Abstract: A call processing server 10 includes a registration unit 12 that receives a registration request of a suspicious call number from a user receiving a suspicious call to register the suspicious call number in a subscriber information storage unit 22, and a call processing unit 11 that refers to the subscriber information storage unit 22 to control an incoming call, in which the call processing unit 11 transmits, when an outgoing source of a call is the suspicious call number registered in the subscriber information storage unit 22, an alert guidance to an incoming destination terminal 5 before connecting the call, and the suspicious call number registered in the subscriber information storage unit 22 is shared by all users set in the subscriber information storage unit 22.

Abstract: A call processing server 10 includes a registration unit 12 that receives a registration request of a suspicious call number from a user receiving a suspicious call to register the suspicious call number in a subscriber information storage unit 22, and a call processing unit 11 that refers to the subscriber information storage unit 22 to control an incoming call, in which the call processing unit 11 transmits, when an outgoing source of a call is the suspicious call number registered in the subscriber information storage unit 22, an alert guidance to an incoming destination terminal 5 before connecting the call, and the suspicious call number registered in the subscriber information storage unit 22 is shared by all users set in the subscriber information storage unit 22.

Abstract: In a case where there are a plurality of query destination servers, the number of queries to determine a connection destination network is reduced and the load in call processing is reduced. The call processing server 1 includes a destination resolution storage unit 13 that stores a telephone number and a query order of a query made to at least one server until a connection destination network for the telephone number is acquired; and a call processing unit 11 that acquires a query order corresponding to a telephone number of an incoming-call destination specified in a call request from the destination resolution storage unit, makes a query to a server set at the end of the acquired query order to acquire a connection destination network for the telephone number of the incoming-call destination, and transmits the call request to the connection destination network.

Abstract: In a case where there are a plurality of query destination servers, the number of queries to determine a connection destination network is reduced and the load in call processing is reduced. The call processing server 1 includes a destination resolution storage unit 13 that stores a telephone number and a query order of a query made to at least one server until a connection destination network for the telephone number is acquired; and a call processing unit 11 that acquires a query order corresponding to a telephone number of an incoming-call destination specified in a call request from the destination resolution storage unit, makes a query to a server set at the end of the acquired query order to acquire a connection destination network for the telephone number of the incoming-call destination, and transmits the call request to the connection destination network.