If you really enjoy fiddling with connection problems and gateways freezing you should try using the gsm gateway. At first it froze up every day or two. I now run a second mcu just to check connectivity to mycontroller and resetting the gateway when it fails. This sometimes happen a couple of times a day.

Hi Guys, I'm having an issue with my GSM gateways. The will stay connected for a couple of days and then loses connection (not sure what causes this). The gateway tries to reconnect to the MQTT broker but fails and keeps trying indefinitely. The problem seems that the modem loses its gprs connection and works fine once restarted.

Can the MQTT re-connection attempts be limited to say 10 and if it still fails, restart the modem?