Patent ID: 7107064

Claim:
A mobile communication terminal device for communication with a communication network comprising: radio communication means for communicating by radio with the communication network; a position data memory for storing position data indicating a current position; input means for a user to enter instructions; determination means for deciding an urgency level of a position search request received by the radio communication means from the communication network; control means for sending the position data to a station making the position search request without an approval instruction from the input means when the determination means determines the urgency is high and sending the position data to the station in response to the approval instruction from the input means when the determination means determines the urgency level is low; a telephone book memory for storing preset telephone numbers of other stations and priority level information related to the preset telephone numbers; and requesting station determination means for determining whether telephone number of the requesting station determined to have a low urgency level is contained in the telephone book memory, wherein the control means sends the position data to the requesting station, when determined by the determination means that the telephone book memory does not contain the telephone number but the user enters an approval instruction by the input means.