| 摘要 |
PROBLEM TO BE SOLVED: To provide an enterprise wireless phone system where other wireless phone than those for specific people such as overtime workers and midnight workers cannot be available after the end of a usual work time. SOLUTION: The wireless phone system consists of a master set 2, a plurality of base stations 3 and a plurality of wireless phones 5. The master set 2 has a means that instructs forced revision of position registration to each base station, a means that inhibits new position registration after a lapse of the forced update time, a means that invalidating wireless phones within a new position registration inhibit time whose position registration is not updated within the forced update time and a means that releases inhibition of the new position registration. Each base station 3 has a means that informs a cell 4 about obligation of position registration when receiving an instruction of forced update and each wireless phone has a position registration means that registers its position when receiving the obligation of position registration.
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