Nortel 1000E Maintenance Manual page 36

Page 36 of 162 Hardware maintenance tools
Table 3
NTAK79 LEDs (Part 1 of 2)
LED
OOS
ACT
RED
YEL
553-3041-500 Standard 1.00
The NTAK79 faceplate LEDs are described in Table 3.
State
On (Red)
Off
On (Green)
Off
On (Red)
Off
On (Yellow)
Off
September 2004
Definition
The NTAK79 2 Mbit PRI circuit card is either disabled
or out-of-service state.
The NTAK79 2 Mbit PRI is not in disabled state.
The NTAK79 2 Mbit PRI circuit card is in active state.
NTAK79 2 Mbit PRI is not in disabled state. The OOS
LED will be red.
A red alarm state has been detected. This represents
a local alarm state of:
Loss of Carrier (LOS)
Loss of Frame (LFAS), or
Loss of CRC Multi-frame (LMAS).
No red (local) alarm.
A yellow-alarm state has been detected. This
represents a remote alarm indication from the far
end. The alarm can be either Alarm Indication (AIS)
or Remote Alarm (RAI).
No yellow (remote) alarm.