CC and C Technologies WL1201M WLAN USB Module User Manual Revised sample

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Revised user manual sample

IEEE 802.11bWireless LAN USB Dongle User’s GuideVersion 5.0

WLAN USB Dongle User’s Guide2REGULATION INFORMATIONThe WLAN USB Dongle must be installed and used in strict accordance with themanufacturer’s instructions. This device complies with the following radio frequencyand safety standards.FCC (Federal Communications Commission)This device complies with Part 15 of FCC Rules. Operation is subject to the followingtwo conditions:1. This device may not cause harmful interference.2. This device must accept any interference that may cause undesired operation.FCC Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for anuncontrolled environment.This transmitter must not be co-located or operating in conjunction with any otherantenna or transmitter.The equipment has been tested and found to comply with the limits for a Class BDigital Device, pursuant to part 15 of the FCC Rules. These limits are designed toprovide reasonable protection against harmful interference in a residential installation.This equipment generates, uses and can radiate radio frequency energy and, if notinstalled and used in accordance with the instruction, may cause harmful interferenceto radio communication. However, there is no grantee that interference will not occurin a particular installation. If this equipment dose cause harmful interference to radioor 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 or more of the followingmeasures:--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 thereceiver is connected.--Consult the dealer or an experienced radio/TV technician for help. FCC Caution: Any changes or modifications not expressly approved by the partyresponsible for compliance could void the user's authority to operate this equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to thefollowing two conditions: (1) This device may not cause harmful interference, and (2)this device must accept any interference received, including interference that maycause undesired operation. Warning: When installing the WLAN USB Dongle, the ferrite shall be placed on theUSB cable for compliance.

WLAN USB Dongle User’s Guide3R&TTE DirectiveThis device complies with the specifications listed below:• ETS 301-489 -1&-17 General EMC requirements for Radio equipment.• ETS 300-328 Technical requirements for Radio equipment.• EN60950 Safety Requirements for Radio equipment

WLAN USB Dongle User’s Guide4Table of Contents1 Introduction ........................................................................................................................ 52 Wireless LAN basics .......................................................................................................... 63 Installation .......................................................................................................................... 73.1 Install Wireless LAN USB Dongle under Windows 98 ..................................... 93.2 Install Wireless LAN USB Dongle under Windows ME ................................. 183.3 Install Wireless LAN USB Dongle under Windows 2000 ............................... 233.4 Install Wireless LAN USB Dongle under Windows XP .................................. 304 Configuration Utility ........................................................................................................ 42Configuration Utility under Windows 98/ME/2K/XP ..................................... 425 Technical Specifications of WLAN USB Dongle ............................................................ 496 Troubleshooting................................................................................................................ 507 Glossary............................................................................................................................ 52

WLAN USB Dongle User’s Guide51 IntroductionThank you for purchasing Wireless Local Area Network (WLAN) USBDongle. You are about to install a networking system that is not only fastand powerful, but also easy to set up and simple to maintain. In a short timeyou and those in your network will be able to share a local printer and files,access the Internet, and roam about the office wire-freely.Using radio frequency (RF) technology, WLAN devices transmit and receivedata over the air, minimizing the need for wired connections. Thus, WLANscombine data connectivity with user mobility, and, through simplifiedconfiguration, enable movable LANs.This wireless networking solution has been designed for both large andsmall businesses, and it is scalable so that you can easily add more usersand new network features as your business grows.This user’s guide will assist you in installing the WLAN USB Dongle.

WLAN USB Dongle User’s Guide62 Wireless LAN basicsWireless LAN network defined by IEEE 802.11b standard committee could beconfigured as:•••• Peer-to-Peer wireless LAN,or•••• Access Point wireless LAN.Peer-to-Peer network is a group of notebooks with wireless LAN USB Dongles,called a BSS (Basic Service Set). These notebooks use their wireless LAN USBDongles to communicate with each other directly.Figure 2-1 Peer-to- Peerwireless networkThe most obviousdifferentiation betweenAccess Point wireless network and Peer-to-Peer wireless network is that thenotebooks in Access Point wireless network can make use of the resource in theInternet through Access Point.STA 3STA 1STA 2Access PointInternetFigure 2-2 Access Point wireless networkTo set up your notebook’s network as the type of “Peer-to-Peer” or “AccessPoint” wireless network depends completely on your requirement. Generally, if yournetwork environment has an Access Point, it’s recommend that you set it as “AccessPoint” mode to connect to the Internet.STA 1STA 2STA 3

WLAN USB Dongle User’s Guide73 InstallationThis section describes the procedures for installing the Wireless LAN USB Dongleunder Windows 98, ME, 2000, and XP operating systems.Before You StartBefore installation, please check your system in advance and ensure it meets theminimum requirements as described below.- Processor: Intel Celeron / Pentium II /Pentium III / Pentium IV; AMD Duron / Athlon- Operating System: Microsoft Windows 98 / ME / 2000 / XP/ Linux- System memory: 32MB at least- Hard Drive Free Space: 5MBNote:To prevent potential problems during installation, please use the auto-runinstallation tool on the CD to finish the driver installation before you plug theWLAN USB Dongle into the computer.To use the WLAN USB Dongle with a computing device, the device must be equippedwith an available USB port. All drivers and supporting software for the WLAN USBDongle must be installed and configured. Ask your system administrator for the following information, which you may needduring driver installation:• Your Wireless LAN SSID.• Your computer’s unique client name and workgroup name• For your network account, your user name and password.• Your IP address, gateway address, and subnet mask, if you’re not using a DHCPserver.Every computer on a network is identified by a unique network address. There are twomethods to assign network addresses to computers on a TCP/IP network:• Static IP addressing• Dynamic IP addressing (DHCP)In networks with static IP addressing, the network administrator manually assigns anIP address to each computer. Once a static IP address is assigned, a computer usesthe same IP address every time it reboots and logs on to the network. You maymanually change the IP address in the Network Properties dialog box. Networksusing static IP addresses are easy to set up and do not require additional network

WLAN USB Dongle User’s Guide8management software.In networks with dynamic IP addressing, a DHCP server in the network dynamicallyassigns IP addresses to all clients every time they log on to the network. Networkusing dynamic IP addresses require setting up and running a DHCP Server.Installation MenuAfter you insert the Installation/Documentation CD, the installation menu will appear.Note: If the auto-run installation menu window doesn’t appear automatically,you can utilize the Windows Explorer to browse CD content and run install.exemanually.You can find four buttons in this menu:1. Win2000 Driver : The auto-run installation application will detect theOperating System you are using automatically. Please select this button toinstall the USB Driver and follow the instructions as the next sections.2. CD Browser : Select this button to browse the contents of thisInstallation/Documentation CD.3. User’s Guide : To read the user’s guide (in pdf format).If you don’t haveAcrobat program , please download it at first or you can press this button tolink the website of the Acrobat to download it.4. Exit : To exit the auto-run application.When you move the mouse on the buttons or pictures of Intersil or Prism, theauto-run installation menu window will show some information to help you gettingsome data about these icons. If you’d like to use the Linux operating system, pleaserefer to the readme.txt file in the Linux driver package, which is in the Linux sub-folderunder the Driver folder in the Installation/Documentation CD.

WLAN USB Dongle User’s Guide93.1 Install Wireless LAN USB Dongle under Windows 98Step 1. Insert the Installation/Documentation CD, and the installation menu willappear. If the auto-run installation menu window doesn’t appear automatically, youcan utilize the Windows Explorer to browse CD content and run install.exe manually.You can choose Win98 Driver to install the driver. It opens the InstallShield Wizard dialog box as shown below. Click NEXT to continue.

WLAN USB Dongle User’s Guide10Step 2. Software License Agreement, click Yes to accept. Step 3. Start copying files.

WLAN USB Dongle User’s Guide11 Step 4. Click Finish to complete Setup and then the PC will restart. Step 5. After the computer restarts, just plug the USB cable into the USB port of yourPC. Windows 98 will automatically detect the USB Dongle, briefly opens aNew Hardware Found window, and starts collecting information for a driverinformation database. When Windows 98 is ready to configure the newhardware, it opens the Add New Hardware Wizard dialog box as shownbelow. Click Next to continue.

WLAN USB Dongle User’s Guide12Step6. A dialog box appears asking what do you want Windows to do. Select Searchfor the best driver for your device (Recommended) and click Next.Step 7. Choose the Specify a location. Press the Browse.. button. Then selectthe C:→→→→WINDOWS→→→→INF. Then press OK button.

WLAN USB Dongle User’s Guide13

WLAN USB Dongle User’s Guide14Step 8. After the hardware wizard finds the installation files in the windows, itdisplays the search results:” Windows driver file search for the device:“11Mbps Wireless LAN USB Dongle”. Click Next to copy the required files.Step 9. Starting Copy.

WLAN USB Dongle User’s Guide15Step 10. The Add New Hardware Wizard window appears stating that Windowshas finished installing the software that your new hardware device requires.Click Finish.Step 11. The System Settings Change window states:” To finish setting up your newhardware, you must restart your computer. Do you want to restart yourcomputer now?” Remove the software CD and click Yes to restart thecomputer.

WLAN USB Dongle User’s Guide16Step 12. After the computer restarts, double click the My Computer icon on yourdesktop. In My Computer window, double click the Control Panel icon.In Control Panel window, double click the Network icon.Step 13. Select the TCP/IP->11Mbps Wireless LAN USB Dongle for setting the IPaddress. Click Properties.

WLAN USB Dongle User’s Guide17Step 14. Set IP address and Subnet Mask. You can select either Static or Dynamic setting. If you use the static IP setup, please enter the IP address and Subnet mask. You should ask your network administrator for an address, and then type it into the blank boxes as below. Then click OK to return to Step 13 Network dialog box. Then click OK button to set thevalue. Static Setting ExampleDynamic Setting Example

WLAN USB Dongle User’s Guide183.2 Install Wireless LAN USB Dongle under Windows MEStep 1. Insert the Installation/Documentation CD, and the installation menu willappear. If the auto-run installation menu window doesn’t appear automatically, youcan utilize the Windows Explorer to browse CD content and run install.exe manually.You can choose WinME Driver to install the driver. It opens the InstallShield Wizard dialog box as shown below. Click NEXT to continue.

WLAN USB Dongle User’s Guide19Step 2. Software License Agreement, click Ye s to accept.Setup Status window will pop up.

WLAN USB Dongle User’s Guide20Step 3. Click Finish to complete Setup.Step 4. After the computer restarts, just plug the USB cable into the USB port of your PC.Windows ME will automatically detect the USB Dongle, and opens a New HardwareFound window. Then select YES to restart the computer.

WLAN USB Dongle User’s Guide21Step 5. After the computer restarts, double click the My Computer icon on yourdesktop. In My Computer window, double click the Control Panel icon. InControl Panel window, double click the Network icon.Step 6. Select the TCP/IP->11Mbps Wireless USB Dongle for setting the IP address.Click Properties.

WLAN USB Dongle User’s Guide22Step 7. Set IP address and Subnet Mask. You can select either Static or Dynamicsetting. If you use the static IP setup then please enter the IP address andSubnet masking. You should ask your network administrator for an address,and then type it into the blank boxes as below. Then click OK to return toStep 6 Network dialog box. Then click OK button to set the value.Static Setting Example Dynamic Setting Example

WLAN USB Dongle User’s Guide233.3 Install Wireless LAN USB Dongle under Windows 2000Step 1. Insert the Installation/Documentation CD, and the installation menu willappear. If the auto-run installation menu window doesn’t appear automatically, youcan utilize the Windows Explorer to browse CD content and run install.exe manually.You can choose Win2000 Driver to install the driver. It opens the InstallShield Wizard dialog box as shown below. Click NEXT to continue.

WLAN USB Dongle User’s Guide24Step 2. Software License Agreement, click Ye s to accept.Setup Status window will pop up.

WLAN USB Dongle User’s Guide25Step 3. Click Finish to complete Setup.Step 4. After the computer restarts, just plug the USB cable into the USB port of your PC.Windows 2000 will automatically detect the USB Dongle, opens a New HardwareFound window for a while.Click Yes in the Digital Signature dialog box.

WLAN USB Dongle User’s Guide26Step 5. Then click Start menu and select Settings. Choose the Control Panel.Double click the Network and Dial-up Connections icon in the ControlPanel.Step 6. Click the local area connection icon.

WLAN USB Dongle User’s Guide27Step 7. Double click Properties to configuration network protocol.Step 8. Select Internet Protocol (TCP/IP) and click Properties

WLAN USB Dongle User’s Guide28Step 9. Set IP address and Subnet Mask. You can select either Static or DHCPsettings. If you use the static IP setup, please enter the IP address andsubnet mask. You should ask your network administrator for an address,and then type it into the blank boxes as below. Then click OK to return tostep 8. Local Area Connection Properties dialog box. Then click OK buttonto set the value.Static setting example

WLAN USB Dongle User’s Guide29Dynamic setting example

WLAN USB Dongle User’s Guide303.4 Install Wireless LAN USB Dongle under Windows XPStep 1. Insert the Installation/Documentation CD, and the installation menu willappear. If the auto-run installation menu window doesn’t appear automatically, youcan utilize the Windows Explorer to browse CD content and run install.exe manually.You can choose WinXP Driver to install the driver. It opens the InstallShield Wizard dialog box as shown below. Click NEXT to continue.

WLAN USB Dongle User’s Guide31Step 2. Software License Agreement, click Ye s to accept.Setup Status window will pop up.

WLAN USB Dongle User’s Guide33Starting to search the driver automatically.Step 5. Click Continue Anyway.Step 6. The Found New Hardware Wizard window appears stating that Windows hasfinished installing the software that your new hardware device requires. ClickFinish.

WLAN USB Dongle User’s Guide34 Step 7. After the computer restarts, the Network Setup Wizard appears. ClickNext.Step 8. Make sure that your computer connects to the internet, then click Next.

WLAN USB Dongle User’s Guide35Step 9. If communication to and from the Internet to all the computers on your network are sent through this computer , you can choose This computer connects directly to the Internet. If this computer is part of a home or small office network that connects to the Internet through another computer on the network or using a residential gateway, you can choose This computer connects to the Internet through another computer on my network or through a residential gateway or other. In this case, choose This computer connects to the Internet through another computer on my network or through a residential gateway.Step 10. A computer name identifies your computer on the network. Some Internet service providers(ISPs) require that you use a specific computer name.Check with your ISP to see if they require a specific computer name. Thecomputer description is a short explanation of the computer. Type the

WLAN USB Dongle User’s Guide36computer name and computer description then click Next.Step 11. Type the Workgroup name then click Next.Step 12. Click Next.

WLAN USB Dongle User’s Guide37Then wait a few minutes.Step 13. Select the Just finish the wizard and click Next.Step 14. Click Finish.

WLAN USB Dongle User’s Guide38Step 15. Restart the computer.Step 16. After the computer restarts, click Start menu and select Control Panel.Double click the Network Connections icon in the Control Panel.

WLAN USB Dongle User’s Guide39Step 17. Double click the 11Mbps Wireless LAN USB Dongle local areaconnection icon.Step 18. Double click Properties to configuration network protocol.

WLAN USB Dongle User’s Guide40Step 19. Select Internet Protocol (TCP/IP) and click PropertiesStep 20. Set IP address and Subnet Mask. You can select either Static or DHCPsetting. If you use the static IP setup then please enter the IP address andSubnet masking. You should ask your network administrator for an address,and then type it into the blank boxes as below. Then click OK to return to Step27. Then click OK button to set the value.

WLAN USB Dongle User’s Guide41Static setting exampleDynamic setting example

WLAN USB Dongle User’s Guide424 Configuration UtilityConfiguration Utility under Windows 98/ME/2K/XPWLAN USB Dongle uses its own management software. All functions controlled byusers are provided by this application. When you insert the WLAN USB Dongle intothe USB Dongle slot, a new icon, , should appear in the WindowsSystem Tray automatically. If the icon is in red, it means that WLAN USB Dongleconfiguration is invalid or incomplete.Double click that icon and the configuration window will pop up as shown below.User can navigate through “tabs” by clicking or tapping them with a stylus.Status TabStateThe field shows the association state to available Access Point with BSSID--MAC address of the Access Point. When the state is “Associated” , it meansnormal operation in infrastructure mode and the USB Dongle is connected tothe Access Point.Disable RadioThe USB Dongle’s RF radio function can be disabled by clicking this DisableRadio button.Rescan

WLAN USB Dongle User’s Guide43When the Rescan button is clicked, the USB Dongle will restart the process offinding an Access point. Tx/Rx Rate Information This displays the instantaneous wireless Receive and Transmit throughput inbytes per second. These values are updated every two seconds. Link Quality / Signal Strength The Link Quality and Signal Strength bar graph is only active when the nodeis in Infrastructure Mode. The bar graph displays the quality and strength ofthe link between the node and its Access Point. A label summarizes thequality of the Link over the bar graph, which can take on one of the followingvalues:“Not Applicable”“Poor”“Fair”“Good”“Excellent” The driver will start looking for a better Access Point if the Link Qualitybecomes “Poor”. Link Quality is a measurement of receiving and transmittingerrors over the radio.Configuration TabThe Configuration Tab contains several fields where operating parameters ofthe driver can be viewed or changed. Changes to any of the parameters inthis panel can be applied to the driver without a need to restart the computer.

WLAN USB Dongle User’s Guide45want to use.Peer-to-Peer ChannelWhen you choose Peer-to-Peer as the Network Type, you have to set thechannel number you want to use.Transmit RateThe transmission rate at which client of AP transmits the data packets. Youcan set this to Auto 1 or 2Mb, 5.5Mb, 11Mb or Fully Automatic.“OK” buttonThis button becomes active only when one of the fields has been modified.Pressing this button applies the changed values to the driver and saves themto the registry and is used the next time the computer boots upEncryption Tab You may want an additional measure of security on your wireless network,which can be achieved by using WEP (Wired Equivalent Privacy) encryption.WEP encrypts each frame transmitted from the radio using one of the Keysentered in this panel. When an encrypted frame is received it will only be accepted if it decryptscorrectly. This will only happen if the receiver has the same WEP Key usedby the transmitter. To be written to the driver and registry, each key must consist of hex digits,which means that only digit 0-9 and letter A-F are valid entries.You can set this to disable, 64 bits or 128 bits. Encryption WEP – DisabledThe default is Disabled .

WLAN USB Dongle User’s Guide46Enter Passphrase to Generate Keys Automatically– 64 bit/128bit You can type a string that you can remember easily in the blank and the WEPKeys will be generated automatically. There are two options: 64 bit and 128bit. You can choose any WEP Key from Key 1 to Key 4.

WLAN USB Dongle User’s Guide47 Create Keys Manually–64bit/128bit When you want to entering Keys Manually, there are four fields can be usedand user can choose to use Alphanumeric or Hexadecimal. InAlphanumeric, you can type the keys between A-Z and numbers arbitrarily.But in the Hexadecimal, you must type the Hexadecimal symbols. In 64 bit,the Alphanumeric has 5 characters and the Hexadecimal has 10 digits. And inthe 128 bit, the Alphanumeric has 13 characters and the Hexadecimal has 26digits. You can choose any WEP Key from Key 1 to Key 4.

WLAN USB Dongle User’s Guide48Apply

WLAN USB Dongle User’s Guide49This button updates the driver with the four keys displayed in Key field.The keys are also written to the registry for permanent storage.About Tab About Tab shows the product version including the detail of Driver,Configuration Utility, and NIC firmware version. Users must use this versionnumber when reporting their problems for technical support.

