【NTT】 DIPS-106-21OS

The DIPS-106-21 Operating System of Nippon Telegraph and Telephone Public Corporation (now called Nippon Telegraph and Telephone Corporation) supported the DIPS-11/5EX series hardware, implemented a 31-bit logical address, and achieved a computer communication function of an optical fiber loop. It was released in 1990. For detailed descriptions, see “DIPS-106-20OS.”