Operation Manual
Table Of Contents
- Title
- Contents
- Introduction
- Important notes
- Preparing the notebook for use
- Working with the notebook
- Security functions
- Connecting external devices
- System Configuration Utility
- Troubleshooting and tips
- You have forgotten your User and/or Admin password
- Installing new software
- Restoring the hard disk contents under Windows
- The notebook's date or time is incorrect
- The LCD screen of the notebook remains blank
- The LCD display panel is difficult to read
- The external monitor stays blank
- The external monitor is blank or the image is unstable (only under Windows)
- The notebook cannot be started
- The notebook stops working
- The mouse does not work
- The floppy disk cannot be written
- The printer does not print
- Acoustic warnings
- Memory expansion
- Technical data
- Index
Working with the notebook
A26391-K126-Z120-1-7619 41
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 98 Second Edition, Windows Millennium, Windows 2000 and Windows XP operating
system
PC card slots
Two PC card slots (CardBus or PCMCIA) enable the notebook to operate two type I or type II PC
cards or one type III PC card.
!
Make sure that foreign objects do not fall into the PC card slot.