If your business still relies on a traditional landline phone system, you’ll need to prepare for some major changes. In 2025, across the UK, BT will be switching off the Public Switched Telephone Network (PSTN), commonly referred to as landline. This change marks the end of analogue phone lines and is something all businesses will need to be prepared for.

The big switch-off is part of a wider movement aimed at upgrading the nation’s telecoms infrastructure and bringing everything onto a faster, more reliable digital network. While this may sound daunting, it could also be a great opportunity for your business to modernise and improve communication strategies.

Let’s break down what’s changing, why it matters, and what your next steps should be.

What Is the PSTN and Why Is It Being Switched Off?

PSTN is the official terminology for the old, copper-based phone network that’s been in use now for decades, used to power landlines and ISDN systems. Whilst it may be reliable, it’s also highly outdated; With more people and businesses moving to internet-based services, there’s been less and less demand to maintain this ageing network.

The switch-off means that all services using PSTN, including traditional phone lines, fax machines and some security and alarm systems, will stop working by the end of 2025. From then on, all phone services will need to run through internet-based systems like VoIP (Voice over Internet Protocol).

What Is VoIP and Why Should Businesses Care?

VoIP allows you to make calls over the internet instead of traditional phone lines. You’ll still have phones and numbers, but they’ll all be connected via your broadband rather than the copper network.

VoIP brings flexibility, lower costs and better features for businesses. You can add lines easily, work from anywhere and integrate your phone system with other tools like CRM (Customer Relationship Management) software. With VoIP, your team can answer calls from desk phones, laptops and mobiles, whether they’re in the office, working remotely or on callout.

At Edmondson’s, we offer VoIP systems that are reliable, feature-rich and tailored to each business. We handle everything from number porting and setup to training and support, to make your transition seamless.

What Happens If You Don’t Switch in Time?

If you don’t take action before the switch-off, you risk losing access to your landline phone service entirely. This can cause major disruption to customer communications, internal operations and even things like alarms and emergency lift lines that depend on PSTN.

The sooner you move, the smoother it’ll be; Waiting until the last minute could lead to rushed decisions, limited availability or unnecessary downtime.

How to Prepare for the Switch-Off

The good news is that switching to VoIP doesn’t have to be complicated. At Edmondson’s, we’ve already helped many Yorkshire businesses make the move without disruption.

Here’s some things you should consider:

1. Check Your Current Setup

Find out what PSTN systems your business relies on. This could be your phone system, card machines, alarm systems or anything else connected to a landline.

2. Review Your Internet Connection

Since VoIP uses your internet connection, now’s a good time to check how fast and reliable your current broadband is. We can help you assess your connectivity and upgrade your Wi-Fi for you if needed.

3. Choose the Right VoIP System

Not all VoIP systems are the same. We offer systems like 3CX and PhoneLine+, which suit everything from small businesses to growing teams with more advanced needs.

4. Work With a Trusted Provider

At Edmondson’s, we provide full support through every stage, from planning and setup to post-installation support. We make sure everything works smoothly and staff feel confident using the new system.

Why Edmondson’s Is the Right Partner

We understand that businesses want to focus on customers and operations, not phone systems. That’s why we take the stress out of the switch. Our team offers tailored advice, quick response times and friendly support every step of the way.

Ready to Future-Proof Your Phone System?

The 2025 Big Landline Switch-Off is coming, but with the right support, the move to VoIP could be a positive upgrade for your business, providing more flexibility, upgraded features and reduced costs, all while keeping your old business number and improving reliability.

If you’re not sure where to start, we offer a free consultation to talk through your needs and help you plan your next steps.

Call us today on 01924 666 660 or visit our website to learn more about VoIP systems and broadband solutions.