Join and install 3cx for a last days. and integrate with Twilio. Now inbound is working. but outbound is not working. 1. Already checked the firewall - all are good 2. Using Twilio SIP trunk and no issues so far 3. When outbound called made, it rings one to two times and disconnected. 4. Outbound rule - already set up one. set prefix 1-9 only. 5. Call Logs: Most of them just shown no answer.