Digital cellular telecommunications system (Phase 2) - Network architecture (Endorsement of the English version ETS 300522:1996-11 as German standard)
Edition 2001-04

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) - Functions related to Mobile Stations (MS) in idle mode (Endorsement of the English version ETS 300535:1996-09 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Technical realization of Short Message Service Cell Broadcast (SMSCB) (Endorsement of the English version ETS 300537:1996-05 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) - Transmission planning aspects of the speech service in the GSM Public Land Mobile Network (PLMN) system (Endorsement of the English version ETS 300540:1999-07 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Line identification supplementary services - Stage 2 (Endorsement of the English version ETS 300542:1999-01 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Unstructured Supplementary Service Data (USSD) - Stage 2 (Endorsement of the English version ETS 300549:1996-06 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Mobile radio interface layer 3 - Supplementary services specification; General aspects (Endorsement of the English version ETS 300558:1996-08 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Closed User Group (CUG) supplementary services - Stage 3 (Endorsement of the English version ETS 300569:1996-11 as German standard)
Edition 2001-04