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ADAPTER DEVICE FOR RECEIVER, IP TELEPHONE DEVICE, IP VIDEOPHONE SYSTEM, AS WELL AS COMMUNICATION LINKAGE METHOD, COMMUNICATIONS DEVICE, AND COMMUNICATIONS SYSTEM IN IP VIDEOPHONE SYSTEM
ADAPTER DEVICE FOR RECEIVER, IP TELEPHONE DEVICE, IP VIDEOPHONE SYSTEM, AS WELL AS COMMUNICATION LINKAGE METHOD, COMMUNICATIONS DEVICE, AND COMMUNICATIONS SYSTEM IN IP VIDEOPHONE SYSTEM
PROBLEM TO BE SOLVED: To easily establish linkage between an IP telephone device for transmitting and receiving voice data and an adapter device for a receiver for transmitting and receiving video data, in an IP videophone system.;SOLUTION: An IP videophone system 1 comprises an IP telephone device 3 for transmitting and receiving voice, data to and from a calling destination via an IP network 2, an adapter device 5 for a receiver 6 connected to the IP telephone device 3 via a router 7 for transmitting and receiving video data synchronized with the voice data to and from the calling destination, and the receiver 6 for reproducing video images based on the video data. The IP telephone device 3 and the adapter device 5 exchange their device information each other via the router 7, and establish mutual cooperation, based on the exchanged device information.;COPYRIGHT: (C)2007,JPO&INPIT
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