Integrated Services Digital Network (ISDN); Call Waiting (CW) supplementary service; service description; english version ETS 300056:1991
Edition 1992-09

Integrated Services Digital Network (ISDN); Direct Dialling In (DDI) supplementary service; service description; english version ETS 300062:1991
Edition 1992-09

Integrated Services Digital Network (ISDN); Direct Dialling In (DDI) supplementary service; functional capabilities and information flows; english version ETS 300063:1991
Edition 1992-09

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); Three-Party (3PTY) supplementary service; service description; English version ETS 300186:1993
Edition 1994-01

Integrated Services Digital Network (ISDN); syntax-based videotex lower layers protocols for ISDN packet mode (CCITT Recommendation X.31 case A and case B); English version ETS 300218:1993
Edition 1994-01

Equipment engineering (EE) - European telecommunication standard for equipment practice - Part 4: Engineering requirements for subracks in miscellaneous racks and cabinets; English version ETS 300119-4:1994
Edition 1994-08

Attachment requirements for Data Terminal Equipment (DTE) to connect to Packet Switched Public Data Networks (PSPDN) using CCITT recommendation X.25 (1984) interface; requirements applicable to DTEs subscribing to Link Access Procedure Balanced (LAPB) extended (modulo 128) operation; english version ETS 300123:1991
Edition 1992-08

Attachment requirements for Data Terminal Equipment (DTE) to connect to Packet Switched Public Data Networks (PSPDN) using CCITT recommendation X.25 (1984) interface; requirements applicable to DTEs subscribing to Multilink operation; english version ETS 300124:1991
Edition 1992-08

Radio equipment and systems; radiotelex equipment operating in the maritime MF/HF service; technical characteristics and methods of measurement; english version ETS 300067:1990
Edition 1992-03