INSTALLATION

Table 2-D. Circuit Pack LED Status Indications

Circuit Pack Type

LEDs if Normal

LEDs if Failed

Service Circuit (ZTN85

Steady Green and

Steady Red or

or ZTN131 [R3])

Flashing or

Amber

Off

 

Steady Amber

 

 

 

 

 

 

CPU/Memory (ZTN129

Flashing Green

Steady

Green

or ZTN130 [R3])

 

or Off

 

 

 

 

 

All Other

Steady Green

Steady

Red

 

(Amber Also lighted

(see Note below)

 

when CP in use)

 

 

 

 

 

 

Note: The red and green LEDs can both be lighted at the same time. In normal operation, a lighted red LED indicates that an alarm has been recorded for that CP. If the green LED is also lighted, the main processor can communicate with the CP. A lighted amber LED indicates that a resource on the CP is being used. A lighted red LED and a dark green LED indicates that the CP diagnosed itself to be so bad that it has removed itself from the system.

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ADTRAN 25 manual Circuit Pack Type LEDs if Normal LEDs if Failed