Now that retailers are using so many high-tech applications at their stores, they face a growing challenge: figuring out a way to transfer all of the text, voice and video associated with those applications from their stores to their headquarters, and back. For that they need a retail-hardened WAN (wide area network -- see box on Page 54 for terminology used in this article), which covers a large geographic area. "It is a must-have for enabling a whole bunch of strategies across the ...

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