A recent survey revealed that 62.1% of UK businesses are still using landlines within their company, and 45% are unaware of the looming Big Switch Off deadline.
In case you aren’t up-to-speed, from December 2025, BT Openreach is closing down all ISDN lines – which will basically mean an end to landlines in the UK and the lines most commonly used to make phone calls across the world.
It’s happening as part of a move to shut down the Public Switched Telephone Network (PSTN) – which ISDN is a part of – because it’s become outdated and been overtaken by newer technologies, such as fibre broadband.
Known as ‘The Great Switch Off’, it is the biggest communications change in a generation. Here are five key ways that businesses could benefit.
Essentially, any company that uses any of the below services will be affected:
For more support discover our free business support helpline and ​speak to one of our Business Advisers by phone, contact form or web chat.
Wondering what you can ask? Our team can help with a range of digital topics
Available Monday to Friday, 8am-6pm, our friendly team are here to provide guidance and support on the topics that matter to your business.