I have a client that needs to reliably detect if their outbound calls are answered by a human or voicemail system, so that they can take different actions based on that determination.

I looked at the AVMD module documentation at https://freeswitch.org/confluence/display/FREESWITCH/mod_avmd , and it seems to indicate that this simply detects a beep, i.e. it does not use talking / silence heuristics into account to determine if the call is answered by a human or machine.  

Am I correct about that?  How is this intended to be used, do I assume that the call is answered by a human until this module sends a avmd%3A%3Abeep event to me?  How do others use this module or other techniques to determine human / machine answer to outbound calls with Freeswitch? 

Thanks!

Bob

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