crossbar switch

A crossbar switch is one of the principal architectures used to construct switches of many types. Originally the term was used literally, for a matrix switch controlled by a grid of crossing metal bars, and later was broadened to matrix switches in general. Crossbar switches are sometimes referred to as "cross-point switches," "crosspoint switches," or "matrix switches." The other principal switch architectures are that of a memory switch or a crossover switch.
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A switch that has a plurality of vertical paths, a plurality of horizontal paths, and electromagnetical means, i.e., relays, for interconnecting any one of the vertical paths to any one of the horizontal paths. (188 )