I need to detect and count dtmf during call and disconnect the call if dtmf count exceeds a certain number. I think the way to do this would involve using the FrameHook API (http://doxygen.asterisk.org/trunk/AstFrameHookAPI.html). The documentation gives an example code but I'm not sure how to implement it. Would I have to modify the asterisk source code or would it be a module, function, or app? Any information about FrameHook or writing Asterisk modules in general would be appreciated. I have experience programming in C++, C#, Java, _javascript_, and PHP but am new to asterisk. I bought the book "Asterisk: The Definitive Guide (4th Edition)" and have read about 75% of it and been able to set up an asterisk server able to make and receive calls. It is a great book but does not cover much about writing modules for asterisk.
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