Integrated Services Digital Network (ISDN) - Call Waiting (CW) supplementary service - Service description; English version ETS 300056:1991/A1:1996
Edition 1997-10

Transmission and Multiplexing (TM) - Synchronous Digital Hierarchy (SDH) information model of the Sub Network Connection Protection (SNCP) for the Network Element (NE) view; English version ETS 300493:1996
Edition 1997-01

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

Private Integrated Services Network (PISN) - Cordless Terminal Mobility (CTM) - Location handling services; service description; English version ETS 300691:1996
Edition 1996-12

European digital cellular telecommunications system (phase 2) - MultiParty (MPTY) supplementary services, stage 3; English version ETS 300568:1995
Edition 1995-08

Private Integrated Services Network (PISN) - Cordless Terminal Mobility (CTM) - Call handling additional network features; service description; English version ETS 300694:1996
Edition 1996-12

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

Telecontrol equipment and systems - Part 5: Transmission protocols; section 3: General structure of application data (IEC 60870-5-3:1992); German version EN 60870-5-3:1992
Edition 1994-07

Radio Equipment and Systems (RES) - Trans-European Trunked Radio (TETRA); Voice plus Data (V+D) - Part 10: Supplementary services stage 1; Part 10-15: Transfer of control; English version ETS 300392-10-15:1996
Edition 1997-09

Radio Equipment and Systems (RES) - Digital Enhanced Cordless Telecommunications (DECT); Data services profile (DSP) - Generic frame relay service with mobility (service types A and B, class 2); English version ETS 300701:1996
Edition 1998-06