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  • The end for PSTN and ISDN is coming


Its the end for PSTN

The Public Switch Telephone Network (PSTN) is ceasing to operate in December 2025 permanently.

  • Every phone line by that time will have moved to a fully digital network that uses Internet Protocol (IP) across a fibre-based service.
  • This doesn't just affect voice services, it could also mean you need to upgrade your broadband.
  • Any equipment that currently uses the PSTN will cease to function: including alarms, EPOS machines, door entry systems, CCTV, faxes etc.
  • ISDN or Integrated Services Digital Network will also no longer work.

Why’s this happening?

The present day Openreach network is aged and maintaining it in the coming years isn't viable. As it is essentially 20th century technology, traditional PSTN doesnt fit with the demands of 21st century communications.

Phone usage has evolved as more and more people switch to mobile and internet communications. We demand more from phone services than these outdated technologies can deliver.


The switch to digital is inevitable.

Openreach is busy rolling out the full fibre network (fibre to the premises or FTTP) in phases across the UK. They will stop selling traditional phone lines in all exchange areas by September 2023.

What does ‘stop sell’ mean?

Once an exchange area is over 75% full fibre-enabled, they will stop selling traditional phone line services, and copper and fibre to the cabinet (FTTC) broadband, to new and existing customers at fully fibre-enabled premises. Your current service will still work as it does until the switchover but after that it will cease to function so make sure you switch before this happens in plenty of time.

Openreach is enabling full fibre exchanges in a phased approach across the UK. Openreach will add new exchanges to the rollout plan each quarter.

You can read more about the switch-off on Openreach’s website. In Openreach's resources, you can download the list of exchanges Openreach has announced as updated or scheduled for updating so far. A simple way to check if your area is full fibre enabled is to check what broadband is available at you or postcode. You can do this below. 

SEE WHAT BROADBAND SERVICES ARE AVAILABLE IN YOUR AREA BY VISITING OUR BROADBAND PAGE NOW. Or find out more information on what to do next by downloading our fact sheet.


Article by Ashley Harris on: 25/3/22




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