Hardware Maintenance Tools; Contents; Introduction; Alarm/Fan Module Features - Nortel 1000E Maintenance Manual

Hardware maintenance tools

Contents

This section contains the following topics:
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Introduction

Fault indicators and hardware features help perform maintenance tasks
(particularly identifying and clearing faults). These maintenance tools
include:
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Alarm/fan module features

The NTDU64 alarm/fan module provides cooling for a CP PII or CP PIV Call
Server. It also provides a thermostat to monitor the Call Server temperature.
If the Call Server temperature reaches 42 C (107 F), the fan units switch into
high-speed mode. The fans revert to normal speed when the Call Server
temperature falls below 37 C (98 F). Also, if one fan fails, the remaining two
fans switch into high-speed mode indefinitely.
If the Call Server temperature exceeds 60 C (140 F), it triggers a major
alarm. The Call Server continues to operate, provided it does not lose power.
Copyright © 2007, Nortel Networks
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"Introduction" (page 29)
"Alarm/fan module features" (page 29)
"Compact flash cards" (page 31)
"Circuit card features" (page 32)
"Signaling Server LEDs" (page 54)
"System alarms" (page 55)
"Line transfer" (page 56)
"External power loss" (page 56)
circuit card features that include self-tests and status indicators
LED indicators that identify Call Server power and temperature faults
system alarms that categorize the severity of component failure

Nortel Communication Server 1000

Communication Server 1000E Maintenance

NN43041-700 01.02 Standard
Release 5.0 20 June 2007
29