AudioCodes Mediant 500 MSBR, Руководство пользователя

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Version 7.2 299 Mediant 500 MSBR
User's Manual 19. Quality of Experience
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Green: Indicates bandwidth utilization is within normal range.

Yellow: Indicates bandwidth utilization is encroaching on "total" bandwidth, serving as
a warning (or it could also mean that bandwidth utilization has dropped below the red
state).

Red: Indicates that bandwidth utilization has exceeded total bandwidth.
Bandwidth Profiles let you configure bandwidth thresholds, which when crossed changes
the color-coded state for bandwidth utilization:

Green-Yellow (Minor) Threshold: Lower threshold configured as a percentage of the
configured major (total) bandwidth threshold. When bandwidth goes over the
threshold, the device considers it a Yellow state (Minor alarm severity); when it goes
below the threshold, it considers it a Green state (cleared alarm).

Yellow-Red (Major) Threshold: Upper threshold configured by the major (total)
bandwidth threshold. When bandwidth goes over the threshold, the device considers it
a Red state (Major alarm severity); when it goes below the threshold, it considers it a
Yellow state (Minor alarm severity).
The device also uses hysteresis to determine whether the threshold has indeed being
crossed. Hysteresis defines the amount of fluctuation from the threshold in order for the
threshold to be considered as crossed (i.e., change in color state). Hysteresis is used to
avoid false reports being sent by the device. Hysteresis is used only for threshold crossings
toward a lesser severity (i.e., from Red to Yellow, Red to Green, or Yellow to Green).
Hysteresis is configured as a percentage of the configured major (total) bandwidth
threshold.
The following example is used to explain how the device considers threshold crossings.
The example is based on a setup where the Major (total) bandwidth threshold is configured
to 64,000 Kbps, the Minor threshold to 50% (of the total) and the hysteresis to 10% (of the
total):
Figure 19-5: Bandwidth Threshold Crossings
Table 19-4: Threshold Crossings based on Threshold and Hysteresis
Threshold Crossing Calculation
Threshold based on
Example
Green to Yellow (Minor alarm) The change occurs if the current bandwidth
crosses the configured Minor threshold only
(i.e., hysteresis is not used).
32,000 Kbps
Green to Red (Major alarm) The change occurs if the current bandwidth
crosses the configured Major threshold only
(i.e., hysteresis is not used). 64,000 Kbps