WLAN USB Dongle User’s Guide505 Technical Specifications of WLAN USB DongleProduct Name WLAN USB DongleStandard IEEE802.11bFrequency Band 2.400GHz ~ 2.4835GHz unlicensed ISM bandSpread Spectrum DSSS (Direct Sequence Spread Spectrum)Modulation method DQPSK/DBPSK/CCKData Rate 1Mbps, 2Mbps, 5.5Mbps, 11MbpsOperation mode Peer-to-PeerAccess Point (need Access Points)Antenna External patch antennaRF Output Power 8 dBmReceive Sensitivity Operating at 11Mbps: Better than 10^-5 BER @ –80dBmOperating Range Up to 300 m, depending on surrounding environmentSecurity 64-bit or 128-bit WEP (Wired Equivalent Privacy)Operating systemsupportedWindows 98, Windows ME, Windows 2000, Windows XP,LinuxManagement Windows-based utility for configuration and statusmonitoringRegulation FCC part 15 for North AmericaCE/ETSI for EuropeanI/O Interface USB portLED ACTIVE(ACT) , POWER(PWR)Dimension 90(L) x 75(W) x 15(H) mmWeight 43 g (approximate)Input Power 5V DCOperating Temperature 0 ~ 50℃ (operation)Storage Temperature -20 ~ 70℃Humidity 5 ~ 90% (non-condensing)

WLAN USB Dongle User’s Guide516 TroubleshootingSymptom:The Power(PWR) LED or Active(ACT) LED is off.Possible Remedy:Make sure the USB Dongle is inserted properly. Otherwise contact your vendor.Symptom:The Active(ACT) LED is always on not blinking.Possible Remedy:Make sure that you have installed the driver from attached CD. Otherwise contactyour vendor.Symptom:The Active(ACT) LED is blinking but the USB Dongle icon does not appear in youricon tray.Possible Remedy:Make sure that you have installed the Utility from attached CD.Symptom:The USB Dongle icon is red.Possible Remedy:It means there is no wireless link.1. Make sure there is any 802.11b device in the servicing area.2. Double click the icon to pop up the configuration windowa. Make sure they are sharing the same SSID and channel. If the SSID is same,you could press the Status tab →→→→ Re-Scan to scan the channel to link.b. Make sure they are operating under same authentication type. WEP functionhas to be enabled, if Shared Key Authentication is the selection, and thesecret Keys have to be same in the communicating group.3. Make sure there is no metal objects, electron devices or cordless phone in thevicinity.

WLAN USB Dongle User’s Guide52Symptom:The USB Dongle icon is green, but can’t access wired-LANPossible Remedy:1. Make sure there is any 802.11b AP in your LAN.2. Make sure the USB Dongle is configured as infrastructure mode.3. Make sure the Network setting is proper. You could check and modify through MyComputer →→→→ Control Panel →→→→ Network →→→→ TCP/IP / NetBEUI →→→→ PRISM2 IEEE802.11 USB Dongle Adaptor →→→→ Content.Symptom:The USB Dongle icon is green, but can’t share files with others.Possible Remedy:Make sure the file and printer sharing function is enabled. You could enable thefunction by checking the icon of My Computer →→→→ Control Panel →→→→ Network →→→→ fileand printer sharing →→→→ I want to be able to give others to access to my files.Symptom:Slow or erratic performancePossible Remedy:Try change the channel of the communicating group or move your device closer to thecommunicating device.

WLAN USB Dongle User’s Guide537 GlossaryIEEE 802.11 StandardThe IEEE 802.11 Wireless LAN standards subcommittee, which is formulating astandard for the industry.Access PointAn integrated wireless and wired LAN is called an Access Point configuration. AccessPoint is applicable to enterprise scale for wireless access to central database, orwireless application for mobile workers.BSSIDA specific Peer-to-Peer LAN is called a Basic Service Set (BSS). Computers in a BSSmust be configured with the same BSSID.DHCPDynamic Host Configuration Protocol - a method in which IP addresses are assignedby server dynamically to clients on the network. DHCP is used for Dynamic IPAddressing and requires a dedicated DHCP server on the network.Direct Sequence Spread SpectrumThis is the method the wireless cards use to transmit data over the frequencyspectrum. The other method is frequency hopping. Direct sequence spreads the dataover one frequency range (channel) while frequency hopping jumps from one narrowfrequency band to another many times per second.ESSIDAn Infrastructure configuration could also support roaming capability for mobileworkers. More than one BSS can be configured as an Extended Service Set (ESS).Users within an ESS could roam freely between BSSs while served as a continuousconnection to the network wireless stations and Access Points within an ESS must beconfigured with the same ESSID and the same radio channel.EthernetEthernet is a 10/100Mbps network that runs over dedicated home/office wiring. Usersmust be wired to the network at all times to gain access.GatewayA gateway is a hardware and software device that connects two dissimilar systems,such as a LAN and a mainframe. In Internet terminology, a gateway is another name

