The UK’s Public Switched Telephone Network (PSTN) is being permanently switched off on 31 January 2027. Any business still using analogue phone lines or ISDN services must move to digital alternatives before then – or risk losing service altogether.
While 2027 may feel some way off, the transition is already underway, and delaying action could lead to disruption, rising costs, and operational risk.
What Is the PSTN Switch-Off?
PSTN is the traditional copper-based phone network that has supported UK landlines for decades. It also underpins many business-critical systems, including:
- Desk phones and ISDN lines
- Alarm and security systems
- Payment terminals
- Lift and emergency phones
- Fax machines and older broadband connections
This ageing infrastructure is being retired and replaced with all‑IP digital networks, where calls are delivered over broadband rather than copper.
Why Businesses Need to Act Now
Openreach has already begun withdrawing legacy services and increasing prices for PSTN-based lines. As demand for migration support increases, businesses that wait risk:
- Phone and broadband services stopping completely
- Alarm, payment, or emergency systems failing
- Higher costs for legacy services
- Limited availability of engineers and longer lead times
In many cases, it already costs more to stay on copper than to move to a modern IP solution.
What Should UK Businesses Do?
The first step is understanding exactly what in your business relies on PSTN – not just phones, but any connected systems or backup lines.
From there, businesses should plan a move to digital alternatives such as cloud phone systems, VoIP, SIP connectivity, and full‑fibre broadband. These solutions not only replace PSTN but also offer greater flexibility, resilience, and scalability.
How Firstcom Europe Can Help
At Firstcom Europe, we help businesses prepare for the PSTN switch-off with minimal disruption. Our experts can audit your existing setup, identify hidden PSTN dependencies, and design a future‑proof communications solution tailored to your business.
Don’t wait until services stop working or costs rise further.
Now is the time to plan your move away from PSTN with confidence.
Book a PSTN readiness check with Firstcom Europe
Speak to our communications experts today
