I am making progress, but getting "SIP/2.0 400 Source number is not valid E.164 or anonymous value".
{"voice_connector_id":"vn0p2nvhoewXXXXXXXXX","event_timestamp":"2021-10-28T14:42:42Z","aws_region":"us-east-1","call_id":"25dc141c-b2a0-123a-4db2-0a8fdd303743","sip_message":"SIP/2.0 400 Source...