Nortel Meridian 1 Succession 1000M Operating and maintenance instructions

Meridian 1
Succession 1000M
Succession 3.0 Software
Large System
Installation and Configuration
Document Number: 553-3021-210
Document Release: Standard 1.00
Date: October 2003
Year Publish FCC TM
Copyright © 2003 Nortel Networks
All Rights Reserved
Produced in Canada
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design
or components as progress in engineering and manufacturing may warrant. This equipment has been tested
and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules, and the
radio interference regulations of Industry Canada. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at their own expense.
SL-1, Meridian 1, and Succession are trademarks of Nortel Networks.
Title page

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Large System Installation and Configuration
4
Revision history
October 2003
Standard 1.00. This document is a new NTP for Succession 3.0. It was created
to support a restructuring of the Documentation Library, which resulted in the
merging of multiple legacy NTPs. This new document consolidates
information previously contained in the following legacy documents, now
retired:
•Cabling Guide (553-3001-109)
•System Installation Procedures (553-3001-210)

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553-3021-210 Standard 1.00 October 2003

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Large System Installation and Configuration
10
Contents
About this document . . . . . . . . . . . . . . . . . . . . . . . 11
Subject .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Applicable systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Conventions .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Related information .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Summary of procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Preparing for installation . . . . . . . . . . . . . . . . . . . . 19
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Requirements .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
System equipment – UEMs .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
System options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Cable routing guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Equipment handling precautions .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Preparing the equipment for installation . . . . . . . . . . . . . . . . . . . . . . . . 38
Placing the fourth module on a column . . . . . . . . 41
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

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Placing the fourth module on a column . . . . . . . . . . . . . . . . . . . . . . . . 41
Positioning and leveling equipment . . . . . . . . . . . 47
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Positioning and leveling the equipment . . . . . . . . . . . . . . . . . . . . . . . . 47
Installing overhead cable tray kits . . . . . . . . . . . . 53
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Installing overhead cable tray kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Installing ac power . . . . . . . . . . . . . . . . . . . . . . . . . 57
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Ac-powered systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Safety ground/protective earth and logic return wiring . . . . . . . . . . . . 58
Installing ground cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Installing dc power . . . . . . . . . . . . . . . . . . . . . . . . . 67
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Dc-powered systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Candeo dc power system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
NT6D53 Junction Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Safety ground/protective earth and logic return wiring . . . . . . . . . . . . 76
Cabling and connecting the grounding leads . . . . . . . . . . . . . . . . . . . . 76
NT4N49AA Four Feed PDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Installing the NT4N49AA Four Feed PDU . . . . . . . . . . . . . . . . . . . . . 90
Planning and designating the
Main Distribution Frame (MDF) . . . . . . . . . . . . . . . 99
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
About terminations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Installation and designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Terminal block requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

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Installing the BIX cross-connect terminal .. . . . . . . . . . . . . . . . . . . . . . 101
Installing the Krone cross-connect system (UK) . . . . . . . . . . . . . . . . . 104
Installing Power Failure Transfer Units (PFTUs) . 113
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
PFTU configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Installing PFTUs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Connecting trunks and telephones .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Installing QUA6 PFTUs (UK installations) . . . . . . . . . . . . . . . . . . . . . 118
Configuring the system monitor . . . . . . . . . . . . . . 119
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
System monitor cabling .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Configuring the NT8D22 System Monitor . . . . . . . . . . . . . . . . . . . . . . 121
Cabling the NT8D22 System Monitor . . . . . . . . . . . . . . . . . . . . . . . . . 124
Alarm interfacing to Candeo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Connecting a system terminal or modem . . . . . . . 135
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
About the system terminal .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Connecting a terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Connecting a modem .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Cabling common equipment in a
single group system . . . . . . . . . . . . . . . . . . . . . . . . 151
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Cabling guidelines .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Core/Net module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Cabling the Core side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Cabling the Network side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Configuring and cabling the Clock Controllers (NTRB53) . . . . . . . . . 162
Connecting network Group 0: Shelf 0 to Shelf 1 . . . . . . . . . . . . . . . . . 163

