Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is an officer and a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, his attorneys for him and in his name, place and stead, and in each of his offices and capacities in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Edward E. Whitacre, Jr.

Edward E. Whitacre, Jr.

Chairman of the Board, Director

and Chief Executive Officer

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Gilbert F. Amelio

Gilbert F. Amelio

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ William F. Aldinger III

William F. Aldinger III

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Reuben V. Anderson

Reuben V. Anderson

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ James H. Blanchard

James H. Blanchard

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ August A. Busch III

August A. Busch III

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ James P. Kelly

James P. Kelly

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Jon C. Madonna

Jon C. Madonna

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Martin K. Eby, Jr.

Martin K. Eby, Jr.

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ James A. Henderson

James A. Henderson

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the day of January 2007.

/s/ Charles F. Knight

Charles F. Knight

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Lynn M. Martin

Lynn M. Martin

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ John B. McCoy

John B. McCoy

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Mary S. Metz

Mary S. Metz

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Toni Rembe

Toni Rembe

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ S. Donley Ritchey

S. Donley Ritchey

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Joyce M. Roché

Joyce M. Roché

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Randall L. Stephenson

Randall L. Stephenson

Director and Chief Operating Officer

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the day of January 2007.

/s/ Laura D'Andrea Tyson

Laura D'Andrea Tyson

Director

Exhibit 24

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

THAT, WHEREAS, AT&T INC., a Delaware corporation, hereinafter referred to as the "Corporation," proposes to file with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, as amended, an annual report on Form 10-K; and

WHEREAS, the undersigned is a director of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, Richard G. Lindner, John J. Stephens, or any one of them, all of the City of San Antonio and State of Texas, the attorneys for the undersigned and in the undersigned’s name, place and stead, and in the undersigned’s office and capacity in the Corporation, to execute and file such annual report, and thereafter to execute and file any amendment or amendments thereto, hereby giving and granting to said attorneys full power and authority to do and perform each and every act and thing whatsoever requisite and necessary to be done in and concerning the premises, as fully to all intents and purposes as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, the undersigned executed this Power of Attorney the 26 day of January 2007.

/s/ Patricia P. Upton

Patricia P. Upton

Director