Chapter 9 VDSL Setup
VES1724-56 User’s Guide
121
9.4 VDSL Alarm Template Setup
Alarm profiles define VDSL port alarm thresholds. The device sends an alarm trap and generates a
syslog entry when the thresholds of the alarm profile are exceeded.
IAT Offset Specify the IAT offset from 3 to 511 DMT symbols. This is to determine in which bin
(category) of the IAT histogram the IAT is reported.
There are eight bins (0 to 7) in an IAT histogram. An IAT is logged in bin y (where y can be
from 1 to 6) if the reported IAT value is in the range from (IAT Offset + (y -1) x (2
IATStep
))
to ((IAT Offset - 1) + (y) x (2
IATStep
)). If an impulse event occurs at an interval less than
the specified IAT offset, the IAT will be logged in bin 0 of the IAT histogram. Any IAT
greater than or equal to (IAT Offset + 6 x 2
IATStep
) will be recorded in bin 7.
IAT Step Specify the IAT step from 0 to 7. This is to determine in which bin (category) of the IAT
histogram the IAT is reported.
ISDD Sensitivity Specify the Impulse noise threshold of Severely Degraded symbol Detection from -12.8dB
to +12.7 dB in steps of 0.1 dB. The smaller the value, the more sensitive the signal
against impulse noise. For example, -12.8 dB is more sensitive to the symbol affected by
impulse noise than +12.7 dB.
Add Click Add to save the new settings to the Switch. It then displays in the summary table at
the bottom of the screen.
Cancel Click Cancel to reset the fields to your previous configuration.
Clear Click Clear to clear the fields to the factory defaults.
Name This field displays the descriptive name of a profile.
InpEqMode This field displays the configured upstream and downstream INPEq modes in a profile.
INMCC This field displays the configured upstream and downstream INMCC values in a profile.
IATO This field displays the configured upstream and downstream IAT offsets in a profile.
IATS This field displays the configured upstream and downstream IAT steps in a profile.
Applied Ports This field displays the VDSL port number(s) to which this profile is applied.
Delete Check the rule(s) that you want to remove in the Delete column and then click the Delete
button.
Cancel Click Cancel to clear the selected checkboxes in the Delete column.
Table 42 Impulse Noise Monitor Setup (continued)
LABEL DESCRIPTION
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