T-Mobile launches unlimited WiFi calling for businesses

T-Mobile USA debuted a new unlimited voice-over-WiFi calling service for the enterprise segment, according to a T-Mobile spokeswoman. The plan offers unlimited calling via WiFi for $10 per month.

The carrier also said that businesses with more than 100 lines of voice and data can use Research In Motion's BlackBerry devices through T-Mobile to "receive free WiFi calling nationwide and from abroad to the U.S.," according to the carrier.

The plan uses dual-mode Unlicensed Mobile Access (UMA) technology and relies on T-Mobile WiFi hotspots. T-Mobile first introduced unlimited WiFi calling for consumers with the launch of its [email protected] service in 2007. The offering allows users to switch between WiFi and the carrier's cellular network. Sprint Nextel and Verizon Wireless have each subsequently launched similar services via their respective femtocell offerings.

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