need urgent help because this is affecting my business.
Setup:
- Retell AI agent: Diana V16
- Twilio custom telephony connected
- Business number: +1 (225) 255-2675
Problem:
- My AI answers inbound calls correctly.
- The
transfer_calltool is invoked. - My phone never rings.
- The Call History log returns:
“Transfer call cannot be completed, probably don’t have the permission to perform the transfer.” - I also tested “Make Outbound Call” from the phone number page.
Can someone from Retell please verify:
- My account has permission to use live call transfers.
- My Twilio SIP trunk/custom telephony is configured correctly for transfers.
- Whether there is anything missing on the Retell side that prevents transfers from completing.
This is preventing my business from receiving transferred customer calls.