You are here: Home > Browse the Library > BSPs (Bell System) > Most Popular > BSP Categories by later Division Number (by Doc #) > 500 - 529 Station Equipment > 512 Division - Automatic Dialers, Speakerphones...

Check out the TCI YouTube channel here. Please subscribe!

Check here for the 2024 Telephone Shows

Folder 512 Division - Automatic Dialers, Speakerphones...

Automatic Dialers, Station Keys, Key Equipment, Interphone Systems, Modular Units, and Speakerphone Systems

Documents

Toggle Title Date Download
pdf 512-720-405 I4 (1065 downloads) Popular Download (pdf, 320 KB)
pdf 512-720-406 I3 (982 downloads) Popular Download (pdf, 179 KB)
pdf 512-730-400 I4 Sep79 - 4A Speakerphone - Connections (1168 downloads) Popular Download (pdf, 441 KB)
pdf 512-730-450 I5 (1059 downloads) Popular Download (pdf, 412 KB)
pdf 512-730-455 I3 (1200 downloads) Popular Download (pdf, 333 KB)
pdf 512-740-405 I3 (1086 downloads) Popular Download (pdf, 353 KB)
pdf 512-740-470 I6 (1087 downloads) Popular Download (pdf, 167 KB)
pdf 512-740-471 I4 (1017 downloads) Popular Download (pdf, 167 KB)
pdf 512-740-480 I4 (1086 downloads) Popular Download (pdf, 241 KB)
pdf 512-740-481 I2 (1093 downloads) Popular Download (pdf, 167 KB)
pdf 512-750-100 I1-Telehelper Speakerphone System (1159 downloads) Popular Download (pdf, 5.73 MB)
pdf BSP 512-612-425 KEYSETS (836 downloads) Popular Download (pdf, 2.60 MB)

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 49 guests online