I have an incrediblepbx 2027-u server on crowncloud. I have setup the openvpn server on the pbx server and everything is working with the clearlyip phones. However I need to make an older Polycom vvx d230 DECT work so I am using a glinet router with the openvpn client on it. It will connect and I can receive and make calls but neither one has incoming audio. When I put a normal pc behind the glinet it has no internet. What am I missing?