Digital Network Speeds

    DSx   : Digital Signal
    T-x   : carrier type (i.e. physical pipe and protocol)
    OC-x  : Optical Carrier
    SONET : Synchronous Optical NETwork

    Signal  Carrier  DS0's     Speed     Notes
    ======  =======  =====  ===========  =============================
     DS0      n/a       1      64Kbit/s
     DS1      T-1      24     1.5Mbit/s  
     DS2      T-2      96     6.3Mbit/s   4 x DS1
     DS3      T-3     672    44.7Mbit/s  28 x DS1

    Carrier   SONET      Data Rate
    =======  ========  =============
    OC-1     STS-1        51.8Mbit/s
    OC-3     STS-3       155.5Mbit/s
    OC-9     STS-9       466.6Mbit/s
    OC-12    STS-12      622.1Mbit/s
    OC-18    STS-18      933.1Mbit/s
    OC-24    STS-24       1.24Gbit/s
    OC-36    STS-36       1.87Gbit/s
    OC-48    STS-48       2.49Gbit/s
    OC-192   STS-192        10Gbit/s
    OC-768   STS-768        40Gbit/s 
    OC-1072  STS-1072      160Gbit/s