A2billing on Asterisk needs to be customized so DID and ANI triggered callback is set up. Only require the callback aspect of A2Billing to be customized.
Currently system runs ok with FreePBX and A2Billing.
6 freelance font une offre moyenne de $133 pour ce travail
Hi, I have done 100's of a2billing installations i can do this job for you. Let me know if interested. Thanks vivek