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

Broadband Radio Access Networks (BRAN) - HIgh PErformance Radio Local Area Network (HIPERLAN) Type-1; Conformance testing specification - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version ETS 300836-2:1998 as German standard)
Edition 1999-07

Integrated Services Digital Network (ISDN); Line Hunting (LH) supplementary service - Digital Subscriber Signalling System No. one (DSS1) - Part 1: Protocol specification (Endorsement of the English version EN 301484-1 V 1.1.1 (2000-04) as German standard)
Edition 2001-02

Integrated Services Digital Network (ISDN) - Security tools (SET) procedures; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 301002-1 V 1.3.1 (2001-06) as German Standard)
Edition 2002-11

Integrated Services Digital Network (ISDN) - Completion of Calls to Busy Subscriber (CCBS) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300359-1 V 1.3.2 (2000-06) as German standard)
Edition 2001-05

Integrated Services Digital Network (ISDN) - Signalling System No. 7; ISDN User Part (ISUP); Application transport mechanism - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 301069-2 V 1.1.3 (2000-11) as German Standard)
Edition 2001-09

Integrated Services Digital Network (ISDN) - Line Hunting (LH) supplementary service; Digital Subscriber Signalling System No. one (DSS1) - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 301484-2 V 1.1.1 (2000-04) as German standard)
Edition 2001-02

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Switched virtual path capability - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 301487-2 V 1.1.1 (2000-09) as German standard)
Edition 2001-05

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Generic functional protocol for the support of supplementary services at the "b" service entry point for Virtual Private Network (VPN) applications - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 301061-4 V 1.1.4 (1999-10) as German standard)
Edition 2000-10

Corporate telecommunication Networks (CN) - Signalling interworking between QSIG and H.323 - Generic functional protocol for the support of supplementary services (ISO/IEC 21409 (2001), modified) (Endorsement of the English version EN 301905 V 1.1.1 (2003-02) as German standard)
Edition 2003-07