VoIP Ethernet Capture on FreeSBC and ProSBC

Revision as of 21:07, 19 December 2019 by Luc Morissette (talk | contribs) (Updated for ProSBC)
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Applies to version(s): v3.0, v3.1

Capturing VoIP and Ethernet traffic

  • Connect to the SBC using a ssh connection
  • Start tbx_cli_tools_remote (type "tbx_cli_tools_remote")

The following is displayed:

Available remote hosts to control (TBX_GW_PORT=12358, local IPs / Press corresponding letter to
   a : TB016634.tbrouter
   b : TB016635.gateway
   c : TB016635.logtrace
   d : TB016635.stream_server
   e : TB016635.tboam_app
   f : TB016635.tbrouter       <------------tbrouter
   g : TB016635.tbsnmpagent
   h : TB016635.tbsyslog
   i : TB016635.tbuctwriter
   j : TB016635.toolpack_engine
   k : TB016635.toolpack_sys_mgr
   l : TB016635.web_server
  • Connect to the tbrouter application
  • Start capture using the 'p' key (lowercase p), leave default parameters and press 'enter'
  • Stop capture using the 'p' key (lowercase p)

Retrieve VoIP captures

VoIP capture files (pcap/Wireshark compatible) are locate here:


To download the voip capture file, use sFTP on the management port. This can be done on Windows using tools like Filezilla or WinSCP. Note: There can be multiple capture files per capture session (for example, on systems with 10Gbps network devices, because Ethernet packets on these devices are spread to multiple packets processing/capture cores)