Navigating the PSTN switch-off

The Public Switched Telephone Network (PSTN) switch-off is fast approaching, with telephony services set to transition to new digital technology that relies on an internet connection by 31st January 2027.

 

Originally due to complete in December 2025, the switch-off delay has given businesses more time to adapt. Yet, many still underestimate the timelines required for network upgrades and the services at risk if the deadline is missed.

 

Now is the time for SMBs to take action, so when the switch-off arrives, they have the right guardrails in place for a seamless, disruption-free transition.

 

 

Retiring legacy infrastructure

As technology adoption has rapidly grown, from the onset of cloud to IoT and AI solutions, it’s become increasingly apparent that PSTN infrastructure is no longer fit for modern internet broadband demands.

 

Over time, ageing copper networks have become difficult to maintain and prone to frequent dropouts, with Ofcom reporting a 45% rise in incidents in 2024. Such levels of instability come at a cost to businesses – research shows internet outages cost the UK economy £1.4 billion in lost work hours in 2025 alone.

 

Today’s SMBs need reassurance that the technology they rely on will continue to operate, and the switchover from traditional Digital Subscriber Lines (xDSL) to Fibre to the Premises (FTTP) promises greater network resilience and reliability.

 

 

Three steps for navigating the switchover

In line with the upgrades, SMBs are required to move all phone systems and connected devices to All-IP alternatives. Those that fail to do this before the deadline risk critical services being lost.

 

The impact could mean downtime, disruption to customer services, reputational damage and even loss of revenue. However, there’s also a hidden cost. Many SMBs are unaware of the number of technologies that rely on PTSN infrastructure, from CCTV to alarms and payment systems, threatening security gaps and even further disruption.

 

With the switchover just on the horizon, SMBs need to plan accordingly through three critical steps: 

1. Understanding how the switch impacts your business. Not all areas have fibre access, and therefore some SMBs will require Single Order Generic Ethernet Access (SoGEA) - a data-only broadband service that uses copper wires without a telephony service. However, this is only an interim solution ahead of planned fibre rollout.
2. Identifying legacy network technology that needs to be updated. Doing this ahead of time means SMBs can prepare for costs ahead of time and upgrade incrementally before the switch.
3. Choosing a trusted networking partner. This will streamline the process, as the right partner will provide guidance around what infrastructure needs upgrading, while ensuring cost efficiency through local availability. 

By following these steps, SMBs will have the support and foresight needed to address any gaps and get their infrastructure switch-off ready - even if they are without fibre access.

 

 

Smart solutions at the ready

As organisations adapt, there are solutions that exist today that are enabling SMBs at all levels of readiness to get ahead of the switch-off. For example, smart routers with both DSL/Single Order Generic Ethernet Access (SoGEA) and fibre ports in a single device deliver advanced, versatile connectivity, supporting a range of devices and ensuring ongoing performance through the transition. When paired with cloud-based management tools, internet service providers can manage such devices centrally, saving valuable SMB IT capacity and enabling issues to be resolved with ease and speed.

 

For those without fibre access, these devices put them ahead of the rollout, ensuring they can take advantage when it eventually arrives.

 

 

The time to act is now

The PSTN switch-off marks a milestone moment for telephony networks as they adapt to a wholly digital infrastructure. As SMBs adopt and rely on more technology solutions, the upgrade promises the reliability and performance they need to move forward.

 

However, to keep enjoying these benefits and ensure business continuity, SMBs must also embrace a more advanced infrastructure - or risk disruption to services. Those that recognise this and who take action now will be the ones to progress with confidence and take advantage of this new era of connectivity. 

 

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Paul Howard is ISP Presales Director at TP-Link UK&I

 

Main image courtesy of iStockPhoto.com and DigitalVision