Packet switched network in Japan
Toshiharu Takatsuki, Jiro Iimura, Masato Chiba, Masayuki Abe · 1977
Research and development of public data networks have been conducted by various countries to cope with recent diverse data communication demands. Nippon Telegraph and Telephone Public Corporation (NTT) has also been advancing developmental projects on a packet switched network and a circuit switched network. Commercial tests on each will be begun in 1979.