VAPI•3d ago

Errors: call.in-progress.error-providerfault-transport-never-connectedTransport Connection Error

Hi @Vapi Team,

We are seeing lot of errors with this description, but the RCA is neither in the codebase nor the issue is resolved. Please help in fixing this issue soon.

Latest 5 Call IDs for reference:
Call ID: 019b30aa-7f3d-7334-a4f2-83acc106322b
Call ID: 019b30a4-7e15-7663-9000-fd8b0ae01e3b
Call ID: 019b2ff2-ec8f-7117-b299-fcdb4d97b74f
Call ID: 019b2efe-f896-7338-a4fa-15078595ce73
Call ID: 019b2ee9-a30d-7cc1-a978-322326a8b01a

Thanks
Rajesh B K

CC: @Zack Siegel

Vapi Support BotAPP•12/18/25, 1:48 PM

The error call.in-progress.error-providerfault-transport-never-connectedcall.in-progress.error-providerfault-transport-never-connected means the call failed to connect due to a provider-side issue (such as telephony service unavailability).

Actionable next step:

Please check the real-time status of your telephony provider and the Vapi Status Page. If the issue persists, report it to Vapi support with your Call IDs for deeper investigation, as these errors are typically outside your codebase and require provider or platform intervention.

For more details, see the call ended reason documentation.

Source:

Call ended reason documentation

⤵️ Mention @Vapi Support Bot for follow-ups 🐥

Errors: call.in-progress.error-providerfault-transport-never-connectedTransport Connection Error

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