EXHIBIT 11.1 CORTELCO SYSTEMS, INC. STATEMENT REGARDING COMPUTATION OF NET LOSS PER SHARE ------------------------------ 1996 1997 1998 ------------------------------ In thousands, except per share data Basic: Income available to common shareholders......... $ (275) $(2,039) $ (133) Weighted average share outstanding.............. 3,825 3,825 3,918 ------- -------- ------- Basic loss per share............................ $(0.07) $ (0.53) $(0.03) ------- -------- ------- Diluted: Income available to common shareholders......... $ (275) $(2,039) $ (133) Interest on convertible debt.................... 55 ------- -------- ------- Income available after assumed conversion....... (275) (2,039) (78) Weighted average shares--basic.................. 3,825 3,825 3,918 Assumed conversion of convertible debt 1,435 ------- -------- ------- Weighted average shares--diluted................ 3,825 3,825 5,353 ------- -------- ------- Diluted loss per share.......................... $(0.07) $ (0.53) $(0,02) ======= ======== =======