With products like the D-Link DPH-541 it’s very possible to wipe out those cell phone bills. D-Link’s Wi-Fi Phone is a standalone device that does not require a computer to use. All you need is an 802.11g or 802.11b wireless network with high-speed Internet access to make and receive calls. Use it at home, hotels, offices, airports, Internet cafes, school campuses, or just about anywhere there is a wireless connection available. In addition, with a growing number of Wi-Fi hotspots and metropolitan areas deploying low-cost or free high-speed wireless Internet connection, you have more places available to make and receive VoIP calls. This Wi-Fi Phone uses Session Initiation Protocol (SIP) and is ready to be used with an Internet (VoIP) phone service plan. For accessing secure wireless networks, the Wi-Fi Phone supports WEP, WPA, and WPA2 encryption. With features like echo cancellation, packet delay compensation, and lost packet recovery, you can expect the voice quality from the Wi-Fi phone to be similar to traditional phones calls.