Skip to main content Skip to footer

BT ISDN Switch Off - Are You Ready?

BT have announced they will be starting the big ISDN switch off in 2020. Future proofing your business is no longer an option, but a necessity.

BT has announced it will be starting the PSTN and ISDN switch off in 2020 (next year). The gradual phase-out of the older systems will start in 2020 and no new orders will be taken from this point, what’s more, all lines will be completely removed by 2025.

Wondering what to do next? Whatever your question, we’ve got the answers.

What is ISDN?

Integrated Services Digital Network, or ISDN, is the original high-speed internet service. ISDN internet service is basically a telephone-based network system that operates by a circuit switch, or dedicated line. It can transmit data and phone conversations digitally over normal telephone wires.

Do I have ISDN?

Unless you’re using a cloud based solution such as VoIP or SIP it’s likely you are operating via ISDN. You will be able to confirm this by calling us on 0808 231 5373

Do I need to wait until 2020 to switch from ISDN?

Not at all, there are already millions of businesses using cloud telephony to their advantage. Monthly costs for some customers have been reduced by up to 30%. Paired with the flexibility and agility a cloud solution can offer, it makes perfect sense to switch now.

What other solutions do I have?

The good news is, future proofed solutions are waiting for you and they come packed with benefits including cost savings and business continuity.

Cloud Voice is our flexible, scalable and reliable cloud telephony solution and it's available now when you call us on 0808 231 5373.

About the author


Chess is one of the UK’s leading independent and trusted technology service providers, employing 300 skilled people across the UK, supporting over 20,000 organisations.

 By leveraging world-class technology, Chess helps you to connect your people, protect your data, grow your business, reduce your costs and work better together, which means your business, your people and your customers can thrive.

At Chess, we’re passionate about our unique culture and our continuous investment in our people to be industry experts. We’re extremely proud that our people voted us No.1 in ‘The Sunday Times 100 Best Companies to Work for’ list 2018, and we continue to celebrate more than ten years in the top 100.

Speak to a Specialist

You can fill out the form and one of our product specialists will contact you shortly with more information.

Contact Us