Integrated Service Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User part (ISUP) version 4 for the international interface - Part 21: Anonymous Call rejection (ACR) supplementary service (ITU-T Recommendation Q.731, clause 4 (1993)) (Endorsement of the English version EN 300356-21 V 4.2.1 (2001-07) as German standard)
Edition 2002-01

Network aspects (NA); accessibility for 64 kbit/s circuit switched international end-to-end ISDN traffic relations; English version ETS 300251:1993
Edition 1994-04

Integrated Services Digital Network (ISDN) - Signalling System No. 7 - Message Transfer Part (MTP) to support international interconnection - Part 1: Protocol specification [ITU-T Recommendations Q.701, Q.702, Q.703, Q.704, Q.705, Q.706, Q.707 and Q.708 modified] (Endorsement of the English version EN 300008-1 V1.3.2 (2003-06) as German standard)
Edition 2004-07

Health informatics - Requirements for international machine-readable coding of medicinal product package identifiers (ISO/TS 16791:2020); German version CEN ISO/TS 16791:2020
Edition 2021-02

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) - Signalling System No. 7; ISDN User Part (ISUP) version 2 for the international interface - Part 34: Protocol Implementation Conformance Statement (PICS) proforma specification for supplementary services (Endorsement of the English version EN 300356-34 V 3.0.5 (2000-09) 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 35: Test Suite Structure and Test Purposes (TSS&TP) specification for supplementary services (Endorsement of the English version EN 300356-35 V 3.1.2 (2000-09) as German standard)
Edition 2001-09

Integrated Service Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User part (ISUP) version 4 for the international interface - Part 20: Completion of Calls on No Reply (CCNR) supplementary service (ITU-T Recommendation Q.733, clause 5 (1999), modified) (Endorsement of the English version EN 300356-20 V 4.3.1 (2001-07) as German standard)
Edition 2002-01

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 18: Completion of Calls to Busy Subscriber (CCBS) supplementary service (ITU-T Recommendation Q.733, clause 3 (1997), modified) (Endorsement of the English version EN 300356-18 V 4.1.2 (2001-07) as German standard)
Edition 2002-01