Tohru Uchiyama, Naohisa Ohta, Kazuo Watanabe, Kazuo Imai

Research output: Contribution to journalArticle


This paper describes the underlying technology, system configuration, and trial manufacturing results for an improved D 50 circuit switching system. The developed system features: 1) low cost fulfillment of medium scale damand; 2) new switching and signal processing architecture facilitating advanced data communication; and 3) telex terminal accommodation capability within the same network. A 35%-40% cost reduction in equipment can be expected through use of a simple one-stage time division switch with frame synchronization, and through realization of a line concentrator unit using newly developed LSIs.

Original languageEnglish
Pages (from-to)2353-2367
Number of pages15
JournalDenki Tsushin Kenkyusho Kenkyu Jitsuyoka Hokoku
Issue number10
Publication statusPublished - 1984 Dec 1

ASJC Scopus subject areas

  • Engineering(all)

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    Uchiyama, T., Ohta, N., Watanabe, K., & Imai, K. (1984). IMPROVED D 50 CIRCUIT SWITCHING SYSTEM. Denki Tsushin Kenkyusho Kenkyu Jitsuyoka Hokoku, 33(10), 2353-2367.