3Com DIA3CV1100-02 User Manual

Visitor and Community
Network Access
Concentrator

NSTALLATION

I

Version 2.0

G

UIDE

http://www.3com.com/

Part No. DIA3CV1100-02
Published July 2000

3Com Corporation
5400 Bayfront Plaza
Santa Clara, California
95052-8145

Copyright © 1999, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced
in any form or by any means or used to make any derivative work (such as translation, transformation, or
adaptation) without written permission from 3Com Corporation.

3Com Corporation reserves the right to revise this documentation and to make changes in content from time
to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.

3Com Corporation provides this documentation without warranty, term, or condition of any kind, either
implied or expressed, including, but not limited to, the implied warranties, terms or conditions of
merchantability, satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or
changes in the product(s) and/or the program(s) described in this documentation at any time.

If there is any software on removable media described in this documentation, it is furnished under a license
agreement included with the product as a separate document, in the hard copy documentation, or on the
removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy,
please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

If you are a United States government agency, then this documentation and the software described herein are
provided to you subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense.
Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or
as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are
provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights
only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable.
You agree not to remove or deface any portion of any legend provided on any licensed program or
documentation contained in, or delivered to you in conjunction with, this User Guide.

Portions of this documentation are reproduced in whole or in part with permission from (as appropriate).
Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may

not be registered in other countries.
3Com, the 3Com logo and SuperStack, are registered trademarks of 3Com Corporation. 3Com Facts is a

service mark of 3Com Corporation.
MS Windows, and Windows NT are registered trademarks of Microsoft Corporation. All other company and

product names may be trademarks of the respective companies with which they are associated.
Guide written by Ruth Zach and Ronald Schwarz. Illustrated by Pearl Goldberg and Ronald Schwarz. Produced

by 3Com Corporation.

ONTENTS

C

V

ISITOR AND COMMUNITY NETWORK ACCESS CONCENTRATOR

I

NSTALLATION GUIDE

About This Guide 5
System Overview 6
VCN Access Concentrator Functionality 6
Operational Controls 6
Safety Precautions 8
Précautions de Sécurité 9
Sicherheitsvorkehrungen 9
Preparing the Site for the VCN Access Concentrator 10

Installing the VCN Access Point Punch-down Block with a Patch
Panel 11

Installing the VCN Access Point Punch-Down Block Without a Patch
Panel 13

Installing the VCN Access Concentrator 16

Mounting the VCN Access Concentrator in the 19-inch Rack 16
Connecting Cables to the Rack Via Patch Panel 18
Note on Insertion of Line Cards in the VCN Access Concentrator 21
Connecting Cables to the Rack Without a Patch Panel 21
Mounting the Ethernet Switch 24

Configuring the Ethernet Switch for the VCN Access Concentrator 24
Powering Up the Ethernet Switch 33
Powering Up the VCN Access Concentrator 33

Proper Selection of Power Cord 33

Selection Du Cable D'alimentation 34

Richtige Auswahl des Stromkabels 34
Troubleshooting 35

Power-on Self Test (POST) 35

Using Front Panel LEDs to Solve Problems 36

A

P

RODUCT SPECIFICATION

I

NDEX

G

LOSSARY

3COM C

EMC S

S

AFETY STATEMENT

ORPORATION LIMITED WARRANTY

TATEMENTS

ISITOR AND

V

OMMUNITY

C

About This Guide

ETWORK

N

ONCENTRATOR INSTALLATION

C

UIDE

G

This guide contains information about the following:

■ System Overview

■ VCN Access Concentrator Functionality

■ Operational Controls

■ Safety Precautions

■ Preparing the Site for the VCN Access Concentrator

■ Installing the VCN Access Concentrator

■ Powering Up the Ethernet Switch

■ Powering Up the VCN Access Concentrator

The NCU (Network Concentration Unit) name has been changed in
Release II and is referred to as Visitor and Community Network Access
Concentrator.

A

CCESS

For more information, see the Visitor and Community Network Access
Concentrator Service Manual. VCN System documentation and software

can be obtained from the site: http://support.3com.com.

Look there under Broadband Access where you will be able to select

Download Software

To download documentation, select
product family Visitor and Community Network System.

To download software, select
and select the product family Visitor and Community Network System.

or

Find Documentation

Find Documentation

Download Software

.

and select the

; click

public area,

6 Visitor and Community Network Access Concentrator Installation Guide

System Overview

The Visitor and Community Network provides fast Internet connectivity
and fast corporate access to end-users of up to 10 Mbps full duplex, over
an existing cabling infrastructure and supports all Plain Old Telephone
Services (POTS).

The Visitor and Community Network System serves the following
applications:

■ Multiple Dwelling Units (MDU)

MDUs include apartment houses and hotels.

■

The customers that benefit include tenants and hotel guests who
receive Internet services and use e-mail over much more
convenient connections than currently possible. Business travelers
can access corporate intranets at faster speeds. IT service providers
and hotel operators can expand end-user services (video, virtual
gaming, etc.) in conjunction with billing services without forfeiting
POTS revenues. NSPs and ISPs benefit by expanding service
boundaries to E-commerce and local network applications.

■ Multiple Tenant Units (MTU)

MTUs comprise mainly office complexes.

■

In MTU application existing LAN infrastructure can be extended to
4 kilo feet to locations currently lacking LAN cabling through the
Visitor and Community Network system.

VCN Access Concentrator Functionality

Operational Controls

The function of the VCN AC is to combine data and analog voice in the
direction of the VCN APs (VCN Access Point) and to split voice and data in
the direction from the VCN APs. Analog voice (telephone) is routed to the
analog PBX. Data is transferred to the Ethernet Switch. The VCN AC
allows simultaneous transfer of voice and data, up to 10 Mbps, on each
telephone extension line.

The VCN AC works with the SuperStack II Switch 1100 and 3300.

Figure 1 and Figure 2 show the VCN AC LED indicators and connectors
on the front and back panels.

Operational Controls 7

LAN LED
LAN Port

Line LED

Power LE D

Figure 1

2

1

VCN Access Concentrator Front Panel

3 4 5 6 7 8 9101112131415161718192021222324

Local Management Access
(LMA) (hidden connectors)

Figure 2

C

VCN Access Concentrator Back Panel

From Access Points

N151

MIC

US

!

TO PBX

AC-INPUT

1
1

90 - 240 V AC

RJ-21 Connected to
the VCN AC lines

RJ-21

ac power input

Connected to
the analog PBX
lines

8 Visitor and Community Network Access Concentrator Installation Guide

Table 1 describes the front panel VCN AC indicators and connectors.

Ta b le 1 VCN AC Front Panel LEDs and Connectors

Item Type State Used to

LAN LED Green Indicate connection of the VCN AC

LAN RJ-45 port - Connect the VCN AC to the

Line LED OFF Indicate VCN AC is not connected

Flashing Green Indicate data transmission over the

Power LED OFF Indicate that the VCN AC is not

Orange Indicate that the power-on self-test

Green Indicate that the unit is functional.

Local
Management
Access (LMA)

4-pin
MiniDin
connectors
(hidden)

- Connect ASCII terminal for

to the Ethernet Switch.

Ethernet Switch.

to the line.

