• DocumentCode
    1373775
  • Title

    Automatic switching for nation-wide telephone service

  • Author

    Clark, A. B. ; Osborne, H. S.

  • Author_Institution
    Bell Telephone Laboratories, Inc., New York, N. Y.
  • Volume
    71
  • Issue
    4
  • fYear
    1952
  • Firstpage
    245
  • Lastpage
    248
  • Abstract
    A plan for automatic longdistance switching, which ultimately will embrace the entire area of the United States and extend into Canada and perhaps Mexico has been formulated and important steps have been taken toward its realization. The plan contemplates that when a telephone customer places a call with a longdistance operator, this operator will be able to establish a connection to any desired telephone simply by playing a 10- or 11-digit code into an automatic mechanism. She will receive distinctive signals when the called telephone answers or when the telephone or the toll circuits are busy. Thus she will control completely the establishment of the connection and will have available to her the information necessary for proper billing of the call. The plan also contemplates that telephone customers ultimately will be able to dial long-distance calls themselves, wherever may be the locations of the calling and called telephones.
  • Keywords
    Cities and towns; Companies; IEEE transactions; Switches; Switching systems; Urban areas;
  • fLanguage
    English
  • Journal_Title
    American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
  • Publisher
    ieee
  • ISSN
    0097-2452
  • Type

    jour

  • DOI
    10.1109/TCE.1952.6371853
  • Filename
    6371853