Researching the ConTelNet CCSA, pgm. 4, March 1981

Next Program:    • Researching the ConTelNet CCSA, pgm. 5, Ma...   This is very complex stuff; The Long Distance Series and Early80s pgms. 2 & 4, all on the Evan Doorbell YouTube channel, would be good to have heard before this group of recordings. This series starts here:    • Researching the ConTelNet CCSA pgm 1, July...