http://www.w3.org/2009/03/widgets-pag/cfpa.html#call

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ATT telephone switches have been doing seamless online upgrades in the
field for a very long time. They needed to solve that problem to allow
updates to take place without taking down the phone switch, but those
switches are really just computers.

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Received on Monday, 22 June 2009 08:54:18 UTC