ocr: DLSDUS received DLSDUS sent Successfully Incorrect Extra DL(1) + DL(s) + DLIX) Lost DLSDUS DLSDUS transferred 11 DL(s) DLSDUS = DL(X) DLSDUS - i ER =l DL l DL(s) DL(1) Total DLSDUS transferred = DL T0701972-88 FIGURE 3/X.212 Components of Residual Error Rate