voip/sip command line - play audio

Project Description:
Hi,

we have a budget of 220USD and would like a linux expert to set up the sip client software of your choice which can fullfill the following requirement:
-run from command line / CLI
-use a config file for the voip/sip settings
-audio file as capture/input/microphone

The last requirement will be tricky: It is not a auto-responder for income calls, but we want to play an audio file for outgoing calls => we run the application
./app_of_your_choice --config-file settings.conf --call-number 0012345678 --audio-file2play sound.wav
When the person which is called (0012345678) answers the phone, the audio file will play.


We will provide you our sipgate account/login data for testing and doing the job. We accept escrow payment.

If You have an idea and can do this job, lets know.

Thanks