IntelliGrid Architecture
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Asynchronous Transfer Mode (ATM)URL: Asynchronous Transfer Mode (ATM) is a means of digital communications that is capable of very high speeds (currently up to 40 Gbps using SONET/OC-768). It is used for the transport of voice, video, data, and images. ATM is an ITU-T standard for cell relay. Information is conveyed in small, fixed-size cells. ATM is the world's most widely deployed backbone technology. ATM has been widely adopted because of its flexibility in supporting the broadest array of technologies, including DSL, IP Ethernet, Frame Relay, SONET/SDH and wireless platforms. ATM can be used both for WANs and LANs. ATM itself consists of a series of layers. The first layer - known as the Application Adaptation Layer (AAL) - holds the bulk of the transmission. This 48-byte payload divides the data into different types. The ATM layer contains five bytes of additional information, referred to as overhead. This section directs the transmission. Lastly, the physical layer attaches the electrical elements and network interfaces. Keywords: Physical Layer, WAN
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IntelliGrid Architecture
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