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Number Five Crossbar Switch

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Revision as of 10:58, 21 February 2025 by Sarah (talk | contribs) (Created page with "The '''No. 5 Crossbar (5XB)''' telephone switch is a type of telephone switch that was engineered by Bell Labs, built by Western Electric, and first installed in Media, PA in 1948.")
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The No. 5 Crossbar (5XB) telephone switch is a type of telephone switch that was engineered by Bell Labs, built by Western Electric, and first installed in Media, PA in 1948.

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