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cost control callback

cost control callback in Technology

communications
A system where a computer automatically rejects incoming dial-up calls from certain telephone numbers and calls them back, with the result that the caller pays nothing for the connection. This differs from security callback in that it applies to certain phone numbers instead of to certain user names.
(2003-07-13)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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