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
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