SBC COMMUNICATIONS INC
S-4, 1998-06-05
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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      As filed with the Securities and Exchange Commission on June 5, 1998
                                              Registration No. 333-
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                      ------------------------------------
                                    FORM S-4

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                      ------------------------------------
                             SBC COMMUNICATIONS INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
<TABLE>
<CAPTION>
<S>                                <C>                            <C>
            DELAWARE                           6719                     43-1301883
(STATE OR OTHER JURISDICTION OF    (PRIMARY STANDARD INDUSTRIAL      (I.R.S. EMPLOYER
 INCORPORATION OR ORGANIZATION)    CLASSIFICATION CODE NUMBER)    IDENTIFICATION NUMBER)
</TABLE>
                                175 EAST HOUSTON
                          SAN ANTONIO, TEXAS 78205-2233
                                 (210) 821-4105
              (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
       INCLUDING AREA CODE, OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                      ------------------------------------
                                 JUDITH M. SAHM
                             SBC COMMUNICATIONS INC.
                                175 EAST HOUSTON
                          SAN ANTONIO, TEXAS 78205-2233
                                 (210) 821-4105
           (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
                   INCLUDING AREA CODE, OF AGENT FOR SERVICE)

                                                        Copies to:
                                          ------------------------------------
<TABLE>
<S>                          <C>                                 <C>                          <C>
  BENJAMIN F. STAPLETON              WAYNE A. WIRTZ                  THADDEUS J. MALIK         CHARLES W. MULANEY, JR.
   SULLIVAN & CROMWELL           SBC COMMUNICATIONS INC.           AMERITECH CORPORATION        SKADDEN, ARPS, SLATE,
    125 BROAD STREET                175 EAST HOUSTON               30 SOUTH WACKER DRIVE       MEAGHER & FLOM (ILLINOIS)
NEW YORK, NEW YORK 10004      SAN ANTONIO, TEXAS 78205-2233       CHICAGO, ILLINOIS 60606       333 WEST WACKER DRIVE
                                                                                               CHICAGO, ILLINOIS 60606
</TABLE>
                                          ------------------------------------
   APPROXIMATE  DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:  AS SOON AS
PRACTICABLE AFTER THE EFFECTIVE DATE OF THIS REGISTRATION STATEMENT.
                      ------------------------------------
   If the  securities  being  registered  on this  form  are  being  offered  in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box. |_|
   If this  form is filed to  register  additional  securities  for an  offering
pursuant to Rule 462(b) under the  Securities  Act,  check the following box and
list the Securities Act registration  statement number of the earlier  effective
registration statement for the same offering. |_| _________________
   If this form is a  post-effective  amendment  filed  pursuant  to Rule 462(d)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. |_| _______________________
                      ------------------------------------
<TABLE>
<CAPTION>
                                                  CALCULATION OF REGISTRATION FEE
====================================================================================================================================
                                                                  PROPOSED MAXIMUM
                                                                   OFFERING PRICE      ROPOSED MAXIMUM          AMOUNT OF
    TITLE OF EACH CLASS OF SECURITIES       AMOUNT TO BE            PER SHARE OF         AGGREGATE             REGISTRATION
            TO BE REGISTERED                 REGISTERED             COMMON STOCK       OFFERING PRICE              FEE
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                         <C>                   <C>                 <C>                      <C>
Common Stock, par value $1.00 per           1,449,647,026(2)            N/A            47,091,497,240(3)        13,891,991.69
share, together with Preferred Stock
Purchase Rights, if any (1)
====================================================================================================================================
<FN>
(1)  As of the date hereof,  preferred  stock purchase  rights are attached to and trade with the common stock,  par value $1.00 per
     share ("SBC Common Stock"), of SBC Communications  Inc., a Delaware corporation ("SBC"). The value attributable to such rights,
     if any, is reflected in the market price of SBC Common Stock.
(2)  Represents the maximum amount of SBC Common Stock  estimated to be issuable upon the  consummation of the merger (the "Merger")
     of SBC Delaware,  Inc., a Delaware  corporation and a wholly-owned  subsidiary of SBC, with and into Ameritech  Corporation,  a
     Delaware corporation ("Ameritech").
(3)  Pursuant to Rules 457(f)(1) and 457(c) under the Securities Act and solely for the purpose of calculating the registration fee,
     the proposed maximum aggregate  offering price is equal to the market value of the common stock,  $1.00 par value per share, of
     Ameritech  ("Ameritech Common Stock") to be canceled in the Merger and is based upon $42.75, the average of  the high and  low
     sale prices per share of Ameritech Common Stock on the New York Stock Exchange Composite Tape on June 1, 1998.
                                                ------------------------------------
</FN>
</TABLE>
   THE  REGISTRANT  HEREBY  AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT FILES
A FURTHER AMENDMENT WHICH SPECIFICALLY  STATES THAT THIS REGISTRATION  STATEMENT
WILL  THEREAFTER  BECOME  EFFECTIVE  IN  ACCORDANCE  WITH  SECTION  8(a)  OF THE
SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION  STATEMENT BECOMES EFFECTIVE ON
SUCH  DATE  AS THE  COMMISSION,  ACTING  PURSUANT  TO  SAID  SECTION  8(a),  MAY
DETERMINE.
================================================================================
<PAGE>

                              AMERITECH CORPORATION
                              30 South Wacker Drive
                             Chicago, Illinois 60606


                                                                       [o], 1998

Dear Shareowner:

    We  cordially  invite you to attend a special  meeting of  shareowners  (the
"Special   Meeting")   of   Ameritech   Corporation,   a  Delaware   corporation
("Ameritech"), which will be held on [o], 1998, at [o], local time, at [o].

    At the  Special  Meeting,  you  will be asked to  consider  and vote  upon a
proposal to adopt the  Agreement  and Plan of Merger,  dated as of May 10, 1998,
among Ameritech, SBC Communications Inc., a Delaware corporation ("SBC") and SBC
Delaware,  Inc., a Delaware  corporation  and a  wholly-owned  subsidiary of SBC
("Merger  Sub") (as such  agreement  may be amended,  supplemented  or otherwise
modified from time to time,  the "Merger  Agreement"),  pursuant to which Merger
Sub will be merged with and into  Ameritech  (the  "Merger") and Ameritech  will
become a wholly-owned  subsidiary of SBC. Upon consummation of the Merger,  each
share of common  stock,  $1.00 par value per  share,  of  Ameritech  ("Ameritech
Common  Stock") will be converted  into 1.316 (the  "Exchange  Ratio") shares of
common stock,  par value $1.00 per share, of SBC ("SBC Common Stock"),  together
with the appropriate number of preferred stock purchase rights attached thereto,
if any.

    The Board of Directors of Ameritech  has carefully  reviewed and  considered
the terms and conditions of the Merger.  In addition,  the Board of Directors of
Ameritech has received a written  opinion from its financial  advisor,  Goldman,
Sachs & Co., to the effect that, as of May 10, 1998,  the Exchange Ratio is fair
from a financial point of view to the holders of Ameritech Common Stock.

    AMERITECH'S  BOARD OF DIRECTORS HAS DETERMINED THAT THE MERGER AGREEMENT AND
THE TRANSACTIONS CONTEMPLATED THEREBY ARE FAIR TO, AND IN THE BEST INTERESTS OF,
AMERITECH AND ITS SHAREOWNERS.  ACCORDINGLY,  THE BOARD HAS UNANIMOUSLY APPROVED
THE  MERGER  AGREEMENT  AND THE  MERGER  AND  UNANIMOUSLY  RECOMMENDS  THAT  ALL
SHAREOWNERS VOTE FOR ADOPTION OF THE MERGER AGREEMENT.

    I urge you to review  and  consider  carefully  the  accompanying  Notice of
Special  Meeting of  Shareowners  and Joint  Proxy  Statement/Prospectus,  which
contain  information about Ameritech and SBC and describe the Merger and certain
other matters relating to the Merger.

    The  affirmative  vote  of  the  holders  of at  least  a  majority  of  the
outstanding  shares of Ameritech  Common Stock is necessary  for adoption of the
Merger  Agreement.  If the  Merger  Agreement  is  adopted  and  the  Merger  is
consummated,  you will be sent a letter of  transmittal  with  instructions  for
obtaining your shares of SBC Common Stock and cash in lieu of fractional  shares
of SBC Common  Stock.  If you hold share  certificates,  please do not send your
certificates  representing  Ameritech  Common  Stock  until  you  receive  these
materials.

    IT IS  IMPORTANT  THAT YOUR SHARES BE  REPRESENTED  AT THE SPECIAL  MEETING,
WHETHER OR NOT YOU PLAN TO ATTEND THE SPECIAL  MEETING IN PERSON AND  REGARDLESS
OF THE NUMBER OF SHARES YOU OWN.  TO MAKE SURE YOUR SHARES ARE  REPRESENTED,  WE
URGE YOU TO SUBMIT YOUR VOTING  INSTRUCTIONS  AS SOON AS POSSIBLE BY  TELEPHONE,
THROUGH THE INTERNET OR BY SIGNING,  DATING AND MAILING YOUR PROXY CARD. Failure
to submit your proxy  through any such method or to vote at the Special  Meeting
or any  abstention  will have the same effect as a vote  against the proposal to
adopt the Merger Agreement. Your prompt cooperation will be appreciated.

                                             Sincerely,



                                             Richard C. Notebaert
                                             Chairman of the Board, President
                                                and Chief Executive Officer





<PAGE>


                             SBC COMMUNICATIONS INC.
                                175 East Houston
                          San Antonio, Texas 78205-2233


                                                                       [o], 1998

To Our Shareowners:

    You are cordially  invited to attend a special  meeting of shareowners  (the
"Special Meeting") of SBC Communications  Inc., a Delaware  corporation ("SBC"),
to be held on [o], 1998, at [o], local time, at [o].

    At the  Special  Meeting,  you  will be asked to  consider  and vote  upon a
proposal to issue  shares of common  stock,  par value  $1.00 per share,  of SBC
("SBC Common Stock")  pursuant to the Agreement and Plan of Merger,  dated as of
May 10, 1998, among Ameritech Corporation, a Delaware corporation ("Ameritech"),
SBC and SBC Delaware, Inc., a Delaware corporation and a wholly owned subsidiary
of SBC  ("Merger  Sub")  (as such  agreement  may be  amended,  supplemented  or
otherwise modified from time to time, the "Merger Agreement"), pursuant to which
Merger Sub will be merged with and into Ameritech (the "Merger"),  and Ameritech
will  become  a  wholly-owned  subsidiary  of  SBC.  Upon  the  Merger  becoming
effective,  each share of common stock,  $1.00 par value per share, of Ameritech
("Ameritech  Common Stock") will be converted into 1.316 (the "Exchange  Ratio")
shares of SBC Common Stock,  together with the  appropriate  number of preferred
stock purchase  rights  attached  thereto,  if any. In addition,  at the Special
Meeting,  you will be asked to consider  proposals to amend the Bylaws of SBC to
provide  that the maximum  number of persons  that may serve as directors on the
Board of Directors of SBC be increased to 25 from 21 (the "Bylaw Amendment") and
to amend the Restated Certificate of Incorporation of SBC to increase the number
of shares of  authorized  SBC Common Stock to 10.0 billion from 7.0 billion (the
"Share Increase Proposal").

    The Board of Directors of SBC has  carefully  reviewed  and  considered  the
terms and conditions of the Merger.  In addition,  the Board of Directors of SBC
has received a written opinion from its financial advisor,  Salomon Brothers Inc
and Smith Barney  Inc.,  to the effect  that,  as of May 10, 1998,  the Exchange
Ratio is fair from a financial point of view to SBC.

    SBC'S BOARD OF DIRECTORS HAS  DETERMINED  THAT THE MERGER  AGREEMENT AND THE
TRANSACTIONS CONTEMPLATED THEREBY ARE FAIR TO, AND IN THE BEST INTERESTS OF, SBC
AND ITS SHAREOWNERS.  ACCORDINGLY, THE SBC BOARD OF DIRECTORS HAS AUTHORIZED AND
APPROVED THE MERGER  AGREEMENT AND THE MERGER AND  UNANIMOUSLY  RECOMMENDS  THAT
SHAREOWNERS  VOTE FOR  APPROVAL OF THE  ISSUANCE  OF SHARES OF SBC COMMON  STOCK
PURSUANT TO THE MERGER  AGREEMENT.  IN ADDITION,  SBC'S BOARD OF  DIRECTORS  HAS
UNANIMOUSLY  APPROVED BOTH THE BYLAW  AMENDMENT AND THE SHARE INCREASE  PROPOSAL
AND HAS  DETERMINED  THAT EACH OF THE  BYLAW  AMENDMENT  AND THE SHARE  INCREASE
PROPOSAL IS ADVISABLE AND RECOMMENDS THAT  SHAREOWNERS  VOTE FOR ADOPTION OF THE
BYLAW AMENDMENT AND THE SHARE INCREASE PROPOSAL.

    I urge you to review  and  consider  carefully  the  accompanying  Notice of
Special  Meeting of  Shareowners  and Joint  Proxy  Statement/Prospectus,  which
contain  information about Ameritech and SBC and describe the Merger and certain
other matters relating to the Merger.

    The affirmative  vote of the holders of at least a majority of the shares of
SBC Common  Stock  voting on the  proposal to issue  shares of SBC Common  Stock
pursuant  to  the  Merger  Agreement,  assuming  at  least  a  majority  of  the
outstanding  shares of SBC Common Stock are present at the Special  Meeting,  is
necessary for approval of the issuance of shares of SBC Common Stock pursuant to
the Merger Agreement. The affirmative vote of the holders of at least two-thirds
of the shares of SBC Common Stock issued and  outstanding on the record date for
determining  shareowners  entitled  to vote is  necessary  to  adopt  the  Bylaw
Amendment, and the affirmative vote of the holders of at least a majority of the
shares of SBC  Common  Stock  issued  and  outstanding  on the  record  date for
determining  shareowners  entitled  to vote is  necessary  to  adopt  the  Share
Increase Proposal.

    IN ORDER THAT YOUR SHARES MAY BE REPRESENTED AT THE SPECIAL MEETING, YOU ARE
URGED TO PROMPTLY COMPLETE,  SIGN, DATE AND RETURN THE ACCOMPANYING PROXY IN THE
ENCLOSED ENVELOPE, WHETHER OR NOT YOU PLAN TO ATTEND THE





<PAGE>



SPECIAL  MEETING.  FAILURE TO VOTE ON THE BYLAW AMENDMENT AND THE SHARE INCREASE
PROPOSAL OR ABSTENTIONS WITH RESPECT TO SUCH PROPOSALS WILL HAVE THE SAME EFFECT
AS A VOTE AGAINST THE BYLAW  AMENDMENT  AND THE SHARE  INCREASE  PROPOSAL.  Your
prompt cooperation will be appreciated.

                                             Sincerely,



                                             Edward E. Whitacre, Jr.
                                             Chairman of the Board
                                               and Chief Executive Officer


<PAGE>


                              AMERITECH CORPORATION
                              30 SOUTH WACKER DRIVE
                             CHICAGO, ILLINOIS 60606




                 ----------------------------------------------
                    NOTICE OF SPECIAL MEETING OF SHAREOWNERS
                             TO BE HELD ON [O], 1998
                 ----------------------------------------------


To the Shareowners of Ameritech Corporation:

    NOTICE IS HEREBY GIVEN that a special meeting of shareowners  (including any
adjournments  or  postponements  thereof,  the  "Special  Meeting") of Ameritech
Corporation, a Delaware corporation ("Ameritech"), will be held on [o], 1998, at
[o],  local time, at [o]. The purpose of the Special  Meeting is to consider and
vote upon the following matters:

         1. A proposal to adopt the  Agreement  and Plan of Merger,  dated as of
    May 10, 1998 (as such  agreement may be amended,  supplemented  or otherwise
    modified from time to time, the "Merger  Agreement"),  among Ameritech,  SBC
    Communications Inc., a Delaware corporation ("SBC"), and SBC Delaware,  Inc.
    a Delaware corporation and a wholly-owned  subsidiary of SBC ("Merger Sub"),
    pursuant  to which  Merger Sub will be merged (the  "Merger")  with and into
    Ameritech and Ameritech will become a  wholly-owned  subsidiary of SBC. Upon
    the Merger becoming  effective,  each share of common stock, $1.00 par value
    per share, of Ameritech  ("Ameritech Common Stock"),  will be converted into
    1.316 shares of common stock,  par value $1.00 per share,  of SBC,  together
    with the  appropriate  number of preferred  stock purchase  rights  attached
    thereto, if any.

         2. Such  other  business  related to the  proposal  to adopt the Merger
    Agreement  as  may  properly   come  before  the  Special   Meeting  or  any
    adjournments or postponements thereof.

    Adoption  of the  Merger  Agreement  requires  the  affirmative  vote of the
holders  of at  least  a  majority  of the  shares  of  Ameritech  Common  Stock
outstanding  on the record  date.  Notwithstanding  shareowner  adoption  of the
Merger Agreement, Ameritech reserves the right to abandon the Merger at any time
prior to the  consummation  thereof,  subject to the terms and conditions of the
Merger Agreement.

    The Board of Directors of Ameritech  has fixed the close of business on [o],
1998, as the record date for the determination of shareowners entitled to notice
of, and to vote at, the Special  Meeting.  Only shareowners of record as of such
time will be entitled to notice of, and to vote at, the Special Meeting.

    A form of  proxy  and a Joint  Proxy  Statement/Prospectus  containing  more
detailed information with respect to the matters to be considered at the Special
Meeting  (including a copy of the Merger Agreement  attached as Annex A thereto)
accompany and form a part of this notice.

    If you are a  shareowner  of  record as of the  record  date and you plan to
attend the Special  Meeting,  please keep the admission  ticket and map that are
attached  to the form of proxy sent to you with this  notice and the Joint Proxy
Statement/Prospectus.  Please  also  check  the box on the  form of  proxy  that
indicates  that you plan to attend  the  meeting.  If your  shares are held by a
broker or a bank and you do not receive an admission ticket,  please bring proof
of your ownership in order to be admitted to the Special Meeting.

    Whether or not you plan to attend the Special Meeting , it is important that
you read the  accompanying  materials  carefully and vote your shares as soon as
possible.  Record  holders of  Ameritech  Common  Stock may submit  their voting
instructions  by  dialing  toll free  1-800-_______  or  through  the  Internet.
Instructions  for using these services are set forth on the enclosed proxy card.
Of course, you also may submit your voting instructions by completing,  signing,
dating and  returning  the  accompanying  proxy in the enclosed  self-addressed,
postage-paid  envelope.  If you attend the Special  Meeting and desire to revoke
your proxy in writing and vote in person,  you may do so. In any event,  a proxy
may be revoked in writing at any time before it is exercised.

                               ------------------

<PAGE>


    THE BOARD OF  DIRECTORS  OF AMERITECH  HAS  UNANIMOUSLY  APPROVED THE MERGER
AGREEMENT AND UNANIMOUSLY  RECOMMENDS THAT  SHAREOWNERS VOTE FOR ADOPTION OF THE
MERGER AGREEMENT.

                                             By Order of the Board of Directors,



                                             Deidra D. Gold
                                             Secretary
Chicago, Illinois
[o], 1998


                    THE INFORMATION AGENT FOR THE MERGER IS:
                     SHAREHOLDER COMMUNICATIONS CORPORATION
                           17 STATE STREET, 27TH FLOOR
                            NEW YORK, NEW YORK 10004
                          CALL TOLL FREE 1-800-________
                    ----------------------------------------




- --------------------------------------------------------------------------------
:                            YOUR VOTE IS IMPORTANT                            :
:                    PLEASE SUBMIT YOUR VOTE BY TELEPHONE,                     :
:            THROUGH THE INTERNET OR BY RETURNING YOUR PROXY BY MAIL           :
- --------------------------------------------------------------------------------






<PAGE>


                             SBC COMMUNICATIONS INC.
                                175 EAST HOUSTON
                            SAN ANTONIO, TEXAS 78205




                 ----------------------------------------------
                    NOTICE OF SPECIAL MEETING OF SHAREOWNERS
                             TO BE HELD ON [O], 1998
                 ----------------------------------------------



To the Shareowners of SBC:

    NOTICE IS HEREBY GIVEN that a special meeting of shareowners  (including any
adjournments  or   postponements   thereof,   the  "Special   Meeting")  of  SBC
Communications Inc., a Delaware corporation ("SBC"),  will be held on [o], 1998,
at [o],  local time,  at [o]. The purpose of the Special  Meeting is to consider
and vote upon the following matters:

         1. A proposal to approve the  issuance of shares of common  stock,  par
    value $1.00 per share, of SBC ("SBC Common Stock") pursuant to the Agreement
    and Plan of Merger, dated as of May 10, 1998, among Ameritech Corporation, a
    Delaware corporation, SBC and SBC Delaware, Inc., a Delaware corporation and
    a  wholly-owned  subsidiary of SBC ("Merger  Sub") (as such agreement may be
    amended,  supplemented or otherwise  modified from time to time, the "Merger
    Agreement"), pursuant to which Merger Sub will be merged (the "Merger") with
    and into Ameritech and Ameritech  will become a  wholly-owned  subsidiary of
    SBC. Upon the Merger becoming  effective,  each share of common stock, $1.00
    par value per share,  of Ameritech,  will be converted  into 1.316 shares of
    common  stock,  par value  $1.00 per  share,  of SBC ("SBC  Common  Stock"),
    together with the  appropriate  number of preferred  stock  purchase  rights
    attached thereto, if any.

         2. A proposal to adopt an  amendment  to Article II,  Section 1, of the
    Bylaws of SBC to provide  that the maximum  number of persons that may serve
    as directors  on the Board of  Directors of SBC be increased to  twenty-five
    (25) from twenty-one (21) (the "Bylaw Amendment").

         3. A proposal to adopt an  amendment  to the  Restated  Certificate  of
    Incorporation  of SBC to  increase  the number of shares of  authorized  SBC
    Common  Stock  to  10.0  billion  from  7.0  billion  (the  "Share  Increase
    Proposal").

         4. Such  other  business  related  to the  foregoing  proposals  as may
    properly   come  before  the  Special   Meeting  or  any   adjournments   or
    postponements thereof.

    Approval of the proposal to issue shares of SBC Common Stock pursuant to the
Merger  Agreement  requires  the  affirmative  vote of the holders of at least a
majority  of the  shares of SBC  Common  Stock  voting on such  proposal  at the
Special Meeting,  assuming at least a majority of outstanding shares are present
at the  Special  Meeting.  The  affirmative  vote  of the  holders  of at  least
two-thirds  of the shares of SBC Common  Stock  issued  and  outstanding  on the
record date for determining  shareowners  entitled to vote is necessary to adopt
the Bylaw Amendment.  The affirmative vote of the holders of at least a majority
of the  shares of SBC  Common  Stock  issued  and  outstanding  for  determining
shareowners entitled to vote is necessary to adopt the Share Increase Proposal.

    Notwithstanding  shareowner approval of the issuance of shares of SBC Common
Stock  pursuant to the Merger  Agreement,  SBC reserves the right to abandon the
Merger at any time prior to the consummation  thereof,  subject to the terms and
conditions of the Merger Agreement.

    The Board of Directors of SBC has fixed the close of business on [o],  1998,
as the record date for the  determination of shareowners  entitled to notice of,
and to vote at, the Special Meeting, and only shareowners of record at such time
will be entitled to notice of, and to vote at, the Special Meeting.


<PAGE>


    A form of  proxy  and a Joint  Proxy  Statement/Prospectus  containing  more
detailed information with respect to the matters to be considered at the Special
Meeting  (including a copy of the Merger Agreement  attached as Annex A thereto)
accompany and form a part of this notice.

    Whether  or not you plan to attend  the  Special  Meeting,  please  promptly
complete,  sign,  date  and  return  the  accompanying  proxy  in  the  enclosed
self-addressed,  stamped envelope.  If you attend the Special Meeting and desire
to revoke your proxy in writing and vote in person, you may do so. In any event,
a proxy may be revoked in writing at any time before it is exercised.

                               ------------------


    THE  BOARD OF  DIRECTORS  OF SBC HAS  AUTHORIZED  AND  APPROVED  THE  MERGER
AGREEMENT AND THE MERGER AND UNANIMOUSLY  RECOMMENDS THAT  SHAREOWNERS  VOTE FOR
APPROVAL OF THE  ISSUANCE OF SHARES OF SBC COMMON  STOCK  PURSUANT TO THE MERGER
AGREEMENT.  IN ADDITION,  SBC'S BOARD OF DIRECTORS HAS UNANIMOUSLY APPROVED BOTH
THE BYLAW AMENDMENT AND THE SHARE INCREASE PROPOSAL AND HAS DETERMINED THAT EACH
OF THE  BYLAW  AMENDMENT  AND THE  SHARE  INCREASE  PROPOSAL  IS  ADVISABLE  AND
RECOMMENDS  THAT  SHAREOWNERS  VOTE FOR ADOPTION OF THE BYLAW  AMENDMENT AND THE
SHARE INCREASE PROPOSAL.

                                             By Order of the Board of Directors,



                                             Judith M. Sahm
                                             Vice President and Secretary
San Antonio, Texas
[o], 1998

                    THE INFORMATION AGENT FOR THE MERGER IS:
                     SHAREHOLDER COMMUNICATIONS CORPORATION
                          17 STATE STREET, 27TH FLOOR
                            NEW YORK, NEW YORK 10004
                          CALL TOLL FREE 1-800 _______



- --------------------------------------------------------------------------------
:                             YOUR VOTE IS IMPORTANT                           :
:                    PLEASE SIGN, DATE AND RETURN YOUR PROXY                   :
- --------------------------------------------------------------------------------







<PAGE>

RED HERRING TEXT

INFORMATION   CONTAINED  HEREIN  IS  SUBJECT  TO  COMPLETION  OR  AMENDMENT.   A
REGISTRATION  STATEMENT  RELATING  TO THESE  SECURITIES  HAS BEEN FILED WITH THE
SECURITIES  AND EXCHANGE  COMMISSION.  THESE  SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION  STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE  AN  OFFER  TO  SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN ANY STATE IN WHICH SUCH OFFER,  SOLICITATION  OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.


<PAGE>
         [SBC LOGO]                                       [AMERITECH LOGO]
                              JOINT PROXY STATEMENT
                             ----------------------
                             SBC COMMUNICATIONS INC.
                                   PROSPECTUS
                             ----------------------
         This  Joint  Proxy  Statement/Prospectus  is  being  furnished  to  the
shareowners  of SBC  Communications  Inc., a Delaware  corporation  ("SBC"),  in
connection  with the  solicitation  of proxies by the Board of  Directors of SBC
(the "SBC Board") from holders of outstanding  shares of common stock, par value
$1.00 per share,  of SBC ("SBC Common  Stock"),  for use at a special meeting of
shareowners  of SBC to be  held  on  [o],  1998,  at  [o],  local  time,  at [o]
(including  any  adjournments  or  postponements   thereof,   the  "SBC  Special
Meeting"). This Joint Proxy  Statement/Prospectus is also being furnished to the
shareowners of Ameritech Corporation, a Delaware corporation  ("Ameritech"),  in
connection  with the  solicitation  of  proxies  by the  Board of  Directors  of
Ameritech (the "Ameritech  Board") from holders of outstanding  shares of common
stock, $1.00 par value per share, of Ameritech  ("Ameritech Common Stock"),  for
use at a special meeting of shareowners of Ameritech to be held on [o], 1998, at
[o], local time, at [o] (including any  adjournments or  postponements  thereof,
the "Ameritech Special Meeting" and, together with the SBC Special Meeting,  the
"Special Meetings").

         At the Ameritech  Special  Meeting,  shareowners  of Ameritech  will be
asked to consider and vote upon a proposal (the "Merger  Proposal") to adopt the
Agreement and Plan of Merger, dated as of May 10, 1998, among Ameritech, SBC and
SBC Delaware,  Inc., a Delaware corporation and a wholly owned subsidiary of SBC
("Merger  Sub") (as such  agreement  may be amended,  supplemented  or otherwise
modified from time to time, the "Merger Agreement"). At the SBC Special Meeting,
shareowners of SBC will be asked to approve the issuance of shares of SBC Common
Stock  pursuant to the Merger  Agreement.  The Merger  Agreement  is attached as
Annex A to this  Joint  Proxy Statement/Prospectus and is incorporated herein by
reference. In addition, at the SBC Special Meeting, shareowners of SBC will also
be asked to consider  proposals to amend the Bylaws of SBC (the "SBC Bylaws") to
provide  that the maximum  number of persons  that may serve as directors on the
SBC Board be  increased to 25 from 21 (the "Bylaw  Amendment")  and to amend the
Restated Certificate of Incorporation of SBC (the "SBC Restated Certificate") to
increase  the number of shares of  authorized  SBC Common  Stock to 10.0 billion
from 7.0 billion (the "Share Increase Proposal").  See "The Bylaw Amendment" and
"The Share Increase Proposal."

         The Merger  Agreement  provides for the merger (the "Merger") of Merger
Sub with and into Ameritech,  with Ameritech being the surviving  corporation in
the Merger (sometimes  referred to in this Joint Proxy  Statement/Prospectus  as
the "Surviving Corporation") and becoming a wholly owned subsidiary of SBC. Upon
the Merger becoming  effective,  each share of Ameritech Common Stock issued and
outstanding  immediately  prior to such time (other than (i) shares of Ameritech
Common  Stock that are owned by SBC,  Merger Sub or any other direct or indirect
subsidiary  of SBC or (ii) shares of  Ameritech  Common  Stock that are owned by
Ameritech or any direct or indirect subsidiary of Ameritech, in the case of each
of (i) and (ii) not held on behalf  of third  parties  (collectively,  "Excluded
Ameritech  Common  Stock")) will be converted into 1.316 (the "Exchange  Ratio")
shares of SBC Common Stock.  See "The Merger -- Terms of the Merger." Each share
of SBC  Common  Stock  issued in the  Merger  will  have  attached  thereto  the
appropriate  number of preferred  stock purchase rights of SBC in the event that
at the time shares of SBC Common  Stock are  distributed  pursuant to the Merger
Agreement preferred stock purchase rights are attached to the outstanding shares
of SBC Common Stock. See "Description of SBC Capital Stock -- Description of SBC
Rights."

         On January 4, 1998, SBC announced that it had entered into an agreement
to acquire Southern New England  Telecommunications  Corporation,  a Connecticut
corporation  ("SNET"),  which is expected to close prior to the end of 1998.  In
addition  to the Merger,  SBC's  pending  acquisition  of SNET is  reflected  in
certain of the pro forma financial  information presented herein. See "Unaudited
Pro Forma Combined Condensed Financial Statements."

         SBC has filed a Registration  Statement on Form S-4 (including exhibits
and amendments thereto, the "Registration Statement") pursuant to the Securities
Act of 1933, as amended (the "Securities  Act"),  covering the approximately ___
shares of SBC Common Stock (and any accompanying  participating  preferred stock
purchase  rights of SBC) issuable upon  consummation  of the Merger.  This Joint
Proxy  Statement/Prospectus  constitutes  the  Proxy  Statement  of both SBC and
Ameritech  relating to the  solicitation of proxies for use at their  respective
Special  Meetings and the  Prospectus of SBC in connection  with the issuance of
SBC  Common  Stock   pursuant  to  the  Merger   Agreement.   This  Joint  Proxy
Statement/Prospectus  and the accompanying  proxy cards are first being provided
to shareowners of Ameritech and SBC on or about [o], 1998.

         The Rights  Agreement,  dated as of  January  27,  1989 and  amended on
August 5, 1992 and June 15, 1994 (the "SBC Rights  Agreement"),  between SBC and
The Bank of New York, as Rights Agent, and the SBC Rights (as defined below) are
scheduled  to expire  by their  terms on  January  27,  1999  (the  "SBC  Rights
Expiration Date"). As of the date of this Joint Proxy Statement/Prospectus,  SBC
has not  determined  whether it will enter into an  amendment  of the SBC Rights
Agreement or a new rights  agreement which would have the effect that the rights
to purchase Series A Junior  Participating  Preferred Stock, par value $1.00 per
share,  of SBC (the "SBC  Rights")  currently  outstanding  under the SBC Rights
Agreement would continue to be outstanding after the SBC Rights Expiration Date.
If the SBC Rights or
<PAGE>


similar rights ("SBC  Substitute  Rights") are outstanding at the time shares of
SBC Common Stock are issued pursuant to the Merger Agreement, such shares of SBC
Common  Stock will have  attached  the  appropriate  number of SBC Rights or SBC
Substitute  Rights.  If no such rights are outstanding at the time shares of SBC
Common  Stock are issued  pursuant  to the Merger  Agreement,  no rights will be
attached to such shares of SBC Common Stock.


 THE SECURITIES TO BE ISSUED PURSUANT TO THIS JOINT PROXY STATEMENT/PROSPECTUS
    HAVE  NOT BEEN  APPROVED  OR DISAPPROVED BY THE  SECURITIES AND EXCHANGE
      COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
       AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED
          UPON THE ACCURACY OR ADEQUACY OF THIS JOINT PROXY STATEMENT/
                 PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY
                             IS A CRIMINAL OFFENSE.

         The date of this Joint Proxy Statement/Prospectus is [o], 1998





































                                       ii
<PAGE>


                              AVAILABLE INFORMATION

    Each of SBC and Ameritech is subject to the  informational  requirements  of
the Securities  Exchange Act of 1934, as amended (the "Exchange  Act"),  and, in
accordance therewith, files reports, proxy statements and other information with
the  Securities  and  Exchange  Commission  (the  "SEC").  The  reports,   proxy
statements and other  information filed by SBC and Ameritech with the SEC can be
inspected  and copied at the SEC's  public  reference  room located at Judiciary
Plaza,  450 Fifth Street,  N.W., Room 1024,  Washington,  D.C. 20549, and at the
public  reference  facilities in the SEC's regional  offices located at: 7 World
Trade Center, 13th Floor, New York, New York 10048, and Suite 1400, Northwestern
Atrium Center, 500 West Madison Street, Chicago,  Illinois 60661. Copies of such
material can be obtained at prescribed  rates by writing to the  Securities  and
Exchange   Commission,   Public  Reference  Section,  450  Fifth  Street,  N.W.,
Washington, D.C. 20549. The SEC maintains a Website that contains reports, proxy
and information statements and other information regarding registrants that file
electronically  with the SEC, which registrants  include SBC and Ameritech.  The
address of such site is  http://www.sec.gov.  The shares of SBC Common Stock and
Ameritech  Common Stock are listed on the New York Stock  Exchange (the "NYSE"),
the Pacific Exchange (the "PSE"), and the Chicago Stock Exchange ("CSE") and the
shares of Ameritech  Common  Stock are also listed on the Boston Stock  Exchange
(the "BSE") and the Philadelphia Stock Exchange ("PHLX").  As such, the periodic
reports,  proxy statements and other  information  filed with the SEC by SBC and
Ameritech  may be inspected  at the offices of the NYSE,  20 Broad  Street,  New
York,  New York 10005,  the offices of the PSE, 301 Pine Street,  San Francisco,
California 94104, and the offices of the CSE, 440 South LaSalle Street, Chicago,
Illinois  60605 and, in addition,  in the case of Ameritech,  the offices of the
PHLX,  1900 Market Street,  Philadelphia,  Pennsylvania  19103 and the BSE, 38th
Floor, One Boston Place, Boston, Massachusetts 02108.

    This  Joint  Proxy   Statement/Prospectus   does  not  contain  all  of  the
information  set forth in the  Registration  Statement  covering the  securities
offered hereby which SBC has filed with the SEC,  certain portions of which have
been  omitted  pursuant to the rules and  regulations  of the SEC,  and to which
portions  reference is hereby made for further  information with respect to SBC,
Ameritech  and  the  securities  offered  hereby.  Statements  contained  herein
concerning  any documents are not  necessarily  complete and, in each  instance,
reference  is made to the  copies of such  documents  filed as  exhibits  to the
Registration Statement. Each such statement is qualified in its entirety by such
reference.


                INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

    THIS JOINT PROXY  STATEMENT/PROSPECTUS  INCORPORATES BY REFERENCE  DOCUMENTS
WHICH ARE NOT PRESENTED HEREIN OR DELIVERED HEREWITH. DOCUMENTS RELATING TO SBC,
EXCLUDING  EXHIBITS TO SUCH  DOCUMENTS  UNLESS SUCH  EXHIBITS  ARE  SPECIFICALLY
INCORPORATED  HEREIN BY REFERENCE,  ARE AVAILABLE WITHOUT CHARGE UPON REQUEST TO
MANAGER-EXTERNAL  REPORTING,  SBC  COMMUNICATIONS  INC.,  175 EAST HOUSTON,  SAN
ANTONIO,   TEXAS   78205-2233.   TELEPHONE   REQUESTS   MAY   BE   DIRECTED   TO
MANAGER-EXTERNAL  REPORTING AT (210) 351-3049.  DOCUMENTS RELATING TO AMERITECH,
EXCLUDING  EXHIBITS TO SUCH  DOCUMENTS  UNLESS SUCH  EXHIBITS  ARE  SPECIFICALLY
INCORPORATED  HEREIN BY REFERENCE,  ARE AVAILABLE WITHOUT CHARGE UPON REQUEST TO
MANAGER-SHAREHOLDER  RELATIONS,  AMERITECH  CORPORATION,  30 SOUTH WACKER DRIVE,
35TH FLOOR,  CHICAGO,  ILLINOIS  60606.  TELEPHONE  REQUESTS  MAY BE DIRECTED TO
AMERITECH  INVESTOR  RELATIONS  AT (312)  750-5353.  IN ORDER TO  ENSURE  TIMELY
DELIVERY OF ANY OF SUCH  DOCUMENTS  IN ADVANCE OF THE SPECIAL  MEETINGS TO WHICH
THIS JOINT PROXY  STATEMENT/PROSPECTUS  RELATES,  ANY REQUEST  SHOULD BE MADE BY
[O], 1998.

    The  following  documents  filed with the SEC by SBC (File No.  1-8610)  are
incorporated  herein by reference:  (a) SBC's Annual Report on Form 10-K for the
year ended December 31, 1997 (the "1997 SBC 10-K");  (b) SBC's Quarterly  Report
on Form 10-Q for the  quarterly  period ended March 31, 1998;  (c) SBC's Current
Reports on Form 8-K,  filed on January  5,  1998,  February  5, 1998 and May 11,
1998; (d) SBC's proxy statement for its 1998 annual meeting of shareowners;  (e)
the description of SBC Common Stock contained in SBC's Registration Statement on
Form 10, dated November 15, 1983; and (f) SBC's  Registration  Statement on Form
8-A, dated February 9, 1989, together with amendments thereto.

    The following  documents  filed with the SEC by Ameritech  (File No. 1-8612)
are incorporated herein by reference: (a) Ameritech's Annual Report on Form 10-K
for the fiscal year ended  December 31, 1997 (the "1997  Ameritech  10-K");  (b)
Ameritech's  Quarterly  Report on Form 10-Q for the quarterly period ended March
31, 1998; (c)  Ameritech's  Current Reports on Form 8-K, filed January 13, 1998,
April 14, 1998 and May 11, 1998; (d)  Ameritech's  proxy  statement for its 1998
annual meeting of  shareowners;  (e) the  description of Ameritech  Common Stock
contained

                                      iii

<PAGE>


in Ameritech's  Registration  Statement on Form 10, dated November 16, 1983; and
(f)  Ameritech's  Registration  Statement on Form 8-A,  dated December 21, 1988,
together with amendments thereto.

    The  following  documents  filed with the SEC by SNET (File No.  1-9157) are
incorporated herein by reference:  (a) SNET's Annual Report on Form 10-K for the
fiscal year ended  December 31, 1997; (b) SNET's  Quarterly  Report on Form 10-Q
for the quarterly  period ended March 31, 1998;  (c) SNET's  Current  Reports on
Form 8-K, filed January 5, 1998,  January 27, 1998, March 31, 1998 and April 27,
1998;   and  (d)  SNET's  proxy   statement  for  its  1998  annual  meeting  of
shareholders.

    All  documents  filed by either SBC,  Ameritech or SNET  pursuant to Section
13(a),  13(c),  14 or 15(d) of the Exchange Act  subsequent  to the date of this
Joint Proxy  Statement/Prospectus  and prior to the date of the Special Meetings
will be deemed to be  incorporated  herein by reference  and to be a part hereof
from the date of filing of such document. Any statement contained herein or in a
document  incorporated or deemed to be incorporated  herein by reference will be
deemed to be modified or  superseded  for  purposes  hereof to the extent that a
statement contained herein or in any other subsequently filed document which is,
or is deemed to be, incorporated herein by reference modifies or supersedes such
statement.  Any such  statement so modified or superseded  will not be deemed to
constitute a part hereof, except as so modified or superseded.

    No  person  is   authorized  to  give  any   information   or  to  make  any
representations not contained in this Joint Proxy Statement/Prospectus or in the
documents  incorporated  herein by reference in connection with the solicitation
and the  offering  made  hereby  and,  if  given or made,  such  information  or
representation  should not be relied  upon as having been  authorized  by SBC or
Ameritech. This Joint Proxy Statement/Prospectus does not constitute an offer to
sell, or a solicitation of an offer to purchase,  the securities offered by this
Joint  Proxy  Statement/Prospectus,  or the  solicitation  of a proxy  from  any
person,  in any  jurisdiction  in  which  it is  unlawful  to make  such  offer,
solicitation  of an offer or proxy  solicitation.  Neither the  delivery of this
Joint Proxy  Statement/Prospectus  nor any  distribution  of the securities made
under  this  Joint  Proxy   Statement/Prospectus   hereunder  will,   under  any
circumstances,  create  an  implication  that  there  has been no  change in the
affairs   of  SBC  or   Ameritech   since   the   date  of  this   Joint   Proxy
Statement/Prospectus  other  than as set  forth  in the  documents  incorporated
herein by reference.





























                                       iv
<PAGE>

<TABLE>
<CAPTION>

                                TABLE OF CONTENTS

<S>                                                                                     <C>
AVAILABLE INFORMATION....................................................................iii
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE........................................iii
SUMMARY....................................................................................1
   The Companies...........................................................................1
   Recent Developments.....................................................................2
   The Special Meetings....................................................................2
   The Merger..............................................................................2
   Interests of Certain Persons in the Merger.............................................10
   Dissenters' Rights of Appraisal........................................................10
   Accounting Treatment...................................................................11
   Certain Federal Income Tax Consequences of the Merger..................................11
   The Bylaw Amendment....................................................................11
   The Share Increase Proposal............................................................11
   Certain Effects of the Merger on the Rights of Holders of Ameritech Common Stock.......11
COMPARATIVE STOCK PRICES..................................................................12
SELECTED HISTORICAL AND UNAUDITED PRO FORMA COMBINED FINANCIAL DATA.......................13
THE SPECIAL MEETINGS......................................................................16
   General................................................................................16
      SBC.................................................................................16
      Ameritech...........................................................................16
   Date, Place and Time...................................................................16
   Record Dates...........................................................................16
      SBC.................................................................................16
      Ameritech...........................................................................16
   Vote Required..........................................................................17
      SBC.................................................................................17
      Ameritech...........................................................................17
   Voting and Revocation of Proxies.......................................................18
   Solicitation of Proxies................................................................19
THE COMPANIES.............................................................................19
   SBC....................................................................................19
   Ameritech..............................................................................19
   Merger Sub.............................................................................20
RECENT DEVELOPMENTS.......................................................................20
   Ameritech..............................................................................20
THE MERGER................................................................................20
   General................................................................................20
   Background of the Merger...............................................................21
   Reasons for the Merger; Recommendations of the Boards of Directors.....................22
      SBC.................................................................................22
      Ameritech...........................................................................24
   Opinions of Financial Advisors.........................................................26
      SBC.................................................................................26
      Ameritech...........................................................................32
   Cautionary Statement Concerning Forward-Looking Statements.............................36
   Terms of the Merger....................................................................36
   Closing; Effective Time................................................................37
   Exchange of Ameritech Common Stock for Shares of SBC Common Stock......................37
      Procedures..........................................................................37
      Lost, Stolen or Destroyed Certificates..............................................38
      Distributions with Respect to Unexchanged Shares; Voting............................38
   Representations and Warranties.........................................................39
   Certain Covenants......................................................................39
      Interim Operations..................................................................39
      Acquisition Proposals...............................................................41
      The Special Meetings................................................................42
      Pooling of Interests................................................................43
   Certain Regulatory Filings and Approvals...............................................43
      HSR.................................................................................44
      FCC.................................................................................44
      State PUCs..........................................................................44
      Illinois Commerce Commission........................................................44
      Public Utility Commission of Ohio...................................................45
      PUC Approvals Regarding Intrastate Interexchange Service............................45
      Municipal Cable Franchises..........................................................45





<PAGE>



      European Regulatory Approvals.......................................................45
   Stock Exchange Listing and De-listing..................................................46
   Employee Benefits......................................................................46
      Stock Options.......................................................................46
      Benefit Plans.......................................................................46
   Expenses...............................................................................47
   Indemnification; Directors' and Officers' Insurance....................................47
   Dividends..............................................................................47
   SBC Board Following the Merger.........................................................47
   Conditions.............................................................................47
   Termination............................................................................49
   Certain Termination Fees   ............................................................50
   Resale of SBC Common Stock.............................................................51
   Dissenters' Rights of Appraisal........................................................52
   Interests of Certain Persons in the Merger.............................................52
ACCOUNTING TREATMENT......................................................................55
CERTAIN FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER.....................................55
   General................................................................................55
   Fractional Shares......................................................................56
THE BYLAW AMENDMENT.......................................................................56
THE SHARE INCREASE PROPOSAL...............................................................57
UNAUDITED PRO FORMA COMBINED
CONDENSED FINANCIAL STATEMENTS............................................................59
NOTES TO UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS......................66
DESCRIPTION OF SBC CAPITAL STOCK..........................................................68
   SBC Common Stock.......................................................................68
   SBC Preferred Stock....................................................................68
   Description of SBC Rights..............................................................69
COMPARISON OF CERTAIN RIGHTS OF SHAREOWNERS
OF SBC AND AMERITECH......................................................................70
   General................................................................................70
   Size and Classification of the Board of Directors......................................71
   Removal of Directors...................................................................71
   Action by Written Consent..............................................................71
   Meetings of Shareowners; Quorum and Voting.............................................72
   Shareowner Proposals and Shareowner Nominations of Directors...........................72
   Amendment of Corporate Charter and Bylaws..............................................73
   Fair Price Provisions..................................................................73
   Rights Plans...........................................................................74
   Indemnification of Officers and Directors..............................................75
EXPERTS...................................................................................75
VALIDITY OF SHARES........................................................................76
INDEX OF DEFINED TERMS....................................................................77
ANNEX A   Agreement and Plan of Merger...................................................A-1
ANNEX B   Opinion of Salomon Smith Barney................................................B-1
ANNEX C   Opinion of Goldman, Sachs & Co.................................................C-1
</TABLE>






<PAGE>


                                     SUMMARY

    The  following is a summary of certain  information  contained  elsewhere in
this  Joint  Proxy Statement/Prospectus,  does not purport to be complete and is
qualified  in its  entirety  by  reference  to the full text of this Joint Proxy
Statement/Prospectus,  including the Annexes  attached  hereto and the documents
incorporated herein by reference.  The information contained in this Joint Proxy
Statement/Prospectus  with  respect to SBC and Merger Sub has been  supplied  by
SBC,  and the  information  with  respect  to  Ameritech  has been  supplied  by
Ameritech.

THE COMPANIES

    SBC

    SBC  is  a  holding  company  whose   subsidiaries  and  affiliates  operate
predominantly in the communications  services  industry.  SBC's subsidiaries and
affiliates  provide  landline  and  wireless   telecommunications  services  and
equipment,  directory  advertising,  publishing  services  and  Internet  access
services. SBC's subsidiaries and affiliates provide landline  telecommunications
and related services in California,  Texas, Missouri, Oklahoma, Kansas, Arkansas
and Nevada and wireless  telecommunications and related services in those states
as well as in Illinois,  Maryland, Indiana,  Massachusetts,  New York, Virginia,
Washington,  D.C. and West Virginia. SBC will also provide landline and wireless
telecommunications  and related services in Connecticut and wireless services in
Rhode Island  following the completion of the acquisition of SNET, if completed.
SBC was incorporated under the laws of the State of Delaware in 1983.

    On January 4, 1998, SBC entered into an agreement to acquire SNET, which, as
of and for the year  ended  December  31,  1997,  had  assets  of $2.8  billion,
shareholders'  equity  of $597  million  and net  income  of $194  million.  The
acquisition of SNET is intended to qualify for "pooling of interests" accounting
treatment, and is expected to close prior to the end of 1998. The Merger and the
SNET  acquisition  are both  reflected  in  certain  of the pro  forma  combined
financial information presented herein.

    The  mailing  address  of  SBC's  principal  executive  offices  is 175 East
Houston,  San  Antonio,  Texas  78205-2233,  and its  telephone  number is (210)
821-4105.

    Ameritech

    Ameritech is a holding  company whose  subsidiaries  and affiliates  operate
predominantly in the communications  services industry. Ameritech's subsidiaries
and affiliates provide a wide range of communications services,  including local
and long distance,  cellular,  paging,  security,  cable TV, Internet access and
directory publishing services.  Ameritech's  subsidiaries and affiliates provide
landline  and  wireless  telecommunications  and related  services in  Illinois,
Indiana, Michigan, Ohio and Wisconsin,  wireless  telecommunications and related
services in Missouri,  Minnesota and Hawaii and security  monitoring services in
most of the  United  States'  largest  metropolitan  areas.  Ameritech  also has
significant  investments  in  the  European   telecommunications  industry  with
financial interests in 15 European countries.

    The mailing address of Ameritech's  principal  executive offices is 30 South
Wacker  Drive,  Chicago,  Illinois  60606,  and its  telephone  number  is (800)
257-0902.

    Merger Sub

    Merger Sub, a  wholly-owned  subsidiary of SBC, was formed by SBC solely for
the  purpose of  effecting  the  Merger.  The  mailing  address of Merger  Sub's
principal executive offices is 175 East Houston, San Antonio,  Texas 78205-2233,
and its telephone number is (210) 821-4105.

<PAGE>


RECENT DEVELOPMENTS

    Ameritech

    Telecom  Corporation  of New Zealand  ("TCNZ").  Pursuant to a plan publicly
announced in December 1997, Ameritech completed the sale of substantially all of
its  stake  in TCNZ in a  global  stock  offering  in  April  1998.  Subject  to
applicable  exchange rates,  Ameritech  expects to receive total net proceeds of
approximately $2.1 billion (before deducting  transaction costs).  Approximately
$1.1 billion of such  proceeds has been  received,  and the  remainder is due by
March 31, 1999.  Ameritech accounted for this transaction as a sale and recorded
an after-tax gain of approximately $1.0 billion,  which will be reflected in the
second quarter of 1998.


THE SPECIAL MEETINGS

    SBC

    The SBC Special Meeting to consider and vote on the proposal to issue shares
of SBC Common Stock pursuant to the Merger  Agreement,  the Bylaw  Amendment and
the Share  Increase  Proposal will be held on [o],  1998, at [o], local time, at
[o].  Only holders of record of SBC Common Stock at the close of business on [o]
(the "SBC Record Date") will be entitled to vote at the SBC Special Meeting.  On
the SBC Record Date,  there were [o] shares of SBC Common Stock  outstanding and
entitled to vote.  Each share of SBC Common Stock is entitled to one vote at the
SBC Special Meeting.

    The  affirmative  vote of at least a  majority  of the  shares of SBC Common
Stock voting on the proposal to issue shares of SBC Common Stock pursuant to the
Merger Agreement,  assuming at least a majority of the outstanding shares of SBC
Common Stock are present at the SBC Special  Meeting,  is necessary for approval
of such  share  issuance.  The  affirmative  vote  of the  holders  of at  least
two-thirds of the shares of SBC Common Stock issued and  outstanding  on the SBC
Record Date is necessary to adopt the Bylaw  Amendment.  The affirmative vote of
the holders of at least a majority of the shares of SBC Common  Stock issued and
outstanding  on the SBC Record  Date is  necessary  to adopt the Share  Increase
Proposal.

    Ameritech

    The Ameritech  Special  Meeting to consider and vote on the Merger  Proposal
will be held on [o], 1998, at [o], local time, at [o]. Only holders of record of
Ameritech  Common  Stock at the close of business on [o],  1998 (the  "Ameritech
Record Date") will be entitled to vote at the Ameritech Special Meeting.  On the
Ameritech  Record  Date,  there  were  [o]  shares  of  Ameritech  Common  Stock
outstanding  and  entitled  to vote.  Each share of  Ameritech  Common  Stock is
entitled to one vote at the Ameritech Special Meeting.

    The  affirmative  vote of at least a  majority  of the  shares of  Ameritech
Common Stock issued and  outstanding  on the Ameritech  Record Date is necessary
for approval of the Merger Proposal.

    For  additional  information  relating  to the  Special  Meetings,  see "The
Special Meetings."

THE MERGER

    The  Merger  Agreement  provides  for a  business  combination  of  SBC  and
Ameritech  pursuant  to  which,  subject  to the  satisfaction  or waiver of the
conditions  therein, at the effective time of the Merger (the "Effective Time"),
Merger Sub will be merged with and into  Ameritech  and  Ameritech  will thereby
become a wholly-owned subsidiary of SBC in a transaction intended to qualify for
"pooling of interests"  accounting treatment and as a tax-free  "reorganization"
under the Internal  Revenue Code of 1986, as amended (the  "Code"),  for federal
income tax  purposes.  As a consequence  of the Merger,  each share of Ameritech
Common Stock issued and  outstanding  immediately  prior to the  Effective  Time
(other than Excluded  Ameritech  Common Stock) will be converted into and become
exchangeable  for a number of shares of SBC Common  Stock equal to the  Exchange
Ratio (the "Merger Consideration"). Each share of SBC Common Stock issued in the
Merger will have attached thereto the


                                        2

<PAGE>




appropriate  number of SBC Rights or SBC Substitute Rights in the event that SBC
Rights or SBC Substitute  Rights are attached to the  outstanding  shares of SBC
Common Stock when shares of SBC Common  Stock are issued  pursuant to the Merger
Agreement.  Each outstanding  share of SBC Common Stock will remain  outstanding
and  unaffected by the Merger.  As a result of the Merger,  holders of Ameritech
Common Stock immediately prior to the Effective Time will own approximately [o]%
of SBC  Common  Stock  (based on the  number of shares of SBC  Common  Stock and
Ameritech  Common  Stock  issued  and  outstanding  as of [o],  1998  and on the
Exchange Ratio, but not including any shares of SBC Common Stock to be issued in
the SNET acquisition).

    No  fractional  shares of SBC  Common  Stock  will be issued in the  Merger.
Instead,  the Merger  Agreement  provides  that each holder of Ameritech  Common
Stock who would  otherwise  have been entitled to receive a fractional  share of
SBC Common Stock in the Merger will be entitled to receive,  in lieu thereof, an
amount in cash  (without  interest)  determined  by  multiplying  such  fraction
(rounded to the  nearest  one-hundredth  of a share) by the  closing  price of a
share of SBC Common Stock, as reported in The Wall Street Journal, New York City
edition, on the trading day immediately prior to the Effective Time.

  Reasons for the Merger; Recommendations of the Boards of Directors

    SBC

    The SBC Board has determined that the terms of the Merger  Agreement and the
transactions contemplated thereby are fair to, and in the best interests of, SBC
and its shareowners.  ACCORDINGLY, THE SBC BOARD HAS AUTHORIZED AND APPROVED THE
MERGER AGREEMENT AND THE MERGER AND UNANIMOUSLY  RECOMMENDS THAT THE SHAREOWNERS
OF SBC VOTE FOR APPROVAL OF THE ISSUANCE OF SHARES OF SBC COMMON STOCK  PURSUANT
TO THE  MERGER  AGREEMENT.  The  recommendation  of the SBC  Board is based on a
number of strategic, operating and financial factors as described in "The Merger
- -- Reasons for the Merger; Recommendations of the Boards of Directors -- SBC."

    Ameritech

    The Ameritech Board has unanimously  determined that the terms of the Merger
Agreement and the  transactions  contemplated  thereby  are fair to, and  in the
best interests of,  Ameritech and its  shareowners.  ACCORDINGLY,  THE AMERITECH
BOARD HAS UNANIMOUSLY  APPROVED THE MERGER AGREEMENT AND UNANIMOUSLY  RECOMMENDS
THAT THE SHAREOWNERS OF AMERITECH VOTE FOR ADOPTION OF THE MERGER PROPOSAL.  The
recommendation  of the  Ameritech  Board  is based  on a  number  of  strategic,
operating and  financial  factors as described in "The Merger -- Reasons for the
Merger; Recommendations of the Boards of Directors -- Ameritech."

  Opinions of Financial Advisors

    SBC

    On May 10, 1998,  Salomon  Brothers Inc and Smith Barney Inc.,  collectively
doing business as Salomon Smith Barney  ("Salomon Smith  Barney"),  delivered to
the SBC Board their  opinion to the effect that,  as of such date,  the Exchange
Ratio was fair from a financial point of view to SBC.

    The full text of the written opinion of Salomon Smith Barney,  dated May 10,
1998, which sets forth assumptions made,  matters  considered and limitations on
the review  undertaken in  connection  with the opinion,  is attached  hereto as
Annex B and is incorporated herein by reference. Holders of SBC Common Stock are
urged to, and  should,  read such  opinion in its  entirety.  See "The Merger --
Opinions of Financial Advisors -- SBC."

    Ameritech

    On May 10, 1998,  Goldman,  Sachs & Co. ("Goldman  Sachs")  delivered to the
Ameritech  Board its opinion to the effect that,  as of such date,  the Exchange
Ratio pursuant to the Merger Agreement is fair from a financial point of view to
the holders of Ameritech Common Stock.


                                        3

<PAGE>




    The full text of the written  opinion of Goldman Sachs,  dated May 10, 1998,
which sets forth  assumptions  made,  matters  considered and limitations on the
review undertaken in connection with the opinion,  is attached hereto as Annex C
and is incorporated  herein by reference.  Holders of Ameritech Common Stock are
urged to, and  should,  read such  opinion in its  entirety.  See "The Merger --
Opinions of Financial Advisors -- Ameritech."

  Effective Time

    The Effective Time will occur when a certificate of merger (the "Certificate
of  Merger")  has been duly  filed with the  Secretary  of State of the State of
Delaware  or such other time as agreed  upon by the parties and set forth in the
Certificate of Merger in accordance  with the Delaware  General  Corporation Law
(the "DGCL").

    See "The Merger -- Closing; Effective Time."

  Covenants

    Interim Operations

    Pursuant to the Merger Agreement, each of SBC and Ameritech has agreed as to
itself and its respective  Subsidiaries (as defined herein) that, after the date
of the Merger  Agreement and prior to the Effective  Time, it will,  among other
things and subject to certain specified exceptions,  (i) conduct its business in
the ordinary and usual course;  (ii) not declare,  set aside or pay any dividend
payable in cash,  stock or property  (other than, in the case of SBC, SBC Common
Stock) in respect  of any  capital  stock,  other than  regular  quarterly  cash
dividends in amounts consistent with its past practice; (iii) not knowingly take
any action  that would  prevent  the Merger  from  qualifying  for  "pooling  of
interests"  accounting treatment or as a "reorganization"  within the meaning of
Section  368(a) of the Code;  (iv) not  issue any  preferred  stock or incur any
indebtedness for borrowed money or guarantee any such  indebtedness if it should
reasonably anticipate that, after any such issuance or incurrence, any of its or
any of its Subsidiaries'  outstanding  senior  indebtedness  would be rated A or
lower by Standard & Poor's;  (v) not, and not permit its  Subsidiaries  to, make
any  capital  expenditures  in any  period  of twelve  consecutive  months in an
aggregate  amount in excess of 150% of the  aggregate  amount  reflected  in its
capital  expenditure  budget  for such  year;  (vi) not  spend in excess of $4.8
billion, in the case of SBC, and $3.6 billion, in the case of Ameritech,  in the
aggregate in any period of twelve  consecutive  months to acquire any  business;
and (vii) not enter into any business other than the telecommunications business
and  those  businesses  traditionally  associated  with  the  telecommunications
business. See "The Merger -- Certain Covenants -- Interim Operations."

  Acquisition Proposals

    Pursuant to the Merger Agreement,  each of SBC and Ameritech has agreed that
neither they nor any of their respective  Subsidiaries  will, and that each will
direct  and use its best  efforts to cause its and its  Subsidiaries  employees,
agents and  representatives not to, directly or indirectly,  initiate,  solicit,
encourage or otherwise facilitate any inquiries or the making of any proposal or
offer with respect to a merger, reorganization, share exchange, consolidation or
similar transaction  involving,  or any purchase of, or tender offer for, any of
the assets of it or any of its  Subsidiaries  or its voting  securities if, as a
result of such transaction, (i) the shareowners of SBC or Ameritech, as the case
may be, do not hold  more than 50% of the  voting  securities  of the  surviving
corporation or its ultimate parent,  (ii) the directors of SBC or Ameritech,  as
the case may be, do not  constitute  a majority of the board of directors of the
surviving  corporation  or its ultimate  parent,  or (iii) another  person would
acquire more than 50% of the assets of SBC or Ameritech, as the case may be, and
their respective  Subsidiaries  (any such proposal or offer made to SBC being an
"SBC  Acquisition  Proposal"  and any such  proposal or offer made to  Ameritech
being an  "Ameritech  Acquisition  Proposal,"  and  together  referred  to as an
"Acquisition Proposal").

