Acronym: DS0 – DS1 – DS2 – DS3

DS0 – Digital Signal Level Zero. This is a single digital data channel of 64 Kilobytes per second.

DS1 – Digital Signal level One. This is a signaling scheme of 24 DS0 channels. It is also commonly called a T1 circuit.

DS2 – Digital Signal Level Two. This is a signaling scheme equal to 4 DS1 circuits.

DS3 – Digital Signal Level Three. Signaling scheme equal to 28 DS1 circuits or 44.736 Mb/s.



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