Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, his attorney, for him and in his name, place and stead, and in his office and capacity in the Corporation as an officer and a director, 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 or necessary to be done in and concerning the premises, as fully to all intents and purposes as he 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 29th day of January 1999. /s/ Edward E. Whitacre, Jr. __________________________________ Edward E. Whitacre, Jr. Director and Chairman of the Board and Chief Executive Officer Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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 Edward E. Whitacre, Jr., James D. Ellis, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, his attorney, for him and in his name, place and stead, and in his office and capacity in the Corporation as an officer, 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 or necessary to be done in and concerning the premises, as fully to all intents and purposes as he 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 29th day of January 1999. /s/ Royce S. Caldwell ________________________________ Royce S. Caldwell President-SBC Operations and Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, his attorney, for him and in his name, place and stead, and in his office and capacity in the Corporation as an officer, 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 or necessary to be done in and concerning the premises, as fully to all intents and purposes as he 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 29th day of January 1999. /s/ D. E. Kiernan ________________________________ D. E. Kiernan Senior Vice President, Treasurer and Chief Financial Officer Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Clarence C. Barksdale __________________________________ Clarence C. Barksdale Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ James E. Barnes __________________________________ James E. Barnes Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ August A. Busch III __________________________________ August A. Busch III Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Ruben R. Cardenas __________________________________ Ruben R. Cardenas Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ William P. Clark __________________________________ William P. Clark Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Martin K. Eby, Jr. __________________________________ Martin K. Eby, Jr. Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Herman E. Gallegos __________________________________ Herman E. Gallegos Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Jess T. Hay __________________________________ Jess T. Hay Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Bobby R. Inman __________________________________ Bobby R. Inman Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Charles F. Knight __________________________________ Charles F. Knight Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Mary S. Metz __________________________________ Mary S. Metz Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Haskell M. Monroe, Jr. __________________________________ Haskell M. Monroe, Jr. Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Toni Rembe __________________________________ Toni Rembe Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ S. Donley Ritchey __________________________________ S. Donley Ritchey Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Joyce M. Roche __________________________________ Joyce M. Roche Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Richard M. Rosenberg __________________________________ Richard M. Rosenberg Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Carlos Slim Helu __________________________________ Carlos Slim Helu Director Exhibit 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS: THAT, WHEREAS, SBC COMMUNICATIONS 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, Donald E. Kiernan, Alfred G. Richter, Jr., Judith M. Sahm, or any one of them, all having addresses in the City of San Antonio and State of Texas, the undersigned's attorney, for the undersigned and in the undersigned's name, place and stead, and in the undersigned's office and capacity in the Corporation as a director, 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 or 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 29th day of January 1999. /s/ Patricia P. Upton __________________________________ Patricia P. Upton Director