    SBC and Ameritech have further  agreed in the Merger  Agreement that neither
they nor any of their Subsidiaries will, and that they will direct and use their
best  efforts to cause  their  respective  representatives  not to,  directly or
indirectly,  have any discussion with or provide any confidential information or
data to any person  relating  to an SBC  Acquisition  Proposal  or an  Ameritech
Acquisition  Proposal,  as the  case  may  be,  or  engage  in any  negotiations
concerning an SBC Acquisition Proposal or an Ameritech  Acquisition Proposal, as
the case may be,  or  otherwise  facilitate  any  effort or  attempt  to make or
implement  an SBC  Acquisition  Proposal or an Ameritech  Acquisition  Proposal.
Notwithstanding the foregoing, the Merger Agreement does not prevent either


                                        4

<PAGE>




SBC or Ameritech or their  respective  representatives  from (A) complying  with
Rule 14e-2  promulgated  under the  Exchange  Act with regard to an  Acquisition
Proposal; (B) engaging in any discussions or negotiations with, or providing any
information  to, any person in  response  to an  unsolicited  bona fide  written
Acquisition Proposal by any such person; or (C) recommending such an unsolicited
Acquisition Proposal to the shareowners of SBC or Ameritech, as the case may be,
if and only to the extent that, in such cases referred to in (B) or (C), (i) the
SBC Board or the Ameritech  Board,  as the case may be,  concludes in good faith
(after  consultation  with its  financial  advisor)  that  such SBC  Acquisition
Proposal or Ameritech  Acquisition  Proposal,  as the case may be, is reasonably
capable of being completed, taking into account all legal, financial, regulatory
and other aspects of the proposal and the person making the proposal, and would,
if consummated, result in a transaction more favorable to its shareowners from a
financial  point  of  view  than  the  transaction  contemplated  by the  Merger
Agreement (any such more favorable SBC Acquisition Proposal being referred to as
a "Superior SBC  Proposal," and any such more  favorable  Ameritech  Acquisition
Proposal being referred to as a "Superior Ameritech Proposal," and together as a
"Superior Proposal"), (ii) the SBC Board or the Ameritech Board, as the case may
be, determines in good faith after  consultation with outside legal counsel that
such action is necessary to comply with its fiduciary duty under  applicable law
and (iii) prior to providing any information or data to any person in connection
with an SBC Acquisition Proposal or Ameritech  Acquisition Proposal, as the case
may be, by any such person,  the SBC Board or the Ameritech  Board,  as the case
may be, receives from such person a confidentiality agreement in customary form,
subject to exceptions provided for in the Merger Agreement.

  "Pooling of Interests" Accounting Treatment

    Pursuant to the Merger  Agreement,  Ameritech and SBC have agreed to use all
of their  respective  reasonable best efforts to cause the Merger to qualify for
"pooling of interests" accounting treatment.

  Certain Regulatory Filings and Approvals

    Pursuant to the Merger Agreement, Ameritech and SBC have agreed to cooperate
with each other and use (and cause their respective  Subsidiaries to use) all of
their  respective  reasonable  best  efforts  to take or cause  to be taken  all
actions, and do or cause to be done all things,  necessary,  proper or advisable
on its part under the Merger  Agreement and  applicable  laws to consummate  and
make effective the Merger and the other transactions  contemplated by the Merger
Agreement as soon as practicable;  provided,  however, that nothing set forth in
the  provisions  of the  Merger  Agreement  relating  to  regulatory  filings or
approvals  will require,  or be construed to require,  SBC or Ameritech to agree
to, or comply with, any conditions to the granting of any consent, registration,
approval, permit or authorization by any Governmental Entity (as defined herein)
if compliance with such conditions,  individually or in the aggregate,  would be
reasonably  likely to have a  Regulatory  Material  Adverse  Effect (as  defined
herein) on the Surviving  Corporation  or SBC following the Effective  Time. See
"The Merger -- Certain Regulatory Approvals."

    General

    There can be no assurance as to when or if any of the  regulatory  approvals
described  below will be obtained.  In addition,  there can be no assurance that
certain of such approvals will not include  conditions  that could result in the
abandonment of the Merger by SBC and Ameritech.

    HSR

    Under the Hart-Scott-Rodino  Antitrust  Improvements Act of 1976, as amended
(the "HSR Act"), and the rules  promulgated  thereunder,  certain  transactions,
including the Merger,  may not be  consummated  unless  certain  waiting  period
requirements  have been satisfied.  SBC and Ameritech will each file a Premerger
Notification and Report Form (a "Notification  and Report Form") pursuant to the
HSR Act with the Antitrust Division of the Department of Justice ("Department of
Justice") and the Federal Trade Commission  ("FTC").  The HSR Act waiting period
will  expire  thirty  days after the  Notification  and Report  Forms are filed,
unless the waiting  period is extended by action of the Department of Justice or
the FTC  requesting  additional  information.  At any time  before  or after the
Effective  Time,  the FTC, the Department of Justice or others could take action
under the antitrust laws with respect to the Merger, including seeking to enjoin
the consummation of the Merger, to rescind the Merger or to require  divestiture
of substantial assets of SBC or Ameritech. There can be no assurance that a


                                        5

<PAGE>




challenge  to the  Merger on  antitrust  grounds  will not be made or, if such a
challenge is made, that it would not be successful.

    FCC

    Before the Merger can be  consummated,  SBC and  Ameritech  must  obtain the
approval of the Federal  Communications  Commission  (the "FCC") pursuant to the
Communications Act of 1934, as amended (the  "Communications  Act") for transfer
of control from Ameritech to SBC of certain FCC licenses and authorizations held
by  certain  of  Ameritech's  Subsidiaries.  SBC and  Ameritech  intend  to file
transfer of control applications with the FCC which will seek the FCC's approval
to transfer such  licenses and  authorizations.  SBC and  Ameritech  expect that
these  applications  will demonstrate  compliance with the FCC's standards.  See
"The Merger -- Certain Regulatory Filings and Approvals -- FCC."

    The  FCC  has  established  certain  rules  and  regulations,  including  in
particular 47 C.F.R. Section 22.942, that limit the ability of any single person
to have an interest in more than one cellular license in the same market.  In an
effort to comply with the FCC's rules and  regulations,  SBC and  Ameritech  are
investigating   various   alternatives   regarding  their  overlapping  cellular
licenses. See "The Merger -- Certain Regulatory Filings and Approvals -- FCC."

    State PUC Approvals

    Ameritech has subsidiaries  that operate as public utility or public service
companies in the states of Illinois,  Michigan, Ohio, Wisconsin, and Indiana and
such  subsidiaries  accordingly are regulated by the public utility  commissions
(including any analogous foreign or local bodies,  each a "PUC") in such states.
Express  statutory  provisions in Illinois and Ohio require SBC and Ameritech to
obtain  the  approval  of such  states'  PUCs prior to the  consummation  of the
Merger. Approval of the PUCs is not expressly required in the states of Indiana,
Michigan  and  Wisconsin.  See "The  Merger -- Certain  Regulatory  Filings  and
Approvals -- State PUCs." In addition, in connection with the Merger,  Ameritech
may be required to modify or withdraw certain of its  authorizations  to provide
long distance service in states where it or SBC operates local exchange service.
See "The Merger -- Certain  Regulatory  Filings and  Approvals -- PUC  Approvals
Regarding Intrastate, Interexchange Service."

    Municipal Cable Franchises

    Under the Cable Franchise  Agreements (as defined herein),  the consummation
of the Merger may require the approval of the relevant municipalities.  See "The
Merger  --  Certain   Regulatory   Filings  and  Approvals  --  Municipal  Cable
Franchises."

    European Regulatory Approvals

    SBC and  Ameritech  may be  required  to make  certain  notifications  to or
filings with regulatory  authorities in one or more European  countries in which
SBC or  Ameritech  has  direct or  indirect  investments  in  telecommunications
companies.  See "The  Merger --  Regulatory  Approvals  --  European  Regulatory
Approvals."

  Stock Exchange Listing

    SBC has  agreed to use its best  efforts  to cause the  shares of SBC Common
Stock to be issued in the Merger to be approved for listing on the NYSE, subject
to official  notice of issuance,  prior to the date of the closing of the Merger
(the "Closing Date").

  Employee Benefits

    Stock Options

    The Merger  Agreement  provides that at the Effective Time each  outstanding
option to purchase shares of Ameritech Common Stock (each an "Ameritech Option")
under the Ameritech Stock Plans (as defined herein),


                                        6

<PAGE>




whether  vested or unvested,  will be deemed to constitute an option to acquire,
on the same terms and conditions as were applicable under such Ameritech Option,
the same  number of shares of SBC Common  Stock as the holder of such  Ameritech
Option  would  have been  entitled  to receive  pursuant  to the Merger had such
holder  exercised  such  Ameritech  Option  in  full  immediately  prior  to the
Effective  Time  (rounded  down to the  nearest  whole  number)  (a  "Substitute
Option"),  at an exercise price per share (rounded up to the nearest whole cent)
(a "Substitute  Option Price") equal to (y) the aggregate exercise price for the
shares  of  Ameritech  Common  Stock  otherwise  purchasable  pursuant  to  such
Ameritech  Option  divided by (z) the number of full shares of SBC Common  Stock
deemed  purchasable  pursuant to such  Ameritech  Option in accordance  with the
terms  of  the  Merger  Agreement.  See  "The  Merger--Employee  Benefits--Stock
Options."

  Benefit Plans

    The Merger Agreement  provides that, subject to certain  exceptions,  for at
least  two  years  after  the  Effective  Time,  SBC will  cause  the  Surviving
Corporation to provide or cause to be provided to employees of Ameritech and its
Subsidiaries  compensation and benefit plans that are no less favorable,  in the
aggregate,  than certain  Ameritech  Compensation  and Benefit Plans (as defined
herein)  specifically  disclosed to SBC. See "The Merger -- Employee Benefits --
Benefit Plans".

  Expenses

    The Merger Agreement provides that whether or not the Merger is consummated,
all costs and expenses  incurred in connection with the Merger Agreement and the
Merger and the other  transactions  contemplated by the Merger Agreement will be
paid by the party  incurring  such  expense,  except that  expenses  incurred in
connection with the filing fee for the  Registration  Statement and printing and
mailing this Joint Proxy Statement/Prospectus and the Registration Statement and
the filing fee under the HSR Act will be shared equally by SBC and Ameritech.

  Indemnification; Directors' and Officers' Insurance

    The Merger  Agreement  provides that, from and after the Effective Time, SBC
will, and will cause the Surviving  Corporation to,  indemnify and hold harmless
each present and former  director and officer of Ameritech  (when acting in such
capacity)  determined as of the Effective Time (each,  an  "Indemnified  Party")
against any costs or expenses (including reasonable attorneys' fees), judgments,
fines, losses, claims, damages or liabilities  (collectively,  "Costs") incurred
in connection with any claim, action, suit, proceeding or investigation, whether
civil, criminal,  administrative or investigative,  arising out of or pertaining
to matters  existing or occurring  at or prior to the  Effective  Time,  whether
asserted or claimed  prior to, at or after the  Effective  Time,  to the fullest
extent permitted under Delaware law.

    The Merger  Agreement  also  provides that the  Surviving  Corporation  will
maintain a policy of officers' and directors'  liability  insurance for acts and
omissions occurring prior to the Effective Time ("D&O Insurance"), with coverage
in amount and scope at least as favorable as Ameritech's existing directors' and
officers'  liability  insurance  coverage,  for a period of six years  after the
Effective Time. However, if the existing D&O Insurance expires, is terminated or
canceled,  or if the annual premium therefor is increased to an amount in excess
of  175% of the  last  annual  premium  paid  prior  to the  date of the  Merger
Agreement (the "Current Premium"), in each case during such six year period, the
Surviving  Corporation  will use its best efforts to obtain D&O  Insurance in an
amount and scope as great as can be obtained  for the  remainder  of such period
for a premium  not in excess  (on an  annualized  basis) of 175% of the  Current
Premium.

  SBC Board Following the Merger

    SBC has agreed  pursuant to the Merger  Agreement that at the Effective Time
SBC will enable up to five members of the  Ameritech  Board to be members of the
SBC Board.  The SBC Board, in consultation  with the Chief Executive  officer of
Ameritech  and the  Ameritech  Board,  will select the  director  designees  and
appoint each such director  designee to the SBC Board as of the Effective  Time,
with such director  designees  divided as nearly evenly as is possible among the
classes of directors on the SBC Board.  SBC and Ameritech expect that Richard C.
Notebaert,  Chairman  of the Board,  President  and Chief  Executive  Officer of
Ameritech,  will be one of the members of the Ameritech  Board who will become a
member of the SBC Board as of the Effective Time.


                                        7

<PAGE>




  Conditions

    The respective  obligations  of Ameritech,  SBC and Merger Sub to effect the
Merger are subject to the  satisfaction  or waiver at or prior to the  Effective
Time of a number of conditions including the following: (a) the Merger Agreement
having been duly adopted by the  requisite  vote of holders of Ameritech  Common
Stock and duly adopted by the sole  stockholder  of Merger Sub, and the issuance
of shares of SBC Common Stock pursuant to the Merger  Agreement having been duly
approved  by the  holders of shares of SBC Common  Stock;  (b) the shares of SBC
Common Stock  issuable to the  shareowners  of Ameritech  pursuant to the Merger
Agreement  having been  authorized for listing on the NYSE, upon official notice
of issuance; (c) the waiting period applicable to the consummation of the Merger
under the HSR Act having expired or been  terminated and all material  Ameritech
Required  Consents (as defined  herein) and  material SBC Required  Consents (as
defined  herein)  from or with  any  Governmental  Entity  having  been  made or
obtained  pursuant to a Final Order (as defined herein),  free of any conditions
(other than conditions that are not reasonably likely, either individually or in
the aggregate to have a Regulatory Material Adverse Effect (as defined herein));
(d) no Governmental  Entity of competent  jurisdiction  having enacted,  issued,
promulgated,  enforced  or entered  any law or  injunction  (whether  temporary,
preliminary or permanent) that is in effect and restrains,  enjoins or otherwise
prohibits  consummation of the Merger or the other transactions  contemplated by
the Merger  Agreement or that is,  individually  or in the  aggregate,  with all
other such laws or  injunctions,  reasonably  likely to have a Material  Adverse
Effect (as defined herein) on SBC or Ameritech  (collectively,  an "Order"), and
no  Governmental  Entity having  instituted  any proceeding or, in the case of a
federal Governmental  Entity,  threatened in writing to institute any proceeding
seeking any such Order; (e) the  Registration  Statement having become effective
under the  Securities  Act;  (f) SBC and  Ameritech  having  received  customary
"comfort"  letters from each other's  independent  auditors  with respect to the
Registration  Statement,  and letters from their respective  independent  public
accounting  firms to the effect  that the Merger will  qualify  for  "pooling of
interests"  accounting  treatment;   and  (g)  SBC  having  received  all  state
securities  and "blue sky" permits and  approvals  necessary to  consummate  the
transactions  contemplated  by   the   Merger  Agreement.  See  "The  Merger  --
Conditions."

    The Merger  Agreement  also provides that the  obligations of SBC and Merger
Sub to effect the Merger are subject to the  satisfaction or waiver by SBC at or
prior to the Effective  Time of a number of conditions  including the following,
subject  to  certain  exceptions:  (a) the  representations  and  warranties  of
Ameritech  set forth in the  Merger  Agreement  being  true and  correct  in all
material  respects;  (b) Ameritech having performed in all material respects all
obligations  required to be  performed  by it under the Merger  Agreement  at or
prior to the Closing Date; (c) Ameritech having obtained the consent or approval
of each person whose consent or approval is required in order to consummate  the
transactions contemplated by the Merger Agreement under any Contract (as defined
in the Merger  Agreement)  to which  Ameritech or any of its  Subsidiaries  is a
party,  except those for which the failure to obtain such consent or  appraisal,
individually  or in the aggregate,  is not reasonably  likely to have a Material
Adverse Effect on Ameritech; and (d) SBC having received the opinion of Sullivan
&  Cromwell,  dated the  Closing  Date,  to the effect  that the Merger  will be
treated for Federal income tax purposes as a "reorganization" within the meaning
of Section  368(a) of the Code,  and that each of SBC,  Merger Sub and Ameritech
will be a party to that "reorganization" within the meaning of Section 368(b) of
the Code. See "The Merger -- Conditions."

    The Merger  Agreement  further  provides that the obligation of Ameritech to
effect the Merger is subject to the  satisfaction  or waiver by  Ameritech at or
prior to the Effective  Time of a number of conditions  including the following:
(a) the  representations  and  warranties of SBC and Merger Sub set forth in the
Merger  Agreement being true and correct in all material  respects;  (b) each of
SBC and Merger Sub having  performed  in all material  respects all  obligations
required to be  performed  by it under the Merger  Agreement  at or prior to the
Closing Date; and (c) Ameritech  having  received the opinion of Skadden,  Arps,
Slate,  Meagher & Flom (Illinois) dated the Closing Date, to the effect that the
Merger  will be treated for Federal  income tax  purposes as a  "reorganization"
within the meaning of Section 368(a) of the Code,  and that each of SBC,  Merger
Sub and Ameritech will be a party to that "reorganization" within the meaning of
Section 368(b) of the Code. See "The Merger -- Conditions."




                                        8

<PAGE>




    Termination

    The Merger  Agreement  provides that it may be terminated and the Merger may
be abandoned at any time prior to the Effective  Time,  whether  before or after
the  required  approval  or  adoption,  as  applicable,  by the  shareowners  of
Ameritech and SBC, by mutual written  consent of Ameritech and SBC authorized by
action of their respective  Boards of Directors.  The Merger  Agreement  further
provides that it may be  terminated  and the Merger may be abandoned at any time
prior to the  Effective  Time by action of either the SBC Board or the Ameritech
Board  if (i) the  Merger  has  not  been  consummated  by July  31,  1999  (the
"Termination Date") (provided, however, that if SBC or Ameritech determines that
additional  time is  necessary  in  connection  with  obtaining  an SBC Required
Consent or an Ameritech  Required Consent from or with any Governmental  Entity,
the  Termination  Date may be  extended  to a date no later than March 31,  2000
(which  date will be deemed the  Termination  Date)),  (ii) the  adoption of the
Merger  Agreement by Ameritech's  shareowners  has not occurred at the Ameritech
Special  Meeting,  (iii) the  approval  of the  issuance of shares of SBC Common
Stock  pursuant  to the  Merger  Agreement  by  SBC's  shareowners  has not been
obtained at the SBC Special Meeting, or (iv) any Order permanently  restraining,
enjoining or otherwise  prohibiting  consummation of the Merger has become final
and non-appealable.

    In addition, the Merger Agreement provides that it may be terminated and the
Merger may be abandoned at any time prior to the  Effective  Time,  by action of
the Ameritech  Board:  (a) if (i) the Ameritech  Board approves  entering into a
binding written  agreement  concerning a transaction that constitutes a Superior
Ameritech  Proposal and Ameritech notifies SBC in writing that Ameritech desires
to enter into such agreement,  (ii) SBC does not make,  within ten calendar days
after receipt of Ameritech's written  notification of its desire to enter into a
binding  agreement  for a Superior  Ameritech  Proposal,  the terms of which are
specified in such notice,  an offer that the Ameritech Board  believes,  in good
faith after consultation with its financial advisors,  is at least as favorable,
from a financial  point of view, to the shareowners of Ameritech as the Superior
Ameritech Proposal, and (iii) prior to such termination Ameritech pays to SBC in
immediately available funds any termination fees required to be paid pursuant to
the Merger  Agreement,  or (b) if (i) the SBC Board has  withdrawn  or adversely
modified  its  approval of the Merger  Agreement  or its  recommendation  to the
shareowners of SBC that such  shareowners  approve the issuance of shares of SBC
Common  Stock  pursuant  to the Merger  Agreement  or failed to  reconfirm  such
recommendation in certain specific circumstances, (ii) there has been a material
breach  by  SBC or  Merger  Sub of any  representation,  warranty,  covenant  or
agreement  contained in the Merger Agreement which (x) would result in a failure
of the condition relating to either the representations and warranties of SBC or
Merger Sub or the  performance of the obligations of SBC or Merger Sub under the
Merger Agreement and (y) cannot be or is not cured prior to the Termination Date
or (iii) SBC or any of its  representatives  takes any of the actions that would
be  proscribed  by  the  non-solicitation  provisions  of the  Merger  Agreement
described under "The Merger -- Certain  Covenants -- Acquisition  Proposals" but
for the exception  described  therein  allowing certain actions to be taken with
respect to engaging in  discussions  or  negotiating  in response to a bona fide
written  unsolicited  Superior SBC Proposal.

    The Merger  Agreement may also be terminated and the Merger may be abandoned
at any time prior to the Effective Time, by action of the SBC Board:  (a) if (i)
the SBC Board approves  entering into a binding written  agreement  concerning a
transaction that constitutes a Superior SBC Proposal and SBC notifies  Ameritech
in writing that SBC desires to enter into such  agreement,  (ii)  Ameritech does
not make,  within ten days after  receipt of SBC's written  notification  of its
desire to enter into a binding agreement for a Superior SBC Proposal,  the terms
of which are specified in such notice, an offer that the SBC Board believes,  in
good  faith  after  consultation  with its  financial  advisors,  is at least as
favorable,  from a financial  point of view,  to the  shareowners  of SBC as the
Superior SBC Proposal, and (iii) SBC prior to such termination pays to Ameritech
in immediately available funds any termination fees required to be paid pursuant
to the Merger  Agreement  or (b) if (i) the  Ameritech  Board has  withdrawn  or
adversely modified its approval or recommendation to Ameritech's  shareowners of
the Merger  Agreement,  or failed to reconfirm  such  recommendation  in certain
specified  circumstances,  (ii) there has been a material breach by Ameritech of
any  representation,  warranty,  covenant or  agreement  contained in the Merger
Agreement at the Ameritech  Special  Meeting which (x) would result in a failure
of a  condition  relating  to  either  the  representations  and  warranties  of
Ameritech or the performance of its obligations  under the Merger  Agreement and
(y) cannot be or is not cured prior to the  Termination  Date or (iii) Ameritech
or any of its representatives  takes any of the actions that would be proscribed
by the non-solicitation provisions of the Merger Agreement described



                                        9

<PAGE>




under "The Merger -- Certain  Covenants --  Acquisition  Proposals"  but for the
exception described therein allowing certain actions to be taken with respect to
engaging in  discussions  or  negotiating  in  response  to a bona fide  written
unsolicited Superior Ameritech Proposal.

Certain Termination Fees

    The  Merger  Agreement  provides  that  (i) in the  event  that a bona  fide
Ameritech  Acquisition  Proposal has been made to Ameritech  and such  Ameritech
Acquisition  Proposal  has not been  withdrawn  prior to the  Ameritech  Special
Meeting and  thereafter  the Merger  Agreement  is  terminated  by either SBC or
Ameritech  pursuant  to  the  provisions  of  the  Merger  Agreement  permitting
termination if Ameritech's shareowners fail to adopt the Merger Agreement at the
Ameritech  Special  Meeting  and  within  nine  months  after  such  termination
Ameritech  enters into an  agreement  to  consummate  a  transaction  that would
constitute  an  Ameritech  Acquisition  Proposal  if it were  the  subject  of a
proposal,  or (ii) the Merger Agreement is terminated (x) by Ameritech  pursuant
to the provisions of the Merger Agreement permitting it to terminate in order to
enter into an agreement  concerning a  transaction  that  constitutes a Superior
Ameritech  Proposal  or (y) by SBC  pursuant  to the  provisions  of the  Merger
Agreement  permitting  it to  terminate  (A)  because  the  Ameritech  Board has
withdrawn or adversely  modified its approval or  recommendation  to Ameritech's
shareowners  of the Merger  Agreement,  (B)  because of a wilful or  intentional
breach of the  representations,  warranties  or  covenants  of  Ameritech or (C)
because Ameritech or any of its representatives has taken any actions that would
be proscribed by the  non-solicitation  provisions of the Merger Agreement,  but
for the exception  therein allowing certain actions to be taken in response to a
bona fide  unsolicited  Superior  Ameritech  Proposal,  then  Ameritech  will be
required to pay SBC a fee equal to $1.2 billion  (the  "Termination  Fee").  See
"The Merger -- Termination" and "-- Certain Termination Fees."

    The Merger Agreement further provides that (i) in the event that a bona fide
SBC Acquisition  Proposal has been made to SBC and such SBC Acquisition Proposal
has not been  withdrawn  prior to the SBC  Special  Meeting and  thereafter  the
Merger  Agreement  is  terminated  by either SBC or  Ameritech  pursuant  to the
provision of the Merger Agreement  permitting  termination if SBC's  shareowners
fail to approve the  issuance  of shares of SBC Common  Stock at the SBC Special
Meeting  pursuant to the Merger  Agreement  and within  nine  months  after such
termination SBC enters into an agreement to consummate a transaction  that would
constitute an SBC Acquisition Proposal if it were the subject of a proposal,  or
(ii) if the Merger Agreement is terminated (x) by SBC pursuant to the provisions
of the Merger  Agreement  permitting  it to  terminate in order to enter into an
agreement  concerning a transaction  that constitutes a Superior SBC Proposal or
(y) by Ameritech  pursuant to the provisions of the Merger Agreement  permitting
it to terminate  (A) because the SBC Board has  withdrawn or adversely  modified
its approval or recommendation to SBC's shareowners of the issuance of shares of
SBC Common Stock  pursuant to the Merger  Agreement,  (B) because of a wilful or
intentional breach of the representations, warranties or covenants of SBC or (C)
because SBC or any of its  representatives  has taken any actions  that would be
proscribed by the non-solicitation  provisions of the Merger Agreement,  but for
the exception therein allowing certain actions to be taken in response to a bona
fide  unsolicited  Superior  SBC  Proposal,  then  SBC will be  required  to pay
Ameritech the Termination  Fee. See "The Merger -- Termination"  and "-- Certain
Termination Fees."

INTERESTS OF CERTAIN PERSONS IN THE MERGER

    In considering the recommendation of Ameritech's  Board,  shareowners should
be aware that certain  members of  management  of Ameritech and of the Ameritech
Board have certain interests in the Merger that are in addition to the interests
of shareowners generally. See "The Merger -- Interests of Certain Persons in the
Merger."

DISSENTERS' RIGHTS OF APPRAISAL

    In  accordance  with Section 262 of the DGCL,  no  appraisal  rights will be
available  to either  holders of  Ameritech  Common Stock or SBC Common Stock in
connection with the Merger.  No appraisal rights will be available to holders of
SBC Common Stock in connection  with the Bylaw  Amendment or the Share  Increase
Proposal.



                                       10

<PAGE>




ACCOUNTING TREATMENT

    Based on the advice of their respective independent public accountants,  SBC
and  Ameritech  believe that the Merger will qualify for "pooling of  interests"
accounting  treatment.  Under this method of accounting,  SBC will retroactively
restate its consolidated  financial  statements at the Effective Time to include
the  assets,  liabilities,  shareowners'  equity and  results of  operations  of
Ameritech. Consummation of the Merger is conditioned upon the receipt by SBC and
Ameritech of letters from their respective  independent  public accounting firms
stating  that the Merger will  qualify for  "pooling  of  interests"  accounting
treatment. See "The Merger -- Conditions" and "Accounting Treatment."

CERTAIN FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER

    The Merger is  intended  to qualify  for  federal  income tax  purposes as a
"reorganization"  within the meaning of Section  368(a) of the Code. In general,
assuming  the Merger so  qualifies  as a  reorganization  within the  meaning of
Section  368(a) of the  Code,  no gain or loss will be  recognized  for  federal
income tax purposes by holders of Ameritech Common Stock with respect thereto on
the surrender of their Ameritech  Common Stock in exchange for SBC Common Stock,
except with respect to cash received in lieu of fractional  shares,  and no gain
or loss will be recognized for federal income tax purposes by SBC, Merger Sub or
Ameritech. See "Certain Federal Income Tax Consequences of the Merger."

THE BYLAW AMENDMENT

    The SBC Board has  unanimously  approved the Bylaw  Amendment and recommends
that the  shareowners of SBC vote FOR the Bylaw  Amendment.  The Bylaw Amendment
would amend the second  paragraph of Article II, Section 1, of the SBC Bylaws to
provide that the maximum number of persons who may serve as directors on the SBC
Board be increased to 25 from 21. See "The Bylaw Amendment."

THE SHARE INCREASE PROPOSAL

    The  SBC  Board  has  unanimously  approved  the  Share  Increase  Proposal,
determined that it is advisable and recommends that  shareowners of SBC vote FOR
the Share  Increase  Proposal.  The Share  Increase  Proposal would increase the
number  of  authorized  shares  of SBC  Common  Stock to 10.0  billion  from 7.0
billion. See "The Share Increase Proposal."

CERTAIN EFFECTS OF THE MERGER ON THE RIGHTS OF HOLDERS OF AMERITECH COMMON STOCK

    Upon consummation of the Merger, holders of shares of Ameritech Common Stock
will become  shareowners of SBC. The internal affairs of SBC are governed by the
DGCL, the SBC Restated  Certificate  of  Incorporation  and the SBC Bylaws.  The
internal  affairs of Ameritech  are  governed by the DGCL,  the  Certificate  of
Incorporation of Ameritech, as amended (the "Ameritech Charter") and the By-Laws
of Ameritech (the "Ameritech Bylaws").  For a description of certain differences
between the rights  holders of Ameritech  Common Stock  currently have and those
they would have as holders of SBC Common Stock,  see "Description of SBC Capital
Stock," and "Comparison of Certain Rights of Shareowners of SBC and Ameritech."











                                       11

<PAGE>


                            COMPARATIVE STOCK PRICES

    The shares of SBC Common Stock and Ameritech Common Stock are each listed on
the NYSE as well as on certain other exchanges.  SBC is listed on the NYSE under
the symbol "SBC" and Ameritech is listed on the NYSE under the symbol "AIT." The
following  table sets forth,  for the periods  indicated,  the high and low sale
prices per share of SBC Common Stock and  Ameritech  Common Stock as reported on
the NYSE Composite Transactions Tape.


<TABLE>
<CAPTION>
                                                           SBC                      AMERITECH
                                                    COMMON STOCK (1)            COMMON STOCK (2)
                                                    ----------------            ----------------
CALENDAR QUARTER                                    HIGH       LOW              HIGH       LOW
- ----------------                                    ----       ---              ----       ---
<S>                                                 <C>        <C>              <C>        <C>
1996
   First Quarter..............................      $30 1/8    $24 7/8          $33 7/16   $26 1/8
   Second Quarter.............................       25 3/8     23 1/8           30         26 5/16
   Third Quarter..............................       25 1/2     23               29 13/16   24 13/16
   Fourth Quarter.............................       27 5/8     23 1/2           31 11/16   26
1997
   First Quarter..............................       29 1/8     24 13/16         32 1/2     28 5/16
   Second Quarter.............................       30 15/16   24 5/8           35 7/8     27 5/8
   Third Quarter..............................       31 1/8     26 25/32         35 5/16    30 21/32
   Fourth Quarter.............................       38 1/16    30               43 1/8     30 1/8
1998
   First Quarter..............................       46 9/16    35 3/8           49 7/8     38 27/32
   Second Quarter (through June 4, 1998)......       44 15/16   37 1/8           50 1/4     41 7/8

<FN>
(1) Prices for SBC Common Stock reflect the effect of the  two-for-one  split of
SBC Common Stock effective March 19, 1998 (the "SBC Stock Split").
(2)Prices for Ameritech Common Stock reflect the effect of the two-for-one split
of Ameritech  Common Stock  effective  December 31, 1997 (the  "Ameritech  Stock
Split").
</FN>
</TABLE>

    On May 8, 1998, the last trading day before the public  announcement  of the
Merger  Agreement,  the closing prices of SBC Common Stock and Ameritech  Common
Stock as reported on the NYSE Composite Transactions Tape were $42 3/8 per share
and $43 7/8 per share, respectively.  Based on the Exchange Ratio, the pro forma
equivalent per share value of Ameritech Common Stock on May 8, 1998 was equal to
approximately  $55.77 per share.  The pro forma  equivalent  per share  value of
Ameritech  Common  Stock on any date equals the closing sale price of SBC Common
52Stock on such date multiplied by the Exchange Ratio.

    On [o] 1998,  the closing  sale prices of the shares of SBC Common Stock and
Ameritech Common Stock as reported on the NYSE Composite  Transactions Tape were
$[o] per  share and $[o] per share  ($[o] on a pro  forma  equivalent  per share
basis), respectively.

    Shareowners are urged to obtain current  quotations for the market prices of
SBC Common Stock and Ameritech Common Stock.

    No assurance  can be given as to the market price of the SBC Common Stock at
the Effective Time. Because the Exchange Ratio is fixed in the Merger Agreement,
the market  value of the shares of SBC Common  Stock that  holders of  Ameritech
Common Stock will receive following the Closing may vary  significantly from the
market value of the shares of SBC Common Stock that holders of Ameritech  Common
Stock  would  receive if the Merger were  consummated  on the date of this Joint
Proxy Statement/Prospectus.



                                       12

<PAGE>


       SELECTED HISTORICAL AND UNAUDITED PRO FORMA COMBINED FINANCIAL DATA

    The following  table  presents  selected  historical  financial data of SBC,
Ameritech and SNET and selected  unaudited  pro forma  combined  financial  data
after  giving  effect to the  Merger  and the  pending  SNET  acquisition,  each
accounted  for as a "pooling of  interests."  SBC,  Ameritech  and SNET selected
historical data for each of the five years in the period ended December 31, 1997
have been derived from audited  financial  statements filed with the SEC and the
selected  historical data for the  three-month  period ended March 31, 1998 have
been derived from  unaudited  financial  statements  filed with the SEC. All per
share amounts give effect to the SBC Stock Split and the Ameritech  Stock Split,
as  appropriate.  The pro  forma  combined  financial  data  are  presented  for
illustrative  purposes only and are not necessarily  indicative of the financial
position or operating  results that would have  occurred or that will occur upon
consummation  of the Merger  and the SNET  acquisition.  The pro forma  combined
financial  data do not give effect to any cost savings which may result from the
integration  of the  operations  of SBC,  Ameritech  and SNET.  These  potential
savings,   as  well  as  any  potential   revenue   synergies,   reflect  future
opportunities,  including the reduction of expected cost  increases,  and do not
necessarily  involve  reductions from historical cost levels.  The unaudited pro
forma combined  financial data do not include any transaction  costs relating to
the Merger  (which are estimated to be  approximately  $150 million) or the SNET
acquisition. In addition, the unaudited pro forma combined financial data do not
include any  reorganization  costs or costs associated with the actions that may
be required to be taken regarding certain  overlapping  wireless properties as a
result  of the  Merger.  As the  nature  of any  actions  to be taken  regarding
overlapping wireless properties is unknown, the accompanying  selected unaudited
pro forma combined  financial data do not reflect any  disposition  which may be
made or consideration which may be received.  Differences in accounting policies
do not have a  material  effect  on  either  the pro  forma  combined  financial
position or pro forma combined results of operations and have not been reflected
in any unaudited  pro forma  combined  financial  data.  The following  selected
financial data should be read in conjunction with the related historical and pro
forma combined financial  statements and notes thereto incorporated by reference
or included  herein.  See  "Available  Information,"  "Incorporation  of Certain
Information by Reference" and "Unaudited Pro Forma Combined Condensed  Financial
Statements."

<TABLE>
<CAPTION>
                                      As of or for the               As of or for the years ended December 31,
                                        three months     --------------------------------------------------------------
                                           ended
                                       March 31, 1998      1997         1996          1995          1994         1993
                                       --------------      ----         ----          ----          ----         ----
                                                                  (in millions, except per share amounts)
<S>                                    <C>             <C>          <C>           <C>          <C>          <C>     
SBC - HISTORICAL
Operating revenues                       $6,424         $24,856      $23,445       $21,712       $21,006      $20,084
Income from continuing operations           912           1,474        3,189         2,958         2,777        1,589
Income from continuing operations
   per common share-basic                  0.50            0.81         1.73          1.61          1.52         0.88
Income from continuing operations
   per common share-assuming
   dilution                                0.49            0.80         1.72          1.60          1.52         0.88
Total assets                             42,114          42,132       39,485        37,112        46,113       47,695
Long-term debt                           11,758          12,019       10,930        10,409        10,746       10,588
Dividends per common share              0.23375           0.895         0.86         0.825          0.79        0.755
Book value per common share                5.67            5.38         5.28          4.57          7.29         8.34
Network access lines                      33.93           33.44        31.84         30.32         29.15        28.23

AMERITECH - HISTORICAL
Operating revenues                       $4,133         $15,998      $14,917       $13,428       $12,569      $11,865
Income from continuing operations           492           2,296        2,134         2,008         1,170        1,513
Income from continuing operations
   per common share-basic                  0.45            2.09         1.93          1.81          1.06         1.39
Income from continuing operations
   per common share-assuming
   dilution                                0.44            2.08         1.92          1.81          1.06         1.39
Total assets                             27,953          25,339       23,707        21,942        19,947       23.428
Long-term debt                            7,019           4,610        4,437         4,513         4,448        4,090
Dividends per common share                 0.30           1.148        1.078         1.015          0.97         0.93
Book value per common share                7.75            7.57         6.99          6.33          5.49         7.18






                                       13

<PAGE>


                                      As of or for the               As of or for the years ended December 31,
                                        three months     --------------------------------------------------------------
                                           ended
                                       March 31, 1998    1997         1996          1995          1994         1993
                                       --------------    ----         ----          ----          ----         ----
                                                                  (in millions, except per share amounts)

Network access lines                      20.75         20.54        19.70         19.06         18.24        17.56

PRO FORMA SBC AND
AMERITECH COMBINED
Operating revenues                      $10,557       $40,854      $38,362       $35,140       $33,575      $31,949
Income from continuing operations         1,404         3,770        5,323         4,966         3,947        3,102
Income from continuing operations
   per common share-basic                  0.43          1.15         1.62          1.51          1.21         0.96
Income from continuing operations
   per common share-assuming
   dilution                                0.42          1.14         1.61          1.50          1.21         0.96
Total assets                             70,067        67,471       63,192        59,054        66,060       71,123
Long-term debt                           18,777        16,629       15,367        14,922        15,194       14,678
Dividends per common share(1)           0.23375         0.895         0.86         0.825          0.79        0.755
Book value per common share                5.77          5.54         5.29          4.68          5.92         7.07
Network access lines                      54.69         53.98        51.55         49.37         47.39        45.79

SNET-HISTORICAL
Operating revenues                         $527        $2,022       $1,942        $1,816        $1,718       $1,655
Income (loss) from continuing
   operations                                56           198          193           169           178          (44)
Income (loss) from continuing
   operations per common share
   basic                                   0.84          2.99         2.95          2.60          2.77        (0.68)
Income (loss)  from continuing
   operations per common share
   assuming dilution                       0.83          2.98         2.94          2.60          2.77        (0.68)
Total assets                              2,815         2,771        2,671         2,724         3,505        3,762
Long-term debt                            1,146         1,157        1,170         1,182           952          984
Dividends per common share                 0.44          1.76         1.76          1.76          1.76         1.76
Book value per common share               10.23          8.96         7.05          5.42         14.77        13.38
Network access lines                       2.32          2.29         2.16          2.07          2.01         1.96

PRO FORMA SBC,
  AMERITECH AND
  SNET COMBINED
Operating revenues                      $11,084       $42,876      $40,304       $36,956       $35,293      $33,604
Income from continuing operations         1,460         3,964        5,516         5,135         4,125        3,058
Income from continuing operations
   per common share-basic                  0.43          1.17         1.62          1.50          1.22         0.91
Income from continuing operations
   per common share-assuming
   dilution                                0.42          1.16         1.61          1.50          1.22         0.91
Total assets                             72,882        70,242       65,863        61,778        69,565       74,885
Long-term debt                           19,923        17,786       16,537        16,104        16,146       15,662
Dividends per common share (1)          0.23375         0.895         0.86         0.825          0.79        0.755





                                                        14

<PAGE>


                                      As of or for the               As of or for the years ended December 31,
                                        three months     --------------------------------------------------------------
                                           ended
                                       March 31, 1998    1997         1996          1995          1994         1993
                                       --------------    ----         ----          ----          ----         ----
                                                                  (in millions, except per share amounts)

Book value per common share                5.77          5.53         5.25          4.63          6.00         7.09
Network access lines                      57.00         56.27        53.71         51.45         49.40        47.76

AMERITECH EQUIVALENTS -
  SBC AND AMERITECH
  COMBINED
Income from continuing operations
   per common share-basic(2)               0.57          1.51         2.13          1.99          1.59         1.26
Income from continuing operations
   per common share-assuming
   dilution(2)                             0.55          1.50         2.12          1.97          1.59         1.26
Dividends per common share(2)              0.31          1.18         1.13          1.09          1.04         0.99
Book value per common share(2)             7.59          7.29         6.96          6.16          7.79         9.30

AMERITECH EQUIVALENTS -
  SBC, AMERITECH AND
  SNET COMBINED
Income from continuing operations
   per common share-basic(2)               0.57          1.54         2.13          1.97          1.61         1.20
Income from continuing operations
   per common share-assuming
   dilution(2)                             0.55          1.53         2.12          1.97          1.61         1.20
Dividends per common share(2)              0.31          1.18         1.13          1.09          1.04         0.99
Book value per common share(2)             7.59          7.28         6.91          6.09          7.90         9.33

   -----------------
<FN>

    (1) The unaudited pro forma  combined cash  dividends  declared per share of
SBC Common Stock are assumed to be the same as cash dividends declared by SBC on
an historical basis.
    (2)  The  Ameritech   Equivalents   per  share  amounts  are  calculated  by
multiplying the pro forma combined per share amounts by the Exchange Ratio.
</FN>
</TABLE>




























                                                        15

<PAGE>



                              THE SPECIAL MEETINGS

GENERAL

  SBC

    This Joint Proxy  Statement/Prospectus  is being furnished to holders of SBC
Common Stock in connection with the solicitation of proxies by the SBC Board for
use at the SBC Special  Meeting,  to be held on [o],  1998, to consider and vote
upon the approval of the issuance of shares of SBC Common Stock  pursuant to the
Merger  Agreement,  adoption of the Bylaw  Amendment  and  adoption of the Share
Increase Proposal, and to transact such other business related to such proposals
as may properly come before the SBC Special Meeting.

    THE  SBC  BOARD  HAS  AUTHORIZED  AND  APPROVED  THE  MERGER  AGREEMENT  AND
UNANIMOUSLY  RECOMMENDS  THAT THE SBC  SHAREOWNERS  VOTE FOR THE APPROVAL OF THE
ISSUANCE  OF SHARES OF SBC COMMON  STOCK  PURSUANT TO THE MERGER  AGREEMENT.  IN
ADDITION,  THE SBC BOARD HAS  UNANIMOUSLY  APPROVED BOTH THE BYLAW AMENDMENT AND
THE SHARE INCREASE PROPOSAL AND DETERMINED THAT EACH IS ADVISABLE AND RECOMMENDS
THAT SBC  SHAREOWNERS  VOTE FOR  ADOPTION OF THE BYLAW  AMENDMENT  AND THE SHARE
INCREASE PROPOSAL.

  Ameritech

    This  Joint  Proxy  Statement/Prospectus  is being  furnished  to holders of
Ameritech  Common Stock in connection  with the  solicitation  of proxies by the
Ameritech  Board for use at the Ameritech  Special  Meeting,  to be held on [o],
1998, and any adjournments or postponements  thereof,  to consider and vote upon
the adoption of the Merger Agreement and to transact such other business related
to the  proposal to consider and vote upon  adoption of the Merger  Agreement as
may properly come before the Ameritech Special Meeting.

    THE  AMERITECH  BOARD HAS  UNANIMOUSLY  APPROVED  THE MERGER  AGREEMENT  AND
UNANIMOUSLY  RECOMMENDS THAT THE AMERITECH  SHAREOWNERS VOTE FOR THE ADOPTION OF
THE MERGER AGREEMENT.

    This  Joint  Proxy  Statement/Prospectus  is  also  furnished  to  Ameritech
shareowners as a prospectus in connection  with the issuance by SBC of shares of
SBC Common Stock pursuant to the Merger Agreement.

    Each copy of this  Joint  Proxy  Statement/Prospectus  mailed to  holders of
Ameritech  Common  Stock  is  accompanied  by a form  of  proxy  for  use at the
Ameritech    Special   Meeting,    and   each   copy   of   this   Joint   Proxy
Statement/Prospectus  mailed to holders of SBC Common Stock is  accompanied by a
form of proxy for use at the SBC Special Meeting. In addition,  record owners of
Ameritech  Common Stock as of the Ameritech  Record Date may provide  proxies by
calling toll-free at 1-800-___-____, or through the Internet, in accordance with
the instructions set forth on the accompanying proxy card.

DATE, PLACE AND TIME

    The SBC Special  Meeting will be held on [o],  1998,  at [o],  local time at
[o].

    The Ameritech  Special Meeting will be held on [o], 1998, at [o], local time
at [o].

RECORD DATES

  SBC

    The SBC Board has fixed the close of business on [o], 1998 as the SBC Record
Date for the  determination  of the  holders of SBC  Common  Stock  entitled  to
receive notice of and to vote at the SBC Special Meeting.

  Ameritech

    The  Ameritech  Board has fixed the close of  business  on [o],  1998 as the
Ameritech  Record Date for the  determination of the holders of Ameritech Common
Stock  entitled  to  receive  notice  of and to  vote at the  Ameritech  Special
Meeting.



                                       16

<PAGE>



VOTE REQUIRED

  SBC

    As of the SBC Record Date,  there were [o] shares of SBC Common Stock issued
and  outstanding.  Each share of SBC Common Stock  outstanding on the SBC Record
Date is  entitled  to one vote upon each matter  properly  submitted  at the SBC
Special Meeting.

    The  affirmative  vote of at least a  majority  of the  shares of SBC Common
Stock voting on the proposal to issue shares of SBC Common Stock pursuant to the
Merger  Agreement is necessary  for approval of such share  issuance.  Under the
rules of the NYSE,  in order to  approve  the  issuance  of shares of SBC Common
Stock  pursuant  to the Merger  Agreement,  the total  number of votes cast with
respect to such  matter  must be in excess of 50% of the issued and  outstanding
shares of SBC Common  Stock.  The  affirmative  vote of the  holders of at least
two-thirds of the shares of SBC Common Stock issued and  outstanding  on the SBC
Record Date is necessary to adopt the Bylaw  Amendment.  The affirmative vote of
the holders of at least a majority of the shares of SBC Common  Stock issued and
outstanding  on the SBC Record  Date is  necessary  to adopt the Share  Increase
Proposal.

    With respect to the proposal to issue shares of SBC Common Stock pursuant to
the Merger Agreement,  any abstention or broker non-vote will have the effect of
reducing  the  aggregate  number of shares of SBC  Common  Stock  voting and the
number of shares of SBC Common  Stock  required to approve such  proposal.  With
respect to each of the Bylaw  Amendment  and the Share  Increase  Proposal,  any
abstention by a record holder or beneficial owner of SBC Common Stock or failure
to vote by a record  holder of SBC  Common  Stock will have the effect of a vote
against such proposal.  Under the rules of the NYSE,  brokers who hold shares in
street name for  customers  will not have  authority  to vote on the issuance of
shares of SBC Common Stock pursuant to the Merger Agreement, unless they receive
specific  instructions from beneficial owners.  However,  under the rules of the
NYSE,  brokers who hold shares in street name for customers  will have authority
to vote on the Bylaw Amendment and the Share Increase Proposal, each of which is
considered a "routine" matter. Shares that are not voted because brokers did not
receive any such instructions are referred to as "broker non-votes."

    As of  [o],  1998,  directors  and  executive  officers  of  SBC  and  their
affiliates  owned  beneficially  an  aggregate of [o] shares of SBC Common Stock
(including shares which may be acquired within 60 days upon exercise of employee
stock  options)  or  approximately  [o]%  of  the  shares  of SBC  Common  Stock
outstanding  on such date.  The  directors  and  executive  officers of SBC have
indicated  their  intention  to vote in favor of the proposal to issue shares of
SBC Common Stock pursuant to the Merger Agreement.

    As of [o],  1998,  the  directors  and  executive  officers of SBC owned [o]
shares of Ameritech Common Stock.

  Ameritech

    As of the Ameritech  Record Date,  there were [o] shares of Ameritech Common
Stock issued and outstanding.  Each share of Ameritech Common Stock  outstanding
on the  Ameritech  Record Date is entitled to one vote on the  proposal to adopt
the Merger Agreement at the Ameritech  Special Meeting.  The affirmative vote of
the holders of a majority of the shares of Ameritech Common Stock outstanding on
the Ameritech Record Date is required to adopt the Merger Agreement. Any failure
to be present  at the  Ameritech  Special  Meeting,  in person or by proxy,  any
abstention  and any broker  non-vote will have the same effect as a vote against
adoption of the Merger Agreement.  Under the rules of the NYSE, brokers who hold
shares in  street  name for  customers  will not have  authority  to vote on the
Merger Proposal unless they receive  specific  instructions  from the beneficial
owners of such shares.

    The presence,  in person or by proxy, of a majority of the votes entitled to
be cast at the  Ameritech  Special  Meeting  will  constitute  a quorum  for the
transaction of business.

    As of [o],  1998,  directors and  executive  officers of Ameritech and their
affiliates  owned  beneficially  an aggregate of [o] shares of Ameritech  Common
Stock  (including  shares which may be acquired  within 60 days upon exercise of
employee stock options) or approximately  [o]% of the shares of Ameritech Common
Stock  outstanding  on such  date.  The  directors  and  executive  officers  of
Ameritech  have  indicated  their  intention to vote in favor of the proposal to
adopt the Merger Agreement.

    As of [o], 1998, the directors and executive officers of Ameritech owned [o]
shares of SBC Common Stock.



                                       17

<PAGE>



    See "The Merger -- Interests of Certain Persons in the Merger."

VOTING AND REVOCATION OF PROXIES

  Voting and Revocation of Proxies

    Shares of SBC Common Stock and Ameritech Common Stock represented by a proxy
properly  signed and received at or prior to the  appropriate  Special  Meeting,
unless subsequently  revoked,  will be voted in accordance with the instructions
thereon.  If a proxy is  signed  and  returned  without  indicating  any  voting
instructions,  shares of SBC Common Stock represented by the proxy will be voted
FOR the proposal to approve the issuance of shares of SBC Common Stock  pursuant
to the Merger  Agreement,  FOR the Bylaw  Amendment  and FOR the Share  Increase
Proposal,  and shares of Ameritech Common Stock represented by the proxy will be
voted FOR the proposal to adopt the Merger  Agreement.  Any proxy given pursuant
to this  solicitation  may be revoked by the person giving it at any time before
the proxy is voted by filing a duly executed revocation or a duly executed proxy
bearing a later date with the Secretary of SBC, for SBC shareowners, or with the
Secretary  of Ameritech  or  communicating  the same by telephone or through the
Internet  in the manner  described  on  Ameritech's  proxy card,  for  Ameritech
shareowners, prior to or at the appropriate Special Meeting, or, in either case,
by voting in person at the appropriate  Special Meeting,  although attendance at
the appropriate Special Meeting will not in and of itself constitute  revocation
of a proxy.  All written  notices of revocation  and other  communications  with
respect to revocation  by SBC  shareowners  should be addressed as follows:  SBC
Communications  Inc.,  175 East Houston,  San Antonio,  Texas 78205,  Attention:
Secretary.  All written  notices of  revocation  and other  communications  with
respect to revocation by Ameritech  shareowners  should be addressed as follows:
Ameritech  Corporation,   30  South  Wacker  Drive,  Chicago,   Illinois  60606,
Attention: Corporate Secretary.

    If an SBC  shareowner  is a participant  in SBC's Direct Stock  Purchase and
Reinvestment  Plan,  the SBC proxy card will serve as voting  instructions  with
respect to the  number of shares of SBC Common  Stock held in the plan on behalf
of the  particular  shareowner.  If an SBC shareowner is a participant in any of
the following  compensation  and benefit  plans of SBC: the SBC PAYSOP,  the SBC
Savings  Plan,  the SBC Savings and Security  Plan,  the Pacific  Telesis  Group
Supplemental  Retirement  and Savings Plan for  Non-Salaried  Employees,  or the
Pacific Telesis Group PAYSOP, then the SBC proxy card will, similarly,  serve as
a voting  instruction  for the  trustees of those plans where all  accounts  are
registered  in the same name. If proxy cards  representing  shares of SBC Common
Stock in the foregoing  compensation  and benefit plans are not received,  those
shares of SBC Common Stock will be voted in the same proportion as the shares of
SBC Common Stock for which signed  cards are returned by other  participants  in
such compensation and benefit plans of SBC. If an SBC shareowner participates in
any of these plans or maintains  other  accounts  under a different  name (e.g.,
with and without a middle initial), the SBC shareowner may receive more than one
set of Joint Proxy Statement/Prospectus  materials. To ensure that all shares of
SBC Common Stock are voted, the shareowner must sign and return every proxy card
received.

    If an Ameritech shareowner is a participant in the Ameritech Direct Services
Investment Plan, the Ameritech proxy card will serve as voting instructions with
respect to the number of full shares of Ameritech  Common Stock held in the plan
on  behalf  of  the  particular  shareowner.  If an  Ameritech  shareowner  is a
participant  in  the  Ameritech  Savings  Plan  for  Salaried  Employees  or the
Ameritech  Savings  and  Security  Plan  for  Non-Salaried  Employees,  then the
Ameritech  proxy  card  similarly  will  serve as  voting  instructions  for the
trustees of those plans if all accounts are registered in the same name.  Shares
of Ameritech Common Stock in the Ameritech  Savings Plan for Salaried  Employees
or the  Ameritech  Savings and Security  Plan for  Non-Salaried  Employees as to
which  voting  instructions  are not  received,  as well as shares of  Ameritech
Common Stock which have not yet been allocated to participants'  accounts in the
savings plans,  will be voted in the same  proportion as the shares of Ameritech
Common Stock for which voting  instructions  are given by other  participants in
the same plan. If an Ameritech shareowner  participates in any of these plans or
maintains other accounts under a different name (e.g., with and without a middle
initial),  the Ameritech shareowner may receive more than one copy of this Joint
Proxy Statement/Prospectus.  To ensure that all shares of Ameritech Common Stock
are voted, the shareowner must vote shares covered by every proxy card received.

    The SBC  Board  and the  Ameritech  Board  are not  currently  aware  of any
business to be acted upon at their respective  Special  Meetings,  other than as
described  herein.  If,  however,  other matters related to the proposals at the
respective  Special Meetings are properly brought before either Special Meeting,
the persons  appointed  as proxies will have  discretion  to vote or act thereon
according  to their best  judgment.  The persons  appointed as proxies will have
discretion to vote on adjournment of the Special Meetings.  Such adjournment may
be for the purpose of  soliciting  additional  proxies.  Shares  represented  by
proxies voting against,  in the case of SBC,  approval of the issuance of shares
of SBC  Common  Stock  pursuant  to the  Merger  Agreement  and,  in the case of
Ameritech, adoption of the Merger



                                       18

<PAGE>



Agreement  will be voted  against a proposal to adjourn the  respective  Special
Meeting for the purpose of soliciting additional proxies.

    Shareowners  of SBC and Ameritech will not be entitled to present any matter
for consideration at their respective Special Meetings.

SOLICITATION OF PROXIES

    In addition to  solicitation by mail,  directors,  officers and employees of
SBC or  Ameritech,  none  of whom  will be  specifically  compensated  for  such
services  but  may  be  reimbursed  for  reasonable  out-of-pocket  expenses  in
connection  therewith,  may  solicit  proxies  from  the  shareowners  of SBC or
Ameritech  personally  or by  telephone,  telecopy or telegram or other forms of
communication. Brokerage houses, nominees, fiduciaries and other custodians will
be requested to forward  soliciting  materials to beneficial  owners and will be
reimbursed for their reasonable  expenses  incurred in sending such materials to
beneficial owners.

    In addition,  SBC has retained [o] and  Ameritech has retained [o] to assist
in the solicitation of proxies from their respective shareowners. The fees to be
paid by SBC to [o] for such services will be equal to  approximately  $[o],  and
the  fees to be paid by  Ameritech  to [o] for  such  services  will be equal to
approximately  $[o]  plus  in  each  case  reasonable  out-of-pocket  costs  and
expenses.  SBC and Ameritech will each bear its own expenses in connection  with
the  solicitation  of proxies  for the  Special  Meetings,  except  that SBC and
Ameritech will share equally all expenses incurred in connection with the filing
fee for the  Registration  Statement  and  printing and mailing this Joint Proxy
Statement/Prospectus and the Registration Statement.


    AMERITECH  SHAREOWNERS  SHOULD NOT SEND AMERITECH COMMON STOCK  CERTIFICATES
WITH THEIR PROXY CARDS.


                                  THE COMPANIES

SBC

    SBC  is  a  holding  company  whose   subsidiaries  and  affiliates  operate
predominantly in the communications  services  industry.  SBC's subsidiaries and
affiliates  provide  landline  and  wireless   telecommunications  services  and
equipment,  directory  advertising,  publishing  services  and  Internet  access
services. SBC's subsidiaries and affiliates provide landline  telecommunications
and related services in California,  Texas, Missouri, Oklahoma, Kansas, Arkansas
and Nevada and wireless  telecommunications  and related services principally in
those states as well as in Illinois, Indiana, Maryland, Massachusetts, New York,
Virginia, Washington, D.C. and West Virginia. SBC will also provide landline and
wireless  telecommunications  and related  services in Connecticut  and wireless
services in Rhode Island following the completion of the acquisition of SNET, if
completed. SBC was incorporated under the laws of the State of Delaware in 1983.

    On January 4, 1998, SBC entered into an agreement to acquire SNET, which, as
of and for the year  ended  December  31,  1997,  had  assets  of $2.8  billion,
shareholders'  equity  of $597  million  and net  income  of $194  million.  The
acquisition of SNET is intended to qualify for "pooling of interests" accounting
treatment, and is expected to close prior to the end of 1998. The Merger and the
SNET  acquisition  are reflected in certain of the pro forma combined  financial
information presented herein.

    The  mailing  address  of  SBC's  principal  executive  offices  is 175 East
Houston,  San  Antonio,  Texas  78205-2233,  and its  telephone  number is (210)
821-4105.

AMERITECH

    Ameritech is a holding  company whose  subsidiaries  and affiliates  operate
predominantly in the communications services industry.  Ameritech's subsidiaries
and affiliates provide a wide range of communications services,  including local
and long distance,  cellular,  paging,  security,  cable TV, Internet access and
directory publishing services.  Ameritech's  subsidiaries and affiliates provide
landline  and  wireless  telecommunications  and related  services in  Illinois,
Indiana, Michigan, Ohio and Wisconsin,  wireless  telecommunications and related
services in Missouri, Minnesota and





                                       19

<PAGE>



Hawaii and security  monitoring  services in most of the United States'  largest
metropolitan areas.  Ameritech also has significant  investments in the European
telecommunications industry with financial interests in 15 European countries.

    The mailing address of Ameritech's  principal  executive offices is 30 South
Wacker  Drive,   Chicago,   Illinois   60606,   and  its  telephone   number  is
1-800-257-0902.


MERGER SUB

    Merger Sub, a  wholly-owned  subsidiary of SBC, was formed by SBC solely for
the  purpose of  effecting  the  Merger.  The  mailing  address of Merger  Sub's
principal executive offices is 175 East Houston,  San Antonio,  Texas 78205-2233
and its telephone number is (210) 821-4105.


                               RECENT DEVELOPMENTS

AMERITECH

    Telecom Corporation of New Zealand. Pursuant to a plan publicly announced in
December 1997, Ameritech completed the sale of substantially all of its stake in
TCNZ in a global stock  offering in April 1998.  Subject to applicable  exchange
rates,  Ameritech  expects to receive total net proceeds of  approximately  $2.1
billion (before deducting transaction costs). Approximately $1.1 billion of such
proceeds  has  been  received,  and the  remainder  is due by  March  31,  1999.
Ameritech  accounted  for this  transaction  as a sale and recorded an after-tax
gain of  approximately  $1.0  billion,  which  will be  reflected  in the second
quarter of 1998.


                                   THE MERGER

    This  section of this Joint  Proxy  Statement/Prospectus  describes  certain
aspects of the Merger.  To the extent  that it relates to the Merger  Agreement,
the  following  description  does not purport to be complete and is qualified in
its entirety by reference to the Merger Agreement,  which is attached as Annex A
to  this  Joint  Proxy   Statement/Prospectus  and  is  incorporated  herein  by
reference.  All  shareowners  of SBC and  Ameritech are urged to read the Merger
Agreement in its entirety.

GENERAL

    The Merger  Agreement  provides for a business  combination  between SBC and
Ameritech  pursuant  to  which,  subject  to the  satisfaction  or waiver of the
conditions  therein,  at the Effective Time,  Merger Sub will be merged with and
into Ameritech,  and Ameritech will thereby become a wholly-owned  subsidiary of
SBC in a  transaction  intended  to  qualify  as a "pooling  of  interests"  for
accounting and financial  reporting purposes and as a tax free  "reorganization"
within  the  meaning  of  Section  368(a)  of the Code for  federal  income  tax
purposes.  As a consequence of the Merger,  each share of Ameritech Common Stock
issued and  outstanding  immediately  prior to the  Effective  Time  (other than
Excluded Ameritech Common Stock) will be converted into and exchangeable for the
Merger  Consideration.  Each share of SBC Common Stock issued in the Merger will
have attached  thereto the  appropriate  number of SBC Rights or SBC  Substitute
Rights in the event that SBC Rights or SBC Substitute Rights are attached to the
outstanding  shares of SBC Common Stock when such shares are issued  pursuant to
the Merger  Agreement.  Each  outstanding  share of SBC Common Stock will remain
outstanding and unaffected by the Merger. As a result of the Merger,  holders of
Ameritech  Common  Stock  immediately  prior  to the  Effective  Time  will  own
approximately  [o]% of the SBC Common  Stock  (issued on the number of shares of
SBC Common Stock and  Ameritech  Common Stock  outstanding  as of [o],  1998 and
based on the Exchange Ratio, but not including any shares of SBC Common Stock to
be issued in the SNET acquisition).

    The SBC Rights Agreement and the SBC Rights are scheduled to expire by their
terms on the SBC Rights  Expiration  Date.  As of the date of this  Joint  Proxy
Statement/Prospectus,  SBC has not  determined  whether  it will  enter  into an
amendment of the SBC Rights Agreement or a new rights agreement which would have
the  effect  that the SBC  Rights  currently  outstanding  under the SBC  Rights
Agreement would continue to be outstanding after the SBC Rights Expiration Date.
If the SBC Rights or SBC Substitute Rights are outstanding at the time shares of
SBC Common Stock are issued  pursuant to the Merger  Agreement,  the appropriate
number of SBC Rights or SBC Substitute Rights will be


                                       20

<PAGE>


attached to such shares of SBC Common Stock.  If no such rights are  outstanding
at the time  shares  of SBC  Common  Stock are  issued  pursuant  to the  Merger
Agreement, no rights will be attached to such shares of SBC Common Stock.

    No  fractional  shares of SBC  Common  Stock  will be issued in the  Merger.
Instead,  the Merger  Agreement  provides  that each holder of Ameritech  Common
Stock who would  otherwise  have been entitled to receive a fractional  share of
SBC Common Stock in the Merger will be entitled to receive,  in lieu thereof, an
amount in cash  (without  interest)  determined  by  multiplying  such  fraction
(rounded to the  nearest  one-hundredth  of a share) by the  closing  price of a
share of SBC Common Stock, as reported in The Wall Street Journal, New York City
edition, on the trading day immediately prior to the Effective Time.

