I am using FreePBX version 16 and configured SIP trunk with Twilio.
I refered the following doc
https://assets.cdn.prod.twilio.com/documents/TwilioElasticSIPTrunking-FreePBX-Configuration-Guide-Version1-0-FINAL-06122018.pdf
The Phone to test calls is done using webrtc phone provided by FreePBX UCP.
I can make outbound calls through this trunk but not able to make inbound calls.
I am attaching log of twilio call log error for incoming call fail.
The freepbx firewall servers are all disabled.