| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exchange-use main apparatus and an IP telephone system that allow integrated control of connected plural IP telephones. <P>SOLUTION: An IP-PBX server 90 is connected to a WAN or a public network, and has functionality to exchange connected plural smart-phones 10. Each of the smart-phones 10 includes nine pieces of flexible keys 32 for indicating an outgoing call or an outside call-in-progress with a red light to respond to the outside line. When any of the smart-phones 10 makes an outgoing call to an external mobile phone 210-1, the IP-PBX server 90 transmits, with a high priority order to all of the plural smart-phones 10, a NOTIFY request causing a predetermined flexible key 32 to indicate an outside call-in-progress, followed by transmitting/calling an INVITE request to the outside mobile phone 210-1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
