Net Yield means, on any day, the percentage equivalent of (a) four multiplied by (b) a fraction the numerator of which is equal to (i) the sum of (x) the aggregate of all interest collected on Contracts during the three immediately preceding Collection Periods, (y) the investment earnings on amounts deposited in the Prefunding Account transferred to the Payment Account with respect to the three immediately preceding Distribution Dates and (z) the amounts transferred from the Capitalized Interest Account to the Payment Account with respect to the three immediately preceding Distribution Dates, minus (ii) the sum of (A) the aggregate outstanding principal balances of Contracts which became Liquidated Contracts other than by virtue of a Full Prepayment during such three Collection Periods (less any Net Liquidation Proceeds received with respect to such Liquidated Contracts during such three Collection Periods) and (B) interest paid to the Noteholders and the Servicing Fees paid to the Servicer during such three Collection Periods, and the denominator of which is equal to the average of the Pool Balances as of the last day of each of such three immediately preceding Collection Periods.

Weighted Average Yield means with respect to any Loan, on any date of determination, the weighted average yield to maturity, in each case, based on the interest rate applicable to such Loan on such date and giving effect to all upfront or similar fees or original issue discount payable with respect to such Loan.

Treasury Yield means, with respect to any Redemption Date, the rate per annum equal to the semiannual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date.

Money Market Yield means a yield (expressed as a percentage) calculated in accordance with the following formula: Money Market Yield = D x 360 x 100 360 – (D x M) where “D” refers to the applicable per annum rate for commercial paper quoted on a bank discount basis and expressed as a decimal, and “M” refers to the actual number of days in the applicable Interest Reset Period.

Weighted Average Quotation means, in accordance with the Quotation Method, the weighted average of firm quotations obtained from Dealers at the Valuation Time, to the extent reasonably practicable, each for an amount of the Reference Obligation with an outstanding principal balance (which, for the avoidance of doubt, shall exclude any amounts of capitalised interest) of as large a size as available but less than the Quotation Amount (but of a size equal to the Minimum Quotation Amount or, if quotations of a size equal to the Minimum Quotation Amount are not available, quotations as near in size as practicable to the Minimum Quotation Amount) that in the aggregate are approximately equal to the Quotation Amount and Section 7.11 of the Credit Definitions shall be amended accordingly.

Pricing Level refers to the determination of which of Level I, Level II, Level III, Level IV, Level V or Level VI applies at any date.

Comparable Treasury Issue means the United States Treasury security or securities selected by an Independent Investment Banker as having an actual or interpolated maturity comparable to the remaining term of the Notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of a comparable maturity to the remaining term of such Notes.

Accrual Yield means the rate specified as such in the applicable Final Terms; and

Applicable Pricing Level means, for each Pricing Period the pricing level set forth below opposite the Debt Rating achieved by Borrower as of the first day of that Pricing Period: Pricing Level Debt Rating I Greater than or equal to A1 / A+ II Less than A1 / A+ but greater than or equal to A2 / A III Less than A2 / A but greater than or equal to A3 / A- V Less than Baa2/BBB provided that in the event that the then prevailing Debt Ratings are “split ratings”, Borrower will receive the benefit of the higher Debt Rating, unless the split is a “double split rating” (in which case the pricing level applicable to the middle Debt Rating will apply) or a “triple split rating” (in which case the pricing level applicable to the Debt Rating above the Debt Rating applicable to the lowest pricing level will apply). For purposes hereof, a Debt Rating is only a “split rating” if the Debt Rating applies to a different pricing level.

Comparable Treasury Price means, with respect to any redemption date, (1) the average of the Reference Treasury Dealer Quotations for such redemption date after excluding the highest and lowest of such Reference Treasury Dealer Quotations, or (2) if AT&T obtains fewer than three such Reference Treasury Dealer Quotations, the average of all such quotations.

Debt Yield means, as of any date of determination, a fraction expressed as a percentage in which:

Yield means yield as defined in Section 148(h) of the Code and any regulations promulgated thereunder.

5-year Mid-Swap Rate means, in relation to a Reset Interest Period and the Reset Rate of Interest Determination Date in relation to such Reset Interest Period:

Applicable Treasury Rate means the weekly average for each Business Day during the most recent week that has ended at least two Business Days prior to the redemption date of the yield to maturity at the time of computation of United States Treasury securities with a constant maturity (as compiled and published in the most recent Federal Reserve Statistical Release H. 15 (or, if such statistical release is not so published or available, any publicly available source of similar market data selected by the Company in good faith)) most nearly equal to the period from the redemption date to May 1, 2022; provided, however, that if the period from the redemption date to May 1, 2022 is not equal to the constant maturity of a United States Treasury security for which a yield is given, the Applicable Treasury Rate shall be obtained by linear interpolation (calculated to the nearest one-twelfth of a year) from the yields of United States Treasury securities for which such yields are given, except that if the period from the redemption date to such applicable date is less than one year, the weekly average yield on actually traded United States Treasury securities adjusted to a constant maturity of one year shall be used.

