Voice · SIP trunking
Modern call delivery for the phone system they already have.
For customers who want to keep a compatible on-premise or hosted PBX, SIP trunking carries their calls over the internet with the channels and numbers they need — a straightforward way to cut line rental and scale capacity up or down.
Why customers move to SIP
Keep the PBX. Lose the line rental.
Keep the existing PBX
No rip-and-replace. SIP trunking connects to a compatible on-premise or hosted PBX the customer already runs.
Cut costs
Replace legacy ISDN and line rental with trunks delivered over the internet, typically at lower cost.
Scale on demand
Add or remove channels as the business changes — no waiting on physical line installs.
What’s included
Business-grade trunks, numbers and continuity.
SIP trunking pairs naturally with inbound numbers and disaster-recovery routing, so the customer’s calls keep flowing even if a site goes down.
Capabilities
- Channels and number ranges sized to the business
- Bring existing numbers across by porting
- Failover and disaster-recovery call routing
- Works with common on-premise and hosted PBXs
- Provisioning, carrier coordination and support by TeraFi
Add it to your line-up
Sell this under your brand.
Talk to the TeraFi team about becoming a partner, or see the full voice range.