| 摘要 |
A voice interruption, which occurs during handover between mobile communication networks that are different from each other, is notified to a speaker. A mobile communication terminal, which has a function to handover between mobile communication networks that are different from each other, has a notification unit that performs a notification operation to notify the speaker of a handover between mobile communication networks. The notification unit is kept operating for a predetermined time to cover at least an instantaneous break period of voice data, caused by a handover between mobile communication systems, either (1) when radio units are switched because communication methods are switched or (2) when the voice data methods are switched because communication methods are switched.
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