3C16751_booklet.book Page i Tuesday, July 13, 1999 11:29 AM
OfficeConnect® Dual Speed Hub 16
User Guide (3C16751A)
3C16751_booklet.book Page ii Tuesday, July 13, 1999 11:29 AM
3Com Corporation
■
5400 Bayfront Plaza
Copyright © 1999, 3Com Technologies. 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 Technologies.
3Com Technologies reserves the right to revise this documentation and to make
changes in content from time to time without obligation on the part of 3Com
Technologies to provide notification of such revision or change.
3Com Technologies 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.
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 OfficeConnect are registered trademarks of
3Com Corporation.
■
Santa Clara, California
■
95052-8145
Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of
Microsoft Corporation. Novell and NetWare are registered trademarks of
Novell, Inc.
All other company and product names may be trademarks of the respective
companies with which they are associated.
Year 2000 Compliance: For information on Year 2000 compliance and 3Com
products, visit the 3Com Year 2000 Web page:
http://www.3com.com/products/yr2000.html
Environmental Statement: Please recycle this user guide after use.
Please e-mail any comments about this document to 3Com at:
pddtechpubs_comments@3Com.com. Please include the document title
(OfficeConnect Dual Speed Hub 16 User Guide), part number
(DUA1675-1AAA02) and, if appropriate, the page number.
3C16751_booklet.book Page 3 Tuesday, July 13, 1999 11:29 AM
Introduction 5
Environmental Statements 18
End Of Life Statement 18
Regulated Materials Statement 18
Environmental Statement about the Documentation 18
Environmental Statement about the Product Packaging 18
Creating your Network 6
Dual Speed Hub 16—Front 6
Dual Speed Hub 16—Rear 7
Before You Start 8
Workstation Connections 8
Twisted Pair (TP) Cables 8
Hub Connections 8
Stacking the Units Together 9
The Rubber Feet 9
The Stacking Clip 9
Positioning Your Hub 10
Securing Your Hub 10
Connecting Workstations and Other Equipment to Your Hub 11
Connecting Another OfficeConnect Hub 11
Fast Ethernet (100Mbps) Configuration Rules 11
Ethernet (10Mbps) Configuration Rules 12
Making the Connection to Another Hub 13
Checking Hub Connections 13
Spot Checks 13
Important Safety Information 19
Wichtige Sicherheitshinweise 20
Consignes importantes de sécurité 21
Technical Support 22
Online Technical Services 22
World Wide Web Site 22
3Com Knowledgebase Web Services 22
Support from Your Network Supplier 23
Support from 3Com 23
Returning Products for Repair 26
3Com Corporation Limited Warranty 27
Electromagnetic Compatibility 30
Problem Solving 14
Networking Terminology 16
Dimensions and Standards 17
Dimensions and Operating Conditions 17
Standards 17
3
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4
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INTRODUCTION
Welcome to the world of networking with 3Com® . In the
modern business environment, communication and sharing
information is crucial. Computer networks have proved to
be one of the fastest modes of communication but, until
recently, only large businesses could afford the networking
advantage. The OfficeConnect® product range from 3Com
has changed this, bringing networks to the small office.
If you wish to extend an existing Ethernet network into Fast
Ethernet, adding a Dual Speed Hub 16 can offer a more
cost-effective migration path than adding both a 100Mbps
hub and a 10/100Mbps switch.
Figure 1
Small Network With OfficeConnect Hub
OfficeConnect
Dual Speed Hub 16
The OfficeConnect Dual Speed Hub 16 is ideal for creating
small networks. It is compact and attractively designed for
desktop use and can be used with other OfficeConnect
products. This product forms part of the OfficeConnect
range which neatly stack together with the OfficeConnect
stacking clip.
The OfficeConnect Dual Speed Hub 16 is an easy-to-use
Class II hub (repeater) with sixteen 10/100BASE-TX ports. It
allows you to set up a network with both Ethernet
(10Mbps) and Fast Ethernet (100Mbps) workstations and
other devices (a Class II hub can be connected to another
Fast Ethernet hub, a Class I hub cannot).
10Mbps
100Mbps
If you need to connect more workstations, simply use the
stacking clip to connect another OfficeConnect hub to form
a stack.
When referring to the OfficeConnect Dual Speed Hub 16,
this guide uses the term ‘Hub’. Each port on the Hub can
be connected to either a 10BASE-T (Ethernet) or a
100BASE-TX (Fast Ethernet) device. The port senses the
speed of the connected equipment and operates at the
appropriate speed.
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CREATING YOUR NETWORK
Dual Speed Hub 16—Front
Alert LED
Power LED
Collision LEDs
Port Status LEDs
orange
Off when the Hub is operating
correctly. Lit for a short period of
time after power on, for self test.
