Patent ID: 8243906

Claim:
A group communication system comprising: a group ID number issuing apparatus for issuing a group ID number representing a group configured to include a plurality of subscribers selected at a subscriber and commonly used by any one of the plurality of subscribers belonging to the group; and a call control apparatus for, when there is an incoming call to the group ID number, making a call to terminal devices of the plurality of subscribers belonging to the group to enable intercommunication of all the terminal devices belonging to the group that have responded to the incoming call; wherein the call control apparatus comprises: an incoming call notification section for recognizing the incoming call and notifying the incoming call for the group ID number to the plurality of subscribers belonging to the group; a call control section for, when generation of the incoming call for the group ID number is notified from the incoming call notification section, making a call to the all of the terminal devices that have responded to the incoming call to enable intercommunication of the all of the terminal devices which have responded to the call; and a calling number notification mode identification section for identifying a selection of a calling number notification mode of notifying a calling number to the plurality of subscribers belonging to the group, or a calling number non-notification mode of not notifying the calling number to the plurality of subscribers belonging to the group; wherein the calling number notification mode identification section comprises: a calling number notification mode recognition section for recognizing the selection of the calling number notification mode, and making a call with the calling number notified to the plurality of subscribers belonging to the group; a calling number non-notification mode recognition section for recognizing the selection of the calling number non-notification mode without notifying the calling number to the plurality of subscribers belonging to the group; and a calling number notification type identification section for identifying a calling number notification type whether a type-1 calling number notification of notifying a type-1 extended ID number having an individual identifier capable of identifying each of the plurality of subscribers is selected or a type-2 calling number notification of notifying the subscribers of the group ID number is selected; wherein the call control section makes a call with either the type-1 calling number notification or the type-2 calling number notification to the plurality of subscribers belonging to the group in accordance with the calling number notification type identified by the calling number notification type identification section.