Patent ID: 8825039
Filing Date: 2014-09-02
Classification: H04M

Abstract:
1. A mobile telephone device comprising: a storage part that stores carrier information of each call destination, the carrier information being obtained before a call is made to a call destination and representing a communication line provided for the call destination; a determination part that reads out the carrier information, which corresponds to the call destination, from the storage part, compares the carrier information read out from the storage part with carrier information, which is notified from the call destination in the call and which represents the communication line provided for the call destination, and determines in the call whether the carrier information, which is notified from the call destination, is different from the carrier information read out from the storage part; a notification part that notifies that the carrier information is different when the determination part determines that the carrier information notified from the call destination is different from the carrier information read out from the storage part; and a storing control part that updates the carrier information stored in the storage part to be the carrier information notified from the call destination when the carrier information notified from the call destination is different from the carrier information read out from the storage part.