WiFi phone

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A WiFi phone is a wireless telephone that looks similar to a mobile phone but places calls via a combination of voice over IP and WiFi rather than via a cellular network. Some WiFi phones use Skype or Vonage for their voice over IP service such as current Belkin and Netgear WiFi phones. Some others are not bound to any proprietary protocols such as the DLink DPH-540, Linksys WIP330, Zyxel P2000W, and the UTStarcom F3000. To compete with WiFi phones, several cellular carriers have created "Dual-mode phones", which can be easily switched between using a WiFi connection when one is available and a traditional cellular network connection when WiFi is not available.