Exhibit 23
Form 11-K for 2019
File No. 1-8610
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in the Registration Statement (Form S-8, No. 333-189789) of our report dated
June 29, 2020, relating to the statements of net assets available for benefits as of December 31, 2019 and 2018, the statement of
changes in net assets available for benefits for the year ended December 31, 2019, and the supplemental schedule of assets (held at end
of year) as of December 31, 2019, of the BellSouth Savings and Security Plan, which appears in this Annual Report on Form 11-K of
the BellSouth Savings and Security Plan for the year ended December 31, 2019.
/s/ BKD, LLP
San Antonio, Texas
June 29, 2020