What Firewall Ports Do I Need Open For Direct Routing?
Microsoft have a handful of destinations your SBCs must be able to reach over the internet.
Your SBC must be able to reach the following IPs on target port 5061/tcp
They must also be able to connect media ports to 22.214.171.124/14 on 49152:53247/udp
In the same manner, Microsoft must be able to reach your SBC SIP Signalling Port and Media Ports you define on your SBC
Mark is an Independent Microsoft Teams Consultant with over 15 years experience in Microsoft Technology. Mark is the founder of Commsverse, a dedicated Microsoft Teams conference and former MVP. You can follow him on twitter @UnifiedVale