Nortel Networks 311 User Manual
882
NTAK10 2.0 Mb DTI card
LED
State
Definition
On (Green)
The clock controller is switched on and is either locked to a reference
or is in free-run mode
or is in free-run mode
Flashing (Green)
The clock controller is switched on and locking onto the primary
reference
reference
Off
The clock controller is switched off
Note: See
in this chapter for
more on tracking and free-run operation.
The 2 Mb DTI pack uses a standard 9.5" by 12.5", multi-layer printed circuit
board. The faceplate is 7/8" wide and contains six LEDs.
board. The faceplate is 7/8" wide and contains six LEDs.
The LEDs operate as follows:
•
After the card is plugged in, the LEDs (a-e) are turned on by the
power-up circuit. The clock controller LED is independently controlled
by its own microprocessor.
power-up circuit. The clock controller LED is independently controlled
by its own microprocessor.
•
After initialization, the LEDs (a-e) flash three times (0.5 seconds on, 0.5
seconds off) and then individual LEDs go into appropriate states, as
shown in
seconds off) and then individual LEDs go into appropriate states, as
shown in
Table 366
NTAK10 LED states
NTAK10 LED states
LED
State
Definition
DIS
On (Red)
The NTAK10 circuit card is disabled.
Off
The NTAK10 is not in a disabled state.
OOS
On (Yellow)
The NTAK10 is in an out-of-service state.
Off
The NTAK10 is not in an out-of-service state.
NEA
On (Yellow)
A near end alarm state has been detected.
Off
No near end alarm.
FEA
On (Yellow)
A far end alarm state has been detected.
Off
No far end alarm.
LBK
On (Yellow)
NTAK10 is in loop-back mode.
Off
NTAK10 is not in loop-back mode.
CC
On (Red)
The clock controller is switched on and disabled.
On (Green)
The clock controller is switched on and is either locked to a reference
or is in free-run mode.
or is in free-run mode.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.