1876
  • Graham Bell Invents the Telephone
    1878
  • First Telephone of Domestic Production
    1890
  • Telephone Service Between Tokyo and Yokohama Started (Founding of Telephone in Japan)
  • Gower-Bell Telephone Used (First Telephone for Practical Use in Japan)
    1896
  • Delville Wall Telephone Replaces Gower-Bell Telephone
    1897
  • Delville Magnetic Ko-Type Desk Telephone
    1899
  • Japan's first long distance telephone service (Tokyo - Osaka)
  • Debut of Solid Back Magnetic Wall Telephone
    1900
  • Submarine Cables for Long Distance Calls Laid
    1903
  • Debut of Gooseneck Common-Battery Wall Telephone
    1905
  • Long distance phone line opened between Tokyo and Sasebo (approx. 1,550km)
    1909
  • Debut of No.2 Common-Battery Wall Telephone
    1923
  • The Great Kanto Earthquake Destroys Telephone Facilities in the Kanto Region
    1926
  • Aomori - Hakodate line opened and long distance services between Honshu and Hokkaido introduced
    1927
  • No. 2 Automatic Desktop Telephone Set Introduced
    1928
  • Japan's First Long-Distance Charged Cable Service Begins (between Tokyo and Kobe)
    1933
  • No. 3 Desktop Telephone Set Completed
    1950
  • No. 4 Desktop Telephone Set is Developed, Mass Production Begins
    1953
  • The No. 23 Wall Mounted Automatic Telephone Set
    1954
  • First Tokyo-Nagoya-Osaka Microwave Transmission
    1962
  • The Model 600 Telephone Set
    1968
  • Ten Million Telephone Subscribers Nationwide
    1969
  • Push Button Phones
    1972
  • The charging structure for local calls was reviewed and time-based (per 3 minutes) charging adopted (wide area time-based system)
    1976
  • Unit of Charge for Dialed Calls Changes from 7 Yen to 10 Yen
    1978
  • Subscriber telephone backlog eliminated
    1979
  • Japan's Telephones Become 100% Automatic
    1980
  • Night-time call discount hours extended and a late night discount introduced
    1983
  • The Tokyo - Chichijima (Ogasawara) satellite link completes the installation of direct dialing for the entire country
    1985
  • The Japan end-to-end optical fiber cable transmission line was completed (Asahikawa - Kagoshima)
  • User-Installed Main Telephones Introduced (Terminal Equipment Liberalization)
  • Automatic Answering Telephone "Response"
    1986
  • Saturday Calling Rates Reduced
    1987
  • Clover Phone
    1988
  • Rates Revised for Direct-Dialed Calls (Daytime Rates for Inter-Area Calls over 320km Reduced From 10 Yen per 4.5 Seconds to 10 Yen per 5 Seconds)
  • INS Net64 Service Begins in Tokyo, Nagoya, Osaka
  • Howdy Cordless Phone "Passe"
    1992
  • Long Distance Calling Charges Reduced
    1993
  • Ultra High-Speed (150Mb/s) Leased Line Service Introduced
  • Medium and Long-Distance Rates Reduced
    1995
  • Revision of Base Rates and Directory Assistance Charges
    1995
  • Digital Cordless Phone PIET S100-S Set

    museum@mod.hqs.ntt.jp