In order to simplify the operation during a call, a communication terminal includes: a radio circuit and a wireless LAN circuit; a flash ROM storing user identification information for identifying a target to communicate and telephone book data in which the user identification information and multiple pieces of access information respectively corresponding to the radio circuit and the wireless LAN circuit are associated with each other; and a control portion to search the telephone book data, if the wireless LAN circuit becomes incommunicable with the other party's mobile phone during communication, to extract a mobile phone number which is related with the user identification information of the user of the other party's mobile phone and corresponds to the radio circuit, and to originate a call to the other party's mobile phone by the radio circuit using the extracted mobile phone number.