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BSP Categories by early Letter Code (by Doc #)

CLICK HERE FOR THE LIST VIEW.

Alphanumeric codes, used from about 1930 until the early 1960s.

Documents

Order by : Name | Date | Hits [ Descendent ]

A128.820 Toll Switchboard No. 3C or 3CL, Issue 1, April 1950 - Checking List A128.820 Toll Switchboard No. 3C or 3CL, Issue 1, April 1950 - Checking List

Date added: 01/31/2010
Date modified: 01/31/2010
Filesize: 104.75 kB
Downloads: 3256

Checking List, BSP MP Items covering sequence charts, operational sketches and associated reference material. (Central Office Maintenance)

A128.820 Toll Switchboard No. 3C or 3CL, Issue 1, April 1950 - Charts A128.820 Toll Switchboard No. 3C or 3CL, Issue 1, April 1950 - Charts

Date added: 01/31/2010
Date modified: 01/31/2010
Filesize: 4.07 MB
Downloads: 3599

Sequence charts, operational sketches and associated reference material. (Central Office Maintenance)

4A 4M Xbar SC-OS-RM 4A 4M Xbar SC-OS-RM

Date added: 02/01/2010
Date modified: 02/01/2010
Filesize: 21.69 MB
Downloads: 3264

Toll Switching System No. 4A Sequence Charts, Operational Sketches and
Reference Material, Various Dates

A128.819 I5 A128.819 I5

Date added: 02/01/2010
Date modified: 02/01/2010
Filesize: 381.18 kB
Downloads: 3440

A128.819, Checking List - BSP MP Items Covering Sequence Charts,
Operational Sketches, and Associated Reference Material - No. 4A or 4M
Toll Switching System, Issue 5, Jan. 1954

H-85950-Office-Alarm-Circuit H-85950-Office-Alarm-Circuit

Date added: 09/24/2010
Date modified: 09/24/2010
Filesize: 4.47 MB
Downloads: 4112

AB47.007 I1 Mar56 Bell System Capacitors AB47.007 I1 Mar56 Bell System Capacitors

Date added: 08/04/2013
Date modified: 08/04/2013
Filesize: 1.94 MB
Downloads: 3547

Contributed by John Novack.

AB43.910-3 AppA IA Jul50 500-Set Loop Design Tables 1950 Ocr AB43.910-3 AppA IA Jul50 500-Set Loop Design Tables 1950 Ocr

Date added: 09/19/2013
Date modified: 09/19/2013
Filesize: 640.6 kB
Downloads: 2703

Contributed by Clint Gilliland.

A702.625 I1 Mar63 23A Trans Measuring Set Desc E40.208 Ocr A702.625 I1 Mar63 23A Trans Measuring Set Desc E40.208 Ocr

Date added: 01/14/2014
Date modified: 01/14/2014
Filesize: 632.69 kB
Downloads: 2488

Contributed by John Novack.

A217.122 I7 May58 - Selector Oper Test Using Test Set Step A218.220 A252.001 Ocr R A217.122 I7 May58 - Selector Oper Test Using Test Set Step A218.220 A252.001 Ocr R

Date added: 01/24/2014
Date modified: 01/24/2014
Filesize: 407.13 kB
Downloads: 2274

Contributed by Steve Cichorsky.  OCR by Clint Gilliland

E34.061 I5 K1 Carrier Telephone Terminal R E34.061 I5 K1 Carrier Telephone Terminal R

Date added: 02/10/2015
Date modified: 02/10/2015
Filesize: 1.16 MB
Downloads: 2207

Contributed by Steve Cichorsky. OCR by Clint Gilliland.

E44.062 I1 Type K Carrier Ocr R E44.062 I1 Type K Carrier Ocr R

Date added: 02/10/2015
Date modified: 02/10/2015
Filesize: 2.16 MB
Downloads: 2136

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

Recent Contributors

Thanks for new documents from David Gruger, Jeff Lamb, Walt Aydelotte, Dennis Hock, Steve Flocke, Paul Wills, Sam Etler, Fred Haynes, John Novack, Clint Gilliland, Steve Cichorsky and Karl Brose.

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Telephone Collectors International was incorporated under the laws of the state of Kansas on May 13, 1986. The goal of the organization is "to educate the public, as well as the members of the Corporation, regarding the history of telephony, the value of old telephones and related items, their collectability and preservation; to research telephone history and publish and provide literature thereon; to promote the public exhibition of old telephones and related items; and to promote common courtesies and guidelines for use by the public." Telephone Collectors International is recognized by the Internal Revenue Service as a 501(c)(3) organization, to which U.S. tax deductible contributions can be made.