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Use this guide to install:
WPG11
User Guide
Wireless
Presentation Gateway
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COPYRIGHT & TRADEMARKS
Copyright © 2002 Linksys, All Rights Reserved. Instant Wireless is a trademark of
Linksys. Microsoft, Windows, and the Windows logo are registered trademarks of
Microsoft Corporation. All other trademarks and brand names are the property of their
respective proprietors.
LIMITED WARRANTY
Linksys guarantees that every Instant Wireless™ Wireless Presentation Gateway will be
free from physical defects in material and workmanship for one year from the date of purchase, when used within the limits set forth in the Specification section of this User
Guide. If the product proves defective during this warranty period, call Linksys Customer
Support in order to obtain a Return Authorization Number. BE SURE TO HAVE YOUR
PROOF OF PURCHASE AND A BARCODE FROM THE PRODUCT’S PACKAGING ON
HAND WHEN CALLING. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT
PROOF OF PURCHASE. When returning a product, mark the Return Authorization
Number clearly on the outside of the package and include a copy of your original proof
of purchase. All customers located outside of the United States of America and Canada
shall be held responsible for shipping and handling charges.
IN NO EVENT SHALL LINKSYS’ LIABILITY EXCEED THE PRICE PAID FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS DOCUMENTATION. LINKSYS DOES NOT OFFER REFUNDS FOR ANY
PRODUCT. Linksys makes no warranty or representation, expressed, implied, or statutory, with respect to its products or the contents or use of this documentation and all
accompanying software, and specifically disclaims its quality, performance, merchantability, or fitness for any particular purpose. Linksys reserves the right to revise or
update its products, software, or documentation without obligation to notify any individual or entity. Please direct all inquiries to:
Linksys P.O. Box 18558, Irvine, CA 92623.
FCC STATEMENT
This Instant Wireless™ Wireless Presentation Gateway has been tested and complies with
the specifications 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 according to 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 is found 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 or relocate the receiving antenna
• Increase the separation between the equipment or devices
• Connect the equipment to an outlet other than the receiver’s
• Consult a dealer or an experienced radio/TV technician for assistance
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 and your body.
UG-WPG11-051002A KL
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Chapter 1: Introduction
r
Whether you’re giving presentations in the conference room or the board room,
the Instant Wireless™ Wireless Presentation Gateway brings you the convenience and reliability of wireless networking! Not only are wires no longer a
problem but neither is location. Connect to the Instant Wireless™ Wireless
Presentation Gateway from your wireless laptop via Infrastructure mode or
from any 802.11b wireless PC that’s in line of sight via Infrastructure mode,
making multimedia easier than it's ever been before!
The Instant Wireless™ Wireless Presentation Gateway can be placed within
your conference room or anywhere near the projector. A high-powered, built-in
antenna means that you're ready to present from anywhere within line of sight,
eliminating the need for cumbersome cables. So, you've got the flexibility and
performance you need to make great presentations combined with the ease of
wireless networking as only Linksys can provide.
• Interoperable with IEEE 802.11b (DSSS) 2.4GHz-Compliant Equipment
• No Additional Drivers Are Needed
• Up to 11 Mbps High-Speed Transfer Rate
• Line of Sight Wireless Connectivity
• Low Interference and High Susceptibility Guarantee Reliable Performance
• Equipped with One Standard VGA Port for Compatibility with Virtually
Any Presentation Projector
• Easy and Quick Setup
• Free Technical Support—24 Hours a Day,
7 Days a Week for North America Only
• 1-Year Limited Warranty
Instant WirelessTMSeries
Wireless Presentation Gateway
The Linksys Wireless Presentation Gateway
Features
Table of Contents
Chapter 1: Introduction 1
The Linksys Wireless Presentation Gateway 1
Features 1
Package Contents 2
Chapter 2: Getting to Know the Wireless
Presentation Gateway 3
The Wireless Presentation Gateway’s Ports 3
The Wireless Presentation Gateway’s LEDs 4
Chapter 3: Connecting the
Wireless Presentation Gateway 5
Chapter 4: Installing the Wireless
Presentation Gateway’s Player 6
Overview and Autorun 6
Installing the Player 7
Using the Player 8
Chapter 5: Troubleshooting 11
Appendix A: Planning Your Wireless Network 15
Appendix B: Upgrading the Wireless
Presentation Gateway’s Firmware 17
Appendix C: Using the Wireless Presentation
Gateway in High-Speed Mode 18
Appendix D: Glossary 20
Appendix E: Specifications 25
Environmental 25
Appendix F: Warranty Information 26
Appendix G: Contact Information 27
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Chapter 2: Getting to Know the
Wireless Presentation Gateway
Reset To reset the Wireless Presentation Gateway to its fac-
tory default settings, hold the Reset button in for
about ten seconds.
