词条 | Standardized digital transmission rates for the synchronous digital hierarchy (SDH), the synchronous optical network (SONET), and the optical carrier (OC) hierarchy |
释义 | Standardized digital transmission rates for the synchronous digital hierarchy (SDH), the synchronous optical network (SONET), and the optical carrier (OC) hierarchy Table Standardized digital transmission rates for the synchronous digital hierarchy (SDH), the synchronous optical network (SONET), and the optical carrier (OC) hierarchy* SDH system SONET system OC level transmission rate in megabits per second (Mbps) or gigabits per second (Gbps) maximum voice channels per circuit STS-1 OC-1 51.84 Mbps 783 STM-1 STS-3 OC-3 155.52 Mbps 2,349 STM-4 STS-12 OC-12 622.08 Mbps 9,396 OC-24 1,244.16 Mbps 18,792 STM-16 STS-48 OC-48 2.4888 Gbps 37,584 *SDH is the transmission hierarchy established by the International Telegraph and Telephone Consultative Committee (CCITT); SONET and OC are transmission hierarchies established by the American National Standards Institute (ANSI). See as table: ![]() |
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