In January 2027, the UK’s entire Public Switched Telephone Network (PSTN) — including ISDN lines — will be switched off permanently.
This change affects far more than just landline phones. Many businesses still rely on PSTN-connected systems without realising it.
What’s Affected?
If you still use analogue phone lines, services like these may stop working:
- Traditional desk phones (not using VoIP)
- Alarm and security systems
- Lift emergency lines
- Card machines and EPOS systems
- Fax machines
- Door entry and intercom systems
- Older broadband (like ADSL)
What’s Changing?
The UK is moving to a fully digital infrastructure:
- VoIP phone systems will replace landlines
- Fibre broadband will replace copper-based internet
- Devices will need to be IP-compatible rather than analogue
This shift brings benefits like better call quality, remote working flexibility, and often lower costs.
Why You Shouldn’t Wait
Even though the deadline is 2027, services are already being withdrawn in some areas. Waiting could lead to:
- Unexpected service outages
- Limited engineer availability
- Higher costs for last-minute fixes
- Missed calls or payment failures
Planning early helps avoid disruption and gives you more choice.
A Quick Readiness Check
Ask yourself:
- Are your phones still on traditional landlines?
- Do your alarms or lift systems run through PSTN or ISDN?
- Are you still using ADSL broadband?
- Do you know your local stop-sell date?
If you’re unsure, it’s time to review your setup.
What You Can Do Now
We’re helping businesses assess and prepare for the switch-off with:
- A free 15-minute consultation
- A clear plan to move to digital systems
- Support throughout the transition
Don’t Get Caught Out
Many businesses won’t realise they’re affected until it’s too late. By acting now, you stay ahead of the curve, with minimal cost and no disruption.