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.
In January 2012, the North American division of Panasonic, a market leader in phone systems for small businesses announced a new desktop SIP-phone KX-UT670 and thus expanded its line of SIP UT phone series. This newest offering is the first desktop SIP – phone made by Panasonic, with an open source operating system allowing you to deploy integration solutions for business communications.