3Com Router User Manual
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Modem Configuration Examples755
Restore the ex-factory modem settings
To restore the ex-factory modem settings, use the “AT&F” command.
[Router]script-string factory AT OK AT&F OK
[Router]interface serial 0
[Router-Serial0]start-chat factory
Configure the modem initialization parameters
Correctly initializing the modem configuration is an important step for the correct
connection with the modem. The following contents briefly introduce the
conventional AT initialization commands and the works for...](http://img.usermanuals.tech/thumb/92/102800/w64_index.html@nav=null&now=get&message=Downloading&file=3012-758.png "Page 759
Modem Configuration Examples755
Restore the ex-factory modem settings
To restore the ex-factory modem settings, use the “AT&F” command.
[Router]script-string factory AT OK AT&F OK
[Router]interface serial 0
[Router-Serial0]start-chat factory
Configure the modem initialization parameters
Correctly initializing the modem configuration is an important step for the correct
connection with the modem. The following contents briefly introduce the
conventional AT initialization commands and the works for...")
![Page 760
756CHAPTER 52: CONFIGURING MODEM
Power-on Initialization
through the
Initialization ScriptEnable the router to initialize the modem to which the asynchronous interface is
connected when powering on the router or rebooting it.
[Router] script-string init AT OK AT&B1&C1&D2&S0=1 OK AT&W OK
[Router] interface async 0
[Router-Async0] modem
[Router-Async0] start-chat init
Use the Script to Dial
DirectlyConfigure a modem script and direct dial.
[Router] script-string dial AT OK ATDT8810058 CONNECT...](http://img.usermanuals.tech/thumb/92/102800/w64_index.html@nav=null&now=get&message=Downloading&file=3012-759.png "Page 760
756CHAPTER 52: CONFIGURING MODEM
Power-on Initialization
through the
Initialization ScriptEnable the router to initialize the modem to which the asynchronous interface is
connected when powering on the router or rebooting it.
[Router] script-string init AT OK AT&B1&C1&D2&S0=1 OK AT&W OK
[Router] interface async 0
[Router-Async0] modem
[Router-Async0] start-chat init
Use the Script to Dial
DirectlyConfigure a modem script and direct dial.
[Router] script-string dial AT OK ATDT8810058 CONNECT...")
Troubleshooting757 ■If the modem is still in abnormal status, proceed to run the AT string, such as “AT&F OK ATE0S0=0&C1&D2 OK AT&W” on the router physical interface connected to the modem.