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

Digital cellular telecommunications system (Phase 2) - Call Barring (CB) supplementary services - Stage 3 (Endorsement of the English version ETS 300571:1996-08 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Multiplexing and multiple access on the radio path (Endorsement of the English version ETS 300574:1996-10 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Performance requirements on the mobile radio interface (Endorsement of the English version ETS 300561:1996-05 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Mobile radio interface layer 3 - Supplementary services specification; Formats and coding (Endorsement of the English version ETS 300564:1996-08 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Call Forwarding (CF) supplementary services - Stage 3 (Endorsement of the English version ETS 300566:1996-08 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Signalling interworking for supplementary services (Endorsement for the English version ETS 300606:1996-12 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Specification of the Subscriber Identity Module-Mobile Equipment (SIM-ME) interface (Endorsement of the English version ETS 300608:1999-12 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Event and call data (Endorsement of the English version ETS 300616:1998-02 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Unstructured Supplementary Service Data (USSD) - Stage 1 (Endorsement of the English version ETS 300625:1997-09 as German standard)
Edition 2001-04