Network Aspects (NA) - Universal Personal Telecommunication (UPT); Phase 1 - Service description; English version ETS 300779:1997
Edition 1998-07

Integrated Services Digital Network (ISDN); service requirements for telefax group 4; English version ETS 300120:1992
Edition 1993-06

Integrated Services Digital Network (ISDN); Malicious Call Identification (MCID) supplementary service; serving description; english version ETS 300128:1992
Edition 1992-12

Terminal Equipment (TE) - Telephony for the hearing impaired - Electrical coupling of telephone sets to hearing aids; English version ETS 300679:1996
Edition 1997-11

Satellite Earth Stations and Systems (SES) - Control and monitoring functions at a Very Small Aperture Terminals (VSAT); English version ETS 300160:1997
Edition 1998-03

Information technology - Security techniques - Code of practice for Information security controls based on ISO/IEC 27002 for telecommunications organizations (ISO/IEC 27011:2016); German version EN ISO/IEC 27011:2020
Edition 2021-10

Integrated Services Digital Network (ISDN); syntax-based videotex end-to-end protocols; circuit mode DTE-DTE; english version ETS 300079:1991
Edition 1992-09

Integrated Services Digital Network (ISDN); Terminal Portability (TP) supplementary service; service description; english version ETS 300053:1991
Edition 1992-09

Integrated Services Digital Network (ISDN) - Facsimile group 4 class 1 on the ISDN - Functional specification of the equipment; English version ETS 300087:1994
Edition 1994-11

Telecontrol equipment and systems - Part 6: Telecontrol protocols compatible with ISO standards and ITU-T recommendations; section 601: Functional profile for providing the connection-oriented transport service in end system connected via permanent acces to a packet switched data network (IEC 60870-6-601:1994); German version EN 60870-6-601:1995
Edition 1995-09