HP ML350 HP ProLiant Servers Troubleshooting Guide - Page 54

Local I/O cable problems, m problems

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Local I/O cable problems NOTE: The local I/O cable is used only with HP ProLiant p-Class server blades. Action: If the local I/O cable does not have hot-plug functionality, be sure you are not using a PS/2 keyboard or mouse. With a PS/2 keyboard or mouse, the local I/O cable cannot be connected as a hotplug device. Connect the local I/O cable before booting the server, or switch to USB devices (if supported) to use the local I/O cable hot-plug functionality. Modem problems No dial tone exists Action: 1. Be sure the cables are plugged in as specified in the modem documentation. 2. Connect a working telephone directly to the wall jack, and then test the line for a dial tone. 3. If no dial tone is detected, the phone line is not working. Contact the local telephone company and arrange to correct the problem. 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. Hardware problems 54

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Local I/O cable problems
e is used only with HP ProLiant p-Class server blades.
NOTE:
The local I/O cabl
Action
: If the local I/O cable does not have hot-plug functionality, be sure you are not using a PS/2
Mode
No dial ton
e
Action
:
1.
Be su
2.
Connect a working telephone directly to the wall jack, and then test the line for a dial tone.
cal telephone company and
arrange to correct the problem.
ss for the modem.
is set to the COM port to which the modem is connected.
e software and on the modem to be sure no conflict exists.
efault settings.
/www.hp.com
keyboard or mouse. With a PS/2 keyboard or mouse, the local I/O cable cannot be connected as a hot-
plug device. Connect the local I/O cable before booting the server, or switch to USB devices (if
supported) to use the local I/O cable hot-plug functionality.
m problems
e
xists
re the cables are plugged in as specified in the modem documentation.
3.
If no dial tone is detected, the phone line is not working. Contact the lo
No response occurs when you type AT commands
Action
: Reconfigure the COM port addre
1.
Be sure the communications software
2.
Check IRQ settings in th
3.
Type
AT&F
at the command prompt to reset the modem to factory-d
4.
Be sure you are in terminal mode and not MS-DOS mode.
5.
Refer to the HP website (
http:/
) for a complete list of AT commands.
AT com
Data is dis
nection is established
have the same settings, including speed, data, parity, and stop bits.
Restart the server.
eeded.
mands are not visible
Action
: Set the echo command to On using the AT command
ATE
.
played as garbled characters after the con
Action
:
1.
Be sure both modems
2.
Be sure the software is set for the correct terminal emulation.
a.
Reconfigure the software correctly.
b.
c.
Run the communications software, checking settings and making corrections where n
d.
Restart the server, and then reestablish the modem connection.
Hardware problems 54