Call from Michael (ext 293) outbound to 7804697344 at 2017-02-08 15:05:08 or 2017-02-08 15:32:04 (ask michael)
Call originates from 293 > PBX > PFSense > Trunk.


PBX > PFSense (outbound)
10.0.0.39:50776 > 208.68.17.36:17744
  RTP stream okay. Outbound audio good.
208.68.17.36:17744 > 10.0.0.39:50776
  RTP stream okay. Inbound audio good.


PFSense > Trunk (outbound)
68.179.58.65:58308 > 208.68.17.36:17744
  RTP stream bad. 3 packets. No outbound audio.
208.68.17.36:17744 > 68.179.58.65:58308
  RTP stream okay. Inbound audio good.


Upon inspection:

PFSense PCAP:
--> INVITE SDP
  Specifies port 50776
<-- Session Progress SDP
  Specifies port 17744
<-- OK SDP
  Specifies port 17744


PBX PCAP
--> INVITE SDP
  Specifies port 50776
<-- Session Progress SDP
  Specifies port 17744
<-- OK SDP
  Specifies port 17744




FPSense NAT configured to direct all traffic from our trunk provider, destined for "sipports" to the PBX. OUTBOUND from PBX to Trunk on SIPports is set to static port.
PBX is configured to use the same port range as is specified on the firewall.