Nortel Networks Circuit Card User Manual
Page 711
NTAK09 1.5 Mb DTI/PRI card
Page 711 of 906
Circuit Card
Description and Installation
The first five LEDs operate as follows:
•
During system power up, the LEDs are on.
•
When the self-test is in progress, the LEDs flash three times and then go
into their appropriate states, as shown in Table 229.
Table 229
NTAK09 LED states
LED
State
Definition
DIS
On (Red)
The NTAK09 circuit card is disabled.
Off
The NTAK09 is not in a disabled state.
ACT
On (Green)
The NTAK09 circuit card is in an active state. No alarm states
exist, the card is not disabled, nor is it in a loopback state.
Off
An alarm state or loopback state exists, or the card has been
disabled. See the other faceplate LEDs for more information.
RED
On (Red)
A red-alarm state has been detected.
Off
No red alarm.
YEL
On (Yellow)
A yellow alarm state has been detected.
Off
No yellow alarm.
LBK
On (Green)
NTAK09 is in loop-back mode.
Off
NTAK09 is not in loop-back mode.