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BT is switching off the entire UK public telephone network by January 2027. Every business using analogue phone lines, ISDN2e or ISDN30 must migrate to VoIP. Don't leave it until the last minute — migrate now for free with Telexico.
PSTN (Public Switched Telephone Network) is the traditional copper wire phone network that has connected UK businesses and homes since the 1800s. BT Openreach has announced it will switch off the entire PSTN infrastructure by January 2027 and replace it with an all-IP (internet-based) network.
This affects every business in the UK using any of the following: analogue phone lines (PSTN), ISDN2e, ISDN30, FTTC broadband (which requires a phone line), business broadband delivered over copper.
🚨 BT Stop Sell Has Already Started
BT has already implemented a Stop Sell on new PSTN/ISDN products in many exchanges. You cannot get new ISDN lines in most areas. Existing lines will be switched off area by area from now until January 2027.
✅ The Solution Is Simple
Migrate your business phone system to VoIP (Voice over IP) before the deadline. Your calls still work. Your numbers stay the same. You likely pay less. Telexico manages the entire migration for free.
Check if any of the following apply to your business — if even one does, you need to act before January 2027:
Any phone line delivered over a copper wire (not fibre) will stop working when PSTN switches off.
All ISDN services are being withdrawn entirely. These cannot be kept — you must migrate to SIP trunks or VoIP.
Fax requires an analogue phone line. All PSTN-connected fax machines will stop working. Cloud fax alternatives exist.
Older PDQ terminals connected via PSTN will fail. Your payment provider must migrate your terminal.
FTTC broadband requires a phone line for the copper segment. When PSTN switches off, FTTC goes with it.
Digi-communicators using PSTN connectivity in alarm systems will fail. These must be upgraded to IP or 4G.
We audit your existing phone lines, numbers and call routing.
We design your new VoIP system to match or improve on your current setup.
Your existing numbers are ported to the new system. No disruption.
Your team is trained. Old lines cancelled. You're PSTN-ready.
Based in Wolverhampton, our engineers serve businesses across the entire West Midlands. Local knowledge, same-day support, no overseas call centres.
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Free audit of your current lines. No disruption. No cost. Done in days.