What Does Out of Band Mean?
The phrase “out of band” in IT refers to activity that occurs outside of a specific telecommunications frequency band. This phrase is used in different ways to talk about different kinds of multichannel messaging or multichannel signaling.
Techopedia Explains Out of Band
In telecommunications, out-of-band signaling provides more sophisticated models for sending signals over the public switched telephone network or another network. IT professionals can also use the term “out of band” generally to talk about a message that is not included in a particular channel, for instance, where there may be an implicit understanding between two parties that is not deliberately broadcasted over a particular data transfer line.
