There is a project made in core PHP, Call making from browser and call receiving part is already there and working.
We need an expert developer who can setup the Holding and recording functionality.
There should be an option of making the Call hold and uploading MP3. The uploaded MP3 should play in call while its on hold.
Also recording functionality is required.
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Hey I am interested to work on this project. I have major expertise with twilio api. I wont ask for payment until your satisfaction. Inbox me to start working.. Thank you waiting for positive response.