Synchronous Optical Network The Framework That Powers Global Digital Connectivity SONET Architecture and Protocols At the core of SONET is its ability to transport digital signals using synchronous transport signals called Synchronous Transport Signals or STS. It uses time-division multiplexing to enable transmission of multiple digital signals through a single fiber. The basic building block is the Low Order SONET or STS-1 signal with a transmission speed of 51.84 Mbps....
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