I have a FreePBX/Asterisk System working at Amazon. I can access it directly or via a VPN.
Normal telephony works as expected.
1) Trying to get WebRTC phone (via the UCP) working
2) Trying to integrate external WebRTC
Can you help debug?
I can help you to integrate with an external Webphone (using WebRTC), can offer you one I already have and is working and help you to configure the FreePBX to use that WebPhone.