Alcatel-Lucent 1643 AMS - Available PM data

Available PM data
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Generalities
Performance parameters are measured on a continuous basis at the termination point(s).
The performance parameters are:
• ES — Number of Errored Second
• SES — Number of Severely Errored Second
• BBE — Number of Background Block Errors
• UAS — Unavailable Second
• BiDirUAS — Bidirectional Unavailable Second
• BiDirUAPcount — Bidirectional Unavailable Period Count
Each of these parameters has a threshold. The threshold can be set according to your
maintenance philosophy. If no thresholds are manually input, the network element will
apply the default threshold values for each parameters. In the event that a measurement
parameter exceeds this user-set threshold, the system generates an alarm.
Prerequisite to get an Alarm
Although unacceptable amount of errors were to occur at a termination point during
several hours, no alarm would be raised unless you previously have:
• Enabled the Thresholding functionality;
• Enabled the performance parameters counters;
• Set the threshold values (TR and RTR) for the counters;
• Set the termination point to monitored, as mentioned in Prerequisite to be able to
Monitor a TP.
SDH measurement parameters
Each of the measurement parameters has an associated counter. Performance
monitoring results are displayed on screen by means of these counters.
The table below describes each performance monitoring measurement parameters:
Measurement Parameters Description
ES
A period of 1 second having one or more
blocks in error.
SES
A period of one second having more than
x % of its blocks in error. The value of x
is called the SES Declaration Threshold.
This threshold is default 30 (%). An SES
is also counted as an ES
BBE
An errored block, that does not occur as a
part of a Severely Errored Second (SES).
Performance monitoring
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365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
10-27