Also known as a jackfield or patch bay, a patch panel is a panel that contains multiple cable connections. The back of the panel has wiring or other connective cabling that runs to disparate equipment. The front of the patch panel allows easy access to connect the different equipment through the use of short patch cables. One common example of this concept was before automatic telephone switching became widespread; early telephone operators would connect callers to their intended parties manually by plugging in a cable on the switchboard.
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