Digital cellular telecommunications system (Phase 2) - Technical realisation of supplementary services (Endorsement of the English version ETS 300529:1996-11 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) - 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) - Line identification supplementary services - Stage 1 (Endorsement of the English version ETS 300514:1998-06 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Closed User Group (CUG) supplementary services - Stage 1 (Endorsement of the English version ETS 300518:1996-05 as German standard)
Edition 2001-04

Digital cellular telecommunications system (Phase 2) - Call Waiting (CW) and Call Hold (HOLD) supplementary services - Stage 3 (Endorsement of the English version ETS 300567:1996-08 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) - 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) - 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) - Event and call data (Endorsement of the English version ETS 300616:1998-02 as German standard)
Edition 2001-04