PDF User Manual

  1. Home
  2. Manuals
  3. 3Com OfficeConnect 3C16790C User Manual

3Com OfficeConnect 3C16790C User Manual

Made by: 3Com
Type: User Guide
Category: Switch
Pages: 18
Size: 2.4 MB

 

Download PDF User Manual


Related Product Video

 

Full Text Searchable PDF User Manual



background image

3Com Corporation, Corporate Headquarters, 350 Campus Drive,
Marlborough, MA 01752-3064

www.3Com.com

10016680 Rev CA   June 2008

OfficeConnect

®

Fast Ethernet Switch 5 

(3C16790C)

Fast Ethernet Switch 8

(3C16791C)

User Guide

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 1

 


background image

About This Guide

This guide will use the term Switch when referring to the
OfficeConnect Fast Ethernet Switch.

DIMENSIONS AND STANDARDS

Dimensions and Operating Conditions

Standards
Functional:

ISO 8802/3, IEEE 802.3, IEEE 802.3u

Safety:

UL 60950-1, EN 60950-1, CSA 22.2
#60950-1, IEC60950-1

EMC:

EN 55022 Class B, EN 55024, FCC Part 15
Class B*, ICES-003 Class B

Environmental:

EN 60068 (IEC 68)

Category 5 screened cables must be used to ensure compliance with the Class
B requirements of the above standards. The use of unscreened cables complies
with the Class A requirements.
* Refer to Regulatory notices in this user guide.

3

INTRODUCTION

About This Guide:

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.

As the power of workstations and business applications increas-
es, heavier demands are made on the available network band-
width that if unchecked, can lead to performance problems in
a hub-based setup. Installing the 3Com

®

OfficeConnect Fast

Ethernet Switch 5 (3C16790C) or Switch 8 (3C16791C) allows
your network to be segmented so that traffic can be contained
effectively, reducing the overall load without affecting access to
critical resources. This switch has one of the most compact
designs in the industry making it ideal for desktop use. It can
be used with other units in the OfficeConnect family, which
include Cable/DSL gateways, wireless devices, Fast Ethernet and
Gigabit Ethernet switches. The OfficeConnect family is a fully
integrated system, enabling you to share computer resources,
and take advantage of new technologies as your network grows.

Your Package Contains:

• OfficeConnect Switch
• Power adapter for use with the Switch
• Four rubber feet
• This User Guide
• Warranty flyer

2

Fast Ethernet
Switch 5
2.8W, 9.56BTU/hr

Fast Ethernet
Switch 8
3.2W, 10.92BTU/hr

Depth:
Switch 5:
85 mm (3.35 in)
Switch 8:
85 mm (3.35 in)

0 to 40ºC
(32 to 104ºF)
operating
temperature 

0 to 95%
(non-condensing)
humidity

Width:

Switch 5:

112 mm (4.4 in)

Switch 8:

146 mm (5.75 in)

On

 = 1

0/10

0M

, Fl

ash

 = A

ctivi

ty 

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 2

 


background image

ABOUT YOUR SWITCH

OfficeConnect Fast Ethernet Switch - Front

1 Power LED (Illuminated Logo) 

Green
Indicates that the Switch is receiving power. If the LED is
off there may be a problem with the power adapter, power
adapter cable or the Switch's internal power supply. Refer
to Problem Solving.

2 Five/Eight Port Status LEDs

Green (100 Mbps link) (10 Mbps link)

If the LED is on, the link between the port and the next
piece of equipment is OK. If the LED is flashing, the link
is OK and data is being transmitted or received. If the
LED is off, nothing is connected or the connected device
is turned off, or there is a problem with the connection
(refer to the Problem Solving section).

5

GREENCONNECT CONFIGURATION
CONFIGURATION

4

OfficeConnect

Fast Ethernet Switch 8

OfficeConnect
Gigabit Switch

On

 = 

10

/10

0M,

 Fla

sh 

= A

ctiv

ity

 

Gree

n = 

100

0M

, Ye

llow =

 10

/10

0M,

 Fla

sh 

= Act

ivit

Figure 1
Network showing sample configuration with Fast Ethernet
Switch.

2

1

On = 10/100M, Flash = Activity 

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 4

 


background image

WARNING: RJ-45 ports.

These are shielded RJ-45 data sockets. They cannot be used
as standard traditional telephone sockets, or to connect the
unit to a traditional PBX or public telephone network. Only
connect RJ-45 data connectors, network telephony systems,
or network telephones to these sockets.

