Fujitsu Siemens Computers C Series Operating system requirements, Adhoc mode, Infrastructure mode

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Working with the notebook

Adhoc mode

A wireless LAN in the adhoc mode, also called peer-to-peer mode, consists of a single closed cell. Adhoc wireless networks result when a workgroup comes together with its systems and would like to interconnect these for data exchange. Any number of systems can be added to this type of network and can leave it again.

So that several adhoc wireless networks do not interfere with each other in radio traffic, there is a unique network name, the SSID (Service Set Identifier). The SSID is used for addressing so that a data packet can always be assigned to a certain cell.

If you want to join an existing cell, you require the network name (SSID), which you enter in the settings for the network card. The driver searches for a wireless network with this ID during start-up. When the driver has found a wireless network, it connects to it and you can communicate with the systems in this wireless network. If two cells are very close together, the channels of these networks should be 4 to 5 channels apart.

Infrastructure mode

In the infrastructure mode, a base station, referred to as an AccessPoint, exists in addition to the mobile stations. In the infrastructure mode the AccessPoint assumes the function of a "guard". In contrast to the adhoc mode, each system must log on to the AccessPoint before it is allowed to exchange data in the cell.

Another task of the AccessPoint is the connection of the cells with a cable-connected Ethernet. As due to the logon requirement, the AccessPoint knows at all times exactly which stations are on the radio side, it can decide exactly which data must be sent to it and which don't. This process is also referred to as bridging.

The range of a wireless network can be increased with several AccessPoints. The AccessPoints have the same SSID for this purpose. When a system enters the wireless net, it searches among the reachable AccessPoints for the one with the strongest signal and logs on there. Two systems logged on to different AccessPoints communicate with each other in this way, even when they are not within direct radio reach. If a system also continuously monitors the radio situation after the logon, it can detect how the signals from an AccessPoint become weaker and those of another become stronger, and can then log on to the stronger one without the user noticing. This procedure is referred to as roaming.

Operating system requirements

Windows 2000 and Windows XP

A26391-K136-Z120-2-7619

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Contents Answers Are there Page Page Lifebook C Series Operating manualOctober 2003 edition Page Contents Contents Acoustic warnings Page Your Lifebook C Series Quotation marks Notational conventionsImportant notes Safety notesImportant notes Additional safety precautions for devices with wireless LANEnergy saving under Windows Energy savingStoring the battery Transporting the notebookBefore you travel Transporting the notebook Cleaning the notebookPage Energy Star Manufacturer’s notesCE marking Copyright-protected technologyRegulatory information for notebooks without radio device Regulatory noticesDOC Industry Canada Notices Avis Aux Utilisateurs Du Réseau Téléphonique Canadien UL Notice FCC Regulatory information for notebooks with radio deviceFor Authorized Repair Technicians Only Federal Communications Commission statementFCC Radio Frequency Exposure statement Regulatory Notes and StatementsRegulatory Information/Disclaimers Export restrictions Radio frequencies for devices with wireless LANFrequencies Channel No Europe France MHzDisposal and recycling Preparing the notebook for use Unpacking and checking the deliverySelecting a location Switching on the notebook for the first time Connecting the power adapterSwitch the notebook off during the self-test Page Working with the notebook Switching on the notebookSwitching the notebook off Interior view Ports, indicators and operating elementsLeft side panel FrontBack panel Right side panelPower indicator Power-on indicatorCharging indicator, battery Display fieldHard disk indicator Battery indicatorsOptical drive indicator PC card indicatorsKeyboard Fn key Key combinationsPause key Numeric keypadReducing the volume Switching the loudspeakers on/offIncreasing the volume Switching between internal and external screenApplication buttons Application/player buttonsButton Internet buttonPlayer buttons Touchpad and touchpad buttons Executing a commandMoving the pointer Selecting an itemDisplay settings LCD display panelInformation on LCD monitor Charging the battery BatteryAdjusting the speed of the mouse pointer Display on the LCD screen and an external monitorMonitoring the battery charging level Inserting and removing the batteryRemoving the battery Installing the battery Using the power-management featuresStandby mode Module Settings under WindowsOperating systems with Acpi Windows 2000 and Windows XP Windows XPRemoving module Optical drive Installing moduleHandling CD/DVDs Inserting or removing a CD/DVD Manual removal emergency removal Integrated 56k modemConnecting notebook modem to telephone connection Wireless network as per Ieee 802.11 standard Wireless LANAdhoc mode Infrastructure modeOperating system requirements Installing a PC card PC cardsWorking with PC cards Buttons until they snap Removing a PC card Loudspeakers Page Security functions Bios password protectionOverview of all security functions Kensington LockPassword protection for your hard disk Using Kensington LockBrief overview of the security functions Security function Type of protection PreparationConfiguring password protection in Bios Setup Protecting Bios Setup supervisor and user passwordSet the supervisor and user password Change supervisor or user password Password protection of operating systemCancelling passwords Activating system protectionPassword protection for hard disk Activating hard disk protectionDeactivating hard disk protection Page Connecting external devices Connecting devices to notebookDisconnecting devices from notebook Ports Connections on the left sidePorts on the front Connecting an external monitor Setting the refresh rate for your external monitorConnections on the rear Connecting an external PS/2 mouse Connecting an external keyboardUsing the parallel port Connecting USB devicesConnecting external audio devices Headphones portMicrophone jack Page Settings in Bios Setup Start Bios SetupOperating Bios Setup Exiting Bios Setup You have forgotten your user and/or supervisor password Troubleshooting and tipsInstalling new software Restoring the operating systemLCD screen of the notebook remains blank LCD screen is difficult to readExternal monitor stays blank Battery is dead Battery is not installed correctlyPower adapter is not connected correctly External monitor is blank or the image is unstablePrinter does not print Mouse does not workBeep sounds every few seconds Acoustic warningsPage Installing and removing the memory extension Memory expansionRemoving cover Removing memory modules Installing memory modulesMounting the cover Page Electrical data Technical dataLCD display panel GraphicsInput devices DimensionsSlots PortsPower adapter Page Index Index Index Audio devices External loudspeaker Index