Integrated Services Digital Network (ISDN); advice of charge: charging information during the call (AOC-D) supplementary service; service description; English version ETS 300179:1992
Edition 1993-09

Integrated Services Digital Network (ISDN); advice of charge: charging information at call set-up time (AOC-S) supplementary service; service description; English version ETS 300178:1992
Edition 1993-09

Integrated Services Digital Network (ISDN); advice of charge: charging information at the end of the call (AOC-E) supplementary service; service description; English version ETS 300180:1992
Edition 1993-09

Integrated Services Digital Network (ISDN); three-party (3PTY) supplementary service; functional capabilities and information flows; English version ETS 300187:1993
Edition 1994-01

Integrated Services Digital Network (ISDN); Teletex end-to-end protocol over the ISDN; English version ETS 300081:1993
Edition 1994-01

Integrated Services Digital Network (ISDN) - Call Forwarding Busy (CFB) supplementary service - Functional capabilities and information flows; English version ETS 300203:1994
Edition 1995-06

Integrated Services Digital Network (ISDN); Advice of Charge (AOC) supplementary service; functional capabilities and information flows; English version ETS 300181:1993
Edition 1994-01

Network Aspects (NA); connectionless broadband data service (CBDS); part 1: overview; English version ETS 300217-1:1992
Edition 1993-07

European digital cellular telecommunications system - Half rate speech - Part 1: Half rate speech processing functions; English version ETS 300581-1:1995
Edition 1996-07

European digital cellular telecommunications system - Half rate speech - Part 4: Comfort noise aspects for the half rate speech traffic channel; English version ETS 300581-4:1995
Edition 1996-07