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Provisioning
DS1 BER (DBER) Option. The DS1 BER alarm occurs when any of the DS1 or DSX-1 performance
monitoring parameters listed in
through 11:59:59 PM. These thresholds correspond to a 10
or when Master Clear is selected.
HDSL4 BER Threshold (HBER) Option. The HBER option permits the monitoring of loop integrity and
reporting of alarms when excessive errors are detected. The PM primitive used for this purpose is the CRC
checksum performed on the HDSL4 frame for both directions of transmission. It is, therefore, called a block error
rate rather than the bit error rate associated with the DS1 interface. The CRC errors and counts are displayed on
the Monitor screen for both the H4TU-C and H4TU-R. The HBER option allows an alarm to be generated if the
total number of CRCs at either the H4TU-C or H4TU-R exceeds the selected BER threshold during the last
1-minute interval.
•
HBER option = 1E-6. Alarm is generated if CRC > 93
•
HBER option = 1E-7. Alarm is generated if CRC > 9
Once initiated, the HBER count clears when the CRC count drops below the selected threshold. Selecting NONE
inhibits this alarm.
18
Table 7
exceed the counts shown for the 24-hour period between 12:00:00 AM
Table 7. DS1 and DSX-1 24-Hour PM Threshold
Parameter
CV-L (BPV)
ES-L, ES-P, PRM, PDVS-L
SES-L, SES-P
UAS-P, UAS-L
October 15, 2003
-6
BER. All PM counters clear to zero at 12:00:00 AM
Threshold Count
133,400
648
100
10
LTPH-UM-1253-01
H4TU-C-231 List 5A
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