Information and documentation - Bibliographic control characters (ISO 6630:1986)
Edition 1997-12

Integrated Services Digital Network (ISDN) - Signalling System No. 7; Signalling Connection Control Part (SCCP) - Interoperability test specification (Endorsement of the English version EN 301008 V 1.1.2 (1998-05) as German standard)
Edition 1999-09

Integrated Services Digital Network (ISDN) - Signalling System No. 7 - Signalling Connection Control Part (SCCP) (connectionless and connection-oriented class 2) to support international interconnection - Part 3: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (Endorsement of the English version ETS 300009-3:2000 as German standard)
Edition 2000-05

Integrated Services Digital Network (ISDN) - Signalling system No. 7; Signalling Connection Control Part (SCCP) (connectionless and connection-oriented) to support international interconnection - Part 1: Protocol specification (ITU-T-Recommendation Q.711 to Q.716, modified); (Endorsement of the English version ETS 300009-1 V 1.4.3 (2001-02) as German Standard)
Edition 2001-09

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); Signalling Connection Control Part (SCCP) (connectionless and connection-oriented class 2) to support international interconnection - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 300009-2 V 1.4.1 (2002-04) as German standard)
Edition 2003-08

Interface and basic data link control procedure for serial measurement data communication - Part 2: Start-stop transmission, measurement bus
Edition 2005-07

Information technology - 7-bit code
Edition 1999-02

Adaptation of 8-dot-braille to 7-bit coded character set
Edition 1987-04

Time and control code (IEC 60461:2010); German version EN 60461:2011
Edition 2011-08