Either shielded or unshielded data cables with shielded or
unshielded jacks can be connected to these data sockets.

VORSICHT: RJ-45-Portes.

Diese Portes sind geschützte Datensteckdosen. Sie dürfen
weder wie normale traditionelle Telefonsteckdosen noch für
die Verbindung der Einheit mit einem traditionellenm 
privatenm oder öffentlichenm Telefonnetzwerk gebraucht
werden. Nur RJ-45- Datenansclußhlüsse,
Telefonnetzsysteme oder Netztelefone an diese Steckdosen
anschließen.

Entweder geschützte oder ungeschützte Buchsen dürfen an
diese Datensteckdosen angeschlossen werden. 

AVERTISSEMENT : Prises RJ-45 blindées.

Ces prises ne peuvent servir comme prises téléphone 
standard et ne permettent pas la connexion de l'appareil à
un système PBX ni à un réseau téléphonique public. N'y
branchez que des prises RJ-45 mâles adaptées, ou des 
systèmes de réseaux téléphoniques. Il est possible d'y
brancher des câbles blindés ou non comportant des prises
de type Jack (blindées ou non).

7

OfficeConnect Fast Ethernet Switch - Rear

3 Power Adapter Socket

Only use the power adapter that is supplied with the
Switch.

4 10BASE-T/100BASE-TX Ports

Use suitable TP cable with RJ-45 connectors. You can
connect your Switch to a workstation, or any other piece
of equipment that has 10BASE-T/100BASE-TX connectivity.

Each port is capable of autosensing for 10 Mbps, 
100 Mbps operation.

All ports have an automatic MDI/MDIX feature, which
means either straight-through or crossover cable can be
used to connect to any port.

6

3

4

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 6

 


background image

Wall Mounting

There are two slots on the underside of the Switch that can
be used for wall mounting. The Switch must be mounted
with the LEDs facing upwards.

When wall mounting the unit, ensure it is within reach
of the power outlet

When wall mounting the unit, ensure that the rubber
feet are not fixed

Mounting Instructions for Cement Walls

Make two holes 67mm apart for 5 port, and 100mm apart

for 8 port and insert two nylon or similar screw anchors
that are suitable for the wall construction.

Fix two suitable screws into the anchors, leaving their

heads 3 mm (0.12 in.) clear of the wall surface. The screws
should be at least 30 mm (1.2 in.) long. 

Remove any connections in the Switch and locate it over

the screw heads. When in line, gently push the Switch on
to the wall and move it downwards to secure.

Mounting Instructions for Wood Walls

Make two holes 67mm apart for 5 port, and 100mm apart

for 8 port. 

Fix two suitable screws directly into the wall, leaving their

heads 3 mm (0.12 in.) clear of the wall surface. The screws
should be at least 20 mm (0.75 in.) long. 

Remove any connections in the Switch and locate it over

the screw heads. When in line, gently push the Switch on
to the wall and move it downwards to secure.

CAUTION: When making connections, be careful not
to push the Switch up and off the wall.

9

1 POSITIONING YOUR SWITCH

Safety Information

WARNING: Please read the ‘Important Safety
Information’ section in the Support and Safety
Information sheet before you start. 

VORSICHT: Bitte lesen Sie den Abschnitt ‘Wichtige
Sicherheitsinformationen’ sorgfältig durch, bevor Sie das
Gerät einschalten.

AVERTISSEMENT: Veuillez lire attentivement la 
section "Consignes importantes de sécurité" avant de
mettre en route.

When positioning your Switch, ensure:

• It is out of direct sunlight and away from sources of heat.
• Cabling is away from power lines, fluorescent lighting fix-

tures, and sources of electrical noise such as radios, trans-
mitters 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. 3Com recommends you pro-
vide a minimum of 25 mm (1 in.) clearance.

Using the Rubber Feet

Use the four self-adhesive rubber feet to prevent your Switch
from moving around on your desk, or when stacking with flat
top OfficeConnect units. Only stick the feet to the marked
areas at each corner on the underside of your Switch.

8

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 8

 


background image

2 BEFORE YOU INSTALL YOUR SWITCH

Unit Connections

To connect other OfficeConnect units (such as gateways or
switches) to your Switch you need:

• One suitable Twisted Pair (TP) cable for each unit
3Com recommends Category 5E cable for Gigabit connections.

