SIP Trunking for 3CX
Connect 3CX to a SIP trunk built for your PBX.
Start a SIP.US account and connect your 3CX system without replacing your phone setup. Manage channels and numbers online, then scale service as your calling needs change.
- 3CX-compatible SIP trunking
- Free account in minutes
- Flexible channel capacity
- US48 and Canada calling included
Choose a SIP trunk that fits your 3CX deployment
Keep the flexibility of 3CX while choosing a trunk provider that makes day-to-day phone service easier to manage.
Start with your existing setup
Use SIP.US with your 3CX system and existing internet connection. There is no hardware replacement project to begin.
Scale calls as demand changes
Add or change channel capacity around concurrent calls, then manage service changes through the SIP.US control panel.
Control numbers and trunks online
Manage your trunk, phone numbers, billing, and call detail records from one self-service account.
3CX compatibility with the controls you need.
SIP.US has been tested and certified by 3CX, giving teams a direct path to connect their business phone system with flexible SIP trunk service.
- No SIP trunk setup fee
- Unlimited calling to the US48 and Canada
- Manage numbers and service changes online
Ready to connect your 3CX system?
Create a free account and test your SIP trunk configuration.