DS

digital signal (level)
(データ通信での)ディジタル信号(レベル). 時分割多重化階層でのパルス伝送速度.
digital signal (level); the digital transmission pulse rate within the time-division multiplexing hierarchy; the DS0 level is 64 kilobits per second (equivalent to one voice channel); DS1 is 1.544 Mb/s (24 DS0

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