Integrated Services Digital Network (ISDN) - Public Switched Telephone Network (PSTN) - Virtual Card Calling (VCC); service description; English version ETS 300711:1997
Edition 1997-12

Integrated Services Digital Network (ISDN) - Public Switched Telephone Network (PSTN) - Televoting (VOT) service; service description; English version ETS 300713:1997
Edition 1997-12

Integrated Services Digital Network (ISDN); routing in support of ISUP version 1 services; english version ETS 300100:1992
Edition 1992-09

Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; service description; english version ETS 300136:1992
Edition 1992-12

Network aspects (NA) - Metropolitan Area Network (MAN) - Interconnection of MANs; English version ETS 300275:1994
Edition 1994-10

Network Aspects (NA) - Metropolitan Area Network (MAN) - Physical Layer Convergence Procedure (PLCP) for 622,080 Mbit/s; CCITT Recommendations G.707, G.708 and G.709; SDH based systems; English version ETS 300276:1994
Edition 1994-10

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

Integrated Services Digital Network (ISDN) - Circuit-mode multiple-rate unrestricted 8 kHz structured bearer service category - Service description; English version ETS 300389:1994
Edition 1995-05

Integrated Services Digital Network (ISDN) - Specification of the Remote Frame Handler Interface (RFHI); English version ETS 300458:1995
Edition 1996-04

Network Aspects (NA); Metropolitan Area Network (MAN); physical layer convergence procedure for 2,048 Mbit/s; English version ETS 300213:1992
Edition 1993-07