Patent ID: 7890101

Claim:
A call controlling apparatus that performs a call controlling processing on a call based on a control signal transmitted from a terminal in a mobile communication network, the call controlling apparatus comprising: a storing destination selecting unit that receives the control signal directed by a signal distributing device that directs a control signal to one of a plurality of call controlling apparatuses and forwards the control signal to one of the call controlling apparatuses that serves as a storing destination, which is specified for each subscriber in advance; and a session controlling unit that receives a control signal from one of the storing destination selecting unit and another storing destination selecting unit included in another call controlling apparatus and based on the control signal controls a session of the terminal, wherein the storing destination selecting unit forwards the control signal to the session controlling unit included in the call controlling apparatus, when no call controlling apparatus that serves as the storing destination is specified for a subscriber who has transmitted the control signal from the terminal, and the session controlling unit receives the control signal from the storing destination selecting unit, specifies the call controlling apparatus as the storing destination of the subscriber, and transmits address information of the call controlling apparatus to the terminal of the subscriber.