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Mobile Phone Terminal, Server, and Group Call System

  • US 20100016007A1
  • Filed: 04/26/2007
  • Published: 01/21/2010
  • Est. Priority Date: 04/27/2006
  • Status: Active Grant
First Claim
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1. A mobile phone terminal connectable with a group call system that performs a group call in which a phone call among a plurality of mobile phone terminals is performed, the mobile phone terminal comprising:

  • a receiver configured to receive, through a line switching network, an address registration request message including group call identification information identifying the group call and requesting address registration in a server provided in a packet switching network;

    a storage unit configured to store the group call identification information included in the address registration request message received through the line switching network, as a received call history; and

    a transmitter configured to accept calling operation for the group call corresponding to the group call identification information stored as the received call history;

    to acquire from the storage unit the group call identification information associated with the group call for which the calling operation has been accepted; and

    to transmit halfway participation calling information including the acquired group call identification information.

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