What is the big switch-off?

BT is switching off the PSTN and ISDN networks. This is already under way, and is scheduled to be complete across the whole UK by December 2025. What does this mean? It means traditional landlines and broadband connections will have to be replaced.

They’re replacing this with an all-fibre network. So, internet connectivity will be all fibre, and all calls will have to be routed online. It’s a big change, but there’s good news too: this will enable you to access better, more effective technology. We’re going to walk you through what this means for your business, and how you can get ahead of the curve.

Will the ISDN switch-off have an impact on my business?

If you’re relying on ISDN or PSTN lines, yes. It could affect your ability to make and take calls, and connect to the internet. It could also affect many other services that rely on traditional copper cable infrastructure.

What products are affected?

Do you know what type of broadband connection you’re on? Well, if you’re not sure, you need to check. If you’re on an ADSL or FTTC (fibre to the cabinet) connection, you’re going to have to upgrade to full-fibre broadband.

Are your calls routed online? If not, then you’ll need to ensure it is. A cloud phone system is a great way to do this. You can find out more about these here.

And it doesn’t stop there. The PSTN switch off will impact alarm systems, fax machines, printers and even some card machines (vital to service industries who rely on this technology for generating income!)

How can my business get ready for the switch off?

Take a deep breath, it’s all going to be ok. We’ve got your back! Your first step:

Assess your technology to get a scope of what products will be impacted by the ISDN/PSTN switch-off. If you aren’t sure, don’t panic! Our expert team can talk you through your inventory and get down to the nitty gritty.

Next: Map out the needs of your team. Do you have remote workers? Do you want unified

communications? Do you need handsets? How much value would call analytics be for your cloud phone system? Discover the benefits of a cloud phone system.

Can I put this off until 2025?

December 2025 feels a long way away, but you need to act now. Burying your head in the sand could result in bigger costs and complications down the line. Last-minute surges of organisations trying switch to future-proof connectivity and technology could mean that market prices spike, putting you at risk of rushing into the wrong provider and paying more than you should.

Alongside this, leaving things too late could cause disruption to your business. Plus, you might be in a full fibre area, so why wait to experience the benefits? Contact us to see what’s available in your region and to get a tailored cloud phone system set up for your team.

two colleagues checking over a project

Choosing a cloud phone system

There’s no one-size-fits-all cloud phone system. You’ll need to think about your industry, the size of your company, whether your team work remotely, whether you handle lots of customer calls… the list goes on.

Cloud phone systems are reliable, with a monthly payment model, which allows you to have spread out, predictable costs over time.

And with the bolt-ons and additional features (not available on on-premise technology), your business can experience increased productivity and efficiency.

Here at One Connectivity, we recommend iPECS Cloud from reputable, industry-leading technology manufacturer, Ericsson-LG. Find out more here.

The future is bright

Whilst the idea of making the move to cloud technology and full fibre connectivity is a daunting one, there’s a lot to be excited about in the next era of communication.

Cloud technology can improve your customer service output, speed up productivity, and allow your remote workers the flexibility to dial in on any device, from anywhere.

Plans to expand your team? As your business grows, your iPECS Cloud system will scale with you. We recently wrote an article about connectivity for demanding teams, read it here.

The One Connectivity approach

Here at One Connectivity, we provide future-proof solutions to businesses within the East Midlands and across the UK, offering benefits beyond just helping you get switched to cloud telephony. From increased productivity to advanced call features, you can experience all your communication in one place.

For the time being, businesses can continue using their PSTN and LSDN products, but these will be cancelled in December 2025 whether you’re ready or not.

As your business creeps ever closer to the BT ISDN switch off, we want you to know – we’re in your corner, and we’re here to guide you through the process. Our expert team will thoroughly audit your technology, providing a roadmap to a tailored, future-proof connectivity and communication solution. Get peace of mind with One Connectivity.

Client Story

One Connectivity supply my businesses with both landlines and mobiles. They are, I believe, unique in the telecoms industry, they know how to provide customer service. I would highly recommend all the team at One Connectivity to anyone looking for “connected” communications.

Pat Rogerson


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