@Dr AntonioEvans
It sounds like there might be an issue with the audio connection or configuration in the VAPI setup. Since you've mentioned that the problem occurs with both Twilio and the phone service you purchased from us, and it's consistent across all numbers, we can rule out it being an issue with a specific provider or number.
Here are a few steps we can take to troubleshoot the issue:
1. **Check Audio Configuration**: Ensure that the audio settings in the VAPI are correctly configured to play the greeting message and record the voice.
2. **Test Network Connectivity**: Sometimes, network issues can cause audio problems. Verify that the network connectivity is stable and supports VoIP services.
3. **Review Logs**: Since you mentioned that the logs show the bot saying "hello," but you can't hear it, it's important to review the logs in detail to see if there are any errors or warnings that could indicate what the issue might be.
4. **Permissions and Settings**: Double-check that all necessary permissions are granted for the VAPI to access and use the microphone and speaker on the phone.
5. **Compatibility Check**: Ensure that the VAPI is compatible with the GPT mini cluster and that there are no known issues with this setup.
If you've already checked these and the issue persists, we may need to look into more specific settings related to the VAPI configuration, such as voicemail detection settings, timeouts, and thresholds that could be affecting the call flow.
Since this is a technical issue that might require a detailed investigation, please let me know if you would like me to assist you further with any specific tests or configurations, or if you would prefer to contact support for more in-depth troubleshooting.