Electromagnetic compatibility and Radio spectrum Matters (ERM) - Terrestrial Flight Telecommunications System (TFTS) - Part 2: Speech services, radio interface (Endorsement of the English version ETS 300326-2:1998-08 as German standard)
Edition 2001-02

Electromagnetic compatibility and Radio spectrum Matters (ERM) - Terrestrial Flight Telecommunications System (TFTS) - Part 3: Speech services, radio interface (Endorsement of the English version ETS 300326-3:1998-08 as German standard)
Edition 2001-02

Terminal Equipment (TE) - End-to-end protocols for multimedia information retrieval services - Part 2: Use of Digital Storage Media Command and Control (DSM-CC) for basic multimedia applications (Endorsement of the English version ETS 300777-2:1998 as German)
Edition 2001-04

Integrated Services Digital Network (ISDN) - Selective Call Forwarding (SCF) supplementary services (unconditional, busy and no reply) - Service description (Endorsement of the English version EN 301133 V 1.1.1 (1998,10) as German standard)
Edition 2000-09

Electronic Signatures and Infrastructures (ESI) - Electronic Registered Delivery Services - Part 4: Bindings - Sub-part 1: Message delivery bindings (Endorsement of the English version EN 319 522-4-1 V1.2.1 (2019-01) as a German standard)
Edition 2019-06

Integrated Services Digital Network (ISDN) - Signalling System No. 7; ISDN User Part (ISUP) version 2 for the international interface - Part 31: Protocol Implementation Conformance Statement (PICS) proforma specification for basis services (Endorsement of the English version EN 300356-31 V 3.0.3 (2000-08) as German Standard)
Edition 2001-09

Integrated Services Digital Network (ISDN) - Signalling System No. 7; ISDN User Part (ISUP) version 2 for the international interface - Part 32: Test Suite Structure and Test Purposes (TSS&TP) specification for basic services (Endorsement of the English version EN 300356-32 V 3.0.4 (2000-09) as German Standard)
Edition 2001-09

Integrated Services Digital Network (ISDN) - Call Forwarding No Reply (CFNR) supplementary service - Service description (Endorsement of the English version EN 300201 V 1.2.1 (2001-05) as German standard)
Edition 2002-07

Integrated Services Digital Network (ISDN) - Call Forwarding Busy (CFB) supplementary service - Service description (Endorsement of the English version EN 300199 V 1.2.1 (2001-06) as German standard)
Edition 2002-07

Electronic Signatures and Infrastructures (ESI) - Electronic Registered Delivery Services - Part 2: Semantic contents (Endorsement of the English version EN 319 522-2 V1.1.1 (2018-09) as a German standard)
Edition 2018-12