Progress in the 800MHz land mobile telephone system in Japan

NIPPON TELEGRAPH & TELEPHONE CORPORATION (NTT) developed an 800MHz land mobile telephone system and put it into commercial service in the Tokyo area in 1979.(1) This service has now been extended to cover most of the country. At present, it accommodates approximately 40,000 subscribers with service areas covering 500 cities. This paper describes system development over the past five years as well as various new services which NTT plans to offer in the near future.