BACKGROUND OF THE MERGER

    Prior to the passage of the  Telecommunications  Act, Mr.  Notebaert and the
Ameritech  Board began  considering  strategic  alternatives  to better position
Ameritech  in  the  changing  telecommunications  industry,  including  possible
combinations with other large telecommunications  carriers. During the two years
leading up to the  execution of the Merger  Agreement,  Mr.  Notebaert and other
members of Ameritech's  senior management  together with, among others,  Goldman
Sachs,  identified  and  reviewed  various  strategic   alternatives.   Although
Ameritech considered certain of these strategic alternatives,  none were pursued
beyond exploratory discussions.

    During a meeting on February 24, 1998, Edward E. Whitacre,  Jr., Chairman of
the Board and Chief  Executive  Officer of SBC and Mr.  Notebaert  discussed the
possibility of a combination of the respective  businesses of SBC and Ameritech,
including  possible  structures for such a  combination.  On March 24, 1998, Mr.
Whitacre and Mr.  Notebaert met for further  discussions.  By the  conclusion of
this meeting,  their discussions had focused on the possibility of a combination
that would yield a premium for Ameritech shareowners.  During the course of that
meeting,  Mr. Whitacre and Mr. Notebaert  decided that each of them would form a
management  team to further  explore the  feasibility  of a  potential  business
combination.

    Thereafter,  Mr.  Whitacre  asked  James S. Kahan,  Senior Vice  President -
Corporate Development of SBC, to assemble a small team of SBC representatives to
work with a small group of Ameritech  representatives  in evaluating a potential
combination.  Mr.  Notebaert  requested  that Oren G.  Shaffer,  Executive  Vice
President and Chief Financial  Officer of Ameritech , Kelly R. Welsh,  Executive
Vice President and General Counsel of Ameritech, and Ali Shadman, Vice President
of Corporate  Strategy and  Development  of  Ameritech,  represent  Ameritech in
evaluating the feasibility of a possible business combination with SBC.

    On April 8, 1998,  SBC and  Ameritech  entered  into a  confidentiality  and
non-disclosure agreement governing their exchange of confidential information.

     Beginning in early April,  representatives of SBC met with  representatives
of Ameritech to discuss various aspects of a potential  combination.  During the
week of April 13,  1998,  SBC began to involve its outside  financial  and legal
advisors.  At a meeting  of the  Ameritech  Board on April 15,  1998,  Ameritech
management  presented  information  and its views regarding the possibility of a
transaction  with SBC.  Thereafter,  on April  21,  1998 Mr.  Notebaert  and Mr.
Whitacre met and determined,  based on the  information  that had been exchanged
and  reviewed,  that  there  appeared  to be  sufficient  mutual  interest  in a
potential combination to continue discussions.

    The  Ameritech  Board  met again on April 22,  1998 to  consider  additional
information  with respect to a possible  combination with SBC. At the conclusion
of such meeting,  the Ameritech Board authorized  further  exploration of such a
transaction, with the assistance of outside financial and legal advisors.

    Beginning  on April 28, 1998,  representatives  of SBC and  Ameritech  began
conducting  mutual due  diligence  reviews in Chicago and in San Antonio.  These
reviews  continued  throughout  the  first ten days of May.  On April 29,  1998,
representatives  of SBC and Ameritech met in San Antonio to discuss the terms of
a draft Merger Agreement. Negotiations regarding the Merger and the terms of the
draft Merger  Agreement  continued on a daily basis  between  April 29th and the
early morning hours of May 10th.

     On May 6, 1998 the Ameritech  Board met to discuss  various  aspects of the
proposed merger.  Members of Ameritech's senior  management,  representatives of
Goldman Sachs and Ameritech's legal advisors made presentations to the Ameritech
Board and discussed  their views and analyses of various aspects of the proposed
transaction.  The Ameritech Board reviewed and  considered,  among other things,
the matters described under



                                       21

<PAGE>



"--  Reasons  for the  Merger;  Recommendations  of the Boards of  Directors  --
Ameritech" and "-- Opinions of Financial  Advisors -- Ameritech."  The Ameritech
Board also discussed various issues still being negotiated.  The Ameritech Board
authorized  representatives  of Ameritech to continue  negotiating  with SBC and
determined  that it would convene again on May 10, 1998 to further  consider the
potential transaction with SBC.

     On May 7,  1998,  the SBC  Board  met to  discuss  various  aspects  of the
proposed merger.  Members of SBC's senior management and representatives of SBC,
as well as  Salomon  Smith  Barney,  made  presentations  to the SBC  Board  and
discussed with the SBC Board their views and analyses of various  aspects of the
proposed transaction. The SBC Board reviewed and considered, among other things,
the matters  described  under "-- Reasons  for the  Merger;  Recommendations  of
Boards of Directors -- SBC" and "-- Opinions of Financial  Advisors -- SBC." The
SBC Board also discussed various issues that were still being negotiated. At the
conclusion of this meeting, a meeting of the SBC Board was scheduled for May 10,
1998 to consider approving a merger with Ameritech.

    The parties continued to negotiate following the mid-week Board meetings and
in the early  morning  hours of May 10, 1998 the  negotiators  for each  company
reached an agreement  which they were prepared to recommend to their  respective
Boards  of  Directors.   Later  that  morning,  the  Ameritech  Board  met  with
representatives  of Ameritech  and its outside  advisors to further  discuss the
terms of the Merger  Agreement,  including,  among other  things,  the  Exchange
Ratio.  At this meeting,  Goldman  Sachs  delivered its opinion to the Ameritech
Board to the effect that, as of the date of such meeting, the Exchange Ratio was
fair from a financial point of view to holders of Ameritech Common Stock.  After
deliberation, the Ameritech Board unanimously approved the Merger Agreement.

    The SBC Board met in the afternoon on May 10, 1998 with  representatives  of
SBC and its  outside  advisors  to  further  discuss  the  terms  of the  Merger
Agreement,  including the issuance of shares of SBC Common Stock pursuant to the
Merger Agreement. At this meeting, Salomon Smith Barney delivered its opinion to
the SBC Board to the effect that, as of the date of such  meeting,  the Exchange
Ratio was fair from a financial  point of view to SBC. After  deliberation,  the
SBC Board  unanimously  (with one director  absent)  authorized and approved the
Merger Agreement,  including the issuance of shares of SBC Common Stock pursuant
to the Merger Agreement.

    Thereafter, the Merger Agreement was executed on May 10, 1998.

REASONS FOR THE MERGER; RECOMMENDATIONS OF THE BOARDS OF DIRECTORS

  SBC

    In reaching its  conclusion  to approve the Merger  Agreement and the Merger
and  recommend  that  shareowners  of SBC vote FOR  approval of the  issuance of
shares of SBC  Common  Stock  pursuant  to the Merger  Agreement,  the SBC Board
concluded  that over time the Merger was likely to increase  the value of shares
of SBC Common  Stock over what that value  would have been had SBC not agreed to
the Merger and that the  opportunities  created by the Merger to  increase  such
value more than  offset the risks  inherent  in the  Merger.  In  reaching  this
conclusion,  the SBC Board  considered  the following  benefits that it believes
will be derived from the Merger:

o  Creation  of a Global  Telecommunications  Company.  The Merger will create a
   global  telecommunications  company that will be better positioned to compete
   in  local,  national  and  international  markets.  The SBC  Board  and SBC's
   management believe that over the course of the next several years as a result
   of the rapid changes  taking place in the  telecommunications  industry,  the
   telecommunications  industry  will  be  comprised  of  a  limited  number  of
   integrated  global operators and a large number of regional,  niche and local
   competitors.  The Merger is intended to position the combined  entity to be a
   successful global operator in this environment.

o  The  "National-Local"  Strategy.  The SBC Board and SBC's management  believe
   that the Merger will  provide  the  resulting  entity with the scope,  scale,
   management  and  "critical  mass" of  resources  to permit  it to pursue  and
   implement  successfully a strategy that focuses on the local exchange  market
   on a national  basis.  In furtherance of this  national-local  strategy,  the
   combined  company  would be  positioned  to enter,  following  the receipt of
   applicable  regulatory  approvals  which are  expected to be obtained  within
   three years, 30 U.S. markets outside its traditional  local telephone region,
   including New York,  Baltimore/Washington,  Boston,  Atlanta,  Denver, Miami,
   Phoenix and Seattle,  offering an integrated  bundle of local exchange,  long
   distance,  cellular,  Internet and high-speed data services to large,  medium
   and small businesses and residential  consumers,  thereby providing customers
   with a competitive  alternative  to existing  service  providers to implement
   this  strategy.  SBC will be  required  to  obtain  certificates  to act as a
   competitive  local exchange carrier in all states in which it intends



                                       22

<PAGE>



    to function in such  capacity.  Capital  expenditures  associated  with this
    expansion are anticipated to be up to approximately  $2.5 billion in the ten
    years  following  consummation  of  the  Merger.  It is  expected  that  the
    resulting  entity would serve customers in the top 50 U.S. markets (i.e., 30
    markets outside of the traditional service territories of SBC, Ameritech and
    SNET and 20 markets inside those  territories) and that the resulting entity
    would  use those 50  markets  as a  platform  to  develop a truly  national,
    state-of-the-art  voice and data network and ultimately to interconnect that
    national   network   with  its   international   operations   to  create  an
    international network permitting it to "follow"  communications  traffic and
    serve  its  customers  globally.  SBC  estimates  that  this  national-local
    strategy  has the  potential  of  making a  positive  contribution  to SBC's
    financial results in the fourth year after consummation of the Merger,  with
    the  potential  of adding  $2.0  billion  in revenue in the fifth year after
    consummation  of the Merger and $7.0  billion in revenue and $900 million in
    net income in the tenth year after consummation of the Merger.

o  Synergistic  Benefits  Resulting  from the  Merger.  The SBC  Board and SBC's
   management  believe that the Merger will result in significant  opportunities
   for  cost  savings,  revenue  growth,  technological  development  and  other
   synergistic  benefits.  Economies  of scope and  scale,  the  elimination  of
   duplicative expenditures and the consistent use of the best practices of SBC,
   Ameritech  and SNET in cost  control and product  offerings  are  expected to
   enable the combined  company to realize  significant cost savings and revenue
   enhancements.  SBC estimates that these  potential  synergies  could increase
   estimated net income by $1.4 billion  annually and that 90% of such synergies
   could be  achieved  by the third  full  year  following  consummation  of the
   Merger.  The estimated  annual  pre-tax  synergies are expected to be derived
   from $1.2 billion in  potential  expense  savings,  $750 million in potential
   additional  revenue  synergies and $300 million in potential  combined future
   long  distance  synergies.   Additionally,   the  Merger  also  provides  the
   opportunity to reduce annual capital expenditures by $250 million annually in
   three years.  It is anticipated  that the expense savings will primarily come
   from SBC's  operations in Texas,  Missouri,  Oklahoma,  Kansas,  Arkansas and
   areas  outside  its  traditional  local  telephone  region  while the revenue
   synergies  will  primarily  come  from  Ameritech's  operations.  All  of the
   preceding   estimates  of   synergistic   benefits   are   exclusive  of  the
   national-local strategy effects described above.

o  Geographic  Diversification.  As a  result  of the  Merger,  SBC will be more
   geographically  diverse.  Its  geographic  region would  include the combined
   traditional  13  state  region  of  SBC,  Ameritech  and  SNET,  as  well  as
   complementary  international  operations  and  investments  in,  among  other
   locations,   Mexico,  South  Africa,  France,   Belgium,   Denmark,   Norway,
   Switzerland  and Hungary.  This  increased  geographic  diversification  will
   reduce the resulting  entity's  exposure to changes in economic,  competitive
   and political  conditions in any given  geographic area in which it operates,
   as compared to the exposure  that either SBC or  Ameritech  would have in the
   absence of the Merger.

o  International  Investment  and  Expansion.  The  Merger  would  expand  SBC's
   international  investments,  especially in Europe. This increased  investment
   will   facilitate   continuation   of  SBC's   strategy  of   deploying   key
   telecommunications infrastructures in high-traffic areas around the world.

o  Employees. A strong management team, drawn from the experienced management of
   both   companies,   should   permit   the  new  entity  to  become  a  global
   communications  company, to achieve synergistic  benefits and to successfully
   implement its strategies, including the national-local strategy.

The  SBC Board  weighed these advantages and opportunities against the following
risks associated with the Merger:

o  the challenges inherent in the combination of two business enterprises of the
   size and scope of SBC and Ameritech and the possible  resulting  diversion of
   management attention for an extended period of time;

o  the likelihood that the  competitiveness  of the local exchange business will
   increase due to the  entrance of  additional  competitors  or to strategic or
   product initiatives by existing  competitors which could occur in the absence
   of a Merger, but the effect of which could be exacerbated by the Merger;

o  the  additional  complexity of satisfying the FCC standards for permission to
   provide long distance service as a result of being a larger company; and

o  the fact that,  excluding  special  transition  and  integration  charges and
   assuming  that the  Merger is  consummated  in the second  half of 1999,  the
   Merger (including  anticipated synergies) is expected to be dilutive to SBC's
   otherwise anticipated earnings per share in 2000 and 2001 by approximately 7%
   and 3%, respectively.



                                       23

<PAGE>



    In reaching the determination  that the terms of the Merger were fair to and
in the best interests of SBC and its shareowners,  the SBC Board also considered
a  number  of  additional  factors,  including  its  management's  knowledge  of
Ameritech's  business and its management's reports concerning the results of its
due diligence investigation of Ameritech, the terms of the Merger Agreement, the
historical and current market prices of Ameritech Common Stock, the presentation
of SBC's  financial  advisor,  Salomon Smith Barney,  and the written opinion of
Salomon  Smith  Barney  to the  effect  that the  Exchange  Ratio is fair from a
financial point of view to SBC.

    The foregoing  discussion of the information and material factors which were
given  weight by the SBC Board is not intended to be  exhaustive.  The SBC Board
did  not  assign  specific  weights  to the  foregoing  factors  and  individual
Directors may have given different weights to different factors.  The SBC Board,
however,  unanimously  (with one director  absent)  authorized  and approved the
Merger Agreement,  including the issuance of shares of SBC Common Stock pursuant
to the Merger Agreement.

    THE SBC BOARD UNANIMOUSLY  RECOMMENDS THAT SBC SHAREOWNERS VOTE FOR APPROVAL
OF THE ISSUANCE OF SHARES OF SBC COMMON STOCK PURSUANT TO THE MERGER AGREEMENT.

  Ameritech

    The Ameritech Board has unanimously  determined that the terms of the Merger
Agreement and the transactions contemplated thereby are fair to, and in the best
interests of, Ameritech and its shareowners.

    In reaching its decision to approve the Merger  Agreement and recommend that
Ameritech  shareowners vote for adoption of the Merger  Proposal,  the Ameritech
Board  concluded that the Merger would afford the  opportunity to accelerate the
delivery of  shareowner  value and create a combined  enterprise  which would be
better positioned to accomplish Ameritech's growth strategies and participate in
the rapidly  evolving  and  expanding  global  communications  marketplace.  The
Ameritech  Board  considered  a number of factors in reaching  this  conclusion,
including the following:

    Exchange Ratio and Transaction Structure. The Ameritech Board considered the
relationship of the Exchange Ratio to the historical market prices for Ameritech
Common Stock, including the fact that the Exchange Ratio would provide a premium
of  approximately  27% to Ameritech  shareowners  based on the closing per share
sale prices on the NYSE of Ameritech Common Stock and SBC Common Stock on May 8,
1998,  the  last  trading  day  prior to the  announcement  of the  Merger.  The
Ameritech Board also viewed favorably the form of the Merger  Consideration  and
the structure of the Merger, which permit Ameritech  shareowners to exchange, on
a tax-free basis,  outstanding  shares of Ameritech  Common Stock for registered
shares  of  SBC  Common  Stock  representing  approximately  44%  of  the  total
outstanding  equity of SBC  (based on the  number of  outstanding  shares of SBC
Common Stock  outstanding  as of May 8, 1998,  without giving effect to the SNET
acquisition).  Ameritech  shareowners can thereby retain a significant aggregate
equity interest in the combined  enterprise and the related opportunity to share
in  its  future  growth.  In  reaching  its  conclusions,  the  Ameritech  Board
considered,  among  other  things,  the  various  analyses  and  reports  of its
financial  advisors and the opinion of its financial  advisor described below as
to the  fairness,  from a  financial  point of view,  of the  Exchange  Ratio to
Ameritech's shareowners. See "--Opinions of Financial Advisors--Ameritech."

    Combined Best Practices and Other Synergistic Benefits.  The Ameritech Board
considered  the  opportunity  presented  by the  Merger  for two  well-regarded,
profitable  companies  to  integrate  and  apply as best  practices  across  the
combined  enterprise their  complementary  business  strengths,  including those
relating to revenue  enhancement,  asset management,  capital  allocation,  cost
control,  operational and engineering practices,  marketing programs and product
offerings. The Ameritech Board also considered management's view that the Merger
would  create  opportunities  for revenue  growth,  economies of scope and scale
(including the greater purchasing scale of the combined enterprise), elimination
of  duplicative   expenditures,   joint  technological   development  and  other
synergistic benefits in which Ameritech shareowners would be able to participate
as shareowners of SBC following the Merger.  The Ameritech  Board concluded that
the cost and  operating  synergies  expected to be achievable as a result of the
Merger  would  not be  available  to  Ameritech  on its own.  In  addition,  the
Ameritech  Board  considered  the  demonstrated  ability of SBC's  management to
successfully  integrate  and  obtain  synergistic  benefits  from  previous  SBC
acquisitions, most notably SBC's acquisition of Pacific Telesis Group.

    Competitive  Scope and Scale. The Ameritech Board considered the opportunity
afforded by the merger of two companies with a shared strategic vision to create
a  combined  enterprise  with the  scale,  scope and  financial,  technological,
management and operational  resources to take greater  advantage of rapid growth
and change in the global



                                       24

<PAGE>




communications  marketplace  than would have been achievable by Ameritech alone.
The Ameritech Board considered the importance of scale,  scope,  market position
and financial and other resources in accelerating and achieving the execution of
Ameritech's growth strategies and in better serving customers through offering a
broad,  integrated  package of products and services on a cost-effective  basis.
The  Ameritech  Board  also  considered   that  recent   consolidation   in  the
telecommunications industry may continue or accelerate, leading to the formation
of a limited number of global industry leaders.

    Expanded Geographic Coverage;  Complementary  International  Presence.  As a
result of the  Merger,  the  combined  enterprise  would be more  geographically
diversified,  both domestically and  internationally,  through the complementary
investments  and operations of Ameritech and SBC in Belgium,  Denmark,  Hungary,
Mexico,  South  Africa and fourteen  other  countries  on five  continents.  The
Ameritech  Board  considered  management's  view that this extended  reach would
provide opportunities for the resulting entity to meet the needs of national and
international customers for integrated  communications services across a broader
geographic  base. The Ameritech  Board also  considered the  opportunity for the
combined  company's  expanded  platform in key  communications  and  information
markets  to  position  it  to  maximize   future  growth   opportunities,   both
domestically and internationally.

    Potential Risks. The Ameritech Board considered a number of potential risks,
as well as related mitigating  factors, in connection with its evaluation of the
Merger. Such risks included the potential diversion of management resources from
operational  matters and the  opportunity  costs  associated  with the  proposed
Merger during an extended  regulatory  review process.  In weighing this factor,
however,  the Ameritech Board considered the flexibility afforded by the interim
operating  covenants  in  the  Merger  Agreement,   relating,  for  example,  to
acquisitions,  divestitures,  capital  expenditures,  indebtedness and continued
regular dividend payments.  See "--Certain Covenants." Other risks considered by
the Ameritech  Board included the  possibility  that: (i) despite the historical
performance  of SBC Common Stock and the historical  relationship  of its market
price to that of Ameritech Common Stock,  the value of the Merger  Consideration
received by Ameritech  shareowners in the Merger (which is determined by a fixed
exchange  ratio) may diminish prior to the Effective Time if the market value of
SBC Common Stock declines  during the period prior to the Effective  Time;  (ii)
the  synergistic  benefits  expected  from the Merger may be more  difficult  to
achieve than anticipated; and (iii) the Merger ultimately may not be consummated
as a result of material adverse conditions imposed by regulatory  authorities or
otherwise.  In the judgment of the Ameritech  Board,  however,  these  potential
risks were more than offset by the  potential  benefits of the Merger  discussed
above.

    Additional Considerations. In the course of its deliberations on the Merger,
the Ameritech Board received and evaluated  reports,  analyses and presentations
from members of Ameritech's  senior  management and from Ameritech's  financial,
legal,  accounting and tax advisors on various  business and financial  matters,
including  comparative   information  on  peer  companies  and  combinations  of
telecommunications companies and information on the results of the due diligence
investigations of SBC.  Additional  factors considered by the Ameritech Board in
determining  whether to approve the Merger Agreement  included:  (i) information
concerning the financial performance and condition,  operations,  cash flows and
business  plans  and  prospects  of  each  company,  and  the  projected  future
performance  of  Ameritech as a separate  entity and of  Ameritech  and SBC on a
combined  basis;  (ii) the current and  historical  market  prices of  Ameritech
Common Stock and SBC Common Stock;  (iii) the opinion of  Ameritech's  financial
advisor, described below, as to the fairness, from a financial point of view, of
the Exchange  Ratio to Ameritech's  shareowners;  (iv) the  improbability  of an
alternative   transaction  that  would  yield  a  superior  value  to  Ameritech
shareowners;  (v) the terms and  conditions  of the Merger  Agreement;  (vi) the
current  industry,  economic and  marketplace  conditions and trends;  (vii) the
likelihood and anticipated timing of receipt of required  regulatory  approvals,
the possible  divestiture  of certain  overlapping  wireless  properties and the
potential  effect  of  the  pendency  of  the  Merger  on  existing   regulatory
proceedings involving Ameritech and its subsidiaries;  (viii) labor relations at
each of the companies;  (ix) SBC's expressed  commitments to continue  following
the  consummation  of the  Merger  Ameritech's  historic  levels  of  charitable
contributions  and community  activities and support  economic  development  and
education  in  Ameritech's   region  consistent  with  Ameritech's   established
commitments  in these areas;  and (x) the expressed  intention of SBC to provide
job  opportunities  through  business  growth  and to avoid  net  reductions  in
employment  levels within  Ameritech's  traditional  local exchange regions as a
result of the Merger, as well as various SBC commitments in the Merger Agreement
with respect to contractual  benefit  obligations and  compensation  and benefit
plans of the Surviving  Corporation.  See  "--Opinions of  Financial  Advisors--
Ameritech" and "--Employee Benefits."

    The foregoing  discussion of the information  and factors  considered by the
Ameritech Board is not intended to be exhaustive, but is believed to include all
material  factors  considered by the Ameritech  Board. In view of the variety of
factors  considered in connection  with its evaluation of the Merger  Agreement,
the Ameritech Board did not consider

                                       25
<PAGE>



it practical to, and did not,  quantify or otherwise  assign relative weights to
the  factors  it  considered  in  reaching  its  determination,  and  individual
Directors may have given different weights to different factors.

    THE  AMERITECH  BOARD HAS  UNANIMOUSLY  APPROVED  THE MERGER  AGREEMENT  AND
UNANIMOUSLY  RECOMMENDS  THAT  AMERITECH  SHAREOWNERS  VOTE FOR  ADOPTION OF THE
MERGER PROPOSAL.

OPINIONS OF FINANCIAL ADVISORS

    SBC

    At the meeting of the SBC Board held on May 10, 1998,  Salomon  Smith Barney
delivered its oral opinion,  subsequently confirmed in writing, that, as of such
date,  the  Exchange  Ratio was fair to SBC from a financial  point of view.  No
limitations were imposed by the SBC Board upon Salomon Smith Barney with respect
to the investigation made or the procedures  followed by Salomon Smith Barney in
rendering its opinion.

    The full text of the written opinion of Salomon Smith Barney,  dated May 10,
1998, which sets forth assumptions made,  matters  considered and limitations on
the review  undertaken in  connection  with the opinion,  is attached  hereto as
Annex B and is incorporated by reference herein. Holders of SBC Common Stock are
urged to, and  should,  read such  opinion in its  entirety.  The summary of the
opinion as set forth in this Joint Proxy  Statement/Prospectus  is  qualified in
its entirety by reference to the full text of such opinion.

    In  connection  with  rendering its opinion,  Salomon Smith Barney  reviewed
certain publicly available information  concerning SBC and Ameritech and certain
other financial  information  concerning SBC and Ameritech,  including financial
forecasts,  that were  provided to Salomon  Smith  Barney by SBC and  Ameritech,
respectively.  Salomon  Smith  Barney  discussed  the past and current  business
operations  and  financial  conditions  of SBC and  Ameritech  as well as  other
matters it believed  relevant to its inquiry,  including matters relating to the
regulatory  approvals  required to consummate the Merger,  with certain officers
and  employees of SBC and  Ameritech,  respectively.  Salomon  Smith Barney also
considered such other information,  financial studies, analyses,  investigations
and financial, economic and market criteria that it deemed relevant.

    In its review and  analysis and in arriving at its  opinion,  Salomon  Smith
Barney  assumed and relied upon the accuracy and  completeness  of the financial
and  other  information   (including  information  relating  to  the  regulatory
approvals  required to consummate the Merger)  reviewed by Salomon Smith Barney,
and it did not assume any  responsibility  for independent  verification of such
information.  With  respect to the  financial  forecasts  of SBC and  Ameritech,
Salomon Smith Barney assumed that such forecasts had been reasonably prepared on
bases  reflecting  the best currently  available  estimates and judgments of the
respective  managements  of  SBC  and  Ameritech  as  to  the  future  financial
performance  of  SBC  or  Ameritech,  respectively,  and  Salomon  Smith  Barney
expressed no opinion with respect to such forecasts or the  assumptions on which
such  forecasts  were based.  Salomon  Smith Barney also assumed that the Merger
will be  consummated  in  accordance  with the  terms of the  Merger  Agreement.
Salomon  Smith  Barney did not make or obtain or assume any  responsibility  for
making or obtaining  any  independent  evaluations  or  appraisals of any of the
assets (including properties and facilities) or liabilities of SBC or Ameritech.

    Salomon Smith Barney's opinion is necessarily  based upon conditions as they
existed and could be  evaluated  on the date  thereof.  Salomon  Smith  Barney's
opinion  does not imply any  conclusion  as to the trading  range for SBC Common
Stock following the  consummation of the Merger,  which may vary depending upon,
among  other  factors,   changes  in  interest  rates,  dividend  rates,  market
conditions,  general  economic  conditions  and  other  factors  that  generally
influence  the price of  securities.  Salomon  Smith  Barney's  opinion does not
address SBC's underlying  business decision to effect the Merger.  Salomon Smith
Barney's  opinion is directed  only to the fairness,  from a financial  point of
view,  of the Exchange  Ratio to SBC and does not  constitute  a  recommendation
concerning  how  holders of SBC Common  Stock  should  vote with  respect to the
transactions contemplated by the Merger Agreement.

    The material  portions of the analyses which were performed by Salomon Smith
Barney in connection with its opinion dated May 10, 1998 are summarized below.

        (i) Historical  Stock Price  Performance.  Salomon Smith Barney reviewed
    the relationship between movements in the closing prices of Ameritech Common
    Stock and SBC Common  Stock with the Salomon  Smith  Barney RHBC (as defined
    below) Index (excluding  Ameritech and SBC, as appropriate) and the Standard
    & Poor's



                                       26

<PAGE>



    Composite  Average for the period from  January 2, 1997 through May 4, 1998,
    the  trading  volume and price  history of  Ameritech  Common  Stock for the
    period from January 2, 1997  through May 1, 1998 and the trading  volume and
    price  history  of SBC  Common  Stock for the  period  from  January 2, 1997
    through May 1, 1998.

        (ii)  Historical  Exchange  Ratio  Analysis.  Salomon  Smith Barney also
    reviewed the  relationship  between the daily  closing  prices of SBC Common
    Stock and  Ameritech  Common  Stock  during the period from  January 1, 1997
    through May 4, 1998 and the implied historical exchange ratios determined by
    dividing  the  price per share of  Ameritech  Common  Stock by the price per
    share of SBC  Common  Stock  (the  "Historical  Exchange  Ratio")  over such
    period.  Salomon  Smith  Barney  calculated  that  during  this  period  the
    Historical Exchange Ratio ranged from a high of 1.191 to a low of 1.004 with
    an average of 1.112. The Exchange Ratio is 1.316.

        (iii) Comparative  Premium Analysis.  Salomon Smith Barney noted that if
    the Merger had closed on May 4, 1998, SBC would have paid a 28.2% premium to
    the Ameritech Common Stock May 1, 1998 closing price, a 30.0% premium to the
    one-week  closing  historical  average  price per share of Ameritech  Common
    Stock and a 24.0%  premium to the  three-month  historical  average  closing
    price per share of  Ameritech  Common  Stock,  in the  latter two cases with
    respect to the period ended May 1, 1998. Salomon Smith Barney compared these
    implied premiums to the implied premiums for similar periods prior to public
    announcement in the following comparable transactions:  Qwest Communications
    International  Inc.'s pending acquisition of LCI International,  Inc., SBC's
    pending  acquisition of SNET,  WorldCom  Inc.'s pending  acquisition of MCI,
    WorldCom,  Inc.'s  acquisition of Brooks Fiber  Properties,  Inc.,  WorldCom
    Inc.'s  acquisition  of MFS  Communications  Co.  and SBC's  acquisition  of
    Pacific Telesis Group. The median premiums in such  transactions  were 35.5%
    to the  previous  trading day  closing  price,  39.1% to the prior  one-week
    historical  average  price  and 47.0% to the  prior  three-month  historical
    average  closing  price per  share.  Salomon  Smith  Barney  noted  that the
    premiums  paid,  assuming  the Merger  had  closed on May 4, 1998,  would be
    consistent with those paid in the comparable transactions discussed above.

        (iv) Ameritech  Segmented Public Market  Analysis.  Salomon Smith Barney
    arrived  at a range of  values  for  Ameritech  by  separately  valuing  its
    telecommunications  business segment ("Ameritech Telco"),  domestic cellular
    segment  ("Ameritech  Cellular"),  domestic PCS business segment ("Ameritech
    PCS"),  directory/publishing  business segment ("Ameritech  Publishing") its
    other business  segments,  including  paging,  security  monitoring,  video,
    leasing segments and  international  investments  (collectively,  "Ameritech
    Other  Assets")  and  aggregating  the  values  determined  for the  various
    business segments. Salomon Smith Barney utilized a public market analysis in
    valuing these business segments. Public market analysis assesses a segment's
    operating  performance  and outlook  relative to a group of publicly  traded
    peer companies to determine an implied  unaffected  market trading value. No
    company used in the public market  analyses  described below is identical to
    the comparable business segment of Ameritech. Accordingly, an examination of
    the  results  of  analyses  described  below  necessarily  involves  complex
    considerations  and  judgments  concerning   differences  in  financial  and
    operating  characteristics  of the  business  segments  and other facts that
    could  affect the public  trading  value of the  companies to which they are
    being compared.

        Ameritech Telco

          Salomon  Smith  Barney  compared  certain  financial   information  of
        Ameritech  Telco with two groups of companies  that Salomon Smith Barney
        believed  to be  appropriate  for  comparison.  The first  group,  which
        Salomon Smith Barney  believed was more closely  comparable to Ameritech
        Telco, included Bell Atlantic Corp., BellSouth Telecommunications, Inc.,
        SBC, USWest,  Inc. and GTE Corporation (the "RBHCs").  The second group,
        which  Salomon  Smith Barney  believed was somewhat  less  comparable to
        Ameritech  Telco,  included Aliant  Communications  Inc.,  ALLTEL Corp.,
        Century Telephone Enterprises,  Inc., Cincinnati Bell Inc. and SNET (the
        "Independent   Telcos").  The  financial  and  valuation  data  for  the
        comparable  companies  were adjusted by Salomon Smith Barney to estimate
        the financial and valuation  characteristics of pure "stripped wireline"
        telecommunications   companies.   Salomon  Smith  Barney   reviewed  the
        multiples  of  firm  value  to 1997  earnings  before  interest,  taxes,
        depreciation  and  amortization  ("EBITDA")  represented  by the trading
        prices of the RBHCs as of May 1, 1998,  which  ranged from 6.2x to 8.2x,
        with a mean of 7.0x and a median of 6.7x, and the  comparable  multiples
        for the Independent Telcos,  which ranged from 6.5x to 8.2x, with a mean
        of 7.4x and a median of 7.3x.  Using this  information and other factors
        relevant in the  valuation  of  Ameritech  Telco,  Salomon  Smith Barney
        determined a valuation range for Ameritech Telco of approximately  $33.6
        billion to $38.7 billion.



                                       27

<PAGE>



       Ameritech Cellular

          Salomon  Smith  Barney  compared  certain  financial   information  of
        Ameritech  Cellular with the following  group of companies  that Salomon
        Smith  Barney  believed  to  be  appropriate  for  comparison:  AirTouch
        Communications Inc., Centennial Cellular Corp., PriCellular Corporation,
        United States Cellular  Corp.,  Vanguard  Cellular  Systems Inc. and 360
        degrees  Communications  Company (the "Cellular Comparable  Companies").
        Salomon Smith Barney  reviewed the multiples of firm value to the latest
        twelve months  ("LTM")  EBITDA  represented by the trading prices of the
        Cellular Comparable Companies,  which ranged from 11.3x to 19.0x, with a
        mean of 14.4x and a median of 13.9x . Using this  information  and other
        factors relevant in the valuation of Ameritech  Cellular,  Salomon Smith
        Barney   determined  a  valuation   range  for  Ameritech   Cellular  of
        approximately $4.0 billion to $4.5 billion.

       Ameritech PCS

          Salomon  Smith  Barney  compared  certain  financial   information  of
        Ameritech PCS with the following  group of companies  that Salomon Smith
        Barney believed to be appropriate for comparison:  Aerial Communications
        Inc., Omnipoint Corp.,  Powertel Inc., Western Wireless Corp. and Nextel
        Communications  Inc.  (the "PCS  Comparable  Companies").  Salomon Smith
        Barney  reviewed  the  multiples of firm value to the number of adjusted
        "population  equivalents"  ("POPs") represented by the trading prices of
        the PCS  Comparable  Companies,  which resulted in a range of $42 to $60
        per POP.  Using  this  information  and other  factors  relevant  in the
        valuation of Ameritech PCS, Salomon Smith Barney  determined a valuation
        range of Ameritech PCS of approximately $288 million to $370 million.

       Ameritech Publishing

          Salomon  Smith  Barney  compared  certain  financial   information  of
        Ameritech  Publishing with the following group of companies that Salomon
        Smith  Barney  believed  to  be  appropriate  for  comparison:   Central
        Newspapers Inc., Dow Jones & Company, Inc., Gannett Co.,  Knight-Ridder,
        Inc.,  McClatchy  Newspapers  Inc., The New York Times Company,  Tribune
        Company,   The  Times  Mirror  Company,  The  Washington  Post  Company,
        Hollinger  International  Inc. and Lee  Enterprises,  Incorporated  (the
        "Publishing  Comparable  Companies").  Salomon Smith Barney reviewed the
        multiples of firm value to LTM EBITDA  represented by the trading prices
        of the Publishing Comparable Companies, which ranged from 7.2x to 13.9x,
        with a mean of 10.5x and a median of 10.3x.  Using this  information and
        other factors relevant in the valuation of Ameritech Publishing, Salomon
        Smith Barney  determined a valuation  range for Ameritech  Publishing of
        approximately $5.5 billion to $6.8 billion.

       Ameritech Other Assets

          Salomon Smith Barney compared certain financial information of certain
        of the  businesses  comprising  Ameritech  Other  Assets  with groups of
        companies  that  Salomon  Smith Barney  believed  were  appropriate  for
        comparison.  In addition,  Salomon Smith Barney valued certain  domestic
        and international minority investments,  including,  without limitation,
        investments  in Belgacom  SA,  MATAV Rt.,  Tele Danmark A/S, and NetCom,
        based on the trading prices of such entities. These analyses resulted in
        a valuation  range for  Ameritech  Other Assets of  approximately  $10.0
        billion to $10.9 billion.

       Total Ameritech Public Market Valuation

          By combining the stand-alone valuations for Ameritech Telco, Ameritech
        Cellular, Ameritech PCS, Ameritech Publishing and Ameritech Other Assets
        described  above and  making  certain  adjustments  for debt,  preferred
        securities, cash and cash equivalents,  investments and option proceeds,
        this analysis  resulted in a valuation range for  Ameritech's  aggregate
        equity of  approximately  $44.1 billion to $52.2  billion,  or $39.70 to
        $46.91  per  share  based on the  number  of  fully  diluted  shares  of
        Ameritech Common Stock as of May 1, 1998.

        (v) Ameritech  Segmented  Discounted  Cash Flow Analysis.  Salomon Smith
    Barney performed a discounted cash flow analysis based on projected earnings
    and capital  requirements  and the  subsequent  cash flows  generated by the
    business segments of Ameritech.  Salomon Smith Barney derived ranges of firm
    values for Ameritech's  business  segments based upon the aggregate  present
    value of each segment's eleven-year stream (to 2008) of



                                       28

<PAGE>

    projected cash flows (without giving effect to the Merger). In general,  the
    growth rates for each segment's  projected cash flow for the years from 2009
    to 2017 were  reduced or  increased  to reach the  assumed  2017  perpetuity
    growth rate. For Ameritech  Telco (which  excludes long  distance),  Salomon
    Smith Barney applied  discount rates  reflecting a weighted  average cost of
    capital  ("WACC")  ranging from 8.75% to 9.75% and  perpetuity  growth rates
    ranging  from  2.00% to  3.00%,  which  resulted  in a  valuation  range for
    Ameritech  Telco of $42.5 billion to $46.2  billion.  For the Ameritech long
    distance  business  segment,  Salomon Smith Barney  applied  discount  rates
    reflecting a WACC ranging from 10.50% to 11.50% and perpetuity  growth rates
    ranging  from  2.50% to  3.50%,  which  resulted  in a  valuation  range for
    Ameritech  long  distance of $3.2 billion to $3.6  billion.  For the segment
    consisting of Ameritech  Cellular along with  Ameritech's  paging  business,
    Salomon Smith Barney applied  discount rates  reflecting a WACC ranging from
    10.00% to 11.00% and  perpetuity  growth rates  ranging from 2.50% to 3.50%,
    which resulted in a valuation range for such segment and Ameritech's  paging
    business of $6.4 billion to $6.9 billion.  For Ameritech PCS,  Salomon Smith
    Barney  applied  discount  rates  reflecting  a WACC  ranging from 12.50% to
    13.50% and  perpetuity  growth  rates  ranging  from  2.50% to 3.50%,  which
    resulted  in a valuation  range for  Ameritech  PCS of $366  million to $434
    million.  For Ameritech  Publishing,  Salomon Smith Barney applied  discount
    rates  reflecting a WACC ranging from 9.00% to 10.00% and perpetuity  growth
    rates ranging from 1.00% to 2.00%,  which resulted in a valuation  range for
    Ameritech  Publishing  of $6.1 billion to $6.6  billion.  For the  Ameritech
    security  monitoring  segment,  Salomon Smith Barney applied  discount rates
    reflecting a WACC ranging from 10.50% to 11.50% and perpetuity  growth rates
    ranging  from 3.00% to 4.00%,  which  resulted in a valuation  range for the
    Ameritech  security  monitoring  segment of $1.9  billion  to $2.1  security
    monitoring  segment of $1.9 billion to $2.1 billion.  For the other business
    segments and assets of Ameritech, including, without limitation, the leasing
    business  segment,  the  international  investments and corporate  overhead,
    Salomon Smith Barney derived a range of net values based on other  valuation
    methodologies  discussed  above under  "Ameritech  Segmented  Public  Market
    Analysis" of $5.1 billion to $5.5  billion.  By  combining  the  stand-alone
    discounted  cash flow valuations for the business  segments  described above
    and  making  certain   adjustments   for  debt,   preferred   securities  of
    subsidiaries,  cash and cash equivalents,  investments,  option proceeds and
    minority  investments  in Ameritech  Cellular,  this analysis  resulted in a
    valuation  range for  Ameritech's  equity  value of $55.4  billion  to $60.9
    billion,  or $49.80 to $54.79 per share based on the number of fully-diluted
    shares of Ameritech Common Stock as of May 1, 1998.

        (vi)  Consolidated  Public  Market  Comparison.   Salomon  Smith  Barney
    compared the price to earnings per share ("EPS") multiples ("P/E Multiples")
    of SBC and Ameritech with the P/E Multiples of the RBHCs.  The P/E Multiples
    of the RHBCs ranged from 19.9x to 22.8x based on 1997 EPS,  with a median of
    20.7x,  from 17.9x to 20.4x based on 1998  analysts'  estimated  EPS, with a
    median of 19.0x,  and from 16.3x to 18.4x based on 1999 analysts'  estimated
    EPS, with a median of 17.1x.  The P/E  Multiples  for Ameritech  were 20.3x,
    18.1x and 16.8x based on 1997 EPS, 1998 estimated EPS and 1999 estimated EPS
    (based on First Call  estimates),  respectively,  representing a discount to
    the RBHCs median of 1.8%, 4.6% and 1.7% for such periods,  respectively. The
    P/E  Multiples  for SBC were 23.9x,  20.4x and 18.1x based on 1997 EPS, 1998
    estimated  EPS and 1999  estimated  EPS  (based  on First  Call  estimates),
    respectively,  representing a premium to the RHBCs median of 15.2%, 7.3% and
    6.1% for such periods, respectively.

        (vii) SBC Segmented Public Market Analysis. Salomon Smith Barney arrived
    at a range of values for SBC by  separately  valuing its  telecommunications
    business segment ("SBC Telco"),  domestic cellular segment ("SBC Cellular"),
    domestic PCS business  segment  ("SBC PCS"),  directory/publishing  business
    segment  ("SBC  Publishing")  and its  other  business  segments,  including
    domestic video businesses,  Nevada Bell, SNET and international  investments
    (collectively, "SBC Other Assets") and aggregating the values determined for
    the various business segments. Salomon Smith Barney utilized a public market
    analysis in valuing these business segments. Public market analysis assesses
    a  segment's  operating  performance  and  outlook  relative  to a group  of
    publicly  traded peer  companies to determine an implied  unaffected  market
    trading value. No company used in the public market analyses described below
    is identical to the  comparable  business  segment of SBC.  Accordingly,  an
    examination of the results of analyses described below necessarily  involves
    complex considerations and judgments concerning differences in financial and
    operating  characteristics  of the  business  segments  and other facts that
    could  affect the public  trading  value of the  companies to which they are
    being compared.

        SBC Telco

          Salomon Smith Barney  compared  certain  financial  information of SBC
        Telco with two groups of companies that Salomon Smith Barney believed to
        be  appropriate  for  comparison.  The first group,  which Salomon Smith
        Barney believed was more closely  comparable to SBC Telco, was the RBHCs
        (excluding  SBC and including  Ameritech)  and the second  group,  which
        Salomon Smith Barney believed was somewhat less comparable to

                                       29
<PAGE>



        SBC Telco, was the Independent  Telcos. The financial and valuation data
        of the  comparable  companies  were  adjusted by Salomon Smith Barney to
        estimate the financial and valuation  characteristics  of pure "stripped
        wireline" telecommunications  companies.  Salomon Smith Barney reviewed
        the  multiples of firm value to 1997 EBITDA  represented  by the trading
        prices of the RHBCs, which ranged from 6.2x to 8.2x, with a mean of 6.9x
        and a median of 6.7x, and the comparable  multiples for the  Independent
        Telcos, which ranged from 6.5x to 8.2x, with a mean of 7.4x and a median
        of 7.3x.  Using  this  information  and other  factors  relevant  in the
        valuation  of SBC Telco,  Salomon  Smith  Barney  determined a valuation
        range for SBC Telco of $52.1 billion to $60.1 billion.

       SBC Cellular

          Salomon Smith Barney  compared  certain  financial  information of SBC
        Cellular with the Cellular  Comparable  Companies.  Salomon Smith Barney
        reviewed the  multiples of firm value to LTM EBITDA  represented  by the
        trading prices of the Cellular Comparable  Companies,  which ranged from
        11.3x to 19.0x,  with a mean of 14.4x and a median of 13.9x.  Using this
        information and other factors relevant in the valuation of SBC Cellular,
        Salomon  Smith Barney  determined a valuation  range for SBC Cellular of
        $10.4 billion to $11.5 billion.

       SBC PCS

          Salomon Smith Barney compared certain financial information of SBC PCS
        with the PCS  Comparable  Companies.  Salomon Smith Barney  reviewed the
        multiples of firm value to the number of adjusted  POPs  represented  by
        the trading prices of the PCS Comparable Companies,  which resulted in a
        range of $42 to $60 per POP.  Using this  information  and other factors
        relevant in the valuation of SBC PCS, Salomon Smith Barney  determined a
        valuation range for SBC PCS of $1.6 billion to $2.3 billion.

       SBC Publishing

          Salomon Smith Barney  compared  certain  financial  information of SBC
        Publishing  with the  Publishing  Comparable  Companies.  Salomon  Smith
        Barney reviewed the multiples of firm value to LTM EBITDA represented by
        the trading prices of the Publishing Comparable Companies,  which ranged
        from  7.2x to 13.9x,  with a mean of 10.5x and a median of 10.3x.  Using
        this  information  and other  factors  relevant in the  valuation of SBC
        Publishing,  Salomon Smith Barney  determined a valuation  range for SBC
        Publishing of $8.4 billion to $10.6 billion.

       SBC Other Assets

          Salomon Smith Barney compared certain financial information of certain
        SBC business segments in North America,  including,  without limitation,
        wireless  cable,  Media  Ventures  Hauser and Nevada Bell with groups of
        companies  that  Salomon  Smith Barney  believed  were  appropriate  for
        comparison.  In addition,  Salomon Smith Barney valued certain  domestic
        and   international   investments,    including,   without   limitation,
        investments in Cegetel,  Shinsegi,  MTN,  Telmex,  Aurec,  VTR, diAx and
        Telkom SA, based on other valuation methodologies  appropriate for SBC's
        percentage ownership. Salomon Smith Barney also valued SNET based on the
        exchange  ratio  for the  pending  acquisition  of  SNET  by SBC.  These
        analyses  resulted  in a  valuation  of SBC Other  Assets  ranging  from
        approximately $14.2 billion to $15.5 billion.

       Total SBC Public Market Valuation

          By combining the stand-alone  valuations for SBC Telco,  SBC Cellular,
        SBC PCS, SBC Publishing and SBC Other Assets  described above and making
        certain adjustments for debt, preferred securities of subsidiaries, cash
        and cash  equivalents,  investments and option  proceeds,  this analysis
        resulted  in a  valuation  range  for  SBC's  aggregate  equity of $71.1
        billion to $84.4  billion,  or $35.86 to $42.57  per share  based on the
        number of  fully-diluted  shares of SBC  Common  Stock as of May 1, 1998
        (including  the  issuance of shares of SBC Common  Stock  expected to be
        issued in the SNET acquisition).

        (viii) SBC Segmented Discounted Cash Flow Analysis. Salomon Smith Barney
    performed a discounted  cash flow analysis  based on projected  earnings and
    capital requirements and the subsequent cash flows generated by the business
    segments of SBC.  Salomon  Smith  Barney  derived  ranges of firm values for
    SBC's business



                                       30

<PAGE>



    segments   based  upon  the  aggregate   present  value  of  each  segment's
    eleven-year  stream (to 2008) of projected cash flows (without giving effect
    to the Merger).  In general,  the growth rates for each segment's  projected
    cash flow for the years from 2009 to 2017 were reduced or increased to reach
    the assumed 2017 perpetuity  growth rate. For SBC Telco (which excludes long
    distance),  Salomon Smith Barney applied  discount  rates  reflecting a WACC
    ranging from 8.75% to 9.75% and  perpetuity  growth rates ranging from 2.00%
    to 3.00%, which resulted in a valuation range for SBC Telco of $67.2 billion
    to $72.9 billion.  For the SBC long distance  segment,  Salomon Smith Barney
    applied  discount rates  reflecting a WACC ranging from 10.50% to 11.50% and
    perpetuity  growth rates  ranging from 2.50% to 3.50%,  which  resulted in a
    valuation  range for SBC long distance of $5.9 billion to $6.6 billion.  For
    the  segment  consisting  of SBC  Cellular,  Salomon  Smith  Barney  applied
    discount  rates  reflecting  a  WACC  ranging  from  10.00%  to  11.00%  and
    perpetuity  growth rates  ranging from 2.50% to 3.50%,  which  resulted in a
    valuation range for such segment of $11.9 billion to $13.2 billion.  For SBC
    PCS,  Salomon Smith Barney applied  discount rates reflecting a WACC ranging
    from 12.50% to 13.50% and  perpetuity  growth  rates  ranging  from 2.50% to
    3.50%,  which  resulted in a valuation  range for SBC PCS of $2.4 billion to
    $2.6 billion.  For SBC  Publishing,  Salomon Smith Barney  applied  discount
    rates  reflecting a WACC ranging from 9.00% to 10.00% and perpetuity  growth
    rates ranging from 1.00% to 2.00%,  which resulted in a valuation  range for
    SBC  Publishing  of $9.3 billion to $10.2  billion.  For the other  business
    segments  and assets of SBC,  including,  without  limitation,  the domestic
    video business segment,  the international  investments,  SNET and corporate
    overhead,  Salomon  Smith  Barney  derived  a range of net  values  based on
    various  valuation  methodologies  of  $4.6  billion  to  $5.4  billion.  By
    combining the  stand-alone  discounted cash flow valuations for the business
    segments described above and making certain adjustments for debt,  preferred
    securities  of  subsidiaries,  cash and cash  equivalents,  investments  and
    option  proceeds,  this  analysis  resulted in a  valuation  range for SBC's
    aggregate equity of $92.7 billion to $103.5 billion, or $46.77 to $52.22 per
    share based on the number of fully-diluted  shares of SBC Common Stock as of
    May 1, 1998  (including  the issuance of shares of SBC Common Stock expected
    to be issued in the SNET acquisition).

        (ix)  Synergies.  Salomon  Smith Barney  reviewed the synergy  estimates
    provided by the  management  of SBC (the "SBC Synergy  Estimates")  prepared
    after the management of SBC held discussions and exchanged  information with
    the  management of  Ameritech.  The SBC Synergy  Estimates  reflect only the
    incremental  benefits  expected by the  management of SBC to result from the
    Merger  compared to SBC on a stand-alone  basis (but adjusted on a pro forma
    basis as if SBC had completed its pending  acquisition of SNET), and include
    revenue,   expense  and  capital  expenditure  synergies.  The  SBC  Synergy
    Estimates assumed full potential synergies would not be achieved until 2003.
    Salomon Smith Barney then  estimated the present value of the future streams
    of after-tax cash flows generated by those synergies,  net of implementation
    costs,  by applying  discount  rates  reflecting a WACC ranging from 9.0% to
    10.0% to such  cash  flows  through  2008 and by  adding  a  terminal  value
    determined by projecting a range of nominal  perpetual  synergy growth rates
    ranging from 1.5% to 2.5%. This analysis resulted in a net present value for
    the  synergies of $16.0  billion to $19.0  billion or $4.64 per share of SBC
    Common  Stock to $5.51 per share of SBC Common Stock  outstanding  following
    the  consummation  of the Merger on a fully  diluted  basis  (including  the
    issuance  of shares of SBC Common  Stock  expected  to be issued in the SNET
    acquisition).  For a more detailed discussion of SBC management's  projected
    synergies   resulting  from  the  Merger,   see  "Reasons  for  the  Merger;
    Recommendation  of the  Boards of  Directors -- SBC -- Synergistic  Benefits
    Resulting from the Merger."

        (x) Pro Forma EPS Impact to SBC.  Salomon Smith Barney reviewed  certain
    pro forma financial  effects of the Merger on the estimated EPS of SBC.Using
    SBC management projections, Salomon Smith Barney compared the EPS of SBC, on
    a stand-alone basis assuming the Merger was not consummated (but adjusted on
    a pro forma basis as if SBC had completed its pending  acquisition of SNET),
    to the estimated EPS of SBC  following  consummation  of the Merger on a pro
    forma basis.  Salomon  Smith  Barney's  analysis  assumed that each share of
    Ameritech  Common  Stock  would be  exchanged  for a number of shares of SBC
    Common Stock equal to the Exchange Ratio and gave effect to revenue, expense
    and capital  expenditure  synergies  along with certain  costs  necessary to
    achieve those synergies referred to above.  Based on such analysis,  Salomon
    Smith Barney  determined  that the proposed  Merger would be dilutive to the
    EPS of SBC on a pro  forma  basis by  approximately  7.3% in 2000,  would be
    slightly dilutive in 2001 and would be accretive thereafter.

    The  preparation of a fairness  opinion is a complex process not susceptible
to partial  analysis or summary  descriptions.  The summary set forth above does
not purport to be a complete  description  of the  analyses  underlying  Salomon
Smith  Barney's  opinion or its  presentation  to the Board of Directors of SBC.
Salomon Smith Barney  believes that its analysis and the summary set forth above
must be  considered as a whole and that  selecting  portions of its analyses and
the factors  considered  by it,  without  considering  all analyses and factors,
could create an incomplete view of the processes underlying its opinion.


                                       31

<PAGE>

    In performing its analyses,  Salomon Smith Barney made numerous  assumptions
with respect to industry performance,  general business,  financial,  market and
economic  conditions and other matters,  many of which are beyond the control of
SBC or Ameritech.  The analyses  which  Salomon  Smith Barney  performed are not
necessarily  indicative of actual values or actual future results,  which may be
significantly  more or less  favorable  than  suggested by such  analyses.  Such
analyses were prepared solely as part of Salomon Smith Barney's  analysis of the
fairness,  from a financial  point of view,  of the  Exchange  Ratio to SBC. The
analyses  do not  purport to be  appraisals  or to reflect the prices at which a
company might  actually be sold or the prices at which any  securities may trade
at the present time or at any time in the future.

    Pursuant to an engagement  letter (the "Engagement  Letter") dated April 20,
1998, SBC agreed to pay Salomon Smith Barney a fee of: (a) $1 million, which was
paid promptly after execution of the Engagement  Letter;  plus (b) an additional
fee of $4 million  which was paid  promptly  following  execution  of the Merger
Agreement;  plus  (c) an  additional  fee of $28  million  contingent  upon  the
consummation  of the Merger and payable  promptly at the closing thereof (or, if
following or in connection  with the  termination  or  abandonment of the Merger
prior to its consummation SBC receives any "break-up",  "termination" or similar
fee or payment from Ameritech, an additional cash fee equal to the lesser of $20
million and 2.5% of the excess of the aggregate  amount of all such  termination
fees and expense reimbursements over SBC's direct out-of-pocket  expenses).  SBC
also agreed, under certain circumstances,  to reimburse Salomon Smith Barney for
certain  out-of-pocket  expenses  incurred by Salomon Smith Barney in connection
with the  Merger,  and agreed to  indemnify  Salomon  Smith  Barney and  certain
related persons against certain  liabilities,  including  liabilities  under the
Federal securities laws, relating to or arising out of its engagement.

    Salomon Smith Barney is an  internationally  recognized  investment  banking
firm  that  provides  financial  services  in  connection  with a wide  range of
business transactions.  As part of its business,  Salomon Smith Barney regularly
engages in the  valuation of companies and their  securities in connection  with
mergers  and  acquisitions,  negotiated  underwritings,   competitive  biddings,
secondary  distributions of listed and unlisted  securities,  private placements
and for other purposes.  In the past,  Salomon Smith Barney has rendered certain
investment  banking and  financial  advisory  services to SBC for which  Salomon
Smith Barney  received  customary  compensation.  In  addition,  in the ordinary
course  of its  business,  Salomon  Smith  Barney  and its  current  and  future
affiliates (including Travelers Group Inc.) may actively trade the securities of
SBC and  Ameritech  for its own account and the accounts of its  customers  and,
accordingly,  may at any time hold a long or short position in such  securities.
Salomon Smith Barney and its current and future affiliates  (including Travelers
Group Inc.) may have other business  relationships with SBC, Ameritech and their
respective affiliates.  The SBC Board retained Salomon Smith Barney based on its
expertise in the valuation of companies as well as its substantial experience in
transactions such as the Merger.


  Ameritech

    Goldman  Sachs  delivered  its written  opinion,  dated May 10, 1998, to the
Ameritech  Board that as of such date, the Exchange Ratio pursuant to the Merger
Agreement  is fair from a financial  point of view to the  holders of  Ameritech
Common Stock.

    The full text of the written  opinion of Goldman Sachs,  dated May 10, 1998,
which sets forth  assumptions  made,  matters  considered and limitations on the
review undertaken in connection with the opinion, is attached as Annex C to this
Joint Proxy  Statement/Prospectus  and is incorporated herein by reference.  The
summary of the Opinion in this Joint Proxy  Statement/Prospectus is qualified in
its  entirety  by  reference  to the full text of the  opinion.  Shareowners  of
Ameritech are urged to, and should, read such opinion in its entirety.

    In connection with its opinion,  Goldman Sachs reviewed, among other things,
the Merger  Agreement;  Annual Reports to shareowners and Annual Reports on Form
10-K of Ameritech  and SBC for the five years ended  December 31, 1997;  certain
interim reports to shareowners  and Quarterly  Reports on Form 10-Q of Ameritech
and SBC; certain other communications from Ameritech and SBC to their respective
shareowners; and certain internal financial analyses and forecasts for Ameritech
and SBC prepared by their respective managements. Goldman Sachs held discussions
with members of the senior  management  of Ameritech  and SBC regarding the past
and current business operations,  financial  condition,  and future prospects of
their respective companies. Goldman Sachs also held discussions with members of

                                       32
<PAGE>

the senior  management of Ameritech  and SBC  regarding the strategic  rationale
for, and  potential  benefits of, the  transactions  contemplated  by the Merger
Agreement,  including a discussion of potential synergies expected to be derived
as a  result  of the  transactions contemplated  by  the  Merger  Agreement.  In
addition,  Goldman Sachs  reviewed the reported  price and trading  activity for
Ameritech  Common Stock and SBC Common  Stock,  compared  certain  financial and
stock market  information  for  Ameritech and SBC with similar  information  for
certain other  companies the securities of which are publicly  traded,  reviewed
the  financial   terms  of  certain   recent   business   combinations   in  the
telecommunications  industry  specifically and in other industries generally and
performed such other studies and analyses as it considered appropriate.

    Goldman  Sachs  relied  upon the  accuracy  and  completeness  of all of the
financial  and other  information  reviewed by it and assumed such  accuracy and
completeness for purposes of rendering its opinion.  In addition,  Goldman Sachs
did  not  make  an  independent  evaluation  or  appraisal  of  the  assets  and
liabilities of Ameritech or SBC or any of their  subsidiaries  and Goldman Sachs
has not been furnished with any such evaluation or appraisal. Goldman Sachs also
assumed  that the Merger will be accounted  for as a pooling of interests  under
generally accepted accounting  principles.  Goldman Sachs' advisory services and
the  opinion  of  Goldman  Sachs  referred  to  herein  were  provided  for  the
information  and  assistance  of the  Ameritech  Board  in  connection  with its
consideration of  the  transactions  contemplated by the Merger  Agreement.  The
opinion of Goldman Sachs referred to herein does not constitute a recommendation
as to how any  Ameritech  shareowner  should  vote with  respect  to the  Merger
Agreement.


    The  following  is a summary of certain of the  financial  analyses  used by
Goldman Sachs in connection  with providing its written opinion to the Ameritech
Board:

1.  Historical  Stock Price Analysis.  Goldman Sachs reviewed  market  valuation
    information for Ameritech,  SBC, Bell Atlantic Corp., BellSouth Corporation,
    GTE Corporation and US West Communications, Inc. (the "Selected Companies").
    This analysis  indicated P/E Multiples for the Selected  Companies  based on
    estimated  1998 and 1999 EPS  ranging  from  18.2x to 21.2x with a median of
    19.5x 1998 EPS,  and ranging from 16.7x to 19.2x with a median of 17.3x 1999
    EPS,  compared  with  P/E  Multiples  for  Ameritech  of  18.9x  and  17.1x,
    respectively in 1998 and 1999, based on the latest estimates provided by the
    Institutional  Brokers  Estimate  Service  ("IBES").  IBES is a data service
    which monitors and publishes a compilation of earnings estimates produced by
    selected  research  analysts on companies of interest to investors.  Goldman
    Sachs  performed a shareowner  return on common stock  analysis as of May 4,
    1998 for the Selected Companies (excluding US West Communications, Inc., but
    including AT&T Corp.), assuming the re-investment of dividends and excluding
    spin-offs.  This  analysis  indicated a total  return  ranging from 79.3% to
    214.0% over the five years preceding May 4, 1998,  compared with a return of
    183.8% for  Ameritech,  a total return ranging from 90.0% to 140.8% over the
    three  years  preceding  May 4, 1998,  compared  with a return of 115.1% for
    Ameritech, and a return ranging from 33.8% to 89.5% over the preceding year,
    compared  with a return  of 48.8%  for  Ameritech.  Goldman  Sachs  reviewed
    historical closing prices for Ameritech Common Stock from May 5, 1995 to May
    1, 1998.  This  analysis  showed that the  Ameritech  Common Stock price had
    increased  over this period  from $22.75 per share to $43.125 per share,  as
    adjusted  to give  effect  to stock  splits.  Goldman  Sachs  also  reviewed
    historical  implied  exchange  ratios based on market  prices for  Ameritech
    Common Stock and SBC Common  Stock,  weekly from May 5, 1995 to May 1, 1998.
    This analysis  showed implied  exchange  ratios  ranging from  approximately
    0.925 to approximately  1.200 and an implied exchange ratio of approximately
    1.025 at May 1,1998.