Volume Weighted Average Price means, in respect of a Common Share, Security or, as the case may be, a Spin-Off Security on any dealing day, the order book volume-weighted average price of a Common Share, Security or, as the case may be, a Spin-Off Security published by or derived (in the case of a Common Share) from the Reference Page or (in the case of a Security (other than Common Shares) or Spin-Off Security) from the principal stock exchange or securities market on which such Securities or Spin-Off Securities are then listed or quoted or dealt in, if any or, in any such case, such other source as shall be determined in good faith to be appropriate by an Independent Financial Adviser on such dealing day, provided that if on any such dealing day such price is not available or cannot otherwise be determined as provided above, the Volume Weighted Average Price of a Common Share, Security or a Spin-Off Security, as the case may be, in respect of such dealing day shall be the Volume Weighted Average Price, determined as provided above, on the immediately preceding dealing day on which the same can be so determined or as an Independent Financial Adviser might otherwise determine in good faith to be appropriate; and

Portfolio Yield means, with respect to any Monthly Period, the annualized percentage equivalent of a fraction, the numerator of which is (a) the amount of Available Funds allocated to the MBNAseries pursuant to Section 501 of the Indenture, plus (b) any Interest Funding sub-Account Earnings on the related Transfer Date, plus (c) any amounts to be treated as MBNAseries Available Funds pursuant to Sections 3.20(d) and 3.27(a) of the Indenture Supplement, plus (d) the MBNAseries Servicer Interchange for such Monthly Period, minus (e) the excess, if any, of the sum of the PFA Prefunding Earnings Shortfall plus the PFA Accumulation Earnings Shortfall over the sum of the aggregate amount to be treated as MBNAseries Available Funds for such Monthly Period pursuant to Sections 3.04(a)(ii) and 3.25(a) of the Indenture Supplement plus any other amounts applied to cover earnings shortfalls on amounts in the Principal Funding sub-Account for any tranche of MBNAseries Notes for such Monthly Period, minus (f) the MBNAseries Investor Default Amount for such Monthly Period, and the denominator of which is the Weighted Average Available Funds Allocation Amount for the MBNAseries for such Monthly Period.

Reliability Pricing Model Auction or “RPM Auction” shall mean the Base Residual Auction or any Incremental Auction, or, for the 2016/2017 and 2017/2018 Delivery Years, any Capacity Performance Transition Incremental Auction.

Reference Level means the level of the Index (excluding any flash estimates) published or announced by Eurostat (or any successor entity which publishes such index) in respect of the month that is 12 calendar months prior to the month referred to in “Latest Level” above.

Monthly Average Subscriber Level means the average number of Subscribers of the Licensee in a particular month, as set forth in the applicable month’s Subscriber Report (refer Schedule D).

Weighted Average Floating Spread means, as of any date of determination, the number, expressed as a percentage, obtained by summing the products obtained by multiplying, in the case of each Floating Rate Portfolio Investment included in the Borrowing Base, on an annualized basis, the Spread of such Floating Rate Portfolio Investments, by the outstanding principal balance of such Floating Rate Portfolio Investments as of such date and dividing such sum by the aggregate outstanding principal balance of all such Floating Rate Portfolio Investments and rounding the result up to the nearest 0.01%.

Bond Yield means the yield of the last series of Bonds issued, for purposes of this calculation the yield of the Bonds shall be the yield calculated at the time such Bonds are issued, pursuant to Section 148 of the Internal Revenue Code of 1986, as amended for the purpose of the Non- Arbitrage Certificate or other similar bond issuance document.

Reinvestment Yield means, with respect to the Called Principal of any Note, 0.50% over the yield to maturity implied by the yield(s) reported as of 10:00 a.m. (New York City time) on the second Business Day preceding the Settlement Date with respect to such Called Principal, on the display designated as “Page PX1” (or such other display as may replace Page PX1) on Bloomberg Financial Markets for the most recently issued actively traded on-the-run U.S. Treasury securities (“Reported”) having a maturity equal to the Remaining Average Life of such Called Principal as of such Settlement Date. If there are no such U.S. Treasury securities Reported having a maturity equal to such Remaining Average Life, then such implied yield to maturity will be determined by (a) converting U.S. Treasury xxxx quotations to bond equivalent yields in accordance with accepted financial practice and (b) interpolating linearly between the yields Reported for the applicable most recently issued actively traded on-the-run U.S. Treasury securities with the maturities (1) closest to and greater than such Remaining Average Life and (2) closest to and less than such Remaining Average Life. The Reinvestment Yield shall be rounded to the number of decimal places as appears in the interest rate of the applicable Note.

Final Index Level : means the Closing Level of the FTSE 100 Index on the Investment End Date.

Treasury Index Rate means the average yield to maturity for actively traded marketable U.S. Treasury fixed interest rate securities having the same number of 30-day periods to maturity as the length of the applicable Dividend Period, determined, to the extent necessary, by linear interpolation based upon the yield for such securities having the next shorter and next longer number of 30-day periods to maturity treating all Dividend Periods with a length greater than the longest maturity for such securities as having a length equal to such longest maturity, in all cases based upon data set forth in the most recent weekly statistical release published by the Board of Governors of the Federal Reserve System (currently in H.15 (519)); provided, however, if the most recent such statistical release shall not have been published during the 15 days preceding the date of computation, the foregoing computations shall be based upon the average of comparable data as quoted to the Trust by at least three recognized dealers in U.S. government securities selected by the Trust.

Level V Pricing applies on any day on which (i) the Borrower’s long-term debt is rated BBB or higher by S&P or Baa2 or higher by Moody’s and (ii) none of Level I Pricing, Level II Pricing, Level III Pricing or Level IV Pricing applies.

Adjusted Treasury Rate means, with respect to any Redemption Date, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date.