4 December 1984 Standardization Efforts In Video Teleconferencing
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This paper discusses the status of the activities of the International Consultative Committee on Telegraph and Telephone (CCITT) in preparing technical recommendations for international video teleconferencing systems. It presents a number of driving factors which influence the preparation of recommendations, and discusses the salient technical aspects of the work. The efforts to date, which have resulted in preparation of three new draft recommendations, have concentrated on the development of a hypothetical reference connection for long distance interconnections, selection of interconnect bit rates, and in the selection of the types of video codecs to be employed. A hypothetical reference connection (HRC) which shows interconnection of a 2.0 Mb/s region with a 1.5 Mb/s region indicates that the transmission bit rate used on the international portion would be 1.5 Mb/s. The CCITT Study Group is also considering interconnect bit rates at multiples and submultiples of 384 kb/s. The Study Group has selected interframe type codecs for some applications and is currently studying both interframe and intraframe codecs for use in teleconferencing systems.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paul J. Nordquist, Paul J. Nordquist, } "Standardization Efforts In Video Teleconferencing", Proc. SPIE 0504, Applications of Digital Image Processing VII, (4 December 1984); doi: 10.1117/12.944890; https://doi.org/10.1117/12.944890


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