Verilink WANsuite 5130 (34-00298.L) Product Manual - Manual (Page 225)

F r o n t P a n e l L C D I n t e r f a c e 5-7
asterisk (*) will appear in front of these numbers when the unit is in alarm for
that parameter.
ES Errored Seconds
−
the number of seconds for which at least one bit error has
occurred. A default threshold for alarm of 45 counts has been set for this
parameter.
SES Severely Errored Seconds
−
the number of seconds for which bursts of errors
have occurred during the last 15 minutes. Often the noise on the T1 link is of
an impulsive random nature. The impulse noise tends to cause several bit
errors in sequence. The line then may become quiet and error-free for most of
the time. This parameter gives a measure of the impulsive error quality of the
line. The threshold for SES is set at 5.
LOS Loss of Signal
−
the number of seconds for which the receiver failed to see
received signal strength above its lower operating limit. The default alarm
threshold for this condition is set at 5.
OOFS Out of Frame Seconds
−
the number of 1-second periods in which a frame
sync loss occurred. Often the receiver will be able to bridge bit errors and still
maintain frame synchronization. This is true since a frame consists of many
bits. The default alarm threshold for this condition is set at 5.
BPVS Bipolar Violation Seconds
−
the number of times the signal failed to observe
the rules for changing the polarity of the logic “1” transmitted signal. The
default alarm threshold for this condition is set at 0. This means that this
alarm is initially turned off.
CSS Controlled Slip Seconds
−
indicates the number of seconds during which a
timing correction was needed due to buffer under-run or overflow. The default
alarm threshold for this condition is set at 5.
RAS Remote Alarm Seconds
−
the number of seconds the RAI/yellow alarm has
been reported from the remote end of the T1 link. The default alarm threshold
for this condition is set at 0. This means that this alarm is initially turned off.
AISS Alarm Indication Signal Seconds
−
the number of seconds AIS has been
received. The default alarm threshold for this condition is set at 0; this means
that this alarm is initially turned off.
UAS Unavailable Seconds
−
the number of seconds for which data was not
available at the T1 port. The default alarm threshold for this condition is set at
0. This means that this alarm is initially off.
NOTICE: Alarm detection and generation are per the guidelines set forth in ANSI
T1M1.3. Other relevant standards include ANSI T1.403-1989 and AT&T
PUB 54016