If the LED is continuously lit, there
may be a problem. Refer to the
“Problem Solving” section.
green
Indicates that
the power
supply to the
Hub is
present.
yellow
Flash each time a
collision is detected on
the Hub's 100Mbps or
10Mbps segment.
Collisions are a normal
part of network
operation.
green (100Mbps link) / yellow (10Mbps link)
If the LED is on, the link between the port and the
next piece of network equipment is OK. If the LED is
off, nothing is connected, or the connected device is
switched off, or there is a problem with the
connection (refer to the “Problem Solving” section).
If flashing, the port is partitioned, possibly due to a
network loop.
Port Status
Alert
Power
Network Utilization
100M
1
2
3
4
5
6
7
8
Collision
9
10
11
12
13
14
15
16
100M
1%
10M
2%
3%
6%
12% 25% 50% 80%
10M
OfficeConnect Dual Speed Hub 16
Green = 100M Yellow = 10M Flash = Partitioned
6
Network Utilization
LEDs
green / yellow / orange
(top row:100Mbps;
bottom row:10Mbps)
Indicate how much the
100Mbps and 10Mbps
segments of your
network are being used.
3C16751_booklet.book Page 7 Tuesday, July 13, 1999 11:29 AM
Dual Speed Hub 16—Rear
10/100BASE-TX
5V DC
4A MAX
Uplink/Normal
8X
1X
16
9X
Power Adapter socket
Uplink/Normal switch
Sixteen 10/100BASE-TX ports
Only use the power adapter
that is supplied with this
OfficeConnect Dual Speed
Hub 16. Do not use any other
adapter.
Affects the operation of port 16.
If you are connecting another
hub to port 16, set to Uplink (in),
otherwise set to Normal (out).
Refer to the “Connecting
Another OfficeConnect Hub”
section.
Use suitable TP cable with RJ-45
connectors. You can connect the Hub
to any workstation or other
equipment that has a 10BASE-T or
100BASE-TX port. Each port is capable
of autosensing for 10Mbps or
100Mbps operation.
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3 One suitable TP cable for each workstation.
Before You Start
In order to comply with the 10BASE-T standard, ports
designed for workstation connections have been
marked with the graphical symbol ‘x’. This denotes a
crossover in the port’s internal wiring, for example 1x,
2x, 3x...
Your OfficeConnect hub comes with:
■
One power adapter for use with the OfficeConnect hub.
■
A Product Registration card for you to fill out and return.
■
Four rubber feet.
■
A stacking clip.
Twisted Pair (TP) Cables
■
Two unit labels and eight cable ties.
■
An OfficeConnect Network Assistant CD-ROM.
To connect your workstations and other equipment to the
Hub, use ‘straight-through’ TP cables with RJ-45 connectors
(all OfficeConnect products use RJ-45 type connectors). A
‘straight-through’ cable is one where each pin of one
connector is connected to the same pin of the other
connector. Cables can be shielded (screened) or unshielded;
we recommend that you use shielded cable. Cables used for
100BASE-TX or 10/100BASE-TX connections must be data
grade (Category 5). Your supplier should stock suitable
cables.
The extra parts mentioned in the next section are not
supplied with the hub.
Workstation Connections
To connect workstations or other equipment to your hub,
you need:
1 One 10BASE-T,
10/100BASE-TX, or
100BASE-TX adapter card
for each workstation.
3Com produce a range of
easy-to-install network
adapters, which provide
your workstation with a suitable connection.
The maximum length of a single cable is 100m (328ft).
Refer to “Fast Ethernet (100Mbps) Configuration Rules” on
page 11 for further information on cable lengths in a
100Mbps network.
3
2
1
Hub Connections
To connect other OfficeConnect units to your Hub, you need
one suitable TP cable for each unit.
2 An operating system (for example, Netware or Windows
95/98) with network support configured, running on
your workstations.
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To fit another unit:
Stacking the Units Together
1 Rest the second unit on top of the clip and align it with
the front of the unit below.
The Rubber Feet
2 Press down gently on the unit to secure it onto the clip,
The four self-adhesive rubber feet prevent your hub from
moving around on your desk. Only stick the feet to the
marked areas at each corner of the underside of your hub if
you intend to place the unit directly on top of the desk. Do
not fix the feet if you are going to use the clip.
ensuring the fastening pieces fit into the slots on the unit
below, as shown in Figure 2 (picture 2).
Figure 2
Stacking Your Units Together
1
Fastening
Piece
The Stacking Clip
The blue stacking clip allows you to stack your
OfficeConnect units together neatly and securely.
2
Fastening
Piece
CAUTION: You can stack up to a maximum of four
units. Smaller units must be stacked above larger
units.
To fit the clip:
To remove the clip:
1 Place your unit on a flat surface.
1 Remove the top unit together with the clip. If you hook
2 Fit the clip across the top of the unit, as shown in
a finger around one of the the fastening pieces and then
pull it gently from out of the slot, the clip should come
away with the upper unit attached to it.
