Troubleshooting 78
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.
2. Be sure an answering machine is not answering the line before the modem is able to answer.
a. Turn off the answering machine.
or
Reconfigure the auto-answer option to respond in fewer rings than the answering machine.
b. Restart the server, and then reattempt the connection.
Modem does not connect to another modem
Action:
1. Be sure a dial tone exists.
2. Be sure the line is not in use at another extension before using it.
3. Be sure you are dialing the correct telephone number.
4. Be sure the modem on the other end is working.
Modem disconnects while online
Action:
1. Be sure no loose connections (on page 52) exist.
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