I’m having a weird issue. I have a customer who has a no audio issue, but only after they’ve parked the call and pick it back up. Audio works at all other points. This is a remote user and is connected back to the PBX via OVPN so it seems like it shouldn’t be a firewall issue.
I found the issue. I had to enable a couple of codecs in the extensions. After doing that I now have two-way audio after picking a call up from a park.