02/09/2026
31 January 2027 is the date BT plans to retire the old PSTN on the Openreach network.
The important question is not simply whether you still have a ‘landline’. It is whether any traditional line still supports calls, alarms, lifts, door entry, payment terminals, monitoring equipment or broadband.
Start by listing every number, service address and connected device. More involved estates need time for suppliers, maintainers, testing and a fallback plan.
Message REVIEW if you would like to discuss a Business Communications Renewal Check.