Hi there. Org id: 83c39998-3bd6-4e1d-b4df-4b00f91cf4ce Call id: https://dashboard.vapi.ai/calls/019d20e0-888a-7000-91f1-f2491080d36d I'm seeing outbound calls from existing assistants and a new one I'v created are calling my phone, but I get silence on the phone, though the call log shows the assistant going through the start message. After about 20 seconds a message pops up on my phone (screenshot attached): "HD Voice call will end. No data received during specified time." No assistant voice, and no background noise, just complete silence on the call. I initially got this on creating a new assistant, but it's also now happening on an assistant that was working an hour ago (e.g. assistant id: 325dbc2b-6340-4547-a553-13479569fe93 ). First started at 17:14 UK Time (call id: https://dashboard.vapi.ai/calls/019d20d6-d86c-7000-8a05-0eee5e5cba12 ) That I can see my repeated "Hello?" in the transcript suggests there is a connection at least, and the problem is on the outbound Vapi => 11Labs voice => Twilio => my phone part of things. Either there's a problem with creating of the outbound data stream part of the call, or nothing is being sent through that outbound data stream. What's causing this problem? https://cdn.discordapp.com/attachments/1486055698310889643/1486055698864406538/vapi-silent-voice-call.jpg?ex=69c41cb8&is=69c2cb38&hm=c47276d250ba2febca1af1f8b6e936598773f9712e80bbf6e8bac95908e80d02&

You’re right @MikeD the call connects but no audio is being streamed, so it ends in silence. Most likely a TTS/streaming failure between Vapi and ElevenLabs via Twilio, especially since it affected a previously working assistant. Try switching the voice/provider — if that fixes it, it confirms the issue.