| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile communication system access control method where a speech with a destination is not interrupted even in the case that the radio wave is deteriorated. SOLUTION: In the case that a subscriber A uses a mobile phone 9 to make a speech with a subscriber B utilizing a fixed phone 3, the subscriber A enters in advance a specific number to perform registration of callback processing. When a radio wave of the portable telephone 9 is deteriorated, a call control station 5 releases the portable telephone 9 to hold a call with the fixed phone 3 and to start the callback processing of the portable telephone 9. When the radio wave of the portable telephone 9 is restored, the call control station 5 again connects the call between the portable telephone 9 and the fixed telephone 3.
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