Patent ID: 7751539

Claim:
A telecommunication control system, in a telecommunication network having one, two or more telecommunication control systems to perform a call control between terminals and to enable telecommunication between a caller terminal and a receiver terminal by an intercommunication between a caller side telecommunication control system of the one for communicating with the caller terminal and a receiver side telecommunication control system of the one for communicating with the receiver terminal, comprising: a caller priority call category judgment unit to generate a first priority call category identifier by determining a priority call category based on first connection configuration information notified by the caller terminal; a priority call category identifier notification unit to notify the receiver side telecommunication control system of the first priority call category identifier; a requested call category judgment unit to judge a requested call category to be requested to the receiver terminal from a first priority call category identifier notified by the priority call category identifier notification unit; a requested call category notification unit to notify the receiver terminal of the requested call category; a receiver priority call category judgment unit to generate a second priority call category identifier by determining a priority call category based on second connection configuration information notified by the receiver terminal; a connection call category judgment unit to determine a connection call category based on the first priority call category identifier and second priority call category identifier; and a telecommunication establishment unit to make telecommunication between the caller terminal and receiver terminal established by a connection call category judged by the connection call category judgment unit.