I want to play a Wav file by voice modem

I have got a voice modem.

What I 开发者_如何学Cwant is that the application will call a particular number and when the user picks up the call, a wav file should be played and after it the application will disconnect the call.

Can anyone direct me to the appropriate path.

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The Wikipedia article gives you most of what you need to know. The rest would be encoding the audio to a format the modem supports, and using +++ to go to command mode on the modem.