Specifications

IPmux-4 Installation and Operation Manual Appendix E Parameters and Screens
Performance Monitoring Parameters E-27
Table E-16. Alarms and Statistics (Cont.)
Alarm Failure Comments Valid Modes
BES Bursty Errored Seconds
(Errored Second type B)
The number of seconds with from two to 319
CRC error events with no AIS nor SEF
(Framing Bit Errors) error detection.
Not applicable if Line Type is set to Unframed
T1-ESF or
E1-CRC4 modes
DM Degraded Minutes A Degraded Minute is calculated by collecting
all of the available seconds, subtracting any
SESs and sorting the result in 60 second
groups.
A Degraded Minute is a 60 second group in
which the cumulative errors during the
60-second interval exceed 1x10
-6
.
T1-ESF or
E1-CRC4 modes
ES Errored Second: If any
error occurs during one
second.
Any second containing the following error
events:
CRC
SEF (OOF)
AIS (T1 only).
If SES is also active (see below) ES runs for 10
seconds and then stops (T1 only).
Alarm Failure Comments Valid in X only
SES Severely Errored Seconds. Any second containing the following errored
events is counted as severely errored seconds:
For E1/T1:
If 320 or more CRC error events
One or more SEF (OOF) events
One or more AIS events occurred (for T1
only).
UAS Unavailable Seconds: Activated when there are 10 consecutive SES
occurrences and
Deactivated as a result of 10 consecutive
seconds without SES.
LOMF Loss Of Framing sequence in Time Slot 16 E1 models only
E1 CAS mode
only
➤
To view Alarms and Statistics for next interval:
• Press N for Next Interval.
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