Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) - Enhancement for support of Number Portability (NP) (ITU-T-Recommendation Q.769.1 (2000), modified) (Endorsement of the English version EN 302097 V 1.2.2 (2000-09) as German Standard)
Edition 2001-09

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) V 4 interactions with the Intelligent Network Application Part (INAP) - Part 1: Protocol specification (ITU-T-Recommendation Q.1601:1999, modified) (Endorsement of the English version EN 301464 V 1.1.1 (2000-12) as German Standard)
Edition 2001-09

Integrated Services Digital Network (ISDN) - Definition and usage of cause and location in Digital Subscriber Signalling System No. one (DSS1) and Signalling System No. 7 (SS7) ISDN User Part (ISUP) (ITU-T Recommendation Q.850 (1998) with addendum, modified) (Endorsement of the English version EN 300485 V 1.3.1 (2001-04) as German standard)
Edition 2001-12

Integrated Services Digital Network (ISDN) - Signalling System No. 7; Signalling Connection Control Part (SCCP) - Interoperability test specification (Endorsement of the English version EN 301008 V 1.1.2 (1998-05) as German standard)
Edition 1999-09

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; signalling specification for frame relay service - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 301174-2 V 1.1.3 (1999-03) as German Standard)
Edition 2000-05

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; connection characteristics; negotiation during call/connection establishment phase - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 301067-2 V 1.1.3 (1999-05) as German Standard)
Edition 2000-05

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; connection characteristics; negotiation during call/connection establishment phase - Part 1: Protocol specification [ITU-T Q.2962 (1996), modified] (Endorsement of the English version EN 301067-1 V 1.1.3 (1999-05) as German Standard)
Edition 2000-05

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; signalling specification for frame relay service - Part 1: Protocol specification [ITU-T-Recommendation Q.2933 (1996), modified] (Endorsement of the English version EN 301174-1 V 1.1.2 (1998-10) as German Standard)
Edition 2000-05

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol - Connection characteristics - Modification procedures for sustainable cell rate parameters - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 301276-2 V 1.1.3 (1999-03) as German Standard)
Edition 2000-05

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; connection characteristics; modification procedures for sustainable cell rate parameters - Part 1: Protocol specification [ITU-T-Recommendation Q.2963.2 (1997), modified] (Endorsement of the English version EN 301276-1 V 1.1.3 (1999-03) as German Standard)
Edition 2000-05