Exhibit 99.2

                                                             EXECUTION VERSION

           SECOND AMENDMENT, dated as of April 20, 2004 (this "Second
Amendment"), to the Stock Purchase Agreement, dated as of March 12, 2004, as
amended by that certain First Amendment, dated as of April 7, 2004 (as amended
by the First Amendment, the "Purchase Agreement"), by and among Telefonos de
Mexico, S.A. de C.V., a Mexican sociedad anonima de capital variable ("Buyer"),
WorldCom, Inc., a Georgia corporation (or its successor in interest following
the Effective Date) ("Parent"), MCI International, Inc., a Delaware corporation
(or its successor in interest following the Effective Date) ("MCII"), MCI
WorldCom International, Inc., a Delaware corporation (or its successor in
interest following the Effective Date) ("MCIWI"), and MCI WorldCom Brazil LLC, a
Delaware limited liability company (or its successor in interest following the
Effective Date) ("MCIWB" and, collectively with MCII and MCIWI, the "Sellers").
Each capitalized term used and not otherwise defined herein shall have the
meaning assigned to such term in the Purchase Agreement.

           WHEREAS, pursuant to terms and subject to the conditions set forth in
the Purchase Agreement, the Sellers have agreed to sell to Buyer, and Buyer has
agreed to purchase from the Sellers, the Shares for the Purchase Price;

           WHEREAS, the Chapter 11 Plan became effective on April 20, 2004 (the
"Effective Date"); and

           WHEREAS, Buyer, Parent and the Sellers seek to amend the Purchase
Agreement as set forth herein in accordance with Section 8.03(a) of the Purchase
Agreement.

           NOW THEREFORE, in consideration of the mutual agreements herein
contained and other good and valuable consideration, the sufficiency and receipt
of which are hereby acknowledged, the parties hereto agree as follows:

           Section 1. Amendments to the Purchase Agreement.

           (a) Section 1.01(a) of the Purchase Agreement is hereby amended to
add the following terms thereto in the appropriate alphabetic order:

                     "Deposit Return Date" means July 9, 2004, provided, that,
           if on July 9, 2004 the conditions to Closing set forth in Section
           6.01(c) and Section 6.02 have not been satisfied or waived by the
           parties hereto, then the Deposit Return Date shall be extended until
           the first Business Day thereafter on which such conditions set forth
           in Section 6.01(c) and Section 6.02 shall have been satisfied or
           waived.

                     "Outside Date" means July 8, 2005.

           (b) Section 1.01(a) of the Purchase Agreement is hereby amended to
amend and restate the definition of "Alternate Proposal" as follows:

                     "Alternate Proposal" means any proposal or offer with
           respect to the acquisition or other transfer of the Shares, the
           Common Stock or the business of Embratel."


           (c) Section 2.02(b) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "Buyer shall pay an amount in cash equal to U.S.
           $400,000,000 (FOUR HUNDRED MILLION DOLLARS) (provided, however, that
           if the Termination Fee Order is not entered by the Bankruptcy Court
           by 6:00 p.m., New York City time on April 26, 2004, then the Buyer
           shall have the right to reduce such amount to U.S. $360,000,000
           (THREE HUNDRED SIXTY MILLION DOLLARS)), less all amounts paid by
           Buyer to the Sellers pursuant to Section 5.01(f) hereof, to an
           account designated in writing by the Sellers, not less than three (3)
           Business Days prior to the Closing, by wire transfer of immediately
           available funds (such amount to be paid at Closing, the "Purchase
           Price")."

           (d) Section 3.03(a) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "The execution, delivery and performance by Parent and each
           Seller of this Agreement and the other Seller Documents and the
           consummation by Parent and such Seller of the transactions
           contemplated hereby and thereby require no action by or in respect
           of, or filing with, any Governmental Entity, other than (i)
           compliance with any applicable requirements of Laws, rules and
           regulations governing antitrust or merger control matters, including,
           without limitation, the filing with Conselho Administrativo de Defesa
           Economica ("CADE") through ANATEL, (ii) compliance with any
           applicable requirements of Law governing telecommunications matters
           including, without limitation, the General Telecommunications Law
           (the "GTL") and the General Grants Plan (the "GGP"), and receipt of
           all requisite approvals of ANATEL, (iii) compliance with any
           applicable requirements of any securities or takeover Laws, whether
           domestic or foreign, including, without limitation. Article 254-A of
           the BCL and Rule 361 of March 5, 2002 of the CVM, (iv) filings with
           the applicable Boards of Trade of amendments to the articles of
           association of each of the Companies in order to assign and transfer
           the Shares, (v) approval by the Bankruptcy Court of this Agreement
           and the transactions contemplated hereby, (vi) approval by the U.S.
           Federal Communication Commission (the "FCC") in connection with the
           assignment to Buyer of termination of Embratel's authorization by the
           FCC under Section 214 of the Communications Act of 1934, as amended,
           and (vii) any actions or filings the absence of which would not
           materially impair the ability of Parent or such Seller to consummate
           the transactions contemplated by this Agreement."

