BT Openreach is stopping, or “switching off” the PSTN and ISDN service in December 2025.
This doesn’t just mean they won’t sell these services anymore. BT Openreach will stop selling ISDN at what’s known as the Stop Sell date at the end of 2023.
Calls will be routed over broadband using Voice over Internet Protocol (VoIP) technology, rather than using “traditional” phone lines.
BT Openreach has already started switching its customers. This began in December 2020 and will continue at various trial sites across the country.
By 2026, then, every UK phone line will be digital.
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