Broadcom BRCM1005-H 802.11g MINI PCI Card build in Laptops User Manual WLAN Guide PP2160

Broadcom Corporation 802.11g MINI PCI Card build in Laptops WLAN Guide PP2160

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WLAN Guide PP2160

User GuideCompaq Integrated Wireless LAN 54g Network Adapter-Quick StartDocument Part Number: xxxxxx-xxxFebruary 2003-DraftReview Copy

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Page ii User GuideWireless Interoperability ........................................................................................................................16Safety ....................................................................................................................................................16Regulatory Information ..............................................................................................................................16Canada—Industry Canada (IC) .............................................................................................................16Europe—EU Declaration of Conformity.................................................................................................17France ...................................................................................................................................................17Guidelines for Public WLAN Experimentation ................................................................................18Metropolitan Departments ..............................................................................................................19USA—Federal Communications Commission (FCC) ............................................................................20Interference Statement...................................................................................................................21Radio Approvals ....................................................................................................................................21Troubleshooting................................................................................................................ 22Cannot Connect to the Network ................................................................................................................22Performance and Connectivity Problems ................................................................................................22Glossary............................................................................................................................. 24Review Copy

IntroductionPage 2 User GuideHOME USERSThe AP (access point) that communicates with the Integrated 54g enabled notebook has a preassignednetwork name (SSID) that the notebook recognizes upon startup. To enable WEP, use any string of numbersfor the WEP key. USING THE INTEGRATED 54g ENABLED NOTEBOOK The Integrated 54g enabled notebook is an IEEE 802.11g based wireless LAN device. A LAN is composedof two or more computers that are connected to each other to share files or common equipment such as aprinter or an Internet connection. A wireless LAN provides the same functionality of a wired network, but iteliminates the need to install networking cables and other networking equipment. Not only is a wireless LANeasier to deploy, but it also allows for roaming. For example, when using the Integrated 54g enablednotebook, it is possible to roam from one room in the house to another, or from a conference room to an officewithout being disconnected from the network.FEATURES AND REQUIREMENTSThe Integrated 54g solution is an IEEE 802.11 based wireless LAN that includes the following features:• Support for IEEE 802.11g draft specification• Support for IEEE 802.11b standard• 2.4-GHz band operation• Network data rate of up to 54 Mbit/s• Wired Equivalent Privacy (WEP) encryptionThe following items are needed for participating in a wireless LAN:•Integrated 54g enabled notebook computer running on a Microsoft Windows XP operating system• Software drivers, software reference guide, and Help fileThe Integrated 54g enabled notebook works with any IEEE 802.11b Wi-Fi CERTIFIED or IEEE 802.11gaccess point or wireless client network adapter.Review Copy

User Guide Page 3Completing the SetupNOTE—Before starting, obtain the required network information from the network administrator or the wirelessaccess point installer (see “The Integrated 54g Solution” on page 1).MODES OF OPERATIONA wireless LAN can be configured for two different modes of operation: infrastructure mode and ad hoc mode(an ad hoc network is also known as a peer-to-peer network or a computer-to-computer network). Whereaseach mode has its advantages, one mode may be more appropriate than the other, depending on the locationand type of network connection.INFRASTRUCTURE MODEThe key difference between the infrastructure type of network and an ad hoc network is that the infrastructurenetwork includes a base station (host) computer that has a built-in wireless network adapter and is connectedto a wireless access point (AP). This functionality allows computers on the infrastructure wireless LAN toaccess the resources and tools of the wired LAN, including Internet access, e-mail, file sharing, and printersharing.CharacteristicsNetworked computers communicate with each other through a dedicated AP. All data transmitted between thecomputers on this wireless LAN passes through the AP. Advantages•Extended range. The access point extends the range of the wireless LAN. Each computer cancommunicate with other computers equipped by wireless networks that are within the range of the accesspoint.•Roaming. As the user moves around the home or office, the Integrated 54g enabled notebookdetermines the best access point to use to ensure continuous communication with the network.•Network connectivity. An access point can provide wireless LAN access to an existing wired network bybridging the two networks together. This gives users of the wireless LAN access to all the functions of awired network—from file server access to access to e-mail and the Internet.Disadvantages Because the infrastructure mode offers more features, it requires additional components and setup time todeploy. Requirements • A base station computer having a wired connection to the Internet• A wireless network adapter• A connection to an AP (access point)Review Copy

