Yes please! I'd love your help. Here's my setup: Using Telnyx SIP trunk with VAPI for outbound calls Transfer mode: Warm Transfer - Wait for Operator Destination: regular US phone number (+15585747066) VAPI shows "Transfer Completed Successfully" but call drops immediately Telnyx confirmed 503 from VAPI IP 44.238.177.138 Would love help with SIP headers and transfer method workaround. What do you need from me?