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Author: WikiMatrix

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English[en]
Synchronous Optical Networking (SONET) and Synchronous Digital Hierarchy (SDH) have evolved as the most commonly used protocols for optical networks.
Korean[ko]
동기식 광통신망(Synchronous optical networking, SONET)과 동기 디지털 계층(Synchronous Digital Hierarchy, SDH)은 광통신망을 위해 매우 흔히 사용되는 프로토콜로 진화했다.

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