ITU-T F.350-1989 Application of Series T Recommendations - Telematic, Data Transmission and Teleconference Services - Operations and Quality of Service Study Group 1
that Study Group I defines the basic and optional features to be offered by the various telematic
Services
ITU-T F.350-1989 history
1989ITU-T F.350-1989 Application of Series T Recommendations - Telematic, Data Transmission and Teleconference Services - Operations and Quality of Service Study Group 1