How should cellular backup be configured so a business does not discover it has failed during an actual NBN outage?

Cellular backup should be treated as a separate service that is tested regularly. Configure the router to check reliable internet targets, not only the physical WAN link, and set sensible failure and recovery timers. Confirm the backup SIM is active, has data available and uses the correct APN.

Test by disconnecting the primary service and by simulating a situation where the NBN modem stays powered but cannot reach the internet. Verify that critical applications continue, alerts are sent and the site can still be managed remotely. Schedule periodic tests or monitoring so an expired SIM or failed antenna is discovered before an outage. Also document the expected data limits and what traffic should be reduced on backup. Comset can confirm the failover features of the selected model, but the business needs to test its own applications end to end.