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H324
An ITU-T standard that provides point-to-point data, video, and audio conferencing over analog telephone lines (POTS). It can incorporate H.261 video encoding, but most implementations will probably use H.263, a scalable version of H.261 that adds a 128-by-96 Sub-QCIF (SQCIF) format. Because of H.263's efficient design, it may produce frame rates much like those of today's ISDN H.320 systems through inexpensive hardware-assisted modems. The H.324 family includes H.223, a multiplexing protocol. H.245, a control protocol, T.120, a suite of audiographics protocols and V.34, a modem specification.
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