Completing the SetupPage 6 User Guide7The default settings in Microsoft Windows XP Service Pack 1 require IEEE 802.1x authentication. With IEEE802.1x authentication enabled, connecting to a network requires a connection with an authentication server. Ifthe network has no authentication server, the connection is disabled every 3 minutes. Therefore, whenconnecting to a network that has no authentication server, disable IEEE 802.1x authentication by doing thefollowing (if the network does have an authentication server, ignore this step):• Click the Authentication tab.• Clear the Enable network access control using IEEE 802.1x check box.8Click OK. The network name and icon appear at the top of the list under Preferred networks.9Click OK to activate the network connection. To verify that the network connection has been made, reopenWireless Network Connection Properties for that wireless network and click the Wireless Networks tab.The computer is connected to the selected network when a blue bubble appears on top of the icon for thatnetwork. If the bubble does not appear, click Refresh. If it still does not appear, try to access a Web page toverify that an Internet connection exists. Review Copy

Completing the SetupPage 8 User Guide7Select the Data encryption (WEP enabled) check box.8Clear the The key is provided for me automatically check box.9Type the network key in the Network key box and again in the Confirm network key box. NOTE—It is not necessary to select the Key format or the Key length before typing the network key. Thesesettings automatically change to the appropriate setting as the network key is typed.10 The default settings in Microsoft Windows XP Service Pack 1 require IEEE 802.1x authentication. With IEEE802.1x authentication enabled, connecting to a network requires a connection with an authentication server. Ifthe network has no authentication server, the connection is disabled every 3 minutes. Therefore, whenconnecting to a network that has no authentication server, disable IEEE 802.1x authentication by doing thefollowing (if the network does have an authentication server, ignore this step): • Click the Authentication tab.• Clear the Enable network access control using IEEE 802.1x check box.11 Click OK. The network name and icon appear at the top of the list under Preferred networks.12 Click OK to activate the network connection. To verify that the network connection has been made, reopenWireless Network Connection Properties for that wireless network and click the Wireless Networks tab.The computer is connected to the selected network when a blue bubble appears on top of the icon for thatnetwork. If the bubble does not appear, click Refresh. If it still does not appear, try to access a Web page toverify that an Internet connection exists. Review Copy

Completing the SetupPage 10 User Guide7Type the network name in the Network name (SSID) box.8The default settings in Microsoft Windows XP Service Pack 1 require IEEE 802.1x authentication. With IEEE802.1x authentication enabled, connecting to a network requires a connection with an authentication server. Ifthe network has no authentication server, the connection is disabled every 3 minutes. Therefore, whenconnecting to a network that has no authentication server, disable IEEE 802.1x authentication by doing thefollowing (if the network does have an authentication server, ignore this step): • Click the Authentication tab.• Clear the Enable network access control using IEEE 802.1x check box.9Click OK. The network name and icon appear at the top of the list under Preferred networks.Review Copy

Completing the SetupPage 12 User Guide7Type the network name in the Network name (SSID) box.8Select the Data encryption (WEP enabled) check box.9Clear the The key is provided for me automatically check box.10 Type the network key in the Network key box and again in the Confirm network key box. NOTE—It is not necessary to select the Key format or the Key length before typing the network key. Thesesettings automatically change to the appropriate setting as the network key is typed.11 The default settings in Microsoft Windows XP Service Pack 1 require IEEE 802.1x authentication. With IEEE802.1x authentication enabled, connecting to a network requires a connection with an authentication server. Ifthe network has no authentication server, the connection is disabled every 3 minutes. Therefore, whenconnecting to a network that has no authentication server, disable IEEE 802.1x authentication by doing thefollowing (if the network does have an authentication server, ignore this step):• Click the Authentication tab.• Clear the Enable network access control using IEEE 802.1x check box.12 Click OK. The network name and icon appear at the top of the list under Preferred networks. Review Copy