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Optioning the System Utility Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Connecting Core modules to a LAN .. . . . . . . . . . . . . . . . . . . . . . . . . . 168
Cabling common equipment in a
multi group system . . . . . . . . . . . . . . . . . . . . . . . . 171
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Cabling guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Core/Net module .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Cabling the Core/Net module backplane . . . . . . . . . . . . . . . . . . . . . . . 176
Optioning the System Utility Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Core shelf cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Cabling the I/O panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Cabling the Core module to the LAN .. . . . . . . . . . . . . . . . . . . . . . . . . 186
Cabling a Dual Ring Fiber Network . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
FIJI card cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Installing the Shelf 0 fiber optic ring (ascending) . . . . . . . . . . . . . . . . 194
Installing the Shelf 1 fiber optic ring (descending) . . . . . . . . . . . . . . . 195
FIJI to FIJI cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Cabling and configuring the Clock Controller . . . . . . . . . . . . . . . . . . . 198
Cabling network modules and loops . . . . . . . . . . 203
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Network-to-network cabling .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Network module connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Connecting network Group 0: Shelf 0 to Shelf 1 . . . . . . . . . . . . . . . . . 204
Connecting Groups 1 through 7: Shelf 0 to Shelf 1 . . . . . . . . . . . . . . . 207
Connecting the Network modules to the Core/Net modules . . . . . . . . 209
Connecting the 3PE cables to the 3PE fanout panels . . . . . . . . . . . . . . 214
Cabling the NT8D04 Superloop Network Card . . . . . . . . . . . . . . . . . . 216

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Cabling lines and trunks . . . . . . . . . . . . . . . . . . . . . 225
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Cabling the NT8D37 IPE Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Connecting lines and trunks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Powering up the system and initial loading . . . . . 263
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Powering up ac systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Powering up dc systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Installing software and converting the database . . . . . . . . . . . . . . . . . . 272
Testing Core/Net 1 and Core/Net 0 .. . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Performing acceptance tests . . . . . . . . . . . . . . . . . 287
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Acceptance tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Testing the module power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Testing the blower unit and thermal sensor . . . . . . . . . . . . . . . . . . . . . 290
Testing the sysload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Testing the system terminal and system monitor . . . . . . . . . . . . . . . . . 293
Testing the PFTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Testing the MMDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Installing earthquake bracing . . . . . . . . . . . . . . . . 297
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Seismic-approved applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Installing seismic bracing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Installing non-seismic bracing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Adding a module to a column . . . . . . . . . . . . . . . . 315
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315

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Overview .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Adding a module to the base of a column . . . . . . . . . . . . . . . . . . . . . . 316
Adding a module between two other modules . . . . . . . . . . . . . . . . . . . 322
Adding a module to the top of a column . . . . . . . . . . . . . . . . . . . . . . . 326
Appendix A: Internal and External
Signaling Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
List of terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367

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Large System Installation and Configuration
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About this document
This document is a global document. Contact your system supplier or your
Nortel Networks representative to verify that the hardware and software
described is supported in your area.
Subject
This document provides installation and acceptance testing procedures for
Meridian 1 Large Systems and Succession 1000M Large Systems.
Note on legacy products and releases
This NTP contains information about systems, components, and features that
are compatible with Succession 3.0 Software. For more information on
legacy products and releases, click the Technical Documentation link under
Support on the Nortel Networks home page:
http://www.nortelnetworks.com/
Applicable systems
This document applies to the following systems:
• Meridian 1 Option 51C
• Meridian 1 Option 61
• Meridian 1 Option 61C
• Meridian 1 Option 61C CP PII
• Meridian 1 Option 81
• Meridian 1 Option 81C

