SIP Trunking That Saves Money and Scales Instantly
Replace expensive ISDN lines with flexible SIP trunks. Cut call costs by up to 60%, add channels on demand, and stay connected with built-in failover - all from a trusted UK provider.
Why Businesses Choose Our SIP Trunking
Whether you are replacing ISDN, reducing costs, or building resilience - SIP trunking delivers measurable results from day one.
Cut call costs by up to 60%
Eliminate expensive ISDN line rentals and reduce per-minute call charges with internet-based voice connectivity.
Instant scalability
Add or remove channels in minutes - no engineer visit, no waiting. Scale up for busy periods and back down when things quieten.
Built-in resilience
Automatic failover to backup routes keeps your calls flowing even if your primary internet connection drops.
UK and international numbers
Keep your existing numbers or add local, national, and international numbers to give your business a presence anywhere.
Number porting made simple
We handle the entire porting process. Keep every number your customers know and trust - with a seamless transition.
Works with your existing PBX
Connect SIP trunks to your on-premise PBX, or migrate to our hosted PBX when you are ready. No forced upgrades.
Common Use Cases
SIP trunking works for businesses of every size - from a single office to a nationwide operation.
Replacing ISDN lines
With the UK PSTN switch-off in January 2027, every ISDN line needs replacing. SIP trunking is the modern, cost-effective alternative that gives you more features for less money.
Read about the PSTN switch-offMulti-site businesses
Connect all your offices on one SIP trunk with centralised billing and management. Route calls between sites for free and present a single company number to customers.
Contact centres
Handle high call volumes with elastic SIP channels that scale on demand. No more busy signals during peak periods - every call gets through.
Disaster recovery
Automatically reroute calls to mobiles, other sites, or a cloud phone system if your primary site goes down. Keep your business reachable no matter what.
Getting Started Is Simple
We assess
We review your current setup, call volumes, and bandwidth to recommend the right configuration.
We port
Your existing numbers are ported seamlessly - no downtime, no disruption to your customers.
We connect
SIP trunks are provisioned and connected to your PBX or our hosted platform.
You save
Start benefiting from lower costs, better resilience, and instant scalability.
SIP Trunking FAQs
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