IN-VEHICLE HANDS-FREE PHONE SYSTEM, AND TONE SENDING-OUT METHOD

摘要

PROBLEM TO BE SOLVED: To reduce failures in the tone sending-out of number sequences including prescribed codes that differ in handling manners among cellular phone service providers.;SOLUTION: The in-vehicle hands-free phone system 2 is equipped with: an in-vehicle device 10A; and a cellular phone 20 connected by a cable or a radio to the in-vehicle device and connected to a base station 30 by the ratio. The in-vehicle device is equipped with: an information acquisition means 16 that acquires information of a network to which the cellular phone is connected at present and roaming information from the base station through the cellular phone; a storage means 13 that stores a number sequence including a prescribed code in the middle; and a tone sending-out control means 16 that transmits the number sequence stored in the storage means to the cellular phone and causes the cellular phone to send out a tone. The tone sending-out control means determines a tone sending-out behavior about a number sequence part that is subsequent to the prescribed code on the basis of the network information and the roaming information acquired by the information acquisition means.;COPYRIGHT: (C)2011,JPO&INPIT