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The system described herein provides specialized voice communication services used by the Federal Aviation Agency as an important tool in the complex operation of air traffic control. The design features significant advantages over older systems in the speed, convenience, and flexibility of establishing communications between air route traffic control center personnel and communicants at similar or allied terminations. Switching is accomplished by crossbar, common control equipment of the same general type used in telephone central offices.
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the (Volume:82 , Issue: 2 )
Date of Publication: May 1963