We're trying to get a Cisco Softphone (IP Communicator v7.03) to work across an ASA using the Phone Proxy. The softphone usually registers correctly with the ASA Proxy and hence the callmanager, but when we go to make a call from the proxy phone to a phone on the inside it rings but we have no audio. However, we can make calls from phone to phone on the proxy side of the ASA. A 7961 proxy phone has no problems making calls and talking across the ASA.
The Call Manager is running 7.1(2) and is in nonsecure mode.
Any help would be greatly appreciated.