Ok, the port 8088 was not open at the firewall and * had it listenning on localhost only.
http://community.freepbx.org/t/webrtc-phone-is-yellow/It works now, i mean, sort of, it doesn't get incoming calls. When i call directly the extension (99 + normal extension), it goes out to the SIP provider and not the webphone. It does outgoing calls tough. Any ideas please?