Start with the tasks that stop when the internet fails. Then decide which need a backup connection, how staff will switch and how to test it.
Know what stops first
List the work that depends on the connection: card payments, cloud phones, bookings, email, tills, remote access and online orders. Rank each by how long it can be unavailable and what a workaround would cost.
Choose backup for the real risk
A 4G or 5G router can provide another path, but it depends on usable mobile signal, network capacity, data allowance, router compatibility and power. A second fixed line may share infrastructure or an entry route with the primary service. Ask providers what is genuinely diverse and what the backup costs when used.
Decide what should fail over
Some routers can switch automatically; others need a person to connect a phone hotspot or change settings. Confirm which devices will use backup, whether voice calls will continue and whether security controls still apply. Test the exact workflow, not just a speed test.
Write the response on one page
Include the provider fault number, account details, who reports the outage, how staff take payments, how customers are updated, and who authorises a temporary workaround. Store it somewhere staff can access without the office broadband.
Test and review
Run a short exercise: disconnect the primary service and check that critical work can continue on backup. Measure whether calls, payments and cloud tools work, and how long the switchover takes. Repeat after equipment, provider or premises changes. Keep backup batteries and data plans in date.
Match resilience to the cost of downtime
A small office may be able to pause some tasks; a busy service desk may need faster recovery and more formal support. Compare the cost of backup and support with the impact of lost trading, then document the decision. The Calls Warehouse can help review business connectivity and backup options.
Further reading
Sources checked 3 November 2026. Guidance can change; confirm current availability and contract terms with the relevant provider.
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