The D-Link Wi-Fi Phone (DPH-540) allows you to make and receive VoIP calls through an 802.11g or 802.11b wireless network with a high-speed Internet connection. The Wi-Fi Phone is a standalone device that does not require a computer and can be used from virtually anywhere in the world. Talk on the Wi-Fi Phone at work, home, coffee shops, airports, school campuses, and popular metropolitan areas where a wireless high-speed Internet connection is available. By utilizing the Wi-Fi Phone with a VoIP service plan, both home and business users have the potential to dramatically reduce local and long distance telephone charges compared to a standard telephone service.