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 27 day of January 2006.

/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 an officer of the Corporation;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Edward E. Whitacre, Jr., James D. Ellis, Jon P. Klug, 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 his 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 27 day of January 2006.

/s/ Richard G. Lindner

Richard G. Lindner

Senior Executive Vice President and

Chief Financial 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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/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 27 day of January 2006.

/s/ Randall L. Stephenson

Randall L. Stephenson

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 27 day of January 2006.

/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 27 day of January 2006.

/s/ Patricia P. Upton

Patricia P. Upton

Director