TO Monitor/Projector At this console port, you will connect the serial cable
that connects to the monitor or projector where your
presentation will be displayed.
Power The Power adapter jack is where you will connect
your power.
• One Instant WirelessTMWireless Presentation Gateway
• Two Removable Antennas
• One Po w er Adapter
• One Setup CD-ROM with User Guide
• Registration Card and Quick Installation (not shown)
Package Contents
The Wireless Presentation Gateway’s Ports
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Wireless Presentation Gateway
2 3
Note: As with any video system, image quality is only as good as
the weakest link in the video signal chain. In most cases, that
weakest link is the infrastructure cable. This especially holds true
for wireless transmission systems. To achieve the best possible
image quality with a wireless system, dedicate as much bandwidth
as possible to the video presentation.
Figure 1-1
Figure 2-1
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Wireless Presentation Gateway
Chapter 3: Connecting the
Wireless Presentation Gateway
1. Connect the serial cable, connected to your monitor or projector, to the
Wireless Presentation Gateway’s “TO Monitor/Projector” console por t.
2. Plug the supplied power adapter into the jack on the Wireless Presentation
Gateway’s back panel. Then, plug the other end into a power outlet.
3. Proceed to Chapter 4: The Wireless Presentation Gateway’s Player.
The installation is complete.
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Power Red. The Power LED will light up when the Wireless
Presentation Gateway is powered on.
WLAN Act Green. The WLAN Act LED blinks when the Wireless
Presentation Gateway is active.
WLAN Link Yellow. The WLAN Link LED indicates the status of the link.
The WLAN Link LED will be lit steadily when the Wireless
Presentation Gateway is connected to the wireless network.
The Wireless Presentation Gateway’s LEDs
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Note: As with any video system, image quality is only as good as
the weakest link in the video signal chain. In most cases, that
weakest link is the infrastructure cable. This especially holds true
for wireless transmission systems. To achieve the best possible
image quality with a wireless system, dedicate as much bandwidth
as possible to the video presentation.
Figure 2-2
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Wireless Presentation Gateway
Click the Install
tab on the autorun
screen (as shown in
Figure 4-1) and you
will begin the
installation procedure, bringing up a
screen like that
shown in Figure 4-
2. Click the Next
button to continue
the installation procedure.
The next screen, like that shown in Figure 4-3, will allow you to choose where
the Player will be installed. By default, the destination folder is C:\Prog ram
Files\WPG11 Player. You can change this, if you wish, by clicking the Browse
button and selecting another destination where it will be installed. Once the
destination has been selected, click the Next button to continue.
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Chapter 4: The Wireless
Presentation Gateway’s Player
With the Wireless Presentation Gateway’s Player, you can connect to the
Wireless Presentation Gateway from any PC in your wireless network. To
install the Player, insert the Setup CD-ROM into your CD-ROM drive. The
CD’s autorun program should start automatically, bringing up the screen shown
in Figure 4-1. If the autorun does not start automatically, click the Start button,
select Run, and type d:\setup.exe in the Open field to start the autor un program. You will then see the screen in Figure 4-1.
The autorun screen presents you with several options for using the Wireless
Presentation Gateway. Clicking the Install tab will start the installation procedure, placing the Player on your cur rent PC. Clicking Uninstall will begin a
simple procedure for removing the Player. Click the User Guide tab to view
this User Guide. If you need to contact Linksys for technical support, click the
Contact Us tab for that information. Clicking the Exit tab will close the
autorun.
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Installing the Player
Figure 4-2
Overview and Autorun
Figure 4-1
Figure 4-3
Note: The Wireless Presentation Gateway’s
Player will NO T install onto a W indo ws NT PC.
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Wireless Presentation Gateway
The following screen, shown in Figure 4-7, will allow you to select which
Wireless Presentation Gateway you will be using. If no Wireless Presentation
Gateway is found, a screen will appear with instructions on how to manually
detect the Wireless Presentation Gateway. Once you’ve selected the Wireless
Presentation Gateway from the drop-down menu, click the Next button to continue.
