No Sound For External Calls

Hello, I am having issues with my FreePBX install not being able to hear any sound when connecting to an outside number. I assume this is an RTP related issue but am not sure how to resolve it.

FreePBX is installed on a VMWare image with the image being bridged to the network using static IP of My router forwards UDP ports 5060, 10001-20000 to this IP.

When I run “asterisk -r” from command line and then make a call into the phone system from outside, it indicates that it plays the IVR greeting message successfully and waits for a response. Pressing any number on the calling phone has no effect, and the log shows it playing it’s timeout response and then hangs up after playing the timeout message 3 times.

Any help would be appreciated!