VDSL line.

powered.

failed if LED remains orange for
more than 30 seconds.

monitoring and troubleshooting.
The cover must be removed to
attain access to the hidden
connectors. Refer to the Visitor and
Community Network Access
Concentrator for details about
troubleshooting, monitoring and
downloading software.

Safety Precautions

Please follow these precautions before installing the Visitor and
Community Network Access Concentrator:

WARNING:

Do not plug in, turn on or attempt to operate an obviously

damaged unit.

CAUTION:

All servicing should be undertaken ONLY by qualified service

personnel. There are no user serviceable parts inside the unit.

WARNING:

socket

CAUTION:

Be sure to unplug the power supply cord from the wall

before

attempting to remove and/or replace the power supply.

Do not operate the unit in location where the maximum

ambient temperature exceeds 40 degrees C.

Précautions de Sécurité 9

Précautions de Sécurité

CAUTION:

not obstructed.

CAUTION:

100-120 VAC or 200-240 VAC, 60/50 Hz, as indicated on the safety label
adjacent to the power inlet. Ensure that the available voltage supply at
the mains is within one of these two ranges.

AVERTISSEMENT:

brancher au secteur, ni tenter de la mettre en fonction.

ATTENTION:

personnel qualifié. L'unité ne comporte pas de pièces à remplacer par
l'utilisateur.

AVERTISSEMENT:

d'alimentation électrique de la prise de courant AVANT d'essayer de
démonter le bloc d'alimentation.

ATTENTION:

température ambiante dépasse 40 degrés C.

ATTENTION:

pas obturees.

Ensure that the chassis ventilation openings in the unit are

The power supply provided for automatic selection of either

Si l'unité est visiblement endommagée NE PAS la

Toute intervention sera effectuée UNIQUEMENT par un

Assurez vous que vous avez bien débranché le câble

Ne pas faire fonctionner l'unité dans un endroit où la

Vérifiez que les ouvertures de ventilation du châssis ne sont

Sicherheitsvorkehru
ngen

ATTENTION:

tension d'entrée (soit 100-120 V soit 200-240 V, alternatif 60/50 Hz)
comme indiqué sur l'étiquette de sécurité apposé à côté de la prise.
Assurez-vous que la tension disponible au secteur se trouve dans la plage
appropriée.

WARNUNG:

Stromnetz an, schalten diese ein oder versuchen diese zu benutzen,
wenn die Einheit klar erkennbar beschädigt ist.

VORSICHT:

Wartungspersonal durchgeführt werden. Die Einheit enthält keine Teile,
die der Benutzer selbst warten kann.

Le bloc d'alimentation sélectionne automatiquement la

Schließen Sie die Einheit

Alle Wartungsdienste sollten nur von qualifiziertem

unter keinen Umständen

an das

10 Visitor and Community Network Access Concentrator Installation Guide

Preparing the Site for the VCN Access Concentrator

WARNUNG:

Ziehen Sie den Stromstecker aus der Steckdose,

bevor

Sie

die Energieversorgung entfernen und/oder austauschen.

VORSICHT:Bedienen

Sie die Einheit

nicht

, wenn die Temperatur am

Standort 40 Grad C übersteigt.

VORSICHT:

Gewährleisten Sie, daß die Ventilationsöffnungen des Chassis

der Einheit nicht blockiert sind.

VORSICHT:

Die Energieversorgung wählt automatisch entweder 100-120
V WS oder 200-240 V WS, 60/50 Hz, wie auf dem Sicherheitsaufkleber
neben der Energiezufuhr angegeben. Gewährleisten Sie, daß die
vorhandene Stromleistung des Hauptstromnetzes innerhalb eines dieser
möglichen Bereiche liegt.

The punch-down block that connects POTS terminals to a PBX is known
as the PBX punch-down block. Figure 3 displays the infrastructure before
the Visitor and Community Network system is installed.

Figure 3 Before the VCN Access Concentrator is Installed

Room

Basement

Punch-Down Blocks

PBX

Before installing the VCN AC in the communications room, perform the
following tasks:

Install the VCN AP punch-down block in addition to the existing

1

punch-down block.
Install a rack for the VCN AC.

2

Preparing the Site for the VCN Access Concentrator 11

Installing the VCN

Access Point
Punch-down Block
with a Patch Panel

CAUTION:

technician

Installation should be performed only by a qualified

The VCN AP punch-down block, which carries both data and voice, can
be connected to an optional patch panel, which connects the circuits
between the VCN AC and punch-down blocks.

If there is no patch panel, the VCN AC unit connects directly to the VCN
AC punch-down block and VCN AP punch-down blocks.

The VCN AC unit should be installed at the PBX punch-down block
location, usually in the basement or wiring closet of a building.

The unit is installed in a 19-inch rack along with the Ethernet switch and
an optional patch panel.

There are two methods for installing the Visitor and Community Network
system:

■ With a patch panel.

■ Without a patch panel.

To install the VCN AP punch-down block when there is a patch panel,
perform the following steps:

Select the wire pairs according to their position in the RJ-11 telephone

1

connector in the rear of the VCN AP. The two outside wires comprise the
outer wire pair and the two inside wires comprise the inner wire pair, as
shown in Figure 4 and Figure 5.

Where there is only one telephone line in a room, the two wires are
connected to the inner wire pair of the phone connector shown in
Figure 4 and Figure 5. The outer wire pair of the phone connector is not
used.

The inner wire pair carries both voice and digital date.

■

12 Visitor and Community Network Access Concentrator Installation Guide

■ The outer wire pair carries only voice.

Figure 4 VCN Access Point Rear Panel

PHONE

LINE

DC-IN

Figure 5 The Four Wires of the Telephone Cable

Inner wire pair

Outer wire pair

Disconnect the punch-down Krone connector for the inner wire pair from

2

the PBX punch-down block.

The outer wire pair remains connected to the PBX punch-down block
since it will not carry data.

Connect the Krone connector of the inner wire pair to the new VCN AP

3

punch-down block, which has been added.
Connect another punch-down Krone connector from the VCN AP

4

punch-down block to the back of the patch panel.
Connect an additional punch-down Krone connector from the patch

5

panel to the PBX punch-down block to carry voice transmissions of the
inner wire pair to the PBX.

Repeat step 1 through step 5 for up to 24 telephone lines.

6

Figure 6 shows the resulting infrastructure.

Preparing the Site for the VCN Access Concentrator 13

Figure 6

VCN AP punch-down

VCN Access Point Punch-Down Block Installation with a Patch Panel

Extension 2

VCN Access Point
(VCNAP)

Ext. 1, Ext. 2

PBX

PBX punch-down

block

Note: If there is only one
extension in the room, the
wires for the second
extension are not used
and not connected to the
PBX punch down block.

Room

Basement

Wire pair

connected

to VCN AP

Ext. 1
+ Data

block

Patch Panel

Extension 1

4-wire cable

Wire pair not
connected
to VCN AP

Punch-Down Blocks

24 wire pairs

Ext. 2

24 wire pairs
Ext. 1

TO PBXFROM VCNAP

Installing the VCN

Access Point

Punch-Down Block

Without a Patch

Panel

The installed patch panel must have 48 wire connectors - 2 for each port.

