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 SYNCHRONOUS OPTICAL NETWORK Definition
We define SYNCHRONOUS OPTICAL NETWORK |
SYNCHRONOUS OPTICAL NETWORK - A fiber optic network in a ring topology, often used to carry voice signals or Internet traffic. One ring is described as hot, or carrying data. The other ring is the protect--or standby--ring that transmits data in the opposite direction in case of service degradation or a fiber cut. Typically, within 50 milliseconds of a failure SONET equipment on the edge of the failing segment attempts to construct a new ring using a combination of standby fiber and hot fiber--if any of it is working. |
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