Figure 2 (picture 1), ensuring that the longer sections of
the fastening pieces are pointing downwards.
3 Align the fastening pieces over the slots found on each
2 Push the clip in the center, so it bends towards the base
side of the unit.
of the unit, and then separate once the clip is loose.
4 Push the clip down gently to secure it, ensuring the
fastening pieces snap into the slots on the unit.
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Positioning Your Hub
Securing Your Hub
When installing your OfficeConnect hub, ensure:
There are two slots on the underside of the OfficeConnect
hub which can be used for wall mounting. It is
recommended that you mount the hubs with the LEDs
facing upwards to prevent dust entering the cooling vents.
■
It is out of direct sunlight and away from sources of
heat.
■
Cabling is away from power lines, fluorescent lighting
fixtures, and sources of electrical noise such as radios,
transmitters and broadband amplifiers.
■
Water or moisture cannot enter the case of the unit.
■
Air flow around the unit and through the vents in the
side of the case is not restricted. We recommend you
provide a minimum of 25.4 mm (1in.) clearance.
When wall mounting the unit, ensure that it is within
reach of the power outlet.
You need two suitable screws. Ensure that the wall you are
going to use is smooth, flat, dry and sturdy. Make two
screw holes which are 142mm (5.6in.) apart. Use the
template at the back of this guide to mark the position of
the holes. Fix the screws into the wall, leaving their heads
3mm (0.12in.) clear of the wall surface.
Remove any connections to the unit and locate it over the
screw heads. When in line, gently push the unit on to the
wall and move it downwards to secure. When making
connections, be careful not to push the unit up and off the
wall.
CAUTION: Only wall mount single units, do not wall
mount stacked units.
Also available from 3Com, is the OfficeConnect Mounting
Unit (part number 3C16765). This allows you to firmly
secure a stack of OfficeConnect devices to the desktop or
onto a shelf in a rack.
10
3C16751_booklet.book Page 11 Tuesday, July 13, 1999 11:29 AM
disconnect the cable, push the connector’s latch in and
remove it.
Connecting Workstations and Other
Equipment to Your Hub
The Hub detects all port connections, so you can start using
your network immediately. If you need more ports, simply
add another OfficeConnect hub.
WARNING: Please read the ‘Important Safety
Information’ section before you start.
WARNHINWEIS: Bitte lesen Sie den Abschnitt
‘Wichtige Sicherheitsinformationen’ sorgfältig durch,
bevor Sie das Gerät einschalten.
Connecting Another OfficeConnect Hub
You may wish to connect another OfficeConnect hub to
your Dual Speed Hub 16. Alternatively, you may wish to add
your Hub to an existing 10Mbps network. When extending
your network, you should be aware of the configuration
rules given below.
AVERTISSEMENT: Veuillez lire attentivement la
section “Consignes importantes de sécurité” avant de
mettre en route.
CAUTION: The equipment connected to the Hub
must be set to operate in auto-negotiate or half
duplex mode.
If you connect two Dual Speed Hub 16 units directly
together, the link between them operates at
100Mbps.
Connecting workstations and other equipment to your Hub
is easy. To connect a workstation to any of the Hub’s ports,
use a ‘straight-through’ TP cable. Refer to “Twisted Pair (TP)
Cables” on page 8 for further information.
Fast Ethernet (100Mbps) Configuration Rules
The Dual Speed Hub 16 is a Class II hub. You can connect
directly two Class II Fast Ethernet hubs (Class I Fast Ethernet
hubs cannot be connected directly to other Fast Ethernet
hubs). The total length of cable (A + B + C) between two
workstations, or between a workstation and a non-repeater
piece of equipment (such as a switch), must not exceed
205m (672ft). Each cable (A, B, or C) must not exceed
100m (328ft).
If you are using port 16 to connect a workstation,
ensure the Uplink/Normal switch is set to Normal
(out).
TP cables are very easy to use. To connect a cable, simply
slot the connector into the appropriate RJ-45 port. When
the connector is fully in, its latch locks it in place. To
11
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3Com recommends that the cable (B) between the Fast
Ethernet hubs is no longer than 5m (16.4ft). This allows the
maximum hub-to-workstation cable length (A or C) of 100m
(328ft) to be used, as shown in Figure 3.
Ethernet (10Mbps) Configuration Rules
You can connect a maximum of four Ethernet (10Mbps)
hubs in series between workstations, or between a
workstation and a non-repeater piece of equipment (such as
a switch). Each cable must not exceed 100m (328ft). An
example is shown in Figure 4.
