Private Integrated Services Network (PISN) - Specification, functional models and information flows - Private User Mobility (PUM); Registration supplementary service (ISO/IEC 17875 (2000), modified) (Endorsement of the English version EN 301822 V 1.1.1 (2000-10) as German standard)
Edition 2001-06

Telecommunications Management Network (TMN) - Plesiochronous Digital Hierarchy (PDH) information model for the Network Element (NE) view (Endorsement of the English version EN 300371 V 1.3.2 (2001-02) as German standard)
Edition 2001-12

Information processing; switching algebra, mathematical signs and symbols
Edition 1985-11

Integrated Services Digital Network (ISDN) - Explicit Call Transfer (ECT) supplementary service - Functional capabilities and information flows (Endorsement of the English version EN 300368 V 1.2.2 (1998-12) as German standard)
Edition 2000-12

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call completion supplementary services [ISO/IEC 13866 (1995) modified] (Endorsement of the English version EN 300365 V1.3.1 (2003-06) as German standard)
Edition 2004-03

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

Telecommunications Management Network (TMN) - Linear multiplex section protection configuration information model for the Network Element (NE) view (Endorsement of the English version EN 301268 V 1.1.1 (1999-05) as German Standard)
Edition 1999-12

Power consumption of information technology equipment - Measurement methods (IEC 62018:2003); German version EN 62018:2003
Edition 2004-07

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Wireless terminal location registration supplementary service and wireless terminal information exchange Additional Network Feature (ANF) (ISO/IEC 15429 (2003), modified) (Endorsement of the English version EN 301825 V1.1.1 (2004-01) as German standard)
Edition 2004-12

Telecommunications Management Network (TMN) - Asynchronous Transfer Mode (ATM) management information model for the X interface between Operation Systems (OSs) of a Virtual Path (VP)/Virtual Channel (VC) cross connected network - Part 1: Configuration management (Endorsement of the English version EN 300820-1 V 1.2.1 (2000-11) as German Standard)
Edition 2001-08