SIP Trunking — Modern Lines for Your Phone System
A SIP trunking solution that replaces legacy ISDN with flexible, cost-effective connectivity. Keep your numbers and cut your call costs — set up and supported by Copia.
About SIP Trunking
Copia's SIP trunking solution delivers your phone lines over the internet instead of legacy ISDN — cutting call costs, adding flexibility and future-proofing your voice. Whether you're connecting an existing PBX or a cloud system, we bring the trunks, the number porting and the resilient routing together and support it all, so you keep your numbers, scale channels with demand, and leave ageing ISDN behind.
Everything it does
Lines over the internet
Replace costly ISDN with flexible SIP connectivity.
Keep your numbers
Port existing numbers and keep your identity.
Scales on demand
Add or remove channels as call volume changes.
Lower call costs
Cut the cost of calls and line rental.
Resilient routing
Failover keeps calls flowing if a line goes down.
Works with your PBX
Connects on-site or cloud phone systems.
What it means for your team
Cut costs.
Lower call and line-rental spend.
Stay flexible.
Scale channels with demand.
Keep your numbers.
No disruption to your identity.
Future-proof.
Move off ageing ISDN.
Who it's for
Businesses retiring ISDN · Sites with an existing PBX · Organisations cutting call costs.
Fits the systems you already run
The technology behind our SIP connectivity
SIP Trunking questions, answered
See it working in your environment.
Book a demo or talk to a specialist about SIP Trunking. We'll show you the fit, the rollout and the support behind it.
Friendly local experts · No pressure · We respond within one business day.