3Com 3CNJ100 - IntelliJack Switch Manual de usuario
NJ100 Network Jack
3CNJ100
4-port 10/100 Mbps Unmanaged
Ethernet Switch
Installation Guide
http://www.3com.com/
http://www.3com.com/productreg
09-2141-000
Published September 2001
3Com Corporation
■
5400 Bayfront Plaza
Santa Clara, California
■
95052-8145
■
U.S.A.
Copyright © 2001 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.
Unless otherwise indicated, 3Com registered trademarks are registered in the
United States and may or may not be registered in other countries.
3Com is a registered trademark and the 3Com logo is a trademark of
3Com Corporation. All other company and product names may be trademarks
of the respective companies with which they are associated.
About the Network Jack 2
Before You Begin 6
Obtaining Optional Components 7
Installing the Network Jack 8
Setting up the Power Supply 10
Using an Integrated Switch with Power Over
Ethernet 10
Using a Multi-port Ethernet Power Supply 10
Using a Single-port Ethernet Power Supply 12
Using the 3Com Local Power Supply 12
Setting the Power Over Ethernet Dip Switches 13
Installing the Adapter Plate and Pass-Through Ports 15
Planning the Installation 17
Setting up the Network Cabling at Your Site 19
Connecting the Network Jack to the Network 19
Mounting the Network Jack 22
Connecting the Local Power Supply (Optional) 23
Connecting Devices to the Network Jack 23
Checking the LEDs 24
Troubleshooting the Network Jack 24
Specifications 26
Contents
Contents
Contacting Technical Support 28
One-Year Free Installation Support 28
Online Technical Services 29
World Wide Web Site 29
3Com Knowledgebase Web Services 29
3Com FTP Site 30
Support from Your Network Supplier 30
Support from 3Com 31
Returning Products for Repair 31
3Com Corporation Limited Warranty 33
FCC Class A Verification Statement 37
FCC Declaration of Conformity 37
1
The 3Com Network Jack is a 4-port, unmanaged Ethernet switch
that fits into any standard electrical wall outlet or data port
opening.
The Network Jack brings switching capabilities to any single port
on an Ethernet network by allowing up to four networking
devices, such as computers, printers, Voice Over IP (VoIP)
telephones, and scanners, to be connected to the network via
one Ethernet port. Optional connectors are also available that
allow up to two additional devices to be connected to separate
network segments through the same Network Jack.
The Network Jack needs no software to operate and little or no
configuration. All ports feature 10/100 Mbps auto-negotiation,
which configures the Network Jack for 10 Mbps or 100 Mbps
connections automatically.
Power to the Network Jack can be provided one of the following ways:
■
Over the network via an integrated switch that supports
Power Over Ethernet; specifically, a switch that is compatible
with Capacitive Power Discovery Process (24V or 48V) or IEEE
802.3af-compatible Power Over Ethernet. Power Over
Ethernet, also known as in-line power, is a feature that
provides power onto an Ethernet cable, allowing a device to
receive both data and power from the same network cable.
■
Over the network via an optional single-port or multi-port
Ethernet power supply. See “Setting up the Power Supply”
on page 10 for more information.
■
Locally via an optional local power supply. See “Using the
3Com Local Power Supply” on page 12 for more information.
Installation Guide
Installation Guide
2
About the Network Jack
The following diagram shows the front view of the Network Jack.
3
2
1
4
1
2
3
4
5
About the Network Jack
3
1 Switched ports Allow up to four devices to be connected to
the network.
Port number 1 is also a power-forwarding port;
it can be used with any standard networking
device as well as to power a VoIP telephone on
a network that uses IEEE 802.3af-compatible
Power Over Ethernet.
2 Slot for adapter
plate
Can be fitted with an adapter plate, which
can be installed with up to two pass-through
ports.
3 Adapter plate
with installed
pass-through
port connector
Can be used for voice or other networking
applications. The port bypasses the
functionality of the switch, allowing you to
set up a connection to a separate network
segment or to connect to an analog or digital
PBX telephone.
The adapter plates are available from 3Com.
However, you must purchase the connectors
from the manufacturer. See “Installing the
Adapter Plate and Pass-Through Ports” on
page 15 for more information.
4 LEDs
5 Power socket Can be used to power the Network Jack with
a local power supply (available for purchase
from 3Com); required if your network does
not support Power Over Ethernet.
Indicates network connection status.
Indicates power status.
Installation Guide
4
The following diagram shows the back view of the Network Jack.
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1
3
2
4
About the Network Jack
5
1 Ethernet uplink
port
Connects the Network Jack to the network.
Make sure the port on the network switch
to which the Network Jack is connected is
configured as a standard MDI-X port.
2 Slot for adapter
plate
Can be fitted with an adapter plate, which can
be installed with up to two pass-through ports.
3 Adapter plate
with installed
pass-through
port connector
Connects the installed pass-through port to
the network.
4 Dip switches Determine the type of Power Over Ethernet
(Capacitive Power Discovery Process 24V or
48V or IEEE 802.3af) the Network Jack uses.
Setting the dip switches is required only if your
network supports Power Over Ethernet, or if
you are using a multi-port Ethernet power
supply. See “Setting the Power Over Ethernet
Dip Switches” on page 13 for instructions.
Installation Guide
6
Before You Begin
Before you begin installation, register your product at:
www.3com.com/productreg.
The Network Jack is available in single- and 20-packs. Before you
begin the installation, make sure you have the following items,
which are included with the Network Jack:
■
6x32 screws (2 per Network Jack) for mounting the
Network Jack to the wall or office cubicle.
■
RJ-45 coupler cable (1 per Network Jack) for connecting
the Ethernet cable from the network to the Network Jack
(required only if your network cable is terminated with a
female RJ-45 connector).
■
Installation guide (1 per package).
Additionally, the following items are shipped with the single pack:
■
Adapter plates for installing connectors to use as pass-
through ports. The adapter plates accommodate connectors
from suppliers including:
■
Panduit (RJ-45 and RJ-11)
■
Avaya (RJ-45 and RJ-11)
■
Adapter plate screws (2) for mounting the adapter plate to
the Network Jack.
NOTE:
The connectors for the adapter plates must be
purchased from the manufacturer. For a list of supported
connectors, go to www.3com.com/.
Este manual sirve para los siguientes modelos
2
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