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The Journal looks at Unlicensed Mobile Access and IMS worldwide: The article paints a very fair picture of the quality and cost of UMA, and why it’s typically being used today (for better indoor coverage). There’s a nice description of the evolution of cellular towards IMS (IP Multimedia Subsystem), and some notes about how people can make phone calls over Wi-Fi from some smartphones using third-party software, a potential challenge to both UMA and IMS’s voice side.
Interesting that BT acknowledges the cheapness of handling calls over Wi-Fi and broadband that the customer separately pays for: they offer four UMA minutes as the equivalent of one cell minute in their calling plans, which conforms to what I’ve been told about call completion costs (4 or 5 cents a minute for cell, 1 cent a minute for UMA/broadband).
Femotcells are mentioned briefly, but the Journal says their availability isn’t near-term.
Posted by Glennf at 12:41 PM | Comments (0) | TrackBack