DIN ETS 300665-1:1997-09
Действует
Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Connected Line Identification Presentation (COLP) supplementary service - Part 1: Protocol specification [ITU-T Recommendation Q.2951, clause 5 (1995), modified]; English version ETS 300665-1:1996
