What is a STUN server?
A STUN server is used to help Voicent software to connect to your VoIP/SIP service if your computer is behind a router. Some VoIP services provide their own STUN server to use, others rely on public STUN servers. For public STUN servers, please google “public STUN servers”. The following are a few examples: stun.xten.com, stun01.sipphone.com, and stunserver.org.