{"version":"1.0","type":"link","title":"Synchronous optical networking - Newikis","description":"Synchronous Optical Networking (SONET) and Synchronous Digital Hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diodes (LEDs). At low transmission rates, data can also be…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://upload.wikimedia.org/wikipedia/commons/4/4c/SDH_Racks.jpg","thumbnail_width":384,"thumbnail_height":656}