Back to Blog
Business Solutions

PSTN Switch-Off 2027: UK VoIP Migration Guide

Umbrella Broadband Team
19 January 2026

The UK's PSTN switch-off by January 2027 mandates all businesses migrate from analogue landlines to VoIP. Learn how Umbrella Broadband offers seamless connectivity and managed services for a smooth digital transition.

PSTN Switch-Off 2027: Essential Guide for UK Business Broadband & VoIP Migration

The deadline is rapidly approaching. By 31st January 2027, the Public Switched Telephone Network (PSTN)—the foundation of the UK’s traditional landline infrastructure—will be permanently switched off. This critical transition necessitates that every UK business, particularly Small and Medium-sized Enterprises (SMEs), migrates from analogue communication systems to modern, digital solutions like Voice over Internet Protocol (VoIP).

This shift is not merely an upgrade; it’s a mandatory move toward future-proof business connectivity. Businesses relying on traditional landlines, older alarm systems, or legacy point-of-sale machines must act now to ensure continuity.

Understanding the Impact on Your Business Connectivity

The PSTN switch-off affects more than just voice calls. Any service relying on copper wires or traditional analogue lines will cease to function. This includes:

  • Traditional landlines (POTS lines)

  • Older alarm systems and monitoring services

  • Lift emergency lines

  • Legacy broadband services (ADSL/FTTC) that rely on copper infrastructure

  • PDQ machines and certain fax services

To prepare, businesses must secure robust, reliable business broadband capable of supporting high-quality VoIP and other cloud-based services. This is where Umbrella Broadband excels, providing dedicated, high-speed Fibre-to-the-Premises (FTTP) and resilient leased lines.

Why VoIP is the Future of Business Communications

Migrating to VoIP (Voice over Internet Protocol) is the essential step for compliance and enhanced performance. VoIP uses your internet connection to transmit voice data, offering significant advantages over outdated analogue systems:

1. Cost Efficiency and Scalability

VoIP systems are typically cheaper to run, offering lower call rates and eliminating the need for expensive physical hardware. They scale effortlessly, allowing you to add or remove users instantly, perfect for growing SMEs.

2. Enhanced Features and Flexibility

Modern VoIP platforms offer advanced features like auto-attendant, call forwarding, video conferencing, and unified communications. Because the service is cloud-based, employees can access their business phone extension from anywhere, supporting flexible and remote working models.

3. Future-Proof Managed Services

By choosing a comprehensive provider like Umbrella Broadband, you gain access to fully managed services. We handle the entire migration process, from assessing your current infrastructure to deploying the new VoIP system, ensuring minimal disruption. Our solutions integrate seamlessly with your existing IT framework, providing reliable digital communications.

Your Smooth Migration Plan with Umbrella Broadband

Don't wait until the last minute. Proactive planning is crucial to avoid service downtime. Umbrella Broadband recommends the following steps for a seamless transition:

Phase 1: Infrastructure Assessment

We begin by auditing your current communication setup, identifying all devices reliant on the PSTN. We also assess your current internet speed to ensure it can handle the demands of high-quality VoIP and cloud applications. If your current broadband is insufficient, we recommend an upgrade to our high-speed fibre options.

Phase 2: Selecting the Right VoIP Solution

Based on your business size and needs, we recommend and configure the optimal cloud telephony platform. Our solutions are designed for ease of use and maximum uptime.

Phase 3: Seamless Installation and Support

Our expert team manages the installation, porting of existing numbers, and comprehensive testing. We provide ongoing managed services and dedicated UK support, ensuring your new digital communications platform runs smoothly long after the switch-off deadline. Contact our team today to start your migration.

Need Expert Connectivity Solutions?

Whether you're a landlord, business owner, or property developer, we have the right solution for your connectivity needs.