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The Player will now install. When you see the final installation screen, like that
shown in Figure 4-4, click the Finish button.
To use the Player, simply double-click the Linksys desktop
icon (like that shown in Figure 4-5) or select the program
from the Program Folder. This will bring up the Wireless
Presentation Gateway Player screen, as shown in Figure 4-
6.
On the Player’s Welcome screen, you will be given the option of using the
Wireless Presentation Gateway in High-Speed Mode. This mode will allow
faster transfer of data to your projector or monitor, but will isolate your wireless PC and not allow access to your network or the Internet while the PC is utilizing the W ireless Presentation Gate w ay. For more information on High-Speed
Mode, see Appendix C: Using the Wireless Presentation Gateway in HighSpeed Mode.
Click the radio button beside High-Speed Mode if you choose to use this mode.
Then, click the Next button to continue.
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Using the Player
Figure 4-5
Figure 4-6
Figure 4-4
Figure 4-7
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Wireless Presentation Gateway
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The next screen, shown in Figure 4-8, allows you to select your Presentation
Options. Basic Color allows faster speed with less color , while True Color gives
you more color at a slower speed. Choose the option that works best with your
presentation.
Click the T ak e Contr ol of the Pr esentation Gatew ay button to start your pres-
entation. To pause your presentation or allow access to another user, click the
Give Control to Another User button. When you have completed using the
Wireless Presentation Gateway, click the Exit button.
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Chapter 5: Troubleshooting
This section provides possible solutions to problems regarding the installation
and operation of the W ireless Presentation Gate w a y. If you can’t find an answer
here, check the Linksys website at www.linksys.com.
Can I run an application from a remote computer over the wireless network ?
This will depend on whether or not the application is designed to be used over
a network. Consult the application’s user guide to determine if it supports operation over a network.
Can I use the Presentation Gatew ay with non-Linksys wireless equipment?
Yes, as long as you use it with wireless equipment that complies with the IEEE
802.11b standard.
What is the IEEE 802.11b standard?
It is the IEEE standard for wireless networks. This standard allows wireless
LAN hardware from different manufacturers to communicate.
What IEEE 802.11b features are supported?
The product supports the following IEEE 802.11 functions:
• CSMA/CA plus Acknowledge protocol
• Multi-Channel Roaming
• Automatic Rate Selection
• RTS/CTS feature
• Fragmentation
• Power Management
The Presentation Gateway’s Player cannot detect the Presentation
Gateway.
Verify that the Presentation Gateway’s power is on and all of your wireless
equipment complies with the 802.11B standard.
Why can’t I access the Internet/Intranet while using the Presentation
Gateway?
Make sure you are not using the Presentation Gateway in High-Speed Mode.
This would prevent access to the Internet or Intranet.
Figure 4-8
Note: An easy way to pause and resume your presentation when
using the Wireless Presentation Gateway is to use the hotkey combination of ALT + F12. With the ALT + F12 hotkey combination, you
can pause and resume your presentation easily from your keyboard.
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Wireless Presentation Gateway
What is a BSS ID?
A specific Ad-hoc LAN is called a Basic Service Set (BSS). Computers in a
BSS must be configured with the same BSS ID.
What is an ESS ID?
An Infrastructure configuration could also support roaming capability for
mobile workers. More than one BSS can be configured as an Extended Service
Set (ESS). Users within an ESS could roam freely between BSSs while maintaining a continuous connection to the wireless network stations and Wireless
Network Access Points.
What is ISM band?
The FCC and their counterparts outside of the U.S. have set aside bandwidth
for unlicensed use in the ISM (Industrial, Scientific and Medical) band.
Spectrum in the vicinity of 2.4 GHz, in particular, is being made available
worldwide. This presents a truly revolutionary opportunity to place convenient
high speed wireless capabilities in the hands of users around the globe.
What is Spread Spectrum?
Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency for reliability,
integrity, and security. In other words, more bandwidth is consumed than in the
case of narrowband transmission, but the trade-off produces a signal that is, in
effect, louder and thus easier to detect, provided that the receiver knows the
parameters of the spread-spectrum signal being broadcast. If a receiver is not
tuned to the right frequency, a spread-spectrum signal looks like background
noise. There are two main alternatives, Direct Sequence Spread Spectrum
(DSSS) and Frequency Hopping Spread Spectrum (FHSS).
