Optical Carrier Bandwidth, SONET/SDH/Optical Carrier Facts and Optical Carrier Providers

The two protocols below are standardized by the following:

  • Synchronous Digital Hierarchy or the acronym SDH is the standard defined by the ETSI or the European Telecommunications Standards Institute
  • Synchronous Optical Networking or SONET for short is the standard defined by T1.105 from American National Standards Institute and GR-253-CORE from Telcordia.


  • SONET (Synchronous Optical Networking)/SDH (Synchronous Digital Hierarchy) Data Rates
    SONET/SDH Chart and Bandwidths
    SONET Optical Carrier Level SONET Frame Format SDH level and Frame Format Payload Bandwidth Kbps (kilo bits per second) Line Rate Kbps (kilo bits per second)
    OC-1 STS-1 STM-0 50,112 51,840
    OC-3 STS-3 STM-1 150,336 155,520
    OC-12 STS-12 STM-4 601,344 622,080
    OC-24 STS-24 1,202,688 1,244,160
    OC-48 STS-48 STM-16 2,405,376 2,488,320
    OC-192 STS-192 STM-64 9,621,504 9,953,280
    OC-768 STS-768 STM-256 38,486,016 39,813,120
    OC-3072 STS-3072 STM-1024 153,944,064 159,252,240



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