4G USB modem periodic disconnect (tether or 3G mode)

Technical Support for Routers
1

I’m using an AR-300M with a Verizon 4G USB modem (U620L) and am able to establish an LTE connection using either “3G” mode or Tethering mode. Either seems to work for a few minutes, but then the connection drops. The router will attempt to re-establish the link with varying degrees of success. I’ve attached a log showing the tethered connection dropping and trying to re-establish.

I would appreciate any suggestions on how best to debug the issue.

Thank you in advance for any guidance.

Jonathan

2

Always try to use Tethering to try first. The connection of network should be maintained by the modem itself so I expect it should be stable.

What is the power source are you using? Can you use a stronger one.

I am not quite understand the reason actually.