Patent ID: 8200201

Claim:
A mobile phone apparatus which has a storing area for storing a call reception history and in which an IP telephone a communication is possible by using an IP (Internet Protocol) telephone function, comprising: a network data acquiring section configured to acquire data indicating a type of network to which said mobile phone apparatus belongs; an originator data acquiring section configured to acquire a call originator data at a time of a call reception; a relating section configured to relate the acquired data indicating the type of network and the acquired call originator data to register in said storing area; a determining section configured to determine whether a call originator is a public line network or an IP telephone; and a registering section configured to register the determination result in the call reception history, wherein when a call is originated based on the call reception history, a prefix number is added to the call originator data based on the call reception history and a current network data indicating a network to which said mobile phone apparatus belongs.