EXHIBIT 12 CAROLINA TELEPHONE AND TELEGRAPH COMPANY COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (UNAUDITED) (dollars in thousands) Quarter Ended Year to Date September 30, September 30, --------------------------------------------------------------------- 1997 1996 1997 1996 - ------------------------------------------------------------------------------------------------------------------ Earnings Income before income taxes and extraordinary item $ 51,681 $ 49,248 $ 154,223 $ 149,061 Capitalized interest 105 881 (51) (168) - ------------------------------------------------------------------------------------------------------------------ Subtotal 51,786 50,129 154,172 148,893 - ------------------------------------------------------------------------------------------------------------------ Fixed charges Interest charges 5,808 5,151 16,768 16,493 Interest factor of operating rents 766 547 1,800 1,691 - ------------------------------------------------------------------------------------------------------------------ Total fixed charges 6,574 5,698 18,568 18,184 - ------------------------------------------------------------------------------------------------------------------ Earnings, as adjusted $ 58,360 $ 55,827 $ 172,740 $ 167,077 --------------------------------------------------------------------- Ratio of earnings to fixed charges 8.88 9.80 9.30 9.19 --------------------------------------------------------------------- Note: These ratios were computed by dividing fixed charges into the sum of (a) income before income taxes and extraordinary item, less capitalized interest, and (b) fixed charges. Fixed charges consist of interest on all debt (including amortization of debt issuance expenses) and the interest component of operating rents.