(SONET) A broadband networking standard based on point-to-point optical fibre networks. SONET will provide a high-bandwidth “pipe” to support ATM-based services.
The SONET standard will establish a digital hierarchical network with a consistent worldwide transport scheme. SONET has been designed to take advantage of fibre, in contrast to the plain old telephone system which was designed for copper wires.
SONET carries circuit-switched data in frames at speeds in multiples of 51.84 megabits per second (Mbps) up to 48 * 51.84 Mbps = 2.488 gigabits per second. Since SONET uses multiple channels to transmit data, each SONET frame can be considered to be a two-dimensional table of bytes that is 9 rows high and 90 columns deep. For every OC-n level, SONET can transmit n number of frames at a given time. Groups of frames are called superframes.
SONET is the American version of SDH.
[Wulf Losee; Corporate Computing 8.92; STACKS; LAN Magazine 10.93].
- Synchronous orbit
noun 1. (astronautics) an orbit in which the orbital period of a satellite is identical to the spin period of the central body synchronous orbit An orbit of a satellite around a rotating body, such that one orbit is completed in the time it takes for the body to make one revolution on its own […]
noun, Astronomy. 1. rotation of a satellite in which the period of rotation is equal to the period of orbit around its primary, leaving the same face always pointing toward the primary: The moon is in synchronous rotation about the earth. synchronous rotation The rotation of an orbiting body on its axis in the same […]
noun, Electricity. 1. the speed at which an alternating-current machine must operate to generate electromotive force at a given frequency.
noun, plural synchronies. 1. simultaneous occurrence; synchronism. 2. Linguistics. a synchronic approach to language study. noun 1. the state of being synchronous; simultaneity