VoIP routers connect the 2 networks for communication. Routers and gateways are different things, but many people think of them as same thing. The gateway coverts the analog signals to IP signals and the router gets the signals to their destination. VoIP router is the most important device in a VoIP system.
How it Works
The data (sound) is transmitted in the form of packets over the internet. So when these packets leave the VoIP phone, the router gets them and makes sure they are sent to the destination. At the destination these packets are reassembled into the audio format.
What to Look For
You must know your needs. There are many available with many different features. Are you looking for a business solution or for personal use? Call centers have larger needs. Some companies use it for recreational purposes. There are features of VoIP router like multiple phone jacks, remote office compatibility, encryption technology, firewall and much more. You can also ask your provider, which router will fit your needs. Make sure you compare the price before you purchase one.