Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Signalling network layer for circuit-mode basic call control - Part 1: Protocol specification [ITU-T Recommendation Q.931 (1993), modified]
NORM herausgegeben am 1.3.1996
Designation standards: ÖNORM ETS 300403-1
Note: UNGÜLTIG
Publication date standards: 1.3.1996
The number of pages: 389
Approximate weight : 1198 g (2.64 lbs)
Country: Austrian technische Norm
Kategorie: Technische Normen ÖNORM