2.  Comparable  Transactions  Analysis.  Goldman  Sachs  reviewed  and  compared
    certain  P/E  Multiples  relative  to the  merger of NYNEX  Corporation  and
    Atlantic Corp. on April 22, 1996 (the "NYNEX Merger") and the acquisition of
    Pacific  Telesis  Group by SBC on April 1, 1996 (the "Pactel  Acquisition"),
    and P/E  Multiples  relative to the Merger,  using for both the NYNEX Merger
    and the Pactel  Acquisition  P/E  Multiples  based on  pre-announcement  and
    post-announcement  stock prices,  and for the Merger, P/E Multiples based on
    stock  prices as of May 4, 1998,  of $44.125 per share of  Ameritech  Common
    Stock and $43.125 per share of SBC Common Stock, and, in each case, based on
    the latest IBES estimates of EPS. This comparison demonstrated for the NYNEX
    Merger,  the Pactel  Acquisition  and the Merger,  respectively,  based upon
    exchange   ratios  of  0.768x,   0.733x  and   1.316x,   respectively:   (i)
    pre-announcement  P/E Multiples for the acquired company of 14.9x, 11.1x and
    18.9x based on calendar  year-end earnings  estimates;  (ii) transaction P/E
    Multiples  for the  acquired  company  of 14.0x,  15.4x  and 24.3x  based on
    calendar year-end earnings estimates (using

                                       33

<PAGE>

    announcement  stock prices for the NYNEX Merger and Pactel  Acquisition  and
    stock prices as of May 4, 1998 for the Merger); (iii) acquiror P/E Multiples
    based on stock  prices at  announcement  for the NYNEX Merger and the Pactel
    Acquisition  and as of May 4, 1998 for the Merger of 15.5x,  15.3x and 20.9x
    based on calendar year-end earnings estimates; and (iv) premiums to acquiror
    P/E Multiples of (9.4)%, 0.5% and 15.9% based on calendar year- end earnings
    estimates.  In each of (i) through (iv) above,  year-end earnings  estimates
    were based on latest IBES estimates for the then current fiscal year of each
    company. Goldman Sachs also performed a contribution analysis exchange ratio
    comparison  for the NYNEX  Merger,  the Pactel  Acquisition  and the Merger,
    based on (i) IBES estimates for the then current fiscal year of each company
    as of April 1996 for the NYNEX Merger and the Pactel  Acquisition  and as of
    April 1998 for the  Merger,  (ii)  closing  prices of  $44.125  per share of
    Ameritech  Common Stock and $43.125 per share of SBC Common Stock, and (iii)
    exchange  ratios of  0.768,  0.733 and  1.316,  respectively,  for the NYNEX
    Merger,  the Pactel  Acquisition and the Merger.  Such analysis  indicated a
    premium (discount) to net income  contribution  analysis of (9.1)%, 0.3% and
    15.8%,  respectively,  for the NYNEX Merger,  the Pactel Acquisition and the
    Merger.

3.  Synergy  Analysis.  Goldman  Sachs  performed  an analysis of the  synergies
    estimated by the  management  of Ameritech to be  achievable  following  the
    Merger,  assuming that 40% of the projected  synergies would be generated in
    1999, 70% in 2000,  90% in 2001 and 100% in 2002. The analysis  showed (i) a
    range of  incremental  annual  pre-tax  earnings of $1,827 million to $2,722
    million, (ii) annual capital expenditure synergies ranging from $640 million
    to $1,030 million and (iii) total annual cash flow improvement  ranging from
    $2,467  million to $3,752  million.  For  purposes of the analysis set forth
    below,  Goldman Sachs used  anticipated  synergies of $2,275 million,  which
    constitutes the mid-point of the range of incremental  pre-tax  earnings set
    forth in (i) above.

4.  Contribution  Analysis.   Goldman  Sachs  reviewed  certain  historical  and
    estimated future  operating and financial  information  (including  revenue,
    EBIT and net income) for Ameritech and SBC and the relative  contribution of
    Ameritech and SBC to the combined company,  based on an average of estimates
    provided by research  analysts'  reports that were used by Goldman Sachs and
    on estimates  provided by  management  of Ameritech  and SBC.  This analysis
    indicated,  among other things,  that Ameritech would contribute for each of
    1997,  1998  and  1999,  (i)  39%,  39%  and 39% of  revenue,  respectively,
    according to research  analysts'  estimates and management  estimates,  (ii)
    38%,  38% and 37% of EBIT,  respectively,  according  to research  analysts'
    estimates  (or  38%,  37% and 36%,  respectively,  according  to  management
    estimates),  and  (iii)  41%,  40%  and  40%  of net  income,  respectively,
    according   to  research   analysts'   estimates   (or  41%,  40%  and  38%,
    respectively,  according  to  management  estimates),  as  compared  with an
    implied  ownership by Ameritech  shareowners of 44.1% of the equity value of
    the  combined  company  based on the  Exchange  Ratio.  Goldman  Sachs  also
    performed an analysis of the relative  estimated  contribution  of Ameritech
    and SBC to the  combined  company  on a pro forma  basis in 1998  before and
    after taking into account any of the possible  benefits  that  management of
    Ameritech  estimates  may be  realized  following  the  Merger,  based on an
    average of estimates provided by research analysts. This analysis indicated,
    among other things,  that  Ameritech  would  contribute  (i) 37.4% of EBITDA
    (33.3% after taking into account the benefits  that  management of Ameritech
    estimates may be realized  following the Merger) as compared with an implied
    ownership of 42.9% of the  combined  levered  company  based on the Exchange
    Ratio,  (ii) 38% of EBIT (31.5% after taking into account the benefits  that
    management  of  Ameritech  estimates  may be  realized  from the  Merger) as
    compared with an implied  ownership of 42.9% of the combined levered company
    based on the  Exchange  Ratio and (iii)  40.5% of net  income  (33.1%  after
    taking into account the benefits that management of Ameritech  estimates may
    be  realized  from the  Merger) as  compared  with an implied  ownership  by
    Ameritech  shareowners of 44.1% of the equity value of the combined  company
    based on the Exchange Ratio.

5.  Pro Forma Merger  Analysis.  Goldman Sachs  performed an analysis of the pro
    forma EPS impact of the Merger on the Ameritech  shareowners,  based on IBES
    estimates and on estimates  provided by management of Ameritech and SBC. For
    purposes  of  this  analysis,  Goldman  Sachs  used  estimates  provided  by
    management of Ameritech that the Merger would generate pre-tax  synergies of
    $910 million in 1999 and $2,275  million in 2000.  This analysis  showed pro
    forma EPS for  Ameritech  shareowners,  as adjusted by the  Exchange  Ratio,
    before giving effect to the synergies that management of Ameritech estimates
    will be  realized  from the  Merger,  of $2.85  and  $3.08 in 1999 and 2000,
    respectively,  based on IBES estimates ($3.00 and $3.63, respectively, based
    on management  estimates) and based on a pro forma ownership of 44.1% of the
    combined  entity at the  Exchange  Ratio.  Such pro forma EPS  represent  an
    accretion of 10.5% and 10.6%, respectively,  over estimated EPS of Ameritech
    Common  Stock on a stand alone  basis,  based on IBES  estimates  (15.7% and
    21.9%, respectively,  based on management estimates). After giving effect to
    such synergies, this analysis showed pro

                                       34

<PAGE>
    forma EPS for Ameritech  Common Stock, as adjusted by the Exchange Ratio, of
    $3.07  and  $3.63 in 1999 and 2000,  respectively,  based on IBES  estimates
    ($3.21 and $4.18,  respectively,  based on management  estimates).  Such pro
    forma EPS represent an accretion of 19.0% and 30.1%, respectively,  over EPS
    of Ameritech  Common Stock on a stand alone basis,  based on IBES  estimates
    (24.1%   and   40.2%,   respectively,   based  on   management   estimates).
    Comparatively,  an analysis of the pro forma EPS impact of the NYNEX  Merger
    and  the  Pactel   Acquisition,   assuming  that  these   acquisitions  were
    consummated  using  the  pooling  of  interests  method  of  accounting  and
    generated no  synergies,  indicated  (i) an EPS  accretion for Bell Atlantic
    shareowners  of 3.8% in  1997  and  4.5% in  1998  and  dilution  for  NYNEX
    shareowners  of (4.6)% in 1997 and (5.4)% in 1998 and (ii) EPS  dilution for
    SBC  shareowners  of (3.8)% in 1997 and (7.3)% in 1998 and an accretion  for
    Pacific Telesis Group shareowners of 8.4% in 1997 and 18.1% in 1998.

6.  Present Values of Future  Performance  Analysis.  Goldman Sachs performed an
    analysis of the present value at May 1, 1998 of the  potential  future price
    per share of  Ameritech  Common  Stock in 2000  (plus the  present  value of
    quarterly dividends to be received by Ameritech shareowners from May 1, 1998
    through  December  31,  2000)  using IBES EPS  estimates  and EPS  estimates
    provided by  management of Ameritech and SBC, (i) on a stand alone basis and
    on a combined  basis with SBC,  both before and after  giving  effect to the
    synergies that management of Ameritech  estimates may be realized  following
    the  Merger,  (ii)  assuming  that  until  the end of 1999  the  holders  of
    Ameritech Common Stock will receive  dividends at a rate based on a dividend
    growth rate of 5.5% according to the five year historical  average  dividend
    growth rate of the  Ameritech  Common Stock and after such date will receive
    dividends as projected for the year 2000 by SBC  management,  (iii) assuming
    synergies  of $2,275  million  in 2000 and (iv)  assuming  an  ownership  by
    Ameritech  shareowners of 44.1% of the equity value of the combined  company
    (based on the Exchange  Ratio).  Goldman Sachs  calculated the present value
    per share of  Ameritech  Common  Stock based on year 2000  estimated  EPS by
    applying  discount  rates of 9.0%,  10.0%  and 11.0%  and P/E  Multiples  to
    estimated  EPS in the year 2000 of 16.0x,  18.0x and  20.0x.  This  analysis
    indicated  present  values per share of  Ameritech  Common Stock (i) ranging
    from $36.61 to $47.23,  based on IBES estimates ($38.91 to $50.25,  based on
    estimates provided by management of Ameritech) if Ameritech is considered on
    a stand alone  basis,  (ii)  ranging  from  $40.14 to $51.87,  based on IBES
    estimates  ($46.77 to $60.57,  based on estimates  provided by management of
    Ameritech and SBC) if Ameritech is considered on a combined  basis with SBC,
    but before  giving  effect to the  synergies  that  management  of Ameritech
    estimates  will be realized  following  the Merger,  and (iii)  ranging from
    $46.73  to  60.52,  based on IBES  estimates  ($53.36  to  $69.22,  based on
    estimates  provided by  management  of  Ameritech  and SBC) if  Ameritech is
    considered  on a  combined  basis  with SBC and after  giving  effect to the
    synergies that management of Ameritech  estimates will be realized following
    the Merger.

7.  Discounted  Cash Flow Analysis.  Goldman Sachs  performed a discounted  cash
    flow  analysis  after  giving  effect to the  Merger,  both before and after
    giving effect to the synergies that  management of Ameritech  estimates will
    be realized following the Merger. Assuming a 7.5% revenue growth rate and an
    exit multiple of 6.0x EBITDA,  and using discount rates ranging from 8.5% to
    11.5% and an EBITDA margin ranging from 40.0% to 44.0%, this analysis showed
    a value per share of  Ameritech  Common  Stock,  adjusted  for the  Exchange
    Ratio,  ranging from $45.78 to $66.22 per share before  giving effect to the
    synergies that management of Ameritech  estimates will be realized following
    the Merger, and a value per share ranging from $50.34 to $71.77 after giving
    effect to such  synergies.  Assuming a revenue growth rate ranging from 5.5%
    to 9.5%, an exit multiple of 6.0x EBITDA, and using a discount rate of 10.5%
    and an EBITDA margin  ranging from 40.0% to 44.0%,  this  analysis  showed a
    value per share of Ameritech  Common Stock,  adjusted for the Exchange Ratio
    ranging  from  $41.66  to  $67.08  per  share  before  giving  effect to the
    synergies that management of Ameritech  estimates will be realized following
    the Merger,  and a value per share  ranging  from $46.52 to $71.94 per share
    after giving effect to such synergies.

    The analyses  referred to above do not take into account the  acquisition of
SNET by SBC, which has not yet been consummated.

    The  preparation  of a  fairness  opinion  is a complex  process  and is not
necessarily  susceptible to partial analysis or summary  description.  Selecting
portions of the analyses or of the summary set forth above,  without considering
the  analyses  as a whole,  could  create an  incomplete  view of the  processes
underlying  Goldman Sachs' opinion.  In arriving at its fairness  determination,
Goldman  Sachs  considered  the  results  of all such  analyses.  No  company or
transaction  (other than the Merger) used in the above  analyses as a comparison
is directly comparable to Ameritech or SBC or the contemplated transaction.  The
analyses  were  prepared  solely for  purposes of Goldman  Sachs  providing  its
opinion to the Ameritech Board as to the fairness from a financial point of view
to the holders of Ameritech  Common Stock of the Exchange  Ratio pursuant to the
Merger Agreement and do not purport to be appraisals or necessarily  reflect the
prices at which  businesses or securities  actually may be sold.  Analyses based
upon forecasts of future results are not necessarily indicative of actual future
results,  which may be  significantly  more or less  favorable than suggested by
such  analyses.  Because such analyses are  inherently  subject to  uncertainty,
being based upon numerous factors or events beyond the control of the parties or
their respective  advisors,  none of Ameritech,  SBC, Goldman Sachs or any other
person assumes  responsibility  if future results are materially  different from
those forecast.

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<PAGE>
    As described above, Goldman Sachs' opinion to the Ameritech Board was one of
many  factors  taken into  consideration  by the  Ameritech  Board in making its
determination to approve the Merger  Agreement.  The foregoing  summary does not
purport to be a complete  description of the analysis performed by Goldman Sachs
and is qualified by reference to the written  opinion of Goldman Sachs set forth
in Annex C hereto.

    Goldman Sachs, as part of its investment  banking  business,  is continually
engaged in the valuation of businesses and their  securities in connection  with
mergers  and  acquisitions,  negotiated  underwritings,   competitive  biddings,
secondary  distributions of listed and unlisted  securities,  private placements
and  valuations  for estate,  corporate  and other  purposes.  Goldman  Sachs is
familiar with Ameritech,  having provided certain investment banking services to
Ameritech from time to time, including: (i) having acted as financial advisor to
Ameritech with respect to  Ameritech's  purchase of 4.5 million Class A ordinary
shares of  TeleDanmark in 1997,  (ii) having acted as managing  underwriter of a
public offering of stated rate auction preferred  securities issued by Ameritech
Denmark Capital  Funding  Corporation,  an affiliate of Ameritech,  on April 20,
1998,  (iii) having acted as managing  underwriter of a public offering of $1.75
billion of notes and  debentures  issued by Ameritech  on January 15, 1998,  and
(iv) having acted as financial  advisor to Ameritech  in  connection  with,  and
participated in certain of the  negotiations  leading to, the Merger  Agreement.
Goldman Sachs has also provided certain  investment banking services to SBC from
time to time,  including having acted as co-manager of a public offering of $200
million of notes for a subsidiary  of SBC on February 10, 1998,  and may provide
investment banking services to SBC in the future.  Goldman Sachs provides a full
range of financial  advisory and  securities  services and, in the course of its
normal trading  activities,  may from time to time effect  transactions and hold
securities,  including  derivative  securities,  of Ameritech or SBC for its own
account and for the accounts of customers.  As of May 6, 1998, Goldman Sachs had
accumulated  (i) a long  position of 287,383  shares of  Ameritech  Common Stock
against which Goldman Sachs is short 191,694  shares of Ameritech  Common Stock,
(ii) a short  position of  1,431,742  shares of SBC Common Stock  against  which
Goldman Sachs is long 446,807  shares of SBC Common  Stock,  options to purchase
40,000  shares of SBC Common  Stock,  and 10,100  convertible  bonds of SBC, and
(iii) a long position of 666,000 shares of common stock of SNET.

    Pursuant  to a letter  agreement  dated  May 7,  1998  (the  "Goldman  Sachs
Engagement  Letter"),  Ameritech  engaged  Goldman Sachs to act as its financial
advisor to assist  Ameritech in  connection  with the possible  sale of all or a
portion of  Ameritech.  Pursuant  to the terms of the Goldman  Sachs  Engagement
Letter, Ameritech has agreed to pay Goldman Sachs (i) a fee equal to $10 million
payable upon execution of the Merger Agreement,  (ii) an additional  transaction
fee  of  $15  million  payable  upon  consummation  of  the  Merger  or  another
transaction involving the sale of 50% or more of the outstanding common stock or
assets  of  Ameritech,  (iii)  an  additional  fee  of $5  million,  payable  at
Ameritech's  discretion,  based on Goldman Sachs'  availability and contribution
through the closing of any such transactions,  and (iv) an additional fee of $10
million,  payable at Ameritech's discretion,  based on Goldman Sachs' reasonable
support,  upon  request,  in the pursuit by  Ameritech of  regulatory  approvals
necessary to  consummate  any such  transactions.  Ameritech  has also agreed to
indemnify Goldman Sachs and certain related persons against various  liabilities
in  connection  with its  engagement  and to  reimburse  Goldman  Sachs  for its
out-of-pocket expenses, including reasonable attorney's fees.

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

    Certain matters discussed herein are forward-looking statements that involve
risks and  uncertainties.  Forward-looking  statements  include the  information
concerning possible or assumed future results of operations of SBC and Ameritech
and  synergistic  benefits  of the Merger  set forth  under  "--Reasons  for the
Merger; Recommendations of the Board of Directors" and "-- Opinions of Financial
Advisors."  To that  extent,  SBC and  Ameritech  claim  the  protection  of the
disclosure liability safe harbor for forward-looking statements contained in the
Private Securities Litigation Reform Act of 1995. Readers are cautioned that the
following  important factors,  in addition to those discussed  elsewhere herein,
and in the documents  incorporated by reference herein,  could affect the future
results of SBC and Ameritech and cause those results to differ  materially  from
those expressed in such forward-looking statements: future regulatory conditions
in both companies'  operating areas,  including conditions which may be attached
to regulatory  approvals  required for consummation of the Merger,  greater than
anticipated  competition  in the local service  market or other markets in which
either company operates,  integration of the businesses, rate of growth of SBC's
and Ameritech's  cellular businesses,  the timing,  extent, and profitability of
SBC's  national-local  strategy  and its entry  into the  long-distance  market,
growth in local  access  lines,  risks  inherent  in  international  operations,
including  exposure  to  fluctuations  in foreign  currency  exchange  rates and
political risk, the impact of new  technologies  and changes in general economic
and market conditions.

TERMS OF THE MERGER

    At the Effective Time, Merger Sub will be merged with and into Ameritech and
the separate corporate  existence of Merger Sub will thereupon cease.  Ameritech
will be the Surviving  Corporation,  will continue to be governed by the laws of
the State of Delaware  and will become a wholly  owned  subsidiary  of SBC.  The
Merger Agreement  provides that the Ameritech  Charter as in effect  immediately
prior to the  Effective  Time will be  amended  as  contemplated  by the  Merger
Agreement and, as so amended,  will be the certificate of  incorporation  of the
Surviving  Corporation  and that the  by-laws  of  Merger  Sub in  effect at the
Effective Time will be the by-laws of the Surviving Corporation.

    Pursuant  to the Merger  Agreement,  at the  Effective  Time,  each share of
Ameritech Common Stock issued and outstanding immediately prior to the Effective
Time (other than  Excluded  Ameritech  Common  Stock) will be  converted  into a
number of shares of SBC Common  Stock equal to the  Exchange  Ratio  (subject to
appropriate adjustment to prevent dilution), together with an appropriate number
of corresponding  SBC Rights or SBC Substitute  Rights, if any. See "- General."
The Merger Agreement  further provides that at the Effective Time, all shares of
Ameritech  Common  Stock will no longer be  outstanding,  will be  canceled  and
retired and will cease to exist, and (A) each certificate (an


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<PAGE>



"Ameritech  Certificate")  formerly  representing any shares of Ameritech Common
Stock (other than Excluded Ameritech Shares) and (B) each  uncertificated  share
of Ameritech  Common Stock (a  "Registered  Ameritech  Share")  registered  to a
holder  on the  stock  transaction  books  of  Ameritech  (other  than  Excluded
Ameritech Common Stock) will thereafter  represent only the right to receive the
Merger  Consideration  and  the  right,  if  any,  to  receive  cash  in lieu of
fractional  shares and any  distribution  or dividend on SBC Common Stock with a
record date at or after the Effective Time. In addition,  each share of Excluded
Ameritech Common Stock issued and outstanding immediately prior to the Effective
Time will be canceled and retired without payment of any consideration  therefor
and will cease to exist.

    The Merger Agreement  provides that in the event that prior to the Effective
Time  there is a change in the  number of shares of  Ameritech  Common  Stock or
shares of SBC Common Stock or securities  convertible  or  exchangeable  into or
exercisable  for shares of Ameritech  Common Stock or shares of SBC Common Stock
issued and  outstanding as a result of a distribution,  reclassification,  stock
split  (including a reverse  split),  stock dividend or  distribution,  or other
similar transaction,  the Exchange Ratio will be equitably adjusted to eliminate
the effects of such event.

    No  fractional  shares of SBC  Common  Stock  will be issued in the  Merger.
Instead,  the Merger  Agreement  provides  that each holder of Ameritech  Common
Stock who would  otherwise  have been entitled to receive a fractional  share of
SBC Common Stock in the Merger will be entitled to receive,  in lieu thereof, an
amount in cash  (without  interest)  determined  by  multiplying  such  fraction
(rounded to the nearest  one-hundredth  of a share) by the average closing price
of a share of SBC Common Stock, as reported in The Wall Street Journal, New York
City edition, on the trading day immediately prior to the Effective Time.

CLOSING; EFFECTIVE TIME

    The Merger Agreement provides that the Closing will take place on the second
business  day after the date on which the last to be  fulfilled or waived of the
conditions  set  forth in the  Merger  Agreement  are  satisfied  or  waived  in
accordance with the Merger Agreement, or on such other date as SBC and Ameritech
may agree in writing.  Immediately following the Closing, Ameritech and SBC will
cause the Certificate of Merger to be executed,  acknowledged and filed with the
Secretary  of State of the State of  Delaware  as provided in Section 251 of the
DGCL.  The Merger  will become  effective  at the time when the  Certificate  of
Merger has been duly filed with the  Secretary of State of the State of Delaware
or such  other  time  as  agreed  upon  by the  parties  and  set  forth  in the
Certificate of Merger in accordance with the DGCL.

EXCHANGE OF AMERITECH COMMON STOCK FOR SHARES OF SBC COMMON STOCK

    Procedures.  The Merger Agreement provides that promptly after the Effective
Time,  the Surviving  Corporation  will cause an exchange  agent (the  "Exchange
Agent")  to  mail  to each  holder  of  record  as of the  Effective  Time of an
Ameritech Certificate or a Registered Ameritech Share, as the case may be (other
than holders of Ameritech Certificates or Registered Ameritech Shares in respect
of Excluded Ameritech Common Stock), (i) (x) in the case of holders of Ameritech
Certificates, a letter of transmittal specifying that delivery will be effected,
and that risk of loss and title to the Ameritech  Certificates  will pass,  only
upon delivery of Ameritech  Certificates (or affidavits of loss in lieu thereof)
to the Exchange Agent (the  "Certificate  Letter of  Transmittal") or (y) in the
case of  holders  of  Registered  Ameritech  Shares,  a  letter  of  transmittal
specifying  that the exchange for SBC Common Stock will occur only upon delivery
of a letter of  transmittal  to the Exchange  Agent (the  "Registered  Letter of
Transmittal"),  each such letter of transmittal to be in such form and have such
other   provisions  as  SBC  and  Ameritech  may  reasonably   agree,  and  (ii)
instructions  for  exchanging  Ameritech  Certificates  or Registered  Ameritech
Shares for (A) uncertificated shares of SBC Common Stock registered on the stock
transfer books of SBC in the name of such holder  ("Registered  SBC Shares") or,
at the election of such holder,  certificates  representing shares of SBC Common
Stock and (B) any unpaid dividends and other  distributions  and cash in lieu of
fractional shares.  Except as otherwise  provided in the Merger Agreement,  upon
(I) surrender of an Ameritech Certificate for cancellation to the Exchange Agent
together with a Certificate Letter of Transmittal,  duly executed, the holder of
such  Ameritech   Certificate  or  (II)  delivery  of  a  Registered  Letter  of
Transmittal,  duly executed,  the holder of such Registered Ameritech Shares, as
the case may be, will be entitled to receive in exchange therefor (x) Registered
SBC Shares or, at the election of such holder, a certificate  representing  that
number of whole  shares of SBC Common  Stock  that such  holder is  entitled  to
receive  pursuant  to the Merger  Agreement,  (y) a check in the  amount  (after
giving  effect  to any  required  tax  withholdings)  of (A) any cash in lieu of
fractional  shares  determined  in  accordance  with  the  terms  of the  Merger
Agreement  plus  (B)  any  cash  dividends  and any  other  dividends  or  other
distributions  that such holder has the right to receive  pursuant to the Merger
Agreement,  and any Ameritech  Certificate  so  surrendered  and any  Registered
Ameritech  Share in respect of which a Registered  Letter of  Transmittal  is so
delivered  will be canceled.  No interest  will be paid or accrued on any amount
payable upon



                                       37

<PAGE>



due  surrender  of any  Ameritech  Certificate  or delivery  of a duly  executed
Registered Letter of Transmittal, as the case may be.

    The  Merger  Agreement  also  provides  that in the event of a  transfer  of
ownership  of  Ameritech  Common  Stock that is not  registered  in the transfer
records of Ameritech,  Registered SBC Shares or a certificate  representing  the
proper number of shares of SBC Common Stock, as the case may be, together with a
check for any cash to be paid upon due surrender of the Ameritech Certificate or
upon the delivery to the Exchange Agent of the duly executed  Registered  Letter
of Transmittal and any other dividends or distributions in respect thereof,  may
be  issued  and/or  paid to such a  transferee  if,  in the case of  holders  of
Ameritech  Certificates,  the Ameritech  Certificate formerly  representing such
Ameritech  Common Stock is presented to the Exchange Agent,  and, in the case of
holders of Registered  Ameritech Shares, if the Registered Letter of Transmittal
is delivered to the Exchange Agent, in either case  accompanied by all documents
required  to  evidence  and  effect  such  transfer  and to  evidence  that  any
applicable  stock transfer taxes have been paid. If any Registered SBC Shares or
any  certificate  for shares of SBC Common Stock is to be issued in a name other
than that in which the Ameritech Certificate surrendered in exchange therefor or
the  Registered  Ameritech  Shares  exchanged  therefor,  as the case may be, is
registered,  it will be a condition of such exchange that the Person (as defined
in the Merger Agreement) requesting such exchange will pay any transfer or other
taxes  required  by  reason  of the  issuance  of  Registered  SBC  Shares  or a
certificate  for  shares of SBC  Common  Stock in a name  other than that of the
registered  holder of the Ameritech  Certificate  surrendered  or the Registered
Ameritech  Shares  exchanged,  as the  case  may be,  or will  establish  to the
satisfaction  of SBC or the Exchange Agent that such tax has been paid or is not
applicable.

    Lost, Stolen or Destroyed Certificates

    In the event any Ameritech  Certificate is lost,  stolen or destroyed,  upon
the making of an affidavit of that fact by the Person  claiming  such  Ameritech
Certificate to be lost,  stolen or destroyed and the posting by such Person of a
bond in the form customarily required by SBC as indemnity against any claim that
may be made  against it with  respect to such  Ameritech  Certificate,  SBC will
issue the  shares of SBC  Common  Stock and the  Exchange  Agent  will issue the
shares of SBC Common Stock and the Exchange Agent will issue any cash, dividends
and other  distributions  in respect thereof issuable and/or payable in exchange
for such lost,  stolen or  destroyed  Certificate  pursuant  to the terms of the
Merger  Agreement upon due surrender of and delivery in respect of the Ameritech
Common Stock  represented by such Ameritech  Certificate  pursuant to the Merger
Agreement, in each case, without interest.

    Distributions with Respect to Unexchanged Shares; Voting

    The Merger Agreement provides that whenever a dividend or other distribution
is declared by SBC in respect of SBC Common Stock,  the record date for which is
at or after the Effective Time, that declaration will include dividends or other
distributions in respect of all shares of SBC Common Stock issuable  pursuant to
the Merger  Agreement.  The Merger  Agreement also provides that no dividends or
other  distributions  in respect  of such SBC  Common  Stock will be paid to any
holder of any unsurrendered Ameritech Certificate or Registered Ameritech Shares
for which a Registered Letter of Transmittal has not been delivered,  until such
Ameritech  Certificate is surrendered for exchange or such Registered  Letter of
Transmittal is delivered,  as the case may be, in accordance with the provisions
of the Merger  Agreement.  Subject to the effect of applicable  laws,  following
surrender of any such Ameritech  Certificate or delivery of any such  Registered
Letter of  Transmittal,  as the case may be, there will be issued and/or paid to
the holder of the Registered SBC Shares or the certificates  representing  whole
shares of SBC Common  Stock,  as the case may be,  issued in exchange  therefor,
without interest, (A) at the time of such surrender or delivery, as the case may
be, the dividends or other  distributions with a record date after the Effective
Time and a payment date on or prior to the date of issuance of such whole shares
of SBC Common Stock and not previously paid and (B) at the  appropriate  payment
date,  the dividends or other  distributions  payable with respect to such whole
shares of SBC Common Stock with a record date after the Effective  Time but with
a payment date  subsequent  to  surrender  or delivery,  as the case may be. For
purposes of dividends or other  distributions in respect of shares of SBC Common
Stock,  all shares of SBC Common Stock to be issued  pursuant to the Merger will
be deemed issued and outstanding as of the Effective Time.

    The  Merger   Agreement   further   provides  that  registered   holders  of
unsurrendered  Ameritech Certificates or Registered Ameritech Shares for which a
duly executed  Registered  Letter of Transmittal  has not been delivered will be
entitled to vote after the Effective Time at any meeting of SBC shareowners with
a record date at or after the  Effective  Time the number of whole shares of SBC
Common Stock represented by such Ameritech  Certificates or Registered Ameritech
Shares,  as the case may be, regardless of whether such holders have surrendered
their Ameritech  Certificates or delivered duly executed  Registered  Letters of
Transmittal, as the case may be.



                                       38

<PAGE>

REPRESENTATIONS AND WARRANTIES

    The Merger  Agreement  contains  various  representations  and warranties of
Ameritech, SBC and Merger Sub, certain of which are qualified as to materiality.
Ameritech  represents  and warrants to SBC and Merger Sub, and SBC (on behalf of
itself and Merger Sub)  represents  and  warrants  to  Ameritech  regarding  the
following matters,  among others: (i) corporate  existence and capitalization of
it and its respective  Significant  Subsidiaries  (as defined in Rule 1.02(w) of
Regulation S-X  promulgated  pursuant to the Exchange Act); (ii) corporate power
and authority to execute,  deliver and perform its obligations  under the Merger
Agreement and to consummate the Merger;  (iii) that the Merger Agreement and the
consummation  of the Merger  will not result in a violation  of any  Contract to
which it is a party, or violate any law, rule,  regulation,  any governmental or
non-governmental permit or license or the organizational  documents of it or its
Significant Subsidiaries;  (iv) consents,  registrations,  approvals, permits or
authorizations  required by any  governmental  or regulatory  authority,  court,
agency,  commission,  body or other governmental entity ("Governmental  Entity")
required in connection  with the execution and delivery of the Merger  Agreement
and the  consummation of the Merger and the other  transactions  contemplated by
the Merger  Agreement,  including  filings with applicable PUCs and the FCC; (v)
its  financial  statements;  (vi)  the  conduct  of its  and  its  Subsidiaries'
businesses since December 31, 1997; (vii) pending or threatened civil,  criminal
or  administrative  suits,  actions or proceedings and undisclosed  liabilities;
(viii)  employee  benefits;  (ix)  compliance  with  laws;  (x) in the  case  of
Ameritech,  inapplicability  of  state  takeover  statutes;  (xi)  environmental
matters;  (xii) accounting and tax matters,  including the absence of any action
that  would  prevent  SBC  from  accounting  for the  Merger  as a  "pooling  of
interests" or prevent the Merger from  qualifying as a  "reorganization"  within
the meaning of Section 368(a) of the Code;  (xiii) labor  matters;  (xiv) in the
case of Ameritech, Ameritech having adopted an amendment to the Rights Agreement
between  Ameritech  and  American  Transtech  Inc.,  as Rights Agent dated as of
December 21, 1988 (the  "Ameritech  Rights  Agreement") to provide,  among other
things, that neither SBC nor Ameritech will have any obligations relating to the
Rights  Agreement  as a  result  of the  Merger;  and (xv)  the  absence  of any
liability to any  undisclosed  person for any  brokerage  fees,  commissions  or
finders' fees.

    As used in the Merger Agreement,  the term "Subsidiary"  means, with respect
to  Ameritech,  SBC or  Merger  Sub,  as the case may be,  any  entity,  whether
incorporated  or  unincorporated,  of  which  at  least  fifty  percent  of  the
securities or ownership interests having by their terms ordinary voting power to
elect  at  least  fifty  percent  of the  board of  directors  or other  persons
performing similar functions is directly or indirectly owned by such party or by
one or more of its respective  Subsidiaries or by such party and any one or more
of its respective Subsidiaries.

CERTAIN COVENANTS

    Interim Operations

    Pursuant to the Merger Agreement,  Ameritech has covenanted and agreed as to
itself and its  Subsidiaries  that,  after the date of the Merger  Agreement and
prior to the  Effective  Time  (unless SBC  otherwise  approves in writing,  and
except as otherwise expressly contemplated by the Merger Agreement, disclosed to
SBC or required by applicable  Law): (i) the business of it and its Subsidiaries
will be conducted in the ordinary and usual course and, to the extent consistent
therewith,  it and its  Subsidiaries  will use all  reasonable  best  efforts to
preserve its business  organization  intact and maintain its existing  relations
and goodwill with customers,  suppliers,  regulators,  distributors,  creditors,
lessors,  employees  and  business  associates;  (ii) it will not (A)  amend the
Ameritech  Charter or the  Ameritech  Bylaws or amend,  modify or terminate  the
Ameritech  Rights  Agreement;  provided,  however,  that  nothing  in the Merger
Agreement  will  prevent  Ameritech  from  reducing  below  20%  the  beneficial
ownership  threshold in the definition of an Acquiring Person (as defined in the
Ameritech  Rights  Agreement) or extending the Final Expiration Date (as defined
in the Ameritech  Rights  Agreement) or adopting a new rights  agreement  having
substantially  similar terms as the Rights Agreement and not  inconsistent  with
the terms of the Merger Agreement  relating to the Ameritech Rights Agreement or
the  transactions  contemplated  by the Merger  Agreement;  (B) split,  combine,
subdivide or reclassify its  outstanding  shares of capital stock;  (C) declare,
set aside or pay any dividend or distribution payable in cash, stock or property
in respect of any capital stock,  other than regular quarterly cash dividends in
amounts consistent with its past practice or rights to purchase Ameritech Common
Stock or Ameritech  Preference Stock pursuant to any successor  agreement to the
Ameritech Rights  Agreement,  adopted in accordance with the terms of the Merger
Agreement;  or (D) repurchase,  redeem or otherwise acquire or permit any of its
Subsidiaries   to  purchase  or  otherwise   acquire,   except  in  open  market
transactions  in connection  with the Ameritech  Stock Plans,  any shares of its
capital stock or any securities  convertible into or exchangeable or exercisable
for any shares of its  capital  stock,  but subject to  Ameritech's  obligations
under the following  item (iii);  (iii)  neither it nor any of its  Subsidiaries
will knowingly take any action that would prevent the Merger from qualifying for
"pooling of interests" accounting treatment or as a "reorganization"  within the
meaning of


                                       39
<PAGE>

Section  368(a) of the Code or that would cause any of its  representations  and
warranties  contained in the Merger  Agreement to become  untrue in any material
respect; (iv) neither it nor any of its Subsidiaries will terminate,  establish,
adopt, enter into, make any new grants or awards of stock-based  compensation or
other benefits under, amend or otherwise modify, any Ameritech  Compensation and
Benefit Plans or increase the salary,  wage, bonus or other  compensation of any
directors,  officers  or key  employees  except  (A) for  grants  or  awards  to
directors,  officers and  employees  of it or its  Subsidiaries  under  existing
Ameritech  Compensation  and Benefit  Plans in such amounts and on such terms as
are  consistent  with past  practice,  (B) in the  normal  and  usual  course of
business  (which will include normal  periodic  performance  reviews and related
Ameritech   Compensation  and  Benefit  Plan  increases  and  the  provision  of
individual  Ameritech  Compensation  and  Benefit  Plans  consistent  with  past
practice for promoted or newly hired  officers and employees and the adoption of
Ameritech  Compensation  and Benefit Plans for employees of new  Subsidiaries in
amounts and on terms consistent with past practice);  provided, that in no event
will it institute a broad based change in  compensation,  unless it has used its
reasonable  best efforts to provide SBC with prior notice of any such change or,
if Ameritech was unable to provide such prior notice, Ameritech will provide SBC
with notice as soon as practicable following any such change, or (C) for actions
necessary  to  satisfy   existing   contractual   obligations   under  Ameritech
Compensation and Benefit Plans existing as of the date of the Merger  Agreement;
(v) neither it nor any of its  Subsidiaries  will issue any Ameritech  Preferred
Stock or Ameritech Preference Stock or incur any indebtedness for borrowed money
or guarantee any such indebtedness if it reasonably  anticipates that after such
incurrence  any  of  its  or  any  of  its  Subsidiaries'   outstanding   senior
indebtedness would be rated A or lower by Standard & Poor's; (vi) neither it nor
any of its  Subsidiaries  will make any  capital  expenditures  in any period of
twelve  consecutive  months  following  the date of the Merger  Agreement  in an
aggregate  amount  in  excess  of  150% of the  aggregate  amount  reflected  in
Ameritech's  capital  expenditure budget for such year; (vii) neither it nor any
of its Subsidiaries  will transfer,  lease,  license,  sell,  mortgage,  pledge,
encumber  or  otherwise  dispose of any of its or its  Subsidiaries  property or
assets (including  capital stock of any of its Subsidiaries)  with a fair market
value  in  excess  of $1  billion  in the  aggregate  in any  period  of  twelve
consecutive  months  following  the  date of the  Merger  Agreement  except  for
transfers, leases, licenses, sales, mortgages,  pledges,  encumbrances, or other
dispositions in the ordinary  course of business  consistent with past practice;
(viii)  neither it nor any of its  Subsidiaries  will issue,  deliver,  sell, or
encumber  shares of any class of its common stock or any securities  convertible
into, or any rights,  warrants or options to acquire, any such shares except (A)
any such shares issued  pursuant to options and other awards  outstanding on the
date of the Merger Agreement under the Ameritech Stock Plans,  awards of options
and other  awards  granted  after the  execution of the Merger  Agreement  under
Ameritech  Stock  Plans in  accordance  with the  Merger  Agreement  and  shares
issuable  pursuant  to such  awards  and (B) up to an  aggregate  amount of $3.6
billion of such shares, securities, rights, warrants or options (valued at their
fair market value as of the date of the agreement to make such  acquisition)  in
any  period  of  twelve  consecutive  months  following  the date of the  Merger
Agreement  to  fund,  in  whole  or in  part,  the  cost of any  acquisition  or
acquisitions permitted under the following item (ix) following reasonable notice
to SBC of its  intention  to take such  action;  (ix)  neither it nor any of its
Subsidiaries will spend in excess of $3.6 billion in the aggregate in any period
of twelve  consecutive  months  following  the date of the Merger  Agreement  to
acquire any business, whether by merger, consolidation,  purchase of property or
assets or otherwise, provided, that no such acquisition will prevent, materially
delay  or  materially   impair  its  ability  to  consummate  the   transactions
contemplated by the Merger Agreement,  and provided further, that neither it nor
any of its Subsidiaries will acquire any business the acquisition of which would
subject SBC and its Subsidiaries following the consummation of the Merger to any
Commercial Mobile Radio Service spectrum  aggregation limit restriction pursuant
to the  provisions of 47 C.F.R.  Section 20.6 or place SBC and its  Subsidiaries
following  the  consummation  of the Merger in violation  of the Cellular  Cross
Ownership limits contained in 47 C.F.R.  Section 22.942;  (x) neither it nor its
Subsidiaries  will enter  into any  business  other than the  telecommunications
business   and   those    businesses    traditionally    associated   with   the
telecommunications  business;  and (xi)  neither it nor any of its  Subsidiaries
will authorize or enter into any agreement to do any of the foregoing.

    Pursuant to the Merger Agreement, SBC has covenanted and agreed as to itself
and its  Subsidiaries  that after the date of the Merger  Agreement and prior to
the  Effective  Time  (unless  Ameritech  otherwise  approves in writing,  which
approval will not be unreasonably  withheld or delayed,  and except as otherwise
expressly  contemplated  by the Merger  Agreement,  disclosed  to  Ameritech  or
required by applicable Law): (i) the business of it and its Subsidiaries will be
conducted  in the  ordinary  and usual  course  and,  to the  extent  consistent
therewith,  it and its  Subsidiaries  will use all  reasonable  best  efforts to
preserve its business  organization  intact and maintain its existing  relations
and goodwill with customers,  suppliers,  regulators,  distributors,  creditors,
lessors,  employees and business associates;  (ii) it will not (A) amend the SBC
Charter or SBC Bylaws in any manner  that would  prohibit  or hinder,  impede or
delay in any material respect the Merger or the consummation of the transactions
contemplated  thereby,  provided,  that  any  amendment  to the SBC  Charter  to
increase the  authorized  number of shares of any class or series of the capital
stock of SBC will in no way be restricted  by the  foregoing;  (B) declare,  set
aside or pay any  dividend  or other  distribution  payable in cash or  property
(other  than SBC Common  Stock or rights to  purchase  SBC  Common  Stock or SBC
Preferred

                                       40
<PAGE>

Stock  pursuant  to any  successor  agreement  to the SBC Rights  Agreement)  in
respect of any  capital  stock,  other  than per share  regular  quarterly  cash
dividends  in amounts  consistent  with its past  practice;  or (C)  repurchase,
redeem or otherwise  acquire,  or permit any of its  Subsidiaries to purchase or
otherwise acquire, except in open market transactions in connection with the SBC
Stock Plans, any shares of its capital stock or any securities  convertible into
or  exchangeable  for any  shares of its  capital  stock,  but  subject to SBC's
obligations  under the  following  item (iii);  (iii)  neither it nor any of its
Subsidiaries  will  knowingly take any action that would prevent the Merger from
qualifying  for  "pooling-of-interests"  accounting  treatment  or as a tax-free
"reorganization"  within the meaning of Section  368(a) of the Code or that will
cause any of its  representations and warranties therein to become untrue in any
material respect; (iv) neither it nor any of its Subsidiaries will issue any SBC
Preferred  Stock or incur any  indebtedness  for borrowed money or guarantee any
such indebtedness if it reasonably anticipates that after such incurrence any of
its or any of its Subsidiaries' outstanding senior indebtedness would be rated A
or lower by Standard & Poor's;  (v) neither it nor any of its Subsidiaries  will
make any  capital  expenditures  in any  period  of  twelve  consecutive  months
following the date of the Merger  Agreement in an aggregate  amount in excess of
150% of the aggregate  amount of capital  expenditures  reflected in its capital
expenditure  budget for such year;  (vi) neither it nor any of its  Subsidiaries
will transfer,  lease, license,  sell, mortgage,  pledge,  encumber or otherwise
dispose of any of its or its Subsidiaries  property or assets (including capital
stock of any of its  Subsidiaries)  with a fair  market  value in excess of $1.5
billion in the aggregate in any period of twelve  consecutive  months  following
the date of the Merger Agreement except for transfers,  leases, licenses, sales,
mortgages,  pledges,  encumbrances, or other dispositions in the ordinary course
of  business  consistent  with past  practice;  (vii)  neither it nor any of its
Subsidiaries  will issue,  deliver,  sell or encumber shares of any class of its
common stock or any  securities  convertible  into,  or any rights,  warrants or
options to acquire, any such shares,  except (A) any such shares issued pursuant
to options  and other  awards  outstanding  on the date of the Merger  Agreement
under the SBC Stock Plans,  awards of options and other awards granted hereafter
under the SBC Stock Plans and shares issuable pursuant to such awards, (B) up to
an aggregate amount of $4.8 billion of such shares, securities, rights, warrants
or options in any period of twelve  consecutive months following the date of the
Merger  Agreement to fund, in whole or in part,  the cost of any  acquisition or
acquisitions  permitted  under the following item (viii),  following  reasonable
notice to  Ameritech of its  intention to take such action,  and (C) pursuant to
the terms of the  Agreement  and Plan of Merger dated as of January 4, 1998,  by
and  among  SNET  and  SBC(CT)  Sub,  Inc.  a  Connecticut   corporation  and  a
wholly-owned  subsidiary of SBC (the "SNET  Agreement"),  which issuances of SBC
capital  stock  will  not  be  included  in  calculating  the  $4.8  billion  of
permissible issuances,  deliveries, sales or encumbrances,  or require notice to
Ameritech,  pursuant  to clause  (B)  above;  (viii)  neither  it nor any of its
Subsidiaries will spend in excess of $4.8 billion in the aggregate in any period
of twelve  consecutive  months  following  the date of the Merger  Agreement  to
acquire any business, whether by merger, consolidation,  purchase of property or
assets or otherwise (valuing any non-cash consideration at its fair market value
as of the date of the agreement for such acquisition),  provided,  however, that
no such acquisition  would prevent,  materially  delay or materially  impair its
ability to consummate the transactions contemplated by the Merger Agreement; and
provided,  further,  that the SNET Agreement and the  transactions  contemplated
thereby  will not be  subject  to the terms of the  foregoing  restriction  and,
provided,  further, that neither it nor any of its Subsidiaries will acquire any
business  the  acquisition  of  which  would  subject  SBC and its  Subsidiaries
following the consummation of the Merger to any Commercial  Mobile Radio Service
spectrum  aggregation limit restriction  pursuant to the provisions of 47 C.F.R.
Section 20.6 or place SBC and its Subsidiaries following the consummation of the
Merger in violation  of the  Cellular  Cross  Ownership  limits  contained in 47
C.F.R.  Section  22.942,  except that the SNET  Agreement  and the  transactions
contemplated  thereby  will  not be  subject  to  the  terms  of  the  foregoing
restriction; (ix) neither it nor any of its Subsidiaries will enter any business
other than the  telecommunications  business and those businesses  traditionally
associated with the  telecommunications  business; and (x) neither it nor any of
its  Subsidiaries  will  authorize  or enter into an  agreement to do any of the
foregoing.

    Acquisition Proposals

    In accordance with the terms of the Merger  Agreement,  Ameritech has agreed
that neither it nor any of its  Subsidiaries  will,  and that it will direct and
use its best efforts to cause its and its  Subsidiaries'  employees,  agents and
representatives   (including  any  investment  banker,  attorney  or  accountant
retained by it or any of its  Subsidiaries)  (Ameritech,  its  Subsidiaries  and
their  officers,  directors,  employees,  agents and  representatives  being the
"Ameritech Representatives") not to, directly or indirectly,  initiate, solicit,
encourage or otherwise  facilitate  any inquiries or the making of any Ameritech
Acquisition  Proposal.  Ameritech has further  agreed that neither it nor any of
its Subsidiaries will, and that it will direct and use its best efforts to cause
Ameritech  Representatives  not to, directly or indirectly,  have any discussion
with or provide any  confidential  information or data to any Person relating to
an Ameritech  Acquisition  Proposal or engage in any negotiations  concerning an
Ameritech Acquisition Proposal, or otherwise facilitate any effort or attempt to
make or implement an Ameritech  Acquisition  Proposal;  provided,  however, that
nothing  contained  in the Merger  Agreement  will prevent  either  Ameritech or
Ameritech Representatives from (A) complying with Rule 14e-2

                                       41
<PAGE>

promulgated  under the  Exchange  Act with  regard to an  Ameritech  Acquisition
Proposal;  (B) engaging in any discussions or negotiations with or providing any
information  to, any Person in  response  to an  unsolicited  bona fide  written
Ameritech  Acquisition  Proposal by any such Person; or (C) recommending such an
unsolicited bona fide written Ameritech  Acquisition Proposal to the shareowners
of Ameritech if, and only to the extent that, in such case referred to in clause
(B) or (C), (i) the Ameritech Board concludes in good faith (after  consultation
with  its  financial  advisor)  that  such  Ameritech  Acquisition  Proposal  is
reasonably capable of being completed, taking into account all legal, financial,
regulatory and other aspects of the proposal and the Person making the proposal,
and would, if consummated,  result in a Superior  Ameritech  Proposal,  (ii) the
Ameritech Board determines in good faith after  consultation  with outside legal
counsel that such action is necessary for the Ameritech Board to comply with its
fiduciary duty under applicable law and (iii) prior to providing any information
or data to any Person in connection  with an Ameritech  Acquisition  Proposal by
any such Person, the Ameritech Board receives from such Person a confidentiality
agreement in customary form, provided, that such confidentiality  agreement will
not contain terms that prevent  Ameritech from  complying  with its  obligations
under the foregoing provisions of the Merger Agreement.

    In accordance  with the terms of the Merger  Agreement,  SBC has agreed that
neither it nor any of its Subsidiaries will, and that it will direct and use its
best  efforts  to  cause  its  and  its  Subsidiaries'  employees,   agents  and
representatives   (including  any  investment  banker,  attorney  or  accountant
retained by it or any of its  Subsidiaries)  (SBC,  its  Subsidiaries  and their
officers,  directors,  employees,  agents  and  representatives  being  the "SBC
Representatives") not to, directly or indirectly,  initiate,  solicit, encourage
or  otherwise  facilitate  any  inquiries  or the making of any SBC  Acquisition
Proposal. SBC has further agreed that neither it nor any of its Subsidiaries nor
any of the officers and directors of it or its  Subsidiaries  will,  and that it
will direct and use its best  efforts to cause the SBC  Representatives  not to,
directly or  indirectly,  have any discussion  with or provide any  confidential
information  or data to any Person  relating  to a SBC  Acquisition  Proposal or
engage in any negotiations  concerning a SBC Acquisition  Proposal, or otherwise
facilitate  any  effort  or  attempt  to make  or  implement  a SBC  Acquisition
Proposal; provided, however, that nothing contained in the Merger Agreement will
prevent either SBC or the SBC Representatives from (A) complying with Rule 14e-2
promulgated  under the Exchange Act with regard to a SBC  Acquisition  Proposal;
(B)  engaging  in  any  discussions  or  negotiations   with  or  providing  any
information  to, any Person in response to an unsolicited  bona fide written SBC
Acquisition Proposal by any such Person; or (C) recommending such an unsolicited
bona fide written SBC Acquisition Proposal to the shareowners of SBC if and only
to the extent that, in such cases  referred to in clause (B) or (C), (i) the SBC
Board concludes in good faith (after  consultation  with its financial  advisor)
that such SBC  Acquisition  Proposal is reasonably  capable of being  completed,
taking into account all legal,  financial,  regulatory  and other aspects of the
proposal and the Person making the proposal,  and would, if consummated,  result
in a Superior SBC  Proposal,  (ii) the SBC Board  determines in good faith after
consultation  with outside  legal  counsel that such action is necessary for the
Board of Directors to comply with its fiduciary  duty under  applicable  law and
(iii) prior to providing  any  information  or data to any Person in  connection
with a SBC Acquisition  Proposal by any such Person,  the SBC Board will receive
from such Person a confidentiality  agreement in customary form, provided, that,
such  confidentiality  agreement  will not contain  terms that  prevent SBC from
complying  with its  obligations  under the  foregoing  provisions of the Merger
Agreement.

    Ameritech  and SBC have each  agreed in the  Merger  Agreement  to cease and
cause to be terminated any existing activities, discussions or negotiations with
any parties  conducted  theretofore  with respect to any  Ameritech  Acquisition
Proposal or SBC Acquisition  Proposal,  as the case may be. The Merger Agreement
further requires  Ameritech and SBC to notify the other  immediately if any such
inquiries,  proposals  or  offers  are  received  by,  any such  information  is
requested  from,  or any such  discussions  or  negotiations  are  sought  to be
initiated  or  continued  with,  any  of  its  representatives   indicating,  in
connection  with  such  notice,  the  name of such  Person  and  the  terms  and
conditions of any proposals or offers, and thereafter to inform the other of any
material  modification  of the  terms  of any  such  proposal  or  offer  or the
withdrawal thereof.  The Merger Agreement requires Ameritech and SBC to promptly
request each Person that has theretofore executed a confidentiality agreement in
connection with its consideration of any Ameritech  Acquisition  Proposal or any
SBC  Acquisition  Proposal,  as the  case may be,  to  return  all  confidential
information  heretofore furnished to such Person by or on behalf of it or any of
its Subsidiaries.

    The Special Meetings

    Ameritech has agreed in the Merger Agreement to take all action necessary to
convene the  Ameritech  Special  Meeting as promptly  as  practicable  after the
Registration Statement is declared effective.  Similarly,  SBC has agreed in the
Merger Agreement to take all action necessary to convene the SBC Special Meeting
as  promptly  as  practicable  after  the  Registration  Statement  is  declared
effective.

                                       42
<PAGE>



    Subject to their respective  fiduciary  obligations under applicable law and
the terms of the Merger Agreement,  Ameritech has agreed in the Merger Agreement
that the Ameritech  Board will recommend that the shareowners of Ameritech adopt
the Merger Agreement and thereby approve the transactions  contemplated  thereby
and to take all lawful  action to solicit such  adoption,  and SBC has agreed in
the Merger  Agreement that the SBC Board will recommend that the  shareowners of
SBC approve the  issuance of shares of SBC Common  Stock  pursuant to the Merger
Agreement and will take all lawful action to solicit such approval.

    Pooling of Interests

    Pursuant to the Merger Agreement,  Ameritech and SBC have each agreed to use
all  respective  reasonable  best  efforts to cause the  Merger to  qualify  for
"pooling of interests" accounting treatment. See "Accounting Treatment."

CERTAIN REGULATORY FILINGS AND APPROVALS

    Pursuant to the Merger  Agreement,  each of Ameritech  and SBC has agreed to
cooperate  with the other and use (and cause their  respective  Subsidiaries  to
use) all their  respective  reasonable best efforts to take or cause to be taken
all  actions,  and do or cause  to be done  all  things,  necessary,  proper  or
advisable  on its  part  under  the  Merger  Agreement  and  applicable  laws to
consummate and make effective the Merger and the other transactions contemplated
by the Merger Agreement as soon as practicable after the execution of the Merger
Agreement,  including  preparing and filing as promptly as practicable after the
date  of  the  Merger  Agreement  all  documentation  to  effect  all  necessary
applications,  notices, petitions,  filings and other documents and to obtain as
promptly as  practicable  all consents,  registrations,  approvals,  permits and
authorizations  required  to  be  obtained  from  any  third  party  and/or  any
Governmental  Entity in connection with the execution and delivery of the Merger
Agreement  and  the  consummation  of the  Merger  and  the  other  transactions
contemplated  thereby;  provided,  however,  that nothing in the foregoing  will
require,  or be  construed  to require,  SBC or Ameritech to agree to, or comply
with,  any  conditions  to the  granting  of  any  such  consent,  registration,
approval,  permit or authorization by any Governmental Entity if compliance with
such conditions, individually or in the aggregate, would be reasonably likely to
have a Material Adverse Effect on the Surviving Corporation or SBC following the
Effective Time (it being  understood for purposes of the Merger  Agreement that,
for this  purpose  only,  materiality  shall be  determined  by reference to the
trading market equity value of SBC prior to the  consummation  of the Merger and
after taking into  account (i) any adverse  effects  reasonably  likely to arise
from any restrictions on the ability of the Surviving  Corporation or SBC or any
of  their  respective  Subsidiaries  to  conduct  its  operations  as  currently
conducted or as proposed as of the date of the Merger  Agreement to be conducted
resulting  from  complying  with the conditions to or from the grant of any such
consent,  registration,  approval,  permit or  authorization,  (ii) any benefits
reasonably  likely to be realized  by SBC on a  consolidated  basis  (other than
those  operational  benefits  reasonably likely to be realized directly from the
consummation  of the Merger)  resulting from complying with the conditions to or
from  the  grant  of  any  such  consent,  registration,   approval,  permit  or
authorization, and (iii) any proceeds resulting from any divestiture required by
a  Governmental  Entity  as a  condition  to  its  granting  any  such  consent,
registration, approval, permit or authorization) (a "Regulatory Material Adverse
Effect").  The Merger Agreement  further provides that any divestiture by either
SBC or Ameritech or any of their respective  Subsidiaries reasonably required to
cause the Surviving  Corporation to be in compliance with the commercial  mobile
radio service spectrum  aggregation  limits  established by the FCC in 47 C.F.R.
Section  20.6 and the cellular  cross  ownership  limits  contained in 47 C.F.R.
Section  22.942  will be deemed  not to have any  adverse  effect on either  the
Surviving Corporation or SBC following the Effective Time.

    There  can be no  assurance  that  the  approvals  described  below  will be
obtained or, if obtained,  will not include  conditions that could result in the
abandonment of the Merger by SBC and Ameritech.

    As used in the Merger  Agreement,  "Material  Adverse  Effect"  means,  with
respect  to either  SBC or  Ameritech,  as the case may be, a  material  adverse
effect  determined by reference to its trading  market equity value prior to the
consummation  of the Merger,  other than effects or changes  resulting  from the
execution of the Merger Agreement or the announcement  thereof or changes in (I)
the telecommunications  industry generally,  (II) the national economy generally
or (A) with  respect  to SBC only,  the  economy of Texas,  Oklahoma,  Missouri,
Kansas, Arkansas, Nevada and California, taken together, generally or of France,
Mexico  and/or the  Republic of South  Africa or (B) with  respect to  Ameritech
only, the economies of Illinois,  Indiana,  Michigan, Ohio and Wisconsin,  taken
together,  generally,  or of  Belgium,  Denmark  and/or  Hungary  or  (III)  the
securities markets generally.


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<PAGE>


    HSR

    Under  the  HSR  Act  and  the   rules   promulgated   thereunder,   certain
transactions,  including  the  Merger,  may not be  consummated  unless  certain
waiting period  requirements  have been  satisfied.  SBC and Ameritech will each
file a Notification  and Report Form pursuant to the HSR Act with the Department
of Justice and the FTC. The HSR Act waiting period will expire thirty days after
the filing of the  Notification  and Report Forms,  unless the waiting period is
extended by action of the Department of Justice or the FTC requesting additional
information.  At any time  before  or after the  Effective  Time,  the FTC,  the
Department of Justice or others could take action under the antitrust  laws with
respect to the  Merger,  including  seeking to enjoin  the  consummation  of the
Merger, to rescind the Merger or to require divestiture of substantial assets of
SBC or  Ameritech.  One or more state  attorneys  general may seek to review the
Merger  under  various  antitrust  or  anticompetitive  laws.  There  can  be no
assurance that a challenge to the Merger on antitrust or anticompetitive grounds
will  not be made  or,  if such a  challenge  is  made,  that  it  would  not be
successful.

    FCC

    Before the Merger can be  consummated,  SBC and  Ameritech  must  obtain the
approval of the FCC pursuant to the  Communications  Act for the deemed transfer
of control from Ameritech to SBC of certain FCC licenses and authorizations held
by  certain of  Ameritech's  subsidiaries.  These  licenses  and  authorizations
include various  microwave  authorizations  currently held by Ameritech's  local
exchange   and   cellular   operations,    numerous   cellular   authorizations,
authorizations to provide long distance service and other authorizations used in
connection  with the  businesses  of such  subsidiaries.  The FCC is expected to
evaluate  whether SBC is qualified to control  Ameritech  and whether the public
interest,  convenience,  and necessity will be served by the transfer of control
that will be effected upon consummation of the Merger.  SBC and Ameritech intend
to file transfer of control  applications with the FCC which will seek the FCC's
approval to transfer the above-described  FCC licenses and  authorizations.  SBC
and Ameritech expect that these  applications  will demonstrate  compliance with
the FCC's  standards.  There can be no assurance as to when and if the requisite
FCC approvals will be obtained. In addition, there can be no assurance that such
approvals will not include  conditions  that could result in the  abandonment of
the Merger.

    The  FCC  has  established  certain  rules  and  regulations,  including  in
particular the cellular  cross-ownership  limits contained in 47 C.F.R.  Section
22.942,  that limit the ability of any single person to have an interest in more
than one cellular  license in the same market.  SBC and  Ameritech own competing
cellular  licenses in several markets,  including,  but not limited to, Chicago,
Illinois and St. Louis, Missouri (the "Overlapping Cellular Licenses").  SBC and
Ameritech  expect  that the FCC,  pursuant  to its rules and  regulations,  will
require  either  SBC or  Ameritech  to divest  one of the  Overlapping  Cellular
Licenses  in each  market.  In an  effort to  comply  with the  FCC's  rules and
regulations and certain  provisions of the Merger  Agreement,  SBC and Ameritech
are investigating  various  alternatives  regarding their  Overlapping  Cellular
Licenses.

    State PUCs

    Ameritech has subsidiaries  that operate as public utility or public service
companies in the states of Illinois, Michigan, Ohio, Wisconsin, and Indiana. The
PUCs in Illinois and Ohio have express  statutory  requirements that require SBC
and Ameritech to obtain their approval prior to the  consummation of the Merger.
There can be no assurance as to when and if the requisite PUC approvals  will be
obtained.  In addition,  there can be no assurance  that such approvals will not
include  conditions  that could  result in the  abandonment  of the Merger.  The
states of  Michigan and Wisconsin do not have express statutory requirements for
prior  approval  of the Merger by their  respective  state PUCs,  although  such
states may attempt to assert jurisdiction.  In addition,  SBC must file a notice
with the California Public Utility Commission  explaining how the Merger affects
the  analysis  used and  conditions  imposed by the  California  Public  Utility
Commission  in its order  granting  approval  of the  merger of SBC and  Pacific
Telesis Group.

