PSTN switch off: What you need to know
What does the PSTN switch off mean for your business? Imagine if you couldn’t make calls, use the internet, process payments, manage security systems or raise an alarm in an emergency.
This could be the reality for your business when BT Openreach retires the Public Switched Telephone Network (PSTN) in January 2027.
The switch off will stop many legacy systems from working. This includes PSTN-enabled phones, broadband, alarms, lifts and payment terminals.
Services that will be switched off include:
- Private Branch Exchange (PBX) phone services
- Integrated Services Digital Network (ISDN) lines
- Asymmetric Digital Subscriber Line (ADSL) broadband
If your business relies on any of these technologies, contact your service provider. If so, you need to switch to a PSTN alternative now to prevent disruption.
When is the PSTN switch off?
The final switch off will take place on January 31, 2027 but the recommended switch deadline is much sooner.
BT encourages everyone to upgrade to digital phone lines by the end of December 2025 to avoid disruptions.
The process of assessing your systems and upgrading each one requires careful consideration, so waiting until the last second risks running out of time.
For more information about PSTN switch off dates, why PSTN lines are being withdrawn and which technologies will be affected, see our guide to the PSTN switch off explained.
Why switch from the PSTN now?
These are the key reasons you should transition to digital lines well before 2027:
1) Safeguard your communications
The PSTN network is already prone to issues due to its aging copper wires.
Switching as soon as possible means you don’t have to worry about sudden outages and performance issues.
2) Expand your capabilities
Digital phone lines using Voice over Internet Protocol (VoIP) give you access to modern features such as video calling, call forwarding and mobile integration.
Additionally, internet-based services often provide better voice quality and faster connections.
Your competitors that have made the switch to digital systems are already seeing the benefits of these features. Don’t get left behind.
3) Save money and stress
If you wait until the last minute to switch, you’re likely to end up paying a premium to prevent any continuity issues.
Plus, digital phone lines are often cheaper to run. If you invest in the equipment now, you’ll guarantee a smooth transition and potentially save when it comes to operational costs.
4) Protect your business
Many digital systems come with encryption, access controls and monitoring features as a standard.
By holding onto PSTN-enabled systems, you could be leaving your business more vulnerable to cyberattacks.
How to switch to digital phone lines
When switching to digital phone lines, one of the most important steps is to audit your existing setup. This will help you to assess which of your systems rely on PSTN lines and what alternatives are available.
For more information on this, visit our guide on how to prepare for the PSTN switch off.
Crystaline can complete the audit for you and offer expert guidance to help you choose the most appropriate digital solution for your business needs.
To start your digital switchover, book a free consultation with our team.
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