Exhibit 12 		MICHIGAN BELL TELEPHONE COMPANY 	 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES 			 (Dollars in thousands) 				 Six Months Six Months 				 Ended Ended 				 June 30, June 30, 				 1994 1993 							 1. Earnings 	(a) Income before interest 	 expense, income taxes 	 and cumulative effect of 	 change in accounting 	 principles $191,894 $282,932 		 (b) Single Business Tax 14,700 13,740 					 (c) Portion of rental expense representative of the interest factor (1) (2) 5,416 6,685 					 Total 1.(a) through (c) $212,010 $303,357 												 2. Fixed Charges (a) Total interest deductions $48,101 $53,356 					 (c) Portion of rental expense representative of the interest factor (1) (2) 5,416 6,685 							 Total 2.(a) and (b) $53,517 $60,041 												 3. Ratio (1. divided by 2.) 3.96 5.05 (1)) The Company considers 1/3 of rental expense to be the 	 amount representing return on capital and therefore 	 it must be included in fixed charges. (2) Earnings are income before income taxes and fixed charges. 	 Since the Single Business Tax and rental expense have 	 already been deducted, the Tax and the 1/3 portion of 	 rental expense considered to be fixed charges are 	 added back.