Page 12 of 376 About this document
553-3021-210 Standard 1.00 October 2003
• Meridian 1 Option 81C CP PII
• Succession 1000M Half Group
• Succession 1000M Single Group
• Succession 1000M Multi Group
Note that memory upgrades may be required to run Succession 3.0 Software
on CP3 or CP4 systems (Options 51C, 61, 61C, 81, 81C).
System migration
When particular Meridian 1 systems are upgraded to run Succession 3.0
Software and configured to include a Succession Signaling Server, they
become Succession 1000M systems. Table 1 lists each Meridian 1
Large System that supports an upgrade path to a Succession 1000M
Large System.
For more information, see Large System: Upgrade Procedures
(553-3021-258).
Table 1
Meridian 1 systems to Succession 1000M systems
This Meridian 1 system...
Maps to this
Succession 1000M system
Meridian 1 Option 51C Succession 1000M Half Group
Meridian 1 Option 61 Succession 1000M Single Group
Meridian 1 Option 61C Succession 1000M Single Group
Meridian 1 Option 61C CP PII Succession 1000M Single Group
Meridian 1 Option 81 Succession 1000M Multi Group
Meridian 1 Option 81C Succession 1000M Multi Group
Meridian 1 Option 81C CP PII Succession 1000M Multi Group

About this document Page 13 of 376
Large System Installation and Configuration
Intended audience
This document is intended for individuals responsible for installing and
configuring Large Systems. To use this document, you should have a basic
knowledge of Large System equipment and operation. Contact Nortel
Networks for information on installation courses. You should also read and
fully understand the Large System: Overview (553-3021-010) before you
install a system.
Conventions
Terminology
In this document, the following systems are referred to generically as
“system”:
•Meridian1
• Succession 1000M
The following systems are referred to generically as “Large System”:
• Meridian 1 Option 51C
• Meridian 1 Option 61
• Meridian 1 Option 61C
• Meridian 1 Option 61C CP PII
• Meridian 1 Option 81
• Meridian 1 Option 81C
• Meridian 1 Option 81C CP PII
• Succession 1000M Half Group
• Succession 1000M Single Group
• Succession 1000M Multi Group

Page 14 of 376 About this document
553-3021-210 Standard 1.00 October 2003
Related information
This section lists information sources that relate to this document.
NTPs
The following NTPs are referenced in this document:
• Circuit Card: Description and Installation (553-3001-211)
•Signaling Server: Installation and Configuration (553-3001-212)
•Software Input/Output: Administration (553-3001-311)
•Software Input/Output: System Messages (553-3001-411)
•Telephones and Consoles: Description (553-3001-367)
•Large System: Overview (553-3021-010)
•Large System: Planning and Engineering (553-3021-120)
•Large System: Upgrade Procedures (553-3021-258)
•Candeo Power System User Guide (P0914425)
•Candeo Power System Installation Guide (P0914426)
Online
To access Nortel Networks documentation online, click the
Technical Documentation link under Support on the Nortel Networks
home page:
http://www.nortelnetworks.com/
CD-ROM
To obtain Nortel Networks documentation on CD-ROM, contact your
Nortel Networks customer representative.

Page 15 of 376
Large System Installation and Configuration
18
Introduction
Contents
This section contains information on the following topics:
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Summary of procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Overview
This document describes the procedures used to install and configure a
Large System. For proper installation, perform the steps in the sequence
stated in “Summary of procedures.” The summary will refer you to other
sections within this document. After completing the steps listed in those
sections, return to the summary and continue on to the next step.
Whenever possible, install external power equipment before the system
installation. If reserve power equipment is used, install it according to the
manufacturer’s instructions.
To install telephones and attendant consoles, see Telephones and Consoles:
Description (553-3001-367).
System installation must be performed by qualified personnel only.

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Summary of procedures
1Prepare equipment for installation; go to “Preparing the equipment for
installation” on page 38.
2Place the fourth module on a column (if required); go to “Placing the
fourth module on a column” on page 41.
3Position and level equipment; go to “Positioning and leveling
equipment” on page 47.
Note: If earthquake bracing is required, go to “Installing earthquake
bracing” on page 297. The section will provide procedures for installing
column and floor bracing and positioning and levelling equipment.
When those procedures are complete, return to Step 4 or Step 5 (as
applicable) in this summary.
4Install overhead cable tray kits (if required); go to “Installing overhead
cable tray kits” on page 53.
5Install power supplies in all modules:
aMake sure the system is disconnected from any power source.
bSet switches and breakers on all module power supplies or module
power distribution units (MPDUs) to OFF.
cInsert each power supply into the appropriate card cage and hook the
locking devices.
6Install a NT4N43 cPCI Multi-Media Disk Unit in each cPCI Core/Net
Module.
Note: In each Large System, there are two MultiMedia Disk Units.
Install a cPCI Multi-Media Disk Unit in each cPCI Core/Network.
7Install power equipment and ground wiring:
— For ac-powered systems, go to “Installing ac power” on page 57.
— For dc-powered systems, go to “Installing dc power” on page 67.
8Plan and designate the main distribution frame (MDF); go to “Planning
and designating the Main Distribution Frame (MDF)” on page 99.

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9Install Power Failure Transfer Units (PFTUs) (if required); go to
“Installing Power Failure Transfer Units (PFTUs)” on page 113.
10 Configure the system monitor; go to “Configuring the system monitor”
on page 119.
11 Connect a system terminal (or modem); go to “Connecting a system
terminal or modem” on page 135.
12 Install cabling:
— To cable common equipment, go to “Cabling common equipment in
a single group system” on page 151.
— To cable network loops, go to “Cabling network modules and loops”
on page 203.
— To cable IPE Modules to the MDF and to connect lines and trunks,
go to “Cabling lines and trunks” on page 225.
13 Power up the system and load the system software; go to “Powering up
the system and initial loading” on page 263.
14 If you are upgrading your system, do not install new software, but return
to the upgrade procedures in Large System: Upgrade Procedures
(553-3021-258).
15 Perform acceptance tests; go to “Performing acceptance tests” on
page 287.
16 To test circuit cards, see “Acceptance tests” in Circuit Card: Description
and Installation (553-3001-211). To test telephones and attendant
consoles, see Telephones and Consoles: Description (553-3001-367).
17 Replace all covers and grills on the front and rear of the system.

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553-3021-210 Standard 1.00 October 2003
Table 2
List of tasks in subsections
Task Go to page
Preparing for installation 19
Placing the fourth module on a column 41
Positioning and leveling equipment 47
Installing overhead cable tray kits 53
Installing ac power 57
Installing dc power 67
Planning and designating the Main Distribution
Frame (MDF)
99
Installing Power Failure Transfer Units (PFTUs) 113
Configuring the system monitor 119
Connecting a system terminal or modem 135
Cabling common equipment in a single group system 151
Cabling common equipment in a multi group system 171
Cabling network modules and loops 203
Cabling lines and trunks 225
Powering up the system and initial loading 263
Performing acceptance tests 287
Installing earthquake bracing 297
Adding a module to a column 315

Page 19 of 376
Large System Installation and Configuration
40
Preparing for installation
Contents
This section contains information on the following topics:
Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
System equipment – UEMs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
System options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Cable routing guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Equipment handling precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Preparing the equipment for installation . . . . . . . . . . . . . . . . . . . . . . . . 38
Requirements
Before system equipment is delivered to the installation site, you must
consider these requirements:
• Fire protection and safety requirements
• Equipment room requirements
• Grounding and power requirements
• Cable requirements
Specifications for these requirements and for developing the equipment room
floor plan are provided in Large System: Planning and Engineering
(553-3021-120).

Page 20 of 376 Preparing for installation
553-3021-210 Standard 1.00 October 2003
System equipment – UEMs
Universal Equipment Modules (UEMs) are the building blocks of the
communications system. Each UEM is a self-contained unit with power, a
card cage, I/O panels, and cable routing channels. It is a generic case
containing sets of equipment used in system operations (see Figure 1 on
page 21).
UEMs are stacked in columns
UEMs are stacked in columns, up to four modules high. These UEMs are
numbered 0 to 3 from the bottom up (see Figure 1 on page 21). Cables
connect cards in the same module, between two modules and between cards
and the I/O panel in the same module.
Column components
Each column contains a pedestal base, a top cap, and up to four modules.
Pedestals
Each column sits on a pedestal. The pedestal contains power, cooling, and
monitoring equipment.
• A Power Distribution Unit (PDU) in the back of the pedestal supplies
either ac or dc power to the column.
• A System Monitor checks the column’s cooling and power systems.
• A blower unit (accessible from the front of the pedestal) forces air up
through the modules to cool the circuit cards.