The PSTN Switch-Off: Why IoT Is Your Essential Upgrade

12.08.2025

The UK is undergoing a major communications overhaul, with the traditional Public Switched Telephone Network (PSTN) set to be switched off completely by January 2027. This change marks the end of an era for the copper-based analogue phone network that has been in use for over a century. While the "stop sell" of new PSTN-based services is already in effect, the full shutdown will impact more than just landline phones - it will affect a wide range of mission-critical systems that rely on these old lines.

For many businesses and consumers, this includes devices such as:

  • Security and fire alarms
  • Lift emergency phones
  • Payment (EPOS) terminals
  • Health and telecare monitoring devices
  • Utility meters
  • Door entry systems

As the 2027 deadline approaches, the need for a modern, reliable, and future-proof alternative is urgent. This is where IoT connectivity provides a powerful solution.

The Rise of IoT Connectivity as a PSTN Replacement

The Internet of Things (IoT) is a network of physical devices embedded with sensors and software that can exchange data over the internet. By leveraging cellular networks (4G, 5G, LTE-M, NB-IoT), IoT connectivity can provide a robust replacement for systems previously dependent on PSTN lines.

Unlike the ageing copper network, IoT solutions offer:

  • Reliability and Resilience: IoT devices can use multi-network SIMs, which automatically switch to the strongest available signal from any UK mobile network. This provides continuous connectivity, even in the event of a local network outage.

  • Flexibility and Scalability: IoT hardware, such as 4G and 5G routers, can be installed quickly and easily in locations where fixed-line connections are not practical or available. This allows businesses to connect a wide range of devices across multiple sites without the need for extensive cabling or infrastructure.

  • Enhanced Security: IoT connectivity is designed with security in mind, providing features like private APNs and firewalls to protect the data transmitted between devices and networks.

  • Advanced Features: Beyond simple connectivity, modern IoT solutions offer remote management capabilities, real-time data analytics and the ability to integrate with other digital services, leading to greater efficiency and control.

By migrating systems like alarms, payment terminals, and remote monitoring devices to cellular IoT, businesses can ensure continuity of service and unlock new opportunities for automation and data-driven insights.

 

Get PSTN Switch-Off Ready with Our IoT Offering

Don't wait for the 2027 deadline to find a replacement for your PSTN-dependent devices. Start planning your transition now to avoid any disruption to your operations.

Our IoT offering, powered by Anvil, provides a comprehensive suite of solutions to help your business navigate the switch-off. This partnership with Fidelity Group and Anvil will empower you to deploy, scale and manage IoT solutions with ease, reducing complexity and opening new revenue streams in a rapidly evolving market. vM2M enables you to quote, order and manage IoT services effortlessly 24/7, 365 days of the year.

  • Quote – Instantly generate accurate, tailored pricing for IoT solutions.
  • Order – Effortlessly process and activate IoT services with minimal friction.
  • Manage – Maintain full visibility and control over IoT assets through an intuitive, feature-rich platform.

Talk to us today to learn more about our IoT offering and how we can help you future-proof your business. Contact your Partner Business Manager or email us at hello@onecompartners.co.uk.