Modem-Specific Troubleshooting
If you are confident that a modem is installed and configured correctly, but it's still not working properly, you can test and configure it by using special commands from the AT command set. Table 12 lists some of the most commonly used AT commands.
|
AT Command |
Result |
|---|---|
|
ATA |
Sets the modem to auto-answer |
|
ATH |
Hangs up an active connection |
|
ATD |
Dials a number |
|
ATZ |
Resets the modem |
|
ATI3 |
Displays the name and model of the modem |
In general, getting the modem to respond to an ATZ command is a good enough indicator that the modem is functioning.