To install the VCN AP punch-down block in the absence of a patch panel,
perform the following steps:

1

Select the wire pairs according to their position in the RJ-11 telephone
connector in the rear of the VCN AP. The two outside wires comprise the

14 Visitor and Community Network Access Concentrator Installation Guide

outer wire pair and the two inside wires comprise the inner wire pair, as
shown in Figure 7 and Figure 8.

Where there is only one telephone line in a room, the two wires are
connected to the inner wire pair of the phone connector shown in
Figure 7 and Figure 8. The outer wire pair of the phone connector is not
used.

■ The inner wire pair carries both voice and digital data.

■ The outer wire pair only carries voice.

Disconnect the punch-down Krone connector for the inner wire pair from

2

the PBX punch-down block.

The outer wire pair remains connected to the PBX punch-down block
since it will not carry data.

Figure 7 VCN Access Point Rear Panel

PHONE

LINE

DC-IN

Figure 8 The Four Wires of the Telephone Cable

Inner wire pair

Outer wire Pair

Connect the punch-down Krone connector of the inner wire pair to the

3

added VCN AP punch-down block. Refer to Figure 9.

Preparing the Site for the VCN Access Concentrator 15

bloc

Wire pair

connected

to VC NAP

Wire pair not
connected
to VC NAP

Ex t. 1
+ Da ta

VCN AP pun ch-down

k

Figure 9

Extension 1

Punch-Down Blocks

VCN Access Point Punch-down Block Installation without a Patch Panel

Extension 2

VCNAP

Ex t. 2

Note: If there is only one
extension in the room, the
wires for the second
extension are not used
and not connected to the
PBX punch down block.

PBX

PBX punch-down

block

4

Repeat step 1 through step 3 for up to 24 telephone lines.

Room

Basem ent

The VCN AP and PBX punch-down blocks must each have an RJ-21
connector.

16 Visitor and Community Network Access Concentrator Installation Guide

Installing the VCN Access Concentrator

Mounting the VCN

Access Concentrator

in the 19-inch Rack

Before installing the VCN AC make sure that:

■ The unit is accessible and can be connected easily.

■ Cabling is away from:

Sources of electrical noise such as radios, transmitters and

■

broadband amplifiers
Power lines and fluorescent lighting fixtures

■

■ Water or moisture cannot enter the case of the unit.

■ Air-flow is not restricted around the unit or through the vents in the

side of the switch. Make sure you provide a minimum of 2.5 cm (1
inch) clearance between the Ethernet switch and the VCN AC

It is recommended to have a ventilated or air conditioned room.

■ The VCN AC is within cable reach of both the patch panel and the

Ethernet switch for which the unit is to be attached.

Table 2 lists the accessories needed for mounting the VCN AC in the
19-inch rack.

Ta b le 2 The VCN Access Concentrator Accessory Set

No. Part Quantity

1 VCN AC unit 1
2 19-inch brackets 2
3 Handles 2
4 Screws for handles 4
5 Screws for brackets 8

In addition to the VCN AC unit, you will find a box containing the cable
kit needed to install the VCN AC.

Table 3 lists the cable kit parts.

Ta b le 3 The Cable Kit

No. Part Quantity

1 Power Cord 1
2 UTP CAT-5 Patch Cords 24
3 Flat cables (1.5 m each) with

RJ-21 connectors

2

Installing the VCN Access Concentrator 17

To mount the VCN AC:

Insert one handle into the two outermost bracket holes as shown in

1

Figure 10.
Ensure that the handle is pointing outward from the unit.

Figure 10 Fitting a Bracket for Rack Mounting

Tighten the handle from the rear with the two screws enclosed for this

2

purpose, using a number 3 Phillips screwdriver (not supplied).
Repeat steps 1 and 2 for the second handle.

3

Match the four holes of the bracket to the four mounting holes on one

4

side of the VCN AC, as shown in Figure 10.
Using the four screws enclosed for this purpose, screw the bracket to the

5

VCN AC unit.
Repeat steps 4 and 5 for the second bracket.

6

CAUTION:

You must use the screws supplied with the mounting
brackets. Damage caused to the unit by using incorrect screws invalidates
your warranty.

Insert the VCN AC into the 19-inch rack and secure with two suitable

7

screws on each side (not provided).
Ensure that ventilation holes are not obstructed.

18 Visitor and Community Network Access Concentrator Installation Guide

Connecting Cables to

the Rack Via Patch

Panel

The process of connecting cables to the rack varies depending on
whether or not a patch panel is used. The procedure of connecting the
punch-down blocks to the patch-panel is described in “Preparing the Site
for the VCN Access Concentrator” on page 10.

Back Panel Connections

To connect the back panel of the VCN AC, use the 2 flat cables with RJ-21
connectors supplied with the VCN AC.

To connect the VCN AC to the patch-panel, perform the following steps:

Connect the RJ-21 connector labeled “From Access Points” at the back of

1

the VCN AC to the “From Access Points” connector on the front of the
patch panel using one of the 50-pin twisted pair flat cables.

Connect the RJ-21 connector labeled “TO PBX” at the back of the VCN

2

AC to the “TO PBX” connector on the front of the patch panel using the
second 50-pin twisted pair flat cable.

Installing the VCN Access Concentrator 19

TO PBXFROM NAU

VCN AC

Patch Panel

Flat Cable

24 RJ-45 conn

between VC N

and the Super

Sw itch 1100/3

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SuperStack II

Sw itch 1100/3300

123 45 67 89101112131415161718192021222324

3

Front Panel Connections

Refer to “Preparing the Site for the VCN Access Concentrator” on page
10 before connecting the VCN AC to the Ethernet switch Switch through
the front.

Figure 11 displays the rack after it has been wire connected.

Figure 11 Patch Panel and the Ethernet Switch Connected to the VCN Access
Concentrator

Figure 12 shows all the connections in the network.

20 Visitor and Community Network Access Concentrator Installation Guide

Figure 12

VCN AP punch-dow n

block

24 wire pairs

VCN Access Concentrator Installed with a Patch Panel

VCN AP

Punch-Dow n Block

PBX

PBX punch-dow n

block

24 wire pairs

Room

Basement

Patch Panel

RJ-21

Connector

from VCN AP

Flat Cable

RJ-21

Connector

TO PBXFROM VCNAP

12 34 56 78 9101112131415161718192021222324

24
lines

RJ-21
Connector
to P BX

RJ-21
Connector

Ethernet Switch

9[ :[

4;[4<[4[46[

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#HQDEOHG/#OLQN#2.

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VCN AC

POWER

T1

ISP

Router

Using RJ-45 connector terminated cables, connect the VCN AC LAN ports
to the Ethernet switch.

Installing the VCN Access Concentrator 21

If your switch is the SuperStack II 1100 or 3300, connect to the front
panel ports. If your switch is not the SuperStack II 1100 or 3300, follow
the procedures for your switch.

Note on Insertion of

Line Cards in the VCN

Access Concentrator

Connecting Cables to

the Rack Without a

Patch Panel

Note the following:

The card in VCN AC slot 1 provides central management and is different
from the remaining cards. This card has a factory installed MAC address
and must not be inserted in any slot other than slot 1.

