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

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3 - Sub-part 20: Discreet Listening (DL) (Endorsement of the English version EN 300 392-12-20 V1.2.1 (2012-04) as German standard)
Edition 2012-12

Terrestrial Trunked Radio (TETRA) - Technical requirements for Direct Mode Operation (DMO) - Part 8: Protocol Implementation Conformance Statement (PICS) proforma specification; Sub-part 3: Gateway Air Interface (AI) (Endorsement of the English version ETS 300396-8-3:1999 as German standard)
Edition 2000-05

Terrestrial Trunked Radio (TETRA) - Conformance testing specification - Part 4: Protocol testing specification for Direct Mode Operation (DMO); Sub-part 4-10: Abstract Test Suite (ATS) for Direct Mode Gateway (DM-GATE) (Endorsement of the English version ETS 300394-4-10:1999 as German standard)
Edition 2000-05

Terrestrial Trunked Radio (TETRA) - Conformance testing specification - Part 4: Protocol testing specification for Direct Mode Operation (DMO); Sub-part 9: Abstract Test Suite (ATS) for Mobile Station (MS) Gateway (Endorsement of the English version ETS 300394-4-9:1999 as German standard)
Edition 2000-05

Terrestrial Trunked Radio (TETRA) - Conformance testing specification - Part 4: Protocol testing specification for Direct Mode Operation (DMO); Sub-part 8: Test Suite Structure and test Purposes (TSS&TP) for Direct Mode Gateway (DM-GATE) (Endorsement of the English version ETS 300394-4-8:1999 as German standard)
Edition 2000-05

Terrestrial Trunked Radio (TETRA) - Packet Data Optimized (PDO) - Part 10: SDL model of Air Interface (AI) (Endorsement of the English version ETS 300393-10:1999 as German standard)
Edition 2000-05

Terristrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 11: Supplementary Services stage 2; Sub-part 20: Discreet listening (DL) (Endorsement of the English version ETS 300392-11-20:1999 as German standard)
Edition 2000-05