Integrated Sevices Digital Network (ISDN); 3,1 kHz telephony teleservice; attachment requirements for handset terminals; english version ETS 300085:1990
Edition 1992-02

Integrated Services Digital Network (ISDN); telephony 3,1 kHz teleservice; service description; english version ETS 300111:1992
Edition 1993-04

Integrated Services Digital Network (ISDN) and other digital telecommunications networks - Line transmission of non-telephone signals - Video codec for audiovisual services at p×64 kbits [ITU-T Recommendation H.261 (1993), modified] (Endorsement of the English version ETS 300142:1998 as German standard)
Edition 2000-06

Integrated Services Digital Network (ISDN) - Audiovisual services - Videotelephone systems and terminal equipment operating on one or two 64 kbit/s channels; English version ETS 300145:1996
Edition 1996-08

Integrated Services Digital Network (ISDN) - Telephony 7 kHz teleservice - Service description; English version ETS 300263:1994
Edition 1994-11

Integrated Services Digital Network (ISDN) - Telephony 7 kHz teleservice - Service description; English version ETS 300263:1994/A1:1996
Edition 1996-10

Integrated Services Digital Network (ISDN) - Videotelephony teleservice - Service description; English version ETS 300264:1994
Edition 1994-11

Integrated Services Digital Network (ISDN) - Telephony 7 kHz teleservice - Functional capabilities and information flows; English version ETS 300265:1994
Edition 1994-10

Integrated Services Digital Network (ISDN) - Videotelephony teleservice - Functional capabilities and information flows; English version ETS 300266:1994
Edition 1994-10

Telephony for hearing impaired people - Inductive coupling of telephone earphones to hearing aids; English version ETS 300381:1994
Edition 1995-09