NTT D20 Electronic Switching System

(last updated: 16-May-2015 09:31)
 

Periodical Articles

  1. "D-20 Electronic Switching System (Part 1) - System Description and Objectives", JTR 16:4 Oct 1974 pgs 243-249 (also COSW pgs 222-231).
     
  2. "D-20 Electronic Switching System (Part 2) - Hardware and Software", JTR 17:1 Jan 1975 pgs 14-23.
     
  3. "D-20 Electronic Switching System Service Experience", JTR 19:3 Jul 1977 pgs 183-187.
     
  4. "D20 Electronic Switching System Improvement", RECL 27:5-6 May-Jun 1979 pgs 391-398.
     
  5. "Improved Speech Path Equipment for D-20 Electronic Switching System", RECL 27:5-6 May-Jun 1979 pgs 399-405.
     
  6. "Improved Central Processor for D20 Electronic Switching System", RECL 27:5-6 May-Jun 1979 pgs 406-414.
     
  7. "Improved Switching Program for D20 Electronic Switching System", RECL 27:5-6 May-Jun 1979 pgs 415-422.
     
  8. "Improved D20 Electronic Switching System", JTR 22:2 Apr 1980 pgs 98-106.