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I have set up a transferCall function with a single destination phone number. Made sure that no other events except the end-of-call report are being sent to the server URL. However, upon asking the assistant to transfer the call, it acknowledges it and a transferCall tool call is made (seen in logs), however, the call immediately disconnects without forwarding it. Most recent call ID: `b9ba9b9c-cce9-4ee2-9c45-86b9774b5ce2` .

Note: The traditional `forwardingPhoneNumber` does work though - however, with that option I am unable to set up custom messages or add more than one phone number to the forwarding list.

<@1230658155500011683>
I'm sorry to hear that you're experiencing issues with the call transfer. Let's try to troubleshoot this together. First, could you please check the logs for any error messages related to the call ID `b9ba9b9c-cce9-4ee2-9c45-86b9774b5ce2`? Specifically, look for any errors that might indicate a problem with handling SIP REFER messages, as this could be a reason for the call disconnecting instead of being transferred.

If you find any error messages, please share them with me so I can assist you further. If there are no error messages or if you're unsure how to interpret them, please ensure that your Vici system is configured correctly to handle SIP REFER messages, as this is necessary for call transfers to work properly.

In case you've already checked and everything seems to be in order, you might want to try omitting the `forwardingPhoneNumber` attribute or setting it to null or an empty string in the API call, as this can sometimes resolve issues with the transfer.

If you continue to face difficulties, please provide me with any additional information you have, and I'll do my best to assist you.

You can continue this conversation by mentioning me in the message.

Got it. Tagging <@&1231325148079194222> for additional help.

<@1230658155500011683> can you try with another number if not done yet because call has been successfully transfered. Mostly it drops if we select phone-call-manager server message but that's not selected so please different number.