When I call out from Google Meet to my Vapi Agent (via Twilio Phone #) the Agent can hear Google Meet's automated "You are in a room with one participant" but then can't hear anything else from the room. I've tested the Twilio phone # and validated that it can pass through the Google Meet audio, so there seems to be something between Twilio and Vapi that's causing issues. I'm assuming this might be a Codec issue or something similar. Has this been seen before? If not, are there details on what audio codecs Vapi is using and in what way?

It sounds like you're experiencing a frustrating issue with audio transmission between Google Meet, Twilio, and your Vapi Agent. While there haven't been specific reports of this exact scenario, there are known issues with audio transmission involving Twilio and Vapi that could be relevant. ### Known Issues 1. **Intermittent Call Pickup**: Sometimes, calls may not be picked up correctly, leading to dropped audio. This can happen due to network delays or incorrect configuration settings in Google Voice or Twilio. 2. **WebSocket Connection Issues**: If the connection to the

/listen

endpoint fails, it can lead to significant audio drop rates. Ensuring that the transport connection is established before the listen connection can help. ### Audio Codecs Used by Vapi Vapi uses optimized audio codecs to ensure low latency and high-quality voice communication, but specific codec details (like Opus or G.711) are not explicitly mentioned in the available documentation. The focus is more on optimization strategies and protocol use rather than detailing the audio codec standards employed. ### Troubleshooting Steps - **Network Latency**: Check for any network delays that might be causing issues. - **Configuration Settings**: Review the forwarding settings in Google Voice and Twilio to ensure they are set up correctly. - **Logs Examination**: Look at the logs from Twilio and Vapi for any error messages that might indicate where the problem lies. If the issue persists, it might be helpful to reach out to Vapi support for more specific guidance on codec compatibility and troubleshooting. Let me know if you need further assistance! 😊 Sources: - [Audio Transmission Issues between Google Meet and Vapi via Twilio](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1332133296347549797) - [Audio Codecs Used by Vapi for Voice Communication](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1336685825227755591)

Hey! To help track down this issue, could you share: - The call ID This would really help us figure out what went wrong!

hi I have had this issue too

Lennui a reminder to continue this tick else I have to mark this ticket as solved if I don't get the response within a day.