A fully functional null modem cable for 25pin connectors:
Computer  Computer
--------  --------
   1 ------- 1

   2 ---X--- 2
   3 ---X--- 3

   4 ---X--- 4
   5 ---X--- 5

+- 6         6 -+
|  7 ------- 7  |
+- 8 ---X--- 8 -+
  20 ---X-- 20


edited by doj. homepage www.cubic.org