NEW YORK (Standard&Poor's) June 12, 2012--Standard&Poor's Ratings Services said today that it assigned Dallas, Texas-based telecom company AT&T Inc.'s $1.15 billion of senior notes due 2017 its 'A-' issue-level rating. In addition, the 'A-' rating on the company's notes due 2022 remains unchanged following an $850 million add-on, bringing the aggregate dollar amount of this issue to $1.85 billion. We expect the company to use net proceeds for general corporate purposes, including the repayment of maturing debt, and we do not expect these transactions to materially impact key credit measures for more than a temporary period. The 'A-' long-term corporate credit rating on AT&T remains unchanged, as do the 'A-2' short-term rating and the stable rating