Figure 3 Configuration Rules and Example of a Fast Ethernet
(100Mbps) Network
Figure 4
Switch
A
B
Example of an Ethernet (10Mbps) Network
100Mbps
link
C
Example:
Hub
10Mbps
link
Switch
Hub
Workstation
Workstation
10Mbps
Hub
Workstation
Example:
100m (328ft)
Workstation
Dual
Speed
Hub 16
5m (16.4ft)
100Mbps
Hub
100m (328ft)
Workstation
12
Dual
Speed
Hub 16
10Mbps
Hub
10Mbps
Hub
Workstation
3C16751_booklet.book Page 13 Tuesday, July 13, 1999 11:29 AM
Figure 5
Making the Connection to Another Hub
You can connect a 10BASE-T, 100BASE-TX, or another
10/100BASE-TX OfficeConnect hub to any port on the Dual
Speed Hub 16. Use the following method:
Correct Connections for OfficeConnect Hubs
OfficeConnect
Dual Speed Hub16
1 Using a straight-through cable, connect the
Uplink/Normal port of the Dual Speed Hub 16 to any of
the ports on the other hub (as shown in Figure 5). If
using an Uplink/Normal port on the other hub, set its
Uplink/Normal switch to Normal (out).
Uplin
k/No
rma
l
OfficeConnect
hub
2 Set the Uplink/Normal switch for the Uplink/Normal port
Switch set to
Uplink (in)
on the Dual Speed Hub 16 to Uplink (in).
Uplin
k/No
rma
l
Checking Hub Connections
When you have connected all the appropriate workstations
and other equipment to the Hub, power on the Hub. For
each port with a connection, a Port Status LED should be
on. If the port is operating at 100Mbps, the corresponding
LED in the upper row of Port Status LEDs is on. If the port is
operating at 10Mpbs, the corresponding LED in the lower
row is on. If neither LED is on, check your connections.
Twisted pair cable
with RJ-45 connectors.
Maximum length is 100m (328ft)
Spot Checks
At frequent intervals, visually check that:
■
The Alert LED is off — this is the best way to find out if
there are problems with your network.
■
Case vents are not obstructed.
■
Cabling is secure and not pulled taut.
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PROBLEM SOLVING
The OfficeConnect Hub has been designed to aid you when
detecting and solving possible problems with your network.
These problems are rarely serious; the cause is usually a
disconnected or damaged cable, or incorrect configuration.
If this section does not solve your problem, contact your
supplier for information on what to do next.
Alert LED continuously lit. There is a problem with the
network. Check the Port Status LEDs to try to identify the
port that is causing the problem. If one of the Port Status
LEDs is flashing, that port has partitioned, probably due to a
network loop. Examine your connections and remove the
loop. Each piece of equipment needs only one connection
to your Hub.
Perform these actions first:
■
Ensure all network equipment is powered on.
■
Power each piece of network equipment off, wait about
5 seconds and then power each one on.
If you cannot identify such a port, remove the port
connections one at a time, waiting a few seconds between
each port. If the Alert LED goes off, there is either a
network loop (see above), or an excessive amount of traffic
on that port connection. Check the Network Utilization LEDs
to see if the network is heavily loaded (over 80%). Some
pieces of network equipment operate by sending out frames
regularly. Refer to the documentation that accompanies the
piece of network equipment.
Check the following symptoms and solutions:
Power LED not lit. Check your power adapter connection.
If there is still no power, you may have a faulty power
adapter which needs replacing with an identical
OfficeConnect power adapter. Do not use any other
power adapter with the Hub.
If the Alert LED is still lit after removing all of your
connections, there may be a problem with your Hub. Turn
off the power, wait about 5 seconds and then power on the
hub. If the Alert LED comes back on continuously, contact
your supplier.
10Mbps Port Status LED lit for a port with a 100Mbps
device connected. This may be because the cable is not of
a high enough quality to carry Fast Ethernet signals (we
recommend you use a Category 5 cable), or due to a
problem with the network card (NIC) of the attached
equipment.
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Port Status LED flashing. The port is partitioned, probably
due to a network loop. Examine your connections and
remove the loop. Each piece of equipment needs only one
connection to your Hub.
Figure 6
Normal
port
Rx+
Link between the Hub and another OfficeConnect hub
not working. Check your connections; follow the
information given in the “Connecting Another
OfficeConnect Hub” section on page 11. It is likely that an
Uplink/Normal switch is incorrectly set.
RxTx+
Tx-
Port Status LED not lit for a port that has a
connection. Check that you are using a ‘straight-through’
cable which is properly connected at both ends, and is not
damaged. Refer to “Twisted Pair (TP) Cables” on page 8.
Also check that the equipment connected to the Hub is
powered on, operating correctly and contains the correct
type of connection. Refer to Figure 6 to compare the wiring
of a straight-through and a crossover cable.
