fallback switch


Also found in: Acronyms.

fallback switch

[′fȯl‚bak ‚swich]
(communications)
A mechanical switch to transfer a communications path from a primary device to an identical standby device in the event of a primary device failure.
References in periodicals archive ?
An example of a normal/redundant fallback switch is used as the first example and a special switch that was designed with two remote ports and two power supply ports as the other.