WLAN USB Dongle User’s Guide54for a router. Generally a gateway is used as a funnel for all traffic to the Internet.IEEEInstitute of Electrical and Electronics EngineersISM BandThe FCC and their counterparts outside of the U.S. have set aside bandwidth forunlicensed use in the so-called 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-speedwireless capabilities in the hands of users around the globe.Local Area Network (LAN)A LAN is a group of computers, each equipped with the appropriate network adaptercard connected by cable/air, that share applications, data, and peripherals. Allconnections are made via cable or wireless media, but a LAN does not use telephoneservices. It typically spans a single building or campus.NetworkA network is a system of computers that is connected. Data, files, and messages canbe transmitted over this network. Networks may be local or wide area networks.PCMCIAPersonal Computer Memory Card International Association. Also a PCMCIA card isalso referred to USB Dongle.Peer-to-PeerAn Peer-to-Peer wireless LAN is a group of computers, each with a WLAN adapter,connected as an independent wireless LAN. Peer-to-Peer wireless LAN is applicableat a departmental scale for a branch or SOHO operation.ProtocolA protocol is a standardized set of rules that specify how a conversation is to takeplace, including the format, timing, sequencing and/ or error checking.RoamingIn an infrastructure network, this is when a wireless PC moves out of range of thepreviously connected access point and connects to a newly connected access point.Throughout the network environment where access point are deployed, PCs canalways be connected regardless of where they are located or roam.

WLAN USB Dongle User’s Guide55SSIDA Network ID unique to a network. Only clients and Access Points that share the sameSSID are able to communicate with each other. This string is case-sensitive.Simple Network Management Protocol (SNMP)Simple Network Management Protocol is the network management protocol of TCP/IP.In SNMP, agents-which can be hardware as well as software-monitor the activity in thevarious devices on the network and report to the network console workstation. Controlinformation about each device is maintained in a structure known as a managementinformation block.Static IP AddressingA method of assigning IP addresses to clients on the network. In networks with StaticIP address, the network administrator manually assigns an IP address to eachcomputer. Once a Static IP address is assigned, a computer uses the same IPaddress every time it reboots and logs on to the network, unless it is manuallychanged.Transmission Control Protocol / Internet Protocol (TCP/IP)TCP/IP is the protocol suite developed by the Advanced Research Projects Agency(ARPA). It is widely used in corporate Internet works, because of its superior designfor WANs. TCP governs how packet is sequenced for transmission the network. Theterm “TCP/IP” is often used generically to refer to the entire suite of related protocols.Transmit / ReceiveThe wireless throughput in Bytes per second averaged over two seconds.USBThe Universal Serial Bus allows complete Plug and Play connection of peripheraldevices to a computer.WEP“Wired Equivalent Privacy” is based on the use of 64-bit keys and the popular RC4encryption algorithm. Wireless devices without a valid WEP key will be excluded fromnetwork traffic.Wide Area Network (WAN)A WAN consists of multiple LANs that are tied together via telephone services and / orfiber optic cabling. WANs may span a city, a state, a country, or even the world.

WLAN USB Dongle User’s Guide56Wireless LAN (WLAN)A wireless LAN does not use cable to transmit signals, but rather uses radio orinfrared to transmit packets through the air. Radio Frequency (RF) and infrared are thecommonly used types of wireless transmission. Most wireless LANs use spreadspectrum technology. It offers limited bandwidth, usually under 11Mbps, and usersshare the bandwidth with other devices in the spectrum; however, users can operate aspread spectrum device without licensing from the Federal CommunicationsCommission (FCC)

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