Question 23/VIII - Equipment characteristics and protocols for audiographic conferencing (from Questions 19 and 26 of study period 1984-1988) Considering - that Study Group I had classified teleconference services into two groups of which one was defined as "Audiographic Conferences"; - that Study Group VIII has been studying new image coding which is a part of graphic communication in "Audiographic Conferences"; - that Study Group XV has considered the "Frame Structure" for application to audiovisual services (in particular, videophone, videoconference, etc.), which combine audio with visual information; - that Study Group XVIII has studied service and network interface aspects applied to the ISDN and wideband speech coding algorithms; ANNEX 1 (to Question 23/VIII) Draft Recommendation T.121 (Version 1)