Flash on Zyxel NR7101

@bmork my 4G ISP does something at exactly a 48 hour interval that unless properly handled results in blocked internet connectivity - this has occurred with various devices in the past.

And indeed after exactly 48 hours with my NR7101 I saw:

root@OpenWrt:~# uqmi -d /dev/cdc-wdm0 --get-data-status
root@OpenWrt:~# uqmi -d /dev/cdc-wdm0 --get-current-settings
"Out of call"

More details here.

I wonder if you know what is happening exactly here from a 4G perspective?

In any case, am I correct in understanding that on such a 'stale connection', resulting in this disconnect, the modem as configured using 'uqmi' will not automatically reconnect and some external means is needed to:

  • a) detect the disconnection; and
  • b) act upon this by reconnecting.

.. and if so, is this what ModemManager does? I had been really wondering about the difference between using only 'uqmi' and 'ModemManager' given the existence of both 'luci-pro-qmi' and 'luci-proto-modemmanager'.