In the UK, the traditional Public Switched Telephone Network (PSTN) and ISDN lines are being phased out. By 2027, these analogue landline systems will no longer work. For businesses that still rely on fixed lines for calls, alarms, or payment systems, this change may sound daunting. But in reality, it presents an opportunity to modernise communications and unlock more reliable, flexible solutions.
In this article, we’ll explain what the 2027 landline switch-off means, why it’s happening, and the alternatives available to ensure your business stays connected.
The PSTN has served the UK for decades, but the infrastructure is outdated and costly to maintain. Copper-wire technology simply cannot keep pace with the demands of modern communication. As a result:
Openreach and BT are retiring PSTN and ISDN lines by 2027.
All services will move to internet-based alternatives.
This change aligns the UK with a global shift toward digital telecoms.
The aim is to replace an ageing system with one that is faster, more reliable, and better suited for the future of business.
If your organisation currently relies on landlines, several areas may be affected:
Analogue phone calls: Traditional desk phones will stop working unless moved to a digital system.
Devices on PSTN lines: Alarm systems, lift phones, fax machines, and card payment terminals may need upgrades.
Customer communication: Any disruption to phone lines risks client frustration and lost opportunities.
The good news is that solutions are already available and widely adopted.
VoIP allows phone calls to be made over the internet instead of copper wires. It is flexible, scalable, and cost-effective, with features such as:
Call forwarding and voicemail-to-email.
Video conferencing and team messaging.
Integration with CRM systems for streamlined workflows.
Learn more about our Business VoIP Systems.
VoIP depends on strong internet connectivity. For many organisations, upgrading broadband will be part of the transition. Business-grade broadband provides the speed and reliability required to support voice and data services without interruption.
Explore our Business Broadband options.
Business mobile phones can act as both primary communication tools and backup during broadband outages. With mobile integration, staff can receive office calls on their mobiles, ensuring they remain reachable wherever they work.
Discover our Business Mobile solutions.
Security alarms, payment terminals, and monitoring systems that once relied on PSTN lines will need alternatives. Many can now connect via IP or cellular networks using IoT SIM cards, offering reliable, secure connectivity without fixed lines.
Learn more about IoT SIM Cards.
Although 2027 may seem far away, waiting until the deadline poses risks:
Avoid disruption: Transitioning early ensures business continuity.
Spread costs: Phasing in upgrades prevents a sudden financial burden.
Unlock benefits: Many businesses already find VoIP cheaper and more feature-rich than landlines.
The sooner you make the change, the sooner you can take advantage of these improvements.
Audit your current setup: List all landlines and devices connected to PSTN.
Check broadband readiness: Ensure your internet can support VoIP and other digital services.
Plan for hybrid solutions: Use VoIP as your core system, supported by mobile and IoT where needed.
Choose a trusted provider: Work with experts who can manage the transition smoothly and advise on future scalability.
By 2027, landlines in the UK will be switched off. For businesses, this marks the end of an era—but also the start of a better, more flexible communications landscape. With VoIP, business broadband, mobile solutions, and IoT connectivity, organisations can stay connected, reduce costs, and future-proof their operations.
At Fidelis Plus, we help businesses prepare for the switch-off with tailored, reliable solutions.
Contact us today for expert guidance on transitioning from landlines to modern alternatives.