15
Straight-through Cable/Crossover Cable
Pin
1
Pin
1
2
2
3
3
4
Uplink
port
Normal
port
Pin
1
Pin
1
2
2
3
3
4
4
4
5
5
5
5
6
6
6
6
7
7
7
7
8
8
8
8
Rx-
Rx+
Rx+
Rx-
Tx-
Tx+
Tx+
Tx-
Normal
port
Rx+
RxTx+
Tx-
3C16751_booklet.book Page 16 Tuesday, July 13, 1999 11:29 AM
NETWORKING TERMINOLOGY
A Network is a collection of workstations (for example,
IBM-compatible PCs) and other equipment (for example,
printers), connected for the purpose of exchanging
information or sharing resources. Networks vary in size,
some are within a single room, others span continents.
A segment is the length of cable connected to a port.
Packets are the units of information your workstations and
other equipment send to each other over the network. A
frame is the data part of the packet and can be unicast
(sent to a single device), multicast (sent to multiple
devices), or broadcast (sent to all devices).
A Local Area Network (LAN) is a network, usually in an
office, that spans no more than a single site.
Bandwidth refers to the amount of network traffic the
network can hold at any one time (information capacity)
measured in bits per second (bps). Workstations or
applications that use the network heavily are referred to as
using high bandwidth. Fast Ethernet has a higher
bandwidth than Ethernet, so it can cope with larger
amounts of traffic, which results in faster operation.
Ethernet is a type of LAN, referring to the technology used
to pass information around the network. It operates at
10Mbps (megabits per second).
Fast Ethernet is a type of LAN that runs up to 10 times
faster than standard Ethernet. It operates at 100Mbps.
10BASE-T and 100BASE-TX are the names given to the
Ethernet protocol that runs over Twisted Pair (TP) cable.
10BASE-T runs at 10Mbps whilst 100BASE-TX operates at
100Mbps. The OfficeConnect hub uses RJ-45 type
connectors for connecting your TP network.
A half duplex link allows information to flow in either
direction, but not in either direction simultaneously.
Collisions are part of normal ethernet operation and occur
if other network equipment attempts to transmit at the
same time. A sudden sustained increase in the number of
collisions may indicate a problem with the device.
A Network Loop occurs when two pieces of network
equipment are connected by more than one path. Your hub
detects this and partitions (isolates) one of its ports to
break the loop.
16
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DIMENSIONS AND STANDARDS
Dimensions and Operating Conditions
33 VA
58 BThU/hr
power requirement
Functional:
ISO 8802/3
IEEE 802.3
Safety:
UL 1950, EN 60950
CSA 22.2 #950
IEC 950
EMC:
EN 55022 Class B†
EN 50082-1
FCC Part 15 Class B†*
ICES-003 Class B†
VCCI Class B†
228mm (9.12in.)
54mm
(2.1in.)
0 to 40°C (32 to 105°F)
operating
temperature
0 to 90%
(non-condensing)
humidity
Standards
185mm (7.3in.)
1kg (2.2 lb)
CNS 13438 Class A
Environmental:
EN 60068 (IEC 68)
†Category
5 screened cables must be used to ensure
compliance with the Class B requirements of this standard.
The use of unscreened cables (category 3 or category 5)
complies with the Class A requirements.
*Refer to “Electromagnetic Compatibility” on page 30 for
conditions of operation.†
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ENVIRONMENTAL STATEMENTS
It is the policy of 3Com Corporation to be
environmentally-friendly in all operations. To uphold our
policy, we are committed to:
End Of Life Statement
3Com processes allow for the recovery, reclamation and safe
disposal of all end-of-life electronic components.
■
Establishing environmental performance standards that
comply with national legislation and regulations.
Regulated Materials Statement
■
Conserving energy, materials and natural resources in all
operations.
3Com products do not contain any hazardous or
ozone-depleting material.
■
Reducing the waste generated by all operations.
■
Ensuring that all waste conforms to recognized
environmental standards.
Environmental Statement about the Documentation
The documentation for this product is printed on paper that
comes from sustainable, managed forests; it is fully
biodegradable and recyclable, and is completely
chlorine-free. The varnish is environmentally-friendly, and the
inks are vegetable-based with a low heavy-metal content.
■
Maximizing the recyclable and reusable content of all
products.
■
Ensuring that all products can be recycled, reused and
disposed of safely.
■
Ensuring that all products are labelled according to
recognized environmental standards.
Environmental Statement about the Product
Packaging
■
Improving our environmental record on a continual basis.
The packaging for this product is fully recyclable. It has a
recycled (post consumer) waste content of at least 40% by
weight, and no heavy-metal content.
18
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IMPORTANT SAFETY INFORMATION
WARNING: Warnings contain directions that you
must follow for your personal safety. Follow all
directions carefully.
You must read the following safety information
carefully before you install or remove the unit:
■
Exceptional care must be taken during installation and
removal of the unit.
