Controller statistics, Controller statistics on, Mos / r-factor – EXFO EXpert VoIP Test Tools User Manual
Page 71: Rtp statistics
Test Results
EXpert IP
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Controller Statistics
Controller Statistics
Displays the result information for packets that travelled from the
responder to the controller.
Note: The Controller Statistics tab is only available when Responder is selected
under the Call Mode from the Configuration tab.
From the Tests menu, tap Results and the Controller Statistics tab.
MOS / R-factor
EXFO Conversational MOS is the Voice Quality Conversational Mean
Opinion Score (MOS) score for the RTP stream from the Responder to
the Controller.
User R-Factor is the Voice Quality R-factor for the RTP stream from the
Responder to the Controller.
RTP Statistics
Packet Count is the number of good packets received at Controller.
Lost Packets is the number of lost RTP packets going from the
Responder to the Controller.
Late Packets is the number of RTP packets that arrived with a higher
jitter than the acceptable jitter input parameter value. The test discards
all late packets.
Early Packets is the number of packets received and dropped by the
Controller that were too early and could not be buffered within the
jitter buffer.
Total Lost Packets is the total number of RTP packets that were either
lost, early, or late. This value is calculated using the jitter buffer length
input parameter value.