Cellular Problems - ZyXEL Communications Nebula LTE3301-PLUS User Manual

I cannot connect to the Zyxel Device using FTP, Telnet, SSH, or Ping.
See the Remote Management section for details on allowing web services (such as HTTP, HTTPS, FTP,
1
Telnet, SSH and Ping) to access the Zyxel Device.
Check the server Port number field for the web service in the Maintenance > Remote Management
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screen. You must use the same port number in order to use that web service for remote management.
Try the troubleshooting suggestions for
3
suggestions about your browser.

37.4 Cellular Problems

The SIM card cannot be detected.
Disconnect the Zyxel Device from the power supply.
1
Remove the SIM card from its slot.
2
Clean the SIM card slot of any loose debris using compressed air.
3
Clean the gold connectors on the SIM card with a clean lint-free cloth.
4
Insert the SIM card into its slot and connect the Zyxel Device to the power supply to restart it.
5
I get an Invalid SIM card alert.
Make sure you have an active plan with your ISP.
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Make sure that the Zyxel Device is in the coverage area of a cellular network.
2
I get a weak cellular signal.
Find the location of your nearest cellular base stations, then install the Zyxel Device towards the direction
1
of those sites. The nearest site or site with a direct line-of-sight is usually preferred.
Chapter 37 Troubleshooting
I cannot access the Web Configurator login screen.
Nebula Mobile Router User's Guide
303
Ignore the