Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Circuit-mode basic services [ISO/IEC 11572 (2000) modified] (Endorsement of the English version EN 300172 V1.5.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Generic functional protocol for the support of supplementary services [ISO/IEC 11582 (2002) modified] (Endorsement of the English version EN 300239 V1.3.1 (2003-06) as German standard)
Edition 2004-03

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 - Name identification supplementary service [ISO/IEC 13868 (2003), modified] (Endorsement of the English version DIN 300238 V1.3.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call diversion supplementary service (ISO/IEC 13872 (2003), modified) (Endorsement of the English version EN 300256 V1.3.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call transfer supplementary service (ISO/IEC 13865 (2003), modified) (Endorsement of the English version EN 300260 V1.3.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call priority interruption and call priority interruption protection supplementary services (ISO/IEC 15991 (2003), modified) (Endorsement of the English version EN 301655 V1.2.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call completion supplementary services (ISO/IEC 13870 (2003), modified) (Endorsement of the English version EN 300366 V1.3.1 (2004-01) as German standard)
Edition 2004-12

Information technology - Security techniques - Storage security (ISO/IEC 27040:2015); German version EN ISO/IEC 27040:2016
Edition 2017-03

Media and sound technology - Structured media cabling systems
Edition 2019-09