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What is Ad-hoc?
An Ad-hoc wireless LAN is a group of computers, each with a WLAN adapter,
connected as an independent wireless LAN. An Ad-hoc wireless LAN is applicable at a departmental scale for a branch or SOHO operation.
What is Infrastructure?
An integrated wireless and wired LAN is called an Infrastructure conf iguration. Infrastructure is applicable to enterprise scale for wireless access to a central database, or wireless application for mobile workers.
What is Roaming?
Roaming is the ability of a portable computer user to communicate continuously while mo ving freel y throughout an area greater than that co vered b y a single Wireless Network Access Point. Before using the roaming function, the
workstation must make sure that it is the same channel number as the Wireless
Network Access Point of the dedicated coverage area.
To achieve true seamless connectivity, the wireless LAN must incorporate a
number of different functions. Each node and Wireless Network Access Point,
for example, must always acknowledge receipt of each message. Each node
must maintain contact with the wireless network even when not actually transmitting data. Achieving these functions simultaneously requires a dynamic RF
networking technology that links Wireless Network Access Points and nodes.
In such a system, the user’s end node under takes a search for the best possible
access to the system. First, it ev aluates such factors as signal strength and quality, as well as the message load currently being carried by each Wireless
Network Access Point and the distance of each Wireless Network Access Point
to the wired backbone. Based on that information, the node next selects the
right W ireless Netw ork Access Point and registers its address. Communications
between end node and host computer can then be transmitted up and down the
backbone.
As the user moves on, the end node’s RF transmitter regularly checks the system to determine whether it is in touch with the original Wireless Network
Access Point or whether it should seek a new one. When a node no longer
receives acknowledgment from its original Wireless Network Access Point, it
undertakes a new search. Upon finding a new Wireless Network Access Point,
it then re-registers, and the communication process continues.
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Wireless Presentation Gateway
Appendix A: Planning Your Wireless
Network
Network Topology
A wireless LAN is exactly lik e a re gular LAN, except that each network device in
the LAN uses wireless technology to connect to the network. Computers in a wireless LAN must be configured to share the same radio channel.
Wireless components pro vides LAN access for wireless network devices. An integrated wireless and wired LAN is called an Infrastructure configuration. A group
of wireless users and an access point compose a Basic Service Set (BSS). Each
PC equipped with a wireless adapter in a BSS can talk to any computer in a wired
LAN infrastructure.
An infrastructure conf iguration extends the accessibility of a wireless user to a
wired LAN, and doubles the effective wireless transmission range for wireless
PCs. Since the access point is able to forward data within its BSS, the effective
transmission range in an infrastructure LAN is doubled.
The use of a unique ID in a Basic Service Set is essential.
The W ireless LAN Infrastructure configuration is appropriate for enterprise-scale
wireless access to a central database, or as a wireless application for mobile users.
Roaming
Infrastructure mode also supports roaming capabilities for mobile users. More
than one BSS can be configured as an Extended Service Set (ESS). This continuous network allows users to roam freely within an ESS. All wireless PCs within
one Extended Service Set must be configured with the same SSID.
Selecting a feasible radio channel and optimum access point position is recommended. Proper access point positioning combined with a clear radio signal will
greatly enhance performance.
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What is DSSS? What is FHSS? And what are their differences?
Frequency Hopping Spread Spectrum (FHSS) uses a narrowband carrier that
changes frequency in a pattern that is known to both transmitter and receiver.
Properly synchronized, the net effect is to maintain a single logical channel. To
an unintended receiver, FHSS appears to be short-duration impulse noise.
Direct Sequence Spread Spectrum (DSSS) generates a redundant bit pattern for
each bit to be transmitted. This bit pattern is called a chip (or chipping code).
The longer the chip, the greater the probability that the original data can be
recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data
without the need for retransmission. To an unintended receiver, DSSS appears
as low power wideband noise and is rejected (ignored) by most narrowband
receivers.
Would the information be intercepted while transmitting on air?
WLAN features two-fold protection in security. On the hardware side, as with
Direct Sequence Spread Spectrum technology, it has the inherent security feature of scrambling. On the software side, the WLAN series offers the encryption function (WEP) to enhance security and access control. Users can set it up
depending upon their needs.
