Lucent Technologies DDM-2000 OC-3, User & Service Manual

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363-206-285
Maintenance Description
9-42 Issue 3 June 2001
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DS1 — DS1 near-end path is monitored for SF framing and both
near-end and far-end paths are monitored for ESF framing. The
data is displayed in ES-P, SES-P, and UAS-P categories. CV-P is
also displayed.
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DS3 — DS3 path incoming from the fiber (high-speed side) is
monitored for P-bit and F&M bit and the data is displayed in CV-P,
ES-P, SES-P, and UAS-P registers. In addition, severely errored
frame second (SEFS) is also monitored and displayed.
DS3 path incoming from the DSX-3 (low-speed side) is also
monitored, in addition to monitoring the path from the fiber, for P-bit
and F&M bit. The same registers are also displayed for the data
from the DSX-3. DS3 path from both the fiber and the DSX-3 are
monitored for C-bit and are displayed in the same registers as
above. The far-end data (FEBE bits) is monitored and displayed as
well.
VT Performance Monitoring 9
VT PM provides performance monitoring of the V5 byte for ES, SES, and UAS. VT
PM is a feature package option that requires feature package software licensed
by Lucent and the use of the
set-feat
command to enable the feature.
The counts are retrieved using the
rtrv-pm-vt1
command by the message-
based OS or through the CIT to determine if the service is operating within tariffed
limits.
DS1 Performance Monitoring 9
DS1 PM is a feature package option that requires feature package software
licensed by Lucent and the use of the
set-feat
command to enable the feature.
DS1 PM measures near-end performance and ESF format far-end performance
report of the incoming DS1, allowing service providers to determine the end-to-
end performance of a DS1 signal. Tariffed service verification consists of
monitoring performance parameters that can be associated with the customer's
end-to-end service. The DDM-2000 OC-3 Multiplexer provides this capability for
DS1 services with the DS1 PM feature. Based on the
ANSI T1.403 ESF format,
this capability retrieves performance report messages written into the ESF data
link by the customer's terminal equipment.