Automobile radio telephone apparatus capable of detecting a...

Details Automobile radio telephone apparatus capable of detecting a... Automobile radio telephone apparatus capable of detecting a...

H - Electricity

04

B

325/30

H04B 7/26 (2006.01) H04B 1/16 (2006.01) H04B 1/40 (2006.01) H04B 1/46 (2006.01) H04Q 7/32 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2034712

An automobile radio telephone apparatus capable of detecting a drop of power source voltage to prevent a telephone channel from being occupied wastefully and to thereby enhance efficient use of channels with regard to the operation of an automobile radio telephone system. When the power source voltage is lower than a predetermined voltage, the apparatus informs the user of such an occurrence. On the lapse of a predetermined period of time and if a conversation is under way, the apparatus warns the user that it will execute a forcible conversation ending procedure and then executes it.

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