User Guide Page 1313 Click OK to activate the network connection. To verify that the network connection has been made, reopenWireless Network Connection Properties for that wireless network and click the Wireless Networks tab.The computer is connected to the selected network when a blue bubble appears on top of the icon for thatnetwork. If the bubble does not appear, click Refresh. If it still does not appear, try to access a Web page toverify that an Internet connection exists.Review Copy

SpecificationsPage 14 User GuideSpecificationsPHYSICAL CHARACTERISTICSTEMPERATURE AND HUMIDITY LIMITATIONSPOWER CHARACTERISTICSNETWORKING CHARACTERISTICSCharacteristic DescriptionForm Factor Mini PCI specification, May 2002. Type IIIA form factorDimensions (length, width) 59.6 mm × 50.95 mmCondition DescriptionOperating Temperature 0 to 70°COperating Humidity 95% maximum (no condensation allowed)Storage Temperature –40 to 90°CStorage Humidity 95% maximum (no condensation allowed)CharacteristicValuesIEEE 802.11g Operation IEEE 802.11b OperationDoze Mode 40 mA 40 mAReceive Mode 400 mA 220 mATransmit Mode 600 mA 330 mAPower Supply 3.3 V 3.3 VCharacteristic DescriptionCompatibility IEEE Std 802.11b and IEEE Draft Std 802.11g for wireless LANNetwork Operating System Microsoft Windows NetworkingHost Operating System Microsoft Windows XPMedium Access Protocol CSMA/CA (collision avoidance) with acknowledgment (ACK)Data Rate (Mbit/s)aa The Integrated 54g solution uses an automated rate select mechanism• IEEE Draft Std 802.11g: 1, 2, 5.5, 6, 11, 12, 18, 24, 36, 48, 54• IEEE Std 802.11b: 1, 2, 5.5, 11Review Copy

SpecificationsUser Guide Page 15RADIO CHARACTERISTICSCharacteristicaa See "Regulatory Information" on page 16 for country-specific performance characteristics and use restrictions.DescriptionFrequency Band 2.4 GHz (IEEE 802.11b, IEEE Draft Std 802.11g)Modulation Technique Direct sequence spread spectrum (DSSS)• CCK for high and medium transmit rate• DQPSK for standard transmit rate• DBPSK for low transmit rateOrthogonal frequency division multiplexing (OFDM)• 52 subcarriers with BPSK, QPSK, 16-QAM or 64-QAM• Forward error correction convolutional coding rate: 1/2, 2/3, 3/4Spreading 11-chip Barker sequenceBit Error Rate (BER) Better than 10–5 ppmNominal Output Power • IEEE Std 802.11b: 14 dBm• IEEE Draft Std 802.11g: 15 dBmReview Copy

