ProLiant ML350 Generation 4 Reference and Troubleshooting Guide

Troubleshooting 151
4. Be sure the modem on the other end is working.
No response occurs when you type AT commands
Action: Reconfigure the COM port address for the modem.
1. Be sure 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 to be sure no conflict
exists.
3. Type AT&F at the command prompt to reset the modem to factory-default
settings.
4. Be sure you are in terminal mode and not MS-DOS mode.
5. Refer to the HP website (http://www.hp.com
) for a complete list of AT
commands.
AT commands are not visible
Action: Set the echo command to On using the AT command ATE.
Data is displayed as garbled characters after the connection is established
Action:
1. Be sure both modems have the same settings, including speed, data, parity,
and stop bits.
2. Be sure the software is set for the correct terminal emulation.
a. Reconfigure the software correctly.
b. Restart the server.
c. Run the communications software, checking settings and making
corrections where needed.
d. Restart the server, and then reestablish the modem connection.
Modem does not answer an incoming call
Action:
1. Enable the auto-answer option in the communications software.