• DocumentCode
    1358554
  • Title

    Communications: Electronic telephone switching in Japan: For Nippon Telegraph and Telephone, D-10 and D-20 are ¿household¿ words, as is ¿ESS¿ in the U.S.

  • Author

    Shiromizu, M.

  • Author_Institution
    Nippon Telegraph and Telephone Co., Tokyo, Japan
  • Volume
    13
  • Issue
    6
  • fYear
    1976
  • fDate
    6/1/1976 12:00:00 AM
  • Firstpage
    65
  • Lastpage
    66
  • Abstract
    Since 1964, NTT´s (Nippon Telegraph and Telephone) Electrical Communication Laboratory has worked on the development of electronic switching systems with four manufacturing companies. The consortium has produced the D-10 system for large offices, the D-20 system for small and medium offices, and the D-10-R1 remote control system for extensions in existing offices.
  • Keywords
    electronic switching systems; telephone switching equipment; electronic switching system; hardware; software; speech path network; telephone switching; traffic density; Electronic switching systems; Hardware; Maintenance engineering; Process control; Software; Switches;
  • fLanguage
    English
  • Journal_Title
    Spectrum, IEEE
  • Publisher
    ieee
  • ISSN
    0018-9235
  • Type

    jour

  • DOI
    10.1109/MSPEC.1976.6369225
  • Filename
    6369225
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1358554