Regulatory InformationPage 16 User GuideRegulatory InformationOPERATIONAL INFORMATIONWIRELESS INTEROPERABILITYThe Integrated 54g enabled notebook is designed to be interoperable with any wireless LAN product that isbased on direct sequence spread spectrum (DSSS) and orthogonal frequency division multiplexing (OFDM)radio technology and to comply with the following standards:• IEEE Std 802.11b-1999. Standard on 2.4 GHz Wireless LAN• IEEE Std 802.11g-2002. Draft standard on 2.4 GHz Wireless LANSAFETYThe Integrated 54g enabled notebook, like other radio devices, emits radio frequency electromagnetic energy.The level of energy emitted by this devices, however, is less than the electromagnetic energy emitted by otherwireless devices such as mobile phones. The Integrated 54g enabled notebook operates within the guidelinesfound in radio frequency safety standards and recommendations. These standards and recommendationsreflect the consensus of the scientific community and result from deliberations of panels and committees ofscientists who continually review and interpret the extensive research literature. In some situations orenvironments, the use of a Integrated 54g enabled notebook may be restricted by the proprietor of the buildingor responsible representatives of the applicable organization. Examples of such situations include thefollowing:• Using the Integrated 54g enabled notebook onboard airplanes, or• Using the Integrated 54g enabled notebook in any other environment where the risk of interference withother devices or services is perceived or identified as being harmful.If uncertain of the policy that applies to the use of wireless devices in a specific organization or environment(in an airplane, for example), ask for authorization to use the Integrated 54g enabled notebook before turningit on.REGULATORY INFORMATIONThe Integrated 54g enabled notebook must be used in strict accordance with this manual. For country-specificapprovals, see “Radio Approvals” on page 21. The computer manufacturer is not responsible for any radio ortelevision interference caused by unauthorized modification of the devices included with this Integrated 54genabled notebook kit, or the substitution or attachment of connecting cables and equipment other than thatspecified by the computer manufacturer. The correction of interference caused by such unauthorizedmodification, substitution, or attachment is the responsibility of the user. The computer manufacturer and itsauthorized resellers or distributors are not liable for any damage or violation of government regulations thatmay arise from the user's failing to comply with these guidelines.CANADA—INDUSTRY CANADA (IC)This device complies with RSS210 of Industry Canada.Review Copy

Regulatory InformationUser Guide Page 17EUROPE—EU DECLARATION OF CONFORMITYThis equipment complies with the essential requirements of the European Union directive 1999/5/EC.Cet équipement est conforme aux principales caractéristiques définies dans la Directive européenne RTTE1999/5/CE.Die Geräte erfüllen die grundlegenden Anforderungen der RTTE-Richtlinie 1999/5/EG.Questa apparecchiatura è conforme ai requisiti essenziali della Direttiva Europea R&TTE 1999/5/CE.Este equipo cumple los requisitos principales de la Directiva 1999/5/CE de la UE, "Equipos de Terminales deRadio y Telecomunicaciones".Este equipamento cumpre os requisitos essenciais da Directiva 1999/5/CE do Parlamento Europeu e doConselho (Directiva RTT).O exoplismos autos plhroi tis basikes apaits ths koinotikhs odhgias EU R&TTE 1999/5/E.Deze apparatuur voldoet aan de noodzakelijke vereisten van EU-richtlijn betreffende radioapparatuur entelecommunicatie-eindapparatuur 1999/5/EG.Dette udstyr opfylder de Væsentlige krav i EU's direktiv 1999/5/EC om Radio- og teleterminaludstyr.Dette utstyret er i overensstemmelse med hovedkravene i R&TTE-direktivet (1999/5/EC) fra EU.Utrustningen uppfyller kraven för EU-direktivet 1999/5/EC om ansluten teleutrustning och ömsesidigterkännande av utrustningens överensstämmelse (R&TTE).Tämä laite vastaa EU:n radio- ja telepäätelaitedirektiivin (EU R&TTE Directive 1999/5/EC) vaatimuksia.This product is intended to be used in all countries of the European Economic Area when operating in IEEE802.11b and/or IEEE 802.11g mode at 2.4 GHz (see “France” below).FRANCESome areas of France have a restricted frequency band for operation in the IEEE 802.11b mode and the IEEE802.11g mode at 2.4 GHz. The following information describes this restriction. Please check ART's Web site(http://www.art-telecom.fr) for more up-to-date information.Autorité de régulation des télecommunications (ART) has made decisions that will allow users to install WLAN(wireless LAN) systems to provide high-speed Internet services primarily in high-traffic areas (called hot spots).ART recently released guidelines that establish the conditions for experimenting with the installation of publicWLANs, such as for high-speed Internet access in locations that are currently being poorly served by existingnetworks. Such public WLANs would operate in the 2.4-GHz frequency band. This series of measures answersmany of the concerns expressed during Art's public consultation on this topic.Review Copy

