Introduction
STUN allows you to have you devices connected to our service if you are operating behind a firewall.Setting STUN can help to make your audio quality better, and help to eliminate jitter, packet loss, and other audio problems.
To Enable
In X-Lite to enable STUN go to Topology then set the server address to stun.ipcomms.net:3478 this should fix most common errors that were there. Setting STUN will help to optimize your call quality.