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Call-a-matic Automatic Dialers


First there was the 1671, then the 2671.  Find out the differences in the BSPs and read about the history in a Bell Labs Record article.  Simply search for "Call-a-matic"

Major TCI Library Sections

  • Bell System Practices
    • Index Documents
    • Handbooks
    • Early AT&T Specifications
    • BSPs: Letter-coded
    • BSPs: Numeric Division Numbers
    • Canadian Practices
  • Bruce Crawford Switching Library
    • WEco Switching Documents
    • SDs and CDs
    • Manufacturer Catalogs and Data Sheets
  • Wiring Diagrams
  • Catalogs, Manuals and Educational Documents
    • Employee Publications
    • Marketing Brochures
    • Training Manuals
To browse the Library by category, start with Browse the Library in the Black Menu Bar above and select Document Repository.

TCI Members Only Documents (MOD)
In addition to documents in the Library, TCI Members can access documents that were contributed to TCI with the restriction that they are made available to TCI Members only, and are not to be posted on any publicly available web site.
Most are large manufacturer catalogs, restricted distribution documents or files that have had extensive processing by TCI volunteers, such as page straightening, clean-up and OCR.
The MOD area is accessed from the Members Area menu entry on the TCI site or the Members Area link under TCI Sites in the menu above on this page.

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.