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] (Endorsement of the English version ETS 300661-1:1997 as German Standard)
Edition 2000-05

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Subaddressing (SUB) supplementary service - Part 1: Protocol specification [ITU-T Recommendation Q.2951, clause 8 (1995), modified]; English version ETS 300667-1:1996
Edition 1997-09

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Connected Line Identification Restriction (COLR) supplementary service - Part 1: Protocol specification [ITU-T Recommendation Q.2951, clause 6 (1995), modified]; English version ETS 300666-1:1996
Edition 1997-09

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol - Multiple Subscriber Number (MSN) supplementary service - Part 1: Protocol specification (ITU-T Recommendation Q.2951, clause 2 (1995), modified); English version ETS 300662-1:1996
Edition 1997-11

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol - Calling Line Identification Restriction (CLIR) supplementary service - Part 1: Protocol specification (ITU-T Recommendation Q.2951, clause 4 (1995), modified); English version ETS 300664-1:1996
Edition 1997-11

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

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol - Calling Line Identification Presentation (CLIP) supplementary service - Part 1: Protocol specification (ITU-T Recommendation Q.2951, clause 3 (1995), modified); English version ETS 300663-1:1996
Edition 1997-11

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol - Generic functional protocol- Core aspects - Part 1: Protocol specification [ITU-T Recommendation Q.2932.1, modified]; English version ETS 300796-1:1997
Edition 1998-07

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Supplementary service interactions - Part 1: Protocol specification; English version ETS 300669-1:1996
Edition 1997-09

Broadband Integrated Services Digital Network (B-ISDN) - Signalling system No. 7 - Interworking between Broadband ISDN User Part (B-ISUP) and Digital Subscriber Signalling system No. 2 (DSS2) (ITU-T Q.2650:1995, modified); English version ETS 300495:1997
Edition 1998-02