In a portable communication terminal 10 which is capable of communicating with an information terminal 20 between different kinds of networks, the portable communication terminal 10 includes a plurality of radio communication sections 11, 21 which carry out data communications, respectively in respective service areas of the different kinds of networks, data communication control sections 12, 22 which control the data communications of a plurality of radio communication sections 11, 21 by their own first control commands of respective radio communication sections 11, 21, and a command conversion section 13 which carries out conversion of the first control commands used by the data communication control sections 12, 22 and a second control command used for a communication with the information terminal 20.