Required Reserve Factor Floor

Required Reserve Factor Floor. Means, for any Calculation Period, the sum (expressed as a percentage) of (a) 20.00% plus (b) the product of the Adjusted Dilution Ratio times the Dilution Horizon Ratio, in each case, as of the Cut-Off Date immediately preceding the Cut-Off Date of such Calculation Period; provided, however, that the number in clause (a) of this definition shall be increased to 30.00% if the short term rating of AT&T Corporation is lowered by S&P or Moody's to A3 / P3 respectively or below.