Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Data link layer - Part 2: General protocol specification [ITU-T Q.921 (1993), modified]; English version ETS 300402-2:1995
Edition 1996-06

Radio equipment and systems (RES) - Radiotelex equipment operating in the maritime MF/HF service - Technical characteristics and methods of measurement; English version ETS 300067:1990/A1:1993
Edition 1994-08

Network Aspects (NA) - Metropolitan Area Network (MAN) - Conformance specification for the Medium Access Control (MAC) layer management; English version ETS 300274:1994
Edition 1994-10

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Signalling network layer for circuit-mode basic call control - Part 4: Test Suite Structure and Test Purposes (TSS&TP) specification for the user; English version ETS 300403-4:1997
Edition 1997-11

Terminal Equipment (TE) - Telephony for hearing impaired people - Characteristics of telephone sets that provide additional receiving amplification for the benefit of the hearing impaired; English version ETS 300488:1996
Edition 1996-08

Integrated Services Digital Network (ISDN); CCITT signalling system no. 7; Transaction Capabilities Application Part (TCAP); English version ETS 300134:1992
Edition 1993-07

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol - Calling Line Identification Presentation (CLIP) supplementary service - Part 1: Protocol specification (ITU-T Recommendation Q.2951, clause 3 (1995), modified); English version ETS 300663-1:1996
Edition 1997-11

Broadband Integrated Services Digital Network (B-ISDN) - B-ISDN Operation and Maintenance (OAM) principles and functions; English version ETS 300404:1997
Edition 1998-07

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

Radio equipment and systems; radiotelex equipment operating in the maritime MF/HF service; technical characteristics and methods of measurement; english version ETS 300067:1990
Edition 1992-03