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Life After the PSTN Switch-Off: What’s Next for Your Business

“The PSTN switch-off is just the beginning—now, real digital transformation can begin.”

Picture of Natalie Strange

Natalie Strange

Managing Director @ RPS Telecom

What is PSTN – and why is it Ending?

PSTN stands for Public Switched Telephone Network — the traditional copper-line system that’s carried voice calls in the UK for decades. For many businesses, it’s been the backbone of communications, supporting everything from desk phones to fax machines and even some alarm systems.

But times have changed and the PSTN Switch-off means that existing lines are being phased out because the infrastructure is outdated, costly to maintain, and unable to keep up with modern digital demands. The UK’s final switch-off date is 31st January 2027, marking the end of PSTN and ISDN services.

This isn’t just about switching off an old system nor is it a scary thought for your business and its communications. It’s about moving to faster, smarter, digital-first communication primarily through up-to-date systems such as VoIP (Voice over Internet Protocol).

Are PSTN Lines Being Phased Out?

Yes, simply put, the existing PSTN lines are being completely phased out in the UK. The process began with the Stop Sell in September 2023, meaning no new PSTN or ISDN services can be purchased or upgraded. From 2024 onwards, existing services are being gradually withdrawn, leading to the final switch-off date.

What do you need to be aware of?

  • Openreach only needs to give 90 days’ notice before shutting down a WLR (Wholesale Line Rental) circuit.
  • This means you could lose your traditional landline or broadband service with just three months’ warning.
  • If you haven’t already switched, your current service could disappear quickly once the notice is issued.

This affects every business still relying on copper-based lines. Whether PSTN supports your voice calls, broadband, alarm systems, or card machines, these services will no longer function once withdrawn.

At RPS Telecom we see this as a positive, it may seem stressful right now but modern alternatives like VoIP (Voice over Internet Protocol) and fibre-based broadband provide faster, more reliable, and more cost-effective solutions — ensuring your business stays connected and future-ready.

But times have changed and the PSTN Switch-off means that existing lines are being phased out because the infrastructure is outdated, costly to maintain, and unable to keep up with modern digital demands. The UK’s final switch-off date is 31st January 2027, marking the end of PSTN and ISDN services.

This isn’t just about switching off an old system nor is it a scary thought for your business and its communications. It’s about moving to faster, smarter, digital-first communication primarily through up-to-date systems such as VoIP (Voice over Internet Protocol).

Worried about The Big Switch Off?

Our telecoms experts can help you every step of the way, from analysing your current systems to getting you switched over to a new modern VoIP and broadband system that streamlines the future of your business.

Learn more here

What Business Communications Look Like After PSTN

January 2027 marked the definitive end of the PSTN era in the UK. Traditional voice lines are gone, replaced by digital-first systems—ushering in a new era of business communications. But this isn’t a disruption, it’s an opportunity.

Here’s your post-PSTN reality:

Far from being a disruption, the PSTN switch-off is a launchpad for digital transformation. Here’s what the future of business communications looks like:

  • Reliable, high-speed digital infrastructure as your foundation
  • Flexible VoIP systems tailored to your sector and needs
  • Scalable, secure services that grow with your business
  • Smarter customer experiences driven by integration and data

This is the time to rethink what your communications can do, not just what they used to be.

Why VoIP is the Natural Successor to PSTN

With PSTN behind us, VoIP isn’t just an alternative—it’s a powerful upgrade. Here’s how it fuels productivity and excellence in customer experience:

Crystal-Clear Communication, Everywhere

High-definition calls keep your team connected — whether in-office, hybrid, or remote. No more dropped analogue lines, just consistency.

Speed, Efficiency & Integration

VoIP bridges your phone system with CRM tools, email, instant messaging, and more. That means:

  • Faster lead responses
  • Smarter customer support workflows
  • One-touch call transfers and analytics — all from the same interface
Smarter Customer Service

VoIP offers features like advanced call routing, IVR, call recording, and call queuing—so you can:

  • Reduce wait times
  • Personalise customer journeys
  • Track performance using real-time analytics

Perfect for sectors like financial services, healthcare, education, and legal—where responsiveness and reliability are non-negotiable.

Scalability at Your Pace

Growing business? Branching into new sectors like logistics or manufacturing? VoIP scales with you. Add or remove lines, adjust features, or extend across locations — all under one roof.

Built for the Hybrid Era

Hybrid work is now business as usual. VoIP ensures your team can make, receive, and collaborate from anywhere — making remote productivity seamless. Ideal for sectors with flexible working models like education, healthcare, and travel.

Your Next Steps After PSTN

Here’s how businesses can thrive with a modern, VoIP-powered setup:

  1. Review what’s working.
    Audit current voice and network systems. Identify bottlenecks or outdated processes.
  2. Scale with precision.
    Introduce VoIP where needed—link teams, automate call flows, or prepare seasonal boosts.
  3. Train and onboard smartly.
    VoIP systems are intuitive—train staff and give them confidence using features like CRM integration.
  4. Measure and optimise.
    Monitor call statistics, performance dashboards, client feedback. Use insights to refine processes continuously.
  5. Stay future-ready.
    Think beyond VoIP—consider blended services like TeamsTalk, unified connectivity, or intelligent contact centres. RPS is ready to help you explore what’s next.

Worried about The Big Switch Off?

Our telecoms experts can help you every step of the way, from analysing your current systems to getting you switched over to a new modern VoIP and broadband system that streamlines the future of your business.

Learn more here

Final Thoughts

The PSTN switch-off marks a major shift in UK communications. By January 2027, every copper line will be retired, and businesses relying on them could face sudden disruption. Digital-first solutions like VoIP and fibre broadband are here to replace PSTN, but they not only transform how businesses connect they deliver modern benefits such as speed, reliability, flexibility, and smarter customer experiences.

At RPS Telecom, we make that transformation simple. With two decades of telecom expertise, sector-specific solutions, and a seamless migration process, we’ll help you move forward without disruption and stay ahead of the curve.

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