■
Only stack the OfficeConnect hub with other
OfficeConnect units.
■
To ensure compliance with international safety standards,
only use the power adapter that is supplied with the
unit.
■
The socket outlet must be near to the unit and easily
accessible. You can only remove power from the unit by
disconnecting the power cord from the outlet.
■
This unit operates under SELV (Safety Extra Low Voltage)
conditions according to IEC 950. The conditions are only
maintained if the equipment to which it is connected
also operates under SELV conditions.
■
There are no user-replaceable fuses or user-serviceable
parts inside the hub. If you have a physical problem with
the unit that cannot be solved with problem solving
actions in this guide, contact your supplier.
■
Disconnect the power adapter before moving the unit.
WARNING: RJ-45 ports. These are shielded RJ-45
data sockets. They cannot be used as telephone
sockets. Only connect RJ-45 data connectors to these
sockets.
19
3C16751_booklet.book Page 20 Tuesday, July 13, 1999 11:29 AM
WICHTIGE SICHERHEITSHINWEISE
WARNHINWEIS: Warnhinweise enthalten
Anweisungen, die Sie zu Ihrer eigenen Sicherheit
befolgen müssen. Alle Anweisungen sind sorgfältig zu
befolgen.
Sie müssen die folgenden Sicherheitsinformationen
sorgfältig durchlesen, bevor Sie das Geräts installieren
oder ausbauen:
■
Bei der Installation und beim Ausbau des Geräts ist mit
höchster Vorsicht vorzugehen.
■
Stapeln Sie das Geräts nur mit anderen OfficeConnect
Gerätes zusammen.
■
Aufgrund von internationalen Sicherheitsnormen darf das
Gerät nur mit dem mitgelieferten Netzadapter verwendet
werden.
■
Die Netzsteckdose muß in der Nähe des Geräts und
leicht zugänglich sein. Die Stromversorgung des Geräts
kann nur durch Herausziehen des Gerätenetzkabels aus
der Netzsteckdose unterbrochen werden.
■
Der Betrieb dieses Geräts erfolgt unter den
SELV-Bedingungen (Sicherheitskleinstspannung) gemäß
IEC 950. Diese Bedingungen sind nur gegeben, wenn
auch die an das Gerät angeschlossenen Geräte unter
SELV-Bedingungen betrieben werden.
■
Es sind keine von dem Benutzer zu ersetzende oder zu
wartende Teile in dem Gerät vorhanden. Wenn Sie ein
Problem mit dem Switch haben, das nicht mittels der
Fehleranalyse in dieser Anleitung behoben werden kann,
setzen Sie sich mit Ihrem Lieferanten in Verbindung.
■
Vor dem Ausbau des Geräts das Netzadapterkabel
herausziehen.
WARNHINWEIS: RJ-45-Anschlüsse. Dies sind
abgeschirmte RJ-45-Datenbuchsen. Sie können nicht
als Telefonanschlußbuchsen verwendet werden. An
diesen Buchsen dürfen nur RJ-45-Datenstecker
angeschlossen werden.
20
3C16751_booklet.book Page 21 Tuesday, July 13, 1999 11:29 AM
CONSIGNES IMPORTANTES DE SÉCURITÉ
AVERTISSEMENT: Les avertissements présentent des
consignes que vous devez respecter pour garantir
votre sécurité personnelle. Vous devez respecter
attentivement toutes les consignes.
Nous vous demandons de lire attentivement les
consignes suivantes de sécurité avant d’installer ou de
retirer l’appareil:
■
Faites très attention lors de l'installation et de la dépose
du groupe.
■
Seulement entasser le moyer avec les autres moyeux
OfficeConnects.
■
Pour garantir le respect des normes internationales de
sécurité, utilisez uniquement l'adaptateur électrique remis
avec cet appareil.
■
La prise secteur doit se trouver à proximité de l’appareil
et son accès doit être facile. Vous ne pouvez mettre
l’appareil hors circuit qu'en débranchant son cordon
électrique au niveau de cette prise.
■
L’appareil fonctionne à une tension extrêmement basse
de sécurité qui est conforme à la norme CEI 950. Ces
conditions ne sont maintenues que si l'équipement
auquel il est raccordé fonctionne dans les mêmes
conditions.
■
Il n’y a pas de parties remplaceables par les utilisateurs
ou entretenues par les utilisateurs à l’intérieur du moyeu.
Si vous avez un problème physique avec le moyeu qui ne
peut pas être résolu avec les actions de la résolution des
problèmes dans ce guide, contacter votre fournisseur.
■
Débranchez l'adaptateur électrique avant de retirer cet
appareil.
AVERTISSEMENT: Ports RJ-45. Il s'agit de prises
femelles blindées de données RJ-45. Vous ne pouvez
pas les utiliser comme prise de téléphone. Branchez
uniquement des connecteurs de données RJ-45 sur
ces prises femelles.
