Integrated Services Digital Network (ISDN); support of CCITT recommendation X.21, X.21bis and X.20bis based Data Terminal Equipments (DTEs) by an ISDN; synchronous and asynchronous terminal adaption functions; english version ETS 300103:1990
Edition 1992-02

Satellite Earth Stations and Systems (SES) - Receive-only Very Small Aperture Terminals (VSATs) operating in the 11/12 GHz frequency bands; English version ETS 300157:1996
Edition 1998-12

Integrated Services Digital Network (ISDN) - Audiovisual services - Frame structure for a 64 kbit/s to 1920 kbit/s channel and associated syntax for inband signalling; English version ETS 300144:1996
Edition 1996-08

Integrated Services Digital Network (ISDN) - Primary rate User-Network Interface (UNI) - Part 2: Conformance test specification for interface IA and IB; English version ETS 300011-2:1998
Edition 1998-12

Integrated Services Digital Network (ISDN) - Access digital section for ISDN primary rate; English version ETS 300233:1994
Edition 1994-10

Digital Video Broadcasting (DVB) - DVB interfaces to Plesiochronous Digital Hierarchy (PDH) networks; English version ETS 300813:1997
Edition 1998-07

Integrated Services Digital Network (ISDN); user-network interface data link layer specification; application of CCITT recommendations Q.920/I.440 and Q.921/I.441; english version ETS 300125:1991
Edition 1992-05

Extensions for Financial Services (XFS) interface specification - Part 3: Printer Device Class Interface; programmer's reference; English version CWA 13449-3:1998
Edition 1999-03