Owner's manual

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Physical description 163

In general, the LEDs operate as shown in Table 64 "NT5D14AA Lineside

T1 faceplate LEDs" (page 163).

Table 64

NT5D14AA Lineside T1 faceplate LEDs

LED

State

Definition

On (Red) The NT5D14AA card either failed its self-test or it hasn’t

yet been configured in software.

STATUS

Off The card is in an active state.

On (Red) A red alarm has been detected from the T1 link. (This

includes, but is not limited to: not receiving a signal, the

signal has exceeded bit error thresholds or frame slip

thresholds.)

RED

Off No red alarm exists.

On (Yellow) A yellow alarm state has been detected from the terminal

equipment side of the T1 link. If the terminal equipment

detects a red alarm condition, it may send a yellow alarm

signal to the Lineside T1 card (this depends on whether or

not your terminal equipment supports this feature).

YEL

Off No yellow alarm.

On (Red) The card detects whether tests are being run or that

alarms are disabled through the Man-Machine Interface.

The LED remains lit until these conditions are no longer

detected.

MAINT

Off The Lineside T1 card is fully operational.

The STATUS LED indicates that the Lineside T1 card has successfully

passed its self test, and is functional. When the card is installed, this LED

remains lit for two to five seconds as the self-test runs. If the self-test

completes successfully, the LED flashes three times and remains lit. When

the card is configured and enabled in software, the LED goes out. If the

LED flashes continuously, or remains weakly lit, replace the card.

Note: The STATUS LED indicates the enabled/disabled status of both

card slots of the Lineside T1 card simultaneously. To properly enable

the card, both the motherboard and the daughterboard slots must be

enabled. The STATUS LED turns off as soon as either one of the

Lineside T1 card slots are enabled. No LED operation is observed when

the second card slot is enabled. To properly disable the card, both card

slots must be disabled. The LED does not turn on until both card slots

are disabled.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 02.06 Standard

27 August 2008