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 Wayne Watts, 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 1st day of February 2008.

/s/ Randall L. Stephenson

Randall L. Stephenson

Chairman of the Board

and Chief Executive Officer

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ Gilbert F. Amelio

Gilbert F. Amelio

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ William F. Aldinger III

William F. Aldinger III

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ Reuben V. Anderson

Reuben V. Anderson

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ James H. Blanchard

James H. Blanchard

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ August A. Busch III

August A. Busch III

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ James P. Kelly

James P. Kelly

Director

 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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ Jon C. Madonna

Jon C. Madonna

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ John B. McCoy

John B. McCoy

Lead Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ Charles F. Knight

Charles F. Knight

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ Lynn M. Martin

Lynn M. Martin

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ Mary S. Metz

Mary S. Metz

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ Toni Rembe

Toni Rembe

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ Joyce M. Roché

Joyce M. Roché

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st  day of February 2008.

/s/ Laura D'Andrea Tyson

Laura D'Andrea Tyson

Director

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 Randall L. Stephenson, Wayne Watts, 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 1st day of February 2008.

/s/ Patricia P. Upton

Patricia P. Upton

Director