T-Mobile rolls out voice over LTE, HD voice in Seattle | PCWorld: "T-Mobile USA has rolled out voice over LTE in its home base of Seattle, offering high-definition voice and promising benefits to subscribers from a technology that in time could save carriers a lot of money.
VoLTE carries voice calls over a phone’s LTE data connection instead of a 3G circuit-switched network. That may eventually mean carriers can operate just one network, but it could also allow them to offer a broader range of services, including video calling. With VoIP, video chat and other communications services readily available “over the top” from Internet companies, carriers want to get into the game with integrated offerings, called rich communications services...."
more info:
http://multimediacapsule.thomsonone.com/t-mobileusa/t-mobile-brings-voice-over-lte-to-seattle
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