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πŸ›‘οΈ Failover Guide

What is Failover Internet? A Plain English Guide for UK Businesses

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Telexico Editorial Team
Business Connectivity Specialists Β· Updated March 2026

January 2025 Β· All Articles

Failover internet explained for UK businesses. How it works, what it protects, how quickly it activates and whether your business needs it.

The Simple Explanation

Failover internet is a backup connection that automatically activates when your main broadband or leased line stops working. Think of it like a generator for your internet β€” when the primary supply fails, the backup cuts in automatically, keeping your business running.

How Telexico's Assure X Failover Works

Assure X uses a dual-WAN router that monitors your primary connection continuously. When it detects a fault β€” whether it's a fibre cut, cabinet fault, router issue or Openreach maintenance window β€” it automatically switches all your business traffic to a 4G or 5G backup connection in under 60 seconds. When the primary connection recovers, traffic switches back automatically. No manual intervention at any point.

What Stays Online During Failover

  • VoIP phone calls β€” continue normally, no customer sees any difference
  • Card and EPOS terminals β€” continue processing payments
  • Cloud software β€” Microsoft 365, Xero, Salesforce all remain accessible
  • CCTV β€” remote viewing and motion alerts continue
  • VPN connections β€” staff working remotely stay connected
  • IoT devices β€” alarm systems, access control, sensors all stay live

Why This Matters More Than It Used To

Ten years ago, most business operations could tolerate a few hours offline. Today, almost no UK business can function without internet access. Cloud-based accounting, hosted phone systems, card payments, booking systems, email, Teams calls β€” all of it stops when the internet goes down. The average UK broadband outage lasts 4–8 hours. For a business processing Β£500/hour in revenue, that's a Β£2,000–£4,000 event. Assure X costs from Β£29/month.

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Mobile data on your phone only helps you personally β€” your office systems, card machines and VoIP phones are still offline. Assure X connects at the router level, so every device in your office continues working through the failover connection.

The Assure X router arrives pre-configured. Self-installation takes under 30 minutes. On-site installation by a Telexico engineer is also available across the Midlands.

There may be a brief 60-second pause as the router switches connections. After that, everything continues normally. Telexico sends you an SMS and email alert immediately so you know what's happening.

Yes β€” Assure X protects any primary connection: broadband, leased line, private fibre. Adding failover to a leased line gives you the guaranteed performance of a leased line with the resilience of 4G backup.

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