Chapter 1. Introduction to Optical Networking
This chapter includes the following sections:
Introduction to SONET/SDH— This section introduces Synchronous Optical Network (SONET) and the Synchronous Digital Hierarchy (SDH), which form the backbone of many service provider, carrier, and large enterprise networks. SONET/SDH is used as a Layer 1.5 time-division multiplexed (TDM) transport mechanism for voice and data. This section also offers an insight into and brief history of the evolution of SONET/SDH.
SONET/SDH— This section discusses SONET/SDH topologies and compares legacy SONET/SDH equipment with next-generation multiservice provisioning platforms. Various SONET/SDH terminology used throughout this book is also discussed including packet ...
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