Btw, I bought another one of the exact same modem for testing at home and produces the same results as the router and modem at the remote location that I am at right now.
The GL-MT1300 at the remote location has 4.3.19 firmware on it.
I bought a kasa smart power outlet to fix my issue.
LTE would stop moving data. Tried 2 different modems. One modem never failed in one city, failed at other. Some oddity of location.
Twice a week I have scheduled power off for 10 minutes later power on. Also 3 power ons each day just in case.
Reboot isn't same as cold boot.
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Interesting idea. My router is hooked up to the battery via usb 12 volt power source and not wanting to add an inverter to the situation. I wonder if I can find something that would schedule a power disruption at that point but still be 12 volt. Any ideas for that would be appreciated.
I’m basically running all this via 12 volt battery and it’s hooked up to the router and raspberry pi. The pi is running victron Venus os to report SOC and solar input. I’m using the network for monitoring cameras remotely. Remote location doesn’t have standard power.
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Looking around on Amazon I found thishttps://a.co/d/2SII8gi maybe it can be the solution I need.
It's not clear for me how you did this wiring.
Did you try to reboot it when it's connected to the standard Power Supply?
Rebooted while connected to a 12 volt battery. There is one of these converters to step it down to the required 5v.
The battery is hooked up to solar because there is no electricity at the remote site.
Read this.
You test something and use cron maybe.
I know one can get that stuff to work on server but router may be different.
Not sure what sort of APM ACPI in in these.
And to be clear, I’ve also tired with the standard ac adapter for the router and the same issue is present.
Not sure how far off this thread has gone.
In some cases there is residual power or connection issue that locks a usb to a port so to speak. You physically need to remove the usb device to clear it.
Interesting - never heard about this before.
Did you ever get the chance to try this?
If the port lost power, it would confirm the situation that @mortneff was referring to above, and also explain the results that @bruce got.
I’m just going to go the route of using a USB power interruption device like this one.
I’m still working on it to see if this is going to work for my needs. But definitely the usb port does not power completely off during a reboot despite what others are saying for their testing.
That'll definitely work.
With your modem, for sure - but how do you know that it doesn't power off for other devices, if you've only used your modem for testing?
I’m not really interested in any other device though. I have a specific use case that I need it to work for.
Fair enough - so the result seems to be that the issue is about some USB specification weirdness - and not a faulty router which doesn't power down its USB port.
I'm not going to wade through the 631 page USB spec to find out what the issue is though!
Best of luck with your solution - and as always, I've learned something new today. 
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Reads power only, no data.
Interesting to see gizmo I never knew one might need.
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