Folder 179 Division - Signaling & Ringing Circuits

Signaling Circuits ans Associated Ringer Circuits

Documents

pdf 179-000-000 I66 Popular

By 1055 downloads

Download (pdf, 194 KB)

179-000-000_I66.pdf

179-000-000 I66
Contributed by Sam Etler .

pdf 179-306-101 I1 Popular

By 984 downloads

Download (pdf, 995 KB)

179-306-101_I1.pdf

179-306-101 I1

Contributed by Russ Kirk.

pdf 179-306-101-h-se Popular

By 1209 downloads

Download (pdf, 5.06 MB)

179-306-101-h-se.pdf

179-306-101-h-se

Multichannel Tone Test Unit - SD-7C004-01 - Description,
Issue 1, Oct. 1975

"1.02 The MTTU has the capability of monitoring a maximum of 100 trunks
for the presence of unauthorized 2600-Hz tone signals."

pdf 179-306-101-se Popular

By 1131 downloads

Download (pdf, 995 KB)

179-306-101-se.pdf

179-306-101-se

Multichannel Tone Test Unit - SD-7C004-01 - Description,
Issue 1, Oct. 1975

"1.02 The MTTU has the capability of monitoring a maximum of 100 trunks
for the presence of unauthorized 2600-Hz tone signals."

pdf 179-399-901PT iA Jun71 - Wescom 457-FSA - FX Inband Signaling System - Circuit Desc Op Maint Popular

By 514 downloads

Download (pdf, 2.72 MB)

179-399-901PT_iA_Jun71_Wescom_457-FSA_FX_Inband_Signaling_System_Circ_Desc_Op_Maint_ocr_tci.pdf

179-399-901PT iA Jun71 - Wescom 457-FSA - FX Inband Signaling System - Circuit Desc Op Maint

Used in the WESCOM 45-type Station Terminating Assemblies. Contributed to the TCI Library by Steve Cichorsky. OCR by Jeff Lamb. Processed by Paul Fassbender.

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 1067 guests online