ADTRAN MX2800 STS-1 - System Alarms; Table 3-11. System Alarm Descriptions

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Section 3, Configuration MX2800 STS-1 User Manual
System Management
System Alarms
Table 3-11 describes System Alarm indications.
Table 3-11. System Alarm Descriptions
Alarm Description
Protection Switching
Card Failure A controller card has failed.
Protection Switch All data has been routed from the primary card to the standby card.
Communication Fail Communication between controller cards A and B has failed.
System Timing
Clock Status* When enabled, an abnormal clock status condition causes the CRITICAL relay
to be thrown.The alarm remains active until the condition clears or the alarm is
acknowledged.
PRI EXT Clock Status* When enabled, a fault condition (LOS/AIS or FAIL) on the PRImary external
clock causes the CRITICAL relay to be thrown. The alarm remains active until
the condition clears or the alarm is acknowledged.
SEC EXT Clock Status* When enabled, a fault condition (LOS/AIS or FAIL) on the SEConday external
clock causes the CRITICAL relay to be thrown. The alarm remains active until
the condition clears or the alarm is acknowledged.
Activity Loss Status* When enabled, the CRITICAL relay is thrown if the Activity Loss Status indi-
cates the failure of an internal clock. The alarm remains active until the condition
clears or the alarm is acknowledged.
* Critical Alarm