    Illinois   Commerce   Commission.   Ameritech  has  two  operating   company
subsidiaries  in Illinois:  Illinois  Bell  Telephone  Company, d/b/a  Ameritech
Illinois,  and  Ameritech  Illinois  Metro,  Inc.  (collectively,  the "Illinois
Telecommunications  Carriers").  Because  the Merger is a  "reorganization"  for
purposes of the Illinois  Public  Utilities Act  ("IPUA"),  it is subject to the
jurisdiction  of the  Illinois  Commerce  Commission  ("ICC"),  and  may  not be
consummated without approval of the ICC. Similarly, the Merger will be deemed to
be a change in control of the Illinois  Telecommunications  Carriers, subject to
the  jurisdiction of the ICC. SBC and the Illinois  Telecommunications  Carriers
and, if required, Ameritech (collectively,  the "Applicants"),  intend to file a
joint application with the ICC (the "ICC Application")  requesting the necessary
approvals  to  consummate  the  Merger  and for SBC to  indirectly  control  the
Illinois  Telecommunications  Carriers.  The IPUA provides that the ICC will not
approve any "reorganization" if the ICC



                                       44

<PAGE>



finds, after notice and hearing,  that the reorganization  will adversely affect
the public  utility's  ability to perform its duties under the IPUA. In order to
find  that  there  will be no such  adverse  effect,  the ICC must find that the
reorganization  meets the requirements  specified in chapter 220 Section 5/7-204
of the Illinois Compiled  Statutes.  In approving the Merger, the ICC may impose
such terms,  conditions or  requirements  as, in its judgment,  are necessary to
protect the interests of the public  utility and its  customers.  The ICC has 11
months to make its decision on the ICC Application, unless the ICC finds that it
has been  delayed by the  Applicants'  failure to  provide  data or  information
requested  by the ICC or to provide  information  that the ICC has  ordered  the
Applicants to turn over to other  parties.  The ICC may extend the review period
for up to three  months if the ICC  Application  is amended or if  necessary  to
consider changes in  circumstances  after the filing of the ICC Application that
were not reasonably foreseeable.

    Public  Utility  Commission  of Ohio.  Ohio  Bell  Telephone  Company, d/b/a
Ameritech Ohio ("Ohio Bell"), a subsidiary of Ameritech, is a domestic telephone
company (as defined by the Ohio Public  Utility Act (the "Ohio  Act")).  Section
4905.402 of the Ohio Act provides that no person can acquire  control,  directly
or indirectly,  of a domestic telephone company or a holding company controlling
a domestic telephone company until that person obtains the prior approval of the
Public Utilities Commission of Ohio (the "PUCO"). SBC and Ameritech must file an
application  (the "Ohio  Application")  with the PUCO seeking  authority for the
deemed transfer of control of Ohio Bell to SBC. Under the provisions of the Ohio
Act, the Ohio  Application  must  demonstrate  that the transfer of control will
promote the public  convenience and result in the provision of adequate  service
for a reasonable rate, rental, toll or charge. A hearing on the Ohio Application
may be held by the PUCO, but is not required. If no hearing is held, the PUCO is
required to issue an order within 30 days of the filing of the Ohio Application.
If a hearing is held,  then the PUCO must  issue an order  within 20 days of the
conclusion of the hearing.  Section 4905.402 indicates that if, after the review
of the Ohio Application,  and after any necessary hearing, the PUCO is satisfied
that approval of the Ohio  Application  will promote the public  convenience and
result in the provision of adequate service for a reasonable rate, rental,  toll
or charge,  the PUCO shall  approve the  application  and make such orders as it
considers  proper.  If the PUCO does not issue an order  within the 30 or 20 day
time periods, the Ohio Application will be deemed approved by operation of law.

    PUC Approvals Regarding Intrastate Interexchange Service

    Ameritech  is  authorized  to  provide   interexchange   services  (the  "LD
Certificates")  in 45 states and the  District of  Columbia.  Ameritech  is also
authorized  to provide  local  exchange  services  (the "LE  Certificates",  and
together with the LD  Certificates,  the "State  Certificates")  in eight states
outside of its five state region. The State Certificates include  authorizations
for Ameritech,  or its  subsidiaries,  to provide local exchange services in the
states of California, Texas and Missouri, which are each states in which SBC has
a subsidiary  which is an incumbent  local exchange  carrier,  as defined by the
Telecommunications  Act.  Ameritech  may be  required  to modify or  withdraw LD
Certificates  in the states of  California,  Nevada,  Texas,  Missouri,  Kansas,
Arkansas and Oklahoma  depending upon the status of SBC's applications to obtain
authority  to  provide  long  distance  service  in these  states.  Furthermore,
authorization  may be required from certain other states to permit  Ameritech to
effect the deemed transfer of its existing long distance  authorizations  to SBC
or one of its subsidiaries.  In addition, Ameritech may be required to modify or
withdraw  its LE  Certificates  in the  states  of  California,  Nevada,  Texas,
Missouri, Kansas, Arkansas and Oklahoma as a result of this transaction. SBC may
be required to modify or amend any LD  Certificates  or LE  Certificates  it may
have in the states of Illinois, Indiana, Michigan, Ohio and Wisconsin.

    Municipal Cable Franchises

    Ameritech has been granted  cable  franchises  pursuant to  agreements  with
various  municipalities  ("Cable Franchise Agreements") located in the states of
Illinois, Michigan and Ohio. Under the Cable Franchise Agreements,  consummation
of the Merger may require the approval of the appropriate  municipality prior to
the Effective Time. Ameritech and SBC intend to seek any required approvals.

    European Regulatory Approvals

    SBC and  Ameritech  may be  required  to make  certain  notifications  to or
filings with regulatory  authorities in one or more European  countries in which
SBC or Ameritech has direct or indirect investments in telecommunications



                                       45

<PAGE>



companies.  SBC has investments in the United Kingdom,  France and  Switzerland.
Ameritech has equity  investments  in  telecommunications  companies in Belgium,
Germany, Denmark, Norway, and Hungary.

STOCK EXCHANGE LISTING AND DE-LISTING

    SBC has  agreed to use its best  efforts  to cause the  shares of SBC Common
Stock to be issued in the Merger to be approved for listing on the NYSE, subject
to official notice of issuance,  prior to the Closing Date. The Merger Agreement
provides that the Surviving  Corporation  will use its best efforts to cause the
shares of Ameritech  Common Stock to be de-listed  from the NYSE,  CSE, BSE, PSE
and  PHLX  and  de-registered  under  the  Exchange  Act as soon as  practicable
following the Effective Time.

EMPLOYEE BENEFITS

    Stock Options

    The Merger  Agreement  provides that at the Effective Time each  outstanding
Ameritech  Option under the Ameritech  Stock Plans,  whether vested or unvested,
will be deemed to constitute a Substitute  Option at an exercise  price equal to
the Substitute  Option Price.  For each  Substitute  Option  substituted  for an
Ameritech  Option that included a right under certain  circumstances  to receive
dividend  equivalents in the form of stock units ("Ameritech Stock Units"),  all
Ameritech  Stock Units credited to the account of the holder of such  Substitute
Option at the  Effective  Time  will,  as of the  Effective  Time,  be deemed to
constitute a number of stock units,  each of which will  represent  one share of
SBC  Common  Stock  ("SBC  Stock  Units"),  equal to the number of shares of SBC
Common Stock the holder of such  Substitute  Option would have been  entitled to
receive  pursuant to the Merger  Agreement had such  Ameritech  Stock Units been
distributed  to such holder in full  immediately  prior to the  Effective  Time.
Thereafter  SBC Stock  Units will  continue to be credited to the account of the
holder of such  Substitute  Option to the same  extent and on the same terms and
conditions  as they  would  have  under  the  Ameritech  Option  for  which  the
Substitute  Option was  substituted  (except  that the record dates and dividend
amounts will be the record dates and dividend amounts for SBC Common Stock), and
all such SBC Stock Units will be  distributed  at the same times and in the same
manner  as the  Ameritech  Stock  Units  would  have  been  distributed  had the
Substitute Option not been substituted for the Ameritech Option (except that the
option price used to determine if the SBC Stock Units can be distributed will be
the Substitute Option Price).

    The Merger  Agreement  further  provides  that at or prior to the  Effective
Time,  Ameritech  will  make all  necessary  arrangements  with  respect  to the
Ameritech  Stock Plans to permit the  assumption  of the  unexercised  Ameritech
Options by SBC and as soon as practicable  after the Effective Time SBC will use
its best  efforts  to  register  under the  Securities  Act on Form S-8 or other
appropriate  form  (and use its  best  efforts  to  maintain  the  effectiveness
thereof) shares of SBC Common Stock issuable pursuant to all Substitute Options.
The Merger Agreement further provides that, effective at the Effective Time, SBC
will assume each Ameritech  Option in accordance with the terms of the Ameritech
Stock Plan under which it was issued and the stock option  agreement by which it
is  evidenced  and that as promptly as  practicable  after the  Effective  Time,
Ameritech  will  deliver  to the  participants  in  the  Ameritech  Stock  Plans
appropriate  notices  setting forth such  participants'  rights pursuant to such
assumed Ameritech Options.

    Benefit Plans

    Pursuant  to the  Merger  Agreement,  SBC  agrees  that  it will  cause  the
Surviving Corporation for at least two years after the Effective Time to provide
or  cause  to be  provided  to  employees  of  Ameritech  and  its  Subsidiaries
compensation  and benefit plans that are no less  favorable,  in the  aggregate,
than the Ameritech Compensation and Benefit Plans specifically disclosed to SBC.
However,  if during  this  period SBC  implements  any  widespread  increase  or
decrease in benefits under compensation and benefit plans or in the cost thereof
to participants  under compensation and benefit plans applicable to employees of
SBC  and  its  Subsidiaries  (other  than  the  Surviving  Corporation  and  its
Subsidiaries),   the  Surviving  Corporation  will  proportionately  adjust  the
benefits under Ameritech's compensation and benefit plans or the cost thereof to
participants.  Notwithstanding the foregoing, the Merger Agreement provides that
with respect to employees who are subject to collective bargaining, all benefits
will be provided only in accordance  with the applicable  collective  bargaining
agreement.  Pursuant to the Merger Agreement, at or prior to the Effective Time,
Ameritech  will make all necessary  arrangements  to cause any Ameritech  Common
Stock units under the Ameritech  Compensation  and Benefit Plans to be converted
into share units with respect to SBC Common Stock by  multiplying  the shares of
Ameritech  Common  Stock  subject to such  Ameritech  Common  Stock units by the
Exchange Ratio. In addition,  the Merger  Agreement  provides that SBC will, and
will cause the Surviving Corporation to, honor, pursuant to their terms,



                                       46

<PAGE>



all  employee  benefit  obligations  existing at the Closing Date to current and
former employees under the Ameritech Compensation and Benefit Plans.

EXPENSES

    Whether or not the Merger is consummated, all costs and expenses incurred in
connection with the Merger  Agreement and the Merger and the other  transactions
contemplated  by the Merger  Agreement will be paid by the party  incurring such
expense, except that expenses incurred in connection with the filing fee for the
Registration  Statement  and printing  and mailing  this Joint  Prospectus/Proxy
Statement  and the  Registration  Statement and the filing fee under the HSR Act
will be shared equally by SBC and Ameritech.

INDEMNIFICATION; DIRECTORS' AND OFFICERS' INSURANCE

    The Merger  Agreement  provides that, from and after the Effective Time, SBC
will, and will cause the Surviving  Corporation to,  indemnify and hold harmless
each Indemnified  Party against any Costs incurred in connection with any claim,
action,   suit,   proceeding  or   investigation,   whether   civil,   criminal,
administrative  or  investigative,  arising  out  of or  pertaining  to  matters
existing or occurring at or prior to the  Effective  Time,  whether  asserted or
claimed  prior  to,  at or after  the  Effective  Time,  to the  fullest  extent
permitted  under Delaware law (and the Surviving  Corporation  will also advance
expenses as  incurred to the fullest  extent  permitted  under  applicable  law,
provided the Person to whom  expenses are advanced  provides an  undertaking  to
repay such  advances  if it is  ultimately  determined  that such  person is not
entitled to indemnification).

    The Merger  Agreement  also  provides that the  Surviving  Corporation  will
maintain D&O  Insurance  with coverage in amount and scope at least as favorable
as Ameritech's  existing  directors' and officers'  liability insurance coverage
for a period of six years after the Effective Time. However, if the existing D&O
Insurance expires, is terminated or cancelled, or if the annual premium therefor
is  increased to an amount in excess of 175% the Current  Premium,  in each case
during such six year period, the Surviving Corporation will use its best efforts
to obtain D&O  Insurance  in an amount and scope as great as can be obtained for
the  remainder  of such  period for a premium  not in excess  (on an  annualized
basis) of 175% of the Current Premium.

DIVIDENDS

    The Merger  Agreement  provides that Ameritech will  coordinate with SBC the
declaration, setting of record dates and payment dates of dividends on shares of
Ameritech  Common Stock so that holders of Ameritech Common Stock do not receive
dividends on both  Ameritech  Common Stock and SBC Common Stock  received in the
Merger in respect  of any  calendar  quarter  or fail to  receive a dividend  on
either  Ameritech  Common  Stock or SBC Common  Stock  received in the Merger in
respect of any calendar quarter.

SBC BOARD FOLLOWING THE MERGER

    SBC has agreed  pursuant to the Merger  Agreement that at the Effective Time
SBC will enable up to five members of the  Ameritech  Board to be members of the
SBC Board. The SBC Board will, in consultation  with the Chief Executive Officer
of Ameritech and the Ameritech Board,  select the director designees and appoint
each such director designee to the SBC Board as of the Effective Time, with such
director  designees divided as nearly evenly as is possible among the classes of
directors on the SBC Board.  SBC and Ameritech expect that Mr. Notebaert will be
one of the  members of the  Ameritech  Board who will become a member of the SBC
Board as of the Effective Time.

CONDITIONS

    The respective  obligations  of Ameritech,  SBC and Merger Sub to effect the
Merger are subject to the  satisfaction  or waiver at or prior to the  Effective
Time of each of the following  conditions:  (a) the Merger Agreement having been
duly adopted by holders of  Ameritech  Common Stock and having been duly adopted
by the sole  stockholder of Merger Sub, and the issuance of shares of SBC Common
Stock pursuant to the Merger  Agreement having been duly approved by the holders
of shares of SBC Common  Stock;  (b) the shares of SBC Common Stock  issuable to
Ameritech  shareowners  pursuant to the Merger  Agreement having been authorized
for listing on the NYSE upon official notice of issuance; (c) the waiting period
applicable to the consummation of the Merger under the HSR Act having expired or
been terminated and all material  Ameritech  Required  Consents and material SBC
Required  Consents  from or with any  Governmental  Entity  having  been made or
obtained pursuant to a Final Order (as defined below), free of any

                                       47
<PAGE>

conditions  (other  than  conditions  that  are not  reasonably  likely,  either
individually or in the aggregate, to have a Regulatory Material Adverse Effect);
(d) no Governmental  Entity of competent  jurisdiction  having enacted,  issued,
promulgated,  enforced or entered any Order,  and no Governmental  Entity having
instituted any  proceeding,  or, in the case of a federal  Governmental  Entity,
threatened in writing to institute any proceeding,  seeking any such Order;  (e)
the Registration  Statement having become effective under the Securities Act and
no stop order suspending the effectiveness of the Registration  Statement having
been issued,  and no  proceedings  for that purpose  having been initiated or be
threatened by the SEC; (f) SBC and Ameritech having received  "comfort"  letters
in customary  form and substance and letters from their  respective  independent
public  accounting firms to the effect that the Merger will qualify for "pooling
of  interests"  accounting  treatment;  and (g) SBC  having  received  all state
securities  and "blue sky" permits and  approvals  necessary to  consummate  the
transactions contemplated by the Merger Agreement.

    For purposes of the Merger Agreement, the term "Final Order" means an action
or decision  that has been  granted as to which (a) no request for a stay or any
similar request is pending, no stay is in effect, the action or decision has not
been vacated,  reversed,  set aside,  annulled or suspended and any deadline for
filing  such a request  that may be  designated  by  statute or  regulation  has
passed,  (b) no petition for rehearing or  reconsideration  or  application  for
review  is  pending  and the  time  for  the  filing  of any  such  petition  or
application has passed, (c) no Governmental  Entity has undertaken to reconsider
the  action on its own  motion  and the time  within  which it may  effect  such
reconsideration  has  passed  and (d) no  appeal  is  pending  (including  other
administrative  or judicial review) or in effect and any deadline for filing any
such appeal that may be  specified  by statute or rule has passed,  which in any
such case  (a),  (b),  (c) or (d) is  reasonably  likely to result in  vacating,
reversing,  setting  aside,  annulling,  suspending or modifying  such action or
decision (in any such case in a manner  which would have a  Regulatory  Material
Adverse Effect following the Effective Time).

    For purposes of the Merger Agreement,  the necessary filings, notices and/or
approvals (i) under the HSR Act, the Exchange Act and the  Securities  Act, (ii)
to comply with state  securities  or "blue-sky"  laws,  (iii) if any, of the FCC
pursuant to the  Telecommunications  Act, (iv) if any, of the PUC and the local,
state and foreign  Governmental  Entities  identified by SBC or Ameritech to one
another  pursuant to  Utilities  Laws and (v) if any, of the foreign  regulatory
bodies  identified  by SBC or  Ameritech to one another  pursuant to  applicable
foreign laws regulating  actions having the purpose or effect of  monopolization
or restraint  of trade with respect to SBC are referred to as the "SBC  Required
Consents"  and with  respect to  Ameritech  are  referred  to as the  "Ameritech
Required Consents."

    The  obligations of SBC and Merger Sub to effect the Merger are also subject
to the  satisfaction  or waiver by SBC at or prior to the Effective  Time of the
following  conditions:  (a) the  representations and warranties of Ameritech set
forth in the Merger  Agreement (i) to the extent  qualified by Material  Adverse
Effect  being true and correct and (ii) to the extent not  qualified by Material
Adverse  Effect being true and  correct,  except that such  representations  and
warranties   will  be  deemed   satisfied  so  long  as  any  failures  of  such
representations  and warranties to be true and correct,  taken together,  do not
have a Material  Adverse  Effect on Ameritech,  in each case (i) and (ii), as of
the Closing  Date as though made on and as of the  Closing  Date  (except to the
extent such  representations  and warranties  speak as of an earlier date);  (b)
Ameritech's  having performed in all material respects all obligations  required
to be  performed  by it under the Merger  Agreement  at or prior to the  Closing
Date;  (c)  Ameritech's  having  obtained the consent or approval of each Person
whose  consent or approval is required in order to consummate  the  transactions
contemplated  by the Merger  Agreement  under any Contract to which Ameritech or
any of its Subsidiaries is a party, except those for which the failure to obtain
such consent or approval,  individually  or in the aggregate,  is not reasonably
likely to have, a Material  Adverse  Effect on  Ameritech;  and (d) SBC's having
received the opinion of Sullivan & Cromwell,  counsel to SBC,  dated the Closing
Date,  to the effect  that the Merger  will be treated  for  federal  income tax
purposes as a  reorganization  within the meaning of Section 368(a) of the Code,
and  that  each  of  SBC,  Merger  Sub and  Ameritech  will  be a party  to that
reorganization within the meaning of Section 368(b) of the Code.

    The  obligation  of  Ameritech  to effect the Merger is also  subject to the
satisfaction  or waiver by  Ameritech at or prior to the  Effective  Time of the
following  conditions:  (a) the representations and warranties of SBC and Merger
Sub set forth in the Merger  Agreement  (i) to the extent  qualified by Material
Adverse  Effect being true and correct,  and (ii) to the extent not qualified by
Material Adverse Effect being true and correct, except that such representations
and  warranties  will  be  deemed  satisfied  so long  as any  failures  of such
representations  and warranties to be true and correct,  taken together,  do not
have a  Material  Adverse  Effect on SBC,  in each case (i) and (ii),  as of the
Closing  Date as though made on and as of the Closing Date (except to the extent
such  representations  and warranties  speak as of an earlier date); (b) each of
SBC and Merger Sub having  performed  in all material  respects all  obligations
required to be  performed  by it under the Merger  Agreement  at or prior to the
Closing Date; and (c) Ameritech  having  received the opinion of Skadden,  Arps,
Slate, Meagher & Flom (Illinois),  counsel to Ameritech, dated the Closing Date,
to the effect that the

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<PAGE>

    Merger will be treated for federal  income tax purposes as a  reorganization
within the meaning of Section 368(a) of the Code,  and that each of SBC,  Merger
Sub and Ameritech will be a party to that  reorganization  within the meaning of
Section 368(b) of the Code.

TERMINATION

    The Merger  Agreement  provides that it may be terminated and the Merger may
be abandoned at any time prior to the Effective  Time,  whether  before or after
the approval by shareowners  of Ameritech and SBC by mutual  written  consent of
Ameritech and SBC authorized by action of their respective  Boards of Directors.
The Merger  Agreement  further provides that it may be terminated and the Merger
may be abandoned at any time prior to the Effective Time by action of either the
SBC Board or the Ameritech  Board if (a) the Merger has not been  consummated by
the Termination Date,  whether such date is before or after the date of approval
by the  shareowners  of  Ameritech  or SBC  (provided,  however,  that if SBC or
Ameritech  determines  that  additional  time is  necessary in  connection  with
obtaining a SBC Required  Consent or an Ameritech  Required Consent from or with
any  Governmental  Entity,  the  Termination  Date may be extended  for up to 60
calendar  days at any one time by SBC or Ameritech  from time to time by written
notice to the other  party up to a date not beyond  March 31,  2000,  which date
will be deemed to be the  Termination  Date),  (b) the  adoption  of the  Merger
Agreement by Ameritech's  shareowners has not occurred at the Ameritech  Special
Meeting, (c) the approval of SBC's shareowners necessary to approve the issuance
of shares of SBC Common  Stock  pursuant  to the Merger  Agreement  has not been
obtained at the SBC Special Meeting,  or (d) any Order permanently  restraining,
enjoining or otherwise prohibiting  consummation of the Merger becomes final and
non-appealable  (whether  before  or  after  the  adoption  or  approval  by the
shareowners  of  Ameritech  or SBC,  as the case may be).  The Merger  Agreement
provides that the right to terminate the Merger Agreement pursuant to clause (a)
above will not be  available  to any party  that has  breached  in any  material
respect  its  obligations   under  the  Merger  Agreement  in  any  manner  that
proximately contributes to the failure of the Merger to be consummated.

    The Merger  Agreement also provides that it may be terminated and the Merger
may be  abandoned at any time prior to the  Effective  Time,  whether  before or
after the adoption of the Merger  Agreement by the shareowners of Ameritech,  by
action of the Ameritech Board: (a) if (i) the Ameritech Board approves  entering
into a binding written  agreement  concerning a transaction  that  constitutes a
Superior Ameritech Proposal and Ameritech notifies SBC in writing that Ameritech
desires  to enter  into  such  agreement,  (ii) SBC does not  make,  within  ten
calendar days after receipt of Ameritech's written notification of its desire to
enter into a binding agreement for a Superior Ameritech  Proposal,  the terms of
which are specified in such notice,  an offer that the Ameritech Board believes,
in good faith after  consultation  with its financial  advisors,  is at least as
favorable,  from a financial  point of view, to the  shareowners of Ameritech as
the Superior Ameritech  Proposal,  and (iii) Ameritech prior to such termination
pays to SBC in immediately available funds any fees required to be paid pursuant
to the Merger Agreement;  or (b) if (i) the SBC Board has withdrawn or adversely
modified  its  approval of the Merger  Agreement  or its  recommendation  to the
shareowners of SBC that such  shareowners  approve the issuance of shares of SBC
Common  Stock  pursuant  to the Merger  Agreement  or failed to  reconfirm  such
recommendation within fifteen business days after a written request by Ameritech
to do so  (provided  that such a request  is made after the SBC Board or any SBC
Representative  has taken any of the  actions  that would be  proscribed  by the
provisions of the Merger Agreement  relating to SBC Acquisition  Proposals,  but
for the exception in such provisions  allowing  certain actions to be taken with
respect to any bona fide  written  SBC  Acquisition  Proposal  that has not been
withdrawn or rejected by the SBC Board),  (ii) there has been a material  breach
by SBC or Merger Sub of any  representation,  warranty,  covenant  or  agreement
contained  in the Merger  Agreement  which (x) would  result in a failure of the
condition relating to SBC and Merger Sub's representations and warranties or the
condition  relating to performance in all material  respects of all  obligations
required to be performed  by SBC or Merger Sub pursuant to the Merger  Agreement
and (y) cannot be or is not cured prior to the Termination Date, or (iii) SBC or
any SBC Representative  takes any of the actions that would be proscribed by the
terms of the Merger Agreement relating to SBC Acquisition Proposals.

    The Merger  Agreement may be  terminated  and the Merger may be abandoned at
any time  prior to the  Effective  Time,  before  or after the  approval  by the
shareowners  of SBC,  by  action  of the  SBC  Board:  (a) if (i) the SBC  Board
approves entering into a binding written agreement concerning a transaction that
constitutes a Superior SBC Proposal

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<PAGE>

and SBC  notifies  Ameritech  in  writing  that SBC  desires  to enter into such
agreement,  (ii) Ameritech does not make, within ten days after receipt of SBC's
written  notification  of its  desire to enter  into a binding  agreement  for a
Superior SBC Proposal, the terms of which are specified in such notice, an offer
that the SBC Board believes, in good faith after consultation with its financial
advisors,  is at least as  favorable,  from a  financial  point of view,  to the
shareowners  of SBC as the  Superior SBC  Proposal,  and (iii) SBC prior to such
termination  pays to Ameritech in immediately  available funds any fees required
to be paid pursuant to the Merger  Agreement,  or (b) if (i) the Ameritech Board
has  withdrawn  or  adversely   modified  its  approval  or   recommendation  to
Ameritech's  shareowners  of the Merger  Agreement,  or failed to reconfirm such
recommendation within fifteen business days after a written request by SBC to do
so  (provided  that such a request  is made  after  the  Ameritech  Board or any
Ameritech  Representative  has taken any of the actions that would be proscribed
by the  provisions  of the Merger  Agreement  relating to Ameritech  Acquisition
Proposals but for the exception in such provisions  allowing  certain actions to
be taken with respect to any bona fide written  Ameritech  Acquisition  Proposal
that has not been withdrawn or rejected by the Ameritech  Board,  (ii) there has
been a material breach by Ameritech of any representation, warranty, covenant or
agreement  contained in the Merger Agreement which (x) would result in a failure
of a condition  relating to  Ameritech's  representations  and warranties or the
condition  relating to performance in all material  respects of all  obligations
required to be performed by Ameritech  pursuant to the Merger  Agreement and (y)
cannot be or is not cured prior to the  Termination  Date, or (iii) if Ameritech
or any  Ameritech  Representative  takes  any  of  the  actions  that  would  be
proscribed  by  provisions  of  the  Merger  Agreement   relating  to  Ameritech
Acquisition  Proposals but for the exception therein allowing certain actions to
be taken.

    In the event of termination of the Merger  Agreement and the  abandonment of
the Merger pursuant to the termination  provisions  enumerated above, the Merger
Agreement  (other than those provisions  which will  specifically  survive) will
become void and of no effect with no liability on the part of any party  thereto
(or of any of its directors,  officers,  employees,  agents,  legal or financial
advisors or other representatives);  provided, however, no such termination will
relieve any party  thereto from any  liability  for damages  resulting  from any
willful  and  intentional  breach of the Merger  Agreement  (to the extent  such
damages  exceed  any  Termination  Fee as  described  below  under  "--  Certain
Termination Fees") or from any obligation to pay, if applicable, the Termination
Fee.

CERTAIN TERMINATION FEES

    The  Merger  Agreement  provides  that (a) in the event that (i) a bona fide
Ameritech  Acquisition  Proposal  has been made to  Ameritech  and made known to
shareowners  generally or has been made directly to shareowners generally or any
Person has publicly  announced an intention (whether or not conditional) to make
a bona  fide  Ameritech  Acquisition  Proposal  and such  Ameritech  Acquisition
Proposal or announced  intention has not been  withdrawn  prior to the Ameritech
Special Meeting and thereafter the Merger  Agreement is terminated by either SBC
or Ameritech because adoption of the Merger Agreement by Ameritech's shareowners
at the Ameritech  Special  Meeting has not occurred and within nine months after
such termination  Ameritech enters into an agreement to consummate a transaction
that would constitute an Ameritech  Acquisition  Proposal if it were the subject
of a proposal,  or (ii) the Merger  Agreement  is  terminated  (x) by  Ameritech
pursuant to the  provisions  of the Merger  Agreement  permitting  Ameritech  to
terminate if the Ameritech  Board has approved  entering into a binding  written
agreement  concerning  a  transaction  that  constitutes  a  Superior  Ameritech
Proposal  and SBC has not made,  within  ten  calendar  days  after  receipt  of
Ameritech's written notification of its desire to enter into a binding agreement
for a Superior Ameritech Proposal an offer that the Ameritech Board believes, in
good  faith  after  consultation  with its  financial  advisors,  is at least as
favorable,  from a financial  point of view, to the  shareowners of Ameritech as
the Superior  Ameritech Proposal or (y) by SBC pursuant to the provisions of the
Merger Agreement permitting  termination (A) if the Ameritech Board withdraws or
adversely modifies its approval or recommendation to Ameritech's  shareowners of
the Merger  Agreement or fails to reconfirm such  recommendation  within fifteen
business days after a written request by SBC to do, (B) if Ameritech  materially
breaches any  representation,  warranty,  covenant or agreement contained in the
Merger  Agreement  which would result in a failure of the condition  relating to
Ameritech's   representations  and  warranties  or  the  condition  relating  to
performance  by  Ameritech  in  all  material  respects  of all  obligations  of
Ameritech  under the Merger  Agreement  (solely  with  respect to a willful  and
intentional  breach) or (C) if Ameritech or any Ameritech  Representative  takes
any of the  actions  that  would  be  proscribed  by  provisions  of the  Merger
Agreement relating to Ameritech Acquisition Proposals but for the exception

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<PAGE>

therein allowing certain actions to be taken, then Ameritech will promptly,  but
in no event  later than two days after the date of such  termination  (except as
otherwise  provided  in the Merger  Agreement),  or, in the case of  termination
because of Ameritech's  shareowners'  failure to adopt the  agreement,  two days
after the relevant agreement is entered into, pay SBC the Termination Fee, which
amount will be exclusive of any amounts to be paid  pursuant to the provision of
the Merger Agreement relating to the sharing of expenses.  See "--Expenses."

    The Merger Agreement further provides that in the event that (i) a bona fide
SBC  Acquisition  Proposal  has been made to SBC and made  known to  shareowners
generally or has been made directly to  shareowners  generally or any Person has
publicly announced an intention (whether or not conditional) to make a bona fide
SBC  Acquisition  Proposal  and  such  SBC  Acquisition  Proposal  or  announced
intention has not been withdrawn prior to the SBC Special Meeting and thereafter
the Merger  Agreement is  terminated by Ameritech or SBC because the approval of
SBC's  shareowners  necessary  for the  issuance  of shares of SBC Common  Stock
pursuant to the Merger  Agreement  has not been  obtained and within nine months
after such  termination SBC enters into an agreement to consummate a transaction
that would  constitute  a SBC  Acquisition  Proposal if it were the subject of a
proposal,  or (ii) the Merger Agreement is terminated (x) by SBC pursuant to the
provisions  of the  Merger  Agreement  permitting  SBC to  terminate  the Merger
Agreement  if the  SBC  Board  has  approved  entering  into a  binding  written
agreement  concerning a transaction that constitutes a Superior SBC Proposal and
Ameritech does not make, within ten calendar days after receipt of SBC's written
notification of its desire to enter into a binding  agreement for a Superior SBC
Proposal an offer that the SBC Board believes,  in good faith after consultation
with its financial advisors, is at least as favorable, from a financial point of
view, to the shareowners of SBC as the Superior SBC Proposal or (y) by Ameritech
pursuant to the provisions of the Merger Agreement permitting termination (A) if
the SBC Board withdraws or adversely  modifies its approval or recommendation to
SBC's  shareowners  of the  issuance  of shares of SBC Common  Stock or fails to
reconfirm  such  recommendation  within  fifteen  business  days after a written
request by  Ameritech to do so or (B) if SBC or Merger Sub  materially  breaches
any  representation,  warranty,  covenant or  agreement  contained in the Merger
Agreement  which would  result in a failure of the  condition  relating to SBC's
representations  and warranties or the condition  relating to performance by SBC
or Merger Sub in all material  respects of all obligations of SBC and Merger Sub
under the Merger  Agreement  (solely with  respect to a willful and  intentional
breach) or (C) if SBC or any SBC  Representative  takes any of the actions  that
would be  proscribed  by  provisions  of the Merger  Agreement  relating  to SBC
Acquisition  Proposals but for the exception therein allowing certain actions to
be taken, then SBC will promptly,  but in no event later than two days after the
date of such termination  (except as otherwise provided in the Merger Agreement)
or, in the case of a termination because of the failure to obtain SBC shareowner
approval of the  issuance of shares of SBC Common  Stock  pursuant to the Merger
Agreement,  two (2) days  after the  relevant  agreement  is entered  into,  pay
Ameritech a fee equal to the Termination  Fee, which amount will be exclusive of
any amounts to be paid  pursuant to  provision  relating to sharing of expenses.
See "--Expenses."

RESALE OF SBC COMMON STOCK

    The shares of SBC Common  Stock  issuable to  shareowners  of  Ameritech  in
connection with the Merger have been  registered  under the Securities Act. Such
shares may be traded freely and without  restriction  by those  shareowners  not
deemed  to be  "affiliates"  of  Ameritech  prior to the  date of the  Ameritech
Special Meeting, or of SBC following the Effective Time, as that term is defined
in the rules under the Securities  Act.  "Affiliates"  are generally  defined as
persons  who  control,  are  controlled  by or are  under  common  control  with
Ameritech at the time of the  Ameritech  Special  Meeting or SBC  following  the
Effective  Time.  Shares of SBC Common Stock  received by those  shareowners  of
Ameritech who are deemed to be  "affiliates"  of Ameritech may be resold without
registration  as provided  for by Rules 144 or 145, or as  otherwise  permitted,
under the Securities Act, subject to the provisions of the Ameritech  Affiliates
Letter referred to below. This Joint Proxy  Statement/Prospectus  does not cover
any resales of SBC Common  Stock  received by  affiliates  of  Ameritech  in the
Merger or by certain of their family members or related interests.

    Pursuant to the Merger  Agreement,  each of Ameritech  and SBC has agreed to
deliver to the other a letter identifying all persons whom such company believes
to be, as of the date of the Ameritech  Special  Meeting,  "affiliates"  of such
company  for  purposes  of  applicable  interpretations  regarding  use  of  the
"pooling-of-interests"  accounting  method and, in the case of  "affiliates"  of
Ameritech,  for purposes of Rule 145 under the Securities Act. Each of Ameritech
and SBC has agreed to use all  reasonable  best efforts to cause each person who
is identified as an  "affiliate"  in the letter  referred to above to deliver to
SBC prior to the date of the Ameritech  Special  Meeting a written  agreement in
the appropriate form attached to the Merger Agreement (in the case of affiliates
of Ameritech, an "Ameritech Affiliates Letter" and, in the case of affiliates of
SBC, an "SBC  Affiliates  Letter").  The provisions of the Ameritech  Affiliates
Letter  restrict  certain  sales  of  securities  of SBC by such  affiliates  of
Ameritech  prior to and following the Effective  Time and sales of securities of
Ameritech at certain times prior to the Effective Time. The provisions of the

                                       51
<PAGE>

SBC Affiliates  Letter  restrict sales of securities of SBC by affiliates of SBC
at certain times prior to and following the Effective Time.

DISSENTERS' RIGHTS OF APPRAISAL

    In  accordance  with Section 262 of the DGCL,  no  appraisal  rights will be
available  to either  holders of  Ameritech  Common Stock or SBC Common Stock in
connection with the Merger.  No appraisal rights will be available to holders of
SBC Common Stock in connection  with the Bylaw  Amendment or the Share  Increase
Proposal.

INTERESTS OF CERTAIN PERSONS IN THE MERGER

    In  considering  the  recommendation  of  the  Ameritech  Board,   Ameritech
shareowners  should be aware that certain members of Ameritech's  management and
of the Ameritech Board have certain interests in the Merger that are in addition
to the interests of shareowners generally.

    Board of Directors following the Merger

    SBC has agreed  pursuant to the Merger  Agreement that at the Effective Time
SBC will enable up to five members of the Ameritech  Board to become  members of
the SBC Board.  The SBC Board, in  consultation  with the Chairman of the Board,
President and Chief Executive Officer of Ameritech and the Ameritech Board, will
select the director designees and appoint each such director designee to the SBC
Board as of the Effective Time, with such director  designees  divided as nearly
evenly as is possible  among the classes of directors on the SBC Board.  SBC and
Ameritech  expect that Mr. Notebaert will be one of the members of the Ameritech
Board who will become a member of the SBC Board as of the Effective Time.

    Directors' Plan

    Under Ameritech's  Deferred  Compensation  Plan for Non-Employee  Directors,
directors who are not employees of Ameritech may elect to defer receipt of their
retainers for service on the Ameritech  Board in the form of cash units or stock
units.  The Ameritech Board has determined that under the terms of such plan, as
a result of the Merger,  deferred amounts will be paid out in a lump sum as soon
as  practicable  after the Effective  Time.  Stock units will be valued for this
purpose at the highest sales price of Ameritech  Common Stock as reported on the
NYSE Composite  Transactions  Tape during the thirty days prior to the Effective
Time. The Ameritech directors who have deferred accounts under the plan, and the
current value thereof,  based on a price per share of Ameritech  Common Stock of
$43.9375,  the closing  price on June 2, 1998,  are Donald C.  Clark,  $985,035;
James A. Henderson,  $908,535;  Sheldon B. Lubar, $402,643;  Arthur C. Martinez,
$170,434; John B. McCoy, $323,775; and James A. Unruh, $156,187.

    Stock Options

    Substantially  all Ameritech  Options granted prior to May 11, 1998 pursuant
to Ameritech Compensation and Benefit Plans become fully vested upon a change in
control  and  certain  associated  agreements  not  to  compete  with  Ameritech
terminate  upon  a  change  in  control  under  the  terms  of  such  associated
agreements.  The Ameritech  Board has  concluded  that the  consummation  of the
Merger will constitute a change in control under the Ameritech  Compensation and
Benefit Plans.  The following table sets forth,  with respect to Mr.  Notebaert,
Mr. Shaffer,  Barry K. Allen,  Executive Vice President Regulatory and Wholesale
Operations,  W. Patrick Campbell,  Executive Vice President - Corporate Strategy
and Business  Development  and Thomas E.  Richards,  Executive  Vice President -
Communications and Information Products,  the named executive officers set forth
in Ameritech's  proxy  statement for the 1998 annual meeting of its  shareowners
(the "Named Executive Officers"),  and all other executive officers of Ameritech
as a group,  based on the closing  price per share of Ameritech  Common Stock of
$43.9375 on June 2, 1998, and an assumed  Effective Time of May 1, 1999: (i) the
number of shares of Ameritech


                                       52

<PAGE>

Common Stock subject to Ameritech  Options held by such persons that will become
exercisable at the Effective Time, (ii) the weighted  average exercise price for
such  Ameritech  Options held by such persons and (iii) the  aggregate  value of
such Ameritech Options held by such persons,  in each case based upon the number
of  outstanding  Ameritech  Options  held by such persons as of the date of this
Joint Proxy Statement/Prospectus:

<TABLE>
<CAPTION>
                                  Options Which Become
                                     Exercisable At               Weighted Average             Aggregate Value of
                                   The Effective Time         Exercise Price Per Share               Options
                                 ----------------------       ------------------------         ------------------
<S>                                   <C>                           <C>                           <C>

Mr. Notebaert................            749,624                     $31.4459                      $9,539,829

Mr. Shaffer..................            344,136                      36.0197                       2,781,415

Mr. Campbell.................            188,198                      35.9129                       1,545,033

Mr. Allen....................            265,900                      36.1507                       2,117,290

Mr. Richards.................            291,498                      34.7636                       2,707,770

All executive officers
as a group (15 persons
in total)....................          2,479,578                      34.5471                       23,770,883
</TABLE>


    Under the terms of certain of the  foregoing  options,  dividend  equivalent
shares are credited  quarterly for up to five years on the shares subject to the
options (and on previously  credited dividend equivalent shares) by dividing the
aggregate  cash  dividend that would have been paid on such shares had they been
outstanding by the then current market price of the Ameritech  Common Stock. The
dividend  equivalents  will be  distributed in the form of shares of stock after
the  earlier of the  exercise of the option or the first set  distribution  date
which is at least five  years  from the date of grant on which the then  current
market  price  exceeds the  exercise  price.  The number of dividend  equivalent
shares credited to date on options that will become exercisable at the Effective
Time and the value of such dividend equivalent shares based on the closing price
per share of  Ameritech  Common  Stock of  $43.9375  on June 2, 1998 were 16,332
($717,587)  for all  executive  officers  as a  group,  including  4,282  shares
($188,140) for Mr.  Notebaert;  1,537 shares  ($67,532) for Mr.  Shaffer;  1,215
shares  ($53,384) for Mr.  Campbell;  1,118 shares  ($49,122) for Mr. Allen; and
3,858 shares ($169,511) for Mr. Richards.

    Change in Control Agreements and Severance Plan

    In connection with their respective appointments to the Management Committee
of Ameritech,  Ameritech  entered into agreements  regarding  changes in control
with  Messrs.  Notebaert,  Campbell,  Shaffer,  Allen and Richards and the three
other members of the Management  Committee of Ameritech.  The agreements provide
that each executive  officer's  compensation  and employee  benefits will not be
reduced following a change in control.  The agreements also provide that, if the
executive  officer's  employment  with Ameritech is terminated  under  specified
circumstances,  the executive  officer will continue to receive certain medical,
insurance and other employee benefit coverage and perquisites for a period of 24
months  following such termination and will receive a lump sum payment up to the
sum of (i) 2.99  times  the  executive  officer's  annual  base  salary  and the
executive officer's short term incentive award for the preceding year, plus (ii)
the  actuarial  equivalent  of the  additional  pension  benefits the  executive
officer would have accrued under Ameritech's qualified and non-qualified pension
arrangements,  if, on the date of  termination,  the executive had been credited
with two  additional  years of age,  service and  compensation  (base salary and
target short term  incentive  award).  Under such plans,  these benefits will be
provided to the  executive  officers  other than Mr.  Notebaert if the executive
officer's  employment  is  terminated  involuntarily  for any reason  other than
death,  disability or just cause during the 24 month period following the change
in  control  or  voluntarily  by the  executive  during  the  thirty-day  period
beginning  on  the  first  anniversary  of the  change  in  control,  and to Mr.
Notebaert if his employment is voluntarily or  involuntarily  terminated  (other
than for death,  disability or just cause) during the 24 month period  following
the change in control.  The Ameritech Board has concluded that the  consummation
of the Merger will  constitute  a change in control  under the Change in Control
Agreements.

                                       53
<PAGE>


    Approximately 220 members of the management of Ameritech  participate in the
Corporate  Resource Severance Pay Plan (the "Severance Plan") which provides for
severance payments upon termination of employment after a change in control. The
Ameritech  Board  has  concluded  that  the  consummation  of  the  Merger  will
constitute a change in control under the  Severance  Plan.  The  Severance  Plan
provides that base salaries for such employees and certain  incentive  plans and
benefit  plans  will  not be  materially  reduced  during  the 24  month  period
following the Merger and provides for a severance benefit to such employees,  in
an amount up to two times the sum of their base annual  salary and their  target
short-term  incentive  award and other bonuses for the year preceding the change
in control,  and the actuarial equivalent of the additional pension benefits the
employee  would have  accrued  under the  qualified  and  non-qualified  pension
arrangements  of Ameritech  if, on the date of  termination,  he or she had been
credited with two additional years of age, service and compensation (base salary
and  target  short  term  incentive  award).   Under  the  Severance  Plan,  the
aforementioned   benefits  become  payable  if  the  employee's   employment  is
terminated  by Ameritech  other than for cause or  disability or by the employee
for good  reason  during the 24 months  following  a change in control or at the
employee's  discretion  during the 30-day period following the first anniversary
of the  change  in  control.  In  addition,  if at the  time  of the  employee's
termination of  employment,  such employee is a participant in the Ameritech Key
Management Life Insurance Plan and/or the Ameritech Estate Preservation Plan and
is not then  Retirement  Eligible (as defined in these  plans),  Ameritech  will
contribute  on  the  employee's  behalf,  for a  period  of  not  less  than  24
consecutive months immediately following the date of termination, such amount as
Ameritech  in its sole  discretion  determines  to be  needed  to  maintain  the
employee's  death benefits under such plans. The employee also shall be entitled
to receive  certain  medical  insurance and other benefits and perquisites for a
period of 24 months.

    The  aggregate  amount of payments to be made by  Ameritech  pursuant to the
Change in  Control  Agreements  and the  Severance  Plan  cannot  be  determined
definitively  at this  time;  however,  the  maximum  aggregate  amount  of such
payments, if all covered employees were terminated under circumstances entitling
them to severance benefits, is estimated to be approximately $38,900,000 for all
executive officers as a group, including up to $13,900,000 for Mr. Notebaert, up
to $3,700,000 for Mr. Shaffer,  up to $3,300,000 for Mr. Allen, up to $3,400,000
for Mr.  Campbell  and up to  $2,700,000  for Mr.  Richards,  and  approximately
$135,500,000  for the other  covered  employees  under the Severance  Plan.  All
payments  under such  plans and  agreements  may be reduced to the extent  they,
together with certain other payments,  may result in the loss of a tax deduction
to Ameritech under certain provisions of the Code.

    Other Compensation and Benefit Plans

    The  Ameritech  Management  Committee  Short-Term  Incentive  Plan  and  the
Ameritech Senior Management Short-Term Incentive Plan (the "Short-Term Incentive
Plans") provide that upon a change in control,  each participant will receive as
soon as practicable  following the earlier of such employee's  termination or at
the end of the calendar  year in which the change in control  occurs,  a payment
equal to not less than 100% of the target  award for such  participant  for that
year  established  by the  Compensation  Committee of the  Ameritech  Board.  In
addition,  upon a change in control benefits of all  participants  under certain
nonqualified pension plans will become fully vested and compensation  previously
deferred  at the  election  of the  employee  will be paid in a lump sum  unless
otherwise  elected by the employee.  The Ameritech  Board has concluded that the
consummation  of Merger will constitute a change in control under the Short-Term
Incentive Plans and the  nonqualified  pension plans.  The Short-Term  Incentive
Plans cover approximately 35 employees, including all executive officers.

    Performance and Retention Bonus

    On May 10, 1998, the Ameritech Board approved the grant to Mr.  Notebaert of
a  retention  and  performance  bonus of $2.5  million,  as  recommended  by the
Compensation  Committee,  payable  on the  earlier  of  the  Effective  Time  or
September 1, 1999.

    Agreements for Services

    On May 10, 1998, SBC entered into an agreement for services (the "Agreements
for Services")  with each of Messrs.  Notebaert,  Shaffer,  Allen,  Campbell and
Richards,  and the three other members of the Management Committee of Ameritech.
The Agreements for Services  provide that each such officer of Ameritech will be
employed  by  SBC  or a  subsidiary  of  SBC  for a  period  of up to 30  months
commencing at the Effective  Time. The Agreements for Services also provide that
the  executive  officer may cease to be a full-time  employee of  Ameritech  and
become a consultant to SBC any time after six months from the Effective  Time at
the officer's or SBC's election.  The Agreements for Services  acknowledge  that
termina tion of the executive officer's status as a full-time employee under the
Agreements for Services would constitute an involuntary termination for purposes
of the Change in Control Agreements. The annual compensation as an employee or a
consultant  of the Named  Executive  Officers  pursuant  to the  Agreements  for
Services is as follows: Mr. Notebaert  $7,000,000,  Mr. Shaffer $2,300,000,  Mr.
Allen  $2,000,000,  Mr.  Campbell  $1,800,000 and Mr. Richards  $1,600,000,  and
$3,400,000 for the other three members of the Management  Committee of Ameritech

                                       54
<PAGE>
as a group.  The  Agreements for Services also provide that, in addition to this
compensation,  Mr.  Notebaert  will  receive  a bonus  for the year in which the
Merger  is  consummated  in an  amount  equal to  $1,331,000  multiplied  by the
percentage  by which the bonus  paid to the Chief  Executive  Officer of SBC for
such year  exceeds his base  salary,  and Mr.  Shaffer will be treated as having
fully  earned his  pension  supplements  pursuant  to his  supplemental  pension
arrangement  entered into with  Ameritech in 1995,  and will qualify for certain
post-retirement  benefits.  All payments under the Agreements for Services cease
if SBC  terminates the  employment or consulting  relationship  of the executive
officer in the event the executive  officer  becomes an employee or director of,
or performs  services for, a  substantial  competitor of SBC during the term. In
addition,  each  Agreement for Services  prohibits the executive  officer for 36
months after the Effective Time from  soliciting  customers of SBC or attempting
to induce  any  employee  or agent to cease  his  relationship  with  SBC.  Upon
termination of employment,  unless the non-competition  clause is violated,  the
Agreements  for  Services  provide that each  executive  officer  shall  receive
financial consulting  assistance for a period of five years under SBC's standard
policies for retiring executives,  and, in addition,  Mr. Notebaert will receive
office space and secretarial support.


                              ACCOUNTING TREATMENT

    Based on the advice of their respective independent public accountants,  SBC
and Ameritech believe that the Merger will qualify as a pooling-of-interests for
accounting and financial  reporting  purposes.  Under this method of accounting,
SBC will  retroactively  restate its  consolidated  financial  statements at the
Effective  Time to include  the  assets,  liabilities,  shareowners'  equity and
results of operations of Ameritech. Consummation of the Merger is conditioned on
receipt by SBC and Ameritech of letters from their respective independent public
accounting  firms to the effect  that the Merger  will  qualify as a "pooling of
interests"  for  accounting  purposes.  See "The Merger -- Conditions"  and "The
Merger -- Pooling of Interests."

              CERTAIN FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER

    The following summary discusses the material federal income tax consequences
of the  Merger.  The  summary  is  based  upon  the  Code,  applicable  Treasury
Regulations  thereunder and administrative  rulings and judicial authority as of
the  date  hereof  (collectively,   "Currently  Applicable  Law"),  and  certain
representations  as to factual  matters made or to be made by Ameritech  and SBC
(such representations,  the "Factual Representations").  Any change in Currently
Applicable Law, which may or may not have retroactive  effect, or failure of the
Factual  Representations  to be  true,  correct  and  complete  in all  material
respects,  could  affect  the  continuing  validity  of  this  discussion.  This
discussion  assumes that  holders of shares of Ameritech  Common Stock hold such
shares as a capital  asset  within  the  meaning  of  Section  1221 of the Code.
Further,  the discussion  does not address the federal  income tax  consequences
that may be relevant to a  particular  shareowner  subject to special  treatment
under certain  federal income tax laws, such as dealers in securities or foreign
currencies,  banks,  trusts,  insurance  companies,   tax-exempt  organizations,
persons that hold Ameritech Common Stock as part of a straddle,  a hedge against
currency risk or a  constructive  sale or conversion  transaction,  persons that
have a functional currency other than the U.S. dollar, investors in pass-through
entities,   non-United  States  persons,  shareowners  who  acquired  shares  of
Ameritech  Common  Stock  through  the  exercise  of  options  or  otherwise  as
compensation or through a tax-qualified  retirement plan, and holders of options
and  performance  share units  granted under  Ameritech's  benefit  plans.  This
discussion  does not  address  any  consequences  arising  under the laws of any
state, locality or foreign jurisdiction.

    Neither  Ameritech nor SBC has requested a ruling from the Internal  Revenue
Service ("IRS") with regard to any of the federal income tax consequences of the
Merger and the discussion below as to such federal income tax consequences  will
not be binding on the IRS. As a result,  there can be no assurance  that the IRS
will not disagree  with or  challenge  any of the  conclusions  set forth in the
discussion.

GENERAL

    As of the date  hereof,  it is intended  that the Merger will  constitute  a
reorganization  pursuant  to  Section  368(a)  of the Code and that for  federal
income tax  purposes no gain or loss will be  recognized  by SBC,  Ameritech  or
Merger  Sub.  The  obligations  of SBC and  Merger  Sub,  on the one  hand,  and
Ameritech,  on the  other  hand,  to  consummate  the  Merger  are  respectively
conditioned  on (i) the  receipt by SBC of an opinion  of  Sullivan &  Cromwell,
dated as of the Closing  Date, to the effect that the Merger will be treated for
federal  income tax purposes as a  reorganization  within the meaning of Section
368(a) of the Code,  and that each of SBC,  Ameritech  and  Merger Sub will be a
party to the  reorganization  within the meaning of Section  368(b) of the Code,
and (ii) the receipt by Ameritech of an opinion of Skadden, Arps, Slate, Meagher
& Flom  (Illinois),  dated as of the Closing Date, to the effect that the Merger
will be treated for federal income tax purposes as a  reorganization  within the
meaning  of  Section  368(a) of the Code,  and that each of SBC,  Ameritech  and
Merger Sub will be a party to the  reorganization  within the meaning of Section
368(b) of the Code.  Such opinions will be based upon,  among other things,  (i)
factual  representations  reasonably  satisfactory in form and substance to each
counsel dated as of the Closing Date and (ii) certain assumptions, including the
assumption  that the Merger will be consummated in accordance  with the terms of
the Merger Agreement.

                                       55
<PAGE>


    Assuming  the  Merger is  consummated  in  accordance  with the terms of the
Merger Agreement and as described in this Joint Proxy Statement/Prospectus,  and
based upon Currently Applicable Law and the Factual Representations,  the Merger
will be treated as a  "reorganization"  within the meaning of Section  368(a) of
the  Code,  and  Ameritech,  SBC and  Merger  Sub will each be  parties  to that
"reorganization"  within the meaning of Section 368(b) of the Code. As a result,
(i) no gain or loss will be recognized by holders of Ameritech Common Stock with
respect thereto as a result of the surrender of all of their shares of Ameritech
Common Stock in exchange for shares of SBC Common Stock  (including  the receipt
of SBC Rights) pursuant to the Merger (except as discussed below with respect to
cash received in lieu of  fractional  shares),  (ii) the aggregate  adjusted tax
basis of the shares of SBC Common Stock received by holders of Ameritech  Common
Stock who  exchange  all of their  Ameritech  Common Stock solely for SBC Common
Stock  pursuant  to the  Merger  Agreement  will be the  same  as the  aggregate
adjusted  tax basis of the  shares of  Ameritech  Common  Stock  surrendered  in
exchange  therefor in the Merger  Agreement  (reduced by any amount of tax basis
allocable to a fractional  share  interest in SBC Common Stock for which cash is
received),  (iii) the  holding  period in the Merger  will  include  the holding
period of shares of Ameritech  Common Stock  surrendered  in exchange  therefor,
(iv) no gain or loss will be  recognized  by holders  of SBC  Common  Stock as a
result of the Merger, and (v) in general,  no gain or loss will be recognized by
Ameritech, SBC or Merger Sub as a result of the Merger.

FRACTIONAL SHARES

    If a holder of shares of Ameritech  Common Stock  receives cash in lieu of a
fractional  share  interest in SBC Common Stock in the Merger,  such  fractional
share  interest will be treated as having been  distributed  to the holder,  and
such cash amount will be treated as received  in  redemption  of the  fractional
share  interest.  Under  Section  302 of the Code,  if such  redemption  is "not
essentially  equivalent to a dividend"  after giving effect to the  constructive
ownership rules of the Code, the holder of Ameritech Common Stock will generally
recognize  capital  gain or loss  equal  to the  cash  amount  received  for the
fractional  share of SBC Common  Stock  reduced by the  portion of the  holder's
adjusted  tax basis in shares of  Ameritech  Common  Stock  surrendered  that is
allocable to the  fractional  share  interest in SBC Common  Stock.  Under these
rules, a minority  shareowner of Ameritech  should generally  recognize  capital
gain or loss on the receipt of cash in lieu of a  fractional  share  interest in
SBC Common  Stock.  The capital  gain or loss will be long term  capital gain or
loss if the holder's  holding  period in the  fractional  share interest is more
than  one  year.  Under  recently  enacted  legislation,  long-term  gain  of an
individual  holder is subject to a maximum tax rate of 28% in respect of capital
assets  held for more than one  year.  The  maximum  rate for an  individual  is
reduced to 20% in respect of capital assets held for more than 18 months.

    THE  PRECEDING  DISCUSSION  DOES NOT  PURPORT TO BE A COMPLETE  ANALYSIS  OR
DISCUSSION OF ALL POTENTIAL TAX EFFECTS RELEVANT TO THE MERGER.  THUS, AMERITECH
SHAREOWNERS  ARE URGED TO CONSULT  THEIR OWN TAX ADVISORS AS TO THE SPECIFIC TAX
CONSEQUENCES TO THEM OF THE MERGER, INCLUDING TAX RETURN REPORTING REQUIREMENTS,
THE APPLICABILITY AND EFFECT OF FEDERAL,  STATE, LOCAL, AND OTHER APPLICABLE TAX
LAWS AND THE EFFECT OF ANY PROPOSED CHANGES IN THE TAX LAWS.

                               THE BYLAW AMENDMENT

    The SBC Board has  unanimously  approved the Bylaw  Amendment and recommends
that the  shareowners of SBC vote for the Bylaw  Amendment.  The Bylaw Amendment
would amend the second  paragraph of Article II, Section 1, of the SBC Bylaws to
provide  that the maximum  number of persons  that may serve as directors on the
SBC Board be increased to 25 from 21.

    The SBC Board  desires  to cause the  adoption  of the  Bylaw  Amendment  to
facilitate  the  transactions  contemplated  by the  Merger  Agreement.  SBC has
agreed,  pursuant to the Merger  Agreement,  that as of the Effective Time up to
five members of the Ameritech  Board will become  members of the SBC Board.  The
SBC Board is  currently  composed  of 19  members.  If the SNET  acquisition  is
completed,  pursuant to the SNET Merger Agreement (as defined herein),  SBC will
be obligated to cause a person  designated by SNET to become a member of the SBC
Board. Therefore,  following the SNET acquisition, the SBC Board may be composed
of up to 20 members. The SBC Bylaws currently provide that the maximum number of
persons who may be members of the SBC Board is 21.  Therefore,  at the Effective
Time, it may be necessary for the maximum number of persons who may serve on the
SBC Board to be  increased  to permit the  election of members of the  Ameritech
Board to the SBC Board. The SBC Board is therefore proposing the Bylaw Amendment
to serve  to  ensure  that up to five  members  of the  Ameritech  Board  may be
appointed to the SBC Board as of the Effective Time. There can,  however,  be no
assurance that the Bylaw Amendment will be



                                       56

<PAGE>



necessary at the Effective  Time as certain  directors of SBC may cease to serve
as members of the SBC Board prior to the Effective Time, in which case there may
be sufficient vacancies to permit the election of the Ameritech designees.

    The  approval of the Bylaw  Amendment  requires the  affirmative  vote of at
least  two-thirds of the shares of SBC Common Stock issued and outstanding as of
the SBC Record Date. Abstentions and failures to vote shares of SBC Common Stock
will have the effect of a vote against the approval of the Bylaw Amendment.

    THE SBC BOARD HAS  UNANIMOUSLY  APPROVED THE BYLAW AMENDMENT  AND DETERMINED
THAT IT IS ADVISABLE AND RECOMMENDS  THAT SBC  SHAREOWNERS  VOTE FOR APPROVAL OF
THE BYLAW AMENDMENT.

                           THE SHARE INCREASE PROPOSAL

    The SBC Board has  unanimously  approved  the Share  Increase  Proposal  and
determined that it is advisable. The Share Increase Proposal would amend the SBC
Restated  Certificate to increase the number of authorized  shares of SBC Common
Stock from 7.0 billion shares to 10.0 billion shares.

    The first paragraph of Article Five of the SBC Restated Certificate would be
amended to read as follows:

                                  ARTICLE FIVE

            The aggregate  number of shares which the  corporation  is
         authorized to issue is 10,010,000,000  shares,  consisting of
         10,000,000,000  common  shares  having a par  value of $1 per
         share and 10,000,000  preferred  shares having a par value of
         $1 per share.

    The Share  Increase  Proposal is not  required  for SBC to have a sufficient
number of shares of SBC Common Stock  authorized to issue shares pursuant to the
Merger  Agreement.  The SBC Board  believes,  however,  that the Share  Increase
Proposal is necessary to maintain the same type of  flexibility  SBC sought when
it increased the number of  authorized  shares of SBC Common Stock at the annual
meeting of shareowners of SBC in 1998.

    At the  time  of  SBC's  divestiture  from  AT&T  Corp.  in  1984,  SBC  had
approximately  97  million  shares  of  common  stock  outstanding,  out  of  an
authorized  350 million  shares.  In 1987 and 1993,  respectively,  SBC declared
3-for-1  and  2-for-1  stock  splits  (each  effected  in the  form  of a  stock
dividend).  In 1988 and 1996,  respectively,  the  shareowners  of SBC  approved
increases in the  authorized  shares of SBC Common Stock,  first to 1.1 billion,
then to 2.2 billion. Following these increases, SBC issued 300 million shares of
SBC Common Stock in connection  with the acquisition of Pacific Telesis Group in
1997,  raising  the  number  of  outstanding  shares  of  SBC  Common  Stock  to
approximately 919 million.

    Earlier this year,  SBC effected the SBC Stock Split.  As a result there are
approximately 1.84 billion shares of SBC Common Stock outstanding. At the annual
meeting of  shareowners  of SBC in 1998 the  authorized  number of shares of SBC
Common Stock was increased to 7.0 billion.  SBC expects that it will be required
to issue  approximately  1.45 billion shares of SBC Common Stock pursuant to the
Merger  Agreement  and  approximately  120  million  shares of SBC Common  Stock
pursuant to the SNET Merger  Agreement.  These  issuances  would bring the total
number of shares of SBC Common Stock outstanding up to approximately 3.4 billion
out of an authorized  7.0 billion.  Although a further  two-for-one  stock split
would not be  impossible,  doing so would leave SBC with little  flexibility  to
issue additional shares of SBC Common Stock.

    Therefore,  in order to have sufficient number of shares of SBC Common Stock
available for issuance in connection with subsequent stock splits, acquisitions,
financings,  compensation and benefit plans and other proper corporate purposes,
the SBC Board  recommends  increasing  the  number of  authorized  shares of SBC
Common  Stock.  SBC  has no  specific  plans  at  this  time  for the use of the
additional SBC Common Stock,  other than in the Merger and the SNET acquisition.
Having such additional  authorized  shares  available for issuance in the future
would give SBC  greater  flexibility  and would  allow such  shares to be issued
without the expense and delay of a special shareowners'  meeting. The additional
shares of SBC Common  Stock would be identical to the shares of SBC Common Stock
now  authorized.  Holders of shares of SBC Common  Stock do not have  preemptive
rights  to  subscribe  to  additional  securities  which  may be  issued by SBC.
Although  the SBC Board has no present  intention  of doing so,  the  additional
shares of SBC Common  Stock could be used to make it more  difficult to effect a
change in control of SBC. SBC has other



                                       57

<PAGE>



defenses  available  against  coercive or unfair acts of third  parties that are
designed to effect a change in control of SBC. Presently, the SBC Board knows of
no such attempt to obtain control of SBC.

