










What is the PSTN Switch-Off?
After almost 150 years in operation, the Public Switched Telephone Network (PSTN) will be deactivated by British Telecom in 2027. This means that if your business phone system – and any connected technologies – have not moved away from analogue phone lines to a digital phone line by 2027, you’ll lose communications with your customers in an instant.
The fallout could be devastating, with your enterprise losing customers, profits and suffering irreparable reputational damage as you scramble to find a solution at the last minute.
Thankfully, there are various ways your company can stay on track, as thousands of others have already done – by embracing IP-based communication systems from reputable third-party providers, such as Elite Group. Speak to one of our experts today to find the best solution for your business.

When is the PSTN Switch-off?
The PSTN Switch-Off is happening in January 2027, with an exact date yet to be confirmed.
By acting now and making the move to internet-based comms sooner rather than later, you’ll not only be well-prepared for the switch-off, but you’ll also be offering your employees the chance to explore a more efficient and productive way of working, thanks to the abundance of digital tools this technology facilitates.
On top of this, you’ll save a fortune by avoiding late price-hikes from providers seeking to take advantage of businesses who fear being left behind.

Why is the PSTN Switch-Off Happening?
When the original copper wiring was first introduced, phone communication was much sparser than it is today. As time, technology, and population numbers progressed, these lines came under increasing strain. Today, in the age of high-speed internet and consistent connectivity, traditional voice services simply aren’t up to the task of serving the everyday needs of businesses and individuals.
By moving to alternatives like VoIP, your business will benefit from clearer, more concise communications across the board, as well as being able to engage with your customers in much more in-depth ways, thanks to advances such as Zoom CCaaS.
In this sense, what is undoubtedly an unavoidable decision for your business could also turn out to fuel customer and colleague communications, fostering productivity, both now and in the future.

What Will be Affected by the PSTN Switch-Off?
Traditional phone services aren’t the only things that will cease to work if you don’t choose an alternative to analogue lines by 2027. You can also expect a lack of service if any of the following tools are connected to the same lines:
- Phone systems
- Outdated broadband setups
- Payment terminals
- Fax machines
- Alarm systems and security systems
- Door and gate entry systems
- Emergency lines in lifts
For more information on exactly how the PSTN Switch-off will impact your business – and how new digital technology can help you keep business-critical services active – speak to a member of the Elite Group team today.

The PSTN Switch-Off Timeline
Be one step ahead of the game with key PSTN Switch-Off dates you need to know.
What Can Replace PSTN Services
How can the PSTN Switch-Off Benefit Your Business?
The PSTN Switch-Off has the power to kickstart your digital transformation journey.
Find the Ideal Mobile and Internet Communications for Your Business Operations with Elite Group
Avoid costly late upgrades and potential loss of business by arming yourself against the PSTN switch off with affordable, future-proof tools from Elite Group. We’ll work with you to discover the perfect solutions to keep your business fully connected with your customers in 2027 and beyond. From digital voice services to business broadband services and beyond, business customers will have everything they need with Elite. Speak to one of our experts today.
PSTN FAQs
Is the ISDN Switch-Off the same as the PSTN Switch-Off?
Yes. ISDN (Integrated Services Digital Network) is a digital service that also utilises the PSTN traditional copper wiring. When the PSTN switch-off occurs, ISDN services will also cease. This is why the phrases ‘PSTN switch-off’ and ISDN Switch-Off’ are often used interchangeably.
Why did the PSTN Switch-Off dates change?
The PSTN Switch-Off was originally scheduled for 2025. However, as 2025 approached, BT and telecoms companies realised that far too many businesses and households were yet to move to a digital alternative. Had the Switch-Off happened on the originally planned date, the results would have been catastrophic, with communications instantly ceasing for tens of thousands across the UK. Because of this, the Switch-Off was moved to 2027, offering people more time to explore fully digital networks and telephone services.
Will internal communications be affected by the big PSTN Switch-Off?
Yes. If your internal business comms system still runs on the traditional copper wiring when the Switch-Off happens, your colleagues will not be able to communicate with each other, nor will your customers be able to reach you if your customer-based comms utilise the same system. Moving to an internet-based alternative to the PSTN network now is the best way to solve this problem ahead of time.
What if our customers are still using analogue telephone lines?
If your customers’ landline phones are still connected via the analogue lines, they won’t be able to make or receive calls using these phones after the PSTN Switch-Off. Thankfully, though, millions of British homeowners have already made the right moves by connecting their landline phones to their broadband modems via their existing phone communication provider, meaning their calls are now fully digital and resistant to the effects of the Switch-Off.
Should I wait until 2027 to move to IP-based solutions?
No. The 2027 deadline is just that – a deadline for the completion of the project. Work has already started in locations around the UK, with businesses losing access to the PSTN. The time is now to switch to prevent disruption to your business and to find the best deals on new solutions for your business.
Do I need to replace all my phones and hardware?
Not necessarily. If you plan on accessing your new VoIP solution via an app, you can access it from a range of devices, including mobile phones, laptops, PCs and tablets, as well as VoIP-ready handsets. If you are still planning on utilising desk phones, then you will need to ensure that you can keep devices connected to the internet or adapt for VoIP via an adapter. If you are not planning on using an app to access your business phone system and your handsets cannot be connected or adapted for VoIP, then you may need to consider replacing your hardware to uphold reliable communications.