Man, I'm starting to lose it. For kicks, I blew out all the NAT rules, save for:
chain=srcnat action=masquerade src-address=192.168.201.0/24
dst-address=0.0.0.0/0 out-interface=ether1 log=no log-prefix=""
Then I went to Filter Rules and disabled all them.
So effectively (by my fractured logic
) there should be no Filter Rules or NAT rules enabled. I have then made a test inbound call and I still do not have 2 way audio...inbound UDP 10020-10531 packets are not making it to the PBX from the SIP provider.
Where else in the RB2011 would incoming traffic be blocked? I have not done a whole lot of config changes on this setup, so it isn't exactly super densely programmed.