This section describes how to connect the rack without a patch panel.
The VCN AC connects directly to the VCN AP and PBX punch-down
blocks at the back with RJ-21 connectors.

Back Panel Connections

Perform the following steps to connect the VCN AC to the punch-down
blocks.

Connect one RJ-21 flat cable to the VCN AP punch-down block through

1

the RJ-21 connector labeled “FROM VCN AP”.
Connect the other RJ-21 flat cable to the PBX punch-down block through

2

the RJ-21 connector labeled “TO PBX”.

To connect the back panel of the VCN AC, use the 2 flat cables with RJ-21
connectors supplied with the VCN AC.

The pin assignments of the two RJ-21 connectors at the back of the VCN
AC must match the pin assignments of the RJ-21 connectors of the two
punch-down blocks.

To correctly align the RJ-21 connectors on the VCN AC and the
punch-down blocks, see Table 4.

Ta b le 4 Pin Assignment for the RJ-21 Connector

VCN AC Port No. First Pin Second Pin

1 1 26
2 2 27
3 3 28
4 4 29

22 Visitor and Community Network Access Concentrator Installation Guide

Ta b le 4 Pin Assignment for the RJ-21 Connector (continued)

VCN AC Port No. First Pin Second Pin

5 5 30
6 6 31
7 7 32
8 8 33
9 9 34
10 10 35
11 11 36
12 12 37
13 13 38
14 14 39
15 15 40
16 16 41
17 17 42
18 18 43
19 19 44
20 20 45
21 21 46
22 22 47
23 23 48
24 24 49

Figure 13 depicts the pin numbering scheme on the female RJ-21
connectors which are used on both the “TO PBX” and the “From Access
Points” ports on the VCN AC.

Figure 13 Female RJ-21 Connector

125

Installing the VCN Access Concentrator 23

Front Panel Connections

Refer to “Preparing the Site for the VCN Access Concentrator” on page
10 before connecting the VCN AC to Ethernet switch through the front.

Figure 14 displays the infrastructure after the VCN AC has been installed
without a patch panel.

Figure 14 The VCN Access Concentrator Unit Installed Without a Patch Panel

VCN AP

Room

24 wire pairs

Punch-Down Blocks

Basement

VCN AP punch-down

block

PBX punch-down

block

PBX

Flat Cable

VCN AC

123456789101112131415161718192021222324

3

POWER

Office Connect Router

Router

T1

24 RJ-45 connections
between the VCN A C

and the Ethernet

Switch

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Switch

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Using RJ-45 connector terminated cables, connect the VCN AC LAN ports
to the Ethernet switch.

If your switch is the SuperStack II 1100 or 3300, connect to the front
panel ports. If your switch is not the SuperStack II 1100 or 3300, follow
the procedures for your switch.

24 Visitor and Community Network Access Concentrator Installation Guide

Mounting the

Ethernet Switch

Configuring the

Ethernet Switch for

the VCN Access

Concentrator

For instructions on mounting and powering-up the SuperStack II Switch
1100, see the

SuperStack II Switch 1100/3300 User Guide.

If your switch is not a SuperStack II 1100 or 3300, follow the procedures
for your switch.

This section describes the procedure for configuring the Ethernet switch.

Sequence of Configuration

The following is the sequence of configuration actions:
Define the desired VLANs, if any, on your switch.

1

Define the MAC addresses for all of the 24 VCN AC ports and all APs

2

attached to the AC.
Connect the VCN AC.

3

Defining the VLANs after the VCN AC and AP MAC addresses may make
some of the addresses inaccessible.

The default VCN AC VLAN for management is VLAN 1 tagged.

If MAC addresses are not defined before the VCN AC is connected, the
switch will flood the entire network with the initial messages sent
through the VCN AC, since the destination addresses are unknown.

Not more than one VCN AC may be connected to a switch.

The remainder of this section describes the procedure for defining MAC
addresses for the VCN AC and VCN APs.

Inserting MAC Addresses for VCN Access Concentrator Ports

Detailed instructions are presented here for both manual and automated
procedures for the SuperStack II 1100 and 3300 Ethernet switches.

General guidance is provided for non-SuperStack switches.

Procedures for a non-SuperStack Switch

Automated procedures for non-SuperStack switches are not available. For
a non-SuperStack switch, the Manual Procedures for SuperStack II
1100/3300 serve as a general outline for manual MAC address insertion,
but the user follows the detailed instructions in the non-SuperStack

Installing the VCN Access Concentrator 25

switch user guide. Implement the MAC addresses listed in Table 5 for the
VCN AC. Repeat the procedure to define the MAC addresses of the 24
VCN APs attached to the VCN AC. Start with the lowest VCN AP MAC
address of 00-C0-DA-40-80-19 and assign addresses for up to 24 VCN
APs consecutively.

Manual Procedures for SuperStack II 1100/3300

Enter every one of the 24 VCN AC port MAC addresses through the
SuperStack II web management interface.

Refer to the SuperStack® II Switch Management Guide, and follow the
instructions in the section “Inserting Permanent Entries” for the Switch
Database dialog. You will need to use a web browser on the computer
connected to the switch.

Insert the VCN AC port MAC addresses before connecting the VCN AC to
the Ethernet switch.

To manually insert a MAC address for an VCN AC port:

From the

1

Ignore the
In the

2

Port Filter

VLAN Filter

Enter MAC Address

list box, select a port for the entry.

list box.

field, enter the MAC (Ethernet) address for the

port.
From the

3

Click the

4

Select Action Type

button.

Apply

list box, select

Insert

.

The Display Database Entries table displays the new entry.
Repeat steps 1 through 4 for every port.

5

The Display Database Entries table is not automatically updated with the
new entry.

To update the table:
From the

1

Click the

2

Select Action Type

button

Apply

list box, select Display All

.

.

Table 5 lists the MAC addresses in hexadecimal format.

26 Visitor and Community Network Access Concentrator Installation Guide

Repeat the procedure to define the MAC addresses of the 24 VCN APs.
Start with the lowest VCN AP MAC address of 00-C0-DA-40-80-19 and
assign addresses consecutively.

Ta b le 5 VCN AC Port and VCN AP MAC Addresses

VCN AC
Port No.

1 00-C0-DA-40-80-01 1 00-C0-DA-40-80-19
2 00-C0-DA-40-80-02 2 00-C0-DA-40-80-1A
3 00-C0-DA-40-80-03 3 00-C0-DA-40-80-1B
4 00-C0-DA-40-80-04 4 00-C0-DA-40-80-1C
5 00-C0-DA-40-80-05 5 00-C0-DA-40-80-1D
6 00-C0-DA-40-80-06 6 00-C0-DA-40-80-1E
7 00-C0-DA-40-80-07 7 00-C0-DA-40-80-1F
8 00-C0-DA-40-80-08 8 00-C0-DA-40-80-20
9 00-C0-DA-40-80-09 9 00-C0-DA-40-80-21
10 00-C0-DA-40-80-0A 10 00-C0-DA-40-80-22
11 00-C0-DA-40-80-0B 11 00-C0-DA-40-80-23
12 00-C0-DA-40-80-0C 12 00-C0-DA-40-80-24
13 00-C0-DA-40-80-0D 13 00-C0-DA-40-80-25
14 00-C0-DA-40-80-0E 14 00-C0-DA-40-80-26
15 00-C0-DA-40-80-0F 15 00-C0-DA-40-80-27
16 00-C0-DA-40-80-10 16 00-C0-DA-40-80-28
17 00-C0-DA-40-80-11 17 00-C0-DA-40-80-29
18 00-C0-DA-40-80-12 18 00-C0-DA-40-80-2A
19 00-C0-DA-40-80-13 19 00-C0-DA-40-80-2B
20 00-C0-DA-40-80-14 20 00-C0-DA-40-80-2C
21 00-C0-DA-40-80-15 21 00-C0-DA-40-80-2D
22 00-C0-DA-40-80-16 22 00-C0-DA-40-80-2E
23 00-C0-DA-40-80-17 23 00-C0-DA-40-80-2F
24 00-C0-DA-40-80-18 24 00-C0-DA-40-80-30

MAC Address

VCN AP
No.

