The BT PSTN & ISDN Switch-Off – How Vaughan Data Systems Can Help
Future-Proof Your Business Phone System with 3CX
BT is retiring the UK’s traditional phone network, meaning PSTN and ISDN phone lines are being switched off. If your business still relies on analogue or ISDN services, action is required to avoid disruption. Vaughan Data Systems can help you transition smoothly to a modern 3CX phone system, ensuring your communications remain reliable, flexible, and cost-effective.
When Is the Switch-Off Happening?
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Stop-sell already in place – new PSTN/ISDN lines are no longer available
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Migration strongly recommended by mid 2026
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Final switch-off: January 2027
Moving early reduces the risk of faults, downtime, and rushed migrations as deadlines approach.
Why Choose 3CX?
Fully Compatible with BT’s Digital Network
3CX is a VoIP phone system designed for the All-IP world, working seamlessly over fibre or broadband connections.
Reduce Call and Maintenance Costs
With SIP trunks and internet-based calling, businesses can significantly lower call charges and eliminate expensive ISDN line rental and maintenance fees.
Support Remote and Hybrid Working
3CX allows staff to make and receive calls from:
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Desk phones
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Mobile apps
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Web browsers
Perfect for home working, multi-site offices, and mobile teams.
Advanced Features Included
3CX includes enterprise-grade features as standard:
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Call queues and IVR
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Voicemail to email
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Call recording
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Presence and status
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Audio and video conferencing
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CRM and Microsoft 365 integration
Scalable and Easy to Manage
Add or remove users easily as your business grows. Manage the entire system through a simple web-based portal with real-time reporting.
A Smooth, Managed Migration
Vaughan Data Systems handles the entire transition from BT PSTN or ISDN to 3CX, including:
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Assessment of your existing phone lines and services
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System design and deployment
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Number porting and configuration
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User training and ongoing support
We ensure minimal disruption and a seamless move to digital telephony.
Get Ready for the BT Switch-Off Today
The PSTN and ISDN switch-off is not optional—but upgrading your phone system is an opportunity to improve how your business communicates.
Contact Vaughan Data Systems today to discuss how a 3CX phone system can future-proof your communications and keep your business connected beyond the BT switch-off.
