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2B1Q ==>
two-binary, one-quaternary
<communications> (2B1Q) A physical layer encoding used for
Integrated Services Digital Network basic rate interface.
2B1Q represents two bits (2B - a "dibit") using one of four
signal levels (1Q - a "quadratude"). The first bit of the
dibit is indicated by polarity: positive indicates a binary 1
and negative indicates a 0. The second half of the dibit is
indicated by voltage magnitude: 1 Volt indicates a binary 1
and 3 Volts indicates binary 0.
(2003-01-10)
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Nearby terms:
twisted pair only « twm « .twmrc « two-binary, one-quaternary » twonkie » two-phase commit » twos complement
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
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