Frame Structures for Use in the International Interconnection of Digital Codecs for Videoconferencing or Visual Telephony - Line Transmission of Non-Telephone Signals - Transmission of Sound-Programme and Television Signals (Study Group XV) 16 pp
Videoconferencing and visual telephony are new services which require greater bit rates than telephony. In
the studies in CCI?T on the ISDN and on international interworking, 384 kbit/s is emerging as an important
channel capacity for wideband services.