User manual

Diagnostics & Troubleshooting
LED Test and Status Indicators
7-4 July 2004 Wide Bank 28 DS3 - Release 2.4
Critical (CR) Alarms
A critical alarm means that a traffic-affecting fault exists. Use the state of the Controller Status LED
or DS3 Line Condition LED for more information to identify the fault. The faults can be:
 DS3 Loss of Signal
 DS3 Loss of Frame
 DS3 Receive AIS
 DS3 Receive RAI
 Active Card Failure (only in a single card system)
For a detailed description of critical alarms and how they are reported, see Alarm Reporting on
page 12-1.
Major/Minor (MJ/MN) Alarms
A major/minor alarm means that a fault exists that has a potential to affect traffic, or a redundancy
switch occurred. Use the state of the Controller Status LED, DS3 Line Condition LED, Low-Speed
Status LED, or the Power LED for more information to identify the fault. For a detailed description
of major and minor alarms and how they are reported, see Alarm Reporting on page 12-1.
State Meaning
OFF No Critical Alarms
RED Traffic-affecting fault exists
State Meaning
OFF No Alarms
YELLOW Minor Alarms exist
RED Major Alarms exist