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- In a communications system, the equipment that adapts or formats the signal for transmittal over the communication medium. Note 1: An example of a MAU is an optical transmitter, which accepts an electrical signal at its input port and converts it to an optical signal accessible at its output port. Note 2: Some prefer to limit the term medium access unit to FDDI usage, with the term media converter being preferred for general usage. Synonym media converter.
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- density, OD, optical density (OD), optical link, optical transmittance, transmittance