NAT

Am I behind a Symmetric NAT?

WebRTC establishes peer-to-peer connections between web browsers. To do that, it uses a set of techniques known as Interactive Connectivity Establishment or ICE. ICE allows clients behind certain types of routers that perform Network Address Translation, or NAT,to establish direct connections. (See the WebRTC glossary entry for a good introduction.) One of the first problems is for … Read More ›

What is NAT Keepalive?

Sometimes your deskphone will seem to have inexplicable problems. Inbound calls won’t come through, or maybe calls go straight to voicemail. These issues can all happen due to a timed out connection between your VoIP phone and your local network. One way to fix this problem is by enabling and configuring a phone feature called NAT keepalive. … Read More ›