           (e) Section 4.03(a) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:


                                       2

                     "The execution, delivery and performance by Buyer of this
           Agreement and the other Buyer Documents and the consummation by Buyer
           of the transactions contemplated hereby and thereby require no action
           by or in respect of, or filing with, any Governmental Entity, other
           than (i) compliance with any applicable requirements of Laws, rules
           and regulations governing antitrust or merger control matters,
           including, without limitation, the filing with CADE through ANATEL,
           (ii) compliance with any applicable requirements of Law governing
           telecommunications matters including, without limitation, the GTL and
           the GGP, and receipt of all requisite approvals of ANATEL, (iii)
           compliance with any applicable requirements of any securities or
           takeover Laws, whether domestic or foreign, including, without
           limitation. Article 254-A of the BCL and Rule 361 of March 5, 2002 of
           the CVM, (iv) filings with the applicable Boards of Trade of
           amendments to the articles of association of each of the Companies in
           order to assign and transfer the Shares, (v) approval by the FCC in
           connection with the assignment to Buyer or termination of Embratel's
           authorization by the FCC under Section 214 of the Communications Act
           of 1934, as amended, and (vi) any actions or filings the absence of
           which would not materially impair the ability of Buyer to consummate
           the transactions contemplated by this Agreement."

           (f) Section 5.01(f) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "As an added inducement to Parent and the Sellers to enter
           into this Agreement with Buyer, the parties hereto intend and have
           agreed that Buyer shall make certain payments to the Sellers in the
           event that the regulatory approvals required in order to consummate
           the transactions contemplated hereby are delayed or not obtained or
           injunctions in respect of the granting thereof are issued. Consistent
           therewith, (i) on the first Business Day following the date of this
           Agreement, Buyer shall pay an amount in cash equal to U.S.
           $20,000,000 (TWENTY MILLION DOLLARS) to an account of the Sellers
           designated by the Sellers, by wire transfer of immediately available
           funds, and (ii) on the second Business Day following the date the
           Sale Order is entered by the Bankruptcy Court, Buyer shall pay an
           additional amount in cash equal to U.S. $30,000,000 (THIRTY MILLION
           DOLLARS) to an account of the Sellers designated by the Sellers, by
           wire transfer of immediately available funds. In the event that this
           Agreement is validly terminated by (x) Buyer pursuant to Section
           7.01(b) (but only if the order, decree, ruling or other action issued
           or taken by such Governmental Entity is of a non-regulatory nature
           (which, for purposes hereof, shall mean that such order, decree,
           ruling or other action does not arise out of, relate to or concern
           antitrust, competition or telecommunications matters)) or Sections
           7.01(d), (i) or (j) hereof, or (y) Parent or the Sellers pursuant to
           Sections 7.01(b) (but only if the order, decree, ruling or other
           action issued or taken by such Governmental Entity is of a


                                       3

           non-regulatory nature (which, for purposes hereof, shall mean that
           such order, decree, ruling or other action does not arise out of,
           relate to or concern antitrust, competition or telecommunications
           matters)) or Sections 7.01(e) or (g), then the Sellers shall pay to
           Buyer promptly (but in any event within ten (10) Business Days)
           following such termination all amounts previously paid by Buyer to
           the Sellers pursuant to this Section 5.01(f). In addition, in the
           event that this Agreement is validly terminated by Buyer pursuant to
           Section 7.01(k) hereof on or before the Deposit Return Date, then the
           Sellers shall pay to Buyer promptly (but in any event within ten (10)
           Business Days) following such termination all amounts previously paid
           by Buyer to the Sellers pursuant to this Section 5.01(f).
           Notwithstanding anything to the contrary in this Agreement, until all
           requisite regulatory approvals are obtained and the Closing shall
           have occurred, the Sellers shall continue to exercise full and
           exclusive control of the Companies and New Startel."

           (g) Section 5.08(d) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "Buyer, Parent and the Sellers shall cooperate with filing
           and prosecuting the Sale Motion and the Termination Fee Motion and
           obtaining entry of the Sale Order and the Termination Fee Order, and
           Parent and the Sellers shall deliver to Buyer prior to filing, and as
           early in advance as is practicable to permit adequate and reasonable
           time for Buyer and its counsel to review and comment, copies of all
           proposed pleadings, motions, notices, statements, schedules,
           applications, reports and other papers to be filed by Parent or the
           Sellers in connection with the Sale Motion or the Termination Fee
           Motion and the relief requested therein."