Workstation Connections

To connect workstations or other equipment (such as servers)
directly to your Switch, you need:

One adapter card for each workstation to be connected to

a port on the Switch. The adapter card must be capable of
communicating at the required speed.

An operating system (for example Netware or Windows

95/98/Me/2000/XP) with network support configured, run-
ning on your workstations (for example Windows/Mac/
Linux).

One suitable Twisted Pair cable for each workstation.

11

10

W

all mounting template

Fast Ether

net Switch 5 

67mm apart

Fast Ether

net Switch 8

100mm apart

On

 = 

10

/10

0M

, Fl

ash

 = A

cti

vit

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 10

 


background image

Expanding Your Network

You can increase the number of workstations and other
devices that can connect to your network by adding
OfficeConnect gateways and switches. You can connect a
10BASE-T or 100BASE-TX OfficeConnect unit to each port of
the Switch.

The Switch has automatic MDI/MDIX functionality, and there-
fore does not require the Uplink/Normal switch associated
with some OfficeConnect products. Simply plug in the cable,
and the Switch will automatically detect which wiring practice
has been followed, and will compensate accordingly.

Checking Unit Connections

When you have connected all your units, power on the units
and the Switch. The Port Status LEDs for the ports you have
used should be lit. If they are not, check your connections.

4 HOW YOUR SWITCH CAN BE USED

Switching

When a network of repeater hubs is in operation, any infor-
mation that is sent by the workstation is passed around the
whole network (regardless of the destination of the informa-
tion). This can result in a lot of unnecessary traffic that can
slow the network down. The Switch solves this problem
because it "listens" to the network and automatically learns
what workstations can be reached through its ports. It can
then selectively pass on any information by transmitting the
traffic from the relevant port only. This operation is called
"switching".

13

3 CONNECTING WORKSTATIONS

Twisted Pair (TP) Cables

Cables can be shielded (screened) or unshielded. Cables must
be Category 5 or above. The maximum length you can use is
100 m (328 ft).

Twisted Pair (TP) cable is very easy to use. To connect a TP
cable, simply slot the connector into the relevant RJ-45 Port.
When a connector is fully in, its latch locks into place. To 
disconnect the cable, push the connector’s latch in and
remove it.

When one end of a TP cable is connected to the Switch and
the other end is connected to the network interface card of a
workstation or other device, the Switch will automatically
detect whether a straight-through or crossover cable is being
used and will compensate if required. The units will then
autonegotiate to determine the fastest possible link speed
between them. This may take a few seconds and the out-
come will be reflected in the LEDs on the front of the Switch.

If the equipment connected to the Switch does not sup-
port autonegotiation or it has been disabled, it must be
configured to operate in half duplex mode.

12

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 12

 


background image

5 PROBLEM SOLVING

The Switch 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 dam-
aged cable, or incorrect configuration. If this section does not
solve your problem, contact your supplier for information on
what to do next.

Perform these actions first:

• Ensure all network equipment is powered on.
• Power each piece of network equipment off, wait about

five seconds and then power each one on.

CAUTION: Do not power the Switch off and then
immediately on. Wait about five seconds between
power cycles. 

Check the following symptoms and solutions:

Power Status LED (Illuminated 3Com Logo) not lit.

The power adapter or power adapter connection is likely to
be faulty. Check your power adapter connection. If there is
still no power, contact 3Com Technical Support and ask for a
replacement power adapter. Please quote the power adapter
part number, shown on the OfficeConnect power adapter
you are currently using or refer to the table opposite.

15

The Switch effectively divides up your network, localizing the
network traffic and passing on traffic as necessary. If you have
any high performance workstations that require a lot of band-
width, connect them directly to the Switch.

Traffic Prioritization (8 port Switch only)

The Switch has a built in feature to aid network performance
at times of excessive load. It is called Priority Queuing. When
a packet is received, the 8 port Switch will examine it to see if
it has been priority encoded. If it has, the Switch will then
read the priority level and determine whether it should be
directed through the normal or high priority channel. This fea-
ture can be useful during excessive loads, for example, when
one type of traffic may require priority over another. 

Connecting 10BASE-T/100BASE-TX Networks

The ports can each be connected to a 10BASE-T/100BASE-TX
network. If you have various connection speeds in your net-
work, you can join them together using the Switch allowing
all your workstations to communicate. For example, by con-
necting one of the ports to a server, all the workstations con-
nected to the server can communicate with devices connected
to the Switch, significantly increasing the size of your network.

