The PSTN switch off: what will replace landline phones?

The Public Switched Telephone Network (PSTN) will be switched off in 2027. The services on this network will no longer work. It is important to prepare your business communication setup with futureproof technologies that do not rely on copper wires.

What are the alternatives to PSTN services?

The PSTN enables both telephony and internet connectivity ser-vices. Learn more about the services affected here.


Telephony alternatives: VoIP


Futureproofed voice communication involves making calls over the internet instead of over copper-based wires. It removes the need for a landline service — instead any device can be connected to a digital phone line.

Making calls in this way uses a technology called Voice over Internet Protocol or VoIP. VoIP works by allowing users to make phonecalls over the internet instead of using analogue phones. All that’s needed is a broadband router and a connected device, which could be a laptop, mobile phone or tablet.

It converts audio into digital data packets and transmits them securely through the internet.

Some additional benefits of VoIP are:

  • Cost-efficiency — VoIP typically costs less than traditional PSTN services, especially for long-distance or international calls
  • Flexibility — you can make and receive calls from anywhere with an internet connection, supporting working from home practices
  • Advanced features — VoIP offers a wide array of features like call forwarding, voicemail-to-email, and video conferencing
  • Scalability — it’s easy to add or remove lines as your business grows or experiences seasonal demand

Learn more about VoIP and the different products available through Crystaline here.

Broadband alternatives #1: FTTP


Fibre to the Premise (FTTP) is a broadband technology that delivers internet connectivity through optical fibres directly to your premises. Unlike FTTC, it uses fibre to make the entire connection, meaning it doesn’t rely on copper PSTN at all. This ensures ultrafast and reliable internet speeds, making it a top choice for businesses with data-intensive operations.

Some of the benefits of FTTP include:

  • Ultrafast speeds — FTTP offers lightning-fast download and upload speeds of one gigabit per second (1 Gbps), ensuring smooth online operations and efficient data transfer
  • Reliability — fibre optic connections are less prone to interference and provide consistent performance
  • Low latency — ideal for video conferencing, online collaboration, and cloud-based applications.
  • Futureproofed — FTTP not only eliminates reliance on the PSTN, but it’s ready to handle speeds of up to 10 Gbps, making it a long-term investment.

FTTP is an excellent choice for businesses that rely heavily on internet services, such as those with heavy reliance on software, data and the cloud.

Learn more about Crystaline’s full fibre services here.


Broadband alternatives #2: SoGEA

Single Order Generic Ethernet Access (SoGEA) is another broadband solution that replaces the PSTN. It provides a fast, reliable internet connection using digital technology.

Traditionally, broadband connections worked by installing a PSTN phoneline, and adding a broadband connection on top of it. SoGEA requires just one connection as it’s a data-only service, meaning it has a dedicated line that only delivers a fibre broadband connection.

Benefits of SoGEA

  • Fast and reliable — SoGEA offers competitive internet speeds of around 80 Mbps and reliability, making it suitable for most business applications
  • Cost savings — by removing the need for a phone line, SoGEA can be more cost-effective
  • Accessible — FTTP is a good solution, but it’s not available everywhere as the infrastructure is not quite nationwide yet. SoGEA can be installed anywhere in the UK, making it significantly more accessible for many businesses

Learn more about Crystaline’s SoGEA broadband packages here.

FTTC: a stopgap solution

Fibre to the cabinet (FTTC) has been a common way of accessing connectivity for some time. It enables connectivity via fibreoptic ca-bles from the telephone exchange to the green, roadside cabinet and then through copper cable to the relevant business. This means the service will also be impacted by the switch off.

With FTTC being a widely-used connectivity service among homes and businesses, this news may be worrying to some. After all, up-grading your broadband network is both a time and cost investment. However, if you currently have FTTC, there’s no need to worry. Your broadband won’t be immediately affected by the switch off, as the copper lines that run from your premise will be kept live until you can access the new full fibre service, even after the switch off date.

Switch-off solutions from Crystaline

Each of these internet-based communications technologies is available through Crystaline. To receive independent, expert advice on the best solution for your business’ requirements, please get in touch below.


Get in touch to discuss your PSTN switch off requirements here

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