Ntak09 And Ntrb21 Faceplate Leds - Nortel 1000E Maintenance Manual

48 Hardware maintenance tools
LED State
CC Flashing
(Green)
Off
DCH On (Red)
On (Green)
Off

NTAK09 and NTRB21 faceplate LEDs

The NTAK09/NTRB21 1.5 Mb DTI/PRI/DCH circuit cards have seven
faceplate LEDs. Five LEDs are directly associated with the operation of the
NTAK09/NTRB21 circuit cards. The remaining two LEDs are associated
with the optional daughterboards. The first of these LEDs indicates the
status of the NTAK20 Clock Controller daughterboard. The second LED
indicates the status of the D-channel interface.
Table 12 "NTAK09/NTRB21 LEDs" (page
on the NTAK09/NTRB21 DTI/PRI/DCH circuit cards. Only one of the five
LEDs is on at one time.
Table 12
NTAK09/NTRB21 LEDs
Affected
circuit card LED
NTAK09 DIS
or
NTRB21
ACT
RED
YEL
Copyright © 2007, Nortel Networks
.
Definition
The NTAK20 is equipped and is attempting to lock (tracking mode)
to a reference. If the LED flashes continuously over an extended
period of time, check the CC STAT in LD 60. If the CC is tracking,
this can be an acceptable state. Check for slips and related clock
controller error conditions. If none exist, this state is acceptable,
and the flashing identifies jitter on the reference.
The clock controller is not equipped.
The DCH is disabled.
The DCH is enabled, but not necessarily established.
The DCH is not equipped.
State Definition
On (Red) The circuit card is disabled.
Off The circuit card is not in disabled state.
On (Green) The circuit card is in 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 is disabled. See other faceplate LEDs for
additional information.
On (Red) A red-alarm state is detected.
Off No red alarm.
On (Yellow) A yellow-alarm state is detected.
Off No yellow alarm.
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 01.02 Standard
Release 5.0 20 June 2007
48)describes the LEDs found