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PSTN Switch Off.


The timeline for the PSTN Switch Off.

It’s important to remember that whilst the full switch off is in 24 months, you will have limited time to prepare and will face price rises as VoIP demand grows.

Stop Sell

From September 2023, you will be unable to make any changes to your existing analogue and digital lines, including transfers or additions.

Switch Off

You cannot use your analogue lines, digital lines or equipment, as they will cease working. You must switch before this date.

VoIP (Now)

Switching to a VoIP (Voice Over Internet Protocol) system early will help you avoid price increases and limited engineer availability.

VoIP (Later)

Changing later is achievable, but with engineers facing full demand for their timetables, there is no guarantee you won’t face disruption.


What is PSTN?

PSTN (Public Switched Telephone Network) is an older technology, operating under the same principles of the first ever public phone network. It uses analogue voice data, sent via copper cable phone lines.

ISDN (Integrated Services Digital Network) is a more recent technology from the late 1980s that sends both voice and data services over digital lines at the same time. ISDN was the standard system for years, but now more than ever, companies need high bandwidth to support videoconferencing and cloud-based work-sharing.

In short, PSTN and ISDN lines power a huge range of services, including phone landlines, alarms, CCTV and door entry systems. The switch-off has begun, meaning that all of these services will need to have moved over to Internet Protocol (IP) networks by December 2025.

Why is PSTN/ISDN being switched off?

Openreach state that they have made the decision to switch-off the PSTN and ISDN lines for a number of reasons. The main one is that the demand for using the legacy lines has plummeted in recent years. It is also extremely expensive for Openreach to maintain those legacy lines alongside their other services.

Openreach have been rolling out fibre services for well over a decade now, putting the UK in a good position for the switch. They believe that the UK’s infrastructure is now stable enough to operate purely via digital networks.

What’s it being replaced with?

VoIP. If you are moving over from analogue phones then you will save money from no longer having to pay for expensive analogue line telephone bills. With VoIP you will likely benefit from better call quality too.

VoIP is Trusted by Millions of Businesses.

Take advantage of these key features with BDR Group.

Unlimited Calls

Make unlimited calls on our hosted VoIP to anywhere in the world. Choose a package with suits your business.

Unlimited Software Updates

Keep your system for longer. We update your system and phones with free software updates to get the latest & newest features.

Installed within 1 Month

Once you've signed up and your system has been built, you can expect to go live within just 30 days, with training included.

Premium UK Tech Support

Get expert tech support included. Our technical support team are all in-house and have years worth of experience in IT & Telecoms.

Keep Your Own Number

Keep or change your existing telephone number. Want a new phone number? You can add multiple telephone numbers to your hosted account.

3 Month's Free

Get started with 90 days free. Start using your new hosted business telephone system and get three months completely free.


We've always been
small enough to care,
big enough to cope.

It doesn’t matter if you’re big or small, work in insurance or work in education. We work with any size business from any industry, supporting your team with IT, Energy & other services.


Take the first step to protecting your profit and time with BDR.

Upgrade to VoIP - from just £7.99 p/m

Complete this form and we will contact you to start the process of changing your current PSTN account to VoIP. Not sure if you have PSTN? We’ll tell you for free.

Speak to us within 3 rings.