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Synchronous Optical Network
A
high-speed (up to 2.5 Gbps) synchronous network specification developed by
Bellcore and designed to run on optical fiber. Synchronous Transport Signal
level 1 (STS-1) is the basic building block of SONET. Approved as an
international standard in 1988. See also SDH, STS-1, and
STS-3c.
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