ISDN Switch Off January 2027

With Sangoma you have options

It’s the biggest and most important modernisation of the public phone network ever, and your business needs to ACT NOW to ensure a smooth transition

Background to the Switch Off

In 2017 BT announced it intended to Switch Off ISDN and PSTN. From September 2023 new ISDN lines will not be available for purchase. Businesses must make alternative plans and migrate all ISDN / PSTN channels or they will be without a telephony service after January 2027. All equipment that currently uses the PSTN will stop working: such as alarms, elevator phones, EPOS machines, door entry systems, CCTV, faxes …

What Do You Do Now?

Firstly don’t bury your head, doing nothing is NOT an option. The Switch Off WILL happen; secondly don’t panic the transition to IP telephony is very straight forward with Sangoma. We are trusted advisors to many businesses and have helped them find the solution that is right for their business; talk to us about how we can help you.

ISDN Switch Off Overview

There are four options, all suitable for businesses ranging in size from as few as 3 employees to many thousands of employees. All you have to do is decide which is the best fit for you, and we’ll help you do the rest…

Option 1: Adapt What You Have

Extend the life of your current phone system by connecting it to the internet. This is simply done by adding hardware known as a VoIP Gateway and a link known as a SIP Trunk, which uses your existing Internet connection. It’s easy, affordable, and users notice no difference – no new cables, no new handsets, no new training.

Option 2: Upgrade What You Have

Replace your installed on-premise system with the latest feature-rich digital technology known as a Unified Communications (UC) Platform; this can be installed on your site as hardware or software, fully under your control. All your telephony now on the internet, but also seamlessly aligned with your email, messaging, and chat applications via an easy-to-use, easily accessible user interface. Plus, it can all be replicated on employees’ desktop computers, laptops and mobile devices for super-convenience.

Option 3: Migrate To The Cloud

Follow hundreds of millions of organisations worldwide by replacing your on-premise system with a powerful, cloud-powered Unified Communications (UC) solution. All your calls, email, chat, and messaging now via the internet; zero line rental; limitless ability to add the latest new features at will; and pay monthly, only for the services you use.

Option 4: Adopt A Hybrid Solution

Download our guide to the options available

Trusted by businesses across industries

See how businesses of every size use Sangoma to stay connected.

Education

Northgate Academy Upgrades to Sangoma Cloud UC and Cuts Costs by 20% with ISDN Switch-Off

HEALTHCARE

Powering a 3,000-User UC Transformation for a Leading UK NHS Trust

ENTERTAINMENT

The National Coal Mining Museum Converts Their Outdated Phone System Into a Modern, Reliable Solution with Sangoma UC

See all case studies

Webinar Recording: “How to Prepare for the Great British ISDN Switch Off”

In January 2027 BT is switching off the UK’s PSTN and ISDN networks for good. In this webinar Sangoma explains what this means for businesses still using these voice services and how you can prepare for the transition.

Play Webinar