You are here: Home > Browse the Library > BSPs (Bell System) > by Division Number > Supplies > 975 Division - Signaling Systems

Check out the TCI YouTube channel here. Please subscribe!

Check here for the 2024 Telephone Shows

Folder 975 Division - Signaling Systems

Signaling Systems

Documents

pdf 975-000-000 I13 Popular

By 1072 downloads

Download (pdf, 31 KB)

975-000-000_I13.pdf

975-000-000 I13
Contributed by Sam Etler .

pdf 975-000-000-se Popular

By 1195 downloads

Download (pdf, 31 KB)

975-000-000-se.pdf

975-000-000-se

Numerical Index - Division 975 - Signaling Systems - General
Descriptive Information, Issue 13, 1980-10-01, 1 page

pdf 975-110-100 i2 Jan80 - Customer Loop Signals and Signaling Systems Popular

By 1245 downloads

Download (pdf, 1.14 MB)

975-110-100_I2.pdf

975-110-100 i2 Jan80 - Customer Loop Signals and Signaling Systems

Contributed by Russ Kirk.

pdf 975-110-100-se Popular

By 1471 downloads

Download (pdf, 1.14 MB)

975-110-100-se.pdf

975-110-100-se

Customer Loop Signals and Signaling Systems, Issue 2,
1980-01-01, 20 pages

pdf 975-115-100 i1 Jun57 - Signals & Signaling Systems between Offices Popular

By 989 downloads

Download (pdf, 2.02 MB)

975-115-100_I1.pdf

975-115-100 i1 Jun57 - Signals & Signaling Systems between Offices

Contributed by Russ Kirk.

pdf 975-115-100-se Popular

By 1169 downloads

Download (pdf, 2.02 MB)

975-115-100-se.pdf

975-115-100-se

Signals and Signaling Systems Between Offices - Used in
Message Telephone Service - General Descriptive Information, Issue 1,
1957-06-01, 37 pages (Note: SE didn't create this PDF. Probably came from
the CIC but?SE doesn't know for sure. SE has a paper copy and they seem to be
exactly the same.)

pdf 975-120-100 i1 Jan80 - Interoffice Signals & Signaling Systems Popular

By 1119 downloads

Download (pdf, 1.83 MB)

975-120-100_I1.pdf

975-120-100 i1 Jan80 - Interoffice Signals & Signaling Systems

Contributed by Russ Kirk.

pdf 975-120-100-se Popular

By 1306 downloads

Download (pdf, 1.83 MB)

975-120-100-se.pdf

975-120-100-se

Interoffice Signals and Signaling Systems, Issue 1,
1980-01-01, 33 pages

pdf 975-215-100 I2 Popular

By 962 downloads

Download (pdf, 4.94 MB)

975-215-100_I2.pdf

975-215-100 I2
Contributed by Russ Kirk.

pdf 975-215-100-se Popular

By 1057 downloads

Download (pdf, 4.94 MB)

975-215-100-se.pdf

975-215-100-se

2400- or 2600-Cycle Single-Frequency Signaling System -
General Descriptive Information - Toll Systems, Issue 2, 1958-09-01, 16
pages

pdf 975-230-100 I2 Popular

By 1044 downloads

Download (pdf, 1.15 MB)

975-230-100_I2.pdf

975-230-100 I2
Contributed by Russ Kirk.

pdf 975-230-100-se Popular

By 1325 downloads

Download (pdf, 1.15 MB)

975-230-100-se.pdf

975-230-100-se

DX Signaling System - General Descriptive Information, Issue
2, 1975-05-01, 9 pages

pdf 975-240-100 I3 Popular

By 971 downloads

Download (pdf, 3.12 MB)

975-240-100_I3.pdf

975-240-100 I3
Contributed by Russ Kirk.

pdf 975-240-100-se Popular

By 1160 downloads

Download (pdf, 3.12 MB)

975-240-100-se.pdf

975-240-100-se

Type E Single-Frequency Signaling System - General
Descriptive Information, Issue 3, 1980-01-01, 23 pages

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 542 guests online