363-206-295
Maintenance Description
9-30 Issue 1 December 1997
and provides estimated counts of DS3 adjusted F&M bit CV, ES, SES, and UAS
incoming from the fiber and DSX. Quarter-hour and current day registers are
provided with provisionable TCAs on a per-shelf basis. SEFS are also monitored.
C-Bit 9
When the DS3 path PM C-bit option is selected, both near-end and far-end (far-
end block errors) PM data are monitored and displayed.
The system provides counts of DS3 C-bit parity CV-P, ES-P, SES-P, and UAS-P
incoming from both the DSX-3 and the fiber. The type of PM is provisioned per
DS3 service by a CIT command.
For C-bit PM, the DS3 service can be provisioned in VM or VMR modes. In VMR
mode, the C-bit errors are not corrected as in the P-bit option.
Quarter-hour and day registers are provided with provisionable TCAs. The TCAs
are provisionable on a per-shelf basis. SEFS counts are also provided.
DS3 Line Performance Monitoring 9
DS3 line parameters include CVL, ESL, and SESL. DS3 line PM provides
provisionable bit error ratios (TCAs) for all DS3 line parameters. For CVL
parameters, bit errors can also be provisioned in ratios such as 10
-7
, 10
-8
, and
10
-9
.
DS3 Performance Monitoring Parameters 9
Table 9-4 lists the performance parameters monitored by the DDM-2000 OC-12
Multiplexer. The collection of performance parameters depends directly on slot
state transitions, port states, and cross-connections.
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