djc
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Hi,
I have one hardware in which a mic and mp3 module is attached using ATMEGA8 and TDA2822 amplifier IC. Prerecorded messages plays continuously but for the announcement through the mic a push button attached with controller has to be pressed so that recorded messages will stop and announcement through the mic will be done. Now I have to interface this circuit with remote telephone.Telephone will have a highest priority. So message through the telephone will be played first. So how to incorporate this telephone detection circuit.
I have one hardware in which a mic and mp3 module is attached using ATMEGA8 and TDA2822 amplifier IC. Prerecorded messages plays continuously but for the announcement through the mic a push button attached with controller has to be pressed so that recorded messages will stop and announcement through the mic will be done. Now I have to interface this circuit with remote telephone.Telephone will have a highest priority. So message through the telephone will be played first. So how to incorporate this telephone detection circuit.