AT&T Wireless 2006 Annual Report Download - page 83

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2006 AT&T Annual Report : :
81
Report of Independent Registered Public Accounting Firm
The Board of Directors and Stockholders
AT&T Inc.
We have audited the accompanying consolidated balance sheets of AT&T Inc. (the Company) as of December 31, 2006 and 2005,
and the related consolidated statements of income, stockholders’ equity, and cash flows for each of the three years in the period
ended December 31, 2006. These financial statements are the responsibility of the Company’s management. Our responsibility is
to express an opinion on these financial statements based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States).
Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial state-
ments are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.
In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial
position of the Company at December 31, 2006 and 2005, and the consolidated results of its operations and its cash flows for
each of the three years in the period ended December 31, 2006, in conformity with U.S. generally accepted accounting principles.
As discussed in Note 1 to the financial statements, in 2006 the Company changed its method of accounting for pension and
other postretirement benefits.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the
effectiveness of the Company’s internal control over financial reporting as of December 31, 2006, based on criteria established in
Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and
our report dated February 15, 2007, expressed an unqualified opinion thereon.
San Antonio, Texas
February 15, 2007