Industrial Cellular VPN Router NR500 Series User Manual
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Appendix B -Q&A
No Signal
Phenomenon
NR500 Router modem status show no signal.
Possible Reason
• Antenna installation is wrong.
• Modem failure.
Solution
• Check the LTE antenna or replace with new one.
• Check the cellular page confirm modem is detected correctly or not.
Cannot detect SIM card
Phenomenon
NR500 Router cannot detect SIM card, cellular is not failed to connect to base station.
Possible Reason
• SIM card damage.
• SIM bad contact.
Solution
• Replace SIM card.
• Re-install SIM card.
Poor Signal
Phenomenon
NR500 Router no signal or poor signal.
Possible Reason
• Antenna installation is wrong.
• Area signal weak.
Solution
• Check the antenna and re-connect it.
• Contact Telecom Operator to confirm signal problem.
• Change to high-gain antenna.
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