Patent ID: 8195138
Filing Date: 2012-06-05
Classification: H04W

Abstract:
1. A communication control system comprising: a first mobile communication switching device that controls the communication of a calling-side mobile communication terminal; a second mobile communication switching device that controls the communication of a called-side mobile communication terminal; and a subscriber information management device that manages location registration information of both the mobile communication terminals, wherein routing information is acquired and a calling signal is transmitted to the called-side mobile communication terminal before a communication line between the calling-side mobile communication terminal and the called-side mobile communication terminal is set, wherein the first mobile communication switching device includes, call request signal receiving means that receives, from the calling-side mobile communication terminal, a call request signal including calling/called number specifying information that specifies a calling number of the calling-side mobile communication terminal and a called number of the called-side mobile communication terminal, and call information that includes at least one of calling number information specifying the calling-side mobile communication terminal and call type information representing a type of a call from the calling-side mobile communication terminal, and acquisition request signal transmitting means that extracts the calling/called number specifying information and the call information from the call request signal received by the call request signal receiving means, generates an acquisition request signal of routing information, which includes the calling/called number specifying information and the call information, and transmits the acquisition request signal of the routing information to the subscriber information management device, wherein the subscriber information management device includes, acquisition request signal receiving means that receives the acquisition request signal of the routing information from the first mobile communication switching device, mobile communication switching device specifying means that extracts the calling/called number specifying information from the acquisition request signal of the routing information received by the acquisition request signal receiving means, and specifies the second mobile communication switching device controlling the communication of the called-side mobile communication terminal with reference to the location registration information of the called-side mobile communication terminal specified by the calling/called number specifying information, and issuance request signal transmitting means that extracts the calling/called number specifying information and the call information from the acquisition request signal of the routing information received by the acquisition request signal receiving means, generates an issuance request signal of a routing number, which includes the calling/called number specifying information and the call information, and transmits the issuance request signal of the routing number to the second mobile communication switching device specified by the mobile communication switching device specifying means, and wherein the second mobile communication switching device includes, issuance request signal receiving means that receives the issuance request signal of the routing number from the subscriber information management device, calling signal transmitting means that transmits the calling signal to the called-side mobile communication terminal based on the issuance request signal of the routing number received by the issuance request signal receiving means, call information notifying means that extracts the call information from the issuance request signal of the routing number received by the issuance request signal receiving means, and transmits the call information to the called-side mobile communication terminal when the calling signal transmitting means transmits the calling signal, and acquisition means that receives a response signal transmitted from the called-side mobile communication terminal in response to the transmission of the calling signal from the calling signal transmitting means and acquires the routing number.