Folder AT&T Specifications (pre-BSP) (by Doc #)

CLICK HERE FOR THE LIST VIEW.

4-digit all numeric codes, used before about 1930.

Documents

pdf AT&T Spec 3855 - CP Insert Mar31 Adjustments Substation Apparatus (992 downloads) Popular Download (pdf, 363 KB)
pdf AT&T Spec 3855 - Mar17 Adjustments Substation Apparatus (1048 downloads) Popular Download (pdf, 4.49 MB)
pdf AT&T Spec 3855 - SuppB Sep30 Adjustments Substation Apparatus (1108 downloads) Popular Download (pdf, 2.11 MB)
pdf AT&T Spec 3855 - SuppC Mar31 Adjustments Substation Apparatus (913 downloads) Popular Download (pdf, 627 KB)
pdf AT&T Spec 3859 - Aug22 - Station Wiring Plans (1208 downloads) Popular Download (pdf, 1.78 MB)
pdf AT&T Spec 3859 - CP Insert Apr31 Station Wiring Plans (915 downloads) Popular Download (pdf, 374 KB)
pdf AT&T Spec 3859 - SuppB Sep30 Station Wiring Plans (1060 downloads) Popular Download (pdf, 11.43 MB)
pdf AT&T Spec 3859 Aug22 Substation Wiring Plans Ocr R (848 downloads) Popular Download (pdf, 5.42 MB)
pdf AT&T Spec 4159 - CP Insert Dec24 Maintenance Automatic Electric Dials Substations (936 downloads) Popular Download (pdf, 342 KB)
pdf AT&T Spec 4159 - Jan22 Maintenance Automatic Electric Dials Substations (1372 downloads) Popular Download (pdf, 4.61 MB)
pdf AT&T Spec 4159 - SuppA Jun24 Maintenance Automatic Electric Dials Substations (1029 downloads) Popular Download (pdf, 675 KB)
pdf AT&T Spec 4170 - Apr22 Substation Private Branch Exchange Protector Installation (1086 downloads) Popular Download (pdf, 11.82 MB)
pdf AT&T Spec 4170 - SuppA Dec24 Substation Private Branch Exchange Protector Installation (1053 downloads) Popular Download (pdf, 2.55 MB)
pdf AT&T Spec 4430 - Open Type Booths Tl (890 downloads) Popular Download (pdf, 794 KB)
pdf AT&T Spec 4455 - Public Telephone Signs Tl (1071 downloads) Popular Download (pdf, 1.05 MB)
pdf AT&T Spec 4465 7-J And 7-K Coin Collectors (611 downloads) Popular Download (pdf, 815 KB)
pdf AT&T Spec 4566 - CP Insert Oct31 Dial Manual CB Stations (1070 downloads) Popular Download (pdf, 1.42 MB)
pdf AT&T Spec 4566 - SuppB Jun30 Dial Manual CB Stations (1085 downloads) Popular Download (pdf, 1.48 MB)
pdf AT&T Spec 4566 - SuppC Nov30 Dial Manual CB Stations (1057 downloads) Popular Download (pdf, 2.28 MB)
pdf AT&T Spec 4566 - SuppD Dec30 Dial Manual CB Stations (755 downloads) Popular Download (pdf, 3.93 MB)

New User?

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

Recent Contributors

Thanks for new documents from Chuck Hensley, John Gilbert, Chuck Batson, Alan David, Steve Flocke, Paul Wills, Dave Gruger, Jim Prather, John Stancliff, Sam Etler, John Novack, Clint Gilliland, Steve Cichorsky and Paul Fassbender.

Please add your name to this list!

Who's online

We have 425 guests online