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Everything you need to know about the ISDN switch off

BT has announced it will end-of-life its Integrated Services Digital Network (ISDN) by 2025. ISDN is used by over one million UK businesses. In this blog, we will answer the key questions around the switch off and the next steps to a future-proofed solution.

What is ISDN?

The Integrated Services Digital Network is a communication standard that allows you to transmit voice and data over a digital line.

Since being introduced by BT in 1986 connectivity has advanced significantly. The introduction of services like SIP and FTTP has allowed businesses to communicate better than ever before.

ISDN will be switched off in 2025

Why is ISDN being switched off?

As we move into 2020, new digital technologies have been introduced to allow a better connection between people. The ISDN switch off will pave the way for new, better solutions.

When will the switch off happen?

BT won’t be issuing any new orders from 2023 followed by a complete withdrawal of all ISDN2 and ISDN30 lines in 2025, meaning any businesses currently using either solution will need to find a replacement before that time.

How do I know if I have an ISDN line?

If you're a Chess customer and you are unsure if you're using ISDN please contact your account manager or email us and we will get an answer back to you ASAP.

Over 1 million businesses use ISDN

What other options do I have?

If you're making the switch from ISDN you'll need to find a new solution that will allow you to remain connected to your customers and people.

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About the author

Chess

Chess

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.

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