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Detecting Telephone Signals

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lidestructive

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Hi, is there anyone here who knows how to detect ringback, answer, and busy signals? I am doing an autodialer project using MT8889 and am finished with the tone dialing sequence.
 

serggi

New Member
I need this infotmation too

Hi, I'm also working on a project related whit phones and I need to know how the thelephone detects dial tone, busy line tone and hungup. If you find some information could you let me know please.
Tank you
 

sedaya

New Member
hi there... actually i face a problem of detecting phone sgnal, but from mobile phone. can u help me?? do you have any circuit???
 
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