A line code used for T-1 and E-1 lines that has a 12.5% ones density minimum, and the one conditions of the signal alternate between positive and negative polarity.
A bipolar signal conveying binary digits, in which successive 1's (marks, pulses) are of alternating positive (+) and negative (-) polarity, equal in amplitude, and a 0 (space, no pulse) is of zero amplitude.
A line code used for T1 and E1 lines.
A digital signaling method in which the signal carrying the binary value alternates between positive and negative polarities; zero and one values are represented by the signal amplitude at either polarity; no-value "spaces" are at zero amplitude. Also called bipolar.