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

.

Hardware maintenance tools

Contents

This section contains the following topics:
•
"Introduction" (page 29)
•
"Alarm/fan module features" (page 29)
•
"Compact flash cards" (page 32)
•
"Circuit card features" (page 33)
•
"Signaling servers for DTLS" (page 52)
•
"System alarms" (page 53)
•
"Line transfer" (page 54)
•
"External power loss" (page 55)

Introduction

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

Alarm/fan module features

The NTDU64 alarm/fan module provides cooling for a CP PIV Call
Processor. 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.
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 04.01 4 June 2010
Copyright © 2004-2010 Nortel Networks. All Rights Reserved.
29