forked from osmocom/wireshark
117 lines
3.8 KiB
Plaintext
117 lines
3.8 KiB
Plaintext
++++++++++++++++++++++++++++++++++++++
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<!-- WSUG Chapter Telephony -->
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[[ChTelephony]]
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== Telephony
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[[ChTelIntroduction]]
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=== Introduction
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Wireshark provides a wide range of telephony related network statistics which
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can be accessed via the menu:Telephony[] menu.
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These statistics range from specific signaling protocols, to analysis of
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signaling and media flows. If encoded in a compatible encoding the media flow
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can even be played.
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[[ChTelRTPAnalysis]]
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=== RTP Analysis
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The RTP analysis function takes the selected RTP stream (and the reverse stream,
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if possible) and generates a list of statistics on it.
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.The ``RTP Stream Analysis'' window
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image::wsug_graphics/ws-tel-rtpstream-analysis.png[]
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Starting with basic data as packet number and sequence number, further
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statistics are created based on arrival time, delay, jitter, packet size, etc.
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Besides the per packet statistics, the lower pane shows the overall statistics,
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with minimums and maximums for delta, jitter and clock skew. Also an indication
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of lost packets is included.
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The RTP Stream Analysis window further provides the option to save the RTP
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payload (as raw data or, if in a PCM encoding, in an Audio file). Other options
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a to export and plot various statistics on the RTP streams.
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[[ChTelIAX2Analysis]]
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=== IAX2 Analysis
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The ``IAX2 Analysis'' dialog shows statistics for the forward and reverse
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streams of a selected IAX2 call along with a graph.
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[[ChTelVoipCalls]]
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=== VoIP Calls
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The VoIP Calls window shows a list of all detected VoIP calls in the captured
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traffic. It finds calls by their signaling.
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More details can be found on the
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link:wireshark-wiki-site:[]VoIP_calls[wireshark-wiki-site:[]VoIP_calls] page.
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[[ChTelRtpPlayer]]
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The RTP Player window lets you play back RTP audio data. In order to use
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this feature your version of Wireshark must support audio and the codecs
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used by each RTP stream.
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More details can be found on the
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link:wireshark-wiki-site:[]VoIP_calls[wireshark-wiki-site:[]VoIP_calls] page.
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[[ChTelLTEMACTraffic]]
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=== LTE MAC Traffic Statistics
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Statistics of the captured LTE MAC traffic. This window will summarize the LTE
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MAC traffic found in the capture.
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.The ``LTE MAC Traffic Statistics'' window
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image::wsug_graphics/ws-stats-lte-mac-traffic.png[]
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The top pane shows statistics for common channels. Each row in the middle pane
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shows statistical highlights for exactly one UE/C-RNTI. In the lower pane, you
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can see the for the currently selected UE/C-RNTI the traffic broken down by
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individual channel.
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[[ChTelLTERLCTraffic]]
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=== LTE RLC Traffic Statistics
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Statistics of the captured LTE RLC traffic. This window will summarize the LTE
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RLC traffic found in the capture.
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.The ``LTE RLC Traffic Statistics'' window
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image::wsug_graphics/ws-stats-lte-rlc-traffic.png[]
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At the top, the check-box allows this window to include RLC PDUs found within
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MAC PDUs or not. This will affect both the PDUs counted as well as the display
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filters generated (see below).
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The upper list shows summaries of each active UE. Each row in the lower list
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shows statistical highlights for individual channels within the selected UE.
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The lower part of the windows allows display filters to be generated and set for
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the selected channel. Note that in the case of Acknowledged Mode channels, if a
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single direction is chosen, the generated filter will show data in that
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direction and control PDUs in the opposite direction.
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[[ChTelXXX]]
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=== The protocol specific statistics windows
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The protocol specific statistics windows display detailed information of
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specific protocols and might be described in a later version of this document.
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Some of these statistics are described at the
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link:wireshark-wiki-site:[]Statistics[wireshark-wiki-site:[]Statistics] pages.
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++++++++++++++++++++++++++++++++++++++
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<!-- End of WSUG Chapter Telephony -->
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++++++++++++++++++++++++++++++++++++++
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