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Seminar - An Overview of Communications Technologies


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Module 5 - SONET, WDM, DWDM and B-ISDN Technologies                                                             Slide 27 of 76 _________________                                                                                  __________

                     Convergence of North American and European Hierarchies

              SONET / SDH Hierarchy
SONET Bit Rate SDH
STS-1/OC-1 51.84 M bps           -
STS-3/OC-3 155.52 M bps STM-1
STS-12/OC-12 622.08 M bps STM-4
STS-24/OC-24 1244.16 M bps STM-8
STS-48/OC-48 2488.32 M bps STM-16
STS-192/OC-192 9953.28 M bps STM-64

                                                                                                   

North American and European optical line speeds meet at Synchronous Transport Module (STM) - 1.