Verilink FrameStart FSM (34-00299.E) Product Manual - Manual (Page 32)

3-8 F r a m e S t a r t F S M
Figure 3.5 Performance/Summary Screen
In addition to the error parameters found in the Error Status and Alarm
Thresholds Table on page 3-6, the following error parameters are included on
the Network Performance/Summary table:
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.
CRCES Sets the Cyclic Redundancy Check Errored Seconds (CRCES) threshold. A
CRC is a method of confirming the integrity of received data.
Beneath the Performance/Summary table are two buttons: “Performance 24
Hour” and “Performance 30 Day.” Clicking on either of these will display a
detailed summary of error events that have occurred during each 15-minute
interval of the past 24 hours (Figure 3.6) or during each 24-hour interval of
the past 30 days (Figure 3.7). The error parameters are the same as those
found on the Performance/Summary table. Representations of these screens
are provided below.