回かい線せん交こう換かんMeaningsNoun1. circuit switchingKanji used回going around線line交mingle換exchangePitch accentかいせんこうかんComposed of回かい線せんcircuit; lineNoun交こう換かんexchange; interchange; switching; reciprocity; barter; substitution; replacement; clearing (of checks, cheques)Noun