User manual SONY VAIO VGN-S1XP

[. . . ] N Hardware Guide VGN-S series nN 1 Read this first Read this first Notice © 2004 Sony Corporation. This manual and the software described herein, in whole or in part, may not be reproduced, translated, or reduced to any machine-readable form without prior written approval. Sony Corporation provides no warranty with regard to this manual, the software, or other information contained herein and hereby expressly disclaims any implied warranties or merchantability or fitness for any particular purpose with regard to this manual, the software or such other information. In no event shall Sony Corporation be liable for any incidental, consequential, or special damages, whether based on tort, contract, or otherwise, arising out of or in connection with this manual, the software, or other information contained herein or the use thereof. [. . . ] Try to move your notebook or try to place the two devices closer. I cannot communicate with the other device although the distance between both devices is within 10 metres The data transfer distance can be shorter than 10 metres depending on existing obstacles between the two devices, on radio wave quality, on the operating system or the software used. Try to move your notebook or to place both devices closer. nN 48 Using your VAIO computer If the device with which you want to communicate is already communicating with another Bluetooth device, it may not be found or it may not be able to communicate with your notebook. Check that the Bluetooth function of the device with which you want to communicate is on. See the other device's manual for more details. nN 49 Using your VAIO computer Using Wireless LAN (WLAN) Thanks to Sony's Wireless LAN (WLAN), all your digital devices with built-in WLAN functionality communicate freely with each other through a powerful network. A WLAN is a network in which a mobile user can connect to a local area network (LAN) through a wireless (radio) connection. So there is no need anymore to pull cables or wires through walls and ceilings. The Sony WLAN supports all normal Ethernet activities, but with the added benefits of mobility and roaming. You can still access information, internet/intranet and network resources, even in the middle of a meeting, or as you move from one place to another. You can communicate without an Access Point, this means that you can communicate between a limited number of computers (ad-hoc), or you can communicate through an Access Point, which allows you to create a full infrastructure network (infrastructure). In some countries, using WLAN products may be restricted by the local regulations (e. g. Therefore, before activating the WLAN functionality, read the Wireless LAN Regulation leaflet carefully. Channel selection is explained further in this manual (see Wireless LAN channel selection (page 56)). WLAN uses the IEEE 802. 11b/g standard, which specifies the used technology. The standard includes the encryption method: Wired Equivalent Privacy (WEP), which is a security protocol and Wi-Fi Protected Access (WPA - Proposed jointly by the IEEE and Wi-Fi Alliance, Wi-Fi Protected Access is a specification of standards based, interoperable security enhancements that increase the level of data protection and access control for existing Wi-Fi networks. WPA has been designed to be forward compatible with the IEEE 802. 11i specification. It utilizes the enhanced data encryption TKIP (Temporal Key Integrity Protocol) in addition to user authentication using 802. 1X and EAP (Extensible Authentication Protocol)). Data encryption protects the vulnerable wireless link between clients and Access Points. Besides that, there are other typical LAN security mechanisms to ensure privacy, such as: password protection, end-to-end encryption, virtual private networks, and authentication. Wireless LAN devices using the IEEE 802. 11a standard and the ones using the IEEE 802. 11b or g standard cannot communicate because the frequencies are different. Wireless LAN devices using the IEEE 802. 11g standard can only communicate with a device using the IEEE 802. 11b standard, not with the IEEE 802. 11a standard. IEEE 802. 11b: The standard speed is 11 Mbps, or about 30 to 100 times faster than a standard dial up. IEEE 802. 11g: The standard speed is 54 Mbps, or about 5 times faster than a Wireless LAN device using the IEEE 802. 11b standard (you will only achieve this speed when working exclusively on 802. 11g mode and not in a mixed b/g mode). nN 50 Using your VAIO computer Communicating without Access Point (ad-hoc) An ad-hoc network is a network in which a local network is created only by the wireless devices themselves, with no other central controller or Access Point. Each device communicates directly with other devices in the network. [. . . ] It may create a traffic hazard and is illegal in some areas. It can also be potentially dangerous to play loud music while walking, especially at pedestrian crossings. Preventing hearing damage ­ Avoid using headphones at high volume. Hearing experts advise against continuous, loud and extended play. [. . . ]