HP 1850R - ProLiant - 128 MB RAM Troubleshooting Manual page 86

Hardware Problems
Table 2-19: Modem Problems
Problem
There is no response
when you type
AT commands.
The AT commands
are not visible.
Data is displayed as
garbled characters
after the connection
is established.
2-44
continued
Possible Cause
There may be a conflicting port
address.
The echo command may not
be properly set.
The modems that are
connecting are not compatible.
The software may not be set
for the correct terminal
emulation.
Possible Solution
Reconfigure the COM port address for
the modem.
1. Be sure that the communications
software is set to the COM port to
which the modem is connected.
2. Check IRQ settings in the software
and on the modem.
3. Type the following at the command
prompt to reset the modem to
factory-default settings:
AT&F
4. Be sure that you are in terminal
mode and not MS-DOS mode.
Refer to the HP website for a complete
list of AT commands:
www.hp.com
Set the echo command to On, using the
following AT command:
ATE
Be sure that both modems are operating
with the same settings, including speed,
data, parity, and stop bits.
1. Reconfigure the software correctly.
2. Power down the server and restart.
3. Run the communications software,
checking settings and making
corrections where needed.
4. Restart the server and retry.
HP Servers Troubleshooting Guide
continued