Better tools for interop testing your VoIP provider accounts.
Version 20 Update 8 introduces yet another great new feature with the VoIP Provider Checker for in-depth SIP trunk analysis.
3CX provides a comprehensive list of Supported SIP Trunk Providers. However, if you need to implement a different provider account, the VoIP Provider Checker built into 3CX is an excellent tool for checking compatibility, and for preparing a compatible custom provider template. It delivers deeper insight into the way your VoIP Provider works, eliminating the need for guesswork and giving you targeted information during the different stages of the analysis.
We have prepared some information to guide you through identifying common mismatches with VoIP providers, and suggestions for resolution, including a step-by-step description of what settings can be changed, and how to import your customisations.
How it Works
The VoIP Provider Checker guides you through a 3-step process to guide you through correct configuration:

- Trunk Analysis - confirms working DNS resolution for your provider's Registrar or SIP Server, and also confirms correct authentication for registration-based providers

- Inbound Call verification - analyses an inbound call to confirm correct interoperability, including SIP Header analysis and audio/video Codec matching and sequence

- Outbound Call verification - triggers and analyses an outbound call to check correct functionality, again through correct interpretation of SIP Headers by the provider's SIP server
System Administrator's Benefits
Manual VoIP provider testing is time-consuming, inconsistent, and easy to get wrong. The 3CX VoIP Provider Checker delivers:
- Automation - repeatable, reliable testing with minimal manual intervention
- Speed - faster provider validation and deployment
- Confidence - proof that inbound and outbound calls work correctly
- Troubleshooting clarity - early detection of configuration or provider issues
Whether you’re onboarding a new SIP provider, validating changes, or supporting multiple deployments, the 3CX VoIP Provider Checker saves time and reduces risk.
You can see the VoIP Provider Checker guide here.
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