Encyclopedia

crossbar system

crossbar system

[′krȯs‚bär ‚sis·təm]
(communications)
Automatic telephone switching system which is generally characterized by the following features: selecting mechanisms are crossbar switches, common circuits select and test the switching paths and control the operation of the selecting mechanisms, and method of operations is one in which the switching information is received and stored by controlling mechanisms that determine the operations necessary in establishing a telephone connection.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
More than just a quiver, [18] (photo on page 50) TightSpot ($167.95) improved their popular design by adding a four-fastener crossbar system to provide better stability, and the crossbar section between the rods has also been beefed up without adding an ounce of weight.
Effective Range Realities: TIGHTEN YOUR GROUPS TO GAME-KILLING EFFICIENCY AT THE DISTANCES YOU EXPECT TO SHOOT
As stated in a Dow-Key matrix switch brochure, "A crossbar system can switch any input signal to any output port such that the path between the I/O ports is unique at any given time."
The many sides of switching matrices
Bell's Number Four ESS, developed in 1972, was designed primarily as a successor to electro-mechanical 4A crossbar systems. The 4 ESS was a high-capacity, versatile toll and tanden switching machine for the long-distance telecommunications network which could handle at least 350,000 long-distance calls per hour .
Electronic Switching Is 'In'
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