Clearwire Corporation today unveiled the next milestone in its efforts to redefine how people communicate and use the Internet. Beginning today, Clearwire's customers will be able to subscribe to a new service which will enable simple, affordable phone services over the Internet. Clearwire is the first widely deployed wireless broadband company to offer VoIP services in the United States. Stockton, Calif., is the first Clearwire market to offer the new service.

Clearwire Internet Phone Service works by sending calls over the Internet as packets of data, then converting those packets back into sound and putting the transmission back onto a traditional phone network at a switching facility.

Like Clearwire wireless high-speed Internet, Clearwire Internet Phone Service features simple, plug-and-play installation, requiring no special software or an installation appointment. It even works with a customer's existing phone. Alternatively, it can work over a customer's computer.

When signing up for service, customers purchase an Internet phone adapter box that is about the size of a desktop calendar. The box plugs into a power outlet and then easily connects to the customer's computer, Clearwire modem and existing phone. Once installation is complete and E911 availability is validated, the customer activates his or her account online at clearwire.com and can begin making calls.

Because the modem is portable, customers can move the service from place to place inside Clearwire's coverage area -- at home, the office, local restaurant or cafe. As long as there is a power source, secure Internet access is available in any Clearwire coverage area.