loop circuit

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• loop circuit —    Circuit linking a subscriber s telephone with the local switching equipment …   IT glossary of terms, acronyms and abbreviations

• Loop start — In telecommunications, a loop start is a supervisory signal given by a telephone or PBX in response to the completion of the loop circuit, commonly referred to as off hook . When idle, or on hook , the loop is at 48V DC (provided by the CO or FXS …   Wikipedia

• loop — loop1 [lo͞op] n. [ME loup < Anglo N forms corresponding to ON hlaup, a leap, hlaupa, to run (akin to LEAP) > Dan løbe(knude), lit., running (knot)] 1. a) the more or less circular figure formed by a line, thread, wire, etc. that curves back …   English World dictionary

• loop — ► NOUN 1) a shape produced by a curve that bends round and crosses itself. 2) (also loop the loop) a manoeuvre in which an aircraft describes a vertical circle in the air. 3) an endless strip of tape or film allowing continuous repetition. 4) a… …   English terms dictionary

• Circuit — may mean: In science and technology Circuit theory, the theory of accomplishing work by routing electrons, gas, fluids, or other matter through a loop Pneumatic circuit Hydraulic circuit Boolean circuit circuit (computer theory) Integer circuit a …   Wikipedia

• Loop — Loop, n. [Cf. Ir. & Gael. lub loop, noose, fold, thong, bend, lub to bend, incline.] 1. A fold or doubling of a thread, cord, rope, etc., through which another thread, cord, etc., can be passed, or which a hook can be hooked into; an eye, as of… …   The Collaborative International Dictionary of English

• Loop knot — Loop Loop, n. [Cf. Ir. & Gael. lub loop, noose, fold, thong, bend, lub to bend, incline.] 1. A fold or doubling of a thread, cord, rope, etc., through which another thread, cord, etc., can be passed, or which a hook can be hooked into; an eye, as …   The Collaborative International Dictionary of English

• Circuit quantum electrodynamics — (circuit QED) provide the means to study the fundamental interaction between light and matter. As in the field of cavity quantum electrodynamics a single photon within a single mode cavity coherently couples to a quantum object (atom). In… …   Wikipedia

• loop — [n] circle, spiral bend, circuit, circumference, coil, convolution, curl, curve, eyelet, hoop, kink, knot, loophole, noose, ring, twirl, twist, whorl, wreath; concept 436 Ant. line loop [v] circle, spiral arc, arch, begird, bend, bow, braid, coil …   New thesaurus

• Circuit theory — For the theory of monetary economics, see monetary circuit theory. Circuit theory is the theory of accomplishing work by means of routing matter through a loop.[citation needed] The types of matter used are: In electronic or electrical circuits:… …   Wikipedia

• Loop around — A Loop line or Loop Around is a telephone company test circuit. The circuit did not connect to a specific place, and required two numbers dedicated to it. When one side of the loop was called (Side A), the caller got an approximately 1000 Hz tone …   Wikipedia