MAC Address

Every VCN AC and attached VCN APs have the same set of 48 MAC
addresses.

The VCN AC connects to the Ethernet switch from the front. Connect the
VCN AC and the Ethernet switch with up to 24 RJ-45 connections, one

Installing the VCN Access Concentrator 27

for each port. All ports use the UTP CAT 5 patch cords supplied with the
VCN AC.

The MAC addresses differ only in the 2 lowest order numbers. After the
first address is entered, the user needs to change only the two right-most
numbers while entering each address.

28 Visitor and Community Network Access Concentrator Installation Guide

Automated Procedures for SuperStack II 1100/3300

The automated procedure uses the ConfApp application fetched from the
3Com web site http://support.3com.com. For information on how to
obtain the software refer to page 5. Use a PC with one of the following
Microsoft operating systems:

■ Windows 95

■ Windows 98

■ Windows 2000

■ Windows NT4

Download the ConfApp application from the web site into your PC.

Connect your PC to any IP-based network to which the switch is
connected. Figure 15 shows the station connected to an Ethernet
containing the SuperStack II switch.

Figure 15 Connection of Management Station

green

= enabled, link OK

flashing green

1x

13x

6x 7x

18x 19x

12x

334466557788991010111112

112

TCVR

2
13
1314141515161617171818191920202121222223232424

24x

3C16950

off

= disabled, link OK
= link fail

1

25x 26x

25 26 Packet
25 26 Status

2

3

4

5

Power/Self Test

768

SuperStack II
Switch 1100

Packet

12

Status
Packet
Status

To install VCN AC and VCN AP addresses at one or more SuperStack II
1100/3300 switches, perform the following steps:

Run the ConfApp application; do one of the following:

1

Double click the

■

Double click

■

■ Select

Start

ConfApp.exe

ConfApp

ConfApp.exe

>

; type the

Run

and press <Enter>.

icon in the Windows desktop.
in its folder displayed under My Computer.

ConfApp.exe

path followed by

Installing the VCN Access Concentrator 29

The

ConfApp

Figure 16 ConfApp Screen

Add

window

To select a switch, type the switch <

2

address appears in the

screen appears (Figure 16).

browser

browser window (Figure 17).

Add

IP address> in the

data field. The

IP

30 Visitor and Community Network Access Concentrator Installation Guide

Figure 17

3

Click the

Entering the Switch Address

Community

checkbox to enable changing the

field if a non-default <

a

Ty pe t h e

<Community value>

non-default value. See Figure 18.

The default

Community value

Community value>

in the

private

is

applies.

Community

.

Community

data

data field to enter a

Installing the VCN Access Concentrator 31

Figure 18

4

To be able to install the VCN AC and VCN AP MAC addresses, click

If the IP address is invalid, it appears red in the

To delete an erroneous IP address, select the address in the
window and click

Community Parameter

Remove

. See Figure 19.

browser window.

Add

Add

Add

browser

.

32 Visitor and Community Network Access Concentrator Installation Guide

Figure 19

Removing Wrong Address

To configure additional SuperStack II switches, repeat step 2 through
step 4.

5

After all switches have been selected, click

Set

. Clicking

Set

configures

switches with valid VCN AC and VCN AP IP addresses.

Switches corresponding to invalid IP addresses are not configured with
the VCN AC and VCN AP MAC addresses. Error messages appear in the
ConfApp screen when a
addresses.Similarly, attempting to

Set

operation is attempted for invalid IP

Set

a switch which is not connected to

a VCN AC results in the same error messages.

For each wrong switch address the following message appears:

Error Setting the agent.

Click OK to close the message.

At the end of the entire

Set

operation the following message appears to
inform that the set operation is complete and that switches at invalid
addresses are not configured:

End of Setting.
Agents from red lines were not set!

Erroneous switch addresses appear in red at the end of the

Set

operation.

Click OK to close the message.

Powering Up the Ethernet Switch 33

Powering Up the Ethernet Switch

Powering Up the VCN Access Concentrator

If there are no errors at the end of the entire

operation, the following

Set

message appears:

All agents were set successfully.

Click OK to close the message.

More switch addresses can be entered in the menu after each set
operation. Previously used addresses can be removed by selecting them
and clicking

Remove

When you are finished, click

. You can execute any number of set operations.

.

Close

For instructions on powering-up the SuperStack II Switch 1100/3300, see

the SuperStack II Switch 1100/3300 User Guide.

For other switches, see the corresponding user guide

The VCN AC does not have a power switch. It is powered-up once the
power cord is plugged into the back of the VCN AC and to the mains.

Proper Selection of

Power Cord

Review the following instructions for proper selection of the power cord
for this unit:

CAUTION:

Use only the power cord supplied with this unit.

If power cord(s) were not supplied with the unit, select as follows:

■

For units installed in the USA and Canada:

Select a flexible,
three-conductor power cord that is UL-listed and CSA certified, with
individual conductor wire size of #18 AWG, and with maximum
length of 4.5 meters. The power cord termination should be MEMA
Type 5-15P (three prong earthing) at one end and IEC appliance inlet
coupler at the other end.

The following types are acceptable: SV, SVE, SVO, SVT, SVTO, SVTOO,
S, SE, SO, SOO, ST, STO, STOO,SJ, SJE, SJO, SJOO, SJT, SJTOO, SP-3,
SPE-3, SPT-3, G, W.

34 Visitor and Community Network Access Concentrator Installation Guide

■ For units installed in all other countries: Select ONLY a flexible,

three-conductor power cord, approved by the cognizant safety
organization of your country. The power cord must by type HAR
(harmonized), with individual conductor wire size of 0.75 sq.mm. The
power cord termination should be a suitably-rated earthing-type plug
at on end and IEC appliance inlet coupler at the other end. Both of the
power cord terminations must carry the certification label (mark) of
the cognizant safety organization of your country.

Selection Du Cable

D'alimentation

Examinez les instructions suivantes pour sélectionner le câble
d'alimentation de l'unité.

ATTENTION:

Utilisez seulement le câble d'alimentation fourni avec

l'unité.

