I have spent the past three months, without success, looking for this solution. Does it exists as I can only find ones using Asterix pbx for self termination.
I wish to start my own sip server and billing which uses other sip provider voip. Certain calls destinations would be routed through certain sip providers. These could be changed online. I have good knowledge but I am no expert so I reasonably easy solution would be preferable. Also self hosting rather than hosted would be better. Thanks