Integrated Services Digital Network (ISDN); Multiple Subscriber Number (MSN) supplementary service; service description; english version ETS 300050:1991
Edition 1992-09

Integrated Sevices Digital Network (ISDN); 3,1 kHz telephony teleservice; attachment requirements for handset terminals; english version ETS 300085:1990
Edition 1992-02

Integrated Services Digital Network (ISDN); circuit-mode 64 kbit/s unrestricted 8 kHz structured bearer service category; service description; english version ETS 300108:1992
Edition 1993-04

Integrated Services Digital Network (ISDN); circuit-mode 64 kbit/s 8 kHz structured bearer service category usable for 3,1 kHz audio information transfer; service description; english version ETS 300110:1992
Edition 1993-04

European digital cellular telecommunications system (Phase 2) - Subscriber Identity Modules (SIM), Functional characteristics; English version ETS 300509:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - Technical realisation of operator determined barring; English version ETS 300533:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - Mobile Station - Base Station System (MS-BSS) interface - Channel structures and access capabilities; English version ETS 300552:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - Network functions; English version ETS 300521:1994
Edition 1995-02

European digital cellular telecommunications system (Phase 2) - Alphabets and language-specific information; English version ETS 300628:1994
Edition 1995-03

European digital cellular telecommunications system (phase 2) - Advice of Charge (AoC) supplementary services, stage 3; English version ETS 300570:1995
Edition 1995-08