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DIN ETS 300665-1
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
Edition
1997-09
DIN EN 301060-1
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Basic call control; enhancement at the "b" service entry point for Virtual Private Network (VPN) applications - Part 1: Protocol specification (Endorsement of the English version EN 301060-1 V 1.2.2 (1998-04) as German standard)
Edition
2000-01
1999/303/EGEntsch
Commission Decision of 12 April 1999 on a common technical regulation for connection to the analogue public switched telephone networks (PSTNs) of terminal equipment supporting the voice telephony justified case service in which network addressing, if provided, is by means of dual tone multi-frequency (DTMF) signalling
Edition
1999-04-12
98/482/EGEntsch
Council Decision of 20 July 1998 on a common technical Regulation for the attachment requirements for connection to the analogue public switched telephone networks (PSTNs) of terminal equipment (excluding terminal equipment supporting the voice telephony justified case service) in which network addressing, if provided, is by means of dual tone multi-frequency (DTMF) signalling
Edition
1998-07-20
