Hi Shubh,
We checked the logs for the failed outbound call attempt and received the following error directly from Twilio:
🔴` 00:22:14:189 Couldn't initiate outbound call transport and queue for call 019e1990-16f1-711d-b79d-8937458e20e3. Error: Couldn't Create Twilio Call. Twilio Error: Voice calling has been disabled for this account`
At this point, it appears that voice calling is currently disabled on your Twilio account rather than an issue with Vapi itself.
Please check your Twilio account settings and billing status to confirm why voice calling has been disabled. In many cases this can be related to:
• Trial account restrictions
• Billing/payment issues
• Voice geographic permissions
• Account suspension or verification requirements
Once voice calling is re-enabled in Twilio, outbound PSTN calls through Vapi should begin working normally again.
Best,
Vapi Support