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File:The Bell System technical journal 1952 Area Code map of USA.jpg

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Description
English:

Identifier: bell00systemvol31techniamerrich (find matches)
Title: The Bell System technical journal
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company
Subjects: Telecommunication Electric engineering Communication Electronics Science Technology
Publisher: (Short Hills, N.J., etc., American Telephone and Telegraph Co.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

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Fig. J—Nationwide loll ili;iling luciis in tho UTiito<l Stales unci Ciiniula NATIONWIDE NUMBERING PLAN 859 in the customers local dialing area. For these offices with five or four-(litiit local dialing and for offices in the larger places served by certaint.\pes of dial equipment, as they are arranged today, it will be necessaryto prefix the dialing of toll calls by a transfer or directing code to permitthe customer getting from the local ofhce into the toll network. Independent of the adxantages of a universal 2-5 numbering planf(M- nationwide operator and customer toll dialing, the Bell System hasmade considcral)le progress in this direction over the past several years.\ew York antl Northern New Jersey adopted 2-5 numbering in 1930in order to take advantage of the flexibility of office code assignmentsand the large code capacity which this type of local numbering provides.Since World War II many cities and their environs such as Chicago,Boston, Philadelphia, San Francisco, Oakl

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https://www.flickr.com/photos/internetarchivebookimages/14570186909/

Author American Telephone and Telegraph Company
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Flickr tags
InfoField
  • bookid:bell00systemvol31techniamerrich
  • bookyear:1922
  • bookdecade:1920
  • bookcentury:1900
  • bookauthor:American_Telephone_and_Telegraph_Company
  • booksubject:Telecommunication
  • booksubject:Electric_engineering
  • booksubject:Communication
  • booksubject:Electronics
  • booksubject:Science
  • booksubject:Technology
  • bookpublisher:_Short_Hills__N_J___etc___American_Telephone_and_Telegraph_Co__
  • bookcontributor:Prelinger_Library
  • booksponsor:Internet_Archive
  • bookleafnumber:889
  • bookcollection:prelinger_library
  • bookcollection:additional_collections
  • bookcollection:americana
  • BHL Collection
Flickr posted date
InfoField
27 July 2014

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18 October 2015

Captions

September 1952 Bell System proposal for area codes in the eventual North American Numbering Plan.

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author name string: American Telephone and Telegraph Company

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