According to current 3CX documentation, the ports to open inbound didn't change from V18 to V20, in particular Ports 9000-10999 (inbound, UDP) for RTP (Audio) communications.
However, performing a firewall check on V20, the tested range has been increased to 9000-18998. Of course, the firewall check fails unless the range is extended.
Does anybody now what the range 11000-18998 is used for if not for RTP? Or is it just a missed update in the documentation?
https://www.3cx.com/docs/manual/firewall-router-configuration/#h.si5w65z91x7o
However, performing a firewall check on V20, the tested range has been increased to 9000-18998. Of course, the firewall check fails unless the range is extended.
Does anybody now what the range 11000-18998 is used for if not for RTP? Or is it just a missed update in the documentation?
https://www.3cx.com/docs/manual/firewall-router-configuration/#h.si5w65z91x7o
