Linksys Network Router WPG11 User Manual

TM  
Instant Wireless Series  
Wireless  
Presentation Gateway  
Use this guide to install:  
WPG11  
User Guide  
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Instant WirelessTM Series  
Wireless Presentation Gateway  
Table of Contents  
Chapter 1: Introduction  
r
Chapter 1: Introduction  
The Linksys Wireless Presentation Gateway  
Features  
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The Linksys Wireless Presentation Gateway  
Whether you’re giving presentations in the conference room or the board room,  
the Instant Wireless™ Wireless Presentation Gateway brings you the conven-  
ience 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 thats in line of sight via Infrastructure mode,  
making multimedia easier than it's ever been before!  
Package Contents  
Chapter 2: Getting to Know the Wireless  
Presentation Gateway  
The Wireless Presentation Gateways Ports  
The Wireless Presentation Gateways LEDs  
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Chapter 3: Connecting the  
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.  
Wireless Presentation Gateway  
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Chapter 4: Installing the Wireless  
Presentation Gateway’s Player  
Overview and Autorun  
Installing the Player  
Using the Player  
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Features  
Interoperable with IEEE 802.11b (DSSS) 2.4GHz-Compliant Equipment  
Chapter 5: Troubleshooting  
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No Additional Drivers Are Needed  
Appendix A: Planning Your Wireless Network  
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Up to 11 Mbps High-Speed Transfer Rate  
Appendix B: Upgrading the Wireless  
Presentation Gateway’s Firmware  
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Line of Sight Wireless Connectivity  
Appendix C: Using the Wireless Presentation  
Gateway in High-Speed Mode  
Low Interference and High Susceptibility Guarantee Reliable Performance  
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Equipped with One Standard VGA Port for Compatibility with Virtually  
Any Presentation Projector  
Appendix D: Glossary  
Appendix E: Specifications  
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Easy and Quick Setup  
Environmental  
25  
Free Technical Support—24 Hours a Day,  
7 Days a Week for North America Only  
Appendix F: Warranty Information  
Appendix G: Contact Information  
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1-Year Limited Warranty  
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Wireless Presentation Gateway  
Package Contents  
Chapter 2: Getting to Know the  
Wireless Presentation Gateway  
The Wireless Presentation Gateway’s Ports  
Figure 1-1  
One Instant WirelessTM Wireless Presentation Gateway  
Two Removable Antennas  
One Power Adapter  
One Setup CD-ROM with User Guide  
Registration Card and Quick Installation (not shown)  
Figure 2-1  
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.  
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.  
Power  
The Power adapter jack is where you will connect  
your power.  
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The Wireless Presentation Gateway’s LEDs  
Chapter 3: Connecting the  
Wireless Presentation Gateway  
1. Connect the serial cable, connected to your monitor or projector, to the  
Wireless Presentation Gateways TO Monitor/Projector” console port.  
Figure 2-2  
2. Plug the supplied power adapter into the jack on the Wireless Presentation  
Gateways back panel. Then, plug the other end into a power outlet.  
Power  
Red. The Power LED will light up when the Wireless  
Presentation Gateway is powered on.  
3. Proceed to Chapter 4: The Wireless Presentation Gateways Player.  
WLAN Act  
WLAN Link  
Green. The WLAN Act LED blinks when the Wireless  
Presentation Gateway is active.  
The installation is complete.  
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.  
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  
Installing the Player  
Chapter 4: The Wireless  
Note: The Wireless Presentation Gateways  
Player will NOT install onto a Windows NT PC.  
Click the Install  
tab on the autorun  
screen (as shown in  
Figure 4-1) and you  
will begin the  
installation proce-  
dure, bringing up a  
screen like that  
shown in Figure 4-  
2. Click the Next  
button to continue  
the installation pro-  
cedure.  
Presentation Gateway’s Player  
Overview and Autorun  
With the Wireless Presentation Gateways 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  
CDs 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 autorun pro-  
gram. You will then see the screen in Figure 4-1.  
Figure 4-2  
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:\Program  
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.  
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 proce-  
dure, placing the Player on your current 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.  
Figure 4-3  
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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.  
Figure 4-6  
Figure 4-4  
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 con-  
tinue.  
Using the Player  
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.  
Figure 4-5  
On the Players 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 wire-  
less PC and not allow access to your network or the Internet while the PC is uti-  
lizing the Wireless Presentation Gateway. For more information on High-Speed  
Mode, see Appendix C: Using the Wireless Presentation Gateway in High-  
Speed Mode.  
Click the radio button beside High-Speed Mode if you choose to use this mode.  
Then, click the Next button to continue.  
Figure 4-7  
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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.  
Chapter 5: Troubleshooting  
This section provides possible solutions to problems regarding the installation  
and operation of the Wireless Presentation Gateway. If you can’t find an answer  
Can I run an application from a remote computer over the wireless net-  
work?  
