Call control system

A call method by which a call control device connected to a location management device via a network executes:

• receiving a call setup request;
• searching a location data table for location information of a callee communication device in response to the call setup request;
• setting up, when the location information is searched out as a result of the search, a call on the basis of the location information;
• and
• notifying, when the location information is not searched out as the result of the search, the location management device of the call setup request,
• and by which the location management device executes:
• receiving notification of the call setup request from the call control device;
• referring to a storage unit stored with management information specifying which call control device controls the call targeted at each callee communication device;
• and
• notifying, of the call setup request, the call control device that controls the call to the callee communication device at which the call setup request is targeted on the basis of the management information referred to.

A call control device connected to a location management device via a network, comprising:

• a receiving unit receiving a call setup request;
• a search unit searching a location data table for location information of a callee communication device in response to the call setup request received by the receiving unit;
• a call control unit setting up, when the location information is searched out as a result of the search, a call on the basis of the location information;
• and
• a notifying unit notifying, when the location information is not searched out as the result of the search, the location management device of the call setup request.

A call method by which a call control device connected to a location management device via a network executes:

• receiving a call setup request;
• searching a location data table for location information of a callee communication device in response to the call setup request;
• setting up, when the location information is searched out as a result of the search, a call on the basis of the location information;
• and
• notifying, when the location information is not searched out as the result of the search, the location management device of the call setup request.

A recording medium recorded with a program for making a call control device connected to a location management device via a network actualize functions of:

• receiving a call setup request;
• searching a location data table for location information of a callee communication device in response to the call setup request;
• setting up, when the location information is searched out as a result of the search, a call on the basis of the location information;
• and
• notifying, when the location information is not searched out as the result of the search, the location management device of the call setup request.

A location management device connected to a call control device via a network, comprising:

• a storage unit stored with management information specifying which call control device controls the call targeted at each callee communication device;
• a call receiving unit receiving notification of the call setup request from the call control device;
• and
• a notifying unit referring to the storage unit and notifying, of the call setup request, the call control device that controls the call to the callee communication device at which the call setup request is targeted.

A call method by which a location management device connected to a call control device via a network, executes:

• receiving notification of a call setup request from the call control device;
• referring to a storage unit stored with management information specifying which call control device controls the call targeted at each callee communication device;
• and
• notifying, of the call setup request, the call control device that controls the call to the callee communication device at which the call setup request is targeted on the basis of the management information referred to.

A recording medium recorded with a program for making a location management device connected to a call control device via a network, actualize functions of:

• receiving notification of a call setup request from the call control device;
• referring to a storage unit stored with management information specifying which call control device controls the call targeted at each callee communication device;
• and
• notifying, of the call setup request, the call control device that controls the call to the callee communication device at which the call setup request is targeted on the basis of the management information referred to.