The PSTN switch-off has moved to 2027. That does not mean your business should wait.

The UK’s transition away from analogue phone lines is still happening, and businesses still need to be ready. The PSTN switch-off deadline is 31 January 2027, which means services that rely on older analogue and ISDN lines will need to move to digital alternatives.

For some businesses, the revised date may feel like extra breathing space. In reality, it is a chance to plan properly and avoid a rushed move later.

Delaying action might feel easier in the short term, especially if your current setup still works. But waiting too long could leave you with fewer options, more pressure, and a bigger risk of disruption when the deadline gets closer.

What is the PSTN switch-off?

The Public Switched Telephone Network, or PSTN, is the traditional analogue phone network that has supported business communications for decades. As the UK moves to more modern digital services, these older networks are being retired in favour of internet-based alternatives.

That means businesses still relying on legacy phone lines & telephony systems will need to review what they use today and plan for what comes next.

Why the 2027 delay should not stop your planning

A planned move gives your business more control. You can review your current setup, understand what needs to change, and make decisions based on what suits your business, rather than what needs to be done urgently.

Leaving it too late can mean:

• rushed decisions
• avoidable disruption
• limited supplier availability
• missed opportunities to improve the way your business communicates

The switch-off is not just about replacing old lines. It is also a chance to modernise your setup and remove some of the limitations that come with older systems.

What this could mean for your business

Many organisations think of the PSTN switch-off as a phone system issue, but the impact can be wider than that.

Depending on your setup, you may need to review:

• business phone lines
• broadband services that still depend on older infrastructure
• alarm lines
• lift emergency lines
• door entry and access systems
• payment terminals
• fax machines
• other devices connected through analogue lines

Government guidance makes clear that businesses should check any services still relying on analogue landlines, not just voice calls.

Why moving to VoIP sooner can benefit your business

Moving to Voice over Internet Protocol, or VoIP, is not just about keeping up with the switch-off. It can also improve the way your business operates.

Lower costs

VoIP uses your internet connection rather than separate traditional phone lines, which can help reduce line rental and call costs.

More flexibility

Your team can make and receive calls from different locations using desk phones, laptops or mobile devices. This is especially useful for hybrid and remote working.

Easier scalability

Adding or removing users is usually much simpler with a digital phone system, which helps if your business changes over time.

Better features

VoIP platforms often include useful tools such as call forwarding, voicemail to email, reporting, video calling and integration with wider business systems.

A smoother route to modern communications

A move away from PSTN can support wider improvements too, from better resilience to a more joined-up communications experience.

Do not wait until it becomes urgent

Although the deadline has moved, the direction of travel has not changed. Analogue services are being retired, and businesses that plan early will be in a much stronger position than those that leave it until the last minute.

Acting now gives you time to understand what you rely on, what needs to change, and how to make the move in a way that works for your business.

Next steps for your business

A good place to start is with a simple review:

• what lines and services are currently in use
• which of them still rely on PSTN or ISDN
• whether your connectivity is ready for digital voice
• what level of resilience and flexibility your business needs

From there, you can build a practical plan for moving to a modern communications setup without unnecessary disruption.

Need help reviewing your current setup?

If you are unsure what in your business still relies on PSTN, now is the right time to check.

At dbfb, we can help you review your current environment, identify what may be affected, and plan a smooth move to modern business communications.

Book a review with our team to understand what the PSTN switch-off means for your business and what to do next.