You are here: Home > Browse the Library > BSPs (Bell System) > All BSP Categories > BSP Categories by later Division Number (by Doc #) > 200 - 289 Divisions - Switching Systems > 220 Division - Crossbar Tandem Offices

Check out the TCI YouTube channel here. Please subscribe!

Check here for the 2024 Telephone Shows

Folder 220 Division - Crossbar Tandem Offices

Documents

Toggle Title Date Download
pdf 220-121-301PT X1 IB (678 downloads) Popular Download (pdf, 26 KB)
pdf 220-121-900PT IA (637 downloads) Popular Download (pdf, 249 KB)
pdf 220-409-501PT X1 IA (615 downloads) Popular Download (pdf, 222 KB)
pdf 220-409-501PT X2 IA (606 downloads) Popular Download (pdf, 184 KB)
pdf 220-450-501PT X1 IA (628 downloads) Popular Download (pdf, 110 KB)
pdf 220-500-900PT IB (709 downloads) Popular Download (pdf, 282 KB)
pdf 220-500-901PT IA (597 downloads) Popular Download (pdf, 179 KB)
pdf 220-501-501PT Add IB (637 downloads) Popular Download (pdf, 42 KB)
pdf 220-501-503PT Add IB (654 downloads) Popular Download (pdf, 35 KB)
pdf 220-532-301PT IA (645 downloads) Popular Download (pdf, 137 KB)
pdf 220-535-303PT Add IB (648 downloads) Popular Download (pdf, 29 KB)
pdf 220-600-900PT Add IA (617 downloads) Popular Download (pdf, 21 KB)
pdf 220-600-900PT IA (609 downloads) Popular Download (pdf, 234 KB)

New User?

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

Recent Contributors

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.

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

Who's online

We have 741 guests online