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23-02-2021. Posted by Admin

The Great BT Switch Off

The Public Switched Telephone Network (PSTN) will reach the end of its life in December 2025

If you currently use an ISDN line (phone lines, alarm or telemetry devices) this will apply to you as ISDN is an ageing technology that BT plans to replace with digital alternatives such as VoIP (Voice over Internet Protocol) systems.

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