terminal 0040 fig6 is a flow chart showing the operation of the phs navigation terminal of this embodiment referring to fig6 a radio channel is connected by performing e g an off hook operation in step s 601 if a dial number is input in step s 602 the input dial number is stored in the internal memory 205 in step s 603 and speech communication processing is performed in step s 604 if the navigation key is depressed in step s 605 the dial number stored in step s 602 and information indicating that the dial number is that of a partner station when the phs terminal serves as a navigation terminal are transmitted to the radio base station in step s 606 if the radio base station determines that the dial number is that of the partner station when the phs terminal serves as a navigation terminal it transmits the dial number to the area information database 1 together with its own identification information upon reception of the dial number the area information database 1 detects a telephone or a radio base station corresponding to the received dial number and sends back navigation information of the route to a place where the dial number is present to be referred to as a target place hereinafter using area information from the radio base station that has transmitted the dial number to the telephone or the radio base station corresponding to the dial number the navigation information includes identification information of radio base stations present along the route upon reception of the navigation information the radio base station transmits the received navigation information to the phs navigation terminal 2 upon reception of the navigation information in step s 607 the phs navigation terminal 2 stores the received information in its.