Openreach ISDN Switch Off

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The Openreach PSTN and ISDN switch off 2025 are you ready?

The UK’s PSTN network will switch off in 2025, affecting PSTN and ISDN lines and all services operating on these circuits. Is your business prepared for the BT Openreach analogue and ISDN switch-off in 2025?

Your business needs to start planning your move to VoIP today because there may be much to consider and change. It is not just about the calls your business makes and receives. You must review everything connected to your PSTN or ISDN lines, like your company’s security systems, door entry systems, and alarms. If your business takes payments using PDQ machines and EPOS systems, these services must also be factored into any change to an All-IP network.

migrating to VoIP

SoGEA broadband is switch off compatible designed for SMEs

Get ready for the full-fibre future of digital Britain with SoGEA broadband, compatible with the 2025 Openreach PSTN & ISDN switch-off. Find out everything you need to know about SoGEA and how it can benefit your business.

Simplified installation: With SoGEA, there is no need for a phone line, which makes the installation process much simpler and faster. Customers only need a compatible router and a broadband plan to get started.

Lower costs: Since SoGEA eliminates the need for a traditional phone line, customers can save on line rental fees and other associated costs.

Improved broadband speeds: SoGEA can provide faster and more reliable broadband speeds than traditional broadband connections. This is because the technology uses a pure digital connection, without any interference from phone signals.

migrating to VoIP
Will every business need to switch to an ALL-IP network?

Yes, we mean every business, including EPOS machines, alarms, door entry systems, and CCTV will be affected.

This sounds drastic why do we need to change?

It’s time to update the UK network with cables in the ground since the 19th century and embrace a digital network.

Is a VoIP system better than ISDN & PSTN?

Yes everyone demands much more today from technology as people switch to mobile and internet comms at lower costs.

2025 is a long way off why upgrade now?

You need to start planning today it’s not just about calls it’s everything connected to your phone lines that will change.

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Horizon Collaborate

We’ve already started moving all our customers to an All-IP network

We’re moving all our customers from the old analogue public switched telephone network (PSTN) to a fully digital network. We’ve already started. We plan to have moved everyone over before Openreach stops the PSTN (and ISDN) service in 2025.

Meet the challenges of a distributed workforce with hosted VoIP

We can help you meet the challenges of a distributed workforce and switch from traditional PSTN and ISDN services to secure, flexible VoIP. business phone systems and group collaboration solutions for teams. From September 2023, Openreach will issue a full ‘stop sell’ of new supply, meaning there will be no new line installation for Single PSTN lines or ISDN.

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Horizon Collaborate

Switch up your old PBX for a cloud hosted system

Get a feature-packed cloud phone system full of hybrid and remote working features compatible with IP desk phones, iOS and Android smartphones, PCs, and laptops to work everywhere.

Why switch to Cloud VoIP

Thirteen reasons why switching from ISDN or PSTN to Cloud VoIP makes sense

Gain business boosting comms & save money

VoIP is a much better alternative to traditional landlines and will be the industry standard from 2025. Here are some of the technology benefits and advantages switching from ISDN to VoIP will give your business:

Reduced Cost

Improved Security



Increased Collaboration

Competitive Edge


Service continuity

Moving to VoIP is a seamless process that won’t leave you without your business phone for days. Acting now, before a huge demand for these services, is advised to ensure a swift and easy deployment.

Keep your numbers

With VoIP, you don’t have to worry about taking out a new number. You can keep your existing one and ensure your customers can always reach you.

Easier to use & manage

VoIP solutions are easy to use and can be deployed on various devices, from your desk phone to your smartphone, PC, or tablet.


Cloud-hosted phone systems allow access to your phone system services as if you were at your desk via smartphones, tablets, laptops, and PCs. Businesses can become more efficient with flexible working, working from home or on the road without missing critical information and calls.

Excellent call quality

The broadband speed is now genuinely fast enough to negate any problems around quality. Hundreds of thousands of businesses rely solely on VoIP to deliver their business voice calls.

Increased collaboration

VoIP allows your teams to work from anywhere with sophisticated, easy-to-use applications and software for Android and iOS smartphones and Windows PCs, Laptops. Work from home in the office or remotely with a true unified communications hybrid work platform.

Greater scalability

Internet-based solutions can be easily scaled up or down depending on your needs. Adding more lines for peak season can be quick and easy for seasonal businesses.

Increased productivity

VoIP solutions can include many more features than your legacy landline so that you can handle calls more efficiently and your business can be more productive.


VoIP solutions can be accessed from various devices, which means you won’t be tied to a desk phone anymore, and you’ll be able to take your calls wherever you are.

Automatic software updates

Benefit from the latest features and functionality delivered to your employees when they are ready. No more waiting for physical phone system updates to use the latest technology to help drive your business forward. Our VoIP phone system platform automatically pushes features, functionality, and security updates to all of your subscribers without any effort by you.

Competitive edge

Adopting VoIP will give your organisation access to greater business features and functionality compared to traditional ISDN PBX phone systems. Intern, this will allow your business to increase its productivity while giving you a competitive edge.


VoIP is a more sustainable business communications approach with less installation, maintenance, and power equipment. Let your company reduce its carbon footprint and Go Green with a sustainable cloud-hosted phone system to help the environment.

Unified communications

Solutions to help you overcome the Openreach ISDN switch-off and future-proof your business

Wide Area Network Services

High capacity, scalable Managed WAN networks capable of supporting your strategic business objectives.

Fast Fibre Broadband

Essential high-speed business fibre broadband for UK companies. Compare our reliable fibre broadband deals.

Hosted Cloud PBX

Find out why more and more businesses are moving away from a standard PBX for cloud hosted telephony.

IoT SIM Data Services

Connect your IoT sensors, connected objects, devices and remote and hybrid teams with 4G/5G LTE.

Business Leased Lines

Dedicated Leased Lines offer the fastest speeds with consistent bandwidth for data hungry businesses.

SoGEA Broadband

Unified communication as a Service delivers critical VoIP, instant messaging & video conferencing in a single platform.

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Serving London with cloud connectivity to run your business

Our focus is on helping London businesses reduce costs and improve their operational efficiency. Whether you are a small or large business, we can offer you the expertise and solutions you need to thrive in London’s competitive business environment.

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