The PSTN Switch-Off Is Coming. Is Your Business Ready?
Find out if your business is ready for the 2027 PSTN switch-off.
The UK’s copper phone network will be switched off by 2027. Every business using PSTN or ISDN must move to digital lines before it’s too late.
That means every legacy phone line, alarm system, lift phone, card machine and fax still running on PSTN will soon stop working.
What's Really at Stake?
Your phones line could go dead overnight
Payment terminals may fail to connect.
Door entry systems and alarms could lose their link to monitoring centres.
Businesses left behind will pay more for emergency fixes and rushed migrations.
Most companies won’t realise the danger until their phones stop ringing. By then, it’s too late.
The Timeline You Can’t Ignore
BT Openreach has already begun retiring PSTN exchanges across the UK. By the end of 2025, most new PSTN and ISDN services will be unavailable.
By the end of December 2026, the network will be gone entirely.
Areas in Surrey, Hampshire and Dorset are already in “stop-sell” zones. No new analogue lines. No reinstalls. No way back.
The Solution Is Simple
You don’t need to be a telecoms expert. You just need to know what still relies on PSTN, and how to replace it before the deadline.
That’s where we come in.
Renegade Networks specialises in helping UK businesses make the move to reliable, cloud-based VoIP and all-IP systems, without downtime or disruption.
We’ll audit your setup, map out the risks, and give you a clear, no-pressure migration plan.
And because we want every business to be ready, your PSTN Readiness Check is completely free.
Why Businesses in Surrey, Hampshire & Dorset Trust Renegade Networks
We work directly with leading UK network providers and hardware specialists to keep your systems secure and future-proof.
Some of our tech suppliers
Book your Free PSTN Readiness Check
Find out if your business is ready for the 2027 PSTN switch-off.
Frequently Asked Questions
Will my phones stop working after the PSTN switch-off?
Yes. When the PSTN shuts down in 2027, any service still using analogue or ISDN lines will stop working. That includes desk phones, fax machines, alarm panels and entry systems. Switching to an internet-based system (VoIP or SIP) keeps your business connected without interruption.
Why should I act now if the switch-off isn’t until 2027?
Because parts of the UK are already in “stop-sell” zones where no new analogue services are allowed. Waiting could mean higher prices, fewer engineers and rushed migrations later. Acting now gives you more choice and lower cost.
How will the switch-off affect my business operations?
Anything that still relies on a landline may fail once PSTN is gone. Phones, card machines, alarms and lift lines all need digital alternatives. A readiness check lists what to replace and how to do it safely.
Will I lose my business number?
No. Your existing numbers can be transferred to your new VoIP system. Ofcom requires all providers to allow number porting, so your customers keep calling the same number.
Is VoIP reliable if the internet goes down?
Yes. Modern business VoIP runs on redundant networks. Calls can automatically route to mobiles or backup lines if your broadband fails, so no call is missed.
How much will migration cost?
Usually less than staying on PSTN. Most SMEs cut monthly costs by 10–30 % once they move to digital. The readiness plan outlines costs, savings and best options before any commitment.
Do I need to replace my hardware?
Not always. Many routers and phones already support VoIP. We test compatibility first and only recommend upgrades if needed.
Who is responsible for making this change?
Each business is responsible for its own migration. Your existing provider may offer options, but planning early with a specialist like Renegade Networks ensures everything moves smoothly before deadlines.
Can I still make emergency calls?
Yes. VoIP systems fully support 999 calls. During setup, we register your business address so emergency services can locate you instantly.
Is the free readiness check really free?
Yes. It’s a no-obligation service that shows how ready your business is and what steps to take next and you can act on the plan yourself. We know that by demonstrating our expertise, you are more likely to ask us for help (but you don’t have to).
What if I’m not ready yet?
That’s exactly why we offer the readiness check. It helps you see what’s at risk and build a plan at your pace, with no obligation.