PMD
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physical medium dependent (layer)
(光ファイバー通信網の)物理媒体依存(層). ANSIによるFDDIのプロトコル.
physical medium dependent (layer); of FDDI(Fiber Distributed Data Interface) standard by ANSI; specifies the private optical fiber links and related optical components; would include single- and multimode fiber
![](dev/images/h-r-.png)
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