Prepetition Subsidiary Debt means, collectively, the (i) 8.500% Secured Debentures due November 15, 2031, issued under that certain Indenture, dated as of June 1, 1940 (as amended, restated, amended and restated, supplemented or otherwise modified from time to time prior to the Petition Date) by and among GTE Southwest Incorporated, as issuer, and NCNB Texas National Bank, as trustee, (ii) 6.750% Unsecured Debentures due May 15, 2027, issued under that certain Indenture, dated as of December 1, 1993 (as amended, restated, amended and restated, supplemented or otherwise modified from time to time prior to the Petition Date) by and among GTE California Incorporated, as issuer, and U.S. Bank Trust National Association, as successor trustee to Bank of America National Trust and Savings Association, (iii) 6.730% Unsecured Debentures due February 15, 2028, issued under that certain Indenture, dated as of January 1, 1994 (as amended, restated, amended and restated, supplemented or otherwise modified from time to time prior to the Petition Date) by and among GTE North Incorporated, as issuer, and The First National Bank of Chicago, as trustee, (iv) 6.860% Unsecured Debentures due February 2, 2028, issued under that certain Indenture, dated as of November 1, 1993 (as amended, restated, amended and restated, supplemented or otherwise modified from time to time prior to the Petition Date) by and among GTE Florida Incorporated, as issuer, and The Bank of New York, as successor trustee to NationsBank of Georgia, National Association, as trustee, and (v) 8.400% Unsecured Debentures due October 15, 2029, represented by the Debentures, dated as of October 25, 1989, and issued by The Chesapeake and Potomac Telephone Company of West Virginia pursuant to a Purchase Agreement dated October 1989 with the purchasers, in each case that are issued and outstanding on the Closing Date.