pdf 1975_Bell System Switching Timeline - History 1878-1975 Popular

1646 downloads

Download (pdf, 442 KB)

Bell System Switching Timeline-History.pdf

1975_Bell System Switching Timeline - History 1878-1975

Time Line of Bell System Switching from a Bell System Training Manual

New User?

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

Recent Contributors

Thanks for new documents from Jim Hurtle, Ed Palazzo, Paul Fassbender, Bruce Patterson, Remco Enthoven, Jon Kolger, Paul Ivester, Len Hicken, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Alan David, Dennis Hock, and Tim Griffin.

Please send a file to add your name to this list!

30 Latest Additions

Who's online

We have 775 guests online