Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol - Direct Dialling In (DDI) supplementary service - Part 1: Protocol specification [ITU-T Recommendation Q.2951, clause 1 (1995), modified]
STANDARD published on 1.12.1998
Designation standards: ÖNORM ETS 300661-1
Note: WITHDRAWN
Publication date standards: 1.12.1998
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM