Ntdk20 Ssc Card Faceplate Leds - Nortel 1000E Maintenance Manual

Affected
circuit card LED
LBK
DCH
NTAK20 CC
NTAK93 DCH
or
NTBK51
Monitor jacks
The NTAK09, NTAK10, NTAK79, NTBK50, and NTRB21 have two bantam
jacks (RCV and XMT) on the faceplate. They are used to monitor the
performance of the carrier in the receive and transmit direction. The jacks
allow the convenient connection of external T1/E1 test equipment and ISDN
protocol analyzers.

NTDK20 SSC card faceplate LEDs

The NTDK20 SSC card has either three or five faceplate LEDs, depending
on the version of the card.
The SSC/PC Card LED indicates the following, if the LED is:
•
•
•
•
Copyright © 2007, Nortel Networks
.
State
On (Green)
Off
On (Red)
On (Green)
Off
On (Red)
On (Green)
Flashing
(Green)
Off
On (Red)
On (Green)
Off
Off, the SSC is in normal operation
Yellow, the SSC is disabled
Red, the SSC is running self-test
Red and flashes three times, the self-test passed
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 01.02 Standard
Release 5.0 20 June 2007
Definition
The card is in loopback mode.
The card is not in loopback mode.
The D-channel is equipped and disabled.
The D-channel is equipped and enabled.
The D-channel is not equipped.
The NTAK20 is equipped and disabled.
The NTAK20 is equipped and is either locked to a
reference or is in free-run mode.
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 is identifies jitter on the reference.
The NTAK20 is not equipped.
The D-channel daughterboard is equipped and
disabled.
The D-channel daughterboard is equipped and
enabled.
The D-channel daughterboard is not equipped.
Circuit card features 49