14

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 14

 


background image

17

3C number

Region

3C12VUS or 3C5VHEUS

US

United States

3C12VUK or 3C5VHEUK

UK

United Kingdom

3C12VME or 3C5VHEME

ME

Mainland Europe

3C12VAA or 3C5VHEAA

AA

Australasia

3C12VSA SA

South 

Africa

3C12VKR

KR

South Korea

3C12VRA RA

Argentina

Only use the power adapter supplied with the Switch
or a replacement OfficeConnect power adapter. Do
not use any other power adapter.

Port Status LED not lit for a port that has a TP cable
connected. 
After connection, it may take several seconds for
the Port Status LEDs to illuminate. The Port Status LED should
turn, Green for each port that is connected. Please refer to
‘About Your Switch’ for a full description of the LEDs.

If the Port Status LED is not lit after several seconds, ensure
that the connected device is powered on, that the TP cable is
not damaged and that it is correctly inserted at both ends.

You may find that a TP cable works when connected to the
Switch, but that it does not if disconnected from the Switch
and connected to another device. This may be because the
other device does not have the automatic MDI/MDIX feature.

The Port Status LED is lit but the network performance of
the switch is poor.  
The switch supports full-duplex autonego-
tiation. If the connected device does not support autonegotia-
tion, ensure it is configured for half duplex operation only. 

16

Support 
and Safety
Information

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 16

 


background image

Consignes de sécurité importantes

Avertissement: Ces avertissements sont à respecter pour votre sécurité.

Lisez-les attentivement.
Vous devez impérativement lire les consignes de sécurité suivantes avant
de procéder à l’installation ou à la désinstallation du matériel, ou à toute
activité d’entretien.

Avertissement: L’installation et la désinstallation du matériel nécessite

une vigilance exceptionnelle.

Avertissement: Pour être conforme aux normes de sécurité 

internationales, ce produit doit être utilisé exclusivement avec une 
alimentation aux normes du pays d’utilisation.
La sortie de l’alimentation doit être de +5/12V continus, 1A minimum, et
les polarités du connecteur de sortie doivent coïncider avec les indications
figurant sur l’appareil.

Avertissement: Coupez systématiquement l’adaptateur secteur

avant de déplacer l’appareil.

Avertissement: Cet appareil fonctionne à très basse tension de

sécurité (SELV, Safety Extra Low Voltage) conformément à la norme IEC
60950-1. Pour ce faire, le matériel auquel il est connecté doit également
fonctionner sous SELV.

Avertissement: Ports RJ 45. Il s’agit de connecteurs de 

communication de données blindés RJ 45. Il n’est pas possible de les
utiliser comme prises téléphoniques classiques ni de connecter l’appareil à
un standard téléphonique classique ou à un réseau téléphonique public.
Seuls des connecteurs de réseau de données RJ 45, des systèmes de 
téléphonie en réseau ou des téléphones réseau peuvent y être branchés.
Vous pouvez y brancher des câbles pour réseau de données blindés ou
non pourvus de prises jack blindées ou non aux extrémités.

19

Important Safety Information

WARNING: Warnings contain directions you must follow for your

personal safety. Follow all directions carefully.
You must read the following safety information before carrying out any
installation or removal of the unit, or any maintenance procedures.

WARNING: Exceptional care must be taken during installation and

removal of the unit.

WARNING: To ensure compliance with international safety standards

this product must only be used with a power supply that is approved in
the country of use. 
The power supply output must be +5/12V DC, 1A minimum and the
polarity of the power supply output connector must comply with the
marking on the unit.

WARNING: Disconnect the power adapter before moving the unit.

WARNING: This unit operates under SELV (Safety Extra Low Voltage)

conditions according to IEC 60950-1. The conditions are only maintained
if the equipment to which it is connected also operates under SELV 
conditions. 

WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They

cannot be used as standard traditional telephone sockets, or to connect
the unit to a traditional PBX or public telephone network. Only connect
RJ-45 data connectors, network telephony systems, or network telephones
to these sockets.
Either shielded or unshielded data cables with shielded or unshielded
jacks can be connected to these data sockets.

