| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an extension telephone system for both mobile phones and fixed line phones, capable of proxy responses without registering groups among terminals when calling a telephone terminal. <P>SOLUTION: Radio base stations include functions to relay between a SIP server and mobile phones; to monitor calling notification signals from fixed line phones; to monitor proxy responsive signals from mobile phones and fixed line phones within their own cover areas; to determine the matching condition of the proxy responsive signals and the calling notification signals and when the signals meet the condition, send proxy response request signals to the SIP server; to relay for connecting LAN under the radio base stations; and the like, thereby the proxy responses can be performed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
