January 2027 PSTN Switch-Off: What Services Are Affected & Why You Might Need to Act Fast
The countdown is on. By January 2027, the Public Switched Telephone Network (PSTN) and Integrated Services Digital Network (ISDN) will be completely switched off. While many businesses assume this won’t impact them, the reality is that a wide range of essential services still rely on these ageing networks services that may not have been considered.
What Services Will Be Affected?
The PSTN switch-off isn’t just about traditional landlines. If your business uses any of the following, you could be impacted:
- Business Phone Lines – Any landline-based systems still running on PSTN or ISDN will need replacing with modern VoIP solutions.
- Broadband Connections – ADSL and FTTC (Fibre-to-the-Cabinet) connections rely on PSTN. If your internet connection still depends on these, an upgrade to a full-fibre service will be necessary.
- Security & Alarm Systems – Many fire alarms, burglar alarms, and emergency call systems operate on PSTN lines and will need migration to digital alternatives.
- Payment Terminals – Card machines and other point-of-sale systems often use PSTN connections. Ensuring compatibility with new digital infrastructure is crucial.
- Lift Emergency Lines – Many buildings rely on PSTN for lift emergency communication systems. These will need to be updated before the switch-off to remain compliant.
Why Businesses Need to Act Now
Although the final switch-off is scheduled for January 2027, changes have already begun. Since September 2023, new PSTN-based services can no longer be purchased or modified, which means businesses still relying on these systems are operating on borrowed time. The sooner businesses assess their infrastructure and plan for a transition, the smoother the change will be.
A proactive approach ensures that communication remains seamless and that operations are not disrupted. Leaving it too late could result in unexpected downtime, compliance risks, or increased costs due to last-minute replacements.
How to Prepare for the Transition
Businesses should begin by conducting a full audit of their current telecommunication infrastructure. Identifying any services that rely on PSTN or ISDN is the first step. The next is to explore digital alternatives, such as:
- Switching to a VoIP (Voice over Internet Protocol) phone system
- Upgrading broadband to fibre-based solutions
- Replacing PSTN-dependent security and alarm systems with IP-based alternatives
Partnering with the right provider will make the transition easier, ensuring that the shift to digital is seamless and cost-effective. Planning ahead will not only avoid disruptions but also unlock the benefits of modern, scalable communication solutions.
For businesses looking for expert guidance, exploring tailored solutions now will provide a clear path forward before the 2027 deadline.
Phone: 0345 389 2310
Email: enquiries@tech-ip.co.uk
