Table 1-1. Annunciator Conditions; Table 1-2. Module Status Leds - Nortel 5399 Hardware Installation Manual

Segment
Connection LEDs
Module Status LEDs

Table 1-1. Annunciator Conditions

Color Operational Condition
Green The module is performing normally.
Amber Some portion of the module has failed, or the module is being
initialized.
Off The module is not receiving +5 volt power, or the power level is
below the reset limit (4.65 volts).
The Segment Connection LEDs indicate which backplane Ethernet LAN
segments are being used. There are 12 green LEDs, labeled S1 through
S12, for the 12 Ethernet segments. When an LED is illuminated, it
indicates that the Model 5399 Remote Access Concentrator is connected
to the corresponding backplane Ethernet LAN segment; when off it
indicates that the corresponding backplane Ethernet LAN segment is not
connected.
The Module Status LEDs are a group of five LEDs that display the status
of the activity of the Model 5399 Remote Access Concentrator.
describes the Module Status LEDs.

Table 1-2. Module Status LEDs

LED Description
Init Turns green when the Remote Access Concentrator begins the
initialization process after a power-up or reset. This is the first
LED that lights after power-up or reset. The Init LED turns off
after the diagnostics have successfully completed.
Unit Turns green after the Remote Access Concentrator passes the
power-up diagnostics. Turns amber if the power-up diagnostics
fail.
Net Turns green after the Remote Access Concentrator verifies that a
valid Ethernet connection exists.
Attn Turns green when the Remote Access Concentrator requires
operator attention, that is, in monitor mode. Turns amber when the
diagnostic tests fail.
Nortel Networks 5399 Access Switch Hardware Installation Guide
Chapter 1 Introduction
Table 1-2
1-9