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To issue a configuration directive to a 3G/4G modem:
Ste
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter cellular interface view.
controller cellular interface-number
N/A
3. Issue a configuration directive
to the 3G/4G modem.
sendat at-string N/A
Configuring automatic reboot
The 3G modem might malfunction in an unstable 3G network or when the application environment
changes. During a malfunction, the modem cannot respond to the device's requests or configuration
commands. If the device does not receive any responses from the 3G modem within the timeout interval,
a response failure occurs. When the number of consecutive response failures reaches the threshold, the
device restarts the 3G modem automatically.
The device does not restart the 3G modem when the 3G modem has not made a successful dialup since
the last restart. This restriction avoids repeated restarts of the 3G modem when there are configuration
errors.
To configure automatic reboot:
Ste
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter cellular interface view.
controller cellular interface-number
N/A
3. Configure the response
timeout and the threshold for
the number of consecutive
timeouts to enable automatic
reboot of the 3G/4G modem.
modem response timer time
auto-recovery threshold
By default, the response timeout is
10 seconds and the consecutive
timeout threshold is 3.
The configuration is saved on the
device rather than the 3G/4G
modem.
Configuring manual reboot
Ste
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter cellular interface view.
controller cellular interface-number
N/A
3. Manually reboot the 3G/4G
modem.
modem reboot
A 3G/4G modem can
automatically detect running errors
and reboot. If the 3G/4G modem
fails to reboot by itself, you can use
this command to manually reboot
it.
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