What happens when your business internet goes down?

Decide what needs to recover first

List the services that matter during an interruption: payments, phones, bookings, online orders, remote access and essential cloud applications. They may have different connection requirements.

A site might prioritise a small set of devices over the backup link rather than sending every download and update through it. Ask what the proposed router and service can support.

• Which devices need access while the main link is down?
• Which tasks can wait until the primary service returns?
• Who confirms that each important application has recovered?

Understand the switch to the backup connection

The router must be configured to detect a failure and use a suitable alternate connection. In a mobile-backup setup, that involves the router or modem, an active SIM service and usable coverage at the site.

Switching the route is not the same as preserving every active session. A call, VPN or signed-in application may need to reconnect. Recovery time depends on the equipment, settings, network and application.

There is no universal recovery time. Agree what will be tested and how the result will be recorded for your own site.

Check the limits of the complete setup

A second internet service cannot restore a failed router, a disconnected local network or equipment without power. Consider those dependencies alongside the backup connection.

nbn explains that mains-powered equipment needs an appropriate power arrangement during a blackout, and power loss in the wider network can also affect service. Discuss the required equipment and limitations with your providers.

• Check mobile coverage where the backup equipment will be installed.
• Confirm data allowances, capacity and any usage charges in the quote.
• Check the power and equipment dependencies of the devices you want to keep using.

Check public IP requirements and special devices

Some systems allow access only from an approved public IP address. A normal backup path may present a different address, so an internet connection alone may not restore access to those systems.

Telco Concepts offers an assessed fixed outbound-IP service for selected devices across primary and backup connections. It requires compatible routing equipment and a VPN-based setup; it has its own dependencies and agreed failure policy. Discuss the exact requirement rather than assuming a standard backup SIM includes it.

Payment, alarm and other specialist-device behaviour should be confirmed with the relevant equipment or service provider.

Test failure, recovery and the return to normal

Arrange a controlled test at an agreed time with the people responsible for the systems involved. Check the important applications on backup, then check their behaviour when the primary service returns.

Record what stopped, whether a user had to reconnect, and what staff should do next time. Keep the test scoped to the agreed work so it does not unexpectedly interrupt other managed services.

• Confirm the test scope and a suitable time.
• Observe the applications, not just the router connection indicator.
• Record recovery behaviour, support contacts and any outstanding actions.