| 摘要 |
PROBLEM TO BE SOLVED: To provide a position recording system that records a history of a radio zone wherein mobile station equipment has traveled. SOLUTION: This system is provided with radio base station equipment 2 and mobile station devices 3 that are resident in a plurality of respective divisions in a premise, a private branch of exchange 1 that sends position information of the respective mobile station devices 3 for every updating of in-zone management and a computer 5 that stores the position information sent from the private branch of exchange 1. The position information includes the mobile unit number of the mobile station device 3 and the zone number, and the computer 5 stores the mobile unit number and the zone number and the time when the position information is received.
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