Light Reading points out that Earthlink is testing a Wi-Fi phone service in conjunction with Accton Technology Corporation. The phone will work primarily over their municipal Wi-Fi networks, and the first incarnation is being beta tested over their deployment in Anaheim, California. "We expect that many people who use cell phones today in our municipal Wi-Fi markets will want to switch to a Wi-Fi phone to take advantage of the significant cost savings," says an Earthlink exec. Not if they want their mobile phone to work in more than a handful of Earthlink Wi-Fi cities, they won't.