Six months to go until the PSTN switch off. Are UK businesses ready?

The countdown to the Big Switch Off (also known as the Analogue Switch Off or PSTN Switch Off)  is on. With just six months remaining until the UK cuts the copper and disconnects for the final time, those businesses still with traditional copper-wire phone lines need to sit up and take notice. 

While many organisations have already moved across to digital services, thousands of businesses are now in a race against time to make the move to Voice over Internet Protocol (VoIP) phone lines before the deadline of 31st January 2027.

Don’t forget: it’s not just phone lines that are at risk. Copper lines are also responsible for many of the following business connections:

• Alarm systems
• Lift emergency phones
• Payment terminals
• CCTV
• Telemetry
• Vending machines
• Franking machines

In this blog, we’re counting down to the Big Switch Off and bringing you up to date with everything you need to know about it, including answers to the most common questions businesses are asking.

So, here we go . . .

What is the PSTN switch off?

The PSTN switch off marks an end of the copper-wire telephony era. The retirement of the PSTN (Public Switched Telephone Network) and ISDN (Integrated Services Digital Network) has been planned for several years and it will reach its culmination at the end of January 27. At this time, traditional copper phone lines will no longer support voice calls and businesses will need to utilise broadband connections to support telephony via Voice over Internet Protocol (VoIP).

Has the PSTN switch off date changed?

When BT Openreach initially announced the PSTN switch off, the deadline was set to be December 2025. However, this was extended to give organisations more time to prepare for the transition and a new deadline of 31st January 2027 was established.

How many businesses in the UK have switched to VoIP already?

According to government data, over two thirds of UK landlines have made the switch to VoIP. This means that while significant progress has been made, there are still many thousands of lines that still need to be switched.

Who is affected by the PSTN switch off?

In short, every business still reliant on copper connections will be affected by the PSTN switch off. It is important to note that the PSTN switch off doesn’t just affect the phone systems. Many of us don’t realise how many services still rely on PSTN. Some of them are alarm systems, payment terminals, fax machines, lift emergency phones and door entry systems. 

How do I know if my business is using PSTN?

The easiest way to find out if your business is still using PSTN is to ask your telecoms provider to review your current services or to get in touch with our team at Everflow and we’ll check this for you. Even if you’ve already upgraded your phone system, it may be that other business critical equipment is still reliant on PSTN – so it’s worth carrying out a full audit ahead of the switch-off date.

What happens if I do nothing?

If businesses choose to do nothing when the switch off takes place, this will lead to services that rely on analogue copper-wire to permanently stop working. It will cause business downtime and potential disruption to voice communications and emergency systems. Needless to say, last minute migrations could be more costly, however, with six months until the PSTN switch off takes place, there’s still time for you to make the switch and avoid serious disruption.

Do I need to replace my business phone system?

Not always. Whether you need to replace your business phone system depends on your current set up. It’s important to know that it is the lines that are changing and not necessarily the tools you use to make phone calls. While some hardware is compatible with internet-based data connections, other (older equipment) will require upgrading. It is best to allow extra time and check with your current provider if you have VoIP-ready equipment.

Is my current broadband affected by the PSTN switch off?

If your current broadband uses FTTC (Fibre to the Cabinet) analogue internet lines, the PSTN switch off will affect your broadband. In this case, your business needs to make the switch to a modern alternative. If your current broadband uses FTTP (Fibre to the Premises) or Full Fibre, the PSTN switch off will not affect your business as these connections use future-proof fibre-optic cables.

What should businesses do before the PSTN switch off?

Before the PSTN switch off takes place, businesses should audit all (not just phone) systems that rely on copper-wires and upgrade them to digital networks. It’s important to keep in mind that VoIP systems require high-speed connectivity, so, if needed, businesses should also upgrade their internet connection to full fibre or SoGEA. Allow extra time and budget for upgrades and train your staff for a smooth transition.

What is the cheapest way to replace PSTN connections?

The cheapest way to replace PSTN connections is to switch over to VoIP by comparing digital telephony providers like Everflow. Because the PSTN switch off is a national change, this upgrade is essential – but it doesn’t mean that you have to stick with your existing provider.

What is the best business broadband for VoIP?

FTTP or Full Fibre are the best options for VoIP as it offers better speed, lower latency and stronger reliability. Compare our solutions here.

Can I switch broadband and phone providers at the same time?

Yes, you can switch broadband and phone providers at the same time as under the UK’s “one touch” process, you only need to contact your new provider to make the switch. When you move to Everflow, we will manage the cancellation of your current broadband and phone provider and ensure a smooth transition process.

How long does it take to switch from PSTN to VoIP?

Usually the switch from PSTN to VoIP takes around 5 to 15 working days, depending on the complexity of your current setup. However, as we’re moving closer to the PSTN switch off deadline, it’s important to allow extra time for the switch over as providers might be extra busy right before January 2027.

How much does it cost to switch to VoIP?

Small businesses can expect to pay between £7 to £13 per user per month for a VoIP phone system. Costs can vary, so why not get in touch for an accurate quote from our helpful team today. Get a quote.