125 lines
4.1 KiB
XML
125 lines
4.1 KiB
XML
<!-- WSUG Chapter Telephony -->
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<!-- $Id$ -->
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<chapter id="ChTelephony">
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<title>Telephony</title>
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<section id="ChTelIntroduction">
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<title>Introduction</title>
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<para>
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Wireshark provides a wide range of telephony related network statistics
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which can be accessed via the <command>Telephony</command> menu.
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</para>
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<para>
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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
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flow can even be played.
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</para>
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</section>
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<section id="ChTelRTPAnalysis">
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<title>RTP Analysis</title>
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<para>
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The RTP analysis function takes the selected RTP stream (and the reverse
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stream, if possible) and generates a list of statistics on it.
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</para>
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<figure><title>The "RTP Stream Analysis" window</title>
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<graphic entityref="WiresharkTelRTPStreamAnalysis" format="PNG"/>
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</figure>
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<para>
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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,
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etc.
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</para>
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<para>
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Besides the per packet statistics, the lower pane shows the overall
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statistics, with minimums and maximums for delta, jitter and clock skew.
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Also an indication of lost packets is included.
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</para>
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<para>
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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
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options a to export and plot various statistics on the RTP streams.
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</para>
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</section>
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<section id="ChTelVoipCalls">
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<title>VoIP Calls</title>
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<para>
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The VoIP Calls window shows a list of all detected VoIP calls in the
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captured traffic. It finds calls by their signaling.
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</para>
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<para>
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More details are described at the
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<ulink url="&WiresharkWikiPage;/VoIP_calls"/> page.
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</para>
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</section>
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<section id="ChTelLTEMACTraffic">
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<title>LTE MAC Traffic Statistics</title>
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<para>
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Statistics of the captured LTE MAC traffic. This window will summarize the
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LTE MAC traffic found in the capture.
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</para>
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<figure><title>The "LTE MAC Traffic Statistics" window</title>
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<graphic entityref="WiresharkStatsLTEMACTraffic" format="PNG"/>
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</figure>
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<para>
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The top pane shows statistics for common channels.
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Each row in the middle pane shows statistical highlights for exactly one UE/C-RNTI.
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In the lower pane, you can see the for the currently selected UE/C-RNTI
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the traffic broken down by individual channel.
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</para>
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</section>
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<section id="ChTelLTERLCTraffic">
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<title>LTE RLC Traffic Statistics</title>
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<para>
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Statistics of the captured LTE RLC traffic. This window will summarize the
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LTE RLC traffic found in the capture.
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</para>
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<figure><title>The "LTE RLC Traffic Statistics" window</title>
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<graphic entityref="WiresharkStatsLTERLCTraffic" format="PNG"/>
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</figure>
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<para>
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At the top, the check-box allows this window to include RLC PDUs found
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withing MAC PDUs or not. This will affect both the PDUs counted as well
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as the display filters generated (see below).
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</para>
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<para>
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The upper list shows summaries of each active UE.
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Each row in the lower list shows statistical highlights for individual
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channels within the selected UE.
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</para>
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<para>
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The lower part of the windows allows display filters to be generated and
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set for the selected channel. Note that in the case of Acknowledged
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Mode channels, if a single direction is chosen, the generated filter will
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show data in that direction and control PDUs in the opposite direction.
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</para>
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</section>
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<section id="ChTelXXX">
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<title>The protocol specific statistics windows</title>
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<para>
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The protocol specific statistics windows display detailed information
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of specific protocols and might be described in a later
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version of this document.
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</para>
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<para>
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Some of these statistics are described at the
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<ulink url="&WiresharkWikiPage;/Statistics"/> pages.
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</para>
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</section>
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</chapter>
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<!-- End of WSUG Chapter Telephony -->
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