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Is Your Business Ready for the PSTN Switch-Off?

by: Alex Barrett

February 23, 2026

If you’re running a busy business, major telecom changes aren’t always front of mind, until they suddenly become urgent. You might have heard about the upcoming PSTN switch-off and whilst January 2027 might sound far away, leaving it too late could disrupt your operations, customer service and bottom line.

The Openreach network is retiring the old copper-based Public Switched Telephone Network (PSTN), with the final switch-off scheduled for January 2027. That means traditional analogue phone lines and ISDN services will no longer be supported in your business. If your business still relies on older phone lines, now is the time to act!

Are Your Phone Lines Relying on Copper Infrastructure?

If you’re using traditional landlines or ISDN circuits, your services are running on technology that’s being phased out soon. After January 2027, these lines simply won’t work.  Many businesses don’t realise how much depends on PSTN. This could be anything from desk phones to alarms, lift lines and even some card payment machines. Identifying what’s connected is the first step in avoiding unexpected downtime.

Rising Costs and Maintenance Issues

As the PSTN network nears retirement, maintaining it is becoming more expensive. Providers are gradually increasing costs and reducing support for legacy services. Older copper networks are also more prone to faults. Crackling lines, outages and repair delays will only become more common as the infrastructure continues to age.

Limited Flexibility for Modern Working

Hybrid working is popular in modern times. If your current phone system ties staff to their desks or doesn’t integrate with mobile devices, you’re already at a disadvantage. Digital voice solutions such as VoIP and cloud telephony allow employees to make and receive calls from anywhere, whether they’re in the office, at home or on the move. Moving away from PSTN isn’t just about compliance, it’s about improving how your team works and moves with the times.

Compatibility Concerns

The switch-off doesn’t just affect phones. Security systems, fax machines, EPOS machines and entry systems might also rely on analogue lines. Without planning ahead, you risk discovering something critical has stopped working when it’s too late. A full system audit will ensure that nothing is missed early on.

Lack of Scalability

If adding new users or lines feels complicated and expensive, your current setup may already be holding you back. Modern cloud-based systems grow with your business. Adding users, redirecting calls or introducing new features can be done quickly, without costly hardware upgrades.

Security Risks

Older phone systems weren’t built with today’s cyber threats in mind. Digital solutions offer stronger encryption, automatic updates and improved monitoring, helping to protect sensitive conversations and data. In a world where security matters more than ever, upgrading isn’t just convenient, it’s responsible.

The PSTN switch-off doesn’t have to be disruptive. With the right support and a clear migration plan, your business can transition smoothly to a modern, reliable communication system. Many organisations find that making the move early brings immediate benefits to their team, including clearer calls, lower maintenance costs, improved flexibility and better integration with existing tools.

If you’re unsure how the switch-off affects your business, now is the time to find out. Book a free, no-pressure call with our team to review your current setup and explore your options before the deadline creeps up.