Integrated Services Digital Network (ISDN) - Call Forwarding Unconditional (CFU) supplementary service - Functional capabilities and information flows; English version ETS 300204:1994
Edition 1995-06

Integrated Services Digital Network (ISDN); Multiple Subscriber Number (MSN) supplementary service; functional capabilities and information flows; english version ETS 300051:1991
Edition 1992-09

Ergonomic requirements for office work with visual display terminals (VDTs); part 2: guidance on task requirements (ISO 9241-2:1992); German version EN 29241-2:1993
Edition 1993-06

Integrated Services Digital Network (ISDN) - Signalling system no. 7 - ISDN User Part (ISUP) version 1; Test specification; English version ETS 300335:1994
Edition 1995-01

Private Integrated Services Network (PISN) - Cordless Terminal Mobility (CTM) - Call handling additional network features; functional capabilities and information flows; English version ETS 300695:1996
Edition 1996-12

Radio Equipment and Systems (RES) - Digital European Cordless Telecommunications (DECT) - DECT Authentication Module (DAM); English version ETS 300331:1995
Edition 1996-06

Integrated Services Digital Network (ISDN) - Signalling System No. 7; Transaction Capabilities (TC); Application Service Element (ASE) for Message Waiting Indication (MWI) supplementary service - Part 1: Protocol specification; English version ETS 300754-1:1997
Edition 1998-08

Integrated Services Digital Network (ISDN) - Call Forwarding Busy (CFB) supplementary service - Functional capabilities and information flows; English version ETS 300203:1994
Edition 1995-06

Integrated Services Digital Network (ISDN); Malicious Call Identification (MCID) supplementary service; serving description; english version ETS 300128:1992
Edition 1992-12

Data communication; multilink procedures; identical with ISO 7478:1987 (status as of 1989)
Edition 1989-11