{"version":"1.0","type":"link","title":"STM-4 - Newikis","description":"The STM-4 (Synchronous Transport Module level-4) is a transmission rate defined within the Synchronous Digital Hierarchy (SDH), a set of optical network standards specified by the International Telecommunication Union Telecommunication Standardization Sector (ITU-T). The SDH frame structure and…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}