When I use an ATA, I see only the one server in my firewall states.
When I try to use an Asterisk product it connects to one at the sip port (say 5060) but when a call is made I connect out to that same server but another tries to connect back this way...
My firewall states show this way...
65.xx.xx.xx:52854 <- 172.31.125.21:49518
172.31.125.21:49518 -> mypublicip:56758 -> 74.52.58.50:52854
I think this is by design..?.
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