Digital cellular telecommunications system (Phase 2) - Call Forwarding (CF) supplementary services - Stage 2 (Endorsement of the English version ETS 300543:1997-01 as German standard)
Edition 2001-04

European digital cellular telecommunications system (Phase 2) - Call Waiting (CW) and Call Hold (HOLD) supplementary services - Stage 2; English version ETS 300544:1995
Edition 1995-09

European digital cellular telecommunications system (Phase 2) - Multi Party (MPTY) supplementary services - Stage 2; English version ETS 300545:1995
Edition 1995-09

European digital cellular telecommunications system (Phase 2) - Closed User Group (CUG) supplementary services - Stage 2; English version ETS 300546:1996
Edition 1996-08

European digital cellular telecommunications system (Phase 2) - Advice of Charge (AoC) supplementary services - Stage 2; English version ETS 300547:1995
Edition 1995-09

European digital cellular telecommunications system (Phase 2) - Call Barring (CB) supplementary services - Stage 2; English version ETS 300548:1995
Edition 1995-09

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

European digital cellular telecommunications system (Phase 2) - Mobile Station - Base Station System (MS-BSS) interface - General aspects and principles; English version ETS 300550:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - GSM Public Land Mobile Network (PLMN) access reference configuration; English version ETS 300551:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - Mobile Station - Base Station System (MS-BSS) interface - Channel structures and access capabilities; English version ETS 300552:1994
Edition 1995-01