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SIP trunking connects your existing PBX to the public telephone network over internet. Replace expensive ISDN2e and ISDN30 lines, slash call costs, and be ready for the 2027 PSTN switch-off.
If your existing on-premise PBX phone system works well, you don't need to rip it out. SIP trunks connect your hardware directly to the internet-based telephone network — cheaper calls, more flexibility, unlimited scalability, and full PSTN switch-off readiness for 2027.
Most Birmingham and West Midlands businesses switching from ISDN to SIP save between 40–60% on their monthly phone bills from day one.
SIP calls are significantly cheaper than ISDN. Unlimited UK landline & mobile bundles available.
Direct dial-in numbers for every department, user or team. Local, national, 03 and 0800 numbers.
Add or remove channels instantly from your portal. No engineer visits, no contract amendments.
If your primary SIP trunk fails, calls route to backup carrier automatically. No missed calls.
BT is switching off all analogue lines by 2027. SIP trunks future-proof your phone system now.
Crystal-clear HD voice calls as standard. Better than ISDN in most cases.
Keep all your existing business phone numbers. Zero disruption to customers.
Detailed call stats, duration reports and cost analysis from your portal.
Optional call recording for compliance and training. Stored securely in the cloud.
Competitive international rates to 200+ countries. No per-minute surprises.
Carrier-grade network with redundant routing and contractual uptime guarantee.
Based in Wolverhampton, our team serves businesses across the entire West Midlands and beyond. Local engineers, same-day support, no overseas call centres.
+ all surrounding areas UK-wide · Check your area →
Free compatibility check. Instant provisioning. Beat any ISDN price.