Can Instant Wireless products support file and printer sharing?
Instant Wireless products perform the same function as LAN products.
Therefore, Instant Wireless products can work with NetWare, Windows
NT/2000, or other LAN operating systems to support printer or f ile sharing.
I am using 802.11b-compliant wireless equipment but still cannot connect
to my wireless network.
Verify that you are using the same IP domain as that of your wireless network.
Note: As with any Video system, image quality is only as good as
the weakest link in the video signal chain. In most cases, that
weakest link is the infrastructure cable. This especially holds true
for wireless transmission systems. To achieve the best possible
image quality with a wireless system, dedicate as much bandwidth
as possible to the video presentation.
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Wireless Presentation Gateway
Appendix B: Upgrading the
Wireless Presentation Gateway’s
Firmware
The Wireless Presentation Gateway functions with the use of firmware, programming written in the unit’s internal memory. It is this firmware that enables
the Wireless Presentation Gateway to function with the Player and makes it
easy to use.
Occasionally, this firmware will be upgraded, which could increase the
Wireless Presentation Gatew a y’s stability or make it easier to use. New versions
of the fir mware can be found on the Linksys web site at www.linksys.com.
To upgrade this firmware, download it from the website and then double-click
the file wherever it has been saved. You will be walked through instructions on
how to upgrade the firmware.
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Ad-hoc versus Infrastructure Mode
Unlike wired networks, wireless networks have two different modes in which
they may be set up: Infrastructure and Ad-hoc. Choosing between these two
modes depends on whether or not the wireless network needs to share data or
peripherals with a wired network or not.
If the computers on the wireless network need to be accessible b y a wired network
or need to share a peripheral, such as a printer, with the wired netw ork computers,
the wireless network should be set up in the Infrastructure mode, as shown in
Figure A-1. The basis of Infrastructure mode centers around an access point,
which serves as the main point of communications in a wireless network. Access
points transmit data to PCs equipped with wireless network card, which can
roam within a certain
radial range of the
access point.
Multiple access
points can be
arranged to work in
succession to extend
the roaming range,
and can be set up to
communicate with
your Ethernet hardware as well.
If the wireless network is relatively small and needs to share resources only
with the other computers on the wireless network, then the Ad-hoc mode can
be used, as shown in Figure A-2. Ad-hoc mode allows computers equipped
with wireless transmitters and receivers to communicate directly with each
other, eliminating the need for an access point. The drawback of the Ad-hoc
mode is that wireless-equipped computers are not able to communicate with
computers on a wired network. In addition, communication between the wire-
less-equipped computers is limited by the
distance and interference directly between
them.
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Figure A-1
Figure A-2
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Wireless Ethernet Workgroup Bridge
Notice that there is no Internet or Intranet connection allowed in High-Speed
Mode. When High-Speed mode is not emplo y ed, how e v er, Internet and Intranet
access is functional, as shown in Figure C-2.
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Appendix C: Using the Wireless
Presentation Gateway in HighSpeed Mode
The Wireless Presentation Gateway allows for High-Speed presentation transfer rates with its High-Speed Mode. In High-Speed Mode, your presentation
will be transferred to the projector at a faster rate but you will be unable to connect to the Internet or a Intranet. When not using the High-Speed Mode,
Internet and Intranet connection is possible.
For an idea of how this works, please see Figure C-1 for how your wireless PC
would function when using the Wireless Presentation Gateway in High-Speed
Mode.
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Figure C-1
Figure C-2
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Driver - A workstation software module that provides an interface between a
network interface card and the upper-layer protocol software running in the
computer; it is designed for a specific NIC, and is installed during the initial
installation of a network-compatible client operating system.
DSSS (Direct-Sequence Spread Spectrum) - DSSS generates a redundant bit
pattern for all data transmitted. This bit pattern is called a chip (or chipping
code). Even if one or more bits in the chip are damaged during transmission,
statistical techniques embedded in the receiver can recover the original data
without the need for retransmission. To an unintended receiver, DSSS appears
as low power wideband noise and is rejected (ignored) by most narrowband
receivers. However, to an intended receiver (i.e. another wireless LAN endpoint), the DSSS signal is recognized as the only valid signal, and interference
is inherently rejected (ignored).
Encryption - A security method that applies a specific algorithm to data in
order to alter the data's appearance and prevent other devices from reading the
information.
