pdf BTMC ITT Pentanconta 1000 Popular

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BTMC_ITT_Pentanconta_1000.pdf

BTMC ITT Pentanconta 1000

40 page booklet about the Pentaconta Local Telephone Switching System (Pentaconta 1000 crossbar switch)

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Read the articles under "Introduction" in the black menu bar above.

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Thanks for new documents from Ed Palazzo, Bruce Patterson, Jon Kolger, Paul Ivester, Len Hicken, Paul Fassbender, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Mark Cuccia, Alan David, Harry Joseph, Charlie Terry, Karl Brose, Dennis Hock, Tim Griffin, Remco Enthoven, and Steve Cichorsky.

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