COMMUNICATION TERMINAL DEVICE AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a communication terminal capable of appropriately informing that a common carrier to which a communication partner subscribes is changed. SOLUTION: A center control portion 11 acquires information of a common carrier to which a partner telephone number belongs now and compares the acquired information with a common carrier information associated with the partner telephone number and memorized at an address book memory M2 and a call reception history memory M3 to distinguish whether a common carrier is changed. When the common carrier is changed, it reports the change. COPYRIGHT: (C)2008,JPO&INPIT