I need to have 2 servers. 1) FreePBX as a PBX and 2) A2billing for Billing system. I'll supply both servers. Just need the Configuration and interoperability with A2billing.
18 freelancers are bidding on average $195 for this job
I have developed many software using asterisk/freepbx and also customise voip based opensource software like a2billing. I have also installed and configure the asterisk, freepbx, a2billing.