    The approval of the Share Increase Proposal requires the affirmative vote of
at least a majority of the shares of SBC Common Stock issued and  outstanding as
of the SBC Record  Date.  Abstentions  and failures to vote shares of SBC Common
Stock will have the effect of a vote against the approval of the Share  Increase
Proposal.

    THE SBC BOARD HAS  UNANIMOUSLY  APPROVED  THE SHARE  INCREASE  PROPOSAL  AND
DETERMINED  THAT IT IS ADVISABLE AND RECOMMENDS  THAT SBC  SHAREOWNERS  VOTE FOR
ADOPTION OF THE SHARE INCREASE PROPOSAL.



                                       58

<PAGE>



                          UNAUDITED PRO FORMA COMBINED
                         CONDENSED FINANCIAL STATEMENTS

    The following  unaudited pro forma combined condensed  financial  statements
and notes  thereto  are  presented  assuming  the  Merger and the  pending  SNET
acquisition  will each be  accounted  for as a  "pooling  of  interests."  For a
description of pooling of interests  accounting with respect to the Merger,  see
"The Merger--Accounting Treatment."

    The following  unaudited pro forma combined condensed  financial  statements
have been  prepared  using the Exchange  Ratio.  See "The  Merger--Terms  of the
Merger."

    The unaudited pro forma combined  condensed  income  statements  reflect the
combination of the historical  operating results of SBC and Ameritech,  and SBC,
Ameritech and SNET for the years ended December 31, 1997,  1996 and 1995 and for
the three  months  ended  March  31,  1998.  The  unaudited  pro forma  combined
condensed  balance  sheets reflect the  combination  of the  historical  balance
sheets of SBC and Ameritech and SBC, Ameritech and SNET at December 31, 1997 and
at March 31, 1998.

    The unaudited pro forma  combined  condensed  financial  statements  are not
necessarily  indicative of the results of operations or financial  position that
actually  would  have  occurred  had the Merger  and the SNET  acquisition  been
consummated on the dates indicated or that may be obtained in the future.  These
unaudited pro forma combined  condensed  financial  statements should be read in
conjunction with the related historical  financial  statements and notes thereto
of SBC,  Ameritech  and SNET  incorporated  by  reference  in this  Joint  Proxy
Statement/Prospectus.


























                                       59

<PAGE>

<TABLE>
<CAPTION>
                                          SBC COMMUNICATIONS INC. AND AMERITECH CORPORATION
                                        UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET
                                                        AS OF MARCH 31, 1998

                                                                                                                        SBC/
                                                                              SBC/                                   AMERITECH/
                                        HISTORICAL                         AMERITECH     HISTORICAL                     SNET
                                        ----------           PRO FORMA     PRO FORMA     ----------    PRO FORMA     PRO FORMA
                                      SBC      AMERITECH    ADJUSTMENTS    COMBINED        SNET       ADJUSTMENTS     COMBINED
                                  ----------  -----------   -----------    ---------     ----------   -----------    ----------
                                                                        (IN MILLIONS)
<S>                               <C>         <C>           <C>            <C>           <C>          <C>           <C>
ASSETS

CURRENT ASSETS

Cash and cash equivalents         $     674   $     148                    $     822     $     14                   $     836

Accounts receivable-net               4,730       2,962                        7,692          364                       8,056

Other current assets                  1,565         856                        2,421          108                       2,529
- ------------------------------------------------------------------------------------------------------------------------------------
Total current assets                  6,969       3,966                       10,935          486                      11,421
- ------------------------------------------------------------------------------------------------------------------------------------
PROPERTY, PLANT AND EQUIPMENT-NET    27,380      13,900                       41,280        1,741                      43,021
- ------------------------------------------------------------------------------------------------------------------------------------
INTANGIBLE ASSETS-NET                 3,238       1,867                        5,105          389                       5,494
- ------------------------------------------------------------------------------------------------------------------------------------
INVESTMENTS IN EQUITY AFFILIATES      2,581       4,685                        7,266           --                       7,266
- ------------------------------------------------------------------------------------------------------------------------------------
OTHER ASSETS                          1,946       3,535                        5,481          199                       5,680
- ------------------------------------------------------------------------------------------------------------------------------------
TOTAL ASSETS                        $42,114     $27,953                      $70,067       $2,815                     $72,882
- ------------------------------------------------------------------------------------------------------------------------------------
LIABILITIES AND SHAREOWNERS' EQUITY
CURRENT LIABILITIES

Debt maturing within one year      $  2,661    $  2,893                    $   5,554      $   164                    $  5,718

Other current liabilities             7,171       4,393                       11,564          457                      12,021
- ------------------------------------------------------------------------------------------------------------------------------------
Total current liabilities             9,832       7,286                       17,118          621                      17,739
- ------------------------------------------------------------------------------------------------------------------------------------
LONG-TERM DEBT                       11,758       7,019                       18,777        1,146                      19,923
- ------------------------------------------------------------------------------------------------------------------------------------
POSTEMPLOYMENT BENEFIT OBLIGATION     4,820       3,126                        7,946          260                       8,206
- ------------------------------------------------------------------------------------------------------------------------------------
OTHER NONCURRENT LIABILITIES          4,275       1,995                        6,270           95                       6,365
- ------------------------------------------------------------------------------------------------------------------------------------
CORPORATION-OBLIGATED MANDATORILY
   REDEEMABLE PREFERRED SECURITIES
   OF SUBSIDIARY TRUSTS*              1,000          --                        1,000           --                       1,000
- ------------------------------------------------------------------------------------------------------------------------------------
SHAREOWNERS'  EQUITY

Common shares                         1,867       1,177    $  270   2a         3,314           70     $     49  2b      3,433

Capital in excess of par value        8,489       5,411    (1,919)  2a        11,981          672         (134) 2b     12,519

Retained earnings                     1,629       4,352                        5,981           69                       6,050

Guaranteed obligations of ESOPs       (147)       (113)                        (260)          (33)                      (293)

Deferred compensation - LESOP         (119)          --                        (119)           --                       (119)

Foreign currency translation 
  adjustment                          (582)       (651)                      (1,233)           --                     (1,233)

Treasury shares (at cost)             (708)     (1,649)      1,649  2a         (708)         (85)           85  2b      (708)
- ------------------------------------------------------------------------------------------------------------------------------------
Total shareowners' equity            10,429       8,527             --        18,956          693            --        19,649
- ------------------------------------------------------------------------------------------------------------------------------------
TOTAL LIABILITIES AND SHAREOWNERS'
   EQUITY                           $42,114     $27,953      $ --            $70,067       $2,815     $      --       $72,882

<FN>
* The trusts contain assets of $1,030 in principal amount of the Subordinated Debentures of Pacific Telesis Group.

The accompanying notes are an integral part of these unaudited pro forma combined condensed financial statements.
</FN>
</TABLE>

                                                        60
<PAGE>
<TABLE>
<CAPTION>
                                          SBC COMMUNICATIONS INC. AND AMERITECH CORPORATION
                                        UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET
                                                         AS OF DECEMBER 31, 1997
                                                                                                                            SBC/
                                                                                 SBC/                                    AMERITECH/
                                            HISTORICAL                         AMERITECH     HISTORICAL                     SNET
                                            ----------           PRO FORMA     PRO FORMA     ----------    PRO FORMA     PRO FORMA
                                          SBC      AMERITECH    ADJUSTMENTS    COMBINED        SNET       ADJUSTMENTS     COMBINED
                                      ----------  -----------   -----------    ---------     ----------   -----------    ----------
                                                                            (IN MILLIONS)
<S>                                   <C>         <C>           <C>            <C>           <C>          <C>           <C>
ASSETS

CURRENT ASSETS

Cash and cash  equivalents            $    398     $    239                    $     637      $     12                   $    649

Accounts receivable - net                5,015        3,078                        8,093           328                      8,421

Other current assets                     1,649        1,232                        2,881           115                      2,996
- ------------------------------------------------------------------------------------------------------------------------------------
Total current assets                     7,062        4,549                       11,611           455                     12,066
- ------------------------------------------------------------------------------------------------------------------------------------
PROPERTY, PLANT AND EQUIPMENT - NET     27,339       13,873                       41,212         1,717                     42,929
- ------------------------------------------------------------------------------------------------------------------------------------
INTANGIBLE ASSETS -  NET                 3,269        1,882                        5,151           395                      5,546
- ------------------------------------------------------------------------------------------------------------------------------------
INVESTMENTS IN EQUITY AFFILIATES         2,740        1,685                        4,425            --                      4,425
- ------------------------------------------------------------------------------------------------------------------------------------
OTHER ASSETS                             1,722        3,350                        5,072           204                      5,276
- ------------------------------------------------------------------------------------------------------------------------------------
TOTAL ASSETS                          $ 42,132     $ 25,339                    $  67,471      $  2,771                   $ 70,242
- ------------------------------------------------------------------------------------------------------------------------------------

LIABILITIES AND SHAREOWNERS' EQUITY

CURRENT LIABILITIES

Debt maturing within one year         $  1,953     $  3,036                    $  4,989       $    186                   $  5,175

Other current liabilities                8,299        4,205                      12,504            472                     12,976
- ------------------------------------------------------------------------------------------------------------------------------------
Total current liabilities               10,252        7,241                      17,493            658                     18,151
- ------------------------------------------------------------------------------------------------------------------------------------
LONG-TERM DEBT                          12,019        4,610                      16,629          1,157                     17,786
- ------------------------------------------------------------------------------------------------------------------------------------
POSTEMPLOYMENT BENEFIT OBLIGATION        4,929        3,127                       8,056            267                      8,323
- ------------------------------------------------------------------------------------------------------------------------------------
OTHER  NONCURRENT LIABILITIES            4,040        2,053                       6,093             92                      6,185
- ------------------------------------------------------------------------------------------------------------------------------------


CORPORATION-OBLIGATED MANDATORILY
   REDEEMABLE PREFERRED SECURITIES OF
   SUBSIDIARY TRUSTS*                   1,000          --                         1,000             --                      1,000
- ------------------------------------------------------------------------------------------------------------------------------------


SHAREOWNERS' EQUITY

Common shares                             934         1,177     $   (455) 2a      1,656            69     $    (10) 2b      1,715

Capital in excess of par value          9,418         5,313       (1,190) 2a     13,541           622          (75) 2b     14,088

Retained earnings                       1,146         4,190                       5,336            27                       5,363

Guaranteed obligations of  ESOPs         (183)         (190)                       (373)          (36)                       (409)

Deferred compensation - LESOP            (119)           --                        (119)           --                        (119)

Foreign currency translation  adjustment (574)         (537)                     (1,111)           --                      (1,111)

Treasury shares (at cost)                (730)       (1,645)       1,645  2a       (730)          (85)          85  2b       (730)
- ------------------------------------------------------------------------------------------------------------------------------------
Total shareowners' equity               9,892         8,308         --           18,200           597           --         18,797
- ------------------------------------------------------------------------------------------------------------------------------------
TOTAL LIABILITIES AND 
     SHAREOWNERS' EQUITY             $ 42,132      $ 25,339     $   --         $ 67,471     $   2,771     $     --        $70,242
====================================================================================================================================
<FN>
* The trusts contain assets of $1,030 in principal amount of the Subordinated Debentures of Pacific Telesis Group.

The accompanying notes are an integral part of these unaudited pro forma combined condensed financial statements.
</FN>
</TABLE>
                                                        61
<PAGE>



<TABLE>
<CAPTION>
                                 SBC COMMUNICATIONS INC. AND AMERITECH CORPORATION
                            UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF INCOME
                                     FOR THE THREE MONTHS ENDED MARCH 31, 1998


                                                                                                                            SBC/
                                                                                 SBC/                                    AMERITECH/
                                            HISTORICAL                         AMERITECH     HISTORICAL                     SNET
                                            ----------           PRO FORMA     PRO FORMA     ----------    PRO FORMA     PRO FORMA
                                          SBC      AMERITECH    ADJUSTMENTS    COMBINED        SNET       ADJUSTMENTS     COMBINED
                                      ----------  -----------   -----------    ---------     ----------   -----------    ----------
                                                                 (IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                                   <C>         <C>           <C>            <C>           <C>          <C>           <C>

Total operating revenues              $   6,424   $    4,133                   $ 10,557       $   527                   $  11,084

Total operating expenses                  4,765        3,228                      7,993           413                       8,406
- ------------------------------------------------------------------------------------------------------------------------------------
OPERATING INCOME                          1,659          905                      2,564           114                       2,678

Interest expense                           (233)        (175)                      (408)          (23)                       (431)

Equity in net income of affiliates           53           99                        152            --                         152

Other income (expense) - net                (38)         (48)                       (86)          (1)                         (87)
- ------------------------------------------------------------------------------------------------------------------------------------
INCOME BEFORE INCOME TAX AND
   CUMULATIVE EFFECT OF
   ACCOUNTING CHANGE                      1,441          781                      2,222           90                        2,312

Income taxes                                529          289                        818           34                          852
- ------------------------------------------------------------------------------------------------------------------------------------
INCOME BEFORE CUMULATIVE EFFECT OF
   ACCOUNTING CHANGE                        912          492                      1,404           56                        1,460

Cumulative Effect of Accounting
   Change, net of tax                        --           --                         --           16                           16
- ------------------------------------------------------------------------------------------------------------------------------------
   NET INCOME                         $     912   $      492                   $  1,404       $   72                     $  1,476
- ------------------------------------------------------------------------------------------------------------------------------------
EARNINGS PER COMMON SHARE-
   BASIC:(2C)

INCOME BEFORE CUMULATIVE EFFECT OF     
   ACCOUNTING CHANGE                   $   0.50   $     0.45                       0.43         0.84                         0.43

NET INCOME                             $   0.50   $     0.45                   $   0.43       $ 1.07                      $  0.43

WEIGHTED AVERAGE NUMBER OF
   COMMON SHARES OUTSTANDING              1,839        1,100            348       3,287           67          51            3,405
- ------------------------------------------------------------------------------------------------------------------------------------
EARNINGS PER COMMON
   SHARE-ASSUMING DILUTION:(2C)

INCOME BEFORE CUMULATIVE EFFECT OF     
   ACCOUNTING CHANGE                   $   0.49   $     0.44                   $   0.42       $ 0.83                       $ 0.42

NET INCOME                             $   0.49   $     0.44                   $   0.42       $ 1.06                       $ 0.43

WEIGHTED AVERAGE NUMBER OF
   COMMON SHARES OUTSTANDING              1,864        1,109            350       3,323           68          51            3,442


<FN>
The accompanying notes are an integral part of these unaudited pro forma combined condensed financial statements.
</FN>
</TABLE>





                                                        62

<PAGE>


<TABLE>
<CAPTION>
                                 SBC COMMUNICATIONS INC. AND AMERITECH CORPORATION
                            UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF INCOME
                                       FOR THE YEAR ENDED DECEMBER 31, 1997


                                                                                                                            SBC/
                                                                                 SBC/                                    AMERITECH/
                                            HISTORICAL                         AMERITECH     HISTORICAL                     SNET
                                            ----------           PRO FORMA     PRO FORMA     ----------    PRO FORMA     PRO FORMA
                                          SBC      AMERITECH    ADJUSTMENTS    COMBINED        SNET       ADJUSTMENTS     COMBINED
                                      ----------  -----------   -----------    ---------     ----------   -----------    ----------
                                                                 (IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                                   <C>         <C>           <C>            <C>           <C>          <C>           <C>

Total operating revenues               $ 24,856    $   15,998                  $ 40,854       $    2,022                 $ 42,876

Total operating expenses                 21,686        12,199                    33,885            1,624                   35,509
- ------------------------------------------------------------------------------------------------------------------------------------
OPERATING INCOME                          3,170         3,799                     6,969              398                   7,367

Interest expense                           (947)         (505)                   (1,452)             (90)  $   (6) 2d     (1,548)

Equity in net income of affiliates          201           206                       407               --                     407

Other income (expense) - net                (87)          184                        97                8                     105
- ------------------------------------------------------------------------------------------------------------------------------------
INCOME BEFORE INCOME TAX AND                                                                                         
   EXTRAORDINARY LOSS                     2,337         3,684                     6,021              316       (6) 2d      6,331

Income taxes                                863         1,388                     2,251              118       (2) 2d      2,367
- ------------------------------------------------------------------------------------------------------------------------------------
INCOME BEFORE EXTRAORDINARY LOSS          1,474         2,296                     3,770              198       (4) 2d      3,964

Extraordinary Loss, net of tax              --             --                        --               (4)       4  2d        --
- ------------------------------------------------------------------------------------------------------------------------------------
   NET INCOME                          $  1,474    $    2,296                  $  3,770       $      194   $    --       $ 3,964
- ------------------------------------------------------------------------------------------------------------------------------------
EARNINGS PER COMMON SHARE-
   BASIC:(2C)

INCOME BEFORE EXTRAORDINARY LOSS       $   0.81    $     2.09                  $   1.15       $     2.99                 $  1.17

NET INCOME                             $   0.81    $     2.09                  $   1.15       $     2.93                 $  1.17

WEIGHTED AVERAGE NUMBER OF
   COMMON SHARES OUTSTANDING              1,828         1,099          347        3,274               66       50          3,390
- ------------------------------------------------------------------------------------------------------------------------------------
EARNINGS PER COMMON
   SHARE-ASSUMING DILUTION:(2c)

INCOME BEFORE EXTRAORDINARY LOSS       $   0.80    $     2.08                  $   1.14       $     2.98                 $  1.16

NET INCOME                             $   0.80    $     2.08                  $   1.14       $     2.92                 $  1.16

WEIGHTED AVERAGE NUMBER OF
  COMMON SHARES OUTSTANDING               1,845         1,104          349        3,298               66         50        3,414
- ------------------------------------------------------------------------------------------------------------------------------------

<FN>
The accompanying notes are an integral part of these unaudited pro forma combined condensed financial statements.
</FN>
</TABLE>






                                                        63

<PAGE>


<TABLE>
<CAPTION>
                                 SBC COMMUNICATIONS INC. AND AMERITECH CORPORATION
                            UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF INCOME
                                       FOR THE YEAR ENDED DECEMBER 31, 1996
                                                                                                                            SBC/
                                                                                  SBC/                                   AMERITECH/
                                            HISTORICAL                         AMERITECH     HISTORICAL                     SNET
                                            ----------           PRO FORMA     PRO FORMA     ----------    PRO FORMA     PRO FORMA
                                          SBC      AMERITECH    ADJUSTMENTS    COMBINED        SNET       ADJUSTMENTS     COMBINED
                                      ----------  -----------   -----------    ---------     ----------   -----------    ----------
                                                                 (IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                                   <C>         <C>           <C>            <C>           <C>          <C>           <C>

Total operating revenues               $ 23,445    $ 14,917                    $ 38,362       $  1,942                   $40,304

Total operating expenses                 17,609      11,412                      29,021          1,560                    30,581
- ------------------------------------------------------------------------------------------------------------------------------------
OPERATING INCOME                          5,836       3,505                       9,341            382                     9,723
Interest expense                           (812)       (514)                     (1,326)           (89)                   (1,415)
Equity in net income of affiliates          207         236                         443             --                       443
Other income (expense) - net                (82)         90                           8              7                        15
- ------------------------------------------------------------------------------------------------------------------------------------
INCOME BEFORE INCOME TAXES AND
   CUMULATIVE EFFECT OF ACCOUNTING
   CHANGE                                 5,149       3,317                       8,466            300                     8,766
Income taxes                              1,960       1,183                       3,143            107                     3,250
- ------------------------------------------------------------------------------------------------------------------------------------
INCOME BEFORE CUMULATIVE EFFECT OF
   ACCOUNTING CHANGE                      3,189       2,134                       5,323            193                     5,516
Cumulative Effect of Accounting Change
   net of tax                                90         --                           90             --                        90
- ------------------------------------------------------------------------------------------------------------------------------------
   NET INCOME                          $  3,279    $  2,134                   $  5,413       $    193                    $5,606
- ------------------------------------------------------------------------------------------------------------------------------------
EARNINGS PER COMMON SHARE-BASIC:(2c)

INCOME BEFORE CUMULATIVE EFFECT
   OF ACCOUNTING CHANGE                $   1.73    $   1.93                    $   1.62       $   2.95                    $ 1.62
NET INCOME                             $   1.78    $   1.93                    $   1.64       $   2.95                    $ 1.64
WEIGHTED AVERAGE NUMBER OF COMMON
   SHARES OUTSTANDING                     1,841       1,104           349         3,294             65            49       3,408
- ------------------------------------------------------------------------------------------------------------------------------------
   EARNINGS PER COMMON SHARE-
     ASSUMING DILUTION:(2c)

INCOME BEFORE CUMULATIVE EFFECT 
   OF ACCOUNTING CHANGE                $   1.72    $   1.92                    $   1.61       $   2.94                    $ 1.61
NET INCOME                             $   1.77    $   1.92                    $   1.64       $   2.94                    $ 1.64
WEIGHTED AVERAGE NUMBER OF COMMON
   SHARES OUTSTANDING                     1,851       1,108           350         3,309             66            50       3,425
- ------------------------------------------------------------------------------------------------------------------------------------

<FN>
The accompanying notes are an integral part of these unaudited pro forma combined condensed financial statements.
</FN>
</TABLE>





                                                        64

<PAGE>



<TABLE>
<CAPTION>
                                 SBC COMMUNICATIONS INC. AND AMERITECH CORPORATION
                            UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF INCOME
                                       FOR THE YEAR ENDED DECEMBER 31, 1995

                                                                                                                            SBC/
                                                                                 SBC/                                    AMERITECH/
                                            HISTORICAL                         AMERITECH     HISTORICAL                     SNET
                                            ----------           PRO FORMA     PRO FORMA     ----------    PRO FORMA     PRO FORMA
                                          SBC      AMERITECH    ADJUSTMENTS    COMBINED        SNET       ADJUSTMENTS     COMBINED
                                      ----------  -----------   -----------    ---------     ----------   -----------    ----------
                                                                 (IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                                   <C>         <C>           <C>            <C>           <C>          <C>           <C>

Total operating revenues              $21,712      $13,428                     $ 35,140       $  1,816                   $  36,956
Total operating expenses               16,592       10,125                       26,717          1,467                      28,184
- ------------------------------------------------------------------------------------------------------------------------------------
OPERATING INCOME                        5,120        3,303                        8,423            349                       8,772
Interest expense                         (957)        (469)                      (1,426)           (86)                     (1,512)
Equity in net income of affiliates        120           94                          214             --                         214
Other income (expense) - net              194          166                          360             15                         375
- ------------------------------------------------------------------------------------------------------------------------------------
INCOME BEFORE INCOME TAX AND
   EXTRAORDINARY LOSS                   4,477        3,094                        7,571            278                       7,849
Income taxes                            1,519        1,086                        2,605            109                       2,714
INCOME BEFORE EXTRAORDINARY LOSS        2,958        2,008                        4,966            169                       5,135
Extraordinary Loss, net of tax         (6,022)          --                       (6,022)          (687)                     (6,709)
- ------------------------------------------------------------------------------------------------------------------------------------
   NET INCOME (LOSS)                  $(3,064)      $2,008                     $ (1,056)      $   (518)                   $ (1,574)
- ------------------------------------------------------------------------------------------------------------------------------------
EARNINGS PER COMMON SHARE-BASIC:(2c)
INCOME BEFORE EXTRAORDINARY LOSS       $ 1.61       $ 1.81                        $1.51       $   2.60                       $1.50
NET INCOME (LOSS)                      $(1.66)      $ 1.81                     $  (0.32)      $  (7.99)                     $(0.46)
WEIGHTED AVERAGE NUMBER OF COMMON
   SHARES OUTSTANDING                   1,841        1,107         350            3,298             65             49        3,412
- ------------------------------------------------------------------------------------------------------------------------------------
EARNINGS PER COMMON SHARE-ASSUMING
   DILUTION:(2c)
 
INCOME BEFORE EXTRAORDINARY LOSS       $ 1.60       $ 1.81                     $   1.50       $   2.60                       $1.50
NET INCOME (LOSS)                      $(1.66)      $ 1.81                     $  (0.32)      $  (7.99)                     $(0.46)
WEIGHTED AVERAGE NUMBER OF COMMON
   SHARES OUTSTANDING                   1,849        1,111         351            3,311             65             49        3,425
- ------------------------------------------------------------------------------------------------------------------------------------

<FN>
The accompanying notes are an integral part of these unaudited pro forma combined condensed financial statements.
</FN>
</TABLE>





                                                        65

<PAGE>



      NOTES TO UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS

NOTE 1 - BASIS OF PRESENTATION

The accompanying  unaudited pro forma combined  condensed  financial  statements
include the historical  financial  statements of SBC, Ameritech and SNET and are
intended to reflect the impact of the Merger and the pending SNET acquisition on
SBC. On January 5, 1998,  SBC and SNET jointly  announced  the  execution of the
SNET Merger Agreement, pursuant to which SBC would acquire SNET in a transaction
in which each share of common stock,  par value $1.00 per share,  of SNET ("SNET
Common  Stock")  would be converted  into and exchanged for 1.7568 shares of SBC
Common Stock  (equivalent  to  approximately  120 million  shares,  or 6% of the
outstanding  shares of SBC Common  Stock at December 31,  1997).  After the SNET
acquisition,  SNET will be a wholly-owned  subsidiary of SBC. The transaction is
intended to be accounted  for as a "pooling of  interests"  and to be a tax-free
reorganization.  The shareholders of SNET approved the merger on March 27, 1998;
however,  the SNET acquisition is also subject to certain regulatory  approvals.
If such approvals are granted,  the  transaction is expected to close by the end
of 1998.

The accompanying unaudited pro forma combined condensed financial statements are
presented  for  illustrative  purposes  only and do not give  effect to any cost
savings which may result from the  integration of SBC's,  Ameritech's and SNET's
operations. These potential savings, as well as any potential revenue synergies,
reflect  future   opportunities,   including  the  reduction  of  expected  cost
increases,  and do not  necessarily  involve  reductions  from  historical  cost
levels.  Additionally,  the unaudited  pro forma  combined  condensed  financial
statements do not include any  transaction  costs  relating to the Merger (which
are  estimated  to be  approximately  $150  million),  nor do they  consider any
reorganization  costs  or  costs  associated  with the  disposition  of  certain
overlapping  wireless properties that may be required as a result of the Merger.
As the nature of any dispositions of overlapping wireless properties is unknown,
the accompanying  unaudited pro forma combined condensed financial statements do
not  reflect any  disposition  which may be made or  consideration  which may be
received.  Differences in accounting  policies do not have a material  effect on
either the pro forma combined  financial  position or pro forma combined results
of operations  and have not been  reflected in the unaudited pro forma  combined
condensed  financial  statements.  The  unaudited pro forma  combined  condensed
statements of income reflect the Merger and the SNET  acquisition as if each had
been in effect on January 1, 1998, 1997, 1996 and 1995, respectively.

The  unaudited  pro  forma  combined  condensed  financial  statements  are  not
necessarily  indicative of the results of operations or financial  position that
actually  would  have  occurred  had the Merger  and the SNET  acquisition  been
consummated on the dates indicated or that may be obtained in the future.  These
unaudited pro forma combined  condensed  financial  statements should be read in
conjunction with the related historical  financial  statements and notes thereto
of SBC,  Ameritech  and SNET  incorporated  by  reference  in this  Joint  Proxy
Statement/Prospectus.

SBC issued shares in connection  with the SBC Stock Split,  effected in the form
of a stock dividend, in the first quarter of 1998.  Shareowners' equity accounts
were adjusted at the time of such issuance.

Ameritech  issued shares in connection with the Ameritech Stock Split,  effected
in the form of a stock  dividend,  on December  31,  1997.  Shareowners'  equity
accounts  were  retroactively  restated as of  December  31, 1997 to reflect the
effects of the Ameritech Stock Split.

NOTE 2 - PRO FORMA ADJUSTMENTS

a.  Shareowners'  Equity - The  shareowners'  equity  accounts of Ameritech have
    been adjusted to reflect the assumed issuance of approximately 1,450 million
    shares of SBC Common Stock in exchange for all of the issued and outstanding
    Ameritech  Common Stock (based on the Exchange  Ratio of 1.316).  The actual
    number of shares of SBC  Common  Stock to be issued in  connection  with the
    Merger  will be based upon the number of shares of  Ameritech  Common  Stock
    issued and outstanding at the Effective Time.

b.  Shareowners'  Equity - The  shareowners'  equity  accounts of SNET have been
    adjusted to reflect the assumed issuance of approximately 120 million shares
    of SBC Common Stock in exchange for all of the issued and  outstanding  SNET
    Common Stock (based on the exchange ratio in the SNET  acquisition of 1.7568
    shares of SBC Common Stock for each share of SNET Common Stock).  The actual
    number of shares of SBC  Common  Stock to be issued in  connection  with the
    SNET  acquisition  will be based  upon the  number of shares of SNET  Common
    Stock  issued  and  outstanding  at the time the  SNET  acquisition  becomes
    effective.



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<PAGE>



c.  Earnings per Common  Share - Pro forma  combined  basic  earnings per common
    share and  earnings  per common  share  assuming  dilution  for each  period
    presented are based on the combined  weighted average shares  outstanding in
    each period after  conversion  of shares of Ameritech  Common Stock and SNET
    Common Stock into shares of SBC Common Stock, as appropriate.

d.  Extraordinary Loss - The extraordinary loss on early  extinguishment of debt
    is reclassified as the amount is not material to SBC and, therefore,  is not
    reported as an extraordinary item.

e.  Intercompany   Transactions   -  There  are  no   significant   intercompany
    transactions between or among SBC, Ameritech and SNET.

NOTE 3 - FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER

The unaudited pro forma combined condensed financial  statements assume that the
Merger qualifies as a tax-free reorganization for federal income tax purposes.

NOTE 4 - RECENT DEVELOPMENTS - SALE OF TELECOM CORPORATION OF 
         NEW ZEALAND LIMITED

Pursuant to a plan publicly announced in December 1997,  Ameritech completed the
sale of  substantially  all of its stake in Telecom  Corporation  of New Zealand
Limited  (New  Zealand  Telecom)  in a global  stock  offering  in  April  1998.
Ameritech  sold a total of  436,970,670  ordinary  shares  in the form of either
ordinary  shares  or  American   Depository  Shares  ("ADSs"),   with  each  ADS
representing eight ordinary shares.  Ameritech will receive payment for the sale
in two installments;  the first was received in April 1998 and the second is due
by March 31,  1999.  Payment  for  ordinary  shares  will be made in New Zealand
dollars (or in Australian  dollars for those sold in the  Australian  tranche of
the offering), while payment for ADSs will be made in U.S. dollars.

At the time of the first installment payment,  Ameritech irrevocably transferred
the  relevant  New  Zealand  Telecom  shares to a trustee,  which is holding the
shares  in  trust  for the  purchasers  until  the  final  installment  is paid.
Ameritech  has  retained a security  interest  in the shares and each  purchaser
remains  personally  liable  until the final  installment  payment is  received.
However, the purchasers or their transferees will receive all ordinary dividends
on the underlying  shares in the interim period.  The trustee will have one vote
for  each  share,  and will  vote the  shares  based  on  instructions  from the
purchasers or their transferees.

In accordance  with FAS 125 "Accounting for Transfers and Servicing of Financial
Assets  and  Extinguishments  of  Liabilities,"  Ameritech  accounted  for  this
transaction  as a sale and  recorded an  after-tax  gain of  approximately  $1.0
billion, which will be reflected in the second quarter of 1998.

Because  the  receivable  from the second  installment  payment  does not have a
stated  interest  rate,  Ameritech  is  imputing  interest  at  9%.  Subject  to
applicable  exchange rates,  Ameritech  expects to receive total net proceeds of
approximately  $2.1 billion (before deducting  transaction  costs). Net proceeds
from the initial  installment  of the  purchase  price were  approximately  $1.1
billion after application of applicable  exchange rates,  which were used to pay
down short-term debt balances and for general corporate purposes.  Ameritech has
hedged  substantially  all  foreign  exchange  risk  associated  with the  final
installment of the purchase price.



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<PAGE>



                        DESCRIPTION OF SBC CAPITAL STOCK

    The following  description of certain terms of the capital stock of SBC does
not purport to be complete  and is qualified in its entirety by reference to the
SBC Restated  Certificate  incorporated  herein by reference and to the relative
rights,  preferences  and  limitations  of the  Series  A  Junior  Participating
Preferred Stock (the "SBC Participating  Preferred Stock"),  which documents are
filed or incorporated by reference as exhibits to the Registration  Statement of
which this Joint Proxy Statement/Prospectus is a part.

    The  authorized  capital  stock of SBC currently  consists of  7,000,000,000
shares of SBC  Common  Stock and will  consist  of  10,000,000,000  if the Share
Increase  Proposal is adopted,  and 10,000,000  shares of preferred  stock,  par
value $1.00 per share issuable in series (the "SBC Preferred Stock"). Each share
of SBC Common Stock trades with one fourth of a SBC Right.  See "--  Description
of SBC Rights." As of [o], 1998, there were outstanding [o] shares of SBC Common
Stock,  with an additional [o] shares issued and held in treasury.  There are no
shares of SBC Preferred Stock outstanding, but SBC has designated all 10,000,000
shares as SBC Participating Preferred Stock.

SBC COMMON STOCK

    The holders of SBC Common  Stock are entitled to one vote per share for each
share  held of record on all  matters  voted on by  shareowners,  including  the
election of directors, and are entitled to participate equally in dividends when
and as such  dividends  may be  declared  by the SBC Board out of funds  legally
available  therefor.  As a Delaware  corporation,  SBC is  subject to  statutory
limitations  on the  declaration  and  payment of  dividends.  In the event of a
liquidation,  dissolution or winding up of SBC, holders of SBC Common Stock have
the right to a ratable portion of assets remaining after satisfaction in full of
the prior rights of  creditors,  including  holders of SBC's  indebtedness,  all
liabilities and the aggregate liquidation  preferences of any outstanding shares
of SBC  Preferred  Stock.  The holders of SBC Common  Stock have no  conversion,
redemption,  preemptive or cumulative voting rights.  All outstanding  shares of
SBC  Common  Stock are,  and the shares of SBC Common  Stock to be issued in the
Merger will be, validly issued, fully paid and non-assessable.

    The  transfer  agent and  registrar  for SBC Common Stock is The Bank of New
York, 48 Wall Street, New York, New York 10286.

SBC PREFERRED STOCK

    The SBC Restated  Certificate  provides that the SBC Preferred  Stock may be
issued from time to time in one or more  series.  The SBC Board is  specifically
authorized  to  establish  the  number of shares  in any  series  and to set the
designation  of any  series  and the  powers,  preferences,  and  rights and the
qualifications,  limitations  or  restrictions  on each series of SBC  Preferred
Stock. The holders of SBC Preferred Stock will have no preemptive rights.

    In connection  with the SBC Rights  Agreement,  the SBC Board has authorized
the issuance of up to 10,000,000  shares of SBC  Participating  Preferred Stock.
Upon issuance,  each share of SBC  Participating  Preferred Stock is entitled to
quarterly  cash  dividends  equal to the greater of $5 or 200 times  (subject to
antidilution  adjustments  for stock  dividends  and stock splits) the aggregate
value of all dividends or other distributions  declared on a share of SBC Common
Stock (other than  distributions  of SBC Common Stock) since the last  quarterly
dividend payment date. The SBC  Participating  Preferred Stock is not redeemable
by SBC.

    Each share of SBC  Participating  Preferred  Stock is  entitled to 400 votes
(subject to antidilution  adjustments) on all matters submitted to a vote of the
shareowners  of SBC,  voting  together  as one class with SBC Common  Stock.  In
addition,  if at any time dividends in an amount equal to six quarterly dividend
payments will have accrued and be unpaid, the SBC Board will be increased by two
directors  and holders of the SBC  Participating  Preferred  Stock will have the
right  to  elect  two  members  to the  SBC  Board  until  dividends  on the SBC
Participating  Preferred  Stock  have  been  declared  and paid or set apart for
payment.  Except as required by  applicable  law,  holders of SBC  Participating
Preferred  Stock have no other  special  voting  rights.  Whenever  dividends or
distributions on the SBC  Participating  Preferred Stock are in arrears,  SBC is
prohibited from declaring or paying dividends or  distributions  on, and SBC and
any subsidiary are prohibited  from redeeming or acquiring for value,  any stock
ranking junior as to dividends or upon  liquidation.  During any such arrearage,
SBC may  declare or pay  dividends  on stock  ranking  on a parity  with the SBC
Participating  Preferred  Stock  as to  dividends  or upon  liquidation  only if
declared or paid ratably with the SBC Participating  Preferred Stock. During any
such  arrearage,  SBC  and any  subsidiary  are  prohibited  from  redeeming  or
acquiring  for value any such parity  stock or any SBC  Participating  Preferred
Stock, except pursuant to an exchange of



                                       68

<PAGE>



parity stock for stock ranking junior to the SBC  Participating  Preferred Stock
or pursuant to a purchase  offer to the SBC  Participating  Preferred  Stock and
holders  of  parity  stock  on terms  the SBC  Board  determines  to be fair and
equitable.

    The SBC  Participating  Preferred  Stock ranks junior to all other series of
SBC's  preferred  stock as to the payment of dividends and the  distribution  of
assets, unless the terms of any such series provides otherwise.

    Upon  any   liquidation,   dissolution   or  winding  up  of  SBC,  the  SBC
Participating  Preferred  Stock is entitled to a liquidation  preference of $100
per share plus any accrued but unpaid dividends,  subject to the prior rights of
any  series  of  preferred  stock  ranking  in  liquidation  senior  to the  SBC
Participating  Preferred  Stock.  In the event of any  shortfall  in the  assets
available  for  distribution,  any such  liquidating  distribution  will be made
ratably  to the SBC  Participating  Preferred  Stock  and any  other  series  of
preferred stock ranking on a parity in proportion to their relative  liquidation
preferences. Following such payment, no additional liquidating distributions may
be made on the SBC Participating  Preferred Stock until each share of SBC Common
Stock has received $0.50 (subject to antidilution adjustments).  Thereafter, any
remaining  assets  will  be  distributed  to  each  share  of SBC  Participating
Preferred  Stock  and each  share of SBC  Common  Stock in the ratio of 400 to 1
(subject to antidilution adjustments).

DESCRIPTION OF SBC RIGHTS

    The SBC Rights Agreement is intended to protect  shareowners in the event of
unsolicited  offers or attempts  to acquire  SBC,  including  offers that do not
treat  all  shareowners  equally,  acquisitions  in the open  market  of  shares
constituting  control  without  offering fair value to all shareowners and other
coercive or unfair takeover tactics that could impair the SBC Board's ability to
represent  shareowners'  interests fully.  Pursuant to the SBC Rights Agreement,
the SBC  Board  declared  a  dividend  distribution  of one SBC  Right  for each
outstanding  share of SBC Common Stock to  shareowners of record at the close of
business on February 16, 1989 (the "SBC Rights Record Date"), and authorized the
issuance of one SBC Right (as adjusted pursuant to the SBC Rights Agreement,  as
described  below) for each  share of SBC Common  Stock  issued  between  the SBC
Rights  Record  Date and the SBC  Distribution  Date (as defined  below).  After
giving  effect  to a stock  split  in May  1993 and the SBC  Stock  Split,  each
effected  in the  form of a stock  dividend,  each  share  of SBC  Common  Stock
outstanding or to be issued prior to the SBC Distribution  Date has or will have
attached  one-quarter  of an SBC Right.  Each SBC Right  entitles the registered
holder to  purchase  from SBC one  one-hundredth  of a share (an "SBC  Unit") of
SBC's Participating  Preferred Stock at a price of $160 per SBC Unit, subject to
adjustment,  which is not exercisable until after an SBC Distribution  Date. The
description  and  terms  of the SBC  Rights  are  set  forth  in the SBC  Rights
Agreement  dated as of January  27,  1989 and amended on August 5, 1992 and June
15, 1994 between SBC and The Bank of New York, as Rights Agent.  One-quarter  of
an SBC Right will be  attached to each share of SBC Common  Stock  issued by SBC
(including  shares of SBC Common  Stock  issued to holders of  Ameritech  Common
Stock in the Merger).

    The SBC Rights have certain anti-takeover  effects. The SBC Rights may cause
substantial  dilution  to a person  that  attempts  to acquire  SBC  without the
approval of the SBC Board. The SBC Rights, however, should not affect offers for
all outstanding  shares of SBC Common Stock at a fair price and otherwise in the
best  interests of SBC and its  shareowners  as  determined by the SBC Board and
should not interfere with any merger or other business  combination  approved by
the SBC Board since the SBC Board may, at its option,  at any time until 10 days
following the SBC Stock Acquisition Date (as defined below),  redeem all but not
less than all of the then  outstanding SBC Rights at a redemption  price of $.05
per share,  except that in certain  circumstances  a majority of  directors  not
affiliated  with an SBC  Acquiring  Person (as defined  below) or an SBC Adverse
Person (as  defined  below)  who were  elected  by a  majority  of  unaffiliated
directors may need to approve the redemption.

    Initially,  the SBC  Rights  are and will be  attached  to all  certificates
representing  SBC Common Stock  (including  shares  issued in the Merger) at the
time outstanding.  The SBC Rights will separate from the SBC Common Stock on the
SBC Distribution Date, which is defined as (i) 10 business days after the public
announcement  by SBC or the SBC  Acquiring  Person  (the  date  of  such  public
announcement, the "SBC Stock Acquisition Date") that a person (an "SBC Acquiring
Person") has acquired 20% or more of the then outstanding SBC Common Stock, (ii)
10 business days following  commencement of a tender offer or exchange offer for
20% or more of the then  outstanding  SBC Common Stock or (iii) 10 business days
after  an  owner  of 10% or more of the then  outstanding  SBC  Common  Stock is
determined  to be an "SBC Adverse  Person" by the SBC Board of  Directors  and a
majority of SBC's  independent  directors  that are not  officers of SBC. An SBC
Adverse Person is one who intends to have SBC repurchase such person's ownership
interest,  who intends to pressure SBC into action for the short-term  financial
gain of such person and such action is not in the best  long-term  interests  of
SBC or its shareowners or whose ownership is likely to cause a material  adverse
effect



                                       69

<PAGE>



on the business or prospects of SBC (including,  but not limited to,  impairment
of SBC's (i) relationships with customers, (ii) relationships with regulators or
(iii) ability to maintain its competitive position).

    If an "SBC Flip-in Event" occurs,  the holder of an SBC Right is entitled to
receive  SBC  Common  Stock or other  property  of SBC  valued  at two times the
exercise  price  of the SBC  Right.  An SBC  Flip-in  Event  occurs  if a person
acquires  20% or more of the SBC Common Stock  (except  offers to acquire all of
the SBC Common Stock deemed by a majority of the SBC Board that are not officers
of SBC and  who  are  not  representatives,  nominees  or  associates  of an SBC
Acquiring  Person to be fair and in the best interests of SBC) or if a person is
determined to be an SBC Adverse  Person.  Following the  occurrence of a Flip-in
Event, SBC may exchange at its option, without requiring payment therefrom,  SBC
Common Stock and cash or other assets for an SBC Right.

    To avoid the  consequences  of an SBC Flip-in Event,  SBC may redeem the SBC
Rights in whole,  but not in part, at a redemption  price of $0.05 per SBC Right
at any time  prior to an SBC Stock  Acquisition  Date,  except  that in  certain
circumstances  a majority of  directors  not  affiliated  with an SBC  Acquiring
Person or an SBC Adverse  Person who were elected by a majority of  unaffiliated
directors may need to approve the redemption.

    If an "SBC Flip-over Event" occurs, the holder of a SBC Right is entitled to
receive  common stock of a company that has acquired SBC valued at two times the
exercise  price  of the SBC  Right.  An SBC Flip-over  Event  occurs  if SBC is
acquired  in a merger  or other  business  combination  in which  SBC is not the
survivor or if 50% or more of SBC's  assets,  cash flow or earning power is sold
or transferred.

    Following the occurrence of an SBC Flip-in Event or SBC Flip-over Event, all
SBC Rights  that are  beneficially  owned by an SBC  Acquiring  Person or an SBC
Adverse Person or any transferee thereof will be null and void.

    The  SBC  Rights  Agreement  may be  amended  at any  time  prior  to an SBC
Distribution  Date, without the approval of holders of SBC Rights in any manner,
except to amend the Redemption  Price (as defined in the SBC Rights  Agreement),
the SBC Rights  Expiration  Date,  the SBC Purchase  Price and the number of SBC
Units for which an SBC Right is exercisable.

    The SBC Rights  Agreement  expires on the SBC Rights  Expiration Date. As of
the  date of  this  Joint  Proxy  Statement/Prospectus,  SBC has not  determined
whether it will enter into an  amendment  of the SBC Rights  Agreement  or a new
rights  agreement  which  would  have the effect  that the SBC Rights  currently
outstanding  under the SBC Rights  Agreement  would  continue to be  outstanding
after the SBC Rights Expiration Date. If the SBC Rights or SBC Substitute Rights
are  outstanding  at the time shares of SBC Common Stock are issued  pursuant to
the Merger  Agreement,  such shares of SBC Common  Stock will have  attached the
appropriate number of SBC Rights or SBC Substitute Rights. If no such rights are
outstanding  at the time shares of SBC Common  Stock are issued  pursuant to the
Merger Agreement, no rights will be attached to such shares of SBC Common Stock.

    The foregoing  description of the SBC Rights is qualified in its entirety by
reference  to the SBC  Rights  Agreement,  which  is filed  or  incorporated  by
reference as an exhibit to the Registration  Statement of which this Joint Proxy
Statement/Prospectus is a part.


                   COMPARISON OF CERTAIN RIGHTS OF SHAREOWNERS
                              OF SBC AND AMERITECH

GENERAL

    As a result of the Merger,  holders of  Ameritech  Common  Stock will become
holders  of SBC  Common  Stock and the  rights  of all such  former  holders  of
Ameritech  Common  Stock  will  thereafter  be  governed  by  the  SBC  Restated
Certificate,  the SBC  Bylaws  and the DGCL  (which is the law  governing  their
rights as  shareowners  of  Ameritech).  The rights of the holders of  Ameritech
Common Stock are  presently  governed by the  Ameritech  Charter,  the Ameritech
Bylaws and the DGCL.  The  following  summary,  which  does not  purport to be a
complete statement of the differences among the rights of the shareowners of SBC
and  Ameritech,   sets  forth  certain  differences  between  the  SBC  Restated
Certificate and the SBC Bylaws,  on the one hand, and the Ameritech  Charter and
the  Ameritech  Bylaws,  on the other hand.  This  summary is  qualified  in its
entirety by reference to the full text of each of such documents.




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<PAGE>



SIZE AND CLASSIFICATION OF THE BOARD OF DIRECTORS

    SBC

    The  SBC  Bylaws  provide  that  the  number  of  directors  of SBC  will be
determined  from time to time by a majority  of the SBC  Board,  but in no event
will the SBC Board be comprised of more than 21 members.  The current  number of
directors  is 19. The SBC Bylaws also provide that the SBC Board will be divided
into three  classes with the number of  directors  divided as evenly as possible
among the three  classes.  Each  class is  elected  to serve for a term of three
years.  Each year the term of one class of directors  expires and  approximately
one-third of the directors are elected.  The SBC Restated  Certificate  provides
that the classified  board provision and the limitation on the maximum number of
directors  that may serve on the SBC Board may only be amended or  repealed by a
two-thirds  majority  vote of the  total  number  of shares of stock of SBC then
outstanding and entitled to vote.

    Ameritech

    The  Ameritech  Charter  provides  that the number of directors of Ameritech
will be determined from time to time by a majority vote of the Ameritech  Board,
but may not be less than three or more than 18. Until 1995, the Ameritech  Board
was divided into three classes of directors with one class of directors  elected
each year for a three-year term, but an amendment to the Ameritech Charter filed
on April 30,  1996  eliminated  the  classification  of the  Ameritech  Board as
directors'  terms expire.  Pursuant to that  amendment,  all  directors  will be
elected annually beginning in 1999 and hold office until the next annual meeting
of shareowners and until their successors are elected or qualified, or until the
directors' earlier resignation or removal.

REMOVAL OF DIRECTORS

    SBC

    Pursuant to the DGCL,  unless a corporation's  certificate of  incorporation
provides  otherwise,  in the case of a  corporation  whose board of directors is
classified  (as the SBC Board is),  any  director or the entire SBC Board may be
removed  only for cause and only by the  affirmative  vote of a majority  of the
outstanding  shares of SBC capital  stock  entitled  to vote in the  election of
directors.

    Ameritech

    The  Ameritech  Charter  provides  that no director will be removed from the
Ameritech  Board by action of the  shareowners of Ameritech other than for cause
(which means that the conduct of such director has been determined by a court of
competent  jurisdiction  to  constitute  a breach of such  director's  fiduciary
duty).  To remove a director for cause,  the holders of a majority of the shares
then entitled to vote in an election of directors must vote in favor of removal.

ACTION BY WRITTEN CONSENT

    SBC

    Under the DGCL, unless otherwise provided in a corporation's  certificate of
incorporation,  shareowners  may take action  without a meeting,  without  prior
notice and without a vote,  upon the written  consent of shareowners  having not
less than the minimum  number of votes that would be necessary to authorize  the
proposed  action at a meeting at which all shares  entitled to vote were present
and voted.  The SBC Restated  Certificate  provides  that action can be taken by
shareowners without a meeting if a consent in writing, setting forth the actions
so taken, is signed by the holders of at least  two-thirds of all the issued and
outstanding shares of stock of SBC entitled to vote thereon at any such meeting.

    Ameritech

    The Ameritech Charter requires that all actions by shareowners be taken at a
duly called annual or special meeting and may not be taken by written consent of
such shareowners.



                                       71

<PAGE>




MEETINGS OF SHAREOWNERS; QUORUM AND VOTING

    SBC

    Pursuant to the SBC Bylaws,  a special  meeting of shareowners may be called
at any time by  either  the SBC  Board or the  Chairman  of the SBC  Board.  The
Chairman  of the SBC  Board  is  required  to call a  special  meeting  whenever
requested to do so by shareowners  representing  two-thirds of the shares of SBC
then outstanding and entitled to vote at the meeting.

    The SBC  Bylaws  provide  that the  presence  in person or by proxy of forty
percent of the issued and outstanding  shares of SBC stock entitled to vote will
constitute a quorum. When a quorum is present or represented at a meeting of the
shareowners  of SBC,  the vote of a majority  of the votes cast will  decide any
question  brought  before the meeting,  unless the question is one upon which by
express provision of the DGCL, the SBC Restated  Certificate or the SBC Bylaws a
different vote is required, in which case such express provision will govern and
control the decision of such question  brought before the meeting.  See "-- Size
and Classification of Directors."

    Ameritech

    The Ameritech  Bylaws provide that a special  meeting of shareowners  may be
called  at any  time by  either  the  Ameritech  Board  or the  Chairman  of the
Ameritech Board. The Ameritech Bylaws also state that the presence, in person or
by proxy, of a majority of the outstanding  stock entitled to vote constitutes a
quorum at all shareowners' meetings, except as provided by law. When a quorum is
present,  a majority vote will decide any question  brought  before the meeting,
unless a different vote is required by law or by the Ameritech Charter.

SHAREOWNER PROPOSALS AND SHAREOWNER NOMINATIONS OF DIRECTORS

    SBC

    The SBC Bylaws  establish  procedures that must be followed for a shareowner
to submit a  proposal  to be voted on by the  shareowners  of SBC at its  annual
meeting of shareowners and a substantially  similar procedure to be followed for
the  nomination  and  election of  directors.  No business  may be proposed by a
shareowner at the annual meeting of shareowners without giving written notice to
the  Secretary  of SBC not less than 60 days or more  than 90 days  prior to the
scheduled date of the meeting.  In the event,  however,  that less than 70 days'
notice  or  prior  public  disclosure  of the  date of the  meeting  is given to
shareowners,  notice by the  shareowner  to be timely must be received not later
than the close of business on the tenth day following the earlier of (i) the day
on which such  notice of the date of the  meeting  was mailed or (ii) the day on
which such public  disclosure was made. The  shareowner's  notice must set forth
(i) the name and record address of such  shareowner and (ii) the class or series
and number of shares of capital stock of SBC which are owned  beneficially or of
record by such shareowner.  In addition,  with respect to business to be brought
before an annual  meeting,  the  shareowner's  notice must set forth (i) a brief
description of the business  desired to be brought before the annual meeting and
the  reasons for  conducting  the  business  at the annual  meeting and (ii) any
material  interest the  shareowner  has in the  proposal.  Shareowners'  notices
relating to  director  nominations  must  include  (i) the name,  age,  business
address and residence address of the nominee,  (ii) the principal  occupation or
employment  of the  nominee,  (iii) the class or series  and number of shares of
capital  stock of SBC which are owned  beneficially  or of record by the nominee
and (iv) any other information relating to the nominee and the shareowner making
the  nomination  that is required to be disclosed in a proxy  statement or other
filings  required to be made in connection with the  solicitation of proxies for
the  election of directors  under the  Exchange  Act. If the Chairman of the SBC
Board  determines that any such proposal  (including a director  nomination) was
not made in accordance  with these  procedures or is otherwise not in accordance
with law, the Chairman of the SBC Board may so declare at the meeting,  and such
defective proposal (or nomination) will be disregarded.

    Ameritech

    The Ameritech  Charter and the Ameritech  Bylaws do not set forth procedures
for shareowner proposals or for the nomination and election of directors.




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<PAGE>



AMENDMENT OF CORPORATE CHARTER AND BYLAWS

    SBC

    Under the DGCL, an amendment to a corporation's certificate of incorporation
generally requires the recommendation of the board of directors, the approval of
a majority of all shares  entitled to vote thereon,  voting together as a single
class, and the majority of the outstanding  stock of each class entitled to vote
thereon.

    Under the DGCL, a  corporation's  board of directors may amend its bylaws if
its certificate of incorporation contains a provision entitling the directors to
amend the bylaws.  Even if the  certificate  of  incorporation  contains  such a
provision,  the  shareowners  also have the power to amend the  bylaws.  The SBC
Restated  Certificate  provides  that the SBC Board is expressly  authorized  to
adopt,  amend or  repeal  the SBC  Bylaws  without  the  consent  or vote of its
shareowners,  except  for  certain  SBC  Bylaws  described  under  "--  Size and
Classification of the Board of Directors" and "-- Fair Price Provisions."

    Ameritech

    The Ameritech Charter provides that Ameritech may amend, alter or repeal any
provision  contained in the Ameritech Charter;  however,  an affirmative vote of
80% of all voting  stock of  Ameritech  is required to change,  repeal or render
inoperative any of the provisions set forth in the Ameritech Charter  concerning
the Ameritech  Board,  super-majority  voting  requirements for certain business
combinations or such  super-majority  voting  requirements for amendments to the
Ameritech  Charter.  Notwithstanding  this  requirement,  the  80%  vote  is not
required for any amendments  concerning  these  provisions  that are unanimously
recommended to the  shareowners by the Ameritech Board when no other entity owns
or proposes  to acquire  more than 5% of  Ameritech's  voting  stock,  or if all
directors  then serving on the  Ameritech  Board were  members of the  Ameritech
Board prior to the  acquisition  of 5% of  Ameritech's  voting  stock by another
entity. See "Fair Price Provisions."

    The Ameritech Bylaws may be amended by the Ameritech Board. In addition, the
Ameritech Bylaws may be amended by the shareowners of Ameritech.

FAIR PRICE PROVISIONS

    SBC

    The SBC  Bylaws  provide  that  certain  "business  combinations"  involving
"interested  shareowners"  (defined  generally to be beneficial owners of 10% or
more of the voting stock of SBC or any person acquiring any voting stock, in the
two year  period  prior to the  business  combination,  from  such a person in a
non-public  offering)  require  approval  by a vote of the  holders  of at least
two-thirds  of the  then-outstanding  shares of capital stock of SBC entitled to
vote generally for the election of directors,  voting as a single class,  if not
previously  approved  by a majority  of the members of the SBC Board who are not
affiliated with the interested  shareowner (and those who became directors after
the time at which the  interested  shareowner  acquired its shares,  if they are
approved by a majority of the unaffiliated  directors) or unless certain minimum
price and procedural criteria are satisfied.  The minimum price criteria require
that the consideration paid to SBC's shareowners must be either cash or the same
type of consideration paid by the interested shareowner in acquiring the largest
portion of its SBC shares prior to the proposed  business  combination and would
generally  have to be at least  equal in value to the greater of (i) the highest
per share price paid by the interested  shareowner in acquiring any share of SBC
Common Stock during the two years prior to the announcement date of the proposed
business  combination  or in the  transaction  in which it became an  interested
shareowner  (whichever  is higher),  (ii) the fair market value per share of SBC
Common Stock on the day after such announcement date or on the date on which the
interested  shareowner became an interested shareowner (whichever is higher), or
(iii) the price per share determined pursuant to (ii) multiplied by the ratio of
(a) the highest per share price paid by the  interested  shareowner in acquiring
any share of SBC Common Stock during the two years prior to such announcement to
(b) the fair market value per share of SBC Common Stock on the first day in such
two-year period upon which the interested  shareowner acquired any shares of SBC
Common  Stock.  This  provision may only be amended or repealed by a vote of the
holders of at least two-thirds of the  then-outstanding  shares of capital stock
of SBC entitled to vote  generally  for the election of  directors,  voting as a
single class.



                                       73

<PAGE>



    Ameritech

    The  Ameritech  Charter  provides  that the  affirmative  vote of 80% of all
outstanding  voting  stock is  required  to approve an  "extraordinary  business
transaction"  with another  entity if, as of the record date for such vote,  the
other entity is the beneficial owner of 5% or more of Ameritech's  voting stock.
For the  purposes  of this  provision,  an  extraordinary  business  transaction
includes  the  merger  or  consolidation  of  Ameritech  with  or  into  another
corporation, the sale, lease, exchange or disposition of assets representing 10%
or more of Ameritech's total assets or going concern value (as determined by the
Ameritech  Board),  or the sale or lease to  Ameritech or its  subsidiaries,  in
exchange for securities of Ameritech or its  subsidiaries,  of any assets having
an  aggregate  fair  market  value in  excess  of $5  million.  This 80%  voting
requirement does not apply, however, if (a) the value of the consideration to be
received  by  Ameritech  common   shareowners  in  the  extraordinary   business
transaction  is equal to or greater than (i) the highest share price paid by the
acquiring  entity for any of its Ameritech  holdings,  and (ii) Ameritech's book
value per share in its most recently published financial  statements,  and (b) a
proxy  statement  soliciting  approval  of  the  transaction  is  mailed  to all
Ameritech common shareowners and contains any recommendation that the continuing
directors (as defined in the Ameritech  Charter) or the Ameritech Board may have
concerning  the  advisability  of  undertaking  the  transaction  as well as any
opinions  from experts that the  Ameritech  Board has  received  concerning  the
fairness of the transaction to Ameritech common  shareowners.  In addition,  the
80% voting  requirement  will not be  applicable if the  extraordinary  business
transaction is approved by at least 80% of the continuing  directors (as defined
in the Ameritech Charter) at a time when the continuing  directors  constitute a
majority of the Ameritech Board.

RIGHTS PLANS

    SBC

    Pursuant  to the SBC Rights  Agreement  each  share of SBC Common  Stock has
attached to it after giving effect to the May 1993 stock split and the SBC Stock
Split one-quarter of an SBC Right. Each SBC Right entitles the holder thereof to
purchase one one-hundredth of a share of SBC  Participating  Preferred Stock for
$160. Until the SBC Distribution  Date the SBC Rights remain attached to the SBC
Common Stock. Following the SBC Distribution Date, the SBC Rights will separate.
After the  occurrence  of an SBC  Flip-in  Event or an SBC Flip-over  Event the
holders of the SBC Rights will have the right to  purchase  shares of SBC Common
Stock or shares  of  common  stock of an SBC  Acquiring  Person  or SBC  Adverse
Person,  as the case may be,  having a market value of twice the purchase  price
(i.e., $320 worth of SBC Common Stock or common stock of an SBC Acquiring Person
or SBC Adverse Person,  as the case may be, for $160).  See  "Description of SBC
Common Stock -- Description of Rights."

    The SBC Board may,  at its  option,  redeem  the SBC Rights at a  redemption
price of $0.05  per SBC  Right,  generally  at any  time  prior to an SBC  Stock
Acquisition  Date.  The SBC Rights  will  terminate  on January  27,  1999.  See
"Description of SBC Capital Stock -- Description of SBC Rights."

    Ameritech

    Pursuant to the Ameritech Rights  Agreement,  each share of Ameritech Common
Stock has  attached  to it one  quarter of a right,  and each such  right,  when
exercisable,   permits  the  holder  thereof  to  purchase  from  Ameritech  one
one-hundredth of a share of Series A Junior Participating  Preference Stock, par
value $1.00 per share,  for $125,  subject to  adjustment  (each,  an "Ameritech
Right").  Until the  Ameritech  Distribution  Date (as defined in the  Ameritech
Rights Agreement),  the Ameritech Rights remain attached to the Ameritech Common
Stock, but following the Ameritech  Distribution Date, the Ameritech Rights will
separate.  In the event that any person becomes the  beneficial  owner of 20% or
more of the  then-outstanding  shares of Ameritech Common Stock, except pursuant
to a tender or exchange offer for all outstanding  shares that a majority of the
Ameritech Board determines to be fair and in the best interests of Ameritech and
its shareowners, each owner of an Ameritech Right will have the right to receive
upon exercise  Ameritech Common Stock or other  consideration with a value equal
to twice the exercise price of the Ameritech Right. The Ameritech Rights are not
exercisable  until the  Ameritech  Distribution  Date and will  expire  upon the
earliest of (i) December 30, 1998, (ii)  consummation of certain approved merger
transactions,  or (iii) redemption by Ameritech at a price of $.01 per Ameritech
Right.  The  Ameritech  Rights  Agreement was amended on May 10, 1998 to provide
that the Merger Agreement and the consummation of the transactions  contemplated
by the  Merger  Agreement  will not cause any of the  provisions  of the  Rights
Agreement to be triggered.



                                       74

<PAGE>



    The description of the Ameritech  Rights  Agreement  specifying the terms of
the Ameritech Rights is incorporated herein by reference.  See "Incorporation of
Certain  Documents by  Reference."  The foregoing  description  of the Ameritech
Rights is  qualified  in its  entirety  by  reference  to the  Ameritech  Rights
Agreement.

