1.2.4
Publication date standards: 30.6.1998
The number of pages: 44
Approximate weight : 132 g (0.29 lbs)
Country: European technical standard
Kategória: Technické normy ETSI