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out-of-band

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Computing Dictionary

out-of-band definition

1. The exchange of call control information on a dedicated channel, separate from that used by the telephone call or data transmission.
2. Sometimes used to describe what communications people call "shift characters", such as the ESC that leads control sequences for many terminals, or the level shift indicators in the old 5-bit Baudot codes.
3. In personal communication, using methods other than electronic mail, such as telephone or snail-mail.
4. Values returned by a function that are not in its "natural" range of return values, but rather signal some kind of exception. Many C functions that normally return a non-negative integer return -1 to indicate failure.
This use confuses "out-of-band" with "out-of-range". It is actually a clear example of in-band signalling since it uses the same "channel" for control and data.
Compare hidden flag, green bytes, fence.
[Jargon File]
(2001-04-08)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Out-of-band is always a great word to know.

So is ninnyhammer. Does it mean:

a fool or simpleton; ninny.

the offspring of a zebra and a donkey.

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"One would like to know more of that race, now extinct, whose seines lie rotting in the garrets of their children, who openly professed the trade of fishermen, and even fed their townsmen creditably, not skulking through the meadows to a rainy afternoon sport. Dim visions we still get of miraculous draughts of fishes, and heaps uncountable by the riverside, from the tales of our seniors sent on horseback in their childhood from the neighboring towns, perched on saddle-bags, with instructions to get the one bag filled with shad, the other with alewives. At least one memento of those days may still exist in the memory of this generation, in the familiar appellation of a celebrated train-band of this town, whose untrained ancestors stood creditably at Concord North Bridge. Their captain, a man of piscatory tastes, having duly warned his company to turn out on a certain day, they, like obedient soldiers, appeared promptly on parade at the appointed time, but, unfortunately, they went undrilled, except in the manvres of a soldier's wit and unlicensed jesting, that May day; for their captain, forgetting his own appointment, and warned only by the favorable aspect of the heavens, as he had often done before, went a-fishing that afternoon, and his company thenceforth was known to old and young, grave and gay, as "The Shad.""

-Henry David Thoreau

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