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

EMC Network Standard - Part 1: Wire-line telecommunications networks using telephone wires; German version EN 50529-1:2010
Edition 2011-11

Environmental Engineering (EE) - Measurement methods and limits for power consumption in broadband telecommunication networks equipment (Endorsement of the English version EN 303 215 V1.3.1 (2015-04) as German standard)
Edition 2015-08

Corporate telecommunication Networks (CN) - Signalling interworking between QSIG and H.323 - Basic services (Endorsement of ISO/IEC 23289 (2002), modified) (Endorsement of the English version EN 302036 V 1.1.1 (2003-05) as German standard)
Edition 2003-12

EMC Network Standard - Part 1: Wire-line telecommunications networks using telephone wires
Edition 2010-11

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Path replacement Additional Network Feature (ANF) (ISO/IEC 13874 (2003), modified) (Endorsement of the English version EN 300259 V1.3.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Common information Additional Network Feature (ANF) (ISO/IEC 15772 (2003), modified) (Endorsement of the English version EN 301820 V1.2.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call identification and call linkage Additional Network Feature (ANF) (ISO/IEC 21889 (2001), modified) (Endorsement of the English version EN 301923 V1.1.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call interception Additional Network Feature (ANF) (ISO/IEC 15054 (2003), modified) (Endorsement of the English version EN 301265 V1.2.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Wireless terminal call handling Additional Network Feature (ANF) (ISO/IEC 15431 (2003), modified) (Endorsement of the English version EN 301827 V1.1.1 (2004-01) as German standard)
Edition 2004-12