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optical carrier
A series of
physical protocols (OC-1, OC-2, OC-3, and so on), defined for Synchronous
Optical Network (SONET) optical signal transmissions. OC signal levels put
Synchronous Transport Signal (STS) frames onto multimode fiber-optic line at a
variety of speeds. The base rate is 51.84 Mbps (OC-1). Each signal level
thereafter operates at a speed divisible by that number (thus, OC-3 runs at
155.52 Mbps). See also SONET, STS-1, and
STS-3c.
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