ESS (Extended Service Set) - A set of more than two or more BSSs (multiple
access points) forming a single network.
Ethernet - IEEE standard network protocol that specif ies how data is placed
on and retrieved from a common transmission medium. Has a transfer rate of
10 Mbps. Forms the underlying transport vehicle used by several upper-level
protocols, including TCP/IP and XNS.
FHSS (Frequency Hopping Spread Spectrum) - FHSS continuously changes
(hops) the carrier frequency of a conventional carrier several times per second
according to a pseudo-random set of channels. Because a fixed frequency is not
used, and only the transmitter and receiver know the hop patterns, interception
of FHSS is extremely difficult.
Firmware - Code that is written onto read-only memory (ROM) or programmable read-only memory (PROM). Once firmware has been written onto the
ROM or PROM, it is retained even when the device is turned off.
Fragmentation- Breaking data into smaller units when transmitting over a network medium that cannot support the original size of the data.
Gateway - A device that interconnects networks with different, incompatible
communications protocols.
Appendix D: Glossary
Adapter - Printed circuit board that plugs into a PC to add to capabilities or
connectivity to a PC. In a networked environment, a network interface card
(NIC) is the typical adapter that allows the PC to connect to the intranet and/or
Internet.
Ad-hoc Network - An ad-hoc network is a group of computers, each with a
wireless adapter, connected as an independent 802.11 wireless LAN. Ad-hoc
wireless computers operate on a peer-to-peer basis, communicating directly
with each other without the use of an access point. Ad-hoc mode is also
referred to as an Independent Basic Service Set (IBSS) or as peer-to-peer
mode, and is useful at a departmental scale or SOHO operation.
Backbone - The part of a network that connects most of the systems and networks together and handles the most data.
Bandwidth - The transmission capacity of a given facility, in terms of how
much data the facility can transmit in a fixed amount of time; expressed in bits
per second (bps).
Bit - A binary digit. The value - 0 or 1-used in the binary numbering system.
Also, the smallest form of data.
BSS (Basic Service Set) - An infrastructure network connecting wireless
devices to a wired network using a single access point.
CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) - In local
area networking, this is the CSMA technique that combines slotted time-division multiplexing with carrier sense multiple access/collision detection
(CSMA/CD) to avoid having collisions occur a second time.
CTS (Clear To Send) - An RS-232 signal sent from the receiving station to the
transmitting station that indicates it is ready to accept data.
Database - A database is a collection of data that is organized so that its contents can easily be accessed, managed, and updated.
Download - To receive a file transmitted over a network. In a communications
session, download means receive, upload means transmit.
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Wireless Presentation Gateway
Network- A system that transmits any combination of v oice, video and/or data
between users.
Node - A network junction or connection point, typically a computer or work
station.
Port - A pathway into and out of the computer or a network device. For example, the serial and parallel ports on a personal computer are external sockets for
plugging in communications lines, modems and printers.
Roaming - In an infrastructure mode wireless network, this refers to the ability to move out of one access point's range and into another and transparently
reassociate and reauthenticate to the new access point. This reassociation and
reauthentication should occur without user intervention and ideally without
interruption to network connectivity. A typical scenario would be a location
with multiple access points, where users can physically relocate from one area
to another and easily maintain connectivity.
RTS (Request To Send) - An RS-232 signal sent from the transmitting station
to the receiving station requesting permission to transmit.
SOHO (Small Office/Home Off ice) - Market segment of professionals who
work at home or in small offices.
Spread Spectrum - Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency
for reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband transmission, but the trade off produces
a signal that is, in effect, louder and thus easier to detect, provided that the
receiver knows the parameters of the spread-spectrum signal being broadcast.
If a receiver is not tuned to the right frequency, a spread-spectrum signal looks
like background noise. There are two main alternatives, Direct Sequence
Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).
SSID (Service Set IDentifier) - A unique name shared among all points in a
wireless network. The SSID must be identical for each point in the wireless network and is case-sensitive. Also known as "ESS ID."
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Hardware - Hardware is the physical aspect of computers, telecommunications, and other information technology devices. The term arose as a wa y to distinguish the "box" and the electronic circuitry and components of a computer
from the program you put in it to make it do things. The program came to be
known as the software.
Hop - The link between two network nodes.