           (h) Section 5.08(e) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "The Sellers shall use all commercially reasonable efforts
           to seek and obtain prompt Bankruptcy Court approval of the Sale Order
           and the Termination Fee Order."

           (i) Section 5.14 of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "No Solicitation. Parent and each Seller shall not, and
           shall cause its officers, directors, employees, agents and
           representatives (collectively, the "Representatives") not to (i)
           solicit or initiate any inquiries regarding the submission of any
           Alternate Proposal, (ii) participate in any discussions or
           negotiations regarding, or furnish to any Person any information with
           respect to, any Alternate Proposal or (iii) enter into any agreement
           with respect to any Alternate Proposal or approve any Alternate
           Proposal. Upon execution of this Agreement, Parent and each Seller
           shall, and shall cause its Representatives to, immediately cease any


                                       4

           existing activities, discussions, or negotiations with any parties
           conducted heretofore with respect to any of the foregoing. Parent and
           the Sellers shall notify Buyer promptly (but in any event within 24
           hours) after receipt or occurrence of an Alternate Proposal. In
           addition, Parent and the Sellers shall promptly (but in any event
           within 24 hours) after receipt thereof, provide to Buyer copies of
           any written documentation received by Parent, the Sellers or their
           Representatives in connection with any such Alternate Proposal."

           (j) The Purchase Agreement is hereby amended to add the following as
Section 5.17:

                     "MCITB License. Notwithstanding anything to the contrary in
           this Agreement, neither Parent nor the Sellers will be required to
           effect the Closing unless and until MCI Telecomunicacoes do Brasil
           Ltda. ("MCITB") shall have received a license to provide multimedia
           communications services (Servico de Comunicacao Multimidia) in Brazil
           (the "SCM License") from ANATEL; provided, however, that for purposes
           of this Agreement, MCITB shall be deemed to have received the SCM
           License if Buyer, Parent and the Sellers enter into an arrangement
           reasonably satisfactory to Buyer, Parent and the Sellers that allows
           Parent and the Sellers lawfully to utilize Buyer's multimedia
           communications services license(s) in Brazil until such time as the
           SCM License is issued; provided further, however, that the failure of
           MCITB to receive the SCM License from ANATEL shall at no time give
           rise to a right of Parent or the Sellers to terminate this Agreement.
           Notwithstanding anything to the contrary in this Agreement, for
           purposes of Section 5.01(f), the failure to obtain the SCM License
           shall be deemed to be of a non-regulatory nature."

           (k) The Purchase Agreement is hereby amended to add the following as
Section 5.18:

                     "Termination Fee Order. Not later than April 21, 2004,
           Parent and the Sellers shall file a motion (the "Termination Fee
           Motion"), in form and substance reasonably acceptable to Buyer, with
           the Bankruptcy Court seeking approval and entry of an order (the
           "Termination Fee Order"), in form and substance reasonably acceptable
           to Buyer, approving the Termination Fee on the terms set forth in
           Section 7.02(b)."

           (l) Section 6.01(c) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "the Bankruptcy Court shall have entered the Sale Order, in
           form and substance reasonably acceptable to Buyer, which, among other
           things, shall have authorized and directed the Sellers to assign and
           transfer to Buyer the Shares free and clear of all Encumbrances and
           such Sale Order shall not be subject to any stay issued by the
           Bankruptcy Court or any other court of competent jurisdiction."


                                       5

           (m) Section 6.02(a) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "the Sellers shall have performed in all material respects
           all of their respective obligations hereunder required to be
           performed by them at or prior to the Closing Date;"

           (n) Section 7.01(f) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "[INTENTIONALLY OMITTED];"

           (o) Section 7.01(j) of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "by Buyer, if Parent or the Sellers breach the covenants
           contained in Section 5.08(e) or Section 5.14;"

           (p) Section 7.02 of the Purchase Agreement is hereby amended and
restated in its entirety to read as follows:

                     "Effect of Termination.

                     (a) Except as set forth in Section 7.01(b), if this
           Agreement is terminated pursuant to Section 7.01, this Agreement
           shall become void and of no effect with no liability on the part of
           any party (or any shareholder, director, officer, employee, agent,
           consultant, representative or Affiliate of such party) to the other
           party hereto; provided that nothing in this Section 7.02 shall (i)
           relieve Buyer or the Sellers of any liability for a breach of this
           Agreement prior to the date of termination or relieve either party
           from its obligation to make any payments to the extent provided in
           Section 5.01(f) or (ii) require the Sellers to return any payments
           theretofore made by Buyer other than in accordance with Section
           5.01(f) hereof; provided further that in the event that this
           Agreement is validly terminated pursuant to Section 7.01 hereof under
           circumstances where the Sellers are not required to return to Buyer
           any of the amounts specified in Section 5.01(f), then none of the
           parties hereto shall have any further liability hereunder (other than
           the obligations of Parent and the Sellers pursuant to Section
           7.01(b)). The damages recoverable by the non-breaching party shall
           include all attorneys' fees reasonably incurred by such party in
           connection with the transactions contemplated hereby. The provisions
           of Section 5.01(f), Section 7.01 and this Section 7.02, and of
           Article 8 and the Confidentiality Agreement shall survive any
           termination hereof pursuant to Section 7.01.


