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  • 1. Chapter 20 SONET/SDH
  • 2. Figure 20-1 A SONET System
  • 3. Figure 20-2 An Example of a SONET Network
  • 4. Figure 20-3 SONET Layers
  • 5. Figure 20-4 Device-Layer Relationship in SONET
  • 6. Figure 20-5 Data Encapsulation in SONET
  • 7. Figure 20-6 STS-1 Frame
  • 8. Figure 20-7 STS-1 Frame Overhead
  • 9. Figure 20-8 STS-1 Frame Section Overhead
  • 10. Figure 20-9 STS-1 Frame Line Overhead
  • 11. Figure 20-10 Payload Pointers
  • 12. Figure 20-11 STS-1 Frame Path Overhead
  • 13. Figure 20-12 Virtual Tributaries
  • 14. Figure 20-13 VT Types
  • 15. Figure 20-14 STS-n
  • 16. Figure 20-15 STS Multiplexing
  • 17. Figure 20-16 ATM in an STS-3 Envelope