Dec 2025
From December, Openreach can give only 90 days’ notice before disconnecting a line. That means businesses need to be ready ahead of time.
The UK phone network is changing. Traditional landline services are being retired and replaced with modern digital alternatives that run over broadband. This change will affect every business using legacy phone lines or systems. But with early planning, you can stay connected and make the switch smoothly.

From December, Openreach can give only 90 days’ notice before disconnecting a line. That means businesses need to be ready ahead of time.
The full PSTN and ISDN switch-off will take place.
Any remaining services on the network will stop working.

Service disruption: If you don’t move to digital services in time, your business phones may stop working. That could mean missed calls, downtime and lost sales.
Operational risk: Shorter notice periods mean less time to prepare. Leaving it late could lead to rushed, unplanned changes that cost more and cause disruption.
Rising costs: As the switch-off approaches, the price of maintaining legacy services will increase. Engineers will be in high demand, and availability will be limited. Planning now helps you avoid these extra costs.
Security vulnerabilities: Old systems are more exposed to cyber threats. Moving to IP-based solutions gives you stronger protection and better control.
Competitiveness: Businesses that delay risk being left behind. Those already using IP-based phone systems benefit from flexibility, advanced features and lower running costs.

Review your current setup and identify any equipment or third-party devices (like alarms, payment terminals or fax machines) that rely on a phone line.
Make sure your broadband is fast and reliable enough to support both internet and phone services. If not, upgrade today!
Contact us for guidance on the digital transition and let us know if you depend on third-party devices/services so that we can help you plan your move and keep downtime to a minimum.
Think about backup power options so you can stay connected during an outage.
SoGEA gives you broadband without a traditional phone line. It keeps your business connected while removing the need for legacy technology.

The following resources provide more information about our products so you can make the best choice for your business.
Visit our Contact Hub to find the information you need from the experts
Zen operates one of the largest independent data networks in the UK.
Our case studies show why we’re the only Which? recommended provider.
Looking for more information about Zen and our involvement in the community? Click here.
Get in touch with our dedicated support team via phone or email.
09:00 - 17:00
Mon - Fri
08:00 - 20:00
Mon - Fri
08:00 - 18:00
Mon - Fri
If you’re unsure how the switch-off will affect your business, or what you need to do next, we’re here to help.

We believe in making Zen a great place to work. Because happy staff provide award-winning service and go the extra mile for our customers every day.