18

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 18

 


background image

Importanti informazioni di sicurezza 

Avvertenza: Queste avvertenze precisano le direttive da seguire per

la propria sicurezza personale. Conformarsi con la massima attenzione a
quanto precisato. 
Leggere con attenzione le informazioni relative alla sicurezza prima di
procedere all’installazione o alla rimozione dell’unità o a qualsiasi 
intervento di manutenzione.

Avvertenza: E’ necessario prestare la massima attenzione durante

l’installazione e la rimozione dell’unità.

Avvertenza: Per garantire la piena conformità con gli standard di

sicurezza internazionali, il prodotto deve essere utilizzato con 
un’alimentazione approvata nello specifico paese di utilizzo.
L’uscita dell’alimentazione deve essere +5/12V DC, 1A minimo e la polar-
ità del connettore dell’uscita dell’alimentazione dovrà conformarsi con la
marcatura riportata sull’unità.

Avvertenza: Scollegare l’adattatore di alimentazione prima di

spostare l’unità.

Avvertenza: Quest’unità funziona in condizioni SELV (Safety Extra

Low Voltage)  conformemente a IEC 60950-1. Tali condizioni potranno
essere mantenute solo se l’apparecchiatura a cui è collega funziona 
similmente in condizioni SELV.

Avvertenza: Porte RJ-45. Si tratta di prese dati schermate RJ-45.

Non potranno essere utilizzate come prese telefoniche tradizionali o per
collegare l’unità ad una normale rete PBS o telefonica pubblica. Collegare
a queste prese solo connettori RJ-45, sistemi di telefonia in rete o telefoni
in rete.
A queste prese dati potranno essere collegati cavi dati schermati o meno
con jack schermati o meno.

21

Wichtige Sicherheitsinformationen

Warnung: Warnhinweise enthalten Anweisungen, die Ihrer 

persönlichen Sicherheit dienen. Befolgen Sie all diese Anweisungen mit
größter Sorgfalt.

Lesen Sie unbedingt die folgenden Sicherheitsinformationen, bevor Sie
eine Installation oder Entfernung des Gerätes vornehmen bzw.
Wartungen/Instandhaltungen durchführen.

Warnung: Bei der Installation und Entfernung des Gerätes ist mit

äußerster Sorgfalt vorzugehen.

Warnung: Um die Übereinstimmung mit den internationalen

Sicherheitsstandards zu gewährleisten, darf dieses Produkt nur mit einer
Stromversorgung betrieben werden, die den Bestimmungen des 
jeweiligen Landes entspricht.
Die Netzsteckdose muss +5/12V DC, 1A minimal haben und die Polarität
des Netzanschlusses muss der Kennzeichnung auf dem Gerät
entsprechen.

Warnung: Nehmen Sie vor dem Transport des Gerätes den

Netzadapter ab.

Warnung: Dieses Gerät arbeitet gemäß IEC 60950-1 mit

Schutzkleinspannung (SELV = Safety Extra Low Voltage). Dieser Schutz
bleibt nur erhalten, wenn die angeschlossene Anlage ebenfalls über SELV
verfügt.

Warnung: RJ-45 Anschluss. Dies sind abgeschirmte RJ-45-

Datenbuchsen. Sie können nicht als herkömmliche
Standardtelefonbuchsen verwendet werden und verbinden das Gerät
nicht mit einer herkömmlichen Telefonanlage oder einem öffentlichen
Telefonnetz. Schließen Sie an diese Buchsen nur RJ-45-Datenanschlüsse,
Netzwerktelefonieanlagen oder Netzwerktelefone an.
An diese Datenbuchsen können abgeschirmte oder nicht abgeschirmte
Stecker angeschlossen werden.

20

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 20

 


background image

IIs

stto

ottn

ne

e  B

Be

ezzp

piie

ec

czze

ńs

sttw

wo

o  IIn

nffo

orrm

ma

ac

cjja

a

W

Wa

arrn

niin

ng

g:: Ostrzeżenia zawierają wskazówki, których należy

przestrzegać w celu zagwarantowania bezpieczeństwa osobistego. Do
tych zaleceń należy stosować się dokładnie. 

Przed przystąpieniem do instalacji, usuwania urządzenia lub jakichkolwiek
czynności konserwacyjnych należy zapoznać się z instrukcjami 
bezpieczeństwa.

W

Wa

arrn

niin

ng

g:: Podczas montażu lub demontażu urządzenia należy 

pracować z wyjątkową uwagą.

