| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a group call server, etc. which can perform re-participation to group calls by spontaneous performance of the terminal side and arbitrary timing. <P>SOLUTION: The group call server 10 provides the function of the group calls of the terminals with respect to a plurality of mobile communication terminals 20 via a mobile communications network, having an ID grant portion 12 which gives calls ID for specifying the group calls to the group calls to be established; an ID notification portion 13 for informing the calls ID given to the group calls by the ID grant portion 12 to the terminal which participates in the group calls established; a re-access request receiving portion 14 which receives a re-access request to the group calls, including the calls ID transmitted from the terminal cut from the group calls; and a re-participating control portion 15 which carries out the re-participation of the terminal which transmitted the re-access request to the group calls, concerning telephone conversation ID included in the re-access request received by the re-access request receiving section 14. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
