22 Sep
Posted by jj as Network
First generation wireless systems, which primarily provide analog voice service, are widely in use worldwide. Second generation systems support digital voice/data traffic; some of these systems are already deployed or undergoing deployment. Third generation wireless networks will ultimately carry multimedia traffic that are characterized by combination of different informaion streams of diverse nature (e.g., voice, video, image, data). Some of the salient features of multimedia applications are high speed and changing bit rates (periodic and bursty arrivals), several virtual connections over the same access, synchronization of different information streams, and various service/deliveIy requirements (QoS).
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Peer-to-Peer programming (P2P) has in recent years become a widely explored research area. With the evolution of wireless technology such as mobile phones, the idea to bring these two technologies together gives a new dimension to P2P communication, collaboration and resource sharing.
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There’s a new trend in wireless telecommunications, Internet: Internet connectivity via handheld devices. More people are buying wireless handheld devices such as cellular phones, pagers, personal digital assistants (PDAs), and they demand access to onlineresources at any timefromany location. Over thepast few years a tremendous number of wireless devices different in their characteristics appeared on market. Developments of web application for these devices become challenging experience due to the following reasons [1]:
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Basics Bluetooth Security Attacks via Bluetooth - Introduction BlueSnarf BlueSnarf++ BlueBug BlueJacking HeloMoto BlueSmack Cracking the Bluetooth PIN Conclusion Bluetooth Basics Originally invented 1994 by Ericsson Technology for connections of short range devices Bluetooth operates within license-free ISM band (2.4 – 2.48 GHz) To prevent interferences: frequency hopping base band frequency switched 1600 times / s ISM band devided into 79 freq. levels, 1 MHz distance Connect two devices: pairing Piconet
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19 Apr
Posted by jj as Network
Overview Additional Documentation Application Examples Protocol Support Serial RS232 Interface -USB Interface Power Supply Ethernet Interface LEDs Product CD Technical Specifications Quick Start Required Information Hardware Address IP Address WLAN Settings Installing and Configuring the Wi232 Making a Wireless Connection Configuration Using Web-Manager Network Configuration Automatic IP Address Configuration Static IP Address Configuration Server Configuration Serial Tunnel Hostlist Configuration Channel 1
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Capabilities Applications Protocol Support Configuration Methods Addresses and Port Numbers Hardware Address IP Address Port Numbers 3: Using DeviceInstaller Accessing WiPort using DeviceInstaller Viewing the WiPort’s Current Configuration 4: Configuration Using Web-Manager Accessing WiPort Web-Manager using Device Installer Network Configuration Network Mode Configuration Automatic IP Address Configuration Static IP Address Configuration Server Configuration Host List Configuration Channel 1 and Channel 2 Configuration Serial Settings Connection Settings - TCP Connection Settings - UDP Email Configuration Trigger Configuration WLAN Configuration Configurable Pin Settings Updating Settings Applying Defaults
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When the concept of a network without wires was first suggested more than two decades ago, it sparked the imagination of scientists, product vendors, and users around the globe eager for the convenience and flexibility of a free roaming conection. Unfortunately, as the variety of wireless solutions began to emerge, anticipation turned to disappointment.The first wave of solutions proved inadequate for the networking, portability, and security needs of a changing IT environment. While this has largely continued to be the case throughout the 1990s with most cell-based and office local area network (LAN)-based wireless technology deployments, great strides have been made specifically over the last two years to address the fundamental concerns impeding the full acceptance of wireless net- working in the mainstream of corporate IT departments and the small office.
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Wireless VoIP Phone is a next generation intelligent communication. device, adds Voice-over-IP (VoIP) communications with wireless installations
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