need help in....mobile phone based voice interactive system.

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drbizzarow

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hi 2 all
im currently working on voice interactive system ..........
im using cell phne at reciving end. can any body tell me how do i detect which key pressed from the dialing end ?
do i use AT cmmands or DTMF tone decoder ic ???
thx.
 

you need dtmf decoder IC 8870... you can make auto answering of phone.. also you can store preprogrammed voice in your controller using Roman Black's BTc Algorithm.

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www.8051projects.net
 

thx for your help .... same idea is running on my mind.
i m here for diffremnt sujestions ...... to findout best way thx again.
if any body hav another idea pls share thxin adv.
 

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