I'm experiencing persistent one-way audio with my Twilio SIP Trunk integration. After exhaustive troubleshooting, I've verified ALL configuration matches documentation exactly, but the issue persists. PROBLEM: - Call establishes successfully (status: completed) - But Twilio shows no metrics (all fields show "-" or "null") - Agent cannot hear caller - Tested from multiple sources (personal phone, GHL) - same issue WHAT I'VE TRIED: 1. Enabled Symmetric RTP in Twilio 2. Changed Outbound Transport to UDP in Retell 3. Verified all URIs match exactly 4. Verified credentials match exactly 5. Tested from multiple sources 6. Verified server/webhook is running Thank you