                                       6

                     (b) If at any time after the Bankruptcy Court enters the
           Termination Fee Order, (i)(A) the Buyer terminates this Agreement
           pursuant to Section 7.01(i) or (B) Parent or the Sellers terminate
           this Agreement pursuant to Section 7.01(g) and (ii) at any time prior
           to the date that is twelve (12) months after the date of such
           termination, Parent or the Sellers enter into an agreement with
           respect to, or consummate, an Alternate Proposal, then Parent or the
           Sellers shall promptly (and in any event within two (2) Business
           Days) pay to Buyer an amount equal to U.S. $12,200,000 (TWELVE
           MILLION, TWO HUNDRED THOUSAND DOLLARS) (the "Termination Fee") by
           wire transfer of immediately available funds."

           (q) Section 2 of Schedule 6.02(e) to the Purchase Agreement is hereby
amended and restated in its entirety to read as follows:

                     "Consents and Approvals. No consent, approval or
           authorization of, or declaration, filing or registration with, any
           Governmental Entity shall be required to be made or obtained by
           Embratel or any of its material Subsidiaries in connection with the
           execution, delivery and performance of this Agreement and the
           consummation of the transactions contemplated hereby, other than (i)
           compliance with any applicable requirements of Laws, rules and
           regulations governing antitrust or merger control matters, including,
           without limitation, the filing with CADE through ANATEL, (ii)
           compliance with any applicable requirements of Law governing
           telecommunications matters including, without limitation, the GTL and
           the GGP, and receipt of all requisite approvals of ANATEL, (iii)
           compliance with any applicable requirements of any securities or
           takeover Laws, whether domestic or foreign, including, without
           limitation, Article 254-A of the BCL and Rule 361 of March 5, 2002 of
           the CVM, (iv) compliance with any applicable requirements of the
           Central Bank of Brazil, (v) filings with the applicable Boards of
           Trade of amendments to the articles of association of each of the
           Companies in order to assign and transfer the Shares, and (vi)
           approval by the FCC in connection with the assignment to Buyer or
           termination of Embratel's authorization of the FCC under Section 214
           of the Communications Act of 1934, as amended."

           Section 2. Governing Law. This Second Amendment shall be governed by
and construed in accordance with the Law of the State of New York, without
regard to the conflicts of law rules of such state.

           Section 3. Captions. The captions herein are included for convenience
of reference only and shall be ignored in the construction or interpretation
hereof.

           Section 4. Counterparts; Effectiveness. This Second Amendment may be
signed in any number of counterparts, each of which shall be an original, with
the same effect as if the signatures thereto and hereto were upon the same
instrument. This Second Amendment shall become effective on the date of its
execution by the parties hereto in the City of New York.


                                       7

           Section 5. Effect of Amendment. Except as expressly amended by this
Second Amendment, the Purchase Agreement shall remain in full force and effect
as the same was in effect immediately prior to the effectiveness of this Second
Amendment. All references in the Purchase Agreement to "this Agreement" shall be
deemed to refer to the Purchase Agreement as amended by this Second Amendment.



                            [Signature Page Follows]






















                                       8

           IN WITNESS WHEREOF, the parties hereto have caused this Second
Amendment to be duly executed by their respective authorized officers as of the
day and year first above written.


                                   TELEFONOS DE MEXICO, S.A. DE C.V.


                                   By: /s/ Sergio Rodriguez Molleda
                                       ----------------------------------------
                                       Name: Sergio Rodriguez Molleda
                                       Title: Deputy General Counsel


                                   MCI, INC.
                                   (as successor in interest to WorldCom, Inc.)


                                   By: /s/ Anastasia D. Kelly
                                       ----------------------------------------
                                       Name: Anastasia D. Kelly
                                       Title: General Counsel


                                   MCI INTERNATIONAL, INC.

                                   By: /s/ Jennifer C. McGarey
                                       ----------------------------------------
                                       Name: Jennifer C. McGarey
                                       Title: Secretary


                                   MCI WORLDCOM INTERNATIONAL, INC.,

                                   By: /s/ Jennifer C. McGarey
                                       ----------------------------------------
                                       Name: Jennifer C. McGarey
                                       Title: Secretary


                                   MCI WORLDCOM BRAZIL LLC

                                   By: /s/ Jennifer C. McGarey
                                       ----------------------------------------
                                       Name: Jennifer C. McGarey
                                       Title: Secretary