W

Wa

arrn

niin

ng

g:: Aby zapewnić zgodność z międzynarodowymi standardami

bezpieczeństwa, produkt należy wyłącznie używać w połączeniu z 
zasilaczem zatwierdzonym w danym kraju.

Gniazdo zasilania musi mieć parametry +5/12V DC, 1A minimum, a
biegunowość złącza wyjściowego musi być zgodna z oznaczeniami na
urządzeniu.

W

Wa

arrn

niin

ng

g:: Przed przeniesieniem urządzenia należy odłączyć zasilacz.

W

Wa

arrn

niin

ng

g:: Urządzenie działa w warunkach SELV (obwód 

bezpiecznego niskiego napięcia) zgodnie z normą IEC 60950-1. Warunki
te są jednak zagwarantowane wyłącznie wtedy, gdy sprzęt, do którego
podłączone jest urządzenie, również pracuje w obwodzie SELV.

W

Wa

arrn

niin

ng

g:: Porty RJ-45. Są to ekranowane gniazda RJ-45 do

danych. Nie są przeznaczone do użycia jako standardowe gniazda 
telefoniczne lub do podłączenia urządzenia do PBX lub publicznej sieci
telefonicznej. Do tych gniazd wolno podłączać wyłącznie wtyki RJ-45
danych, systemów telefonii sieciowej lub telefonów sieciowych.

Do tych gniazd można podłączać kable danych ekranowane lub 
nieekranowane z ekranowanymi lub nieekranowanymi wtykami.

23

Información de seguridad importante

Advertencia: Las advertencias contienen instrucciones que debe

seguir para su seguridad personal. Siga todas las instrucciones atentamente. 
Debe leer la siguiente información de seguridad antes de llevar a cabo la
instalación o extracción de la unidad, o cualquier procedimiento de 
mantenimiento.

Advertencia: Se debe extremar el cuidado durante la instalación y

extracción de la unidad.

Advertencia: Para asegurar la conformidad con los estándares de

seguridad internacionales, este producto sólo se puede usar con una
fuente de alimentación aprobada en el país de uso.
La salida de la fuente de alimentación debe ser de +5/12V CC, de 1A 
mínimo y la polaridad del conector de salida de alimentación debe
cumplir con la marca en la unidad.

Advertencia: Desconecte el adaptador de alimentación antes de

desplazar la unidad.

Advertencia: Esta unidad opera bajo condiciones SELV (muy bajo

voltaje de seguridad) de acuerdo con la norma IEC 60950-1. Las 
condiciones sólo se mantienen si el equipo al que está conectado 
también opera bajo condiciones SELV.

Advertencia: Puertos RJ-45 Son enchufes de datos RJ-45 blindados.

No se pueden usar en los tradicionales enchufes telefónicos estándar, o
para conectar la unidad a una red PBX tradicional o red telefónica 
pública. Conecte únicamente a estos enchufes los conectores de datos
RJ-45, sistemas de telefonías de red o teléfonos de red.
A estos enchufes de datos se pueden conectar cables blindados o no
blindados con tomas hembra blindadas o no blindadas.

22

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 22

 


background image

Manufacturers Declaration of Conformity

3Com Corporation, 350 Campus Drive, Marlborough, 
MA 01752-3064, USA

Declares that the following products:

Date: June 2008

Brand Name: 3Com Corporation

Model Nos.: 3C16790C, 3C16791C

Equip Type: Fast Ethernet Switch 5 / Fast Ethernet Switch 8

Complies with Part 15 of the FCC rules. Operation is subject
to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation. Category 5 screened cables must be
used to ensure compliance with the Class B requirements of
the above standards. The use of unscreened cables complies
with the Class A requirements.

25

ENVIRONMENTAL STATEMENTS

For further details please refer to

http://www.3com.com/environment/index.html

REGULATORY NOTICES

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. These limits are designed to provide reason-
able 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 accor-
dance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or
television, which can be determined by turning the equip-
ment off and on, the user is encouraged to to try to correct
the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna
• Increase the separation distance between the equipment

and receiver

• Connect the equipment to an outlet on a circuit different

from that to which the receiver is connected

• Consult the dealer or an experienced radio / TV technician

for help

24

Tested to Comply 
With FCC Standards 
For Home or Office

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 24

 


background image

OBTAINING SUPPORT FOR YOUR PRODUCT

3Com offers product registration, case management, and
repair services through eSupport.3com. You must have a
user name and password to access these services, which are
described in this appendix.

