Which devices stop working after the PSTN switch off?
Alarms, card machines, CCTV, lifts, fax — anything that dials out over a copper phone line needs attention before 31 January 2027. Here's what to check, device by device.
Alarms (burglar, fire, telecare)
Most monitored alarms rely on an analogue phone line to auto-dial the control room. After the switch-off they need an IP or 4G signalling upgrade — or they will stop reporting.
Read the full guideCard machines & EPOS
Countertop terminals that dial out over a phone line will fail. Modern IP, Wi-Fi and 4G terminals continue to work — but you may need a swap and a new merchant setup.
Read the full guideCCTV monitoring
CCTV footage streams over broadband, but many alarm-linked CCTV systems still confirm incidents via a PSTN dialler. Ask your monitoring provider about IP or dual-path signalling.
Read the full guideLift emergency phones
Lift autodiallers are safety-critical and legally required (BS EN 81-28). They must be replaced with a GSM/4G or approved IP dialler well before 2027.
Read the full guideFax machines & franking
Traditional fax and some franking meters rely on the analogue line. Options include a fax-to-email service, a T.38 fax over IP gateway, or moving to secure email.
Read the full guideConnected devices — quick answers
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- Which of our services or devices currently use a PSTN/analogue line?
- Which of these will stop working after the switch-off?
- What replacement product or connectivity do you recommend for each device?
- Will any hardware need replacing, and what is the lead time?
- What are the one-off and ongoing costs of migrating?
- What date can the migration be completed by, well ahead of 31 January 2027?