3CX SIP Trunks – What You Need to Know
3CX SIP Trunks – What You Need to Know
If you’re using 3CX, your SIP provider matters more than you think.
A poor SIP provider leads to:
- call drops
- poor audio
- routing issues
What makes a good 3CX SIP provider?
1. Compatibility
Works cleanly with all 3CX versions.
2. Reliable routing
Multi-carrier networks reduce call failures.
3. Low latency
Better call quality—especially for remote teams.
4. Support
You’ll need help at some point—make sure it’s good.
Common issues with cheap providers
- one carrier = single point of failure
- poor UK routing
- limited support
Best setup for SMEs
- 3CX PBX (cloud or on-prem)
- SIP trunk with unlimited UK calls
- 3–8 channels depending on size
Final thought
3CX is excellent—but only as good as the SIP provider behind it.