Register Your Product to Gain Service Benefits

To take advantage of warranty and other service benefits, you
must first register your product at:
http://eSupport.3com.com/. 3Com eSupport services are
based on accounts that are created or that you are authorized
to access.

Solve Problems Online

3Com offers the following support tool:

• 3Com Knowledgebase — Helps you to troubleshoot 3Com

products. This query-based interactive tool is located at:
http://knowledgebase.3com.com. It contains thousands
of technical solutions written by 3Com support engineers. 

Purchase Extended Warranty and Professional
Services

To enhance response times or extend your warranty benefits,
you can purchase value-added services such as 24x7 tele-
phone technical support, software upgrades, onsite assis-
tance, or advanced hardware replacement.

27

CSA Statement

This Class B digital apparatus meets all requirements of the
CanadianInterference-Causing Equipment Regulations.

Cet appareil numérique de la classe B respecte toutes les exi-
gences du Règlementsur le matériel brouilleur du Canada.

CE Statement and Manufacturer's Declaration of conformity

A copy of the signed Declaration of Conformity can be down-
loaded from the Product Support web page at
http://www.3com.com/

Also available at
http://support.3com.com/doc/3C1679xC.pdf

VCCI Statement

26

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 26

 


background image

Telephone Technical Support and Repair

To obtain telephone support as part of your warranty and
other service benefits, you must first register your product at:
http://eSupport.3com.com/

When you contact 3Com for assistance, please have the fol-
lowing information ready:

• Product model name, part number, and serial number
• A list of system hardware and software, including revision

level

• Diagnostic error messages
• Details about recent configuration changes, if applicable
To send a product directly to 3Com for repair, you must first
obtain a return materials authorization number (RMA).
Products sent to 3Com without authorization numbers clearly
marked on the outside of the package will be returned to the
sender unopened, at the sender’s expense. If your product is
registered and under warranty, you can obtain an RMA num-
ber online at http://eSupport.3com.com/. First-time users
must apply for a user name and password.

Telephone numbers are correct at the time of publication.
Find a current directory of 3Com resources by region at:
http://csoweb4.3com.com/contactus/

29

Experienced engineers are available to manage your installa-
tion with minimal disruption to your network. Expert assess-
ment and implementation services are offered to fill resource
gaps and ensure the success of your networking projects. For
more information on 3Com Extended Warranty and
Professional Services, see: http://www.3com.com/

Contact your authorized 3Com reseller or 3Com for addition-
al product and support information. See the table of access
numbers later in this appendix.

Contact Us

3Com offers telephone, internet, and e-mail access to techni-
cal support and repair services. To access these services for
your region, use the appropriate telephone number, URL, or
e-mail address from the table in the next section. 

28

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 28

 


background image

Country Telephone 

Number

Europe, Middle East, and Africa — Telephone
Technical Support and Repair

From anywhere in these regions not listed below, 
call: +44 1442 435529

From the following countries, call the appropriate number:

Austria

0800 297 468 

Belgium

0800 71429 

Denmark

800 17309

Finland

0800 113153

France

0800 917959 

Germany

0800 182 1502

Hungary

06800 12813 

Ireland

1 800 553 117

Israel

180 945 3794

Italy

800 879489

Luxembourg

800 23625 

Netherlands

0800 0227788 

Norway

800 11376 

Poland

00800 4411 357

Portugal   

800 831416 

South Africa

0800 995 014 

Spain

900 938 919 

Sweden

020 795 482

Switzerland

0800 553 072 

U.K.

0800 096 3266

You can also obtain support in this region using this URL:
http://emea.3com.com/support/email.html

31

Country Telephone 

Number

Asia, Pacific Rim — Telephone Technical Support and
Repair

Australia

1800 075 316 

Hong Kong

2907 0456 

India

000 800 440 1193 

Indonesia

001 803 852 9825

Japan

03 3507 5984 

Malaysia

1800 812 612 

New Zealand

0800 450 454

Philippines

1800 144 10220 or 029003078 

P.R. of China

800 810 0504 

Singapore

800 616 1463 

South Korea

080 698 0880 

Taiwan

00801 444 318 

Thailand

001 800 441 2152

Pakistan Call the U.S. direct by dialing 00 800 01001, then
dialing 800 763 6780 

Sri Lanka Call the U.S. direct by dialing 02 430 430, then 
dialing 800 763 6780 

Vietnam Call the U.S. direct by dialing 1 201 0288, then 
dialing 800 763 6780

You can also obtain non-urgent support in this region at this
email address apr_technical_support@3com.com

