Fujitsu Corporation

Shigeki Takahashi

Kazuo Tanaka

Eiji Shimose

Tsuyoshi Ueshima

A high-speed signal input to and output from a high-speed optical interface part connected to an optical fiber transmission line is switched to different lines such that the switching is conducted by cross connect parts on an arbitrary basis. The high-speed signal is separated so as to obtain the low-speed signal. The low-speed signal output from the cross connect parts is separated so as to obtain the subscriber signal by signal terminal parts. Call connections are conducted for each subscriber by a time slot interchange part, whereupon a subscriber interface part performs analog-to-digital and digital-to-analog conversion so as to serve as an interface for a subscriber.

Growing community of inventors

Kanagawa, Japan

Shigeki Takahashi