USB cable to the front of the 220a unit.
Install custom USB TO SERIAL drivers in a Wn 2000 of win 7 machine.
Install putty for a terminal program.
The very last menu is SERIAL .
set serial to 115200/7/1/EVEN/NONE.
Select SERIAL mode on the very top menu.
Push send at the bottom.
SATCOM DIRECT support 321-777-3232.