Au cas où un câble d'alimentation n'a pas été fourni avec l'unité,
sélectionnez le câble selon les instructions suivantes:

■

Pour les unités installées aux USA et au Canada

: Sélectionner un
câble flexible, à trois conducteurs qui se trouve dans la liste UL et est
certifié CSA; le diamètre de chaque conducteur doit être #18 AWG,
d'une longueur maximale de 4,5 mètres. Le câble doit être équipé de
prise MEMA Type 5-15P (masse triple) à une extrémité et prise
d'appareil IEC à l'autre extrémité.

Chacun des types suivants est acceptable: SV, SVE, SVO, SVT, SVTO,
SVTOO, S, SE, SO, SOO, ST, STO, STOO, SJ, SJE, SJO, SJOO, SJT,
SJTOO, SP-3, SPE-3, SPT-3, G, W.

■

Pour les unités installées dans d'autres pays

Sélectionner
UNIQUEMENT un câble flexible, à trois conducteurs, approuvé par
l'organisme approprié de sécurité. Le câble électrique DOIT ÊTRE de
Type HAR (Harmonisé), le diamètre de chaque conducteur doit être de
0,75 mm2. Une extrémité du câble doit être équipée d'une prise avec
mise à la masse appropriée IEC, l'autre d'une prise d'accouplement.
Les deux extrémités du câble doivent comporter les marques de
l'organisme de sécurité du pays correspondant.

Richtige Auswahl des

Stromkabels

Lesen Sie die nachstehenden Anweisungen zur Auswahl des Stromkabels
für diese Einheit genauestens.

VORSICHT:

Verwenden Sie ausschließlich die Stromkabel, die mit dieser

Einheit geliefert werden.

Troubleshooting 35

Falls KEIN(E) Stromkabel mit der Einheit geliefert wurden, wählen Sie
unter den nachstehend genannten Möglichkeiten aus:

Troubleshooting

■

Für Einheiten, die in den U.S.A. und Kanada installiert werden:

Wählen Sie ein flexibles drei-phasiges Stromkabel mit individueller
Kabeldrahtgröße der Nr. 18 AWG und mit einer maximalen Länge von
4,5 Metern. Das Kabel muß in der IL-Liste geführt werden und von
CSA zugelassen sein. Das Kabel sollte an einem Ende mit einem
Stecker des Typs MEMA 5-15P (drei-polige Erdung) ausgestattet sein
und am anderen Ende mit einem IEC Gerätestecker.

Die folgenden Typen sind akzeptierbar: SV, SVE, SVO, SVT, SVTO,
SVTOO, S, SE, SO, SOO, ST, STO, STOO, SJ, SJE, SJO, SJOO, SJT,
SJTOO, SP-3, SPE-3, SPT-3, G, W.

■

Für Einheiten, die in anderen Ländern installiert werden:

wählen
Sie AUSSCHLIESSLICH ein flexibles, drei-phasiges Stromkabel, das in
Ihrem Land durch die zuständige Organisation für
Sicherheitsbestimmungen genehmigt ist. Das Stromkabel MUSS vom
Typ HAR (harmonisiert) mit einer individuellen Größe von 0,75 mm2
sein. Das Kabel sollte mit einem geeigneten Stecker mit Erdung an
einem Ende ausgestattet sein und mit einem IEC Gerätestecker am
anderen Ende. Beide Kabelenden müssen einen Zulassungsaufkleber
der zuständigen Organisation für Sicherheitsbestimmungen Ihres
Landes aufweisen.

Power-on Self Test

(POST)

When the VCN AC is powered-up, each port of the VCN AC starts
immediately the power-on self test (POST) sequence; the POWER LED
turns orange. If the VCN AC is not powered, the power LED remains OFF.
Check the power connections to ensure that the unit is connected to an
ac power source.

The power-on self test runs individually for each VCN AC port and it
verifies that every component of the port is fully functional. The power-on
self test lasts for 30 seconds, during which time the power LED is orange.
If the power-on self test is successfully completed, the power

LED for
each port turns green. If the power-on self test detected a port failure,
the power LED of that port remains orange. In this case, contact your
supplier.

36 Visitor and Community Network Access Concentrator Installation Guide

Check the front panel LEDs to determine each port’s status during the
POST as presented in Table 6.

Ta b le 6 Determining the VCN AC Port Status During the 30-second Self Test

State LAN Line Power Notes

Off Off Off Off VCN AC is not connected to a

Power-on On Off Orange
Port failure Off/On Off/On On in

Orange

The normal VCN AC port status are presented in Table 7.

Ta b le 7 Normal VCN AC Port Status

LAN State Line State Power State

If a port is connected Green Green Green
If a port is not connected Off Off Off

power source or failed.

More than 30-seconds since
power-on.

Using Front Panel

LEDs to Solve

Problems

Use the front panel LEDs to determine the status of a VCN AC port after
POST.

Ta b le 8 VCN AC Port LED Indications following POST

Problem Solution

The port power LED
remains Off after
power connection

The power LED
remains orange for
longer than 30
seconds.

The LINE LED is not
green

Check the main power cable connections. Plug in the power
cable if necessary.

A hardware fault has been detected at this port.
Power the VCN AC off and than on. If the problem persists,

contact your supplier.

Check the line connection. If the line connections are
appropriate, the local modem is not functioning.

Power the VCN AC off and than on. If the problem persists,
contact your supplier.

Troubleshooting 37

Ta b le 8

Problem Solution

The LAN LED is off Check the Ethernet cable. The problem could be in the VCN

VCN AC Port LED Indications following POST

AC or in the Ethernet switch.
1 Check that the RJ-45 cable between the VCN AC and the

Ethernet switch is connected.

2 If the Ethernet LED is still off, replace the RJ-45 cable.
3 If after the cable has been replaced, the VCN AC Ethernet

LED is still off, use an alternative port.

4 If, after the cable has been replaced, the Ethernet switch

Ethernet LED is off, use an alternative port on the switch.

5 If the problem persists, contact your supplier.

38 Visitor and Community Network Access Concentrator Installation Guide

A

RODUCT

P

Line Data Rate up to 10 Mbps, symmetric.
Range Up to 4000 ft
Cabling CAT1 to CAT5
Voice Dial Tone, Toll Quality, PBX features support
Power requirements

Mains 110W for 110V (steady state, full traffic)

Standards Compliance

Safety UL 1950

EMC FCC 47 CFR part 15, Class A

Ethernet IEEE 802.3, 802.1q

Private Branch
Exchange (PBX)

Management

Interface
Agency Certifications UL, C-UL
Environmental

Operating

Temperature

Relative humidity 95% non-condensing

PECIFICATION

S

120W for 220V (steady state, full traffic)

90-240 VAC, 47-60 Hz, 120 W.