INDEMNIFICATION OF OFFICERS AND DIRECTORS

    SBC

    Section  145 of the DGCL  provides  that a  corporation  may  indemnify  its
officers and directors who were or are a party to any action, suit or proceeding
by reason of the fact that he or she was a director, officer, or employee of the
corporation  by, among other things,  a majority vote of a quorum  consisting of
directors  who were not parties to such action,  suit, or  proceeding,  provided
that such  officers  and  directors  acted in good  faith  and in a manner  they
reasonably  believed  to be in or not  opposed  to  the  best  interests  of the
corporation.  The SBC  Restated  Certificate  provides  for  indemnification  of
officers and  directors as permitted by the DGCL.  The SBC Restated  Certificate
also provides for the payment of expenses  incurred by directors and officers in
defending a proceeding in advance of the final disposition of such proceeding as
authorized  by the SBC Board upon receipt of an  undertaking  by or on behalf of
that person to repay such amounts unless it is ultimately determined that person
is entitled to be indemnified under Delaware law.

    Ameritech

    The Ameritech Bylaws provide for  indemnification  of directors and officers
of Ameritech to the full extent  permitted  by law.  The  Ameritech  Bylaws also
contain indemnification  provisions similar to those provisions contained in the
SBC  Restated  Certificate.   However,  in  the  case  of  criminal  actions  or
proceedings,  the Ameritech  Bylaws contain the additional  requirement that the
person being  indemnified  must have had no reasonable cause to believe that his
conduct was unlawful.  The Ameritech Bylaws also provide for payment of expenses
actually and reasonably  incurred by a director,  officer,  employee or agent in
connection  with  such an  action,  suit  or  proceeding  if he or she has  been
successful on the merits or otherwise in defense  thereof.  The Ameritech Bylaws
also provide for advancement of expenses upon receipt of an undertaking  similar
to  that  provided  for  in  the  SBC  Restated  Certificate.  With  respect  to
threatened,  pending  or  completed  legal  action by or on behalf of  Ameritech
against such person,  Ameritech  will  indemnify  such person  against  expenses
actually and reasonably incurred in connection with the defense or settlement of
such an action or suit,  provided  that such person acted in good faith and in a
manner  such  person  believed  to be in or  not  opposed  to  Ameritech's  best
interests.  No indemnification will be made, however, with respect to any claim,
issue or matter as to which such person has been found liable for  negligence or
misconduct in the  performance  of such  person's duty to Ameritech,  unless the
applicable court determines that such person is fairly or reasonably entitled to
indemnification.

    The Ameritech  Charter  further  provides that  Ameritech  directors have no
personal  liability to Ameritech or Ameritech  shareowners for monetary  damages
for breach of his or her fiduciary duty as a director, except (i) for any breach
of the director's  duty of loyalty to Ameritech or Ameritech  shareowners;  (ii)
for acts or omissions not in good faith or which involve intentional  misconduct
or a knowing violation of law; (iii) under Section 174 of the DGCL providing for
liability of  directors  for  unlawful  payment of  dividends or unlawful  stock
purchases or redemptions,  or (iv) for any  transaction  from which the director
derived an improper personal benefit.

                                     EXPERTS

    The consolidated  financial  statements and schedules of SBC at December 31,
1997 and 1996,  and for each of the three years in the period ended December 31,
1997,  incorporated by reference in this Joint  Proxy  Statement/Prospectus have
been audited by Ernst & Young LLP, independent  auditors,  as set forth in their
reports thereon incorporated herein by reference which, as to the years 1996 and
1995, are based in part on the reports of Coopers & Lybrand  L.L.P,  independent
accountants.   Such   consolidated   financial   statements  and  schedules  are
incorporated  herein by reference in reliance  upon such reports  given upon the
authority of such firms as experts in accounting and auditing.

    The  consolidated  financial  statements  and  schedules  of Ameritech as of
December 31, 1997 and 1996 and for the three years in the period ended  December
31,  1997,  included  and  incorporated  by  reference  in the  Ameritech  10-K,
incorporated  by  reference  in  this  Joint  Proxy   Statement/Prospectus   and
Registration  Statement  have been audited by Arthur  Andersen LLP,  independent
public  accountants,   as  set  forth  in  their  reports  thereon,   which  are
incorporated  herein by reference.  Such consolidated  financial  statements are
incorporated  herein by  reference  in reliance  upon  authority of such firm as
experts in accounting and auditing.


                                       75

<PAGE>




    The  consolidated  financial  statements and schedule of SNET as of December
31, 1997 and 1996,  and for the three  years in the period  ended  December  31,
1997,  incorporated  by reference in this Joint Proxy  Statement/Prospectus  and
Registration  Statement,   have  been  audited  by  Coopers  &  Lybrand  L.L.P.,
independent  accountants,  as set  forth in their  reports  thereon,  which  are
incorporated  herein by reference.  Such consolidated  financial  statements are
incorporated  herein by  reference  in reliance  upon  authority of such firm as
experts in accounting and auditing.

                               VALIDITY OF SHARES

    The  validity  of the SBC Common  Stock to be issued  pursuant to the Merger
will be passed upon for SBC by James D. Ellis,  Senior  Executive Vice President
and   General   Counsel   of  SBC.   As  of  the  date  of  this   Joint   Proxy
Statement/Prospectus,  Mr.  Ellis owned less than ___% of the shares  (including
options representing certain rights to purchase shares) of SBC Common Stock.





























                                       76

<PAGE>



                             INDEX OF DEFINED TERMS

Term                                                                       Page
- ----                                                                       ----
1997 Ameritech 10-K.........................................................iii
1997 SBC 10-K...............................................................iii
Acquiring Person.............................................................34
Acquisition Proposal..........................................................4
ADSs.........................................................................64
Affiliates...................................................................46
Agreement for Services.......................................................49
Ameritech.....................................................................i
Ameritech Acquisition Proposal................................................4
Ameritech Affiliates Letter..................................................46
Ameritech Board...............................................................i
Ameritech Bylaws.............................................................11
Ameritech Cellular...........................................................25
Ameritech Certificate........................................................31
Ameritech Charter............................................................11
Ameritech Common Stock........................................................i
Ameritech Distribution Date..................................................68
Ameritech Option..............................................................6
Ameritech Other Assets.......................................................25
Ameritech PCS................................................................25
Ameritech Publishing.........................................................25
Ameritech Record Date.........................................................2
Ameritech Representatives....................................................36
Ameritech Required Consents..................................................42
Ameritech Right..............................................................68
Ameritech Rights Agreement...................................................33
Ameritech Special Meeting.....................................................i
Ameritech Stock Split........................................................12
Ameritech Stock Units........................................................40
Ameritech Telco..............................................................25
Applicants...................................................................39
BSE.........................................................................iii
Bylaw Amendment...............................................................i
Cable Franchise Agreements...................................................40
Cause........................................................................47
Cellular Comparable Companies................................................26
Certificate Letter of Transmittal............................................32
Certificate of Merger.........................................................4
Change in Control............................................................47
Change in Control Agreements.................................................47
Change in Control of Ameritech...............................................47
Closing Date..................................................................6
Code..........................................................................2
Communications Act............................................................6
Continuing Directors.........................................................68
Contract......................................................................8
Costs.........................................................................7
CSE.........................................................................iii
Current Premium...............................................................7
Currently Applicable Law.....................................................49
D&O Insurance.................................................................7
Department of Justice.........................................................5
DGCL..........................................................................4
EBIT.........................................................................34
EBITDA.......................................................................26





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<PAGE>



Effective Time................................................................2
Engagement Letter............................................................30
EPS..........................................................................28
Exchange Act................................................................iii
Exchange Agent...............................................................31
Exchange Procedures..........................................................31
Exchange Ratio................................................................i
Excluded Ameritech Common Stock...............................................i
Factual Representations......................................................49
FCC...........................................................................6
Final Expiration Date........................................................34
Final Order..................................................................42
FTC...........................................................................5
Goldman Sachs.................................................................3
Goldman Sachs Engagement Letter..............................................36
Good Reason..................................................................47
Governmental Entity..........................................................33
Historical Exchange Ratio....................................................25
HSR Act.......................................................................5
IBES.......................................................................  33
ICC..........................................................................39
ICC Application..............................................................39
Illinois Telecommunications Carriers.........................................39
Indemnified Party.............................................................7
Independent Telcos...........................................................26
Initial 50 Day Period.........................................................9
IPUA.........................................................................39
IRS..........................................................................50
LD Certificates..............................................................40
LE Certificates..............................................................40
LTM..........................................................................26
Material Adverse Effect......................................................38
Merger........................................................................i
Merger Agreement..............................................................i
Merger Consideration..........................................................2
Merger Proposal...............................................................i
Merger Sub....................................................................i
Named Executive Officers...................................................  52
Notification and Report Form..................................................5
NYNEX Merger...............................................................  33
NYSE........................................................................iii
Ohio Act.....................................................................39
Ohio Application.............................................................39
Ohio Bell....................................................................39
Order.........................................................................8
Overlapping Cellular Licenses................................................39
Pactel Acquisition.........................................................  33
PCS Comparable Companies.....................................................26
P/E Multiples................................................................28
Person.......................................................................32
PHLX........................................................................iii
POPs.........................................................................26
PSE.........................................................................iii
Publishing Comparable Companies..............................................26
PUC...........................................................................6
PUCO.........................................................................40
RBHCs........................................................................26
Redemption Price.............................................................64





                                       78

<PAGE>



Registered Ameritech Share...................................................31
Registered Letter of Transmittal.............................................32
Registered SBC Shares........................................................32
Registration Statement........................................................i
Regulatory Material Adverse Effect...........................................38
Salomon Smith Barney..........................................................3
SBC...........................................................................i
SBC Acquiring Person.........................................................63
SBC Acquisition Proposal......................................................4
SBC Adverse Person...........................................................63
SBC Affiliates Letter........................................................46
SBC Board.....................................................................i
SBC Cellular.................................................................28
SBC Common Stock..............................................................i
SBC Flip-over Event..........................................................64
SBC Flip-in Event............................................................64
SBC Other Assets.............................................................28
SBC Participating Preferred..................................................62
SBC PCS......................................................................28
SBC Preferred Stock..........................................................62
SBC Publishing...............................................................28
SBC Record Date...............................................................2
SBC Representatives..........................................................36
SBC Required Consents........................................................42
SBC Rights....................................................................i
SBC Rights Agreement.........................................................63
SBC Rights Expiration Date....................................................i
SBC Rights Record Date.......................................................63
SBC Special Meeting...........................................................i
SBC Stock Acquisition Date...................................................63
SBC Stock Split..............................................................12
SBC Stock Units..............................................................40
SBC Substitute Rights........................................................ii
SBC Unit.....................................................................63
SEC.........................................................................iii
Securities Act................................................................i
Selected Companies.........................................................  33
Severance Plan...............................................................47
Share Increase Proposal.......................................................i
Short-Term Incentive Plans...................................................48
Significant Subsidiaries.....................................................33
SNET..........................................................................i
SNET Agreement...............................................................35
SNET Common Stock............................................................63
State Certificates...........................................................40
Special Meetings..............................................................i
Subsidiary...................................................................33
Substitute Option.............................................................7
Substitute Option Price.......................................................7
Superior Ameritech Proposal...................................................5
Superior Proposal.............................................................5
Superior SBC Proposal.........................................................5
Surviving Corporation.........................................................i
TCNZ..........................................................................1
Termination Date..............................................................9
Termination Fee..............................................................10





                                       79

<PAGE>



WACC.........................................................................27






























                                       80

<PAGE>

                                                                         ANNEX A
                                                                 EXECUTION COPY













                          AGREEMENT AND PLAN OF MERGER


                                      Among

                              AMERITECH CORPORATION


                             SBC COMMUNICATIONS INC.


                                       and


                               SBC DELAWARE, INC.



                            Dated as of May 10, 1998


<PAGE>


                                TABLE OF CONTENTS

                                                                           PAGE
                                                                           ----

                                    RECITALS


                                    ARTICLE I

                       The Merger; Closing; Effective Time

1.1.  The Merger..............................................................1
1.2.  Closing.................................................................2
1.3.  Effective Time..........................................................2

                              ARTICLE II

               Certificate of Incorporation and By-Laws
                     of the Surviving Corporation

2.1.  The Certificate of Incorporation........................................2
2.2.  The By-Laws.............................................................3

                              ARTICLE III

                        Officers and Directors

3.1.  Directors of Surviving Corporation......................................3
3.2.  Officers of Surviving Corporation.......................................3
3.3.  Election to SBC's Board of Directors....................................3

                              ARTICLE IV

                Effect of the Merger on Capital Stock;
                       Exchange of Certificates

4.1.  Effect on Capital Stock.................................................4
      (a)    Merger Consideration.............................................4
      (b)    Cancellation of Shares...........................................5
      (c)    Merger Sub.......................................................5
4.2.  Exchange of Certificates for Shares.....................................5
      (a)    Exchange Procedures..............................................5
      (b)    Distributions with Respect to Unexchanged Shares; Voting.........7
      (c)    Transfers........................................................8
      (d)    Fractional Shares................................................8

                                      A-i


<PAGE>


                                                                           Page
                                                                           ----

      (e)    Termination of Exchange Period; Unclaimed Stock..................8
      (f)    Lost, Stolen or Destroyed Certificates...........................9
      (g)    Affiliates.......................................................9
4.3.  Dissenters' Rights......................................................9
4.4.  Adjustments to Prevent Dilution........................................10

                               ARTICLE V

                    Representations and Warranties

5.1.  Representations and Warranties of the Company, SBC and Merger Sub......10
      (a)    Organization, Good Standing and Qualification...................10
      (b)    Capital Structure...............................................11
      (c)    Corporate Authority; Approval and Fairness......................14
      (d)    Governmental Filings; No Violations.............................15
      (e)    Reports; Financial Statements...................................17
      (f)    Absence of Certain Changes......................................18
      (g)    Litigation and Liabilities......................................19
      (h)    Employee Benefits...............................................19
      (i)    Compliance with Laws............................................22
      (j)    Takeover Statutes...............................................23
      (k)    Environmental Matters...........................................23
      (l)    Accounting and Tax Matters......................................24
      (m)    Taxes...........................................................25
      (n)    Labor Matters...................................................26
      (o)    Rights Agreement................................................26
      (p)    Brokers and Finders.............................................26

                                   ARTICLE VI

                                    Covenants

6.1.  Interim Operations.....................................................27
6.2.  Acquisition Proposals..................................................33
6.3.  Information Supplied...................................................37
6.4.  Stockholders Meetings..................................................38
6.5.  Filings; Other Actions; Notification...................................38
6.6.  Access; Consultation...................................................41
6.7.  Affiliates.............................................................42
6.8.  Stock Exchange Listing and De-listing..................................43
6.9.  Publicity..............................................................43

                                     A-ii


<PAGE>


                                                                           Page
                                                                           ----

6.10. Benefits...............................................................43
      (a)    Stock Options...................................................43
      (b)    Employee Benefits...............................................45
6.11. Expenses...............................................................45
6.12. Indemnification; Directors' and Officers' Insurance....................45
6.13. Takeover Statute.......................................................47
6.14. Dividends..............................................................48
6.15. Confidentiality........................................................48
6.16. Control of the Company's Operations....................................48

                                   ARTICLE VII

                                   Conditions

7.1.  Conditions to Each Party's Obligation to Effect the Merger.............48
      (a)    Stockholder Approval............................................49
      (b)    NYSE Listing....................................................49
      (c)    Governmental Consents...........................................49
      (d)    Laws and Order..................................................50
      (e)    S-4.............................................................50
      (f)    Accountants' Letters............................................50
      (g)    Blue Sky Approvals..............................................50
7.2.  Conditions to Obligations of SBC and Merger Sub........................50
      (a)    Representations and Warranties..................................50
      (b)    Performance of Obligations of the Company.......................51
      (c)    Consents Under Agreements.......................................51
      (d)    Tax Opinion.....................................................51
7.3.  Conditions to Obligation of the Company................................51
      (a)    Representations and Warranties..................................51
      (b)    Performance of Obligations of SBC and Merger Sub................52
      (c)    Tax Opinion.....................................................52

                             ARTICLE VIII

                              Termination

8.1.  Termination by Mutual Consent..........................................52
8.2.  Termination by Either SBC or the Company...............................52
8.3.  Termination by the Company.............................................53
8.4.  Termination by SBC.....................................................55
8.5.  Effect of Termination and Abandonment..................................56


                                      A-iii


<PAGE>


                                                                           Page
                                                                           ----

                                   ARTICLE IX

                            Miscellaneous and General

9.1.  Survival...............................................................58
9.2.  Modification or Amendment..............................................58
9.3.  Waiver of Conditions...................................................59
9.4.  Counterparts...........................................................59
9.5.  GOVERNING LAW AND VENUE; WAIVER OF JURY TRIAL..........................59
9.6.  Notices................................................................60
9.7.  Entire Agreement.......................................................62
9.8.  No Third Party Beneficiaries...........................................62
9.9.  Obligations of SBC and of the Company..................................62
9.10. Severability...........................................................62
9.11. Interpretation.........................................................63
9.12. Captions...............................................................63
9.13. Assignment.............................................................63

EXHIBITS

A     Form of Company Affiliate's Letter . . . . . . . . . . . . . . . . . .A-1

B     Form of SBC Affiliate's Letter . . . . . . . . . . . . . . . . . . . .B-1


                                      A-iv


<PAGE>


Term                                                                    Section
- ----                                                                    -------


                             INDEX OF DEFINED TERMS


Affiliate................................................................6.7(a)

Agreement............................................................. preamble

Audit Date.............................................................. 5.1(e)

Bankruptcy and Equity Exception.......................................5.1(c)(i)

By-Laws.................................................................    2.2

Certificate............................................................. 4.1(a)

Certificate Letter of Transmittal........................................4.2(a)

Certificate of Merger...................................................    1.3

Charter.................................................................    2.1

Closing.................................................................    1.2

Closing Date............................................................    1.2

Code.................................................................. recitals

Company............................................................... preamble

Company Acquisition Proposal.............................................6.2(a)

Company Affiliate's Letter.............................................. 6.7(a)

Company Compensation and Benefit Plans................................5.1(h)(i)

Company Disclosure Letter...............................................    5.1

Company Option.......................................................6.10(a)(i)

Company Preference Shares.............................................5.1(b)(i)


                                       A-v

<PAGE>


Term                                                                    Section
- ----                                                                    -------

Company Preferred Shares..............................................5.1(b)(i)

Company Representatives..................................................6.2(a)

Company Required Consents.............................................5.1(d)(i)

Company Requisite Vote..............................................  5.1(c)(i)

Company Share............................................................4.1(a)

Company Shares.......................................................... 4.1(a)

Company Stock Plans.................................................  5.1(b)(i)

Company Stock Units..................................................6.10(a)(i)

Company Stockholders Meeting...........................................     6.4

Compensation and Benefit Plans.......................................5.1(h)(ii)

Confidentiality Agreement...............................................   6.15

Constituent Corporations...............................................preamble

Contracts............................................................5.1(d)(ii)

Costs...................................................................6.12(a)

Current Premium.........................................................6.12(c)

D&O Insurance...........................................................6.12(c)

DGCL.....................................................................   1.1

Director Designees......................................................    3.3

Disclosure Letter.......................................................    5.1

Effective Time..........................................................    1.3


                                      A-vi


<PAGE>


Term                                                                    Section
- ----                                                                    -------

Environmental Law....................................................... 5.1(k)

ERISA................................................................5.1(h)(ii)

ERISA Affiliate.....................................................5.1(h)(iii)

ERISA Affiliate Plan................................................5.1(h)(iii)

Exchange Act..........................................................5.1(b)(i)

Exchange Agent.......................................................... 4.2(a)

Exchange Ratio.......................................................... 4.1(a)

Excluded Company Shares................................................. 4.1(a)

FCC...................................................................5.1(d)(i)

Final Order............................................................. 7.1(c)

GAAP.................................................................... 5.1(e)

Governmental Entity...................................................5.1(d)(i)

Hazardous Substance..................................................... 5.1(k)

HSR Act.............................................................. 5.1(d)(i)

Indemnified Parties.....................................................6.12(a)

Initial 50 Day Period................................................... 8.3(b)

IRS..................................................................5.1(h)(ii)

Laws.................................................................... 5.1(i)

Material Adverse Effect................................................. 5.1(a)

Merger................................................................ recitals


                                      A-vii

<PAGE>

Term                                                                    Section
- ----                                                                    -------

Merger Consideration.................................................... 4.1(a)

Merger Sub.............................................................preamble

NYSE.....................................................................   6.8

Order................................................................... 7.1(d)

Pension Plan.........................................................5.1(h)(ii)

Permits..................................................................5.1(i)

Person...................................................................4.2(a)

Prospectus/Proxy Statement................................................. 6.3

PUC.................................................................. 5.1(d)(i)

Registered Company Shares................................................4.1(a)

Registered Letter of Transmittal.........................................4.2(a)

Registered SBC Shares................................................... 4.2(a)

Regulatory Material Adverse Effect.......................................6.5(c)

Reports................................................................. 5.1(e)

Rights Agreement..................................................... 5.1(b)(i)

Rights Amendment......................................................   5.1(o)

S-4 Registration Statement................................................  6.3

SBC....................................................................preamble

SBC Acquisition Proposal................................................ 6.2(b)

SBC Affiliate's Letter.................................................. 6.7(a)


                                     A-viii

<PAGE>


Term                                                                    Section
- ----                                                                    -------

SBC Common Stock........................................................ 4.1(a)

SBC Companies........................................................... 4.1(a)

SBC Disclosure Letter....................................................   5.1

SBC Preferred Shares.................................................5.1(b)(ii)

SBC Representatives..................................................... 6.2(b)

SBC Required Consents.................................................5.1(d)(i)

SBC Requisite Vote...................................................5.1(c)(ii)

SBC Rights.............................................................. 4.1(a)

SBC Rights Agreement.................................................5.1(b)(ii)

SBC Stock Plans......................................................5.1(b)(ii)

SBC Stock Units......................................................6.10(a)(i)

SBC Stockholders Meeting................................................    6.4

SEC....................................................................  5.1(e)

Securities Act........................................................5.1(d)(i)

Significant Subsidiary................................................5.1(b)(i)

SNET................................................................6.1(b)(vii)

SNET Agreement......................................................6.1(b)(vii)

Stockholders Meeting........................................................6.4

Subsidiary............................................................   5.1(a)

Substitute Option....................................................6.10(a)(i)


                                      A-ix

<PAGE>


Term                                                                    Section
- ----                                                                    -------

Substitute Option Price..............................................6.10(a)(i)

Superior Company Proposal..............................................  6.2(a)

Superior SBC Proposal................................................... 6.2(b)

Surviving Corporation..................................................     1.1

Takeover Statute.......................................................  5.1(j)

Tax....................................................................  5.1(m)

Tax Return.............................................................  5.1(m)

Taxable................................................................  5.1(m)

Taxes..................................................................  5.1(m)

Termination Date......................................................   8.2(i)

Termination Fee........................................................  8.5(b)

Utilities Laws........................................................5.1(d)(i)


                                       A-x


<PAGE>

                          AGREEMENT AND PLAN OF MERGER

         AGREEMENT AND PLAN OF MERGER (hereinafter called this "Agreement"),
dated as of May 10, 1998, among Ameritech Corporation, a Delaware corporation
(the "Company"), SBC Communications Inc., a Delaware corporation ("SBC"), and
SBC Delaware, Inc., a Delaware corporation and a wholly-owned subsidiary of SBC
("Merger Sub," the Company and Merger Sub sometimes being hereinafter together
referred to as the "Constituent Corporations").


                                    RECITALS

         WHEREAS, the respective Boards of Directors of each of SBC, Merger Sub
and the Company have approved this Agreement and the merger of Merger Sub with
and into the Company (the "Merger") upon the terms and subject to the conditions
set forth in this Agreement;

         WHEREAS, it is intended that, for federal income tax purposes, the
Merger shall qualify as a reorganization under the provisions of Section 368(a)
of the Internal Revenue Code of 1986, as amended, and the rules and regulations
promulgated thereunder (the "Code");

         WHEREAS, for financial accounting purposes, it is intended that the
Merger shall be accounted for as a "pooling-of-interests;" and

         WHEREAS, the Company, SBC and Merger Sub desire to make certain
representations, warranties, covenants and agreements in connection with this
Agreement.

         NOW, THEREFORE, in consideration of the premises, and of the
representations, warranties, covenants and agreements contained herein, the
parties hereto agree as follows:


<PAGE>


                                    ARTICLE I

                       The Merger; Closing; Effective Time

         1.1. The Merger. Upon the terms and subject to the conditions set forth
in this Agreement, at the Effective Time (as defined in Section 1.3) Merger Sub
shall be merged with and into the Company and the separate corporate existence
of Merger Sub shall thereupon cease. The Company shall be the surviving
corporation in the Merger (sometimes hereinafter referred to as the "Surviving
Corporation") and shall continue to be governed by the laws of the State of
Delaware, and the separate corporate existence of the Company with all its
rights, privileges, immunities, powers and franchises shall continue unaffected
by the Merger except as set forth in Article III hereof. The Merger shall have
the effects specified in the Delaware General Corporation Law, as amended (the
"DGCL").

         1.2. Closing. The closing of the Merger (the "Closing") shall take
place (i) at the offices of Sullivan & Cromwell, 125 Broad Street, New York, New
York 10004 at 9:00 A.M., local time, on the second business day after the date
on which the last to be fulfilled or waived of the conditions set forth in
Article VII (other than those conditions that by their nature are to be
satisfied at the Closing, but subject to the fulfillment or waiver of those
conditions) shall be satisfied or waived in accordance with this Agreement or
(ii) at such other place and time and/or on such other date as the Company and
SBC may agree in writing (the "Closing Date").

         1.3. Effective Time. Immediately following the Closing, the Company and
SBC will cause a Certificate of Merger (the "Certificate of Merger") to be
executed, acknowledged and filed with the Secretary of State of Delaware as
provided in Section 251 of the DGCL. The Merger shall become effective at the
time when the Certificate of Merger has been duly filed with the Secretary of
State of Delaware or such other time as shall be agreed upon by the parties and
set forth in the Certificate of Merger in accordance with the DGCL (the
"Effective Time").


                                      A-2


<PAGE>


                                   ARTICLE II

                    Certificate of Incorporation and By-Laws
                          of the Surviving Corporation

         2.1. The Certificate of Incorporation. The certificate of incorporation
of the Company as in effect immediately prior to the Effective Time shall be the
certificate of incorporation of the Surviving Corporation (the "Charter"), until
duly amended as provided therein or by applicable law, except that (i) Article
Fourth of the Charter shall be amended to read in its entirety as follows:
"FOURTH. The aggregate number of shares that the Corporation shall have the
authority to issue is 1,000 shares of Common Stock, par value $1.00 per share.";
(ii) Article Fifth of the Charter shall be deleted in its entirety and shall
read as follows: "FIFTH. Reserved."; (iii) Article Eighth, Section B of the
Charter shall be amended to read in its entirety as follows: "B. Number. The
number of directors, their terms and their manner of election shall be fixed by
or pursuant to the By-Laws of the Corporation."; (iv) Article Ninth of the
Charter shall be deleted in its entirety and shall read as follows: "NINTH.
Reserved." and (v) Article Tenth of the Charter shall be amended to read in its
entirety as follows: "TENTH. The Corporation reserves the right to amend, alter,
change or repeal any provision contained in this Certificate of Incorporation,
in any manner now or hereafter permitted or prescribed by statute."

         2.2. The By-Laws. The by-laws of Merger Sub in effect at the Effective
Time shall be the by-laws of the Surviving Corporation (the "By-Laws"), until
thereafter amended as provided therein or by applicable law.


                                   ARTICLE III

                             Officers and Directors

         3.1. Directors of Surviving Corporation. The directors of Merger Sub at
the Effective Time shall, from 


                                      A-3


<PAGE>

and after the Effective Time, be the directors of the Surviving Corporation
until their successors have been duly elected or appointed and qualified or
until their earlier death, resignation or removal in accordance with the Charter
and the By-Laws.

         3.2. Officers of Surviving Corporation. The officers of the Company at
the Effective Time shall, from and after the Effective Time, be the officers of
the Surviving Corporation until their successors have been duly elected or
appointed and qualified or until their earlier death, resignation or removal in
accordance with the Charter and the By-Laws.

         3.3. Election to SBC's Board of Directors. At the Effective Time of the
Merger, SBC shall increase the size of its Board of Directors in order to enable
up to five members of the Board of Directors of the Company to be members of the
SBC Board of Directors, which persons shall be selected by the SBC Board of
Directors in consultation with the Chief Executive Officer of the Company and
the Board of Directors of the Company (the "Director Designees"), and the SBC
Board of Directors shall appoint each of the Director Designees to the SBC Board
of Directors as of the Effective Time, with such Director Designees to be
divided as nearly evenly as is possible among the classes of directors of SBC.


                                   ARTICLE IV

                     Effect of the Merger on Capital Stock;
                            Exchange of Certificates

         4.1. Effect on Capital Stock. At the Effective Time, as a result of the
Merger and without any action on the part of the holder of any capital stock of
the Company:

              (a) Merger Consideration. Each share of Common Stock, $1.00 par 
value per share, of the Company (each a "Company Share" and together the
"Company Shares") issued and outstanding immediately prior to the Effective 


                                      A-4

<PAGE>


Time (other than Company Shares that are owned by SBC, Merger Sub or any other
direct or indirect subsidiary of SBC (collectively, the "SBC Companies") or
Company Shares that are owned by the Company or any direct or indirect
subsidiary of the Company and in each case not held on behalf of third parties
(collectively, "Excluded Company Shares")) shall be converted into and become
exchangeable for 1.316 (the "Exchange Ratio") shares of Common Stock, par value
$1.00 per share, of SBC ("SBC Common Stock"), subject to adjustment as provided
in Section 4.4 (the "Merger Consideration"). All references in this Agreement to
SBC Common Stock to be issued pursuant to the Merger shall be deemed to include
the corresponding rights ("SBC Rights") to purchase shares of SBC Participating
Preferred Stock pursuant to the SBC Rights Agreement (as defined in Section
5.1(b)(ii)), except where the context otherwise requires. At the Effective Time,
all Company Shares shall no longer be outstanding, shall be cancelled and
retired and shall cease to exist, and (A) each certificate(a "Certificate")
formerly representing any of such Company Shares (other than Excluded Company
Shares) and (B) each uncertificated Company Share (a "Registered Company Share")
registered to a holder on the stock transaction books of the Company (other than
Excluded Company Shares), shall thereafter represent only the right to the
Merger Consideration and the right, if any, to receive pursuant to Section
4.2(d) cash in lieu of fractional shares into which such Company Shares have
been converted pursuant to this Section 4.1(a) and any distribution or dividend
pursuant to Section 4.2(b), in each case without interest.

              (b) Cancellation of Shares. Each Excluded Company Share issued 
and outstanding immediately prior to the Effective Time shall, by virtue of the
Merger and without any action on the part of the holder thereof, no longer be
outstanding, shall be cancelled and retired without payment of any consideration
therefor and shall cease to exist.

              (c) Merger Sub. At the Effective Time, each share of Common 
Stock, par value $1.00 per share, of Merger Sub issued and outstanding 
immediately prior to the 


                                      A-5


<PAGE>


Effective Time shall be converted into one share of common stock of the
Surviving Corporation, and the Surviving Corporation shall be a wholly-owned
subsidiary of SBC.

         4.2. Exchange of Certificates for Shares.

              (a) Exchange Procedures. Promptly after the Effective Time, the
Surviving Corporation shall cause an exchange agent selected by SBC with the
Company's prior approval, which shall not be unreasonably withheld (the
"Exchange Agent") to mail to each holder of record as of the Effective Time of a
Certificate or Registered Company Shares, as the case may be, (other than
holders of a Certificate or Registered Company Shares in respect of Excluded
Company Shares) (i) (x) in the case of holders of Certificates, a letter of
transmittal specifying that delivery shall be effected, and that risk of loss
and title to the Certificates shall pass, only upon delivery of the Certificates
(or affidavits of loss in lieu thereof) to the Exchange Agent (the "Certificate
Letter of Transmittal") or (y) in the case of holders of Registered Company
Shares, a letter of transmittal specifying that the exchange for SBC Shares
shall occur only upon delivery of such letter of transmittal to the Exchange
Agent (the "Registered Letter of Transmittal"), each such letter of transmittal
to be in such form and have such other provisions as SBC and the Company may 
reasonably agree, and (ii) instructions for exchanging Certificates or
Registered Company Shares for (A) uncertificated shares of SBC Common Stock
registered on the stock transfer books of SBC in the name of such holder
("Registered SBC Shares") or, at the election of such holder, certificates
representing shares of SBC Common Stock and (B) any unpaid dividends and other
distributions and cash in lieu of fractional shares. Subject to Section 4.2(g),
upon (I) surrender of a Certificate for cancellation to the Exchange Agent
together with a Certificate Letter of Transmittal, duly executed, the holder of
such Certificate or (II) upon delivery of a Registered Letter of Transmittal,
duly executed, the holder of such Registered Company Shares, as the case may be,
shall be entitled to receive in exchange therefor (x) Registered SBC Shares or,
at the election of such holder, a certificate representing that number of whole


                                      A-6


<PAGE>


shares of SBC Common Stock that such holder is entitled to receive pursuant to
this Article IV, (y) a check in the amount (after giving effect to any required
tax withholdings) of (A) any cash in lieu of fractional shares determined in
accordance with Section 4.2(d) hereof plus (B) any cash dividends and any other
dividends or other distributions that such holder has the right to receive
pursuant to the provisions of this Article IV, and any Certificate so
surrendered and any Registered Company Share in respect of which a Registered
Letter of Transmittal is so delivered shall forthwith be cancelled. No interest
will be paid or accrued on any amount payable upon due surrender of any
Certificate or delivery of a duly executed Registered Letter of Transmittal, as
the case may be. In the event of a transfer of ownership of Company Shares that
is not registered in the transfer records of the Company, Registered SBC Shares
or a certificate representing the proper number of shares of SBC Common Stock,
as the case may be, together with a check for any cash to be paid upon due
surrender of the Certificate or upon the delivery to the Exchange Agent of the
duly executed Registered Letter of Transmittal and any other dividends or
distributions in respect thereof, may be issued and/or paid to such a transferee
if, in the case of holders of Certificates, the Certificate formerly
representing such Company Shares is presented to the Exchange Agent, and, in the
case of holders of Registered Company Shares, if the Registered Letter of
Transmittal is delivered to the Exchange Agent in either case accompanied by all
documents required to evidence and effect such transfer and to evidence that any
applicable stock transfer taxes have been paid. If any Registered SBC Shares or 
any certificate for shares of SBC Common Stock is to be issued in a name other 
than that in which the Certificate surrendered in exchange therefor or the 
Registered Company Shares exchanged therefor, as the case may be, is 
registered, it shall be a condition of such exchange that the Person (as defined
below) requesting such exchange shall pay any transfer or other taxes required
by reason of the issuance of Registered SBC Shares or a certificate for shares
of SBC Common Stock in a name other than that of the registered holder of the
Certificate surrendered or the Registered Company Shares exchanged, as 


                                      A-7



<PAGE>


the case may be, or shall establish to the satisfaction of SBC or the Exchange
Agent that such tax has been paid or is not applicable.

         For the purposes of this Agreement, the term "Person" shall mean any
individual, corporation (including not-for-profit), general or limited
partnership, limited liability company, joint venture, estate, trust,
association, organization, Governmental Entity (as defined in Section 5.1(d)(i))
or other entity of any kind or nature.

              (b) Distributions with Respect to Unexchanged Shares; Voting.

                 (i) Whenever a dividend or other distribution is declared by
SBC in respect of SBC Common Stock, the record date for which is at or after the
Effective Time, that declaration shall include dividends or other distributions
in respect of all shares of SBC Common Stock issuable pursuant to this
Agreement. No dividends or other distributions in respect of such SBC Common
Stock shall be paid to any holder of any unsurrendered Certificate or Registered
Company Shares for which a Registered Letter of Transmittal shall not have been
delivered, until such Certificate is surrendered for exchange or such Registered
Letter of Transmittal is delivered, as the case may be, in accordance with this
Article IV. Subject to the effect of applicable laws, following surrender of any
such Certificate or delivery of any such Registered Letter of Transmittal, as
the case may be, there shall be issued and/or paid to the holder of the
Registered SBC Shares or the certificates representing whole shares of SBC
Common Stock, as the case may be, issued in exchange therefor, without interest,
(A) at the time of such surrender or delivery, as the case may be, the dividends
or other distributions with a record date after the Effective Time and a payment
date on or prior to the date of issuance of such whole shares of SBC Common
Stock and not previously paid and (B) at the appropriate payment date, the
dividends or other distributions payable with respect to such whole shares of
SBC Common Stock with a record date after the Effective Time but with a payment
date subsequent to surrender or delivery, as the case may be.


                                      A-8


<PAGE>


For purposes of dividends or other distributions in respect of shares of SBC
Common Stock, all shares of SBC Common Stock to be issued pursuant to the Merger
shall be deemed issued and outstanding as of the Effective Time.

                   (ii) Registered holders of unsurrendered Certificates or
Registered Company Shares for which a duly executed Registered Letter of
Transmittal shall not have been delivered shall be entitled to vote after the
Effective Time at any meeting of SBC stockholders with a record date at or after
the Effective Time the number of whole shares of SBC Common Stock represented by
such Certificates or Registered Company Shares, as the case may be, regardless
of whether such holders have surrendered their Certificates or delivered duly
executed Registered Letters of Transmittal, as the case may be.

              (c) Transfers. After the Effective Time, there shall be no 
transfers on the stock transfer books of the Company of the Company Shares that
were outstanding immediately prior to the Effective Time.

              (d) Fractional Shares. Notwithstanding any other provision of 
this Agreement, no fractional shares of SBC Common Stock will be issued and any
holder of Company Shares entitled to receive a fractional share of SBC Common
Stock but for this Section 4.2(d) shall be entitled to receive an amount in cash
(without interest) determined by multiplying such fraction (rounded to the
nearest one-hundredth of a share) by the average of the closing price of a share
of SBC Common Stock, as reported in The Wall Street Journal, New York City
edition, on the trading day immediately prior to the Effective Time.

              (e) Termination of Exchange Period; Unclaimed Stock. Any shares 
of SBC Common Stock and any portion of the cash, dividends or other
distributions with respect to the SBC Common Stock deposited by SBC with the
Exchange Agent (including the proceeds of any investments thereof) that remain
unclaimed by the stockholders of the Company 180 days after the Effective Time
shall be paid to SBC. Any stockholders of the Company who have not 


                                      A-9


<PAGE>


theretofore complied with this Article IV shall thereafter look only to SBC for
payment of their shares of SBC Common Stock and any cash, dividends and other
distributions in respect thereof issuable and/or payable pursuant to Section
4.1, Section 4.2(b) and Section 4.2(d) upon due (i) surrender of (i) their
Certificates (or affidavits of loss in lieu thereof) or (ii) delivery of duly
executed Registered Letters of Transmittal, as the case may be, in each case
with respect to both clause (i) and (ii), without any interest thereon.
Notwithstanding the foregoing, none of SBC, the Surviving Corporation, the
Exchange Agent or any other Person shall be liable to any former holder of
Company Shares for any amount properly delivered to a public official pursuant
to applicable abandoned property, escheat or similar laws.

              (f) Lost, Stolen or Destroyed Certificates. In the event any
Certificate shall have been lost, stolen or destroyed, upon the making of an
affidavit of that fact by the Person claiming such Certificate to be lost,
stolen or destroyed and the posting by such Person of a bond in the form
customarily required by SBC as indemnity against any claim that may be made
against it with respect to such Certificate, SBC will issue the shares of SBC
Common Stock and the Exchange Agent will issue any cash, dividends and other
distributions in respect thereof issuable and/or payable in exchange for such
lost, stolen or destroyed Certificate pursuant to Section 4.1, Section 4.2(b)
and Section 4.2(d) upon due surrender of and deliverable in respect of the
Company Shares represented by such Certificate pursuant to this Agreement, in
each case, without interest.

              (g) Affiliates. Notwithstanding anything herein to the contrary,
Certificates surrendered for exchange, or Registered Company Shares to be
exchanged pursuant to a Registered Letter of Transmittal delivered, by any
"affiliate" (as determined pursuant to Section 6.7) of the Company shall not be
exchanged until SBC has received a written agreement from such Person as
provided in Section 6.7 hereof.


                                      A-10


<PAGE>


         4.3. Dissenters' Rights. In accordance with Section 262 of the DGCL, no
appraisal rights shall be available to holders of Company Shares in connection
with the Merger.

         4.4. Adjustments to Prevent Dilution. In the event that prior to the
Effective Time there is a change in the number of Company Shares or shares of
SBC Common Stock or securities convertible or exchangeable into or exercisable
for Company Shares or shares of SBC Common Stock issued and outstanding as a
result of a distribution, reclassification, stock split (including a reverse
split), stock dividend or distribution, or other similar transaction, the
Exchange Ratio shall be equitably adjusted to eliminate the effects of such
event.


                                    ARTICLE V

                         Representations and Warranties

         5.1. Representations and Warranties of the Company, SBC and Merger Sub.
Except as set forth in the corresponding sections or subsections of the
disclosure letter, dated the date hereof, delivered by the Company to SBC or by
SBC to the Company (each a "Disclosure Letter", and the "Company Disclosure
Letter" and the "SBC Disclosure Letter", respectively), as the case may be, the
Company (except for subparagraphs (b)(ii), (b)(iii), (c)(ii) and (p)(ii) below
and references in subparagraphs (a) and (e) below to documents made available by
SBC to the Company) hereby represents and warrants to SBC and Merger Sub, and
SBC (except for subparagraphs (b)(i), (c)(i), (d)(iii), the last sentence of
(f), (j), (o) and (p)(i) below and references in subparagraphs (a), (e) and
(h)(i) below to documents made available by the Company to SBC), on behalf of
itself and Merger Sub, hereby represents and warrants to the Company, that:

              (a) Organization, Good Standing and Qualification. Each of it and
its Subsidiaries is a corporation duly organized, validly existing and in good


                                      A-11


<PAGE>


standing under the laws of its respective jurisdiction of organization and has
all requisite corporate or similar power and authority to own and operate its
properties and assets and to carry on its business as presently conducted and is
qualified to do business and is in good standing as a foreign corporation in
each jurisdiction where the ownership or operation of its properties or conduct
of its business requires such qualification, except where the failure to be so
qualified or in good standing is not, when taken together with all other such
failures, reasonably likely to have a Material Adverse Effect (as defined below)
on it. It has made available to SBC, in the case of the Company, and to the
Company, in the case of SBC, a complete and correct copy of its certificate of
incorporation and by-laws, each as amended to date. Such certificates of
incorporation and by-laws as so made available are in full force and effect.

As used in this Agreement, (i) the term "Subsidiary" means, with respect to the
Company, SBC or Merger Sub, as the case may be, any entity, whether incorporated
or unincorporated, of which at least fifty percent of the securities or
ownership interests having by their terms ordinary voting power to elect at
least fifty percent of the Board of Directors or other persons performing
similar functions is directly or indirectly owned by such party or by one or
more of its respective Subsidiaries or by such party and any one or more of its
respective Subsidiaries, (ii) the term "Material Adverse Effect" means, with
respect to either SBC or the Company, as the case may be, a material adverse
effect, it being understood that materiality shall be determined by reference to
the trading market equity value of such Person prior to the consummation of the
Merger, other than effects resulting from the execution of this Agreement or the
announcement thereof or changes in (I) the telecommunications industry
generally, (II) the national economy generally or (A) with respect to SBC only,
the economy of Texas, Oklahoma, Missouri, Kansas, Arkansas, Nevada and
California, taken together, generally, or of France, Mexico and/or the Republic
of South Africa or (B) with respect to the Company only, the economies of
Illinois, Indiana, Michigan, Ohio and Wisconsin, taken together, generally, or
of Belgium, Denmark


                                      A-12


<PAGE>


and/or Hungary or (III) the securities markets generally, and (iii) reference to
"the other party" means, with respect to the Company, SBC and means, with
respect to SBC, the Company.

              (b) Capital Structure. (i) The authorized capital stock of the
Company consists of 2,400,000,000 Company Shares, of which 1,100,161,364 Company
Shares were issued and outstanding and 76,993,242 Company Shares were held in
treasury as of the close of business on April 30, 1998, 30,000,000 shares of
Preferred Stock, $1.00 par value per share (the "Company Preferred Shares"),
none of which were outstanding as of the close of business on May 8, 1998 and
30,000,000 shares of Preference Stock, $1.00 par value per share, (the "Company
Preference Shares"), none of which were outstanding as of the close of business
on May 8, 1998. All of the outstanding Company Shares have been duly authorized
and are validly issued, fully paid and nonassessable. Other than 12,000,000
Company Preference Shares, designated "Series A Junior Participating Preference
Stock", reserved for issuance pursuant to the Rights Agreement, dated as of
December 21, 1988, between the Company and American Transtech Inc., as Rights
Agent (the "Rights Agreement"), and Company Shares subject to issuance as set
forth below, the Company has no Company Shares, Company Preferred Shares or
Company Preference Shares reserved for or otherwise subject to issuance. As of
May 10, 1998, there were not more than 47,000,000 Company Shares that the
Company was obligated to issue pursuant to the Company Compensation and Benefit
Plans identified in Section 5.1(h) of the Company Disclosure Letter as being the
only Company Compensation and Benefit Plans pursuant to which Company Shares may
be issued (collectively the "Company Stock Plans"). Each of the outstanding
shares of capital stock or other securities of each of the Company's
Subsidiaries that constitute a "Significant Subsidiary" (as defined in Rule
1.02(w) of Regulation S-X promulgated pursuant to the Securities Exchange Act of
1934, as amended (the "Exchange Act"), is duly authorized, validly issued, fully
paid and nonassessable and owned by the Company or a direct or indirect
wholly-owned Subsidiary of the Company, free and clear of any lien, pledge,
security interest, claim 


                                      A-13


<PAGE>


or other encumbrance. Except as set forth above and for Company Shares and
options to purchase Company Shares which may be issued in accordance with
Section 6.1(a), there are no preemptive or other outstanding rights, options,
warrants, conversion rights, stock appreciation rights, redemption rights,
repurchase rights, agreements, arrangements or commitments to issue or sell any
shares of capital stock or other securities of the Company or any of its
Significant Subsidiaries or any securities or obligations convertible or
exchangeable into or exercisable for, or giving any Person a right to subscribe
for or acquire, any securities of the Company or any of its Significant
Subsidiaries, and no securities or obligations evidencing such rights are
authorized, issued or outstanding. The Company does not have outstanding any
bonds, debentures, notes or other obligations the holders of which have the
right to vote (or convertible into or exercisable for securities having the
right to vote) with the stockholders of the Company on any matter.

                   (ii) The authorized capital stock of SBC consists of 
7,000,000,000 shares of SBC Common Stock, of which 1,838,844,294 shares were
issued and outstanding and 26,060,210 shares were held in treasury as of the
close of business on April 30, 1998, and 10,000,000 shares of Preferred Stock,
par value $1.00 per share (the "SBC Preferred Shares"), none of which shares
were outstanding as of the close of business on May 8, 1998. All of the
outstanding shares of SBC Common Stock have been duly authorized and are validly
issued, fully paid and nonassessable. SBC has no shares of SBC Common Stock or
SBC Preferred Shares reserved for or subject to issuance except that SBC has
reserved no more than 10,000,000 SBC Preferred Shares for or subject to issuance
pursuant to the Rights Agreement, dated as of January 27, 1989, between SBC and
American Transtech, Inc., as Rights Agent, as amended by the Amendment of Rights
Agreement, dated as of August 5, 1992, between SBC and The Bank of New York, as
successor Rights Agent, and the Second Amendment of Rights Agreement, dated as
of June 15, 1994, between SBC and The Bank of New York, as successor Rights
Agent (as amended, the "SBC Rights Agreement"). As of May 10, 1998, there were
not more than 


                                      A-14


<PAGE>


92,000,000 shares of SBC Common Stock that SBC was obligated to issue pursuant
to (x) SBC's Senior Management Long Term Incentive Plan, Senior Management
Incentive Award Deferral Plan, Non-Employee Directors Stock and Deferral Plan,
Stock Savings Plan, 1994 Stock Option Plan, 1996 Stock and Incentive Plan, 1995
Management Stock Option Plan, Savings Plan and the Savings and Security Plan and
(y) Pacific Telesis Group's Supplemental Retirement and Savings Plan for
Salaried Employees, Supplemental Retirement and Savings Plan for Non-Salaried
Employees, Supplemental Retirement and Savings Plan for Salaried and
Non-Salaried Employees, Employee Stock Ownership Plan, Stock Option and Stock
Appreciation Rights Plan, Outside Directors Deferred Stock Unit Plan and
Restricted Stock Plan (collectively, the "SBC Stock Plans"). Each of the
outstanding shares of capital stock of each of SBC's Significant Subsidiaries is
duly authorized, validly issued, fully paid and nonassessable and owned by SBC
or a direct or indirect wholly-owned subsidiary of SBC, free and clear of any
lien, pledge, security interest, claim or other encumbrance. Except as set forth
above, there are no preemptive or other outstanding rights, options, warrants,
conversion rights, stock appreciation rights, redemption rights, repurchase
rights, agreements, arrangements or commitments to issue or to sell any shares
of capital stock or other securities of SBC or any of its Significant
Subsidiaries or any securities or obligations convertible or exchangeable into
or exercisable for, or giving any Person a right to subscribe for or acquire,
any securities of SBC or any of its Significant Subsidiaries, and no securities
or obligation evidencing such rights are authorized, issued or outstanding. SBC
does not have outstanding any bonds, debentures, notes or other obligations the
holders of which have the right to vote (or convertible into or exercisable for
securities having the right to vote) with the stockholders of SBC on any matter.

                   (iii) The authorized capital stock of Merger Sub consists of
1,000 shares of Common Stock, par value $1.00 per share, all of which are
validly issued and outstanding. All of the issued and outstanding capital stock
of Merger Sub is, and at the Effective Time will be, owned by SBC, and there are
(i) no other shares of capital


                                      A-15


<PAGE>


stock or other voting securities of Merger Sub, (ii) no securities of Merger Sub
convertible into or exchangeable for shares of capital stock or other voting
securities of Merger Sub and (iii) no options or other rights to acquire from
Merger Sub, and no obligations of Merger Sub to issue, any capital stock, other
voting securities or securities convertible into or exchangeable for capital
stock or other voting securities of Merger Sub. Merger Sub has not conducted any
business prior to the date hereof and has no, and prior to the Effective Time
will have no, assets, liabilities or obligations of any nature other than those
incident to its formation and pursuant to this Agreement and the Merger and the
other transactions contemplated by this Agreement.

              (c) Corporate Authority; Approval and Fairness. (i) The Company
has all requisite corporate power and authority and has taken all corporate
action necessary in order to execute, deliver and perform its obligations under
this Agreement and to consummate, subject only to adoption of this Agreement by
the holders of a majority of the outstanding Company Shares (the "Company
Requisite Vote") and the Company Required Consents (as defined in Section
5.1(d)), the Merger. This Agreement has been duly executed and delivered by the
Company and is a valid and binding agreement of the Company enforceable against
the Company in accordance with its terms, subject to bankruptcy, insolvency,
fraudulent transfer, reorganization, moratorium and similar laws of general
applicability relating to or affecting creditors' rights and to general equity
principles (the "Bankruptcy and Equity Exception"). The Board of Directors of
the Company (A) has unanimously approved this Agreement and the Merger and the
other transactions contemplated hereby and (B) has received the opinion of its
financial advisors, Goldman, Sachs & Co., in a customary form and to the effect
that the Merger Consideration to be received by the holders of the Company
Shares in the Merger is fair to such holders from a financial point of view.

                   (ii) SBC and Merger Sub each has all requisite corporate 
power and authority and each has taken all corporate action necessary in order 
to execute,


                                      A-16


<PAGE>


deliver and perform its obligations under this Agreement and to consummate,
subject only to the approval by the stockholders of SBC by a majority of votes
cast on the proposal to issue the shares of SBC Common Stock required to be
issued pursuant to Article IV; provided, that the total vote cast represents
over 50% of all of the outstanding shares of SBC Common Stock (the "SBC
Requisite Vote") and the SBC Required Consents (as defined in Section 5.1(d)),
the Merger. This Agreement has been duly executed and delivered by SBC and
Merger Sub and is a valid and binding agreement of SBC and Merger Sub,
enforceable against each of SBC and Merger Sub in accordance with its terms,
subject to the Bankruptcy and Equity Exception. SBC has received the opinion of
its financial advisors, Salomon Brothers Inc and Smith Barney Inc., in a
customary form and to the effect that the Exchange Ratio is fair to SBC from a
financial point of view. The shares of SBC Common Stock, when issued pursuant to
this Agreement, will be validly issued, fully paid and nonassessable, and no
stockholder of SBC will have any preemptive right of subscription or purchase in
respect thereof.

              (d) Governmental Filings; No Violations. (i) Other than the 
necessary filings, notices and/or approvals (A) pursuant to Section 1.3, (B)
under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the
"HSR Act"), the Exchange Act and the Securities Act of 1933, as amended (the
"Securities Act"), (C) to comply with state securities or "blue-sky" laws, (D)
if any, of the Federal Communications Commission ("FCC") pursuant to the
Communications Act of 1934, as amended, (E) if any, of the local, state and
foreign public utility commissions or similar local, state or foreign regulatory
bodies (each a "PUC") and the local, state and foreign Governmental Entities (as
defined below) identified in its respective Disclosure Letter pursuant to
applicable local, state or foreign laws regulating the telephone, mobile
cellular, paging, cable television or other telecommunications business
("Utilities Laws") and (F) if any, of the foreign regulatory bodies identified
in its Disclosure Letter pursuant to applicable foreign laws regulating actions
having the purpose or effect of


                                      A-17


<PAGE>


monopolization or restraint of trade (such filings, notices and/or approvals of
SBC being the "SBC Required Consents" and of the Company being the "Company
Required Consents"), no filings, notices and/or reports are required to be made
by it with, nor are any consents, registrations, approvals, permits or
authorizations required to be obtained by it from, any governmental or
regulatory authority, court, agency, commission, body or other governmental
entity ("Governmental Entity"), in connection with the execution and delivery of
this Agreement by it and the consummation by it of the Merger and the other
transactions contemplated hereby, except those that the failure to make or
obtain are not, individually or in the aggregate, reasonably likely to have a
Material Adverse Effect on it or prevent, materially delay or materially impair
its ability to consummate the transactions contemplated by this Agreement.

                   (ii) The execution, delivery and performance of this 
Agreement by it do not, and the consummation by it of the Merger and the other
transactions contemplated hereby will not, constitute or result in (A) a breach
or violation of, or a default under, its certificate of incorporation or by-laws
or the comparable governing instruments of any of its Significant Subsidiaries,
(B) a breach or violation of, or a default under, the acceleration of any
obligations or the creation of a lien, pledge, security interest or other
encumbrance on its assets or the assets of any of its Subsidiaries (with or
without notice, lapse of time or both) pursuant to, any agreement, lease,
contract, note, mortgage, indenture, arrangement or other obligation
("Contracts") binding upon it or any of its Subsidiaries or, assuming the
filings, notices and/or approvals referred to in Section 5.1(d)(i) are made or
obtained, any Law (as defined in Section 5.1(i)) or governmental or
non-governmental permit or license to which it or any of its Subsidiaries is
subject or (C) any change in the rights or obligations of any party under any of
its Contracts, except, in the case of clause (B) or (C) above, for any breach,
violation, default, acceleration, creation or change that, individually or in
the aggregate, is not reasonably likely to have a Material Adverse Effect on it
or prevent, materially delay or materially impair its ability


                                      A-18


<PAGE>


to consummate the transactions contemplated by this Agreement. The Company
Disclosure Letter, with respect to the Company, and the SBC Disclosure Letter,
with respect to SBC, sets forth a correct and complete list of Contracts of it
and its Subsidiaries pursuant to which consents or waivers are or may be
required prior to consummation of the transactions contemplated by this
Agreement other than those where the failure to obtain such consents or waivers
is not, individually or in the aggregate, reasonably likely to have a Material
Adverse Effect on it or prevent or materially impair its ability to consummate
the transactions contemplated by this Agreement.

              (e) Reports; Financial Statements. It has made available to the
other party, each registration statement, report, proxy statement or information
statement prepared by it since December 31, 1997 (the "Audit Date"), including
its Annual Report on Form 10-K for the year ended December 31, 1997 in the form
(including exhibits, annexes and any amendments thereto) filed with the
Securities and Exchange Commission (the "SEC") (collectively, including any such
reports filed subsequent to the date hereof, its "Reports"). As of their
respective dates, its Reports did not contain any untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements made therein, in light of the circumstances in which they
were made, not misleading. Each of the consolidated balance sheets included in
or incorporated by reference into its Reports (including the related notes and
schedules) fairly presents the consolidated financial position of it and its
Subsidiaries as of its date and each of the consolidated statements of income
and of cash flows included in or incorporated by reference into its Reports
(including any related notes and schedules) fairly presents the consolidated
results of operations, retained earnings and cash flows, as the case may be, of
it and its Subsidiaries for the periods set forth therein (subject, in the case
of unaudited statements, to notes and normal year-end audit adjustments that
will not be material in amount or effect), in each case in accordance with
United States generally accepted accounting principles ("GAAP") consistently
applied during the periods involved,


                                      A-19


<PAGE>


except as may be noted therein. Since the Audit Date, it and each Subsidiary
required to make filings under Utilities Laws has filed with the applicable PUCs
or the FCC, as the case may be, all material forms, statements, reports and
documents (including exhibits, annexes and any amendments thereto) required to
be filed by them, and each such filing complied in all material respects with
all applicable laws, rules and regulations, other than such failures to file and
non-compliance that are, individually or in the aggregate, not reasonably likely
to have a Material Adverse Effect on it or prevent or materially impair its
ability to consummate the transactions contemplated by this Agreement. To its
knowledge, as of the date hereof, no Person or "group" "beneficially owns" 5% or
more of its outstanding voting securities, with the terms "beneficially owns"
and "group" having the meanings ascribed to them under Rule 13d-3 and Rule 13d-5
under the Exchange Act.

         (f) Absence of Certain Changes. Except as disclosed in its Reports
filed prior to the date hereof or as expressly contemplated or permitted by this
Agreement, since the Audit Date it and its Subsidiaries have conducted their
respective businesses only in, and have not engaged in any material transaction
other than according to, the ordinary and usual course of such businesses and
there has not been (i)any change in the financial condition, properties,
prospects, business or results of operations of it and its Subsidiaries, except
those changes that are not, individually or in the aggregate, reasonably likely
to have a Material Adverse Effect on it; (ii) any damage, destruction or other
casualty loss with respect to any asset or property owned, leased or otherwise
used by it or any of its Subsidiaries, whether or not covered by insurance,
which damage, destruction or loss is reasonably likely, individually or in the
aggregate, to have a Material Adverse Effect on it; (iii) any declaration,
setting aside or payment of any dividend or other distribution in respect of its
capital stock, except publicly announced regular quarterly cash dividends on its
common stock and, in the case of SBC, any dividends in capital stock of SBC
which are simultaneously taken into account in an adjustment to the Exchange
Ratio pursuant to Section 4.4; or (iv) any change 


                                      A-20


<PAGE>


by it in accounting principles, practices or methods, except as required by
GAAP. Since the Audit Date, except as provided for herein, in the Company
Disclosure Letter, as disclosed in the Reports filed by the Company prior to the
date hereof or permitted hereby, there has not been any increase in the salary,
wage, bonus or other compensation payable or that could become payable by the
Company or any of its Subsidiaries to directors, officers or key employees or
any amendment of any of the Company Compensation and Benefit Plans (as defined
in Section 5.1(h)(i)) other than increases or amendments in the ordinary course.

              (g) Litigation and Liabilities. Except as disclosed in its 
Reports filed prior to the date hereof, there are no (i) civil, criminal or
administrative actions, suits, claims, hearings, investigations or proceedings
pending or, to the actual knowledge of its executive officers, threatened in
writing against it or any of its Affiliates (as defined in Rule 12b-2 under the
Exchange Act) or (ii) obligations or liabilities, whether or not accrued,
contingent or otherwise and whether or not required to be disclosed, including
those relating to matters involving any Environmental Law (as defined in Section
5.1(k)), or any other facts or circumstances, in either such case, of which its
executive officers have actual knowledge that are reasonably likely to result in
any claims against or obligations or liabilities of it or any of its Affiliates,
except for those that are not, individually or in the aggregate, reasonably
likely to have a Material Adverse Effect on it or prevent, materially delay or
materially impair its ability to consummate the transactions contemplated by
this Agreement; provided, however, that for purposes of this subsection (g) no
action, suit, claim, hearing, investigation or proceeding arising after the date
hereof shall be deemed to have any adverse effect if and to the extent such
actions, suits, claims, hearings, investigations or proceedings are based on
this Agreement or the transactions contemplated hereby.

              (h) Employee Benefits.


                                      A-21


<PAGE>


                   (i) A copy of each bonus, deferred compensation, pension,
retirement, profit-sharing, thrift, savings, employee stock ownership, stock
bonus, stock purchase, restricted stock, stock option, employment, termination,
severance, compensation, medical, health or other plan, agreement, policy or
arrangement that covers employees, directors, former employees or former
directors of the Company and its Subsidiaries (the "Company Compensation and
Benefit Plans") and any trust agreements or insurance contracts forming a part
of such Company Compensation and Benefit Plans has been made available by the
Company to SBC prior to the date hereof and each such Company Compensation and
Benefit Plan is listed in Section 5.1(h) of the Company Disclosure Letter.

