24/09/2025
PSTN Switch-Off 2025: What UK Businesses Must Do to Keep Fire & Security Systems Online
The UK’s traditional Public Switched Telephone Network (PSTN) will be permanently switched off by BT Openreach in December 2025. Analogue and ISDN phone lines will no longer operate, affecting any system that still relies on them.
Why This Matters?
Why This Matters?
Fire alarms, intruder systems, life emergency phones, access control intercoms and CCTV monitoring often use PSTN lines for signalling and remote management. When the network is withdrawn, these services will stop working unless upgraded.
Key Risks
- Lost Alarm Signalling: Monitoring centres will no longer receive alerts.
- Insurance & Compliance Issues: Systems that fail to report alarms may breach regulations and invalidate cover.
- Operational Downtime: Critical building systems could be left without a communication path.
Upgrade Options
- IP Communicators: Send alarm data via broadband or fibre.
- Dual-Path Signalling: Combine IP with 4G/5G cellular for redundancy.
- Remote Monitoring Integration: Ensure compatibility with your alarm receiving centre.
Steps to Take Now
- Audit Existing Lines: Identify every system still using analogue or ISDN.
- Plan Migration: Choose IP or cellular hardware and schedule installation.
- Test & Certify: Verify new connections with your monitoring provider and document compliance.
Why Choose Sygma Fire, Security & Electrical?
- Experienced in fire, intruder, access and CCTV systems.
- Full service from site survey to installation.
- Tailored solutions to meet insurance and regulatory requirements.
Act Before the Deadline
The PSTN switch-off is irreversible. Secure your fire and security communications now to avoid disruption and potential non-compliance.
Phone:0800 043 6728
Email: info@sygma.co.uk