You are here: Home > Browse the Library > BC Switching Library > Western Electric > CDs, SDs and T-drawings

Check out the TCI YouTube channel here. Please subscribe!

Check here for the 2024 Telephone Shows

Folder CDs, SDs and T-drawings

CDs and SDs are currently located in several categories in the Library. Hint: search using the first five numeric digits of the document number.

Categories

Folder CD-81719-01 404 405 Dial Tone Generator

Folder CD-SD-1C297-01 Coin Station Test Line

CD-SD-1C297-01 Coin Station Test Line

Folder SD-CD-96471

Documents

pdf CD-96555-01 - Dial Long Line Ckt 10 20 pps Popular

By 416 downloads

Download (pdf, 894 KB)

CD-96555-01_Dial_Long_Line_Ckt_10_20_pps.pdf

CD-96555-01 - Dial Long Line Ckt 10 20 pps

Contributed by Paul Wills.

pdf ED 31810-01 Popular

By 428 downloads

Download (pdf, 124 KB)

ED-31810-01_tci.pdf

ED 31810-01

Contributed by John Novack.

pdf SD 31810-01 Popular

By 413 downloads

Download (pdf, 813 KB)

SD-31810-01_tci.pdf

SD 31810-01

Contributed by John Novack.

pdf SD 31922-01 i19D Sep58 - 355A and 356A Line Finder Control Ckt Popular

By 367 downloads

Download (pdf, 8.58 MB)

SD-31922-01_i19D_Sep58_355A_356A_Line_Finder_Control_Ckt_tci_ocr.pdf

SD 31922-01 i19D Sep58 - 355A and 356A Line Finder Control Ckt

SD-31922-01, No. 355A or 356A Line Finder Control Ckt. With or Without Mate Operation. Contributed by Steve Cichorsky.

pdf SD 95867-01 Popular

By 360 downloads

Download (pdf, 888 KB)

SD-95867-01_tci.pdf

SD 95867-01

pdf SD 99328-01 Popular

By 379 downloads

Download (pdf, 432 KB)

SD-99328-01_tci.pdf

SD 99328-01

pdf SD-1A102 Popular

By 316 downloads

Download (pdf, 1.28 MB)

SD-1A102.pdf

SD-1A102

Contributed by Paul Wills.

pdf SD-1A246 Popular

By 327 downloads

Download (pdf, 1.48 MB)

SD-1A246.pdf

SD-1A246

Contributed by Paul Wills.

pdf SD-31592-02 i14B Sep52 - Coin Box Trunk Circuit Popular

By 382 downloads

Download (pdf, 626 KB)

SD-31592-Training-Coin Trunk.pdf

SD-31592-02 i14B Sep52 - Coin Box Trunk Circuit

SD-31592-02, SD-31592-021. "For Training Purposes Only." Contributed by Paul Wills.

pdf SD-31606-01 Popular

By 475 downloads

Download (pdf, 1.18 MB)

SD_31606-01_tci.pdf

SD-31606-01

Prepared by John Novack including corrections by Steph Kerman.

pdf SD-31613-01 - SXS Fuse Alarm Circuit Popular

By 353 downloads

Download (pdf, 442 KB)

SD-31613-01_SXS_Fuse_Alarm_Circuit_tci.pdf

SD-31613-01 - SXS Fuse Alarm Circuit

Contributed by John Novack.

pdf SD-31978-01 - SXS Misc Alarm Circuit Popular

By 328 downloads

Download (pdf, 556 KB)

SD-31978-01_SXS_Misc_Alarm_Circuit_tci.pdf

SD-31978-01 - SXS Misc Alarm Circuit

Contributed by John Novack.

pdf SD-32128-01 - Connector Bank Multiple Popular

By 322 downloads

Download (pdf, 557 KB)

SD-32128-01_Connector_Bank_Multiple_tci.pdf

SD-32128-01 - Connector Bank Multiple

Contributed by John Novack.

pdf SD-32309-01 - OUTGOING lNTERCEPTING TRUNK Circuit Popular

By 301 downloads

Download (pdf, 847 KB)

SD-32309-01_OUTGOING_lNTERCEPTING_TRUNK_Circuit_tci.pdf

SD-32309-01 - OUTGOING lNTERCEPTING TRUNK Circuit

Contributed by John Novack.

pdf SD-32310-01 - Pulse Generator and Counting Circuit Popular

By 349 downloads

Download (pdf, 460 KB)

SD-32310-01_Pulse_Generator_and_Counting_Circuit_tci.pdf

SD-32310-01 - Pulse Generator and Counting Circuit

Contributed by John Novack.

pdf SD-32344-01 - Outgoing Coin Trunk Circuit Popular

By 302 downloads

Download (pdf, 2.07 MB)

SD-32344-01_Outgoing_Coin_Trunk_Circuit_tci.pdf

SD-32344-01 - Outgoing Coin Trunk Circuit

Contributed by John Novack.

pdf SD-35059-01 - Outgoing Trunk Circuit Popular

By 296 downloads

Download (pdf, 801 KB)

SD-35059-01_Outgoing_Trunk_Circuit_tci.pdf

SD-35059-01 - Outgoing Trunk Circuit

Contributed by John Novack.

pdf SD-3C292-01 - 660 Communications Panel Popular

By 342 downloads

Download (pdf, 2.48 MB)

SD-3C292-01.pdf

SD-3C292-01 - 660 Communications Panel

Contributed by Paul Wills.

pdf SD-56497-01 - Signaling Test Circuit Popular

By 319 downloads

Download (pdf, 937 KB)

SD-56497-01_Signaling_Test_Circuit_tci.pdf

SD-56497-01 - Signaling Test Circuit

Contributed by John Novack.

pdf SD-62831-01 NSN Popular

By 281 downloads

Download (pdf, 737 KB)

SD-62831-01-NSN.pdf

SD-62831-01 NSN

Contributed by Paul Wills.

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 1377 guests online