Integrated Services Digital Network (ISDN); syntax-based videotex teleservice; service description; English version ETS 300262:1993
Edition 1994-05

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

Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; service description; english version ETS 300139:1992
Edition 1992-12

Network Aspects (NA); Connectionless Broadband Data Service (CBDS); part 4: address screening supplementary service; English version ETS 300217-4:1992
Edition 1993-07

Business TeleCommunications (BTC) - Planning of loudness rating and echo values for private networks digitally connected to the public network; English version ETS 300283:1994
Edition 1994-09

Terminal equipment (TE) - Facsimile group 4, class 1 equipment in the Integrated Services Digital Network (ISDN) - Terminal testing; English version ETS 300280:1994
Edition 1994-08

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Cordless Terminal Location Registration (CTLR) supplementary service; English version ETS 300693:1996
Edition 1996-09

Integrated Services Digital Network (ISDN) - Call Deflection (CD) supplementary service - Service description; English version ETS 300202:1994
Edition 1995-05

Transmission and Multiplexing (TM) - Flexible Multiplexer Equipment - Management and control functions; English version ETS 300461-2:1996
Edition 1997-07

Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; service description; english version ETS 300136:1992
Edition 1992-12