Only when the inboundenabled is set to false it would work. I have confirmed the Origination SIP URI is correct. I have deleted all other credentials to avoid conflicts. I have added all of Vapi's official SIP signaling IPs to the IP ACL on my Twilio trunk's Termination settings. https://cdn.discordapp.com/attachments/1228667357849849856/1427307059749060823/image.png?ex=68ee62c9&is=68ed1149&hm=56f42d6b0a87170c4023978bf9bfed8e587ff218f3f57a3efd5a13207331e857&