This will depend on whether or not the application is designed to be used over  
a network. Consult the applications user guide to determine if it supports oper-  
ation over a network.  
Can I use the Presentation Gateway 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:  
Figure 4-8  
CSMA/CA plus Acknowledge protocol  
Multi-Channel Roaming  
Automatic Rate Selection  
RTS/CTS feature  
Fragmentation  
Power Management  
Click the Take Control of the Presentation Gateway 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.  
The Presentation Gateways Player cannot detect the Presentation  
Gateway.  
Verify that the Presentation Gateways power is on and all of your wireless  
equipment complies with the 802.11B standard.  
Note: An easy way to pause and resume your presentation when  
using the Wireless Presentation Gateway is to use the hotkey combi-  
nation of ALT + F12. With the ALT + F12 hotkey combination, you  
can pause and resume your presentation easily from your keyboard.  
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.  
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What is Ad-hoc?  
What is a BSS ID?  
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 appli-  
cable at a departmental scale for a branch or SOHO operation.  
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?  
What is Infrastructure?  
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 main-  
taining a continuous connection to the wireless network stations and Wireless  
Network Access Points.  
An integrated wireless and wired LAN is called an Infrastructure configura-  
tion. Infrastructure is applicable to enterprise scale for wireless access to a cen-  
tral database, or wireless application for mobile workers.  
What is Roaming?  
Roaming is the ability of a portable computer user to communicate continu-  
ously while moving freely throughout an area greater than that covered by a sin-  
gle 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.  
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.  
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 trans-  
mitting data. Achieving these functions simultaneously requires a dynamic RF  
networking technology that links Wireless Network Access Points and nodes.  
In such a system, the users end node undertakes a search for the best possible  
access to the system. First, it evaluates such factors as signal strength and qual-  
ity, 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 Wireless Network Access Point and registers its address. Communications  
between end node and host computer can then be transmitted up and down the  
backbone.  
What is Spread Spectrum?  
Spread Spectrum technology is a wideband radio frequency technique devel-  
oped by the military for use in reliable, secure, mission-critical communica-  
tions 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).  
As the user moves on, the end nodes RF transmitter regularly checks the sys-  
tem 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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What is DSSS? What is FHSS? And what are their differences?  
Wireless Presentation Gateway  
Appendix A: Planning Your Wireless  
Network  
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 transmis-  
sion, 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.  
Network Topology  
A wireless LAN is exactly like a regular LAN, except that each network device in  
the LAN uses wireless technology to connect to the network. Computers in a wire-  
less LAN must be configured to share the same radio channel.  
Wireless components provides LAN access for wireless network devices. An inte-  
grated 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.  
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 fea-  
ture of scrambling. On the software side, the WLAN series offers the encryp-  
tion function (WEP) to enhance security and access control. Users can set it up  
depending upon their needs.  
An infrastructure configuration 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.  
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 file sharing.  
The use of a unique ID in a Basic Service Set is essential.  
The Wireless LAN Infrastructure configuration is appropriate for enterprise-scale  
wireless access to a central database, or as a wireless application for mobile users.  
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.  
Roaming  
Infrastructure mode also supports roaming capabilities for mobile users. More  
than one BSS can be configured as an Extended Service Set (ESS). This continu-  
ous network allows users to roam freely within an ESS. All wireless PCs within  
one Extended Service Set must be configured with the same SSID.  
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.  
Selecting a feasible radio channel and optimum access point position is recom-  
mended. Proper access point positioning combined with a clear radio signal will  
greatly enhance performance.  
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Ad-hoc versus Infrastructure Mode  
Appendix B: Upgrading the  
Wireless Presentation Gateway’s  
Firmware  
The Wireless Presentation Gateway functions with the use of firmware, pro-  
gramming written in the units internal memory. It is this firmware that enables  
the Wireless Presentation Gateway to function with the Player and makes it  
easy to use.  
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 by a wired network  
or need to share a peripheral, such as a printer, with the wired network 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  
Occasionally, this firmware will be upgraded, which could increase the  
Wireless Presentation Gateways stability or make it easier to use. New versions  
radial range of the  
access  
Multiple  
points  
point.  
access  
be  
can  
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.  
arranged to work in  
succession to extend  
the roaming range,  
and can be set up to  
communicate with  
your Ethernet hard-  
ware as well.  
Figure A-1  
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 com-  
puters is limited by the  
distance and interfer-  
ence directly between  
them.  
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 employed, however, Internet and Intranet  
access is functional, as shown in Figure C-2.  
Appendix C: Using the Wireless  
Presentation Gateway in High-  
Speed Mode  
The Wireless Presentation Gateway allows for High-Speed presentation trans-  
fer 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 con-  
nect 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.  
Figure C-2  
Figure C-1  
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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.  
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.  
