The Public Switched Telephone Network (PSTN) has been a crucial part of telecommunications for decades, but it is now on the verge of being switched off. This is because many countries, including the UK, are moving towards more advanced and efficient communication technologies like Voice over Internet Protocol (VoIP) and Unified Communications (UC). In this blog, we’ll discuss what the PSTN switch off is, why it’s happening, and how it will affect businesses.

What is the PSTN Switch Off?
The PSTN is the traditional telephone network that uses copper wires to transmit voice signals between two parties. The switch off refers to the phasing out of the PSTN in favor of newer communication technologies. In the UK, the switch off is scheduled to start in 2025 and will be completed by 2027.
Why is it Happening?
The main reason for the PSTN switch off is the outdated technology and the high cost of maintaining it. The PSTN has limited capacity and is not suitable for the modern demands of business communication. The switch to VoIP and UC will provide a more efficient and cost-effective way of communication for businesses.
How Will it Affect Businesses?
The switch off will affect businesses that still rely on the PSTN for their communication needs. These businesses will have to migrate to newer technologies like VoIP or UC to continue their operations. This migration process may require businesses to upgrade their hardware, software, and infrastructure, which could be expensive and time-consuming.
However, the switch off also presents an opportunity for businesses to modernize their communication systems and improve their efficiency. VoIP and UC offer several advantages over the PSTN, such as more advanced features like video conferencing, call recording, and real-time analytics. These features can enhance collaboration, productivity, and customer service for businesses.
What Can Businesses Do to Prepare for the Switch Off?
- Businesses should start preparing for the switch off as soon as possible to avoid any disruption to their communication services. Here are some steps that businesses can take to prepare:
- Conduct a communication audit to identify the PSTN-dependent services and applications.
- Consult with a trusted service provider to assess the suitability of VoIP or UC for the business.
- Develop a migration plan that includes the necessary hardware, software, and infrastructure upgrades.
- Train employees on the new communication technologies and how to use them effectively.
- Test the new system thoroughly before making the switch to ensure smooth transition.