The Public Switched Telephone Network (PSTN) has been in use in this country since 1876, so it’s understandably grown old and tired, and it’s becoming increasingly costly to maintain. Therefore, it needs replacing with new and modern technology, fit for the digital world we now live in.
As a result, the PSTN will reach end of life in December 2025 and will cease operation after then. However, the PSTN supports several products from Openreach which are sold to businesses including Integrated Services Digital Network (ISDN) lines.
Depending on the size of business you operate, you could have either ISDN2 or ISDN30 lines. However, at the end of December 2025, these fixed lines and services will be switched off and services withdrawn.
Find out more about the switch off here.