Integrated Services Digital Network (ISDN) - Public Switched Telephone Network (PSTN) - Virtual Card Calling (VCC); service description; English version ETS 300711:1997
Edition 1997-12

Integrated Services Digital Network (ISDN) - Public Switched Telephone Network (PSTN) - Televoting (VOT) service; service description; English version ETS 300713:1997
Edition 1997-12

Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; functional capabilities and information flows; english version ETS 300137:1992
Edition 1992-12

Business telecommunications (BT); Open Network Provision (ONP) technical requirements; 2048 kbit/s digital unstructured leased line (D2048U); network interface presentation; English version ETS 300246:1993
Edition 1994-04

Network aspects (NA) - Metropolitan Area Network (MAN) - Interconnection of MANs; English version ETS 300275:1994
Edition 1994-10

Integrated Services Digital Network (ISDN) - Videotelephony teleservice - Service description; English version ETS 300264:1994
Edition 1994-11

European digital cellular telecommunications system (Phase 2) - Restoration procedures; English version ETS 300525:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - Interworking between the Public Land Mobile Network (PLMN) and a Packet Switched Public Data Network/Integrated Services Digital Network (PSPDN/ISDN) for the support of packet switched data transmission services; English version ETS 300603:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - Terminal Adaptation Functions (TAF) for services using asynchronous bearer capabilities; English version ETS 300583:1994
Edition 1995-03

Terminal Equipment (TE) - Videotex - Terminal Facility Identifier (TFI); English version ETS 300076:1994
Edition 1995-05