I have a customer that has started being rejected on outbound calls by PEER_RTP_PROFILE_INCOMING_CHECK.
We are fairly new to ThirdLane and this is something I have not seen before. I have them whitelisted in both IPTABLES (Fail2Ban) and the new security section of Thirdlane but this issue persists.
Here is the entry I am seeing in /var/log/rejected_requests.log
Mon May 18 12:15:59 2020 - INVITE - 104-1200 - Yealink SIP-T48S 220.127.116.11 - 18.104.22.168 - firstname.lastname@example.org - Reject by PEER_RTP_PROFILE_INCOMING_CHECK