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Definition: statistical multiplexor

In communications and networking, a device that merges several low-speed channels into a single high-speed channel and vice versa. A standard multiplexor is set up to interleave a fixed number of incoming channels at the same rate onto the outgoing channel regardless of whether every incoming channel contains data. A statistical multiplexor analyzes the incoming traffic and dynamically changes the interleaving in order to use all the available capacity of the outgoing channel.