Safety Summary - Cisco ONS 15310-MA Troubleshooting Manual

Safety Summary

Table 2-11
Priority
—
Lowest
1. Although it is not defined as a defect or failure, all-ones VC pointer relay is also
2. AU-LOP is also higher priority than the far-end failure HP-RFI, which does not
The far-end failure alarm hierarchy is shown in
Table 2-12 Far-End Alarm Hierarchy
Priority
Highest
—
Lowest
2.5.5 Service Effect
Service-Affecting (SA) alarms—those that interrupt service—could be Critical (CR), Major (MJ), or
Minor (MN) severity alarms. Service-Affecting (SA) alarms indicate service is affected.
Non-Service-Affecting (NSA) alarms always have a Minor (MN) default severity.
2.5.6 States
The State column on the Alarms or History tabs indicates the disposition of the alarm or condition as
follows:
•
•
•
2.6 Safety Summary
This section provides safety considerations designed to ensure safe operation of the
ONS 15310-MA SDH. Do not perform any procedures in this chapter unless you understand all safety
precautions, practices, and warnings for the system equipment. Some troubleshooting procedures
require installation or removal of cards; in these instances pay close attention to the following cautions
and warnings.
Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
2-18
Near-End Alarm Hierarchy
higher priority than AU-LOP. Similarly, all-ones VC pointer relay is higher
priority than TU-LOP.
affect the detection of any near-end failures. Similarly, TU-LOP is higher priority
than LP-RFI.
A raised (R) event is one that is active.
A cleared (C) event is one that is no longer active.
A transient (T) event is one that is automatically raised and cleared in CTC during system changes
such as user login, logout, loss of connection to node view, etc. Transient events do not require user
action. These are listed in
Condition Type
HP-PLM
DS-N AIS (if reported for
outgoing DS-N signals)
Table 2-12, as given in Telcordia GR-253-CORE.
Condition Type
MS-RFI
HP-RFI
LP-RFI
Chapter 3, "Transient Conditions."
Chapter 2 Alarm Troubleshooting
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