Please tell me how to forward the range for RTP 10000-20000 on my fortigate 60D router?

Question

Asterisk

Hello everyone, such a problem, when I make calls on the internal network, everything works well, everything is well audible, but when a remote employee is connected, a call goes to him, he presses, but nothing is heard in one direction or the other, everything is the same works when he makes a call, the call goes well, but there is no sound.
They say you need to forward the RTP port range, but I can’t figure out how.
Port 5060 forwarded normally, but, I don’t understand these things, tell me who knows?

Answer 1

If you translate to iptables, then you have already done:

And you still need to do:

It turns out that you are already very close.