Digital cellular telecommunications system (Phase 2) - Security related network functions (Endorsement of the English version ETS 300534:1997-08 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Handover procedures (Endorsement of the English version ETS 300527:1996-09 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Organization of subscriber data (Endorsement of the English version ETS 300526:1996-10 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2+) - Mobile Stations (MS) features (Endorsement of the English version ETS 300906:1998-06 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Alphabets and language-specific information (Endorsement of the English version ETS 300900:1998-01 as German standard)
Edition 2001-06

Digital cellular telecommunications system - Layer 1 - General requirements (Endorsement of the English version ETS 300936:1997-04 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Security related network functions (Endorsement of the English version ETS 300929:1998-07 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Service accessibility (Endorsement of the English version ETS 300921:1997-04 as German standard)
Edition 2001-06

Digital cellular telecommunications system - Subscriber Identity Modules (SIM) - Functional characteristics (Endorsement of the English version ETS 300922:1999-04 as German standard)
Edition 2001-06

Telecommunications security - Integrated Services Digital Network (ISDN) - Encryption key management and authentication system for audiovisual services (Endorsement of the English version ETS 300841:1998 as German standard)
Edition 1999-06