FreePBX/Twilio Outbound Call Issue Resolution

My FreePBX server is already connected to a Twilio Elastic SIP Trunk using a Credential List. Zoiper extensions register without issue and the PJSIP endpoint for Twilio shows “Available,” yet every outbound... (Budget: ₹600 - ₹1500 INR, Jobs: Asterisk PBX, Linux, PHP, SIP, Twilio, VoIP)