Integrated Services Digital Network (ISDN) - Signalling System No. 7; Digital cellular telecommunications system (Phase 2); Application of ISDN User Part (ISUP) version 2 for the ISDN-Public Land Mobile Network (PLMN) signalling interface - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation extra Information for Testing (PIXIT) proforma specification (Endorsement of the English version ETS 300646-4:1998 as German Standard)
Edition 1999-09

Terrestrial Trunked Radio (TETRA) - Conformance testing specification - Part 2: Protocol testing specification for Voice plus Data (V+D); Sub-part 1: Test suite structure and test purposes (Endorsement of the English version ETS 300394-2-1:1998 as German standard)
Edition 1999-07

Integrated Services Digital Network (ISDN) - Signalling System No. 7; Digital cellular telecommunications system (phase 2); Application of ISDN User Part (ISUP) version 2 for the ISDN; Public Land Mobile Network (PLMN) signalling interface - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version ETS 300646-2:1998 as German standard)
Edition 1999-09

Terrestrial Trunked Radio (TETRA) - Packet Data Optimized (PDO) - Part 11: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version ETS 300393-11:1998 as German standard)
Edition 1999-12

Terrestrial Trunked Radio (TETRA) - Conformance testing specification - Part 5: Security; Sub-part 1: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version ETS 300394-5-1:1999 as German standard)
Edition 1999-12

Ultra-High Frequency (UHF) on-board vessels communications systems and equipment - Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU (Endorsement of the English version EN 300 720 V2.1.1 (2017-01) as German standard)
Edition 2017-05

Digital Enhanced Cordless Telecommunications (DECT) - Global System for Mobile communications(GSM) - Attachment requirements for DECT/GSM dual-mode terminal equipment (Endorsement of the English version EN 301439 V 1.1.1 (1999-03) as German standard)
Edition 2000-07

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 11: Supplementary services stage 2 - Sub-part 16: Pre-emptive Priority Call (PPC) (Endorsement of the English version EN 300392-11-16 V1.2.1 (2004-09) as German standard)
Edition 2005-04

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3 - Sub-part 16: Pre-emptive Priority Call (PPC) (Endorsement of the English version EN 300392-12-16 V1.2.1 (2004-09) as German standard)
Edition 2005-04

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: Supplementary services stage 3 - Sub-part 6: Call Authorized by Dispatcher (CAD) (Endorsement of the English version EN 300392-12-6 V1.3.1 (2006-02) as German standard)
Edition 2006-11