What is PSTN?
The Public Switched Telephone Network (PSTN) is the traditional analogue system used to transmit voice communication through copper phone lines. For decades, it has supported everything from landline voice calls, lift lines and alarm systems to fax machines.
However, with the growth of digital alternatives, PSTN is now outdated and will be retired to make space for newer technologies like Voice over IP (VoIP) and cellular IoT connectivity. As a result, the PSTN switch-off is scheduled for 2027, indicating a complete transition to digital communication systems.
Why is the PSTN switch-off happening?
The move away from PSTN is driven by the need for more efficient and scalable connectivity. Digital transformation, including the rise of VoIP and IoT, offers businesses more flexible and cost-effective alternatives to legacy PSTN infrastructure. VoIP enables voice communication over the internet, while IoT connectivity allows devices to communicate seamlessly, making them ideal for various applications.
With the increased demand for remote monitoring, automation, and real-time data, the transition to digital connectivity is essential to support the future of communication.
Shifting to these newer technologies provides a chance for businesses to improve their overall operations. Cellular IoT connectivity, in particular, due to its flexibility and reliable coverage, offers a strong alternative for critical systems such as:
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Door entry systems: Cellular IoT allows for secure, remote management and monitoring, ideal for multi-location access control without the need for fixed lines.
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ATMs: Cellular networks provide consistent and widely available connectivity, essential for secure transactions and real-time updates in banking applications.
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CCTV: IoT connectivity supports constant video streaming and remote monitoring, even in locations where fixed connections are unavailable.
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Traffic lights: Cellular IoT enables real-time control and status updates, improving traffic management efficiency and reducing downtime.
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Outside broadcasting apparatus: Cellular IoT connectivity ensures increased mobility and reliable data transfer, making it perfect for live broadcasts and field-based operations without the constraints of wired connections.
This transition ensures that these applications continue operating smoothly and reliably after the switch-off.
Key dates for the PSTN switch-off your customers should know about
The deadline for the PSTN switch-off has been extended from December 2025 to January 2027, providing businesses and channel partners more time to prepare for the transition. However, delaying action can lead to disruptions and last-minute challenges.
Download our PSTN switch-off timeline here for the key dates.
The impact on customers
For many businesses, the shift away from PSTN will mean reevaluating and physically upgrading their current communication and connectivity systems to support alternative connectivity methods. Channel partners are crucial in helping businesses understand how their operations may be affected. This includes identifying whether they need voice capabilities, SMS functionality, or consistent power for their applications.
Cellular IoT connectivity can bring new opportunities for businesses, offering tailored solutions that go beyond basic voice services. Cellular IoT provides connectivity solutions which are ideal for applications needing low-power, wide-area coverage, making them perfect for remote monitoring and sensor deployments. With 60% of businesses already making the switch to digital, channel partners can guide the remaining 40% towards solutions that are not only reliable but improve their overall proficiency as a business.
To simplify the transition, Cellhire has developed a plug-and-play tool, making it easy for businesses to upgrade their devices to cellular IoT connectivity. This streamlined solution enables your customers to maintain continuity and operational proficiency with minimal disruption.
Risks of not transitioning
Failing to transition from PSTN to digital alternatives can lead to serious problems for businesses. Without a suitable replacement, devices may face service interruptions, leaving critical applications such as security systems or payment terminals offline. This can disrupt daily operations and lead to a number of problems, including:
- Reputation risks
- Security and data risks
- Health and safety issues
- Lost revenue
As the switch-off date nears, the demand for digital solutions will increase, potentially leading to delays in securing the right equipment or services. By acting now, channel partners can help their customers avoid these risks and ensure a seamless shift to new and secure connectivity solutions.
Steps to prepare for the 2027 PSTN switch-off
To successfully transition away from PSTN, businesses need a clear plan and a trusted partner. Here’s how channel partners can support the process:
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Assess the needs: Identify which services are crucial for the business - voice, data or SMS capabilities. This understanding ensures that the right technology is chosen to match specific needs.
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Educate on alternatives: Inform customers about available options, including VoIP for direct voice replacements and cellular IoT for more versatile, data-centric needs. Cellular IoT offers the flexibility to connect a range of devices, making it suitable for various applications, from street furniture to remote monitoring purposes.
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Leverage the extended deadline: Use the extra time to explore options in depth, work closely with providers like Cellhire, and adopt a consultative approach. Rather than offering a quick fix, this approach focuses on understanding the risks and opportunities, ensuring critical applications remain secure.
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Partner with Cellhire for tailored IoT solutions: Cellhire offers a range of IoT connectivity options that ensure business continuity during and after the switch-off. Our consultative approach means that channel partners have the tools and support they need to align the right technology solution with customer needs.
By planning ahead and choosing a provider that offers a range of connectivity solutions, such as Cellhire, channel partners can capitalise on the PSTN switch-off, ensuring that their customers are not only prepared but positioned to excel in the coming years.
To find out more about our IoT connectivity solutions for the PSTN switch-off or to discover how Cellhire can support your offering, schedule a meeting below with our Head of IoT.
