You are here: Home > Browse the Library > BSPs (Bell System) > All BSP Categories > BSP Categories by later Division Number (by Doc #) > 530 - 559 Private Branch Exchanges > 536 Division - 500 Series PBX

Check out the TCI YouTube channel here. Please subscribe!

Check here for the Upcoming Telephone Shows

Folder 536 Division - 500 Series PBX

500 Series PBX

Documents

Toggle Title Date Download
pdf 536-070-230 I1 (844 downloads) Popular Download (pdf, 116 KB)
pdf 536-070-230 i1 Oct51 - 507A, 507B PBX - Tests and Inspections Tl (797 downloads) Popular Download (pdf, 116 KB)
pdf 536-070-511 I2 (950 downloads) Popular Download (pdf, 157 KB)
pdf 536-070-511 i2 Apr57 - 507A, 507B PBX - Circuit Tests Tl (837 downloads) Popular Download (pdf, 259 KB)
pdf 536-070-512 I1 (918 downloads) Popular Download (pdf, 158 KB)
pdf 536-070-512 i1 Dec65 - 507A, 507B PBX - In-service Tests Tl (831 downloads) Popular Download (pdf, 245 KB)
pdf 536-490-110 I1 (872 downloads) Popular Download (pdf, 267 KB)
pdf 536-490-200 I4 (880 downloads) Popular Download (pdf, 135 KB)
pdf 536-490-210 I4 (836 downloads) Popular Download (pdf, 663 KB)
pdf 536-490-210 i4 Nov56 - 551A 551B 552B PBX - Install (705 downloads) Popular Download (pdf, 520 KB)
pdf 536-490-230 I3 (839 downloads) Popular Download (pdf, 159 KB)
pdf 536-490-507 I3 Aug54 - 555, 556, 557 PBX Attendant Telephone and Dial Circuits (1105 downloads) Popular Download (pdf, 153 KB)
pdf 536-490-525 I3 (743 downloads) Popular Download (pdf, 210 KB)
pdf 536-490-600 I5 (922 downloads) Popular Download (pdf, 199 KB)
pdf 536-490-660 I3 (817 downloads) Popular Download (pdf, 159 KB)
pdf 536-490-665 I5 (871 downloads) Popular Download (pdf, 143 KB)
pdf 536-490-666 I2 (877 downloads) Popular Download (pdf, 140 KB)
pdf 536-490-667 I2 (739 downloads) Popular Download (pdf, 129 KB)
pdf 536-490-667 i2 Aug54 - Ringdown and Automatic Tie Trunk Circuits - Operation Test (523 downloads) Popular Download (pdf, 182 KB)
pdf 536-520-110 i1 Nov52 - 552B 552E PBX - General Description (547 downloads) Popular Download (pdf, 492 KB)

New User?

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

Recent Contributors

Thanks for new documents from Lou Maffei, Rick Thoensen. Paul Fassbender, Sheila Flory, Tom Hesson, Jim Hurtle, Ed Palazzo, Bruce Patterson, Remco Enthoven, Jon Kolger, Paul Ivester, Len Hicken, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, and Jeff Lamb.

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

Who's online

We have 311 guests online