21
3C16751_booklet.book Page 22 Tuesday, July 13, 1999 11:29 AM
TECHNICAL SUPPORT
3Com provides easy access to technical support information
through a variety of services. This section describes these
services.
This service provides access to online support information
such as technical documentation and software, as well as
support options that range from technical education to
maintenance and professional services.
Information contained in this section is correct at time of
publication. For the most recent information, 3Com
recommends that you access the 3Com Corporation World
Wide Web site.
3Com Knowledgebase Web Services
This interactive tool contains technical product information
compiled by 3Com expert technical engineers around the
globe. Located on the World Wide Web at:
Online Technical Services
http://knowledgebase.3com.com.
3Com offers worldwide product support 24 hours a day,
7 days a week, through the following online systems:
■
World Wide Web site.
■
3Com Knowledgebase Web Services.
This service gives all 3Com customers and partners
complementary, round-the-clock access to technical
information on most 3Com products.
World Wide Web Site
To access the latest networking information on the
3Com Corporation World Wide Web site, enter this URL
into your Internet browser:
http://www.3com.com/
22
3C16751_booklet.book Page 23 Tuesday, July 13, 1999 11:29 AM
Support from Your Network Supplier
Support from 3Com
If you require additional assistance, contact your network
supplier. Many suppliers are authorized 3Com service
partners who are qualified to provide a variety of services,
including network planning, installation, hardware
maintenance, application training, and support services.
If you are unable to obtain assistance from the 3Com online
technical resources or from your network supplier, 3Com
offers technical telephone support services. To find out more
about your support options, call the 3Com technical
telephone support phone number at the location nearest
you.
When you contact your network supplier for assistance,
have the following information ready:
■
Product model name, part number, and serial number.
■
A list of system hardware and software, including revision
levels.
■
Diagnostic error messages.
■
Details about recent configuration changes, if applicable.
When you contact 3Com for assistance, have the following
information ready:
If you are unable to contact your network supplier, see the
following section on how to contact 3Com.
23
■
Product model name, part number, and serial number.
■
A list of system hardware and software, including revision
levels.
■
Diagnostic error messages.
■
Details about recent configuration changes, if applicable.
3C16751_booklet.book Page 24 Tuesday, July 13, 1999 11:29 AM
Here is a list of worldwide technical telephone support
numbers:
Country
Telephone Number
Country
Telephone Number
Asia, Pacific Rim
Australia
Hong Kong
India
Indonesia
Japan
Malaysia
New Zealand
Pakistan
Philippines
1 800 678 515
800 933 486
+61 2 9937 5085
001 800 61 009
0031 61 6439
1800 801 777
0800 446 398
+61 2 9937 5085
1235 61 266 2602
P.R. of China
10800 61 00137 or
021 6350 1590
800 6161 463
Singapore
S. Korea
From anywhere in S. Korea:
From Seoul:
Taiwan, R.O.C.
Thailand
00798 611 2230
(0)2 3455 6455
0080 611 261
001 800 611 2000
Europe
From anywhere in Europe, call: +31 (0)30 6029900 phone
+31 (0)30 6029999 fax
Europe, South Africa, and Middle East
From the following countries, you may use the toll-free numbers:
Austria
Belgium
Denmark
Finland
France
Germany
Hungary
Ireland
Israel
Italy
0800 297468
0800 71429
800 17309
0800 113153
0800 917959
0800 1821502
00800 12813
1800 553117
1800 9453794
1678 79489
Netherlands
Norway
Poland
Portugal
South Africa
Spain
Sweden
Switzerland
U.K.
24
0800 0227788
800 11376
00800 3111206
0800 831416
0800 995014
900 983125
020 795482
0800 55 3072
0800 966197
3C16751_booklet.book Page 25 Tuesday, July 13, 1999 11:29 AM
Country
Telephone Number
Country
Telephone Number
Latin America
Argentina
Brazil
Chile
Colombia
AT&T +800 666 5065
0800 13 3266
1230 020 0645
98012 2127
Mexico
Peru
Puerto Rico
Venezuela
01 800 CARE (01 800
2273)
AT&T +800 666 5065
800 666 5065
AT&T +800 666 5065
North America
1 800 876-3266
25
3C16751_booklet.book Page 26 Tuesday, July 13, 1999 11:29 AM
Returning Products for Repair
Before you send a product directly to 3Com for repair, you
must first obtain a Return Material Authorization (RMA)
number. Products sent to 3Com without authorization
numbers will be returned to the sender unopened, at the
sender’s expense.
