TRENDnet WRT-390L User manual

2.4GHz Wireless 802.11n(DRAFT) Giga Router
WRT-390L
Rev 0.7
User Manual

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Federal Communication Commission Interference 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
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. If this equipment does cause harmful 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 of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into 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.
This device 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.
FCC Caution: Any changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate this equipment.
IMPORTANT NOTE:
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance
20cm between the radiator & your body.
This transmitter must not be co-located or operating in conjunction with any other antenna
or transmitter.
The availability of some specific channels and/or operational frequency bands are country
dependent and are firmware programmed at the factory to match the intended destination.
The firmware setting is not accessible by the end user.
Copyright
This publication, including all photographs, illustrations and software, is protected under interna-
tional copyright laws, with all rights reserved. Neither this manual, nor any of the material con-
tained herein, may be reproduced without written consent of the author.
Copyright 2006

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Trademark recognition
All product names used in this manual are the properties of their respective owners and are
acknowledged.

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Table of Contents
Getting Started with the WRT-390L -------------------------------------3
PackageContents
Minimum System Requirements
Wireless LAN Networking ------------------------------------------- 5
Introduction
Features
Hardware Overview --------------------------------------------- 10
LED Indications
Rear Panel
Installation Considerations
GettingStarted
Using the Configuration Menu -----------------------------------12
Network
Wireless
Advanced
Administrator

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1. Getting Started with the WRT-390L
Congratulations on purchasing the WRT-390L! This manual provides information for setting up
and configuring the WRT-390L. This manual is intended for both home users and professionals.
The following conventions are used in this manual:
THE NOTE SYMBOL INDICATES ADDITIONAL INFORMATION ON THE
TOPIC AT HAND.
THE TIP SYMBOL INDICATES HELPFULL INFORMATION AND TIPS TO
IMPROVE YOUR NETWORK EXPERIENCE.
THE CAUTION SYMBOL ALERTS YOU TO SITUATIONS THAT MAY
DEGRADE YOUR NETWORKING EXPERIENCE OR COMPROMISE
LIKE NOTES AND TIPS, THE IMPORTANT SYMBOL INDICATES
INFORMATION THAT CAN IMPROVE NETWORKING. THIS INFORMATION
SHOULD NOT BE OVERLOOKED.

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1.1 Package Contents
 WRT-390L 2.4GHz Wireless 802.11n(DRAFT) Giga Router
 CAT-5 Ethernet Cable
 Power Adapter (12V, 1A)
 CD-ROM with Manual
 Quick Installation Guide
Using a power supply with a different voltage than the one included with your
product will cause damage and void the warranty for this product.
1.2 Minimum System Requirements
 Ethernet-Based Cable or DSL Modem
 Computers with Windows, Macintosh, or Linux-based operating systems with an installed
Ethernet adapter and CD-ROM Drive
 Internet Explorer Version 6.0 or Netscape Navigator Version 7.0 and Above

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2. Wireless LAN Networking
This section provides background information on wireless LAN networking technology. Consult
the Glossary for definitions of the terminology used in this section.
THE INFORMATION IN THIS SECTION IS FOR YOUR REFERENCE. CHANGING
NETWORK SETTINGS AND PARTICULARLY SECURITY SETTTINGS SHOULD ONLY
BE DONE BY AN AUTHORIZED ADMINISTRATOR.
Transmission Rate (Transfer Rate)
The WRT-390L provides various transmission (data) rate options for you to select. In most
networking scenarios, the factory default Best (automatic) setting proves the most efficient. This
setting allows your WRT-390L to operate at the maximum transmission (data) rate. When the
communication quality drops below a certain level, the WRT-390L automatically switches to a
lower transmission (data) rate. Transmission at lower data speeds is usually more reliable.
However, when the communication quality improves again, the WRT-390Lgradually increases the
transmission (data) rate again until it reaches the highest available transmission rate.
Types of Wireless Networks
Wireless LAN networking works in either of the two modes: ad-hoc and infrastructure. In infra-
structure mode, wireless devices communicate to a wired LAN via access points. Each access
point and its wireless devices are known as a Basic Service Set (BSS). An Extended Service Set
(ESS) is two or more BSSs in the same subnet. In ad hoc mode (also known as peer-to-peer
mode), wireless devices communicate with each other directly and do not use an access point.
This is an Independent BSS (IBSS).
To connect to a wired network within a coverage area using access points, set the operation mode
to Infrastructure (BSS). To set up an independent wireless workgroup without an access point, use
Ad-hoc (IBSS) mode.
AD-HOC (IBSS) NETWORK
Ad-hoc mode does not require an access point or a wired network. Two or more wireless stations
communicate directly to each other. An ad-hoc network may sometimes be referred to as an
Independent Basic Service Set (IBSS).
To set up an ad-hoc network, configure all the stations in ad-hoc mode. Use the same SSID and
channel for each station.

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When a number of wireless stations are connected using a single access point, you have a Basic
Service Set (BSS).
In the ESS diagram below, communication is done through the access points, which relay data
packets to other wireless stations or devices connected to the wired network. Wireless stations
can then access resources, such as a printer, on the wired network.

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In an ESS environment, users are able to move from one access point to another without losing the
connection. In the diagram below, when the user moves from BSS (1) to BSS (2) the WLAN client
devices automatically switches to the channel used in BSS (2).
Roaming in an ESS network diagram