Terristrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 10: Supplementary services stage 1; Sub-part 23: Call completion on no reply (Endorsement of the English version ETS 300392-10-23:1999 as German standard)
Edition 2000-05

Terrestial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 10: Supplementary services stage 1; Sub-part 7: Short number addressing (Endorsement of the English version ETS 300392-10-7:1999 as German standard)
Edition 2000-05

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 10: Supplementary services stage 1; Sub-part 10-20: Discreet listening (DL) (Endorsement of the English version ETS 300392-10-20:1999-05 as German Standard)
Edition 2001-08

Universal Personal Telecommunication (UPT) - UPT phase 2 - Functional specification of the interface of a UPT Integrated Circuit Card (ICC) and Public Switched Telephone Network (PSTN), Integrated Services Digital Network (ISDN) and Global System for Mobile communications (GSM) terminals (one pass and multiple pass authentication); Conformance test specification (Endorsement of the English version EN 301363 V 1.1.2 (1999-05) as German Standard)
Edition 2001-08

Digital Enhanced Cordless Telecommunications (DECT) - Global System for Mobile Communications (GSM); DECT/GSM interworking profile (IWP) - General description of service requirements; Functional capabilities and information flows (Endorsement of the English version EN 300466 V 1.2.1 (2001-01) as German Standard)
Edition 2002-05

Integrated Services Digital Network (ISDN) - Narrowband Multi-service Delivery System (NMDS) - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) specification for the NMDS Layer 2 PSTN-GW function (NTN side) (Endorsement of the English version EN 301141-6 V 1.1.1 (2002-02) as German Standard)
Edition 2002-11

Integrated Services Digital Network (ISDN) - Narrowband Multi-service Delivery System (NMDS) - Part 8: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) specification for the PSTN NMDS interface Layer 3 (LE side) (Endorsement of the English version EN 301141-8 V 1.1.1 (2002-02) as German Standard)
Edition 2002-11

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary service stage 3; Sub-part 12-5: List Search Call (LSC) (Endorsement of the English version ETS 300392-12-5:2000-09 as German standard)
Edition 2001-08

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3; Sub-part 18: Barring of Outgoing Calls (BOC) (Endorsement of the English version EN 300392-12-18 V 1.1.1 (2001-08) as German standard)
Edition 2003-04

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3; Sub-part 19: Barring of Incoming Calls (BIC) (Endorsement of the English version EN 300392-12-19 V 1.1.1 (2001-08) as German standard)
Edition 2003-04