| 摘要 |
PROBLEM TO BE SOLVED: To easily and surely restrict the arrival of an incoming call to a mobile phone even when a closed space restricting the use of the mobile phone is extended. SOLUTION: An RFID reader 4 is placed at an entrance/exit of a closed space 4 where the arrival of an incoming call to the mobile phone or the like is restricted to configure a gate area 3 in which mobile phone number information is read from an RFID tag attached to mobile terminals 2b, 2d. A host computer 6 recognizes a mobile terminal 2c in the closed space 4 and provides an announcement denoting that the speech in this area is basically not available in response to the arrival of the incoming call from other mobile terminal 7 or the like. When a specific key is operated, call information is delivered to a wireless base station 1 under the control so as to attain a usual speech for an emergency contact.
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