A device that combines the data streams from many SImultaneously active inputs into one shared channel in such a way that the streams can be separated after transmisSIon. The concentrator' s output bandwidth must be at least as great as the total bandwidth of all SImultaneously active inputs. A concentrator is one kind of multiplexing device. For example, a concentrator may be used to connect 24 2400 bps TTYs to a host via a 57600 bps channel. (2000-03-01)