| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a recall system and recalling method to an IP telephone network which can reconnect to a terminal in and via the IP telephone network. <P>SOLUTION: This recall system is arranged between a public telephone switched network 8 including an emergency report facility 1 and an exchange 2, and the IP telephone network 5, stores sending source information, incoming call destination information and communication path information used at the time of calling the facility from an IP terminal 4 through the IP telephone network 5 in a speech communication management table of a gateway 3, and uses the sending source information and communication path information stored in the speech communication management table to recall the IP terminal that has made the call when the facility makes a recall request to the IP terminal. In the recall system, the gateway 3 discards the sending source information, the incoming call destination information and the communication path information stored in the speech communication management table in response to a disconnection request from the facility. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
