Telephone exchange

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The Building That Moved: How Did They Move an 11,000-Ton Telephone Exchange Without Suspending Its Operations? | ArchDaily Abandoned Power Station, Telephone Exchange, Reserve Bank Of India Building, Kurt Vonnegut, Still Working, Historical Society, Culture Art, Art World, Indiana

Image 3 of 5 from gallery of The Building That Moved: How Did They Move an 11,000-Ton Telephone Exchange Without Suspending Its Operations?. via Bass Photo Co Collection, Indiana Historical Society

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A crossbar switch (aka X-bar) is an assembly of individual switches with a set of inputs contacts and a set of outputs contacts. The switches are arranged in a matrix.  The system design was used in AT&T's 1XB crossbar Central Office (C.O.) exchanges, which entered service about 1938.  These crossbar systems were developed by Bell Telephone Labs, and were inspired by Swedish design. Telephone Exchange, Smart Auto, Vintage Telephone, Old Phone, Vintage Life, Telephones, Old Tv, Science And Technology, Old School

A crossbar switch (aka X-bar) is an assembly of individual switches with a set of inputs contacts and a set of outputs contacts. The switches are arranged in a matrix. The system design was used in AT&T's 1XB crossbar Central Office (C.O.) exchanges, which entered service about 1938. These crossbar systems were developed by Bell Telephone Labs, and were inspired by Swedish design.

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