To obtain an authorization number, call or fax:
Country
Telephone Number
Fax Number
Asia, Pacific Rim
+ 65 543 6500
+ 65 543 6348
Europe, South Africa,
and Middle East
+ 31 30 6029900
+ 31 30
6029999
Latin America
1 408 326 2927
1 408 326 3355
From the following countries, you may call the toll-free numbers;
select option 2 and then option 2:
26
Country
Telephone Number
Austria
Belgium
Denmark
Finland
France
Germany
Hungary
Ireland
Israel
Italy
Netherlands
Norway
Poland
Portugal
South Africa
Spain
Sweden
Switzerland
U.K.
0800 297468
0800 71429
800 17309
0800 113153
0800 917959
0800 1821502
00800 12813
1800553117
1800 9453794
1678 79489
0800 0227788
800 11376
00800 3111206
0800 831416
0800 995014
900 983125
020 795482
0800 55 3072
0800 966197
U.S.A. and Canada
1 800 876 3266
Fax Number
1 408 326 7120
(not toll-free)
3C16751_booklet.book Page 27 Tuesday, July 13, 1999 11:29 AM
3Com Corporation LIMITED WARRANTY
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 manual.
3Com OfficeConnect Dual Speed Hub 16
The duration of the warranty for the OfficeConnect Dual Speed Hub 16
(3C16751A) is lifetime, including the power adapter.
Advance hardware exchange is available during the first year from your date of
purchase in accordance with 3Com’s standard terms and conditions for such
service. After the first year the warranty reverts to 3Com’s standard lifetime
limited warranty.
To qualify for the lifetime limited warranty and the advance hardware exchange
you must submit the appropriate product warranty registration card to 3Com,
otherwise this product will be warranted for a period of one (1) year without
advance hardware exchange.
YEAR 2000 WARRANTY
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.
HARDWARE
3Com warrants this hardware product to 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:
One (1) year (unless otherwise specified above)
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.
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.
SOFTWARE
3Com warrants 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
OBTAINING WARRANTY SERVICE
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
pre-authorized by 3Com with a Return Material Authorization (RMA) number
27
3C16751_booklet.book Page 28 Tuesday, July 13, 1999 11:29 AM
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. 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.
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 NON-INFRINGEMENT, 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.
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. 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.
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, OTHER HAZARDS, OR ACTS OF GOD.
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.
ADDITIONAL SERVICES:
Telephone Support. This OfficeConnect® product comes with telephone technical
support for ninety (90) days. The ninety (90) day period begins on the date of
Customer's product purchase.
The telephone technical support is available from 3Com from 9 a.m. to 5 p.m.,
local time, Monday through Friday, excluding local holidays. Telephone technical
support is limited to the 3Com products designated above and may include
assistance with installation, product specific configuration, and identification of
equipment problems. Please refer to the Technical Support appendix in the User
Guide for telephone numbers.
LIMITATION OF LIABILITY
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.
Response to requests for telephone technical support will be in the form of a
return call from a 3Com representative by close of business the following business
day.
To qualify for this 90 days of telephone technical support, you must register on
the 3Com Web site at http://support.3Com.com/index.htm, and provide your date
of purchase, product number, and serial number. 3Com reserves the right to
modify or cancel this telephone support offering at any time, without advance
notice. This offer is not available where prohibited or restricted by law.
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.
28
3C16751_booklet.book Page 29 Tuesday, July 13, 1999 11:29 AM
DISCLAIMER
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
Santa Clara, CA 95054
(408) 326-5000
29
3C16751_booklet.book Page 30 Tuesday, July 13, 1999 11:29 AM
ELECTROMAGNETIC COMPATIBILITY
VCCI STATEMENT
FCC STATEMENT
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules, and the Canadian
Department of Communications Equipment Standards entitled, “Digital
Apparatus,” ICES-003. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur
in a particular installation.
BCIQ STATEMENT
If this equipment does cause interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:
■
Reorient the receiving antenna.
■
Relocate the equipment with respect to the receiver.
■
Move the equipment away from the receiver.
■
Plug the equipment into a different outlet so that equipment and receiver are
on different branch circuits.
INFORMATION TO THE USER
■
Consult the dealer or an experienced radio/television technician for help.
The user may find the following booklet prepared by the Federal Communications
Commission helpful:
How to Identify and Resolve Radio-TV Interference Problems
CSA STATEMENT
This booklet is available from the U.S. Government Printing Office, Washington,
DC 20402, Stock No. 004-000-00345-4.
This Class B digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
In order to meet FCC emissions limits, this equipment must be used only with
cables which comply with IEEE 802.3.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement
sur le matériel brouilleur du Canada.
30
3C16751_booklet.book Page 31 Tuesday, July 13, 1999 11:29 AM
Wall mounting screw hole guide
142mm (5.6in.)
31
3C16751_booklet.book Page 32 Tuesday, July 13, 1999 11:29 AM
Part No. DUA 1675-1AAA02
Published June 1999
32
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