Private Integrated Services Network (PISN) - Specification, functional model and information flows - Path replacement additional network feature [ISO/IEC 13863 (1998), modified] (Endorsement of the English version EN 300258 V1.3.1 (2003-06) as German standard)
Edition 2004-03

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 12: Conference call, add-on (CONF) supplementary service (ITU-T Recommendation Q.734, clause 1 (1993) and implementors guide (1998), modified) (Endorsement of the English version EN 300356-12 V 4.2.1 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 14: Explicit Call Transfer (ECT) supplementary service (ITU-T Recommendation Q.732, clause 7 (1996) and implementors guide (1998) modifiziert) (Endorsement of the English version EN 300356-14 V 4.2.1 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 19: Three-Party (3PTY) supplementary service (ITU-T Recommendation Q.734, clause 2 (1996) and implementors guide (1998), modified) (Endorsement of the English version EN 300356-19 V 4.2.1 (2001-07) as German standard)
Edition 2002-01

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

Digital cellular telecommunications system (Phase 2+) (GSM) - Subscriber Identity Module (SIM) conformance test specification (GSM 11.17, version 7.0.2, Release 1998) (Endorsement of the English version EN 301086 V 7.0.2 (1999-12) as German standard)
Edition 2003-04

Digital cellular telecommunications system (Phase 2+) (GSM) - User-to-User Signalling (UUS) - Service description, Stage 1 (GSM 02.87 version 7.1.2 Release 1998) (Endorsement of the English version EN 301702 V 7.1.2 (1999-12) as German standard)
Edition 2003-08

Digital cellular telecommunications system (Phase 2+) (GSM) - Adaptive Multi-Rate (AMR); Speech processing functions - General description (GSM 06.71 version 7.0.2 Release 1998) (Endorsement of the English version EN 301703 V 7.0.2 (1999-12) as German standard)
Edition 2003-08

Digital cellular telecommunications system (Phase 2+) - Adaptive Multi-Rate (AMR) speech transcoding (GSM 06.90 version 7.2.1 Release 1998) (Endorsement of the English version EN 301704 V7.2.1 (2000-04) as German standard)
Edition 2004-03

Digital cellular telecommunications system (Phase 2+) - Substitution and muting of lost frames for Adaptive Multi Rate (AMR) speech traffic channels (GSM 06.91 version 7.1.1 Release 1998) (Endorsement of the English version EN 301705 V7.1.1 (2000-04) as German standard)
Edition 2004-03