HELP! * GREY=local LOCAL HTML version of Foils prepared July 28,1995
Foil 20 Videoconferencing Standards
From HPDC95 Collaboration Presentation HPDC95 Tutorial Pentagon City -- August 1 1995. by Roman Markowski and Geoffrey Fox * See also color IMAGE
Today's videoconferencing systems are proprietary, requiring identical technology at each end of conference
Videoconferencing solutions are tied to one platform, special hardware or special network protocols
Some multivendor standards exist
T.120 - cross platform file and data exchange
F.700 - videotelephony and Videoconference standards (CCITT,93)
G.700 - CCITT,92
H.231 - covers Multipoint Control Units
H.233 - specifies the data encryption methodologies
H.241 - Signalling for conferencing
H.261 - compression component of H.320
H.320 - dominant standard developed by ITU-T; teleconferencing audio and video protocols
H.KEY, T.120, CIF, QCIF
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