Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; functional capabilities and information flows; english version ETS 300140:1992
Edition 1992-12

Integrated Services Digital Network (ISDN); Call Waiting (CW) supplementary service; functional capabilities and information flows; english version ETS 300057:1992
Edition 1992-11

Integrated Services Digital Network (ISDN); Meet-Me Conference (MMC) supplementary service; functional capabilities and information flows; English version ETS 300165:1993
Edition 1994-01

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) - Videotelephony teleservice - Functional capabilities and information flows; English version ETS 300266:1994
Edition 1994-10

Integrated Services Digital Network (ISDN) - File Transfer Access and Management (FTAM) over ISDN based on simple file transfer profile; English version ETS 300388:1995
Edition 1995-08

Network Aspects (NA) - Metropolitan Area Network (MAN) - Interconnection of MAN Switching Systems (MSS) based on an Asynchronous Transfer Mode (ATM) interface; English version ETS 300405:1995
Edition 1995-11

Network Aspects (NA); Metropolitan Area Network (MAN); principles and architecture; English version ETS 300211:1992
Edition 1993-07

Radio Equipment and Systems (RES) - Private wide area paging service - Part 2: Functional characteristics and access protocol for private wide-area paging systems on shared channels; English version ETS 300719-2:1997
Edition 1998-07

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