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]
STANDARD published on 1.8.1998
Designation standards: ÖNORM EN 300403-1-V1.2.2
Note: WITHDRAWN
Publication date standards: 1.8.1998
The number of pages: 401
Approximate weight : 1234 g (2.72 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM