Patton electronics 3324 User manual

Model 3324
VDSL Carrier-Class Aggregator
Getting Started Guide
Sales Office: [phone]
Technical Support: [phone]
E-mail: [email protected]
WWW: www.patton.com
Document Number: 05813U1-001 Rev. A
Part Number: 07MD3324-GSG
Revised: May 21, 2004

Patton Electronics Company, Inc.
7622 Rickenbacker Drive
Gaithersburg, MD 20879 USA
tel: [phone]
fax: [phone]
support: [phone]
web: www.patton.com
e-mail: [email protected]
Copyright © 2003, Patton Electronics Company. All rights reserved.
The information in this document is subject to change without notice. Patton Elec-
tronics assumes no liability for errors that may appear in this document.

3
Contents
Contents ......................................................................................................................................................... 3
Compliance Information ................................................................................................................................ 7
Radio and TV interference ................................................................................................................................7
CE Notice .........................................................................................................................................................7
Service ..............................................................................................................................................................7
About this guide ............................................................................................................................................. 9
Audience................................................................................................................................................................. 9
Structure................................................................................................................................................................. 9
Precautions ............................................................................................................................................................. 9
Safety when working with electricity ...............................................................................................................10
Preventing electrostatic discharge damage .......................................................................................................10
General observations .......................................................................................................................................11
Typographical conventions used in this document................................................................................................ 11
General conventions .......................................................................................................................................11
Mouse conventions .........................................................................................................................................12
1General Information...................................................................................................................................... 13
Model 3324 overview ............................................................................................................................................14
Hardware overview................................................................................................................................................15
Ethernet uplink ...............................................................................................................................................16
POTS/ISDN ..................................................................................................................................................16
VDSL ports ....................................................................................................................................................17
RS-232 control port ........................................................................................................................................17
Power system ..................................................................................................................................................17
Management services ......................................................................................................................................17
LED display ....................................................................................................................................................17
Approvals ..............................................................................................................................................................18
2Hardware installation.................................................................................................................................... 19
Introduction..........................................................................................................................................................20
Unpacking the Model 3324...................................................................................................................................20
Model 3324 chassis installation .............................................................................................................................20
Cable installation...................................................................................................................................................21
Installing the power cables—AC power supply ...............................................................................................21
Connecting the Ethernet uplink ports .............................................................................................................21
Cascading configuration ............................................................................................................................22
Optional GBIC Ethernet uplink slot ...............................................................................................................24
GBIC fiber optics ............................................................................................................................................24
Connecting the EIA-574, RS-232 configuration port (DCE configured) ........................................................24
Connecting the POTS/ISDN Ports ................................................................................................................25
Connecting the VDSL Ports ...........................................................................................................................25
Completing the hardware installation....................................................................................................................26

Contents Model 3324 User Guide
4
3Configuring the 3324 for operation.............................................................................................................. 27
Introduction..........................................................................................................................................................29
Configuration prerequisites ...................................................................................................................................29
Initial configuration through the RS-232 control port...........................................................................................30
Connecting the DB9-RJ45 adapter with the included cable ............................................................................30
Setting up the HyperTerminal (or similar program) session ............................................................................30
Set IP address ..................................................................................................................................................33
Remote Network Management..............................................................................................................................35
Controlling the Model 3324 remotely through TELNET ...............................................................................35
Controlling the Model 3324 remotely through SNMP ...................................................................................35
Port Status ......................................................................................................................................................36
State ..........................................................................................................................................................36
Link Status ................................................................................................................................................36
SNR (Signal to Noise Ratio) .....................................................................................................................36
Speed Status ..............................................................................................................................................37
Duplex Status ............................................................................................................................................37
Flow Control .............................................................................................................................................37
Rate Control .............................................................................................................................................37
Port Security .............................................................................................................................................37
Port Statistics ..................................................................................................................................................38
Administrator ........................................................................................................................................................38
IP Address Configuration ................................................................................................................................39
Basic Switch Settings .......................................................................................................................................39
Description ...............................................................................................................................................39
MAC Address ............................................................................................................................................39
Firmware Version ......................................................................................................................................39
Default Config Value Version ...................................................................................................................39
Advanced Switch Settings ...............................................................................................................................39
Mac Address Age-out Time .......................................................................................................................39
Max Bridge Transit Delay Bound Control ................................................................................................40
Broadcast Storm Filter ...............................................................................................................................40
Priority Queue Service Settings .......................................................................................................................40
First Come First Service ............................................................................................................................40
All High Before Low .................................................................................................................................40
WRR (Weighted Round-Robin) ...............................................................................................................40
Enable Delay Bound .................................................................................................................................41
QoS Policy High Priority Levels ................................................................................................................41
Protocol Enable Settings .................................................................................................................................41
Enable STP ...............................................................................................................................................41
Enable IGMP ............................................................................................................................................41
Console Port Settings ......................................................................................................................................41
Port Control Settings ......................................................................................................................................42
State ..........................................................................................................................................................42
Negotiation ...............................................................................................................................................42

5
Model 3324 User Guide Contents
Speed ........................................................................................................................................................42
Link Watch Dog(LWD) function: ......................................................................................................42
Procedure for Changing VDSL Ports Speed Settings: .........................................................................42
Rate Control .............................................................................................................................................43
Port Security .............................................................................................................................................43
Duplex ......................................................................................................................................................43
Flow Control .............................................................................................................................................44
Trunking ........................................................................................................................................................44
System Priority ..........................................................................................................................................44
State Activity .............................................................................................................................................46
Filter Database ................................................................................................................................................46
IGMP Snooping .......................................................................................................................................46
Static MAC Address ........................................................................................................................................47
MAC Filtering ................................................................................................................................................48
VLAN Configurations ....................................................................................................................................48
Support Port-based VLAN ........................................................................................................................49
Tagged-based VLAN .................................................................................................................................50
Port VID ...................................................................................................................................................53
Ingress Filtering ..............................................................................................................................................53
Spanning Tree Protocol Settings .....................................................................................................................53
Port Sniffer .....................................................................................................................................................55
SNMP Settings ...............................................................................................................................................56
Security Manager ......................................................................................................................................57
System Configuration (802.1X) ......................................................................................................................57
Per port Configuration ..............................................................................................................................58
Misc. Configuration ..................................................................................................................................58
TFTP Update Firmware .................................................................................................................................58
Using TFTP ...................................................................................................................................................59
TFTP Restore Configuration ....................................................................................................................59
TFTP Backup Configuration ....................................................................................................................60
Resetting the Model 3324 ...............................................................................................................................60
Rebooting the Model 3324 .............................................................................................................................60
4Applications .................................................................................................................................................. 61
MxU multi-service delivery....................................................................................................................................62
High bandwidth backbone ....................................................................................................................................63
5Troubleshooting............................................................................................................................................ 65
Diagnosing VDSL indicators.................................................................................................................................66
System Diagnostics................................................................................................................................................66
Power and Cooling Problems ..........................................................................................................................66
Installation ............................................................................................................................................................67
Transmission Mode ........................................................................................................................................67
Cabling ...........................................................................................................................................................67
Physical Configuration ....................................................................................................................................67

Contents Model 3324 User Guide
6
System Integrity ..............................................................................................................................................67
CPE (Customer Premise/Remote) Side Starts Link Watch Dog ............................................................................67
6Contacting Patton for assistance ................................................................................................................... 69
Introduction..........................................................................................................................................................70
Contact information..............................................................................................................................................70
Warranty Service and Returned Merchandise Authorizations (RMAs)...................................................................70
Warranty coverage ..........................................................................................................................................70
Out-of-warranty service .............................................................................................................................70
Returns for credit ......................................................................................................................................70
Return for credit policy .............................................................................................................................71
RMA numbers ................................................................................................................................................71
Shipping instructions ................................................................................................................................71
ASpecifications ................................................................................................................................................ 73
VDSL line interface...............................................................................................................................................75
POTS-ISDN interface...........................................................................................................................................75
Modulation ...........................................................................................................................................................75
Frequency range ....................................................................................................................................................75
Transmission .........................................................................................................................................................75
Management .........................................................................................................................................................75
Ethernet standards.................................................................................................................................................75
Management standards..........................................................................................................................................75
LED indicators......................................................................................................................................................75
Power supply .........................................................................................................................................................75
Compliance ...........................................................................................................................................................75
Environment .........................................................................................................................................................75
Operating temperature ....................................................................................................................................75
Humidity ........................................................................................................................................................76
Dimensions ...........................................................................................................................................................76
Weight ..................................................................................................................................................................76
BCabling ......................................................................................................................................................... 77
Introduction..........................................................................................................................................................78
CVDSL Spectrum ........................................................................................................................................... 81
Introduction..........................................................................................................................................................82
DExample of VLAN Setting ............................................................................................................................ 83
Introduction..........................................................................................................................................................84

7
Compliance Information
Radio
and TV
interference
The Model 3324 generates and uses radio frequency energy, and if not installed and used properly—that is, in
strict accordance with the manufacturer's instructions—may cause interference to radio and television recep-
tion. The Model 3324 has been tested and found to comply with the limits for a Class A computing device in
accordance with the specifications in Subpart B of Part 15 of FCC rules, which are designed to provide reason-
able protection from such interference in a commercial installation. However, there is no guarantee that inter-
ference will not occur in a particular installation. If the Model 3324 does cause interference to radio or
television reception, which can be determined by disconnecting the cables, the user is encouraged to try to cor-
rect the interference by one or more of the following measures: moving the computing equipment away from
the receiver, re-orienting the receiving antenna, and/or plugging the receiving equipment into a different AC
outlet (such that the computing equipment and receiver are on different branches).
CE Notice
The CE symbol on your Patton Electronics equipment indicates that it is in compliance with the Electromag-
netic Compatibility (EMC) directive and the Low Voltage Directive (LVD) of the Union European (EU). A
Certificate of Compliance is available by contacting Technical Support.
Service
All warranty and non-warranty repairs must be returned freight prepaid and insured to Patton Electronics. All
returns must have a Return Materials Authorization number on the outside of the shipping container. This
number may be obtained from Patton Electronics Technical Services at:
•Tel: [phone]
•Email: [email protected]
•URL: www.patton.com
Note
Packages received without an RMA number will not be accepted.

Compliance Information Model 3324 User Guide
8

9
About this guide
This guide describes installing and configuring a Patton Electronics Model 3324 VDSL Carrier Class Aggrega-
tor. By the time you are finished with this guide, your Model 3324 will be connected to the remote VDSL
modems and transferring data. The instructions in this guide are based on the following assumptions:
•The Model 3324 will connect to an 10/100/1000Base-TX Network Uplink or Device
•There is a LAN connected to the Ethernet port of the 3324
•Users will be connected to remote VDSL modems.
Audience
This guide is intended for the following users:
•Operators
•Installers
•Maintenance technicians
Structure
This guide contains the following chapters and appendices:
•Chapter 1 describes the 3324
•Chapter 2 describes installing the 3324 hardware
•Chapter 3 describes configuring the 3324 for use
•Chapter 4 describes Model 3324 applications
•Chapter 5 contains troubleshooting information
•Chapter 6 contains information on contacting Patton technical support for assistance
For best results, read the contents of this guide before you install the router.
Precautions
Notes and cautions, which have the following meanings, are used throughout this guide to help you become
aware of potential Router problems. Warnings relate to personal injury issues, and Cautions refer to potential
property damage.
Note
Calls attention to important information.
The shock hazard symbol and WARNING heading indicate a potential electric
shock hazard. Strictly follow the warning instructions to avoid injury caused
by electric shock.
The alert symbol and WARNING heading indicate a potential safety hazard.
Strictly follow the warning instructions to avoid personal injury.

About this guide Model 3324 User Guide
10
Safety when working with electricity
Preventing electrostatic discharge damage
When starting to install interface cards place the interface card on its shielded plastic bag if you lay it on your
bench.
The shock hazard symbol and CAUTION heading indicate a
potential electric shock hazard. Strictly follow the instructions to
avoid property damage caused by electric shock.
The alert symbol and CAUTION heading indicate a potential
hazard. Strictly follow the instructions to avoid property dam-
age.
Mains Voltage: Do not open the case when the power cord is connected. For
systems without a power switch, line voltages are present within the power
supply when the power cord is connected.
Hazardous network voltages are present in WAN ports regardless of whether
power to the SmartNode is ON or OFF. To avoid electric shock, use caution
when near WAN ports. When detaching cables, detach the end away from the
SmartNode first.
Do not work on the system or connect or disconnect cables during periods of
lightning activity.
Before opening the chassis, disconnect the telephone network
cables to avoid contact with telephone line voltages.
Ultimate disposal of this equipment must be handled according
to all applicable national laws and regulations.

11
Model 3324 User Guide About this guide
General observations
•Clean the case with a soft slightly moist anti-static cloth
•Place the unit on a flat surface (or optionally in a rack for the SN2x00) and ensure free air circulation
•Avoid exposing the unit to direct sunlight and other heat sources
•Protect the unit from moisture, vapors, and aggressive liquids
Typographical conventions used in this document
This section describes the typographical conventions and terms used in this guide.
General conventions
The procedures described in this manual use the following text conventions:
Electrostatic Discharge (ESD) can damage equipment and impair
electrical circuitry. It occurs when electronic printed circuit cards
are improperly handled and can result in complete or intermit-
tent failures. Do the following to prevent ESD:
•
Always follow ESD prevention procedures when removing
and replacing cards.
•
Ensure that the SmartNode chassis is electrically connected to
earth ground.
•
Wear an ESD-preventive wrist strap, ensuring that it makes
good skin contact. Connect the clip to an unpainted surface
of the chassis frame to safely channel unwanted ESD voltages
to ground.
• To properly guard against ESD damage and shocks, the wrist
strap and cord must operate effectively. If no wrist strap is
available, ground yourself by touching the metal part of the
chassis.
Table 1. General conventions
Convention Meaning
Garamond blue type
Indicates a cross-reference hyperlink that points to a figure, graphic, table, or sec-
tion heading. Clicking on the hyperlink jumps you to the reference. When you
have finished reviewing the reference, click on the Go to Previous View
button in the Adobe® Acrobat® Reader toolbar to return to your starting point.
Futura bold type Commands and keywords are in boldface font.
Futura bold-italic type Parts of commands, which are related to elements already named by the user, are
in boldface italic font.
Italicized Futura type Variables for which you supply values are in italic font
Futura type Indicates the names of fields or windows.
Garamond bold type Indicates the names of command buttons that execute an action.

About this guide Model 3324 User Guide
12
Mouse conventions
The following conventions are used when describing mouse actions:
< > Angle brackets indicate function and keyboard keys, such as <SHIFT>, <CTRL>,
<C>, and so on.
[ ] Elements in square brackets are optional.
{a | b | c} Alternative but required keywords are grouped in braces ({ }) and are separated
by vertical bars ( | )
blue screen Information you enter is in blue screen font.
screen Terminal sessions and information the system displays are in screen font .
node The leading IP address or nodename of a SmartNode is substituted with
node in
boldface italic font.
SN The leading SN on a command line represents the nodename of the SmartNode
# An hash sign at the beginning of a line indicates a comment line.
Table 2. Mouse conventions
Convention Meaning
Left mouse button This button refers to the primary or leftmost mouse button (unless you have
changed the default configuration).
Right mouse button This button refers the secondary or rightmost mouse button (unless you have
changed the default configuration).
Point This word means to move the mouse in such a way that the tip of the pointing
arrow (referred to as the
cursor ) on the screen ends up resting at the desired loca-
tion.
Click Means to press and release the left or right mouse button one time quickly (as
instructed in the procedure). Make sure you do not move the cursor while clicking
a mouse button.
Double-click Means to press and release the same mouse button two times quickly. Make sure
you do not move the cursor while clicking a mouse button.
Drag This word means to place the cursor and then hold down the left or right mouse
button (as instructed in the procedure) as you move the mouse to a new location.
When you have moved the cursor to the desired location, you can release the
mouse button.
Table 1. General conventions
Convention Meaning

13
Chapter 1 General Information
Chapter contents
Model 3324 overview ............................................................................................................................................14
Hardware overview................................................................................................................................................15
Ethernet uplink ...............................................................................................................................................16
POTS/ISDN ..................................................................................................................................................16
VDSL ports ....................................................................................................................................................17
RS-232 control port ........................................................................................................................................17
Power system ..................................................................................................................................................17
Management services ......................................................................................................................................17
LED display ....................................................................................................................................................17
Approvals ..............................................................................................................................................................18

1 • General Information Model 3324 User Guide
14 Model 3324 overview
Model 3324 overview
The Patton Model 3324 VDSL (see figure 1) networking solution delivers cost-effective, high-performance
broadband access to multi-unit buildings (hotels, apartments, and multi-tenant unit office buildings) and
enterprise campus environments such as factories, educational campuses, and medical facilities. VDSL technol-
ogy dramatically extends Ethernet over existing Category 1, 2, or 3 wiring at speeds from 5, 10, or 15 Mbps
(full duplex) and distances up to 4,921, 3,937, or 3,281 feet (1,500, 1,200, or 1,000 meters). The Model 2234
delivers broadband service on the same infrastructure as plain old telephone service (POTS), digital telephone
service, and ISDN service. In addition, VDSL supports modes compatible with symmetric digital subscriber
line, allowing service providers to provision VDSL to buildings where broadband services may already exist.
The VDSL solution includes Patton Model 3324 (VDSL Access Concentrator), and Model 1058/CP (VDSL
Customer Premise Modem).
The VDSL solution delivers everything needed to quickly deploy an Ethernet-based network with the perfor-
mance required to deliver high-speed Internet access at much greater distances and drive services like IP tele-
phony and audio/video streaming. With this technology, a broad range of customers can benefit from lower
operating Costs and rapid deployment. The VDSL solution provides multicast, Layer 2 quality of service
(QoS), Link Aggregation (LACP) dynamic trunking groups, security, GVRP, IGMP for VOD (Video on
demand) and SNMP RMON management and Web-based Switch network management.
The Patton Model 3324 is a bridge between external Internet backbone through a router for IP sharing and the
building 110D telephone rack or telephone box. It utilizes the available telephone wire to enable high-speed
Internet access to building’s residents. The Patton Model 3324 uses the phone line networking technology
endorsed by the VDSL (Very High Data Rate DSL), and the 3324 utilizes already existing telephone wire to
deliver 5/10/15 Mbps Internet access on each RJ-21 port. This gives users a low-cost, end-to-end solution that
eliminates the need to train installation teams on multiple systems.
Figure 1. Model 3324 Carrier-Class Aggregator

Hardware overview 15
Model 3324 User Guide 1 • General Information
Hardware overview
The Model 3324 combines networking and voice services by concentrating 24 x VDSL (Network) and 24 x
POTS/ISDN ports for transport over a single phone grade twisted pair in a single 1U managed chassis. The
3324 (see figure 2 and figure 3 on page 16) comprises a 1U-high 19-inch wide chassis that contains a mother-
board and on-board POTS/ISDN splitter and an AC power supply. A full set of LEDs are present on the chas-
sis front panel along with all electrical connections. This makes both quick status checks and network
connections a snap. LEDs are present to monitor the Ethernet uplink link and activity, VDSL link and activity,
and power connections. One IEC-320 receptacle is provided for AC power input.
Figure 2. Model 3324 front panel connectors and LEDs

1 • General Information Model 3324 User Guide
16 Hardware overview
Figure 3. Model 3324 rear panel power input connector
Ethernet uplink
The Model 3324 includes two Ethernet uplink ports. Uplink connections can be made either through the
Ethernet GBIC (fiber connection) or via RJ-45 (copper connection)
Also included are:
•One Ethernet expansion slot for cascading up to four Model 3324’s
•Auto-sensing 10/100/1000Base-TX full or half-duplex
•Auto MDI-X
•Link and activity indicators
POTS/ISDN
The Model 3324 includes one RJ-21 connector for up to 24 POTS/ISDN connections.
Also included are:
•>>>>>>>>>>>>>>>>
•>>>>>>>>>>>>>>>

Hardware overview 17
Model 3324 User Guide 1 • General Information
VDSL ports
The 24 VDSL ports operate at data-rates up to 15 Mbps symmetrical and are accessible via the RJ-21X 50-pin
telco connector. Each port uses one twisted-pair (2-wires) for symmetrical communication. The VDSL ports
concentrate the POTS/ISDN (voice) and data into one output on the VDSL ports. Other features include:
•QAM line encoding
•"Plug-and-Play" automatic configuration between the Model 3324 VDSL aggregator and the VDSL
CPE modems
•Built-in surge protection
•VDSL configuration parameters and line status indicators
•Bandwidth management (speed rate control) from 100 kbps to 5/10/15 Mbps
•Signal-to-noise ratio (SNR) for checking wiring quality and cross talk
RS-232 control port
The RS-232 port provides for initial configuration of the Model 3324. The RS-232 port supports:
•Asynchronous data rate of 9600kbps, 8 data bits, no parity, 1 stop bit, flow control none.
•An DB9 connector
•A management interface that supports VT-100 terminals
Power system
Universal-input voltage range, 100–240 VAC, 50/60 Hz via IEC-320 connectors
Management services
•Out-of-band RS-232 configuration port for management and control
•SNMP version 1 configuration management
•MIB II
•TELNET Ethernet
•Remote software upgrade via FTP/TFTP
•Built-in HTTP server for complete configuration and control using a standard Web browser
LED display
LEDs are present to monitor the Ethernet Uplink Link and Activity, VDSL Link and Activity, and Power con-
nections.
•POWER: Green LED is ON if power is being applied. If power is lost the green LED is OFF
•POST (power on self test): If LED is steady green Model 3324 is self-testing
•ACT (Receiving LEDs): LED flashes green when receiving or transmitting data
•Speed 100/Speed 1000: Steady yellow indicates communications have been set at 100 or 1000 Mbps

1 • General Information Model 3324 User Guide
18 Approvals
•FD: Steady yellow if working at full-duplex, OFF if working at half-duplex
•LINK: Steady green when the Model 3324 and CP has established a link, OFF when link is down
Approvals
The Model 3324 has achieved the following approvals and certifications:
•Safety
-UL1950 (MET)
-Industry Canada (cMET)
•RTTE Directive (CE Mark)
-EMC Directive 89/336/EEC
-Low Voltage Directive 73/23/EEC (EN 60950)
-ITU-T CTR 12
-ITU-T CTR 13
•EMC
-FCC Part 15, Subpart B, Class A
•Telecom
-FCC Part 68
-Industry Canada

19
Chapter 2 Hardware installation
Chapter contents
Introduction..........................................................................................................................................................20
Unpacking the Model 3324...................................................................................................................................20
Model 3324 chassis installation .............................................................................................................................20
Cable installation...................................................................................................................................................21
Installing the power cables—AC power supply ...............................................................................................21
Connecting the Ethernet uplink ports .............................................................................................................21
Cascading configuration ............................................................................................................................22
Optional GBIC Ethernet uplink slot ...............................................................................................................24
GBIC fiber optics ............................................................................................................................................24
Connecting the EIA-574, RS-232 configuration port (DCE configured) ........................................................24
Connecting the POTS/ISDN Ports ................................................................................................................25
Connecting the VDSL Ports ...........................................................................................................................25
Completing the hardware installation....................................................................................................................26

2 • Hardware installation Model 3324 User Guide
20 Introduction
Introduction
This chapter contains the following procedures for installing the Model 3324:
•“Unpacking the Model 3324”—lists the contents in the Model 3324 shipping container
•“Model 3324 chassis installation”—describes installing the Model 3324 on a flat surface or in a standard
19-inch rack
•“Cable installation” on page 21—describes installing the power and network interface cables
•“Completing the hardware installation” on page 26—describes testing the Model 3324 hardware to verify
that it is ready for software configuration
Unpacking the Model 3324
Inspect the shipping carton for external damage. Note any damage before removing the container contents.
Report equipment damage to the shipping carrier immediately for claim purposes. Save all packing materials in
case you need to return an item to the factory for servicing.
The Model 3324 comes with the following items:
•The Model 3324 VDSL Carrier Class Aggregator
•Install kit
-2 DB9-RJ45 (EIA-561) adapters, one to connect to the Model 3324 and one to connect to PC serial port
-1 RJ-45-to-RJ-45 cable to connect between the two adapters
•2 Rack mounting brackets
•4 Screws
•4 Plastic feet
•Model 3324 VDSL Carrier-Class Aggregator User Guide on CD-ROM
Note Power cables are shipped separately from the Model 3324 DACS.
You will need two 5-foot (1.5-meter) RJ-21 male-to-male Telco connector cables.
Model 3324 chassis installation
Do the following:
1. If you have not done so already, remove the Model 3324 from its shipping container.
Note The Model 3324 should be placed as close as possible to the termina-
tion jack provided by the Telco. Avoid installing the Model 3324 in a
location where the power cords or network interface cables could be
accidentally disconnected. The location should be well ventilated, dry,
and not in direct sunlight. Do not block the Model 3324 cooling fans.
2. If you are installing the Model 3324 in a 19-inch rack, go to step 3. Otherwise, place the Model 3324 at
the desired location, then go to “Cable installation” on page 21.