out-of-band


Also found in: Acronyms, Wikipedia.

out-of-band

(communications)
The exchange of call control information on a dedicated channel, separate from that used by the telephone call or data transmission.

out-of-band

(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.

out-of-band

(3)
In personal communication, using methods other than electronic mail, such as telephone or snail-mail.

out-of-band

(software)
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.

out-of-band

(1) Separate from the primary frequency or system. See signaling in/out-of-band and out-of-band data.

(2) Not at the regular time. See out-of-band patch.
References in periodicals archive ?
Out-of-band (OOB) Authentication refers to an authentication process that utilizes communications channel and one of the potential types of two-factor authentication among enterprises that call for high security.
To communicate between control and data planes, there are two alternatives, namely in-band control network and out-of-band control network.
Out-of-band D2D can be easily implemented with network assistance option; hence cellular operators are able to control out-of-band sessions.
"Out-of-band management is at the heart of IT resilience, and we continue to focus on our SMART OOB solution by developing increased access, monitoring, management, control, and decision-making," said Rick Stevenson, CEO, Opengear.
The filter has the advantage of compact size and sharp rejection skirt with good performance in-band and out-of-band in UWB specification as confirmed in experimental.
The benefits of the proposed circuit are that the impedances at two different receiving frequencies can be matched, and the out-of-band nonlinear components can be blocked.
All these features make BGA825L6S an excellent choice for GNSS LNA as it improves sensitivity, provides greater immunity against out-of-band jammer signals, and reduces filtering requirements, which lowers the overall cost of the GNSS receiver.
Microsoft may have committed to patching the IE vulnerability, but it has not said whether it will ship an "out-of-band" update, or one outside the regular monthly schedule known as Patch Tuesday.
The low noise design includes built-in IEPE amplifiers to minimise out-of-band signal influence and includes shielded electronics.
The platform is based on Oversi's unique out-of-band architecture allowing hierarchical deployment for the highest OTT cache performance, offering maximum flexibility and efficiency.
Having recently used the document management and signing process developed by DocuSign and secured with Two Factor out-of-band authentication from Authentify, Neumann no longer worries about who is picking up his proposals sent online.
Avocent DSView 3 management software enables secure, out-of-band, centralized management of all connected IT and network devices in complex and geographically dispersed data centers.