What is cell exchange

Cell switching, also known as ATM (Asynchronous Transfer Mode), is a connection-oriented fast packet switching technology, which transmits data by establishing virtual circuits.

ATDM cell transmission uses asynchronous time division multiplexing (Asynchronous Time Division Multioles), also known as Statistic Multiptx. The information source generates information randomly, because the arrival of cells in the queue is also random. High-speed business cells come very frequently and concentratedly, while low-speed business cells come very sparsely. These cells are queued in the queue in order, and then multiplexed onto the transmission line in the order of output. The cell with the same mark does not correspond to a fixed time gap on the transmission line, nor does it appear in cycles. There is no relationship between the information and its position in the time domain. The information is only distinguished by the mark in the header. . In the synchronous time division multiplexing mode (such as PCM multiplexing mode), the information is distinguished by its time position (time slot) in a frame. A time slot corresponds to a channel, and no additional information header is needed to indicate the information. identity of.