Or request a return material authorization number (RMA) by
FAX using this number: +61 2 9937 5048, or send an email
at this email address: ap_rma_request@3com.com

30

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 30

 


background image

Country Telephone 

Number

Jamaica

AT&T +800 988 2112

Mexico

1800 849 2273

Mexico Local

+52-55-52-01-0004

Monserrat

AT&T +800 998 2112

Nicaragua

AT&T +800 998 2112

Panama

AT&T +800 998 2112

Paraguay

AT&T +800 998 2112

Peru

AT&T +800 998 2112

Puerto Rico

AT&T +800 998 2112

Rest of Latin America

508 323 6234

St. Kitts Nevis

AT&T +800 998 2112

St. Lucia

AT&T +800 998 2112

St. Vincent

AT&T +800 998 2112

Suriname

AT&T +800 998 2112

Trinidad and Tobago

AT&T +800 998 2112

Turks and Caicos

AT&T +800 998 2112

Uruguay - Montevideo

AT&T +800 998 2112

Venezuela

AT&T +800 998 2112

Virgin Islands

AT&T +800 998 2112

You can also obtain support in this region in the following ways:

Spanish speakers, enter the URL:
http://lat.3com.com/lat/support/form.html

Portuguese speakers, enter the URL:
http://lat.3com.com/br/support/form.html

English speakers in Latin America should send e-mail to:
lat_support_anc@3com.com

33

Country Telephone 

Number

Latin America — Telephone Technical Support and Repair

Antigua

AT&T +800 988 2112

Antigua Barbuda

AT&T +800 988 2112

Argentina

AT&T +800 988 2112

Aruba

AT&T +800 988 2112

Bahamas

AT&T +800 988 2112

Barbados

AT&T +800 988 2112

Belize

AT&T +800 988 2112

Bermuda

AT&T +800 988 2112

Bolivia

AT&T +800 988 2112

Brasil

0800-133266 (0800-13-3COM)

Brasil Local

+5511 5643 2700

British Virgin Islands

AT&T +800 988 2112

Cayman Islands

AT&T +800 988 2112

Chile

AT&T +800 998 2112

Colombia

AT&T +800 998 2112

Columbia Local

+571 592 5000

Costa Rica

AT&T +800 998 2112

Curaçao

AT&T +800 988 2112

Dominican Republic

AT&T +800 998 2112

El Salvador

AT&T +800 988 2112

Equador

AT&T +800 988 2112

French Guyana

AT&T +800 988 2112

Grenada

AT&T +800 988 2112

Guadalupe

AT&T +800 988 2112

Guatemala

AT&T +800 998 2112

Guyana

AT&T +800 988 2112

Haiti

AT&T +800 988 2112

Honduras

AT&T +800 998 2112

32

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 32

 


background image

COPYRIGHT AND TRADEMARKS

3Com Corporation, Corporate Headquarters, 350 Campus Drive, Marlborough, MA 01752-3064

Copyright © 2008 3Com Corporation. All rights reserved. 

Copyright
No part of any documentation supplied with this product may be reproduced in any form or by
any means or used to make any derivative work (such as translation, transformation, or adapta-
tion) without written permission from 3Com Corporation.

3Com Technologies reserves the right to revise any documentation supplied with this product
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 any documentation supplied with this product 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 any documentation supplied with this product at any time.

If there is any software on removable media described in any documentation supplied with this
product, it is furnished under a license agreement included with the product as a separate doc-
ument, 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 any documentation supplied with this
product and the software described therein are provided to you subject to the following: 

All technical data and computer software are commercial in nature and developed solely at pri-
vate 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 supplied
to you in connection with this product.

Trademarks
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.

All other company and product names may be trademarks of the respective companies with
which they are associated.

Please e-mail any comments about this document to 3Com at:
pddtechpubs_comments@3Com.com. Please include the document title, part number and if
appropriate, the page number.

35

Country Telephone 

Number

US and Canada — Telephone Technical Support and Repair

All locations:    All 3Com products:    1 800 876 3266

CHINA RoHS

34

The above table provides information required under the following Chinese legislation:
Management methods for Controlling Pollution by Electronic Information Products (No. 39)
(also known as China RoHS)

3C16790C_ 3C16791C_booklet  3/6/08  09:51  Page 34