Private Integrated Services Network (PISN) - Specification, functional model and information flows - Wireless terminal authentication supplementary services [ISO/IEC 15432 (1999) modified] (Endorsement of the English version EN 301828 V1.1.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Single step call transfer supplementary service [ISO/IEC 19459 (2001) modified] (Endorsement of the English version EN 301918 V1.1.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Short message service supplementary service [ISO/IEC 21989 (2002) modified] (Endorsement of the English version EN 301990 V1.1.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Short message service [ISO/IEC 21990 (2002) modified] (Endorsement of the English version EN 301991 V1.1.1 (2003-06) as German standard)
Edition 2004-03

Digital cellular telecommunications system (Phase 2+) - Terminal Adaptation Functions (TAF) for services using asynchronous bearer capabilities (Endorsement of the English version ETS 300914:1998-07 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - General on Terminal Adaptation Functions (TAF) for Mobile Stations (MS) (Endorsement of the English version ETS 300913:1999-07 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Mobile Stations (MS) features (Endorsement of the English version ETS 300906:1998-06 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Teleservices supported by a GSM Public Land Mobile Network (PLMN) (Endorsement of the English version ETS 300905:1998-01 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2+) - Technical realization of Short Message Service (SMS) Point-to-Point (PP) (Endorsement of the English version ETS 300901:1998-12 as German standard)
Edition 2001-06

Fixed Radio Systems - Point-to-multipoint equipment - Direct Sequence Code Division/Time Division Multiple Access (DS-CD/TDMA) - Point-to-multipoint digital packet radio systems in frequency bands in the range 3 GHz to 11 GHz (Endorsement of the English version EN 301744 V 1.2.1 (2001-02) as German standard)
Edition 2002-01