Compaq Armada 7400 Reference Manual page 139

Cannot
communicate
with another
computer
Troubleshooting
The appropriate software
is not running on both
computers.
The other computer does
not have an IrDA-
compliant infrared port.
Your Compaq computer
uses the IrDA
communications
protocol.
The pathway between
the infrared ports is
obstructed, one port is
more than 30 degrees
(plus or minus 15
degrees off the center
line) from the other, or
the ports are more than
one meter apart.
There is an interrupt
request (IRQ) conflict.
There is a baud rate
conflict.
There is a conflict with
the # bits.
There is a stop byte
conflict.
There is a parity conflict.
Install the appropriate
software on the second
device, start the second
device, and start the
program on both
computers.
Communication between
infrared devices must use
the same communications
protocol. Check the manu-
facturer's instructions for
connecting with infrared
devices or try connecting
with a device you know to
be IrDA-compliant.
Remove the obstruction,
align the infrared ports to
within 30 degrees, and
position computers within
1.5 feet (about 0.5 meter)
of each other.
Check for IRQ conflicts in
the Device Manager. If
two devices have the
same IRQ address,
reassign one of the
devices.
Select the same baud rate
for both computers.
Select the same # bits
setting for both computers.
Select the same stop byte
for both computers.
Select the same parity
setting for both computers.
Continued