Integrated Services Digital Network (ISDN); Three-Party (3PTY) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification (Endorsed by AENOR in October of 2004.)
NORMA vydaná dňa 1.10.2004
Designation standards: UNE-EN 300188-1V1.2.4
Publication date standards: 1.10.2004
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE