| What is SDH? |
|
| Background |
| Synchronisation of Digital Signals |
| SDH Advantages |
| Plesiochronous Digital Hierarchy (PDH) |
| Limitations of PDH Network |
| Basic SDH Signal |
| Transmission Hierarchies |
|
| Synchronous versus Asynchronous |
| Synchronisation Hierarchy |
| Synchronising SDH |
| Evolution of Timing and Synchronisation |
|
| Virtual Container |
|
| Regenerator Section Overhead |
Multiplex Section Overhead |
| Higher-Order Path Overhead (VC-4/VC-3) |
| Lower-Order Path Overhead (VC-2/VC-1) |
|
| Definitions |
| SDH Error Performance Monitoring |
|
| Payload Pointers |
| Positive Pointer Justification |
| Negative Pointer Justification |
|
|
| Tributary Unit Group |
| TU Multiframe |
| TU Payload Pointer |
|
| Multiplex Section Protection, K1/K2 Bytes |
| 1+1 Protection |
| 1¦N Protection |
|
| Terminal Multiplexer |
| Regenerator |
| Add/Drop Multiplexer |
| Wideband Digital Cross-connect |
| Broadband Digital Cross-connect |
| Flexible Multiplexer |
|
| Point-to-Point |
| Point-to-Multipoint |
| Mesh Architecture |
| Ring Architecture |
|
| Pointers, MUX/DEMUX |
| Reduced Back-to-Back Multiplexing |
| Optical Interconnect |
| Multi-point Configurations |
| Grooming |
| Enhanced OAM |
| Enhanced Performance Monitoring |
| Convergence, ATM, Video, and SDH |
|
| SONET and SDH Hierarchies |
| Further Information |
|
|
| ITU-T |
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