Verilink WANsuite 6450, Справочное руководство, Страница: 128 / 205

4-20 W A N s u i t e 6 4 5 0
AISS Sets the Alarm Indication Signal Seconds (AISS) threshold. An AIS is a 1-
second period when unframed all ones are received. The default is 0 seconds
(Disabled).
RAS Sets the Remote Alarm Seconds (RAS) threshold. An RAS is generated by
the terminal equipment when an improper signal is received from the facility
(or upon receipt of unframed all ones). The default is 0 seconds (Disabled).
Reset Timer Sets the Reset Timer threshold. This field is the contiguous number of
seconds that an alarm parameter must be clear before the alarm is reset.
Applicable values range from 000 through 900. A value of “000” means the
alarm will never be reset.
The CBR screen provides the user-activated buttons described below.
CAUTION:
Performance data will be lost upon power cycle or after performing a
Maintenance Reset/Restart.
Performance Screens
The “Performance” prompt near the bottom of the Network screens displays a
Performance 24 Hour screen (Figure 4.17), which provides a summary of the
error events that have occurred during each interval of the past 24 hours. In
addition to the parameters already defined on the "Error Status and Alarm
Thresholds Table" on page 4-18, the following parameters are included on the
Performance screens.
BES Sets the Bursty Error Seconds (BES) threshold. A BES is a 1-second period
during which at least more than one but fewer than 320 CRC6 errors
occurred.
LOFC The Loss of Frame Count (LOFC) represents the number of time a loss of
frame is declared. A loss of frame is declared after 2.5 seconds of continuous
loss of signal or OOF. This parameter is on the T1 Performance 24 Hour
screen only.
CRCES Sets the Cyclic Redundancy Check Errored Seconds (CRCES) threshold. A
CRC is a method of confirming the integrity of received data.
Button Function
Clear Alarms Resets the alarm conditions and counts to zero.
Performance Displays a current count of the number of error events that have
occurred over the past 24 hours and the past 30 days.