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Metro Ethernet by Sam Halabi

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Appendix A. SONET/SDH Basic Framing and Concatenation

This appendix discusses the following topics:

This appendix explains basic SONET/SDH framing and concatenation. With the emergence of L2 metro services, SONET/SDH metro networks are being challenged to offer cost-effective and bandwidth-efficient solutions for transporting data services. The following sections describe the different elements of a SONET/SDH frame and how the elements can be combined to form bigger SONET/SDH pipes.

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