out-of-band
English
Adjective
out-of-band
- (telecommunications) Relating to activity outside of a defined telecommunications frequency band.
- 2001, Regis J. Bates and Donald W. Gregory, Voice and Data Communications Handbook, page 841:
- In this additional spectrum, in-band signaling was sent down the wires outside the frequencies used for conversation. Actually, the signals were sent across the 3,500- and 3,700-Hz frequencies. Although these worked and were not in the talk path (out of the band) they were limited in the number of tones that could be sent.
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- (telecommunications, by extension) Relating to communication on a different channel, or by a different method, from that of the primary communication channel.
- (computer security) Relating to communication, such as identity verification, via a method other than the primary means of accessing the software.
- 2007, Simon Willison, Google Tech Talks: The Implications of OpenID, archived from the original on 13 May 2008:
- One great way of solving the phishing problem is doing out-of-band authentication.
- 2020, Vitalik Buterin, “A Philosophy of Blockchain Validation”, in vitalik.ca:
- Defaulting to chaos still causes a lot of disruption, and would require out-of-band social coordination to resolve, but it places a much larger barrier in front of the attacker, and makes attackers much less confident that they will be able to get away with a clean victory, making them much less motivated to even try to start an attack.
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- (programming) Referring to a value returned by a function that is not in its natural range of return values, but rather signals an exception.
Antonyms
- inband
Derived terms
- out-of-band signaling
Translations
telecommunications: outside of a defined telecommunications frequency band
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telecommunications: on a different channel, or by a different method
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computer security: via a method other than the primary means of accessing the software
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