blistovmhz

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Feb 8th, 2017
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  1. Call from Michael (ext 293) outbound to 7804697344 at 2017-02-08 15:05:08 or 2017-02-08 15:32:04 (ask michael)
  2. Call originates from 293 > PBX > PFSense > Trunk.
  3.  
  4.  
  5. PBX > PFSense (outbound)
  6. 10.0.0.39:50776 > 208.68.17.36:17744
  7. RTP stream okay. Outbound audio good.
  8. 208.68.17.36:17744 > 10.0.0.39:50776
  9. RTP stream okay. Inbound audio good.
  10.  
  11.  
  12. PFSense > Trunk (outbound)
  13. 68.179.58.65:58308 > 208.68.17.36:17744
  14. RTP stream bad. 3 packets. No outbound audio.
  15. 208.68.17.36:17744 > 68.179.58.65:58308
  16. RTP stream okay. Inbound audio good.
  17.  
  18.  
  19. Upon inspection:
  20.  
  21. PFSense PCAP:
  22. --> INVITE SDP
  23. Specifies port 50776
  24. <-- Session Progress SDP
  25. Specifies port 17744
  26. <-- OK SDP
  27. Specifies port 17744
  28.  
  29.  
  30. PBX PCAP
  31. --> INVITE SDP
  32. Specifies port 50776
  33. <-- Session Progress SDP
  34. Specifies port 17744
  35. <-- OK SDP
  36. Specifies port 17744
  37.  
  38.  
  39.  
  40.  
  41. 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.
  42. PBX is configured to use the same port range as is specified on the firewall.
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