I am a newbie to asterisk.
I have an asterisk server that is behind a cisco pix firewall. I have opened up ports udp / tcp 5060 and rtp 10000 - 20000 ports.
When I make a phone call out through the sip provider, I can not hear the other person, but the other person can hear me. Do I need to setup a stun entry for the asterisk server since it is behind the firewall?
How can I fix this issue?