Telephone switching device, telephone terminal, telephone switching system, control method and control program

A telephone switching device comprising:

• a storage unit configured to store a registration table registering a plurality of personal telephone numbers for each telephone terminal;
• an acquisition unit configured to acquire authentication results of a plurality of users with respect to the telephone terminal;
• a registration unit configured to associate the telephone terminal and personal telephone numbers of the plurality of successfully authenticated users with each other and register the telephone terminal and the personal telephone numbers in the registration table, according to the acquired authentication results;
• and
• a control unit configured to control outgoing/incoming calls using a personal telephone number of the user in the telephone terminal, based on the registered registration table,
• wherein when an incoming call to the personal telephone number in the registration table is received, the control unit transmits an incoming call reception request to the telephone terminal associated with the personal telephone number registered in the registration table and connects the incoming call to the telephone terminal by receiving an answer including the personal telephone number identified according to an authentication result of a user performing an answer operation to the telephone terminal from the telephone terminal.

A telephone terminal comprising:

• an authentication unit configured to make an authentication request, based on input authentication information of a user;
• an acquisition unit configured to acquire an authentication result for the authentication request and a personal telephone number of the user;
• a setting unit configured to set an incoming call output operation for each of a plurality of personal telephone numbers including the acquired personal telephone number;
• an output unit configured to perform an incoming call output operation according to an incoming personal telephone number, based on the set incoming call output operation;
• and
• a control unit configured to transmit an answer including the personal telephone number identified according to an authentication result of a user performing an answer operation to the incoming call output operation.

A method for controlling a telephone switching device, comprising:

• acquiring authentication results of a plurality of users with respect to the telephone terminal;
• associating the telephone terminal and personal telephone numbers of the plurality of successfully authenticated users with each other and registering the telephone terminal and the personal telephone numbers in the registration table, according to the acquired authentication results;
• and
• when an incoming call to the personal telephone number in the registration table is received, transmitting an incoming call reception request to the telephone terminal associated with the personal telephone number registered in the registration table and connecting the incoming call to the telephone terminal by receiving an answer including the personal telephone number identified according to an authentication result of a user performing an answer operation to the telephone terminal from the telephone terminal.

A method for controlling a telephone terminal, comprising:

• making an authentication request, based on input authentication information of a user;
• acquiring an authentication result for the authentication request and a personal telephone number of the user;
• setting an incoming call output operation for each of a plurality of personal telephone numbers including the acquired personal telephone number;
• performing an incoming call output operation according to an incoming personal telephone number, based on the set incoming call output operation;
• and
• transmitting an answer including the personal telephone number identified according to an authentication result of a user performing an answer operation to the incoming call output operation.