AudioCodes Mediant 800B - Page 331

Version 7.2 331 Mediant 800B Gateway & E-SBC
User's Manual 16. Quality of Experience
Parameter Description
Minor Threshold (Yellow)
minor-threshold-yellow
[QOEColorRules_MinorThreshold]
Defines the Minor threshold value, which is the lower threshold
located between the Yellow and Green states. To consider a
threshold crossing:
 Increase in severity (i.e., Green to Yellow): Only this value is
used.
 Decrease in severity (Red to Green, or Yellow to Green): This
value is used with the hysteresis, configured by the 'Minor
Hysteresis (Yellow)' parameter (see below).
The valid threshold values are as follows:
 MOS values are in multiples of 10. For example, to denote a MOS
of 3.2, the value 32 (i.e., 3.2*10) must be entered.
 Delay values are in msec.
 Packet Loss values are in percentage (%).
 Jitter is in msec.
 Echo measures the Residual Echo Return Loss (RERL) in dB.
Minor Hysteresis (Yellow)
minor-hysteresis-yellow
[QOEColorRules_MinorHysteresis]
Defines the amount of fluctuation (hysteresis) from the Minor
threshold, configured by the 'Minor Threshold (Yellow)' parameter in
order for the threshold to be considered as crossed. The hysteresis is
used only to determine threshold crossings to Green (i.e., from Yellow
to Green, or Red to Green). In other words, the device considers a
threshold crossing to Green only if the measured voice metric crosses
the Minor threshold and the hysteresis.
For example, if you configure the 'Minor Threshold (Yellow)'
parameter to 4 and the 'Minor Hysteresis (Yellow)' parameter to 0.1
(for MOS), the device considers a threshold crossing to Green only if
the MOS crosses 4.1 (i.e., 4 + 0.1).
Major Threshold (Red)
major-threshold-red
[QOEColorRules_MajorThreshold]
Defines the Major threshold value, which is the upper threshold
located between the Yellow and Red states. To consider a threshold
crossing:
 Increase in severity (i.e., Yellow to Red): Only this value is
used.
 Decrease in severity (Red to Yellow): This value is used with the
hysteresis, configured by the 'Major Hysteresis (Red)' parameter
(see below).
The valid threshold values are as follows:
 MOS values are in multiples of 10. For example, to denote a MOS
of 3.2, the value 32 (i.e., 3.2*10) must be entered.
 Delay values are in msec.
 Packet Loss values are in percentage (%).
 Jitter is in msec.
 Echo measures the Residual Echo Return Loss (RERL) in dB.
Major Hysteresis (Red)
major-hysteresis-red
[QOEColorRules_MajorHysteresis]
Defines the amount of fluctuation (hysteresis) from the Major
threshold, configured by the 'Major Threshold (Red)' parameter in
order for the threshold to be considered as crossed. The hysteresis is
used only to determine threshold crossings from Red to Yellow. In
other words, the device considers a threshold crossing to Yellow only
if the measured voice metric crosses the Major threshold and the
hysteresis.
For example, if you configure the 'Major Threshold (Red)' parameter
to 2 and the 'Major Hysteresis (Red)' parameter to 0.1 (for MOS), the
device considers a threshold crossing to Yellow only if the MOS
crosses 2.1 (i.e., 2 + 0.1).