Regulatory InformationPage 18 User GuideDecisions allowing the installation of wireless terminals in hot spots (train stations, airports, business centers,and the like): In agreement with the Ministry of Defense, ART has made two decisions setting the conditionsfor using wireless LANs in the 2.4-GHz band. One of these decisions has been submitted to the Minister ofTelecommunications for approval. These decisions will allow the installation of WLAN access points to providepublic services in high-traffic public places. This will allow service providers and licensed operators to installaccess points using 2.4 GHz band technologies without authorization, under the following technical conditions:• In 38 départements (see “Metropolitan Departments” on page 19 for listing):• The 2400–2454 MHz band can be used both indoors and outdoors using systems (access points anddevices) with less than 300 milliwatts (mW) of power.• The 2454–2483.5 MHz band can be used indoors using devices with less than 100 mW of power andcan be used outdoors using devices with less than 10 mW of power. When the devices are being usedoutdoors on private property, the power may be increased to 100 mW after approval from the Ministryof Defense.• For the time being, in all other metropolitan départements, the conditions remain unchanged. The list ofthe first 38 départements will be progressively added to after 1 January 2003. • For the overseas départements (DOM), as well as Saint Pierre and Miquelon and Mayotte, the entire2400–2483.5 MHz band may be used indoors and outdoors using devices with less than 100 mW ofpower, except for the Reunion Islands and Guyana, where the 2420–2483.5 MHz band may be used onlyoutdoors using devices with less than 100 mW of power. ART reminds operators that these frequenciesare used with no guarantee of nondisruption, and that the installations must respect all measures applyingto radio installations (such as urban planning regulations). These decisions also allow the development ofprivate uses. In particular, private networks (such as indoor corporate networks) can be established usingthese technologies.These conditions are tabulated in Table 2 on page 20.Guidelines for Public WLAN Experimentation• Networks using WLAN technology will be granted a free authorization for up to 18 months under articleL.33-1 of the Post and Telecommunications Code. These networks may use systems with 100 mW ofpower (effective isotropic radiated power (EIRP)) on the entire band, indoors and outdoors. Moreover, inthe 2.4 GHz band (and providing this power limit is respected), fixed point-to-point links can beestablished for these networks needs, or frequencies can be requested in other ad hoc bands. • Private and public persons may submit applications to ART, provided that legislation and regulations allowthem to do so.• Applications will be processed in a simplified way, in the spirit of the new "Authorization" Directive.• ART will send completed applications to the Ministry of Defense. The Ministry will then check that theprojects are not located near any sensitive area and that they are not likely to cause disruptions to militaryequipment. For each application, ART will then submit its report and the draft authorization to the Ministerof Telecommunications.• Applications can be sent from 12 November 2002 so that the first experiments may be launched as soonas early 2003. Full reviews are to be sent to ART at the end of the temporary authorizations to determinewhether the technology guarantees quality and security to users. Review Copy

Regulatory InformationUser Guide Page 19Metropolitan DepartmentsTable 1 lists the 38 metropolitan départements that permit the use of WLAN systems using less than 100 mWof power (EIRP) indoors across the entire 2400–2483.5 MHz band and outdoors on the 2400–2454 MHz band.Conditions of use for WLANs in hot spots in these 38 départements: • The 2400–2454 MHz band may be used both indoors and outdoors using devices with power (EIRP) ofless than 100 milliwatts (mW).• The 2454–2483.5 MHz band may be used indoors using devices with power (EIRP) of less than 100 mWand outdoors using devices with power of less than 10 mW. On private property outdoors, the power maybe 100 mW with the approval of the Ministry of Defense. Conditions of use for WLANs in hot spots in other metropolitan départements: The conditions of use currentlyremain unchanged, that is, • The 2400–2446.5 MHz band may be used indoors using devices with power (EIRP) of less than 10 mW.Table 1: 38 Metropolitan Départements01 Ain Orientales 36 Indre 66 Pyrénées02 Aisne 37 Indre et Loire 67 Bas Rhin03 Allier 41 Loir et Cher 68 Haut Rhin05 Hautes Alpes 42 Loire 70 Haute Saône08 Ardennes 45 Loiret 71 Saône et Loire09 Ariège 50 Manche 75 Paris11 Aude 55 Meuse 82 Rarn et Garonne12 Aveyron 58 Nièvre 84 Vaucluse16 Charente 59 Nord 88 Vosges24 Dordogne 60 Cise 89 Yonne25 Doubs 61 Orne 90 Territoire de Belfort26 Drôme 63 Puy du Dôme 94 Val de Marne32 Gers 64 Pyrénées AtlantiqueReview Copy

Regulatory InformationPage 20 User Guide• The 2446.5–2483.5 MHz band may be used indoors using devices with power (EIRP) of less than 100mW. On private property outdoors, the power may be 100 mW with the approval of the Ministry ofDefense.NOTE—The Integrated 54g enabled notebook transmits less than 100 mW of power, but more than 10 mW.USA—FEDERAL COMMUNICATIONS COMMISSION (FCC)ThIs device complies with Part 15 of the FCC Rules. Operation of the device is subject to the following twoconditions:• The device may not cause harmful interference.• The device must accept any interference that may cause undesired operation.NOTE—The radiated output power of the Integrated 54g enabled notebook is far below the FCC radiofrequency exposure limits. Nevertheless, the Integrated 54g enabled notebook should be used in such aTable 2: Authorized EIRPIn the 38 DépartementsFrequency (MHz)Authorized EIRP (mW)Indoors Outdoors: Decisionsaa Concernent les réseaux indépendants et les hot spotsOutdoors: Guidelinesbb Concernent les éxperimentations de réseaux ouverts au public2400 100 100 1002454248305 10 and 100 on private property with Ministry of Defense approval100 with Ministry of Defense approvalIn Other Metropolitan DépartementsFrequency (MHz)Authorized EIRP (mW)Indoors Outdoors: Decisions*Outdoors: Guidelines**2400 10 Not permitted 100 with Ministry of Defense approval2454248305 100 100 on private property with Ministry of Defense approvalIn Guadeloupe, Martinique, St. Pierre, and Miquelon and MayotteFrequency (MHz)Authorized EIRP (mW)Indoors Outdoors: Decisions and Guidelines2400 100 1002483.5In Reunion Islands and GuyanaFrequency (MHz)Authorized EIRP (mW)Indoors Outdoors: Decisions*Outdoors: Guidelines**100 Not permitted 100 with Ministry of Defense approval100 100Review Copy

Regulatory InformationUser Guide Page 21manner that the potential for human contact during normal operation is minimized. To avoid the possibility ofexceeding the FCC radio frequency exposure limits, keep a distance of at least 20 cm between the user (orany other person in the vicinity) and the antenna that is built into the computer. To determine the location ofthe antenna within the notebook, refer to the operating manual for the Integrated 54g enable notebook.Interference StatementThis equipment has been tested and found to comply with the limits for a Class B digital device, pursuant toPart 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmfulinterference in a residential installation. This equipment generates, uses, and can radiate radio frequencyenergy. If the equipment is not installed and used in accordance with the instructions, the equipment maycause harmful interference to radio communications. There is no guarantee, however, that such interferencewill not occur in a particular installation. If this equipment does cause harmful interference to radio or televisionreception (which can be determined by turning the equipment off and on), the user is encouraged to try tocorrect the interference by taking one or more of the following measures:• Reorient or relocate the receiving antenna.• Increase the distance between the equipment and the receiver.• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.• Consult the dealer or an experienced radio/TV technician for help.NOTE—This Integrated 54g enabled notebook must be used in strict accordance with the computermanufacturer's instructions. Any other installation or use violates FCC Part 15 regulations. Modifications notexpressly approved by the computer manufacturer could void the user's authority to operate the equipment.RADIO APPROVALSOnly use this radio device in countries where the device is approved for use.Review Copy

