| 释义 |
out-of-band
out-of-band (communications)The exchange of call control informationon a dedicated channel, separate from that used by thetelephone call or data transmission.out-of-band (2)Sometimes used to describe what communications people call"shift characters", such as the ESC that leads controlsequences for many terminals, or the level shift indicators inthe old 5-bit Baudot codes.out-of-band (3)In personal communication, using methods other thanelectronic mail, such as telephone or snail-mail.out-of-band (software)Values returned by a function that are not inits "natural" range of return values, but rather signal somekind of exception. Many C functions that normally returna non-negative integer return -1 to indicate failure.
This use confuses "out-of-band" with "out-of-range". It isactually a clear example of in-band signalling since it usesthe 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.AcronymsSeeout of band |