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PSTN, ISDN, the “big switch off” – they’ve all been spoken about across the telecommunications industry, but what is it and what’s actually happening?

We’ve put together a PSTN (Public Switched Telephone Network) hub to help you understand what the PSTN Switch Off is and, more importantly, what your business needs to do to be prepared for the PSTN Switch Off.

We’ve compiled content such as guides, infographics and blogs which will help you understand the furore and get your business future-proof and ready.

What is the PSTN Switch Off?

In 2025 the PSTN will be switched off so, if you’re still utilising fixed line services such as analogue or ISDN lines, these services will be withdrawn in 2025.

To ensure your business is able to collaborate, communicate and connect after 2025, you’ll need to start thinking about migrating to hosted telephony and, to do that, you’ll have to have a business broadband connection or Ethernet leased line in place to support your VoIP system.

If you’re still unsure what’s happening, we’ve got some content below and we’ll be adding to this page over the next few years to keep you informed and updated.


The Big 2025 Switch Off

Your guide to the PSTN Switch Off

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Chartwell Mortgage Services Chartwell Mortgage Services 31-500 employees

Chartwell Mortgage Services has been operating in the UK for more than 13 years, offering independent mortgage and financial advice to customers across the country. The Challenge Chartwell used to h...

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PSTN Switch Off Update Resource

The PSTN Switch Off is a drum we’ve been banging for a couple of years now and we’re not about to stop anytime soon. In fact, it’s now less than five years before the PSTN gets switched off for ...

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Answers to your questions about the PSTN 2025 Switch Off Resource

PSTN, ISDN, the “big switch off” – they’ve all been spoken about across the telecommunications industry, but the facts can often get lost in the furore. We’ve compiled this useful blog to...

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A Guide to the 2025 Big Switch Off Resource

The PSTN switch off is coming! The PSTN (Public Switched Telphone Network) will be switched off in 2025 but with so much scaremongering around the subject, we've made a guide to help you understand wh...

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Stop Sell Explained Resource

The full fibre rollout is full steam ahead thanks to Openreach and its partners and some areas of the UK are pressing ahead quicker than others. Back in 2018, Openreach announced the closure of the...

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Understanding a VoIP Phone System Resource

A VoIP phone system is the current trend among businesses and there's a good reason why cloud communication is a trending buzzword. By getting rid of their premise-based phone systems, companies are d...

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How a Small Business Can Benefit From A VoIP Phone System Resource

You might have heard the words Voice over Internet Protocol (VoIP) being spoken about over the last few years. But do you know what it is, what it does or how it can be beneficial to your small busine...

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How transforming your phone system can make your business mobile Resource

Remote working is growing and taking the world of work by storm so much so that experts predict that by 2020, more than 70% of UK organisations will have adopted flexible working. However, having a...

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Withdrawal Explained Resource

The PSTN Switch Off is something you’ll have no doubt heard about already. However, if you’re still unsure about what’s happening, we’re here to help you understand. By December 2025, the t...

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