Plantronics + Polycom.
Now together as
I need your help please, We have installed a RealPresence G500, for the firewall rules, as recomanded on the polycom documentation, I configured the Polycom IP as a DMZ host.
The tests results are a bit strange:
Did anyone encountered this kind of issue please?
looks like it is a firewall issue on your side.
Check again firewall settings and try to call from outside the firewall.