EXHIBIT 12 PACIFIC BELL COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES Dollars in Millions THREE MONTHS ENDED MARCH 31, YEAR ENDED DECEMBER 31, ------------------- -------------------------------------------------------- 1999 1998 1998 1997 1996 1995 1994 ------------------- -------------------------------------------------------- Income Before Income Taxes, Extraordinary Loss and Cumulative Effect of Accounting Changes $ 513 $ 413 $ 1,871 $ 34 $ 1,568 $ 1,161 $ 1,276 Add:Interest Expense 103 106 426 460 379 420 437 1/3 Rental Expense 9 9 39 41 47 29 22 --------- -------- --------- --------- --------- --------- ---------- Adjusted Earnings $ 625 $ 528 $ 2,336 $ 535 $ 1,994 $ 1,610 $ 1,735 ========= ======== ========= ========= ========= ========= ========== Total Interest Charges $ 112 $ 115 $ 461 $ 497 $ 412 $ 420 $ 437 1/3 Rental Expense 9 9 39 41 47 29 22 --------- -------- --------- --------- --------- --------- ---------- Adjusted Fixed Charges $ 121 $ 124 $ 500 $ 538 $ 459 $ 449 $ 459 ========= ======== ========= ========= ========= ========= ========== Ratio of Earnings to Fixed Charges 5.17 4.26 4.67 0.99* 4.34 3.59 3.78 <FN> * As defined within the computation of earnings to fixed charges, earnings are $3 less than fixed charges for 1997. See Management's Discussion and Analysis of Results of Operations in Pacific Bell's 1997 Annual Report on Form 10-K for a discussion of merger-related and other unusual items that reduced earnings for 1997. </FN>