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 end-  
point), the DSSS signal is recognized as the only valid signal, and interference  
is inherently rejected (ignored).  
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.  
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.  
Backbone - The part of a network that connects most of the systems and net-  
works 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).  
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 specifies 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.  
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.  
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.  
CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) - In local  
area networking, this is the CSMA technique that combines slotted time-divi-  
sion multiplexing with carrier sense multiple access/collision detection  
(CSMA/CD) to avoid having collisions occur a second time.  
Firmware - Code that is written onto read-only memory (ROM) or program-  
mable read-only memory (PROM). Once firmware has been written onto the  
ROM or PROM, it is retained even when the device is turned off.  
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 con-  
tents can easily be accessed, managed, and updated.  
Fragmentation - Breaking data into smaller units when transmitting over a net-  
work medium that cannot support the original size of the data.  
Download - To receive a file transmitted over a network. In a communications  
session, download means receive, upload means transmit.  
Gateway - A device that interconnects networks with different, incompatible  
communications protocols.  
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Hardware - Hardware is the physical aspect of computers, telecommunica-  
tions, and other information technology devices. The term arose as a way to dis-  
tinguish 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.  
Network - A system that transmits any combination of voice, video and/or data  
between users.  
Node - A network junction or connection point, typically a computer or work  
station.  
Hop - The link between two network nodes.  
Port - A pathway into and out of the computer or a network device. For exam-  
ple, the serial and parallel ports on a personal computer are external sockets for  
plugging in communications lines, modems and printers.  
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."  
Roaming - In an infrastructure mode wireless network, this refers to the abili-  
ty 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.  
The IEEE fosters the development of standards that often become national and  
international standards. The organization publishes a number of journals, has  
many local chapters, and several large societies in special areas, such as the  
IEEE Computer Society.  
RTS (Request To Send) - An RS-232 signal sent from the transmitting station  
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 infra-  
structure 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). Infrastructure mode is useful at  
a corporation scale, or when it is necessary to connect the wired and wireless  
networks.  
to the receiving station requesting permission to transmit.  
SOHO (Small Office/Home Office) - Market segment of professionals who  
work at home or in small offices.  
Spread Spectrum - Spread Spectrum technology is a wideband radio frequen-  
cy technique developed by the military for use in reliable, secure, mission-crit-  
ical communications systems. It is designed to trade off bandwidth efficiency  
for reliability, integrity, and security. In other words, more bandwidth is con-  
sumed 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).  
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 avail-  
able worldwide. This presents a truly revolutionary opportunity to place con-  
venient high-speed wireless capabilities in the hands of users around the globe.  
LAN - A local area network (LAN) is a group 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).  
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 net-  
work and is case-sensitive. Also known as "ESS ID."  
Mbps (MegaBits Per Second) - One million bits per second; unit of measure-  
ment for data transmission.  
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Instant WirelessTM Series  
Wireless Presentation Gateway  
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.  
Appendix E: Specifications  
Standard  
IEEE 802.11b  
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 impor-  
tant of which include edge connections, backbone connections, and wide-area  
connections.  
Channels  
11 Channels (US, Canada)  
13 Channels (Europe)  
14 Channels (Japan)  
Operating Range  
Up to 100m (328 ft.)  
Upgrade - To replace existing software or firmware with a newer version.  
LEDs  
Power, WLAN Act, WLAN Link  
Upload - To transmit a file over a network. In a communications session,  
upload means transmit, download means receive.  
Environmental  
Workgroup - Two or more individuals that share files and databases.  
Dimensions  
Unit Weight  
Power  
7.3” x 6.5” x 1.9” (186 mm x 165 mm x 48 mm)  
16 oz. (0.46 kg)  
External, 5V AC 2.5A  
Certifications  
Operating Temp.  
Storage Temp.  
FCC Class B, CE Mark  
32°F to 131°F (0°C to 55°C)  
14°F to 149°F (-10°C to 65°C)  
Operating Humidity 10% to 90% Non-Condensing  
Storage Humidity 10% to 90% Non-Condensing  
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Instant WirelessTM Series  
Wireless Presentation Gateway  
Appendix F: Warranty Information  
Appendix G: Contact 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.  
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  
Tech Support  
RMA Issues  
Fax  
800-546-5797 (LINKSYS)  
800-326-7114  
949-261-1288  
IN NO EVENT SHALL LINKSYS’ LIABILITY EXCEED THE PRICE PAID  
FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCIDEN-  
TAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE  
OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS DOCU-  
MENTATION. LINKSYS DOES NOT OFFER REFUNDS FOR ANY PROD-  
UCT.  
949-261-8868  
Email  
Web  
FTP Site  
ftp.linksys.com  
LINKSYS OFFERS CROSS SHIPMENTS, A FASTER PROCESS FOR PRO-  
CESSING 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.  
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© Copyright 2002 Linksys, All Rights Reserved.  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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