While Wireless VoIP seems like a great thing for consumers, a war is heating up with the telco's to try and keep the technology from cutting into thier revenue stream. Telco's are pushing UMA, short for Unlicensed Mobile Access, a technology that allows phones to seamlessly go from the GSM network to Wifi and back, while still being able to charge the customer for the airtime. This hopefully will be convenient enough for consumers that they will avoid free services like Skype which have little to no fees.
Via [redherring.com]