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higher than 20s, otherwise the connection will be easily cut off by the operator, resulting
in communication failure.
2)
Enable network management:
You can set and enable network management, download Netview network
management software, and realize remote online reading and modification of DTU
configuration parameters. See related instructions for details .
3)
Reboot mode of DTU :
" Restart without SIM card " : It means that DTU can not be registered on the
operator's network due to various possible reasons, such as no signal on site, sim card
not recognized , sim arrears, etc., and DTU automatically restarts at the set time . The
default system restart time without service is 10 minutes. " Restart at Fixed intervals " :
AT+RBTYPE=2 1440 means that the DTU will be forced to restart 1440 minutes after the
DTU starts to power on and run , which is a reliability guarantee mechanism.
4)
Scheduled or timed tasks:
The DTU can execute AT commands regularly, and the specific configuration is
carried out in the following interface.