What are the benefits of switching from the PSTN?

The Public Switched Telephone Network (PSTN) switch off is just around the corner. BT Openreach has already stopped selling PSTN-based services and in December 2025, analogue phone lines relying on copper wires will no longer work. This means businesses using a PSTN line must switch to a digital phone line or risk being left without a functioning phone system. 

Change can be daunting, especially for small and medium-sized businesses. However, your business has a lot to gain from switching to a PSTN telephony alternative such as Voice over Internet Protocol (VoIP), or broadband alternative such as full fibre.

So, what are the benefits of switching from PSTN services?

Benefit 1 – Saving money

 

PSTN phone lines require buying equipment such as telephone adapters and phone kits, whereas digital voice services such as VoIP can run on any internet-enabled device.

As VoIP digital phone lines operate using your company’s existing internet connection, they are typically much cheaper as there is no need for phone lines to be installed and maintained.

Digital phone lines also offer much lower prices for calls to overseas numbers, ideal for businesses that operate internationally.

Switching from PSTN services can also save businesses money because staff will spend less time navigating clunky legacy systems.

Benefit 2 – Less pressure

Switching to a PSTN telephony alternative sooner rather than later also avoids a last-minute rush in choosing a provider that works for your business before the PSTN switch-off date.

Starting to look before the digital switchover in 2025 means that you have more time to research options such as unified comms (UC), which integrates video, voice and messaging into one platform.

Benefit 3 – Better call quality

When the PSTN was introduced in 1875, the infrastructure allowed for ‘good enough’ voice quality. However, when compared with newer mobile technology innovations, the audio quality from analogue landline phones is poor.

Switching to a futureproofed PSTN alternative allows for clearer communication. In the age of remote and hybrid working, this can help your business:

– Communicate internally
– Deal with suppliers
– Win and retain new business

Some routers also allow you to prioritise video and voice calls over other activities. This goes a long way in ensuring that sound quality is always high.

Benefit 4 – Improved reliability

 

In addition, analogue phone systems rely solely on the PSTN’s copper wires. This means that if the lines go down, your phone systems will not function until they are fixed.

With digital alternatives such as VoIP, you are able to make calls as long as your business has a stable internet connection.

The availability of 5G routers means that if your Wi-Fi connection falters, you can use 5G as a backup. This makes it less likely to have a total phone outage. As a result, switching to a digital PSTN alternative helps make your business more resilient.

 

Benefit 5 – More flexible and scalable 

 

Switching from PSTN services to a digital phone line also increases the flexibility and scalability of your phone system.

With an analogue phone system, you would have to add a new phone line every time your business hires new employees. However, as VoIP can function on any internet-enabled device, this makes it easy to grow your phone system alongside your business.

What’s more, with VoIP, you can easily forward incoming calls to any phone number or device. This means home working won’t get in the way of contacting clients and suppliers.

 

Benefit 6 – Faster internet speeds

 

Although phone systems will be affected first by the PSTN switch off, business broadband will also be impacted.

Both Asymetrical Digital Subscriber Lines (ASDL) and Fibre to the Cabinet (FTTC) broadband services rely on the PSTN’s copper wires.

Although these services won’t be retired until full fibre broadband is available across the UK, it is worth considering digital alternatives now.

Full fibre broadband means your business can benefit from faster speeds. Not only does this make it easier to boost your productivity, but it also futureproofs your connectivity. Having the extra bandwidth allows room for business growth, as well as for integrating future digital technology.

 

Reach out to our team to start your switchover:

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