The UK’s legacy Openreach PSTN network is scheduled to retire on 31 January 2027. Businesses still using traditional phone lines, ISDN or other services that depend on the old network should review what needs migrating before the deadline.
The PSTN switch-off affects any device or service that relies on the traditional copper telephone network — not only desk phones.
Do not cancel your existing phone service before your migration and number-porting plan is confirmed.
Full Migration Guide →The Openreach legacy PSTN and ISDN network is scheduled to retire on 31 January 2027. After this date, services that depend on the traditional copper telephone network will no longer operate.
If your broadband uses FTTC (fibre to the cabinet) with a copper-pair component, this may also be affected. Full fibre (FTTP) connections to the premises are not affected. Check your current broadband technology with your provider.
Yes. Number porting allows your existing geographic and DDI numbers to transfer to a VoIP system. Portability depends on number type, existing provider and service records. Confirm porting details before planning your migration.
Audit all services that use a traditional phone line, including phones, fax, alarms, door entry, payment terminals and any telemetry. Then plan migration for each service. Do not cancel existing services until replacements are tested and ready.
Hosted VoIP and cloud phone systems replace traditional landlines. These operate over your broadband connection and typically offer additional features including apps, call recording, queues and auto-attendant. For businesses requiring maximum reliability, a leased line with VoIP provides the strongest foundation.
Free audit of your current phone lines, broadband and connected devices.