Voice only analysis

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Revision as of 14:46, 1 February 2007 by Rubzzzz (talk | contribs)
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Situation:

Schematic overview of all PC's running which software.

Voice-call between 201 (GSM-codec) and 301 (G711u codec)

  • Traffic to and from Ext. 201 is Green
  • Traffic to and from Ext. 301 is Red
  • Traffic between Asterisk-boxes is Blue in one direction and black in the other

Used filters in I/O-graph:

Filter-Black: ip.src == 192.168.1.101 && ip.dst == 192.168.1.106
Filter-Red  : ip.src == 192.168.1.3   && ip.dst == 192.168.1.106
Filter-Green: ip.src == 192.168.1.189 && ip.dst == 192.168.1.101
Filter-Blue : ip.src == 192.168.1.106 && ip.dst == 192.168.1.101
Filter-Pink : ip.src == 192.168.1.100 && ip.dst == 192.168.1.101

Wireshark-graph G711 G711 traffic Bps oneway-traffic.png

From the graph shown above there can be concluded that the IAX2 traffic (black and blue line) uses less bandwidth than the SIP-traffic (red and green line). We also filtered for traffic between all three SIP-telephones and no traffic was detected.