Avaya SIP Software 3.2 for 1200 Series User Manual Page 99

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Metric Description
Listening R-factor Voice quality metric based on burst packet
loss, transmission delay and burst loss.
MIU Media Information Unit. MIU is a concept
from VQMon. An MIU can be any size down
to a 10 millisecond (8 sample) block. An MIU
means a frame in the i200x implementation.
MOS Mean Opinion Score. A subjective
measurement of the voice quality of a voice
call.
MOS_CQ The VQMon conversational quality MOS
score calculated for a call channel.
MOS_LQ The VQMon listening quality MOS score
calculated for a call channel.
Packet loss rate The percentage of total packets loss versus
packets received.
R-factor A measurement of voice quality based on
network impairments including burst packet
loss, delay and encoding/decoding algorithm
selection.
End of call report
The IP Deskphone with SIP Software sends a report using VQMON Publish message to the
proxy. The proxy redirects the publish ID described within the report. An end-of-call report is
always generated if VQMON is enabled. IP Deskphones with SIP Software do not negotiate
or exchange messages with the device defined using PUBLISH_IP options.
Session interval report
The IP Deskphone with SIP Software can send voice quality reports at time intervals defined
in the device configuration file. The minimum and default time interval is 60 seconds. If the
IP Deskphones with SIP Software send session interval reports more frequently, then a
threshold violation has occurred.
End of call report
SIP Software for Avaya 1200 Series IP Deskphones-Administration January 2012 99
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