[rescue] RS6K crossover serial cable pinout

[Steve Sandau]

OK, RS6000 null modem cable in *bad* ascii art:

  2 ----\/---- 2
  3 ----/\---- 3

  4 ----\/---- 4
  5 ----/\---- 5

  6 --|    |-- 6
  7 --|----|-- 7
  8 --+-\/-+-- 8
20 ----/\---- 20

23 ---------- 23

What this means is... 2 and 3 cross over. (Big surprise for a null 
modem.) 4 and 5 cross over, 6 and 8 on one side connect to 20 on the 
other, 7 goes straight through as does 23. Clear?

Hopefully this makes sense and works for you. It has worked for me with 
a 7011 (which I can't boot, but can mess with on the serial port) and a 
6611 router.

Good Luck

Steve