A wireless processing section has modulation/demodulation circuits which
contain communication protocols used for a plurality of communication
systems. A communication control section performs an entering idle state
process according to a selected communication mode by a communication
processing selection section and executes an entering idle state process
by switching communication modes until an entering idle state process is
successful. Subsequently, when an entering idle state process is
successful, a maximum number of origination retry attempts is determined
corresponding to a required time interval until completion of that
entering idle state process. Specifically, the maximum number of
origination retry attempts is decreased to the extent that the time
interval until an entering idle state process completion becomes longer.
The communication control section performs retries fore only the
determined maximum number of origination retry count attempts when
connection failed in an origination process.