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data channel

data channel in Technology
communications
A channel (on a BRI or PRI line) used to carry control information, to set up connections on the associated bearer channels. The name wasn't too bad back when users were sending voice (not data) over the bearer channels, but in 1997 it's quite a misnomer.
(1997-03-10)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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