IP telephone system
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United States of America Patent
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Dec 4, 2012
Grant Date -
Feb 26, 2009
app pub date -
Aug 19, 2008
filing date -
Aug 21, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
An IP telephone system according to the present invention includes a plurality of communication devices T1, T2 allowed to mutually communicate through a network (IP network); a server for executing a connection starting process of communication between the communication devices, as well as for controlling communication data transmitted and received between the server and the communication devices during the communication between the communication devices; and a data transmission and reception controller for mutually switching, upon input of a predetermined command, a communication mode between a standard communication mode and a power-saving communication mode in a condition that communication connection is established between the communication devices upon execution of the connection starting process. The sound data is transmitted and received between the communication devices and the server in the standard communication mode. Transmission and reception between the communication devices and the server is stopped with respect to the sound data below a predetermined level while being continued with respect to the sound data beyond the predetermined level received in the power saving communication mode.
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