TroubleshootingPage 22 User GuideTroubleshootingCANNOT CONNECT TO THE NETWORKIf the Integrated 54g enabled notebook appears to be functioning properly but does not connect to thenetwork, the problem may be that there is a mismatch between the Network name (SSID) and Wirelessnetwork key (WEP) settings in Wireless Network Properties and the name and WEP key of the network itis trying to connect to. As explained in "Completing the Setup" on page 3, the network name and WEP key arecase sensitive. Verify that the spelling and case of these parameters are correct and that the settings areexactly the same on all computers on the network.If the spelling and case of these parameters are correct and the settings are exactly the same on all computerson the network, and the computer is still unable to connect to the network, see “Performance and ConnectivityProblems”. PERFORMANCE AND CONNECTIVITY PROBLEMSProblem or Symptom Possible SolutionThe computers seem to be communicating, but they do not appear in My Computer or in My Network Places.Verify that File and Printer Sharing is enabled on all the computers on the network.1 Click Start, then click Control Panel (Category View). 2 Click Network and Internet Connections. 3 Click Network Connections.4 Right-click Wireless Network Connections, then click Properties.5 On the General tab, under This connection uses the following items, verify that the File and Printer Sharing for Microsoft Networks check box is selected. If the check box is cleared, select it. If this item is not present, click Install. In the Select Network Component Type box, select Service and click Add. In the Select Network Service box, select File and Printer Sharing for Microsoft Networks and click OK. In Wireless Network Connection Properties, click OK.Data transfer is sometimes very slow.Microwave ovens and some cordless phones operate at the same radio frequency as the Integrated 54g enabled notebook. When the microwave oven or cordless phone is in use, it interferes with the operation of the wireless network. Therefore, keep the Integrated 54g enabled notebook at least 20 feet away from microwave ovens and any cordless telephone that operates at a frequency of 2.4 GHz.Data transfer is always very slow.Some homes and most offices are steel-framed structures. The steel in such buildings may interfere with the network's radio signals, thus causing a slowdown in the data transmission rate. Try moving the Integrated 54g enabled notebook to different locations in the building to see if performance improves.Computers are not communicating with the network.If the network has an access point (AP), check all of the cables and make sure the power LED on the front of the AP is green. Verify that all of the wireless network properties values are correct. Also, make sure the computer is receiving a good signal from the access point.The network was enabled, but now it is disabled.The default settings in Microsoft Windows XP Service Pack 1 require IEEE 802.1x authentication. With IEEE 802.1x authentication enabled, connecting to a network requires a connection with an authentication server. If the network has no authentication server, the connection is disabled every 3 minutes. Therefore, when connecting to a network that has no authentication server, disable IEEE 802.1x authentication by doing the following:1 Click Start, then click Control Panel (Category View).2 Click Network and Internet Connections.3 Click Network Connections.4 Right-click Wireless Network Connection, then click Properties.5 Click the Wireless Networks tab.6 Click the network name under Preferred networks, then click Properties.7 Click the Authentication tab.8 Clear the Network access control using IEEE 802.1x check box.9 Click OK.Review Copy

User Guide Page 23In the ad hoc mode, I am unable to communicate with another user on the same ad hoc network.By default, Windows XP uses a dynamic IP address in ad hoc mode. If you are not able to communicate with other users on the same ad hoc network, assigning a static IP address may correct the problem. Search the Windows Help Center for instructions on assigning a static IP address.Problem or Symptom Possible SolutionReview Copy

