ExamCramNetPlus_Part19.pdf

ExamCramNetPlus_Part19.pdf - 182 CHAPTER 6 Installation and...

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182 CHAPTER 6: Installation and Configuration Synchronous Digital Hierarchy (SDH) is the European counterpart to SONET. Optical carrier (OCx) levels represent the range of digital signals that can be carried on SONET fiber-optic networks. Each OCx level defines the speed at which it operates. Note When you take the exam, equate SDH with SONET. ExamAlert A passive optical network (PON) is one in which unpowered optical splitters are used to split the fiber so it can service a number of different locations and brings the fiber either to the curb, the building, or the home. It is known as a passive system because there is no power to the components and consists of an optical line termination (OLT) at the split and a number of optical network units (ONUs) at the end of each run (typically near the end user). It can be combined with wavelength division multiplexing and is then known as WDM-PON. A form of multiplexing optical signals is dense wavelength-division multiplexing (DWDM). This method
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  • Spring '19
  • Synchronous optical networking, Wavelength-division multiplexing

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