ISDN and PSTN Switch-Off in 2027

The UK’s telecom network is undergoing a massive change as traditional phone lines are replaced by internet technology.

In 2017, Openreach announced it would not provide ISDN and PSTN services in the UK beyond December 2026 and all users will have to move a VoIP (Voice over Internet Protocol) solution.

Due to this change, ISDN and PSTN products can no longer be ordered, and from January 2027 all ISDN and PSTN services will begin to be phased out.

How will this change affect my business?

Every business in the UK operating on legacy telephone lines and broadband connections will be affected by the change, so it’s time to update your systems.

It’s easy to overlook the vast range of services that rely on legacy systems which will be affected.

These include:

  • Analogue telephone lines (PSTN)
  • ADSL, FTTC and GFAST broadband services
  • Door entry systems / CCTV
  • Burglar alarms / Fire alarms / Panic alarms
  • Lift emergency lines
  • PDQ credit card machines
  • Fax machines

DWD Can Help You Prepare

Thankfully, there are many cheaper, faster, and more reliable alternatives.

Switching to an internet solution such as VoIP, is easier than you think, and this change will bring plenty of benefits to your organisation. A business grade hosted telephone service using VoIP revolutionises business communications. Among the advantages, you will enjoy excellent voice quality, flexibility, scalability, powerful functionality, and the likelihood of paying less.

Here at DWD, we offer market leading solutions. The right service for your business is available now, so get in touch with our experts either by email at 2025@wearedwd.co.uk or by calling 01424 233333.

We will assess your immediate needs and design a solution that works for you and can grow as your business grows. You will keep your existing numbers, and the process of moving is fully managed by us from start to finish.

If you are an existing customer, please don’t panic! If we haven’t already been in touch, we soon will be. We are busy working through our customers’ needs, to ensure you are upgraded and good to go from December 2025. If you want to speak to us sooner, please get in touch at 2025@wearedwd.co.uk or 01424 233333.

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01424 233 333
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