Cisco ASA 5510 8.2 Phone Proxy

We have a Cisco ASA 5510. It was running 8.0, at which point a coder configure Cisco Phone Proxy to work. The setup worked fine. We then upgraded to IOS 8.2 at which point the phone proxy stopped working. I have tried to revert back to 8.0 and a previous configuration but the phone proxy still doesnt work. Require a coder to either fix current configuration or re-setup phone proxy.