Misomali yamutu wa Duplex ndi misomali yapadera yothandiza pomanga kwakanthawi, monga misomali yothira konkriti kapena kuyika zotchingira zosakhalitsa pantchito yofolera.Mumakhomerera msomali mpaka mutu wapansi ukuphwa ndi nkhuni.Ikafika nthawi yothira pulojekitiyi, mutha kutulutsa msomali pogwiritsa ntchito mutu wapamwamba komanso chikhadabo cha nyundo kapena kukoka.