The present invention relates to a user interface and a conference progress protocol for realizing multi-party video conferencing on a network, and more particularly, to a console box for informing participants of various conference situations and buttons having a function for real-The user interface is basically a conference chairman who is the chairman of the meeting. The information about all the meetings is managed by the chairman, and when the change occurs, the participant is notified of the change. A video conferencing system capable of reducing the complexity of progress of a video conference and reducing the burden on the network.
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