This is a method of providing a phone service to people over the Internet. This type of service moves the traditional phone switch off site and allows more than one company to use a particular switch.
DrayTek Vigor2930Vn new series routers have two separate WAN ports for connection to Internet service providers through Ethernet with load balancing on interfaces and redundant communication. This solution is often necessary for connection of any office to two different providers to organize a permanent access to the Internet.