GlossaryPage 24 User GuideGlossaryaccess point A stand-alone wireless hub that allows any computer that has a wireless network adapter to communicate with another computer and to connect to the Internet.ad hoc network A communication configuration in which every computer has the same capabilities and any computer can initiate a communication session. Also known as a peer-to-peer network or a computer-to-computer network.available network One of the networks listed in the Available networks list under Wireless Network Connection Properties. Any wireless network that is broadcasting and is within receiving range of the Integrated 54g enabled notebook appears on the list.BER bit error rate. The ratio of errors to the total number of bits being sent in a data transmission from one location to another.client computer The computer that gets its Internet connection by sharing either the host computer's connection or the access point's connection.dBm Unit of expression of power level in decibels with reference to a power of 1 milliwatt.DBPSK differential-binary-phase-shift keying.DQSPK differential-quadrature-phase-shift keying. A compression technique that transmits only the differences between the values of the phase of the sine wave rather than the full absolute value.DSSS direct sequence spread spectrum. A type of radio transmission technology used in wireless networking and cellular communications.Dynamic Host Configuration Protocol (DHCP)A mechanism for allocating IP addresses dynamically so that addresses can be reused when hosts no longer need them.file and printer sharing A capability that allows a number of people to view, modify, and print the same file(s) from different computers.GHz gigahertz. A unit of frequency equal to 1 000 000 000 cycles per second.host computer The computer that is directly connected to the Internet via a modem or network adapter.IEEE Institute of Electrical and Electronics EngineeringIEEE 802.11g The IEEE draft standard for wireless LAN operations in the 2.4 GHz frequency band with a maximum data rate of 54 Mbit/s. This draft standard is expected to be finalized in the summer of 2003.IEEE 802.11b The IEEE standard for wireless LAN operations in the 2.4 GHz frequency band with a maximum data rate of 11 Mbit/s. Internet Protocol (IP) address The address of a computer that is attached to a network. Part of the address designates which network the computer is on, and the other part represents the host identification.LAN local area networkmmeterMbit/s megabits per second. Transmission speed of 1 000 000 bits per second.MHz megahertz. A unit of frequency equal to 1 000 000 cycles per second.ns nanosecond. 1 billionth (1/1 000 000 000) of a second.OFDM orthogonal frequency division multiplexing. An emerging signal modulation technology for achieving higher data rates in wireless communications.peer-to-peer network See ad hoc network. Also known as a computer-to-computer network.preferred network One of the networks that has been configured. Such networks appear under Preferred networks on the Wireless Networks tab of Wireless Network Connection Properties.Service Set Identifier (SSID) A value that controls access to a wireless network. The SSID for your wireless network card must match the SSID for any access point that you want to connect with. If the value does not match, you are not granted access to the network. You can have up to three SSIDs. Each SSID can be up to 32 characters long and is case-sensitive.Wired Equivalent Privacy (WEP)A form of data encryption. The WEP key information in the client computer must match the WEP key used by the access point or host computer. The WEP key can be enabled or disabled. The WEP key is case-sensitive.Review Copy

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© 2003 Hewlett-Packard CompanyMicrosoft and Windows are trademarks of Microsoft corporation in the U.S. and/or other countries. Intel is atrademark of Intel corporation in the U.S. and/or other countries.HP shall not be liable for technical or editorial errors or omissions contained herein or for incidental or consequentialdamages in connection with the furnishing, performance, or use of this material. The information in this documentis provided "as is" without warranty of any kind, including, but not limited to, the implied warranties ofmerchantability and fitness for a particular purpose, and is subject to change without notice. The warranties for HPproducts are set forth in the express limited warranty statements accompanying such products. Nothing hereinshould be construed as constituting an additional warranty.This document contains proprietary information that is protected by copyright. No part of this document may bephotocopied, reproduced, or translated to another language without the prior written consent of Hewlett-PackardCompany.User Guide54g Wireless LANFirst Edition February 2003Document Part Number: 330895-001Review Copy

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