Patent ID: 8019391

Claim:
An in-vehicle handsfree apparatus comprising: a handsfree connection section configured to establish a handsfree communication protocol connection with a cellular phone; a ring tone reception section configured to receive a ring tone registered in a cellular phone, with which the handsfree connection section establishes a handsfree communication protocol connection; a control section configured to (i) output by using a reception sound output section a reception sound which is received from a cellular phone, which is under telephone call and with which the handsfree connection section establishes a handsfree communication protocol connection, and (ii) output, when a cellular phone with which the handsfree connection section establishes a handsfree communication protocol connection receives an incoming call, a ring tone using a ring tone output section, the ring tone being received by the ring tone reception section from and registered in the cellular phone receiving the incoming call; and a ring tone generation section configured to generate a ring tone, the control section being further configured to (i) establish a handsfree communication protocol connection with a plurality of cellular phones including at least a first cellular phone and a second cellular phone simultaneously, and (ii) then output, in case that the second cellular phone receives an incoming call when the first cellular phone is under telephone call, (a) a reception sound, which is received from the first cellular phone under the telephone call, via the reception sound output section, and, simultaneously, (b) a ring tone, which is generated by the ring tone generation section, via the ring tone output section, without outputting a ring tone, which is received by the ring tone reception section from the second cellular phone and registered in the second cellular phone which is receiving the incoming call.