C-UL, FCC/ICES
EN60950

AS/NZS 3548
VCCI Class A
CISPR22 Class A
CAN/CSA-CISPR22 Class A

1536 bytes maximum frame length
Analog

1 RS-232 port on each CO Card

0°- 60°C

40 P

RODUCT SPECIFICATION

NDEX

I

41

NDEX

I

Numbers

4-pin MiniDin connectors 8
4-wire routing 11 to 12, 13 to 14
4-wire support 11 to 12, 13 to 14

A

ac power source 35
aligning

RJ-21 connectors 21

ASCII terminal 8

B

back panel connection 21

C

cable kit

for installation 16

connecting

back panel of VCN AC 18
cables to rack via patch panel 18

connecting cables to rack

without patch panel 21

D

default VLANs 24
download documentation

web site 5

download software

web site 5

E

Ethernet switch configuration,sequence of 24

F

four wire routing 11 to 12, 13 to 14
four wire support 11 to 12, 13 to 14
front panel connection 19

H

hidden connectors 7

I

inserting

MAC address for a port 24

installing

VCN AC 10, 16
VCN AP punch-down block 11

Visitor and Community Network System 11
ISP 6
IT service providers 6

L

Local Management Access,LMA 8

M

MAC address

hexadecimal format 25

inserting for a port 24
mounting

accessories needed 16
mounting VCN AC in 19-inch rack 16
multiple dwelling units 6
multiple tenant units 6

N

NSP 6

O

operational controls 6

P

patch panel 11

optional 11
PBX

punch-down block 10, 11, 12, 21
POTS 6
POWER LED 35
powering up

SuperStack II Switch 1100/3300 33

VCN AC 33
power-on self test,POST 35
punch-down

Krone connector 12, 14
punch-down block

NDEX

42 I

PBX 10
VCN AP 11

R

RJ-21 connectors 18

alligning correctly 21
female numbering scheme 22

RJ-45 connections 26

S

safety precautions 8
sequence of Ethernet switch configuration 24
SuperStack II 1100/3300

connecting VCN AC 24

mounting 24
SuperStack II Switch 1100 and 3300 6
SuperStack II Switch 1100/3300

powering up 33

V

VCN AC

accessory set 16

mounting in 19-inch rack 16

powering up 33
VCN AC port status

after POST 36

POST 36
VCN AP

punch_down block 11
VCN AP punch-down block

installing 11
Visitor and Community Network 6
Visitor and Community Network System 6

installing 11
VLANs

default 24

LOSSARY

G

Alternating Current. Electric current that reverses its direction of flow

ac

periodically according to frequency measured in hertz, or cycles per
second.

Central Office. A card in the VCN AC chassis; the card provides an

CO

Ethernet port and an LMA port; another name for the Line Card (LC).

LOSSARY

G

43

EMC

HDLC

Hz

ID

ISP

IT

Krone connectors

LAN

LED

Electromagnetic compatibility

High-level Data Link Control. HDLC is a bit oriented, synchronous
protocol that applies to the data-link message packaging layer (layer 2
of the ISO/OSI model) for computer communications. messages are
transmitted in units called frames, which contain differing amounts of
data but which must be organized in a particular way.

Abbreviation for hertz, electrical cycles pr second.

Identifier used for the management login procedure.

Internet service Provider. A business that supplies Internet connectivity
services to individuals, businesses and other organizations within a local
area.

Information Technology

Connectors on patch cords used to connect or jumper patch panels

Local Area Network. A group of computers and other devices dispersed
over a relatively limited area and connected by a communications link
that enables every device to interact with any other on the network.

Light Emitting Diode. A semi-conductor device that converts electrical
energy into light, used, for example, for the activity lights on the VCN
AC and VCN AP units and appears in green or orange.

LMA

Local Management Access.

44 G

LOSSARY

MAC

MAC address

Mbaud

Mbps

MiniDIN

NA

NAT

NAU

Media Access Control. A protocol that defines the way workstations
gain access to transmission media, most widely used in reference to
LANs. For IEEE LANs, the MAC layer is the lower sublayer of the data
link layer protocol.

An address used by the MAC data link sublayer protocol.

Megabaud

Megabits per second.

A connector which connects the VCN AC to the Local Management
Interface.

Not Applicable. Wherever this appears, it means that the specified
condition is irrelevant for the case mentioned.

Network Address Translation. The process of converting between IP
addresses used within an Intranet or other private network and Internet
IP addresses. This approach makes it possible to use a large number of
addresses within the local Intranet without depleting the limited
number of available numeric Internet IP addresses.

Network Access Unit. In this case it is the unit installed in a room which
enables both voice and high speed data services simultaneously on the
existing telephone line. Another name for the VCN AP.

NCU

NSP

POTS

Vac

VCN

VCN AC

VCN AP

Vdc

Network Concentration Unit. Another name for the VCN AC.

Network Service Provider

Plain Old Telephone Service. Basic dial telephone connections to the
public switched network, without any added features or functions.

Volts Alternating Current. The measure of the peak-to-peak voltage
swing of an electrical signal.

Visitor and Community Network. The system that deploys the VCN
Access Concentrator and the VCN Access point(s).

VCN Access Concentrator, formerly called NCU.

VCN Access Point, formerly called NAU.

Voltage of direct current.

LOSSARY

G

45

VDSL

Very high bit rate Digital Subscriber Line. The data line which connects
the VCN AC to the VCN AP unit. Operates at a rate of 1-10 Mbps.

46 G

LOSSARY

3COM C

ORPORATION LIMITED WARRANTY

This warranty applies to customers located in the United States, Australia, Canada (except Quebec), Ireland,
New Zealand, U.K., and other English language countries, and countries for which a translation into the local
language is not provided

ARDWARE

H

OFTWARE

S

EAR

Y

2000 W

ARRANTY

3Com warrants to the end user (“Customer”) that this hardware product will be free from defects in
workmanship and materials, under normal use and service, for the following length of time from the date of
purchase from 3Com or its authorized reseller:

Ninety (90) days
3Com’s sole obligation under this express warranty shall be, at 3Com’s option and expense, to repair the

defective product or part, deliver to Customer an equivalent product or part to replace the defective item, or
if neither of the two foregoing options is reasonably available, 3Com may, in its sole discretion, refund to
Customer the purchase price paid for the defective product. All products that are replaced will become the
property of 3Com. Replacement products may be new or reconditioned. 3Com warrants any replaced or
repaired product or part for ninety (90) days from shipment, or the remainder of the initial warranty period,
whichever is longer.

3Com warrants to Customer that each software program licensed from it will perform in substantial
conformance to its program specifications, for a period of ninety (90) days from the date of purchase from
3Com or its authorized reseller. 3Com warrants the media containing software against failure during the
warranty period. No updates are provided. 3Com’s sole obligation under this express warranty shall be, at
3Com’s option and expense, to refund the purchase price paid by Customer for any defective software
product, or to replace any defective media with software which substantially conforms to applicable 3Com
published specifications. Customer assumes responsibility for the selection of the appropriate applications
program and associated reference materials. 3Com makes no warranty or representation that its software
products will meet Customer’s requirements or work in combination with any hardware or applications
software products provided by third parties, that the operation of the software products will be
uninterrupted or error free, or that all defects in the software products will be corrected. For any third-party
products listed in the 3Com software product documentation or specifications as being compatible, 3Com
will make reasonable efforts to provide compatibility, except where the non compatibility is caused by a
“bug” or defect in the third party's product or from use of the software product not in accordance with
3Com’s published specifications or User Guide.

THIS 3COM PRODUCT MAY INCLUDE OR BE BUNDLED WITH THIRD-PARTY SOFTWARE, THE USE OF WHICH
IS GOVERNED BY A SEPARATE END-USER LICENSE AGREEMENT. THIS 3COM WARRANTY DOES NOT APPLY
TO SUCH THIRD-PARTY SOFTWARE. FOR THE APPLICABLE WARRANTY, PLEASE REFER TO THE END-USER
LICENSE AGREEMENT GOVERNING THE USE OF SUCH SOFTWARE.

