Is your business ready for the ISDN/PSTN Switch Off?

Newsletter, Telecoms

In 2025, the older ISDN and PSTN systems will be switched off, leaving businesses that are still using these older systems at that time without a functioning service. This means that now is the time to start thinking about updating your business phone system to a more modern solution. If you’re unsure what the ISDN switch off is and how it affects your business, keep reading as we explain everything you need to know. 

What is the ISDN/PSTN Switch Off?

The ISDN/PSTN switch off marks the phasing out of traditional telephone networks in favour of more advanced and efficient technologies, primarily driven by the rise of IP-based communication solutions. As of 2025, BT Openreach plans to retire these outdated networks, making way for more reliable and versatile alternatives.

What Does it Mean for Your Business?

The transition signifies the end of conventional telephony services, pushing businesses to embrace modern, digital communication platforms. Failure to adapt may result in operational disruptions and loss of connectivity. That being said, this shift presents an opportunity to enhance communication capabilities, improve efficiency, and future-proof your business.

When is the ISDN Switch Off Happening?

The deadline for the ISDN switch off is set for 2025, but proactive preparation is key. Beginning the transition sooner ensures a smoother migration, preventing last-minute complications and potential downtime.

What Will Happen to Current ISDN/PSTN Infrastructure?

With the switch off, traditional phone lines and equipment will become obsolete. It’s crucial to assess your current setup and plan for the adoption of modern alternatives to maintain uninterrupted communication services.

What Should Businesses Do Next?

If you’re still using ISDN/PSTN infrastructure, your best bet is to liaise with a reputable MSP like One2Call to conduct a thorough assessment of your current communication network. We will develop a migration strategy tailored to your business needs, ensuring a seamless transition to more advanced technologies, such as Voice over Internet Protocol (VoIP) or Unified Communications.

What Are the Alternative Options for Businesses?

At One2Call, we offer a wide range of alternative telecoms solutions for businesses that need to migrate from ISDN/PSTN, including:


How Can One2Call Help Your Business Navigate the Transition?

As your dedicated MSP, One2Call specialises in seamless transitions to modern communication platforms. Our experts will assess your current infrastructure, tailor a migration plan, and implement advanced solutions, ensuring your business remains connected and competitive.

Why Choose One2Call?

One2Call offers unparalleled expertise, boasting a team of seasoned professionals with a collective wealth of knowledge. With a focus on understanding your unique challenges and objectives, we craft bespoke strategies that drive efficiency and foster growth. Our approach is not one-size-fits-all; instead, we take the time to comprehend your business intricacies, ensuring that our solutions align seamlessly with your goals.

We stay ahead of industry trends, offering innovative services that empower your business to thrive. Whether it’s navigating the complexities of the ISDN switch off, implementing advanced communication platforms, or ensuring robust security measures, One2Call has you covered.

What’s more, we understand the importance of balancing efficiency with budget considerations, and our services reflect this. We prioritise affordability without compromising on quality.

In addition to design, supply, support, and management, we  provide comprehensive education and training on how to get the most out of your new telecoms system,  covering everything from the basics to advanced system management.

With One2Call, you can trust that you are in good hands and will have all the resources you need to make the most of your new telecoms system. 

Prepare for the ISDN Switch Off Today

Don’t wait until the last minute to update your phone system. Contact us today to discuss the move from your out-of-date system and ensure that your business is prepared for the changes coming in 2025.

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