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.
Based in Wolverhampton, our team serves businesses across the entire West Midlands and beyond. Local engineers, same-day support, no overseas call centres.
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.
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 ready for the future your phone system now.
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 Trunk Setup — Add Your Photo
Show your PBX equipment or team at work · 600×500px
SIP trunks are compatible with virtually all modern PBX systems including Cisco, Avaya, Mitel, NEC, Panasonic, Yealink, 3CX, FreePBX and many more. We'll confirm compatibility during your free consultation.
New SIP trunks can be provisioned and live within 24–48 hours of order. If you're porting existing numbers from ISDN, this typically takes 5–10 working days.
A channel equals one simultaneous call. A business with 10 staff but a maximum of 4 people on calls at once needs 4 channels. We'll help you work out the right number during your free consultation.
No — we port all your existing numbers to the SIP system. Your customers will dial the same numbers and won't notice any change.
Click your area for local pricing and case studies.
"Switched our entire office phone system and broadband. The team handled everything, zero downtime. Saving over £200 a month compared to our old BT contract."
"Had failover installed after losing internet for a whole day. Assure X kicks in within seconds. Our team didn't even notice when the main line dropped last week."
"Our dental practice needed reliable phones and fast broadband. Telexico sorted everything in one visit. The AI receptionist handles after-hours calls brilliantly."
Free, no-obligation quote. UK-based support. Same-day response.