In addition to the Hardware Warranty and Software Warranty stated above, 3Com warrants that each
product sold or licensed to Customer on and after January 1, 1998, that is date sensitive will continue
performing properly with regard to such date data on and after January 1, 2000, provided that all other
products used by Customer in connection or combination with the 3Com product, including hardware,
software, and firmware, accurately exchange date data with the 3Com product, with the exception of those
products identified at 3Com’s Web site, http://www.3com.com/products/yr2000.html, as not meeting this
standard. If it appears that any product that is stated to meet this standard does not perform properly with
regard to such date data on and after January 1, 2000, and Customer notifies 3Com before the later of April
1, 2000, or ninety (90) days after purchase of the product from 3Com or its authorized reseller, 3Com shall,
at its option and expense, provide a software update which would effect the proper performance of such
product, repair such product, deliver to Customer an equivalent product to replace such product, or if none
of the foregoing is feasible, refund to Customer the purchase price paid for such product.

Any software update or replaced or repaired product will carry a Year 2000 Warranty for ninety (90) days
after purchase or until April 1, 2000, whichever is later.

BTAINING WARRANTY

O

ERVICE

S

Customer must contact a 3Com Corporate Service Center or an Authorized 3Com Service Center within the
applicable warranty period to obtain warranty service authorization. Dated proof of purchase from 3Com or
its authorized reseller may be required. Products returned to 3Com’s Corporate Service Center must be
preauthorized by 3Com with a Return Material Authorization (RMA) number or User Service Order (USO)
number marked on the outside of the package, and sent prepaid and packaged appropriately for safe
shipment, and it is recommended that they be insured or sent by a method that provides for tracking of the
package. Responsibility for loss or damage does not transfer to 3Com until the returned item is received by
3Com. The repaired or replaced item will be shipped to Customer, at 3Com’s expense, not later than thirty
(30) days after 3Com receives the defective product.

3Com shall not be responsible for any software, firmware, information, or memory data of Customer
contained in, stored on, or integrated with any products returned to 3Com for repair, whether under
warranty or not.

Dead- or Defective-on-Arrival. In the event a product completely fails to function or exhibits a defect in
materials or workmanship within the first forty-eight (48) hours of installation but no later than thirty (30)
days after the date of purchase, and this is verified by 3Com, it will be considered dead- or
defective-on-arrival (DOA) and a replacement shall be provided by advance replacement. The replacement
product will normally be shipped not later than three (3) business days after 3Com’s verification of the DOA
product, but may be delayed due to export or import procedures. The shipment of advance replacement
products is subject to local legal requirements and may not be available in all locations. When an advance
replacement is provided and Customer fails to return the original product to 3Com within fifteen (15) days
after shipment of the replacement, 3Com will charge Customer for the replacement product, at list price.

ADDITIONAL SERVICES Telephone Support, with coverage for basic troubleshooting only, will be provided for ninety (90) days from

the date of purchase, on a commercially reasonable efforts basis. Telephone support is available from 3Com
only if Customer purchased this product directly from 3Com, or if Customer’s reseller is unable to provide
telephone support. Please refer to the Technical Support appendix in the user guide for telephone numbers.

3Com’s Web and Bulletin Board Service are available at no charge, and provide software and firmware
upgrades, a bug list, and technical information about 3Com products.

Software updates, consisting of software and firmware upgrades, software update notifications, and the
latest code download through the 3Com Software Library, will be provided for ninety (90) days from the date
of purchase. To qualify for this software updates service, Customer must register on the 3Com Web Site and
provide date of product purchase, product number, and serial number.

WARRANTIES EXCLUSIVE IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY FOR

BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE
PAID, AT 3COM’S OPTION. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND
REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS,
EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING
WARRANTIES, TERMS, OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
SATISFACTORY QUALITY, CORRESPONDENCE WITH DESCRIPTION, AND NONINFRINGEMENT, ALL OF
WHICH ARE EXPRESSLY DISCLAIMED. 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO
ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, OR
USE OF ITS PRODUCTS.

3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT
THE ALLEGED DEFECT OR MALFUNCTION IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY
CUSTOMER’S OR ANY THIRD PERSON’S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING,
UNAUTHORIZED ATTEMPTS TO OPEN, REPAIR, OR MODIFY THE PRODUCT, OR ANY OTHER CAUSE BEYOND
THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING, POWER CUTS OR OUTAGES,
OTHER HAZARDS, OR ACTS OF GOD.

IMITATION OF LIABILITY

L

TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY
LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL,
CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR
PROFITS, LOSS OF BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL LOSS ARISING OUT
OF OR IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, OR
INTERRUPTION OF ITS PRODUCTS, EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES, AND LIMITS ITS LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE
PURCHASE PRICE PAID, AT 3COM’S OPTION. THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE
AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.

ISCLAIMER

D

Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or the
limitation of incidental or consequential damages for certain products supplied to consumers, or the
limitation of liability for personal injury, so the above limitations and exclusions may be limited in their
application to you. When the implied warranties are not allowed to be excluded in their entirety, they will be
limited to the duration of the applicable written warranty. This warranty gives you specific legal rights which
may vary depending on local law.

GOVERNING LAW This Limited Warranty shall be governed by the laws of the State of California, U.S.A. excluding its conflicts of

laws principles and excluding the United Nations Convention on Contracts for the International Sale of
Goods.

3Com Corporation

5400 Bayfront Plaza
P.O. Box 58145
Santa Clara, CA 95052-8145

[phone]
January 15, 2000

EMC S

TATEMENTS

LASS

FCC C

TATEMENT

S

CSA S

VCCI S

EMC D

TATEMENT

S

A V

TATEMENT

TATEMENT

IRECTIVE COMPLIANCE

ERIFICATION

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. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial installation. 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 the user’s own expense.

Changes or modifications not expressly approved by 3Com could void the user’s authority to operate this
equipment.

This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment
Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur
du Canada.

This is a Class A product based on the standard of the Voluntary Control Council for Interference by
Information Technology Equipment (VCCI). If this equipment is used in a domestic environment, radio
disturbance may arise. When such trouble occurs, the user may be required to take corrective action.

This equipment was tested and found to conform to the Council Directive 89/336/EEC for electromagnetic
compatibility. Conformity with this Directive is based upon compliance with the following harmonized
standards:

■ EN 55022 Limits and Methods of Measurement of Radio Interference

■ EN 50082-1 Electromagnetic Compatibility Generic Immunity Standard:

Warning: This is a Class A product. In a domestic environment, this product may cause radio interference, in
which case you may be required to take adequate measures.

Residential, Commercial, and Light Industry

USTRALIAN COMPLIANCE

A

S

AFETY STATEMENT

OLTAGE DIRECTIVE

LOW V

OMPLIANCE

C

This product conforms to the EMC Frameworks and meets the Class A limits of AS3548.

This equipment was tested and found to conform to the Council Directive 72/23/EEC for safety of electrical
equipment. Conformity with this Directive is based upon compliance with the following harmonized
standard:

EN 60950 Safety of Information Technology Equipment