We've having issues with a lot of silence timeouts over the past two days (very unusual amount), and have noticed most of these calls are also not sending transcripts. Testing the calls ourselves though, the assistant actually does start to engage in a conversation and caller speaks back, but then randomly hangs up and no transcript is recorded at all. Could this attached default setting be causing the issue? Call ID: 8bff7da4-68f6-4baf-ab24-63a5a8292aef Call ID: a1d5bdad-a229-43d0-8c55-55ebc604f269 Call ID: 6c1d170a-c1fe-49b3-9e56-00d2f774efb9 Call ID: f42a2d18-6eb4-48a0-8c4d-b55fd71b761e https://cdn.discordapp.com/attachments/1372505765608296460/1372505766090768456/Screenshot_2025-05-15_at_7.23.20_pm.png?ex=6827051a&is=6825b39a&hm=c6caaa5f2a007d7087c671688f9813137455f9429f9f20080aad72a3f2e63690&

The "confidence threshold" setting at 0.4 can cause transcripts to be filtered out if the transcribed speech falls below this confidence score, which may explain why no transcripts are being recorded for some calls. Try lowering the confidence threshold (e.g., to 0.2) to allow more transcripts through, especially for short or hard-to-transcribe responses.

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// Example: Lowering the confidence threshold
confidenceThreshold: 0.2

This adjustment may help capture more transcripts and clarify if the threshold is contributing to your issue ([source](https://discord.com/channels/1211482211119796234/1332423973715316868)). Sources: - [Vapi Discord: Confidence Threshold Filtering](https://discord.com/channels/1211482211119796234/1332423973715316868) - [Vapi Discord: Filtering and Missing Transcripts](https://discord.com/channels/1211482211119796234/1333510134617604147)

Ok, we can try above but we really need to know if this could be causing the Silence Time Outs though as it's creating very frustrated customers.

Are you using Nova 3?

Hey, Could you please schedule a brief call at your convenience so we can discuss this matter in detail? Kindly use the following link to book a suitable time: .

@Pigeon we're using Nova 2 general en-AU. We switched to this due to the Australia accent and misinterpretations i.e. repeated asking for info, but can switch back to Nova 3 General en if that's causing the issue? @Shubham Bajaj You don't have anything available until 17th June in your calendar, which we cannot wait until to resolve the issue. Can we investigate and resolve sooner please?

We will look into this and get back to you

Hello, I am facing the same issue and using Azure for the transcription.

@Gary Rouch @Haii can you guys share the recent call IDs let me take a look immediately.