Thanks for reaching out! To help diagnose the call forwarding issue, could you let me know if you see any specific error messages or call ended reasons in your Vapi call logs when the transfer fails? This will help narrow down whether the problem is with configuration or the telephony provider.
If you can share the exact error or status, I can provide more targeted troubleshooting steps based on the documentation.
Sources:
- [Vapi Call Forwarding Documentation](
https://docs.vapi.ai/call-forwarding)
- [Debug Call Forwarding Drops](
https://docs.vapi.ai/phone-calling/in-call-control/transfer-calls/debug-forwarding-drops)