IEEE (The Institute of Electrical and Electronics Engineers) - The IEEE
describes itself as "the world's largest technical professional society, promoting
the development and application of electrotechnology and allied sciences for
the benefit of humanity, the advancement of the profession, and the well-being
of our members."
The IEEE fosters the development of standards that often become national and
international standards. The organization publishes a number of jour nals, has
many local chapters, and several large societies in special areas, such as the
IEEE Computer Society.
Infrastructure Network - An infrastructure network is a group of computers
or other devices, each with a wireless adapter, connected as an 802.11 wireless
LAN. In infrastructure mode, the wireless devices communicate with each
other and to a wired network by first going through an access point. An infrastructure wireless network connected to a wired network is referred to as a
Basic Service Set (BSS). A set of two or more BSS in a single network is
referred to as an Extended Service Set (ESS). Infrastr ucture mode is useful at
a corporation scale, or when it is necessary to connect the wired and wireless
networks.
ISM band - The FCC and their counterparts outside of the U.S. have set aside
bandwidth for unlicensed use in the ISM (Industrial, Scientific and Medical)
band. Spectrum in the vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in the hands of users around the globe.
LAN - A local area network (LAN) is a g roup of computers and associated
devices that share a common communications line and typically share the
resources of a single processor within a small geographic area (for example,
within an office building).
Mbps (MegaBits Per Second) - One million bits per second; unit of measure-
ment for data transmission.
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Appendix E: Specifications
Standard IEEE 802.11b
Channels 11 Channels (US,Canada)
13 Channels (Europe)
14 Channels (Japan)
Operating Range Up to 100m (328 ft.)
LEDs Power,WLAN Act, WLAN Link
Dimensions 7.3” x 6.5”x 1.9” (186 mm x 165 mm x 48 mm)
Unit Weight 16 oz. (0.46 kg)
Power External, 5V AC 2.5A
Certifications FCC Class B,CE Mark
Operating Temp. 32°F to 131°F (0°C to 55°C)
Storage Temp. 14°F to 149°F (-10°C to 65°C)
Operating Humidity 10% to 90% Non-Condensing
Storage Humidity 10% to 90% Non-Condensing
25
Instant WirelessTMSeries
TCP/IP (Transmission Control Protocol/Internet Protocol) - The basic com-
munication language or set of protocols for communications over a network
(developed specifically for the Internet). TCP/IP defines a suite or group of
protocols and not only TCP and IP.
Topology - A network's topology is a logical characterization of how the
devices on the network are connected and the distances between them. The
most common network devices include hubs, switches, routers, and gateways.
Most large networks contain several levels of interconnection, the most important of which include edge connections, backbone connections, and wide-area
connections.
Upgrade - To replace existing software or firmware with a newer version.
Upload - To transmit a file over a network. In a communications session,
upload means transmit, download means receive.
Workgroup - Two or more individuals that share files and databases.
24
Environmental
Page 16
Wireless Presentation Gateway
Appendix G: Contact Information
For help with the installation or operation of this product, contact Linksys
Customer Support at one of the phone numbers or Internet addresses below.
Sales Information 800-546-5797 (LINKSYS)
Tech Support 800-326-7114
RMA Issues 949-261-1288
Fax 949-261-8868
Email support@linksys.com
Web http://www.linksys.com
FTP Site ftp.linksys.com
27
Instant WirelessTMSeries
26
Appendix F: Warranty Information
BE SURE TO HAVE YOUR PROOF OF PURCHASE AND A BARCODE
FROM THE PRODUCT'S PACKAGING ON HAND WHEN CALLING.
RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF
PURCHASE.
IN NO EVENT SHALL LINKSYS’LIABILITY EXCEED THE PRICE PAID
FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE
OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS DOCUMENTATION. LINKSYS DOES NOT OFFER REFUNDS FOR ANY PRODUCT.
LINKSYS OFFERS CROSS SHIPMENTS, A FASTER PROCESS FOR PROCESSING AND RECEIVING YOUR REPLACEMENT. LINKSYS PAYS
FOR UPS GROUND ONLY. ALL CUSTOMERS LOCATED OUTSIDE OF
THE UNITED STATES OF AMERICA AND CANADA SHALL BE HELD
RESPONSIBLE FOR SHIPPING AND HANDLING CHARGES. PLEASE
CALL LINKSYS FOR MORE DETAILS.
Page 17
© Copyright 2002 Linksys,All Rights Reserved.
http://www.linksys.com
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