Public transport - Service interface for real-time information relating to public transport operations - Part 3: Functional service interfaces; English version EN 15531-3:2022
Edition 2022-10

Integrated Services Digital Network (ISDN) - Call Forwarding Unconditional (CFU) supplementary service - Service description; English version ETS 300200:1994
Edition 1995-05

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

European digital cellular telecommunications system (Phase 2) - Mobile Station - Base Station System (MS-BSS) interface - General aspects and principles; English version ETS 300550:1994
Edition 1995-01

Radio Equipment and Systems (RES) - Land mobile service - Binary Interchange of Information and Signalling at 1200 bit/s (BIIS 1200); English version ETS 300230:1996
Edition 1998-06

Digital Video Broadcasting (DVB) - Interaction channel through Public Switched Telecommunications Network (PSTN)/Integrated Services Digital Network (ISDN); English version ETS 300801:1997
Edition 1998-06

Private Telecommunications Network (PTN) - Method for the specification of basic and supplementary services; English version ETS 300387:1994
Edition 1994-11

Universal Serial Bus interfaces for data and power - Part 2-1: Universal Serial Bus Specification, Revision 2.0 (IEC 100/2331/CDV:2014); English version FprEN 62680-2-1:2014
Edition 2015-05

Radio Equipment and Systems (RES) - Trans-European Trunked Radio (TETRA) - Packet Data Optimized (PDO) - Part 7: Security; English version ETS 300393-7:1997
Edition 1998-08

Distribution automation using distribution line carrier systems - Part 4-511: Data communication protocols; Systems management; CIASE protocol (IEC 61334-4-511:2000); German version EN 61334-4-511:2000, text in English
Edition 2001-05