AT&T Network Adapter 25 Installation And Maintenance Manual page 64

INSTALLATION
Table 2-D.
Circuit Pack Type
Service Circuit (ZTN85
or ZTN131 [R3])
CPU/Memory (ZTN129
or ZTN130 [R3])
All Other
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.
2-40
Circuit Pack LED Status Indications
LEDs if Normal
Steady Green and
Flashing or
Steady Amber
Flashing Green
Steady Green
(Amber Also lighted
when CP in use)
LEDs if Failed
Steady Red or
Amber Off
Steady Green
or Off
Steady Red
(see Note below)