You are here: Home > Browse the Library > BSPs (Bell System) > by Division Number > All Divisions > 300 - 379 Divisions - Transmission Sys & Testing > 310 Division - Private Line Tel Systems & Services

Check out the TCI YouTube channel here. Please subscribe!

Check here for the 2024 Telephone Shows

Folder 310 Division - Private Line Tel Systems & Services

Documents

pdf 310-280-501 I2 Popular

By 566 downloads

Download (pdf, 1.71 MB)

310-280-501_I2.pdf

310-280-501 I2
310-280-501     19A Testboard - Operational Tests                          2       1966-03-01

pdf 310-281-100 I1 Popular

By 770 downloads

Download (pdf, 1.37 MB)

310-281-100_I1.pdf

310-281-100 I1
310-281-100     17E Testboard - General Description                    1       1964-09-01

pdf 310-281-300 I1 Popular

By 833 downloads

Download (pdf, 300 KB)

310-281-300_I1.pdf

310-281-300 I1
310-281-300     17E Testboard - Measurement and Adjustment of Pads for the Transmission Measuring Circuit                        1       1964-07-01

pdf 310-281-500 I1 Popular

By 658 downloads

Download (pdf, 310 KB)

310-281-500_I1.pdf

310-281-500 I1
310-281-500     17E Testboard - Measurement and Adjustment of Office Losses                         1       1964-08-01

pdf 310-281-501 I2 Popular

By 734 downloads

Download (pdf, 895 KB)

310-281-501_I2.pdf

310-281-501 I2
310-281-501     17E Testboard - Operational Tests                          2       1966-08-01

pdf 310-282-100 I1 Popular

By 545 downloads

Download (pdf, 814 KB)

310-282-100_I1.pdf

310-282-100 I1
310-282-100     21A Testboard - General Description                    1       1965-11-01

pdf 310-282-300 I1 Popular

By 671 downloads

Download (pdf, 429 KB)

310-282-300_I1.pdf

310-282-300 I1
310-282-300     21A Testboard - Measurement and Adjustment of Transmission Test Trunks                         1       1965-12-01

pdf 310-282-500 I1 Popular

By 712 downloads

Download (pdf, 303 KB)

310-282-500_I1.pdf

310-282-500 I1
310-282-500     21A Testboard - Measurement of Office Losses                         1       1965-12-01

pdf 310-282-501 I1 Popular

By 696 downloads

Download (pdf, 1.30 MB)

310-282-501_I1.pdf

310-282-501 I1
310-282-501     21A Testboard - Operational Tests                          1       1965-12-01

pdf 310-290-100 I1 Popular

By 836 downloads

Download (pdf, 332 KB)

310-290-100_I1.pdf

310-290-100 I1
310-290-100     Manual Conference Circuit for 4-Wire No. 5 Crossbar Offices With 5C or 5D Switchboard - Description                    1       1964-04-01

pdf 310-290-500 I1 Popular

By 713 downloads

Download (pdf, 232 KB)

310-290-500_I1.pdf

310-290-500 I1
310-290-500     Manual Conference Circuit for 4-Wire No. 5 Crossbar Offices With 5C or 5D Switchboard - Service Maintenance                    1       1964-04-01

pdf 310-291-100 I1 Popular

By 664 downloads

Download (pdf, 241 KB)

310-291-100_I1.pdf

pdf 310-300-300 I1 Popular

By 685 downloads

Download (pdf, 501 KB)

310-300-300_I1.pdf

310-300-300 I1

Contributed by Russ Kirk.

pdf 310-300-500 I4 Popular

By 717 downloads

Download (pdf, 336 KB)

310-300-500_I4.pdf

310-300-500 I4
310-300-500     Two-Point Private Line Telephone Circuits - Over-All Measurements                   4       1962-08-01

pdf 310-300-500 I7 Popular

By 666 downloads

Download (pdf, 529 KB)

310-300-500_I7.pdf

310-300-500 I7

Contributed by Russ Kirk.

pdf 310-305-100 I3 Popular

By 565 downloads

Download (pdf, 208 KB)

310-305-100_I3.pdf

310-305-100 I3

Contributed by Russ Kirk.

pdf 310-405-100 I1 Popular

By 641 downloads

Download (pdf, 3.44 MB)

310-405-100_I1.pdf

310-405-100 I1
310-405-100     Private Line Telephone Service - Multistation Systems - Description                    1       1957-11-01

pdf 310-405-500 I3 Popular

By 714 downloads

Download (pdf, 2.42 MB)

310-405-500_I3.pdf

310-405-500 I3
310-405-500     Private Line Telephone Service - Multistation Systems - Tests and Adjustments                    3       1962-08-01

pdf 310-410-100 Add I1 Popular

By 519 downloads

Download (pdf, 20 KB)

310-410-100_Add_I1.pdf

pdf 310-410-100 I1 Popular

By 583 downloads

Download (pdf, 530 KB)

310-410-100_I1.pdf

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 620 guests online