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hi <@865531204849500190> <@319034765808369666> <@1233640756548206643> 
How can i use `sipVerb: "dial"` to transfer calls to sip number? 
I have this but twilio still throws error because "Refer is only supported on SIP call legs"
"destinations": [
                    {
                        "type": "sip",
                        "sipUri": "sip:+34886189008@eu.sip.ssl7.net",
                        "description": "VoIP studio EU queue",
                        "transferPlan": {
                            "mode": "blind-transfer",
                            "sipVerb": "dial",
                            "timeout": 60
                        }
                    }
                ]