                   (ii) In the case of the Company, each of the Company
Compensation and Benefit Plans or, in the case of SBC, each bonus, deferred
compensation, pension, retirement, profit-sharing, thrift, savings, employee
stock ownership, stock bonus, stock purchase, restricted stock, stock option,
employment, termination, severance, compensation, medical, health or other plan,
agreement, policy or arrangement that covers employees, directors, former
employees or former directors of SBC and SBC's Subsidiaries (together with the
Company Compensation and Benefit Plans, its "Compensation and Benefit Plans") is
in substantial compliance with all applicable law, including the Code and the
Employee Retirement Income Security Act of 1974, as amended ("ERISA"). Each of
its Compensation and Benefit Plans that is an "employee pension benefit plan"
within the meaning of Section 3(2) of ERISA (a "Pension Plan") and that is
intended to be qualified under Section 401(a) of the Code has received a
favorable determination letter from the Internal Revenue Service (the "IRS")
with respect to "TRA" (as such term is defined in Section 1 of Rev. Proc 93-39),
and it is not aware of any circumstances likely to result in revocation of any
such favorable determination letter. There is no pending or, to the actual
knowledge of its executive officers, threatened in writing material litigation
relating to its Compensation and Benefit Plans. Neither it nor any Subsidiary
has engaged in a transaction with respect to any of its Compensation and


                                      A-22


<PAGE>


Benefit Plans that, assuming the taxable period of such transaction expired as
of the date hereof, would subject it or any of its Subsidiaries to a material
tax or penalty imposed by either Section 4975 of the Code or Section 502 of
ERISA.

(iii) As of the date hereof, no liability under Subtitle C or D of Title IV of
ERISA (other than the payment of prospective premium amounts to the Pension
Benefit Guaranty Corporation in the normal course) has been or is expected to be
incurred by it or any Subsidiary with respect to any ongoing, frozen or
terminated "single-employer plan", within the meaning of Section 4001(a)(15) of
ERISA, currently or formerly maintained by any of them, or the single-employer
plan of any entity which is considered one employer with it under Section 4001
of ERISA or Section 414 of the Code (its "ERISA Affiliate") (each such
single-employer plan, its "ERISA Affiliate Plan"). It and its Subsidiaries and
ERISA Affiliates have not contributed, or been obligated to contribute, to a
multiemployer plan under Subtitle E of Title IV of ERISA at any time since
September 26, 1980. No notice of a "reportable event", within the meaning of
Section 4043 of ERISA for which the 30-day reporting requirement has not been
waived, has been required to be filed for any of its Pension Plans or any of its
ERISA Affiliate Plans within the 12-month period ending on the date hereof or
will be required to be filed in connection with the transactions contemplated by
this Agreement.

                   (iv) All contributions required to be made under the terms 
of any of its Compensation and Benefit Plans as of the date hereof have been
timely made or have been reflected on the most recent consolidated balance sheet
filed or incorporated by reference in its Reports prior to the date hereof.
Neither any of its Pension Plans nor any of any of its ERISA Affiliate Plans has
an "accumulated funding deficiency" (whether or not waived) within the meaning
of Section 412 of the Code or Section 302 of ERISA. Neither it nor its
Subsidiaries has provided, or is required to provide, security to any of its
Pension Plans


                                      A-23


<PAGE>


or to any of its ERISA Affiliate Plans pursuant to Section 401(a)(29) of the
Code.

                   (v) Under each of its Pension Plans which is a single-
employer plan and each of its ERISA Affiliate Plans, as of the last day of the
most recent plan year ended prior to the date hereof, the actuarially determined
present value of all "benefit liabilities", within the meaning of Section
4001(a)(16) of ERISA (as determined on the basis of the actuarial assumptions
contained in such Pension Plan's or ERISA Affiliate Plan's most recent actuarial
valuation), did not exceed the then current value of the assets of such Pension
Plan or ERISA Affiliate Plan, and there has been no material change in the
financial condition of such Pension Plan or ERISA Affiliate Plan since the last
day of the most recent plan year.

                   (vi) Neither it nor its Subsidiaries have any obligations 
for retiree health and life benefits under any of its Compensation and Benefit
Plans, except as set forth in its Reports filed prior to the date hereof or as
required by applicable law.

                   (vii) None of the consummation of the Merger and the other 
transactions contemplated by this Agreement, in the case of SBC and the Company,
the adoption of this Agreement by the stockholders of the Company, in the case
of the Company, the approval by the stockholders of SBC of the issuance of the
shares of SBC Common Stock required to be issued pursuant to Article IV, in the
case of SBC, shall (x) entitle any of their respective employees or directors or
any employees of their respective Subsidiaries to severance pay, directly or
indirectly, upon termination of employment, (y) accelerate the time of funding
(whether through a grantor trust or otherwise), payment or vesting or trigger
any payment of compensation or benefits under, increase the amount payable or
trigger any other material obligation pursuant to, any of their respective
Compensation and Benefit Plans or (z) result in any breach or violation of, or a
default under, any of their respective Compensation and Benefit Plans.


                                      A-24


<PAGE>


                   (i) Compliance with Laws. Except as set forth in its Reports
filed prior to the date hereof, the businesses of each of it and its
Subsidiaries have not been, and are not being, conducted in violation of any
law, statute, ordinance, regulation, judgment, order, decree, injunction,
arbitration award, license, authorization, opinion, agency requirement or permit
of any Governmental Entity or common law (collectively, "Laws"), except for
violations or possible violations that are not, individually or in the
aggregate, reasonably likely to have a Material Adverse Effect on it or prevent,
materially delay or materially impair its ability to consummate the transactions
contemplated by this Agreement. Except as set forth in its Reports filed prior
to the date hereof, no investigation or review by any Governmental Entity with
respect to it or any of its Subsidiaries is pending or, to the actual knowledge
of its executive officers, threatened, nor has any Governmental Entity indicated
an intention to conduct the same, except for those the outcome of which are not,
individually or in the aggregate, reasonably likely to have a Material Adverse
Effect on it or prevent, materially delay or materially impair its ability to
consummate the transactions contemplated by this Agreement. To the actual
knowledge of its executive officers, no material change is required in its or
any of its Subsidiaries' processes, properties or procedures in connection with
any such Laws, and it has not received any notice or communication of any
material noncompliance with any such Laws that has not been cured as of the date
hereof, except for such changes and noncompliance that are not, individually or
in the aggregate, reasonably likely to have a Material Adverse Effect on it or
prevent, materially delay or materially impair its ability to consummate the
transactions contemplated by this Agreement. Each of it and its Subsidiaries has
all permits, licenses, franchises, variances, exemptions, orders and other
governmental authorizations, consents and approvals (collectively, "Permits"),
necessary to conduct their business as presently conducted, except for those the
absence of which are not, individually or in the aggregate, reasonably likely to
have a Material Adverse Effect on it or prevent, materially delay


                                      A-25


<PAGE>


or materially impair its ability to consummate the transactions contemplated by
this Agreement.

              (j) Takeover Statutes. The Board of Directors of the Company has
taken all appropriate and necessary actions such that SBC will not be prohibited
from entering into a "business combination" with the Company as an "interested
stockholder" (in each case as such term is used in Section 203 of the DGCL) as a
result of the execution and delivery of this Agreement or the consummation of
the transactions contemplated hereby. To the best knowledge of the Company, no
other "fair price," "moratorium," "control share acquisition" or other similar
anti-takeover statute or regulation (each a "Takeover Statute") as in effect on
the date hereof is applicable to the Company, the Company Shares, the Merger or
the other transactions contemplated by this Agreement. No anti-takeover
provision contained in the Company's certificate of incorporation, including
Article Ninth thereof, or its by-laws is, or at the Effective Time will be,
applicable to the Company, the Company Shares, the Merger or the other
transactions contemplated by this Agreement.

              (k) Environmental Matters. Except as disclosed in its Reports
filed prior to the date hereof and except for such matters that, alone or in the
aggregate, are not reasonably likely to have a Material Adverse Effect on it:
(i) each of it and its Subsidiaries has complied with all applicable
Environmental Laws (as defined below); (ii) the properties currently owned or
operated by it or any of its Subsidiaries (including soils, groundwater, surface
water, buildings or other structures) are not contaminated with any Hazardous
Substances (as defined below); (iii) the properties formerly owned or operated
by it or any of its Subsidiaries were not contaminated with Hazardous Substances
during the period of ownership or operation by it or any of its Subsidiaries;
(iv) neither it nor any of its Subsidiaries is subject to liability for any
Hazardous Substance disposal or contamination on any third party property; (v)
neither it nor any Subsidiary has been associated with any release or threat of
release of any Hazardous Substance; (vi) neither it nor any Subsidiary has


                                      A-26


<PAGE>


received any notice, demand, letter, claim or request for information alleging
that it or any of its Subsidiaries may be in violation of or liable under any
Environmental Law (including any claims relating to electromagnetic fields or
microwave transmissions); (vii) neither it nor any of its Subsidiaries is
subject to any orders, decrees, injunctions or other arrangements with any
Governmental Entity or is subject to any indemnity or other agreement with any
third party relating to liability under any Environmental Law or relating to
Hazardous Substances; and (viii) there are no circumstances or conditions
involving it or any of its Subsidiaries that could reasonably be expected to
result in any claims, liability, investigations, costs or restrictions on the
ownership, use, or transfer of any of its properties pursuant to any
Environmental Law.

         As used herein, the term "Environmental Law" means any Law relating to:
(A) the protection, investigation or restoration of the environment, health,
safety, or natural resources, (B) the handling, use, presence, disposal, release
or threatened release of any Hazardous Substance or (C) noise, odor, wetlands,
pollution, contamination or any injury or threat of injury to persons or
property in connection with any Hazardous Substance.

         As used herein, the term "Hazardous Substance" means any substance that
is: listed, classified or regulated pursuant to any Environmental Law, including
any petroleum product or by-product, asbestos-containing material,
lead-containing paint or plumbing, polychlorinated biphenyls, radioactive
materials or radon.

              (l) Accounting and Tax Matters. As of the date hereof, neither it
nor any of its affiliates (as determined in accordance with Section 6.7) has
taken or agreed to take any action, nor do its executive officers have any
actual knowledge of any fact or circumstance, that, to their actual knowledge,
would prevent SBC from accounting for the business combination to be effected by
the Merger as a "pooling-of-interests" or prevent the Merger and the other
transactions contemplated by this Agreement from qualifying


                                      A-27


<PAGE>


as a "reorganization" within the meaning of Section 368(a) of the Code.

              (m) Taxes. It and each of its Subsidiaries have prepared in good
faith and duly and timely filed (taking into account any extension of time
within which to file) all material Tax Returns (as defined below) required to be
filed by any of them and all such filed tax returns are complete and accurate in
all material respects and: (i) it and each of its Subsidiaries have paid all
Taxes (as defined below) that are shown as due on such filed Tax Returns or that
it or any of its Subsidiaries is obligated to withhold from amounts owing to any
employee, creditor or third party, except with respect to matters contested in
good faith or for such amounts that, alone or in the aggregate, are not
reasonably likely to have a Material Adverse Effect on it; (ii) as of the date
hereof, there are not pending or, to the actual knowledge of its executive
officers threatened in writing, any audits, examinations, investigations or
other proceedings in respect of Taxes or Tax matters; and (iii) there are not,
to the actual knowledge of its executive officers, any unresolved questions or
claims concerning its or any of its Subsidiaries' Tax liability that are
reasonably likely to have a Material Adverse Effect on it. Neither it nor any of
its Subsidiaries has any liability with respect to income, franchise or similar
Taxes in excess of the amounts accrued in respect thereof that are reflected in
the financial statements included in its Reports, except such excess liabilities
as are not, individually or in the aggregate, reasonably likely to have a
Material Adverse Effect on it. No payments to be made to any of the officers and
employees of it or its Subsidiaries will as a result of consummation of the
Merger be subject to the deduction limitations under Section 280G of the Code.

         As used in this Agreement, (i) the term "Tax" (including, with
correlative meaning, the terms "Taxes", and "Taxable") includes all federal,
state, local and foreign income, profits, franchise, gross receipts,
environmental, customs duty, capital stock, severance, stamp, payroll, sales,
employment, unemployment, disability, use, property, 


                                      A-28


<PAGE>


withholding, excise, production, value added, occupancy and other taxes, duties
or assessments of any nature whatsoever, together with all interest, penalties
and additions imposed with respect to such amounts and any interest in respect
of such penalties and additions, and (ii) the term "Tax Return" includes all
returns and reports (including elections, declarations, disclosures, schedules,
estimates and information returns) required to be supplied to a Tax authority
relating to Taxes.

              (n) Labor Matters. Neither it nor any of its Subsidiaries is the
subject of any material proceeding asserting that it or any of its Subsidiaries
has committed an unfair labor practice or is seeking to compel it to bargain
with any labor union or labor organization nor is there pending or, to the
actual knowledge of its executive officers, threatened in writing, nor has there
been for the past five years, any labor strike, dispute, walkout, work stoppage,
slow-down or lockout involving it or any of its Subsidiaries, except in each
case as is not, individually or in the aggregate, reasonably likely to have a
Material Adverse Effect on it.

              (o) Rights Agreement. (i) The Company has adopted an amendment to
the Rights Agreement (the "Rights Amendment") with the effect that neither SBC
nor Merger Sub shall be deemed to be an Acquiring Person (as such term is
defined in the Rights Agreement) and the Distribution Date (as defined in the
Rights Agreement) shall not be deemed to occur and that the Rights will not
separate from the Company Shares, as a result of entering into this Agreement or
consummating the Merger and/or the other transactions contemplated hereby.

                   (ii) The Company has taken all necessary action with respect
to all of the outstanding Rights (as defined in the Rights Agreement) so that,
as of immediately prior to the Effective Time, as a result of entering into this
Agreement or consummating the Merger and/or the other transactions contemplated
by this Agreement, (A) neither the Company nor SBC will have any obligations
under the Rights or the Rights Agreement and


                                      A-29


<PAGE>


(B) the holders of the Rights will have no rights under the Rights or the Rights
Agreement.

              (p) Brokers and Finders. Neither it nor any of its officers, 
directors or employees has employed any broker or finder or incurred any
liability for any brokerage fees, commissions or finders, fees in connection
with the Merger or the other transactions contemplated in this Agreement except
that (i) the Company has employed Goldman, Sachs & Co. as its financial advisor,
the arrangements with which have been disclosed to SBC prior to the date hereof,
and (ii) SBC and Merger Sub have employed Salomon Brothers Inc and Smith Barney
Inc. as their financial advisor, the arrangements with which have been disclosed
to the Company prior to the date hereof.


                                   ARTICLE VI

                                    Covenants

         6.1. Interim Operations. (a) The Company covenants and agrees as to
itself and its Subsidiaries that, after the date hereof and prior to the
Effective Time (unless SBC shall otherwise approve in writing, which approval
shall not be unreasonably withheld or delayed, and except as otherwise expressly
contemplated by this Agreement, disclosed in the Company Disclosure Letter or
required by applicable Law):

                   (i) the business of it and its Subsidiaries shall be
conducted in the ordinary and usual course and, to the extent consistent
therewith, it and its Subsidiaries shall use all reasonable best efforts to
preserve its business organization intact and maintain its existing relations
and goodwill with customers, suppliers, regulators, distributors, creditors,
lessors, employees and business associates;

                   (ii) it shall not (A) amend its certificate of incorporation
or by-laws or amend, modify or terminate the Rights Agreement; provided,
however, that


                                      A-30


<PAGE>


nothing in this Agreement shall prevent the Company from reducing below 20% the
beneficial ownership threshold in the definition of an Acquiring Person (as
defined in the Rights Agreement) or extending the Final Expiration Date of the
Rights Agreement (as defined therein) or adopting a new rights agreement having
substantially similar terms as the Rights Agreement and not inconsistent with
(x) this proviso, (y)Section 5.1(o) (assuming references therein are to such a
new rights agreement) or (z) the transactions contemplated by this Agreement;
(B) split, combine, subdivide or reclassify its outstanding shares of capital
stock; (C) declare, set aside or pay any dividend or distribution payable in
cash, stock or property in respect of any capital stock, other than regular
quarterly cash dividends in amounts consistent with its past practice or rights
to purchase Company Shares or Company Preference Shares pursuant to any
successor agreement to the Rights Agreement, adopted in accordance with the
terms of this Agreement; or (D) repurchase, redeem or otherwise acquire or
permit any of its Subsidiaries to purchase or otherwise acquire, except in open
market transactions in connection with the Company Stock Plans, any shares of
its capital stock or any securities convertible into or exchangeable or
exercisable for any shares of its capital stock, but subject to the Company's
obligations under subparagraph (iii) below.

                   (iii) neither it nor any of its Subsidiaries shall knowingly
take any action that would prevent the Merger from qualifying for "pooling of
interests" accounting treatment or as a "reorganization" within the meaning of
Section 368(a) of the Code or that would cause any of its representations and
warranties herein to become untrue in any material respect;

                   (iv) neither it nor any of its Subsidiaries shall terminate,
establish, adopt, enter into, make any new grants or awards of stock-based
compensation or other benefits under, amend or otherwise modify, any Company
Compensation and Benefit Plans or increase the salary, wage, bonus or other
compensation of any directors, officers or key employees except (A) for grants
or awards to directors, officers and employees of it or its Subsidiaries under


                                      A-31


<PAGE>


existing Company Compensation and Benefit Plans in such amounts and on such
terms as are consistent with past practice, (B) in the normal and usual course
of business (which shall include normal periodic performance reviews and related
Company Compensation and Benefit Plan increases and the provision of individual
Company Compensation and Benefit Plans consistent with past practice for
promoted or newly hired officers and employees and the adoption of Company
Compensation and Benefit Plans for employees of new Subsidiaries in amounts and
on terms consistent with past practice); provided, that in no event shall it
institute a broad based change in compensation, unless it shall have used its
reasonable best efforts to provide SBC with prior notice of any such change or,
if the Company was unable to provide such prior notice, the Company shall
provide SBC with notice as soon as practicable following any such change, or (C)
for actions necessary to satisfy existing contractual obligations under Company
Compensation and Benefit Plans existing as of the date hereof;

                   (v) neither it nor any of its Subsidiaries shall issue any
Company Preferred Shares or Company Preference Shares or incur any indebtedness
for borrowed money or guarantee any such indebtedness if it should reasonably
anticipate that after such incurrence any of its or any of its Subsidiaries'
outstanding senior indebtedness would be rated A or lower by Standard & Poor's;

                   (vi) neither it nor any of its Subsidiaries shall make any
capital expenditures in any period of twelve consecutive months following the
date hereof in an aggregate amount in excess of 150% of the aggregate amount
reflected in the Company's capital expenditure budget for such year, a copy of
which has been provided to SBC;

                   (vii) neither it nor any of its Subsidiaries shall transfer,
lease, license, sell, mortgage, pledge, encumber or otherwise dispose of any of
its or its Subsidiaries property or assets (including capital stock of any of
its Subsidiaries) with a fair market value in excess of $1 billion in the
aggregate in any period of twelve


                                      A-32


<PAGE>


consecutive months following the date hereof except for transfers, leases,
licenses, sales, mortgages, pledges, encumbrances, or other dispositions in the
ordinary course of business consistent with past practice;

                   (viii) neither it nor any of its Subsidiaries shall issue,
deliver, sell, or encumber shares of any class of its common stock or any
securities convertible into, or any rights, warrants or options to acquire, any
such shares except, (A) any such shares issued pursuant to options and other
awards outstanding on the date hereof under the Company Stock Plans, awards of
options and other awards granted hereafter under the Company Stock Plans in
accordance with this Agreement and shares issuable pursuant to such awards, and
(B) up to an aggregate amount of $3.6 billion of such shares, securities,
rights, warrants or options (valued at their fair market value as of the date of
the agreement to make such acquisition) in any period of twelve consecutive
months following the date hereof to fund, in whole or in part, the cost of any
acquisition or acquisitions permitted under clause (ix) below following
reasonable notice to SBC of its intention to take such action;

                   (ix) neither it nor any of its Subsidiaries shall spend in
excess of $3.6 billion in the aggregate in any period of twelve consecutive
months following the date hereof to acquire any business, whether by merger,
consolidation, purchase of property or assets or otherwise (valuing any non-cash
consideration at its fair market value as of the date of the agreement for such
acquisition); provided, that no such acquisition would prevent, materially delay
or materially impair its ability to consummate the transactions contemplated by
this Agreement. Notwithstanding the foregoing, neither it nor any of its
Subsidiaries shall acquire any business the acquisition of which would subject
SBC and its Subsidiaries following the consummation of the Merger to any
Commercial Mobile Radio Service spectrum aggregation limit restriction pursuant
to the provisions of 47 C.F.R. Section 20.6 or place SBC and its Subsidiaries
following the consummation of the Merger in violation of the Cellular Cross
Ownership


                                      A-33


<PAGE>


limits contained in 47 C.F.R. Section 22.942. For purposes of this
clause (ix), the amount spent with respect to any acquisition shall be deemed to
include the aggregate amount of capital expenditures that the Company is
obligated to make at any time or plans to make as a result of such acquisition
within two years after the date of acquisition;

                   (x) neither it nor its Subsidiaries shall enter into any
business other than the telecommunications business and those businesses
traditionally associated with the telecommunications business; and

                   (xi) neither it nor any of its Subsidiaries shall authorize
or enter into any agreement to do any of the foregoing.

              (b) SBC covenants and agrees as to itself and its Subsidiaries
that after the date hereof and prior to the Effective Time (unless the Company
shall otherwise approve in writing, which approval shall not be unreasonably
withheld or delayed, and except as otherwise expressly contemplated by this
Agreement, disclosed in the SBC Disclosure Letter or required by applicable
Law):

                   (i) the business of it and its Subsidiaries shall be
conducted in the ordinary and usual course and, to the extent consistent
therewith, it and its Subsidiaries shall use all reasonable best efforts to 
preserve its business organization intact and maintain its existing relations
and goodwill with customers, suppliers, regulators, distributors, creditors,
lessors, employees and business associates;

                   (ii) it shall not (A) amend its certificate of incorporation
or by-laws in any manner that would prohibit or hinder, impede or delay in any
material respect the Merger or the consummation of the transactions contemplated
hereby, provided that any amendment to its certificate of incorporation to
increase the authorized number of shares of any class or series of the capital
stock of SBC shall in no way be restricted by the foregoing; (B)


                                      A-34


<PAGE>


declare, set aside or pay any dividend or other distribution payable in cash or
property (other than SBC Common Stock or rights to purchase SBC Common Stock or
SBC Preferred Stock pursuant to any successor agreement to the SBC Rights
Agreement) in respect of any capital stock, other than per share regular
quarterly cash dividends in amounts consistent with its past practice; or (C)
repurchase, redeem or otherwise acquire, or permit any of its Subsidiaries to
purchase or otherwise acquire, except in open market transactions in connection
with the SBC Stock Plans, any shares of its capital stock or any securities
convertible into or exchangeable for any shares of its capital stock, but
subject to SBC's obligations under subparagraph (iii) below;

                   (iii) neither it nor any of its Subsidiaries shall knowingly
take any action that would prevent the Merger from qualifying for
"pooling-of-interests" accounting treatment or as a tax-free "reorganization"
within the meaning of Section 368(a) of the Code or that would cause any of its
representations and warranties herein to become untrue in any material respect;

                   (iv) neither it nor any of its Subsidiaries shall issue any
SBC Preferred Shares or incur any indebtedness for borrowed money or guarantee
any such indebtedness if it should reasonably anticipate that after such
incurrence any of its or any of its Subsidiaries' outstanding senior
indebtedness would be rated A or lower by Standard & Poor's;

                   (v) neither it nor any of its Subsidiaries shall make any
capital expenditures in any period of twelve consecutive months following the
date hereof in an aggregate amount in excess of 150% of the aggregate amount of
capital expenditures reflected in its capital expenditure budget for such year,
a copy of which has been provided to the Company;

                   (vi) neither it nor any of its Subsidiaries shall transfer,
lease, license, sell, mortgage, pledge, encumber or otherwise dispose of any of
its or its


                                      A-35


<PAGE>


Subsidiaries' property or assets (including capital stock of any of its
Subsidiaries) with a fair market value in excess of $1.5 billion in the
aggregate in any period of twelve consecutive months following the date hereof
except for transfers, leases, licenses, sales, mortgages, pledges, encumbrances,
or other dispositions in the ordinary course of business consistent with past
practice;

                   (vii) neither it nor any of its Subsidiaries shall issue,
deliver, sell or encumber shares of any class of its common stock or any
securities convertible into, or any rights, warrants or options to acquire, any
such shares, except (A) any such shares issued pursuant to options and other
awards outstanding on the date hereof under the SBC Stock Plans, awards of
options and other awards granted hereafter under the SBC Stock Plans and shares
issuable pursuant to such awards, (B) up to an aggregate amount of $4.8 billion
of such shares, securities, rights, warrants or options (valued at their fair
market value as of the date of the agreement to make such acquisition) in any
period of twelve consecutive months following the date hereof to fund, in whole
or in part, the cost of any acquisition or acquisitions permitted under clause
(viii) below, following reasonable notice to the Company of its intention to
take such action, and (C) pursuant to the terms of the Agreement and Plan of
Merger dated as of January 4, 1998, by and among Southern New England
Telecommunications Corporation ("SNET"), SBC and SBC(CT) Sub, Inc. a Connecticut
corporation and a wholly-owned subsidiary of SBC (the "SNET Agreement"), which
issuances of SBC capital stock shall not be included in calculating the $4.8
billion of permissible issuances, deliveries, sales or encumbrances, or require
notice to the Company, pursuant to clause (B) above;

                   (viii) neither it nor any of its Subsidiaries shall spend in
excess of $4.8 billion in the aggregate in any period of twelve consecutive
months following the date hereof to acquire any business, whether by merger,
consolidation, purchase of property or assets or otherwise (valuing any non-cash
consideration at its fair market value as of the date of the agreement for such


                                      A-36


<PAGE>


acquisition); provided, however, that no such acquisition would prevent,
materially delay or materially impair its ability to consummate the transactions
contemplated by this Agreement; provided, further, that the SNET Agreement and
the transactions contemplated thereby shall not be subject to the terms of the
foregoing restriction. Notwithstanding the foregoing, neither it nor any of its
Subsidiaries shall acquire any business the acquisition of which would subject
SBC and its Subsidiaries following the consummation of the Merger to any
Commercial Mobile Radio Service spectrum aggregation limit restriction pursuant
to the provisions of 47 C.F.R. Section 20.6 or place SBC and its Subsidiaries
following the consummation of the Merger in violation of the Cellular Cross
Ownership limits contained in 47 C.F.R. Section 22.942; provided, that, the SNET
Agreement and the transactions contemplated thereby shall not be subject to the
terms of the foregoing restriction. For purposes of this clause (viii), the
amount spent with respect to any acquisition shall be deemed to include the
aggregate amount of capital expenditures that the Company is obligated to make
at any time or plans to make as a result of such acquisition within two years
after the date of acquisition;

                   (ix) neither it nor any of its Subsidiaries shall enter any
business other than the telecommunications business and those businesses
traditionally associated with the telecommunications business; and

                   (x) neither it nor any of its Subsidiaries shall authorize 
or enter into an agreement to do any of the foregoing.

              (c) SBC and the Company agree that any written approval obtained 
under this Section 6.1 may be relied upon by the other party if signed by the
Chief Executive Officer or another executive officer of the other party.

         6.2. Acquisition Proposals. (a) The Company agrees that neither it nor
any of its Subsidiaries shall, and that it shall direct and use its best efforts
to cause 


                                      A-37


<PAGE>


its and its Subsidiaries' employees, agents and representatives (including any
investment banker, attorney or accountant retained by it or any of its
Subsidiaries) (the Company, its Subsidiaries and their officers, directors,
employees, agents and representatives being the "Company Representatives") not
to, directly or indirectly, initiate, solicit, encourage or otherwise facilitate
any inquiries or the making of any proposal or offer with respect to a merger,
reorganization, share exchange, consolidation or similar transaction involving,
or any purchase of, or tender offer for, any of the assets of it or any of its
Subsidiaries or its voting securities if, as a result of such transaction, (i)
the stockholders of the Company would not hold more than 50% of the voting
securities of the surviving corporation or its ultimate parent, (ii) the
directors of the Company would not constitute a majority of the board of
directors of the surviving corporation or its ultimate parent, or (iii) another
Person would acquire more than 50% of the assets of the Company and its
Subsidiaries (any such proposal or offer being hereinafter referred to as a
"Company Acquisition Proposal"). The Company further agrees that neither it nor
any of its Subsidiaries shall, and that it shall direct and use its best efforts
to cause the Company Representatives not to, directly or indirectly, have any
discussion with or provide any confidential information or data to any Person
relating to a Company Acquisition Proposal or engage in any negotiations
concerning a Company Acquisition Proposal, or otherwise facilitate any effort or
attempt to make or implement a Company Acquisition Proposal; provided, however,
that nothing contained in this Agreement shall prevent either the Company or the
Company Representatives from (A) complying with Rule 14e-2 promulgated under the
Exchange Act with regard to a Company Acquisition Proposal; (B) engaging in any
discussions or negotiations with or providing any information to, any Person in
response to an unsolicited bona fide written Company Acquisition Proposal by any
such Person; or (C) recommending such an unsolicited bona fide written Company
Acquisition Proposal to the stockholders of the Company if and only to the
extent that, in such case referred to in clause (B) or (C), (i) the Board of
Directors of the Company concludes in good faith (after consultation


                                      A-38


<PAGE>


with its financial advisor) that such Company Acquisition Proposal is reasonably
capable of being completed, taking into account all legal, financial, regulatory
and other aspects of the proposal and the Person making the proposal, and would,
if consummated, result in a transaction more favorable to the Company's
stockholders from a financial point of view than the transaction contemplated by
this Agreement (any such more favorable Company Acquisition Proposal being
referred to in this Agreement as a "Superior Company Proposal"), (ii) the Board
of Directors of the Company determines in good faith after consultation with
outside legal counsel that such action is necessary for the Board of Directors
to comply with its fiduciary duty under applicable law and (iii) prior to
providing any information or data to any Person in connection with a Company
Acquisition Proposal by any such Person, the Board of Directors of the Company
shall receive from such Person a confidentiality agreement in customary form;
provided, that such confidentiality agreement shall not contain terms that
prevent the Company from complying with its obligations under this Section 6.2.

              (b) SBC agrees that neither it nor any of its Subsidiaries shall,
and that it shall direct and use its best efforts to cause its and its
Subsidiaries' employees, agents and representatives (including any investment
banker, attorney or accountant retained by it or any of its Subsidiaries) (SBC,
its Subsidiaries and their officers, directors, employees, agents and
representatives being the "SBC Representatives") not to, directly or indirectly,
initiate, solicit, encourage or otherwise facilitate any inquiries or the making
of any proposal or offer with respect to a merger, reorganization, share
exchange, consolidation or similar transaction involving, or any purchase of, or
tender offer for, all or any assets of it or any of its Subsidiaries or its
voting securities if, as a result of such transaction, (i) the stockholders of
SBC would not hold more than 50% of the voting securities of the surviving
corporation or its ultimate parent, (ii) the directors of SBC would not
constitute a majority of the board of directors of the surviving corporation or
its ultimate parent, or (iii) another Person would acquire more


                                      A-39


<PAGE>


than 50% of the assets of SBC and its Subsidiaries (any such proposal or offer
being hereinafter referred to as a "SBC Acquisition Proposal"). SBC further
agrees that neither it nor any of its Subsidiaries nor any of the officers and
directors of it or its Subsidiaries shall, and that it shall direct and use its
best efforts to cause the SBC Representatives not to, directly or indirectly,
have any discussion with or provide any confidential information or data to any
Person relating to a SBC Acquisition Proposal or engage in any negotiations
concerning a SBC Acquisition Proposal, or otherwise facilitate any effort or
attempt to make or implement a SBC Acquisition Proposal; provided, however, that
nothing contained in this Agreement shall prevent either SBC or the SBC
Representatives from (A) complying with Rule 14e-2 promulgated under the
Exchange Act with regard to a SBC Acquisition Proposal; (B) engaging in any
discussions or negotiations with or providing any information to, any Person in
response to an unsolicited bona fide written SBC Acquisition Proposal by any
such Person; or (C) recommending such an unsolicited bona fide written SBC
Acquisition Proposal to the stockholders of SBC if and only to the extent that,
in such cases referred to in clause (B) or (C), (i) the Board of Directors of
SBC concludes in good faith (after consultation with its financial advisor) that
such SBC Acquisition Proposal is reasonably capable of being completed, taking
into account all legal, financial, regulatory and other aspects of the proposal
and the Person making the proposal, and would, if consummated, result in a
transaction more favorable to SBC or SBC's stockholders from a financial point
of view than the transaction contemplated by this Agreement (any such more
favorable SBC Acquisition Proposal being referred to herein as a "Superior SBC
Proposal"), (ii) the Board of Directors of SBC determines in good faith after
consultation with outside legal counsel that such action is necessary for the
Board of Directors to comply with its fiduciary duty under applicable law and
(iii) prior to providing any information or data to any Person in connection
with a SBC Acquisition Proposal by any such Person, the Board of Directors of
SBC shall receive from such Person a confidentiality agreement in customary
form; provided, that, such confidentiality agreement shall not contain terms
that


                                      A-40


<PAGE>


prevent SBC from complying with its obligations under this Section 6.2.

              (c) The Company and SBC each agrees that it will immediately
cease and cause to be terminated any existing activities, discussions or
negotiations with any parties conducted heretofore with respect to any Company
Acquisition Proposal or SBC Acquisition Proposal, as the case may be. The
Company and SBC each agrees that it will take the necessary steps to promptly
inform the individuals or entities referred to in the first sentence of
paragraphs (a) and (b), respectively, of the obligations undertaken in Section
6.2(a) or (b), as the case may be. The Company and SBC each agrees that it will
notify the other immediately if any such inquiries, proposals or offers are
received by, any such information is requested from, or any such discussions or
negotiations are sought to be initiated or continued with, any of its
representatives indicating, in connection with such notice, the name of such
Person and the terms and conditions of any proposals or offers, and thereafter
shall inform the other of any material modification of the terms of any such
proposal or offer or the withdrawal thereof. The Company and SBC each also
agrees that it will promptly request each Person that has heretofore executed a
confidentiality agreement in connection with its consideration of any Company
Acquisition Proposal or any SBC Acquisition Proposal, as the case may be, to
return all confidential information heretofore furnished to such Person by or on
behalf of it or any of its Subsidiaries.

         6.3. Information Supplied. The Company and SBC each agrees, as to
itself and its Subsidiaries, that none of the information supplied or to be
supplied by it or its Subsidiaries for inclusion or incorporation by reference
in (i) the Registration Statement on Form S-4 to be filed with the SEC by SBC in
connection with the issuance of shares of SBC Common Stock in the Merger
(including the joint proxy statement and prospectus (the "Prospectus/Proxy
Statement") constituting a part thereof) (the "S-4 Registration Statement")
will, at the time the S-4 Registration Statement becomes effective under the
Securities Act, and (ii) the Prospectus/Proxy Statement and any amendment or
supplement


                                      A-41


<PAGE>


thereto will, at the date of mailing to stockholders and at the times of the
meetings of stockholders of the Company and SBC to be held in connection with
the Merger, in any such case, contain any untrue statement of a material fact or
omit to state any material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under which
they were made, not misleading. If at any time prior to the Effective Time any
information relating to SBC or the Company, or any of their respective
affiliates, officers or directors, should be discovered by SBC or the Company
which should be set forth in an amendment or supplement to either the S-4
Registration Statement or the Prospectus/Proxy Statement, so that any of such
documents would not include any misstatement of a material fact or omit to state
any material fact required to be stated therein or necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading, the party which discovers such information shall promptly
notify the other parties hereto and an appropriate amendment or supplement
describing such information shall be promptly filed with the SEC and, to the
extent required by law, disseminated to the stockholders of the Company and SBC.

         6.4. Stockholders Meetings. The Company will take, in accordance with
applicable law and its certificate of incorporation and by-laws, all action
necessary to convene a meeting of holders of Company Shares (the "Company
Stockholders Meeting") as promptly as practicable after the S-4 Registration
Statement is declared effective to consider and vote upon the adoption of this
Agreement. SBC will take, in accordance with applicable law and its certificate
of incorporation and by-laws, all action necessary to convene a meeting of
holders of the SBC Common Stock (the "SBC Stockholders Meeting", and either the
SBC Stockholders Meeting or the Company Stockholders Meeting, a "Stockholders
Meeting") as promptly as practicable after the S-4 Registration Statement is
declared effective to consider and vote upon the approval of the issuance of SBC
Common Stock required to be issued pursuant to Article IV. Subject to fiduciary
obligations under applicable law and the terms of this Agreement, the Company's
Board of Directors shall recommend that the stockholders of the Company adopt
this Agreement and thereby approve the transactions contemplated hereby and
shall take all lawful action to solicit such adoption, and SBC's Board of
Directors shall


                                      A-42


<PAGE>


recommend that the stockholders of SBC approve the issuance of SBC Common Stock
required to be issued pursuant to Article IV and shall take all lawful action to
solicit such approval.

         6.5. Filings; Other Actions; Notification. (a) SBC and the Company
shall promptly prepare and file with the SEC the Prospectus/Proxy Statement, and
SBC shall prepare and file with the SEC the S-4 Registration Statement as
promptly as practicable. SBC and the Company each shall use all reasonable best
efforts to have the S-4 Registration Statement declared effective under the
Securities Act as promptly as practicable after such filing, and promptly
thereafter mail the Prospectus/Proxy Statement to the respective stockholders of
each of the Company and SBC. SBC shall also use all reasonable best efforts to
obtain prior to the effective date of the S-4 Registration Statement all
necessary state securities law or "blue sky" permits and approvals required in
connection with the Merger and to consummate the other transactions contemplated
by this Agreement and will pay all expenses incident thereto.

              (b) The Company and SBC each shall use all reasonable best
efforts to cause (x) the Merger to qualify for "pooling of interests" accounting
treatment and (y) to be delivered to the other party and its directors a letter
of its independent auditors, dated (i) the date on which the S-4 Registration
Statement shall become effective and (ii) the Closing Date, and addressed to the
other party and its directors, in form and substance customary for "comfort"
letters delivered by independent public accountants in connection with
registration statements similar to the S-4 Registration Statement.

              (c) The Company and SBC shall cooperate with each other and use
(and shall cause their respective Subsidiaries to use) all their respective
reasonable best efforts to take or cause to be taken all actions, and do or
cause to be done all things, necessary, proper or advisable


                                      A-43


<PAGE>


on its part under this Agreement and applicable Laws to consummate and make
effective the Merger and the other transactions contemplated by this Agreement
as soon as practicable, including preparing and filing as promptly as
practicable all documentation to effect all necessary applications, notices,
petitions, filings and other documents and to obtain as promptly as practicable
all consents, registrations, approvals, permits and authorizations required to
be obtained from any third party and/or any Governmental Entity in connection
with the execution and delivery of this Agreement and the consummation of the
Merger and the other transactions contemplated hereby; provided, however, that
nothing in this Section 6.5 shall require, or be construed to require, SBC or
the Company to agree to, or comply with, any conditions to the granting of any
such consent, registration, approval, permit or authorization by any
Governmental Entity if compliance with such conditions, individually or in the
aggregate, would be reasonably likely to have a Material Adverse Effect on the
Surviving Corporation or SBC following the Effective Time (it being understood
that, for this purpose only, materiality shall be determined by reference to the
trading market equity value of SBC prior to the consummation of the Merger and
after taking into account (i) any adverse effects reasonably likely to arise
from any restrictions on the ability of the Surviving Corporation or SBC or any
of their respective Subsidiaries to conduct its operations as currently
conducted or as proposed as of the date of this Agreement to be conducted
resulting from complying with the conditions to or from the grant of any such
consent, registration, approval, permit or authorization, (ii) any benefits
reasonably likely to be realized by SBC on a consolidated basis (other than
those operational benefits reasonably likely to be realized directly from the
consummation of the Merger) resulting from complying with the conditions to or
from the grant of any such consent, registration, approval, permit or
authorization, and (iii) any proceeds resulting from any divestiture required by
a Governmental Entity as a condition to its granting any such consent,
registration, approval, permit or authorization); provided, further, that any
divestiture by either SBC or the Company or any of their


                                      A-44


<PAGE>


respective Subsidiaries reasonably required to cause the Surviving Corporation
to be in compliance with the Commercial Mobile Radio Service spectrum
aggregation limits established by the FCC in 47 C.F.R. Section 20.6 and the
Cellular Cross Ownership limits contained in 47 C.F.R. Section 22.942 shall be
deemed not to have any adverse effect on either the Surviving Corporation or SBC
following the Effective Time (a "Regulatory Material Adverse Effect"). Subject
to applicable laws relating to the exchange of information, SBC and the Company
shall have the right to review in advance, and to the extent practicable each
will consult the other on, all the information relating to SBC or the Company,
as the case may be, and any of their respective Subsidiaries, that appear in any
filing made with, or written materials submitted to, any third party and/or any
Governmental Entity in connection with the Merger and the other transactions
contemplated by this Agreement. In exercising the foregoing right, each of the
Company and SBC shall act reasonably and as promptly as practicable.

              (d) The Company and SBC each shall, upon request by the other,
furnish the other with all information concerning itself, its Subsidiaries,
directors, officers and stockholders and such other matters as may be reasonably
necessary or advisable in connection with the Prospectus/Proxy Statement, the
S-4 Registration Statement or any other statement, filing, notice or application
made by or on behalf of SBC, the Company or any of their respective Subsidiaries
to any third party and/or any Governmental Entity in connection with the Merger
and the transactions contemplated by this Agreement.

              (e) The Company and SBC each shall keep the other apprised of the
status of matters relating to completion of the transactions contemplated
hereby, including promptly furnishing the other with copies of notice or other
communications received by SBC or the Company, as the case may be, or any of its
Subsidiaries, from any third party and/or any Governmental Entity with respect
to the Merger and the other transactions contemplated by this Agreement. Each of
the Company and SBC shall give prompt notice to the other of any change that is


                                      A-45


<PAGE>


reasonably likely to result in a Material Adverse Effect on it or of any failure
of any condition to the other party's obligations to effect the Merger set forth
in Article VII.

         6.6. Access; Consultation. (a) Upon reasonable notice, and except as
may otherwise be required by applicable law, the Company and SBC each shall (and
shall cause its Subsidiaries to) afford the SBC Representatives or the Company
Representatives, as the case may be, reasonable access, during normal business
hours throughout the period prior to the Effective Time, to its properties,
books, contracts and records and, during such period, each shall (and shall
cause its Subsidiaries to) furnish promptly to the other all information
concerning its business, properties and personnel as may reasonably be
requested, provided that no investigation pursuant to this Section shall affect
or be deemed to modify any representation or warranty made by the Company, SBC
or Merger Sub hereunder, and provided, further, that the foregoing shall not
require the Company or SBC to permit any inspection, or to disclose any
information, that in the reasonable judgment of the Company or SBC, as the case
may be, would result in the disclosure of any trade secrets of third parties or
violate any of its obligations with respect to confidentiality if the Company or
SBC, as the case may be, shall have used all reasonable best efforts to obtain
the consent of such third party to such inspection or disclosure. All requests
for information made pursuant to this Section shall be directed to an executive
officer of the Company or SBC, as the case may be, or such Person as may be
designated by any such executive officer, as the case may be.

              (b) From the date hereof to the Effective Time, SBC and the
Company agree to consult with each other on a regular basis on a schedule to be
agreed with regard to their respective operations.

              (c) From the date hereof to the Effective Time, the Company
agrees to notify SBC in advance of any issuance by the Company or any of its
Subsidiaries of any long-term debt in excess of $50 million, Company Preferred
Shares or Company Preference Shares.


                                      A-46


<PAGE>


         6.7. Affiliates. (a) Each of the Company and SBC shall deliver to the
other a letter identifying all Persons whom such party believes to be, at the
date of the Stockholders Meeting of such party, "affiliates" of such party for
purposes of applicable interpretations regarding use of the pooling-of-interests
accounting method and, in the case of "affiliates" of the Company, for purposes
of Rule 145 under the Securities Act. Each of the Company and SBC shall use all
reasonable best efforts to cause each Person who is identified as an "affiliate"
in the letter referred to above to deliver to SBC on or prior to the date of the
Stockholders Meeting of such party a written agreement, in the form attached
hereto as Exhibit A, in the case of affiliates of the Company (the "Company
Affiliate's Letter"), and Exhibit B, in the case of affiliates of SBC (the "SBC
Affiliate's Letter"). Prior to the Effective Time, each of the Company and SBC
shall use all reasonable best efforts to cause each additional Person who is
identified as an "affiliate" after the date of the relevant Stockholders Meeting
to execute the applicable written agreement as set forth in this Section 6.7, as
soon as practicable after such Person is identified.

              (b) If the Merger would otherwise qualify for pooling-of-
interests accounting treatment, shares of SBC Common Stock issued to such
affiliates of the Company in exchange for Company Shares shall not be
transferable until such time as financial results covering at least 30 days of
combined operations of SBC and the Company shall have been published within the
meaning of Section 201.01 of the SEC's Codification of Financial Reporting
Policies, regardless of whether each such affiliate has provided the written
agreement referred to in this Section, except to the extent permitted by, and in
accordance with, SEC Accounting Series Release 135 and SEC Staff Accounting
Bulletins 65 and 76. Any Company Shares held by any such affiliate shall not be
transferable, regardless of whether such affiliate has provided the applicable
written agreement referred to in this Section, if such transfer, either alone or
in the aggregate with other transfers by affiliates, would preclude SBC's
ability to account for the business combination to be effected by the


                                      A-47


<PAGE>


Merger as a pooling of interests. The Company shall not register the transfer of
any Certificate, unless such transfer is made in compliance with the foregoing.

         6.8. Stock Exchange Listing and De-listing. SBC shall use its best
efforts to cause the shares of SBC Common Stock to be issued in the Merger to be
approved for listing on the New York Stock Exchange ("NYSE"), subject to
official notice of issuance, prior to the Closing Date. The Surviving
Corporation shall use its best efforts to cause the Company Shares to be
de-listed from the NYSE and the Chicago, Boston, Pacific and Philadelphia stock
exchanges and de-registered under the Exchange Act as soon as practicable
following the Effective Time.

         6.9. Publicity. The initial press release with respect to the Merger
shall be a joint press release and thereafter the Company and SBC shall consult
with each other prior to issuing any press releases or otherwise making public
announcements with respect to the Merger and the other transactions contemplated
by this Agreement and prior to making any filings with any third party and/or
any Governmental Entity (including any national securities exchange) with
respect thereto, except as may be required by law or by obligations pursuant to
any listing agreement with or rules of any national securities exchange.

         6.10. Benefits.

              (a) Stock Options.

                   (i) At the Effective Time, each outstanding option to
purchase Company Shares (a "Company Option") under the Company Stock Plans,
whether vested or unvested, shall be deemed to constitute an option to acquire,
on the same terms and conditions as were applicable under such Company Option
(except to the extent such terms and conditions are altered in accordance with
their terms as a result of the consummation of the transactions contemplated by
this Agreement), the same number of shares of SBC Common Stock as the holder of
such Company Option would have been entitled to receive pursuant to the Merger


                                      A-48


<PAGE>


had such holder exercised such Company Option in full immediately prior to the
Effective Time (rounded down to the nearest whole number) (a "Substitute
Option"), at an exercise price per share (rounded up to the nearest whole
cent)(the "Substitute Option Price") equal to (y) the aggregate exercise price
for the Company Shares otherwise purchasable pursuant to such Company Option
divided by (z) the number of full shares of SBC Common Stock deemed purchasable
pursuant to such Company Option in accordance with the foregoing. For each
Substitute Option substituted for a Company Option that included a right under
certain circumstances to receive dividend equivalents in the form of stock units
("Company Stock Units"), all Company Stock Units credited to the account of the
holder of such Substitute Option at the Effective Time shall, as of the
Effective Time, be deemed to constitute a number of stock units, each of which
shall represent one share of SBC Common Stock ("SBC Stock Units"), equal to the
number of shares of SBC Common Stock the holder of such Substitute Option would
have been entitled to receive pursuant to this Agreement had such Company Stock
Units been distributed to such holder in full immediately prior to the Effective
Time and thereafter SBC Stock Units shall continue to be credited to the account
of the holder of such Substitute Option to the same extent and on the same terms
and conditions as they would have under the Company Option for which the
Substitute Option was substituted (except that the record dates and dividend
amounts shall be the record dates and dividend amounts for SBC Common Stock),
and all such SBC Stock Units shall be distributed at the same times and in the
same manner as the Company Stock Units would have been distributed had the
Substitute Option not been substituted for the Company Option (except that the
option price used to determine if the SBC Stock Units can be distributed shall
be the Substitute Option Price). At or prior to the Effective Time, the Company
shall make all necessary arrangements with respect to the Company Stock Plans to
permit the assumption of the unexercised Company Options by SBC pursuant to this
Section and as soon as practicable after the Effective Time SBC shall use its
best efforts to register under the Securities Act on Form S-8 or other
appropriate form (and use its best efforts to maintain the effectiveness
thereof)


                                      A-49


<PAGE>


shares of SBC Common Stock issuable pursuant to all Substitute Options.

              (ii) Effective at the Effective Time, SBC shall assume each
Company Option in accordance with the terms of the Company Stock Plan under
which it was issued and the stock option agreement by which it is evidenced. As
promptly as practicable after the Effective Time, the Company shall deliver to
the participants in the Stock Plans appropriate notices setting forth such 
participants' rights pursuant to such assumed Company Options.

              (b) Employee Benefits. SBC agrees that it shall cause the
Surviving Corporation for at least two years after the Effective Time to provide
or cause to be provided to employees of the Company and its Subsidiaries
compensation and benefit plans that are no less favorable, in the aggregate,
than the Company Compensation and Benefit Plans disclosed in Section 6.10(b) of
the Company Disclosure Letter; provided, however, if during this period SBC
implements any widespread increase or decrease in benefits under compensation
and benefit plans or in the cost thereof to participants under compensation and
benefit plans applicable to employees of SBC and its Subsidiaries (other than
the Surviving Corporation and its Subsidiaries), the Surviving Corporation shall
proportionately adjust the benefits under the Company's compensation and benefit
plans or the cost thereof to participants, and provided, further with respect to
employees who are subject to collective bargaining, all benefits shall be
provided only in accordance with the applicable collective bargaining agreement.
At or prior to the Effective Time, the Company shall make all necessary
arrangements to cause any Company Share units under the Company's Compensation
and Benefit Plans to be converted into share units with respect to SBC Common
Stock by multiplying the Company Shares subject to such Company Share units by
the Exchange Ratio. SBC shall, and shall cause the Surviving Corporation to,
honor, pursuant to their terms, all employee benefit obligations existing at the
Closing Date to current and former employees under the Company Compensation and
Benefit Plans.


                                      A-50


<PAGE>


         6.11. Expenses. Whether or not the Merger is consummated, all costs and
expenses incurred in connection with this Agreement and the Merger and the other
transactions contemplated by this Agreement shall be paid by the party incurring
such expense, except that expenses incurred in connection with the filing fee
for the S-4 Registration Statement and printing and mailing the Prospectus/Proxy
Statement and the S-4 Registration Statement and the filing fee under the HSR
Act shall be shared equally by SBC and the Company.

         6.12. Indemnification; Directors' and Officers' Insurance. (a) From and
after the Effective Time, SBC shall, and shall cause the Surviving Corporation
to, indemnify and hold harmless each present and former director and officer of
the Company (when acting in such capacity) determined as of the Effective Time
(the "Indemnified Parties"), against any costs or expenses (including reasonable
attorneys' fees), judgments, fines, losses, claims, damages or liabilities
(collectively, "Costs") incurred in connection with any claim, action, suit,
proceeding or investigation, whether civil, criminal, administrative or
investigative, arising out of or pertaining to matters existing or occurring at
or prior to the Effective Time, whether asserted or claimed prior to, at or
after the Effective Time, to the fullest extent permitted under Delaware law
(and the Surviving Corporation shall also advance expenses as incurred to the
fullest extent permitted under applicable law, provided the Person to whom
expenses are advanced provides an undertaking to repay such advances if it is
ultimately determined that such Person is not entitled to indemnification).

              (b) Any Indemnified Party wishing to claim indemnification under
paragraph (a) of this Section 6.12, upon learning of any such claim, action,
suit, proceeding or investigation, shall promptly notify the Surviving
Corporation thereof, but the failure to so notify shall not relieve the
Surviving Corporation of any liability it may have to such Indemnified Party if
such failure does not materially prejudice the Surviving Corporation. In the
event of any such claim, action, suit, proceeding or 


                                      A-51


<PAGE>


investigation (whether arising before or after the Effective Time), (i) the
Surviving Corporation shall have the right to assume the defense thereof and the
Surviving Corporation shall not be liable to such Indemnified Parties for any
legal expenses of other counsel or any other expenses subsequently incurred by
such Indemnified Parties in connection with the defense thereof, except that if
the Surviving Corporation elects not to assume such defense or counsel for the
Indemnified Parties advises that there are issues which raise conflicts of
interest between the Surviving Corporation and the Indemnified Parties, the
Indemnified Parties may retain counsel satisfactory to them, and the Surviving
Corporation shall pay all reasonable fees and expenses of such counsel for the
Indemnified Parties promptly as statements therefor are received; provided,
however, that the Surviving Corporation shall be obligated pursuant to this
paragraph (b) to pay for only one firm of counsel for all Indemnified Parties in
any jurisdiction (unless there is a conflict of interest as provided above) (ii)
the Indemnified Parties will cooperate in the defense of any such matter and
(iii) the Surviving Corporation shall not be liable for any settlement effected
without its prior written consent.

              (c) The Surviving Corporation shall maintain a policy of
officers' and directors' liability insurance for acts and omissions occurring
prior to the Effective Time ("D&O Insurance") with coverage in amount and scope
at least as favorable as the Company's existing directors' and officers'
liability insurance coverage for a period of six years after the Effective Time;
provided, however, if the existing D&O Insurance expires, is terminated or
cancelled, or if the annual premium therefor is increased to an amount in excess
of 175% of the last annual premium paid prior to the date hereof (the "Current
Premium"), in each case during such six year period, the Surviving Corporation
will use its best efforts to obtain D&O Insurance in an amount and scope as
great as can be obtained for the remainder of such period for a premium not in
excess (on an annualized basis) of 175% of the Current Premium.


                                      A-52


<PAGE>


              (d) If SBC or any of its successors or assigns (i) shall
consolidate with or merge into any other corporation or entity and shall not be
the continuing or surviving corporation or entity of such consolidation or
merger or (ii) shall transfer all or substantially all of its properties and
assets to any individual, corporation or other entity, then and in each such
case, proper provisions shall be made so that the successors and assigns of SBC
shall assume all of the obligations set forth in this Section.

              (e) The provisions of this Section are intended to be for the
benefit of, and shall be enforceable by, each of the Indemnified Parties, their
heirs and their representatives.

         6.13. Takeover Statute. If any Takeover Statute is or may become
applicable to the Merger or the other transactions contemplated by this
Agreement, each of SBC and the Company and its Board of Directors shall grant
such approvals and take such actions as are necessary so that such transactions
may be consummated as promptly as practicable on the terms contemplated by this
Agreement or by the Merger and otherwise act to eliminate or minimize the
effects of such statute or regulation on such transactions. The Company will
cause the Rights Agent to promptly execute the Rights Amendment.

         6.14. Dividends. The Company shall coordinate with SBC the declaration,
setting of record dates and payment dates of dividends on Company Shares so that
holders of Company Shares do not receive dividends on both Company Shares and
SBC Common Stock received in the Merger in respect of any calendar quarter or
fail to receive a dividend on either Company Shares or SBC Common Stock received
in the Merger in respect of any calendar quarter.

         6.15. Confidentiality. The Company and SBC each acknowledges and
confirms that it has entered into a Confidentiality and Non-Disclosure
Agreement, dated April 8, 1997 (the "Confidentiality Agreement"), that
information provided by each party hereto to the other party hereto


                                      A-53


<PAGE>


pursuant to this Agreement is subject to the terms of the Confidentiality
Agreement and that the Confidentiality Agreement shall remain in full force and
effect in accordance with its terms, except that notwithstanding any provision
to the contrary contained in the Confidentiality Agreement, the Confidentiality
Agreement shall not terminate until the earlier to occur of the following: (i)
the Effective Time and (ii) the expiration of two years following the date of
any termination of this Agreement pursuant to Article VIII.

         6.16. Control of the Company's Operations. Nothing contained in this
Agreement shall give SBC or the Company, directly or indirectly, rights to
control or direct the operations of the other prior to the Effective Time. Prior
to the Effective Time, each of SBC and the Company shall exercise, consistent
with the terms and conditions of this Agreement, complete control and
supervision of its operations.


                                   ARTICLE VII

                                   Conditions

         7.1. Conditions to Each Party's Obligation to Effect the Merger. The
respective obligation of each party to effect the Merger is subject to the
satisfaction or waiver at or prior to the Effective Time of each of the
following conditions:

              (a) Stockholder Approval. This Agreement shall have been duly
adopted by holders of Company Shares constituting the Company Requisite Vote and
have been duly adopted by the sole stockholder of Merger Sub, and the issuance
of SBC Common Stock required to be issued pursuant to Article IV shall have been
duly approved by the holders of shares of SBC Common Stock constituting the SBC
Requisite Vote;

              (b) NYSE Listing. The shares of SBC Common Stock issuable to the
Company stockholders pursuant


                                      A-54


<PAGE>


to this Agreement shall have been authorized for listing on the NYSE upon
official notice of issuance.

              (c) Governmental Consents. The waiting period applicable to the
consummation of the Merger under the HSR Act shall have expired or been
terminated and all material Company Required Consents and material SBC Required
Consents from or with any Governmental Entity shall have been made or obtained
pursuant to a Final Order, free of any conditions (other than conditions that
are not reasonably likely, either individually or in the aggregate, to have a
Regulatory Material Adverse Effect). For the purposes of this Agreement, "Final
Order" means an action or decision that has been granted as to which (a) no
request for a stay or any similar request is pending, no stay is in effect, the
action or decision has not been vacated, reversed, set aside, annulled or
suspended and any deadline for filing such a request that may be designated by
statute or regulation has passed, (b) no petition for rehearing or
reconsideration or application for review is pending and the time for the filing
of any such petition or application has passed, (c) no Governmental Entity has
undertaken to reconsider the action on its own motion and the time within which
it may effect such reconsideration has passed and (d) no appeal is pending
(including other administrative or judicial review) or in effect and any
deadline for filing any such appeal that may be specified by statute or rule has
passed, which in any such case (a), (b), (c) or (d) is reasonably likely to
result in vacating, reversing, setting aside, annulling, suspending or modifying
such action or decision (in any such case in a manner which would have a
Regulatory Material Adverse Effect following the Effective Time).

              (d) Laws and Order. No Governmental Entity of competent
jurisdiction shall have enacted, issued, promulgated, enforced or entered any
Law (whether temporary, preliminary or permanent) that is in effect and
restrains, enjoins or otherwise prohibits consummation of the Merger or the
other transactions contemplated by this Agreement or that is, individually or in
the aggregate with all other such Laws, reasonably likely to have a Material
Adverse


                                      A-55


<PAGE>


Effect on SBC or the Company (collectively, an "Order"), and no Governmental
Entity shall have instituted any proceeding, or, in the case of a federal
Governmental Entity, threatened in writing to institute any proceeding, seeking
any such Order.

              (e) S-4. The S-4 Registration Statement shall have become
effective under the Securities Act. No stop order suspending the effectiveness
of the S-4 Registration Statement shall have been issued, and no proceedings for
that purpose shall have been initiated or be threatened by the SEC.

              (f) Accountants' Letters. SBC and the Company shall have received
the "comfort" letters described in Section 6.5(b). SBC and the Company shall
have received letters from their respective independent public accounting firms
to the effect that the Merger will qualify for "pooling of interests" accounting
treatment.

              (g) Blue Sky Approvals. SBC shall have received all state
securities and "blue sky" permits and approvals necessary to consummate the
transactions contemplated hereby.

         7.2. Conditions to Obligations of SBC and Merger Sub. The obligations
of SBC and Merger Sub to effect the Merger are also subject to the satisfaction
or waiver by SBC at or prior to the Effective Time of the following conditions:

              (a) Representations and Warranties. The representations and
warranties of the Company set forth in this Agreement (i) to the extent
qualified by Material Adverse Effect shall be true and correct and (ii) to the
extent not qualified by Material Adverse Effect shall be true and correct,
except that this clause (ii) shall be deemed satisfied so long as any failures
of such representations and warranties to be true and correct, taken together,
do not have a Material Adverse Effect on the Company, in each case (i) and 
(ii), as of the Closing Date as though made on and as of the Closing Date
(except to the


                                      A-56


<PAGE>


extent such representations and warranties speak as of an earlier date), and SBC
shall have received a certificate signed on behalf of the Company by an
executive officer of the Company to such effect.

               (b) Performance of Obligations of the Company. The Company shall
have performed in all material respects all obligations required to be performed
by it under this Agreement at or prior to the Closing Date, and SBC shall have
received a certificate signed on behalf of the Company by an executive officer
of the Company to such effect.

              (c) Consents Under Agreements. The Company shall have obtained the
consent or approval of each Person whose consent or approval shall be required
in order to consummate the transactions contemplated by this Agreement under any
Contract to which the Company or any of its Subsidiaries is a party, except
those for which the failure to obtain such consent or approval, individually or
in the aggregate, is not reasonably likely to have, a Material Adverse Effect on
the Company.

               (d) Tax Opinion. SBC shall have received the opinion of Sullivan
& Cromwell, counsel to SBC, dated the Closing Date, to the effect that the
Merger will be treated for Federal income tax purposes as a reorganization
within the meaning of Section 368(a) of the Code, and that each of SBC, Merger
Sub and the Company will be a party to that reorganization within the meaning of
Section 368(b) of the Code; it being understood that in rendering such opinion,
such counsel shall be entitled to rely on certain customary representations and
assumptions.

         7.3. Conditions to Obligation of the Company. The obligation of the
Company to effect the Merger is also subject to the satisfaction or waiver by
the Company at or prior to the Effective Time of the following conditions:

              (a) Representations and Warranties. The representations and
warranties of SBC and Merger Sub set forth in this Agreement (i) to the extent
qualified by


                                      A-57


<PAGE>


Material Adverse Effect shall be true and correct, and (ii) to the extent not
qualified by Material Adverse Effect shall be true and correct, except that this
clause (ii) shall be deemed satisfied so long as any failures of such
representations and warranties to be true and correct, taken together, do not
have a Material Adverse Effect on SBC, in each case (i) and (ii), as of the
Closing Date as though made on and as of the Closing Date (except to the extent
such representations and warranties speak as of an earlier date), and the
Company shall have received a certificate signed on behalf of SBC by an
executive officer of SBC to such effect.

              (b) Performance of Obligations of SBC and Merger Sub. Each of SBC
and Merger Sub shall have performed in all material respects all obligations
required to be performed by it under this Agreement at or prior to the Closing
Date, and the Company shall have received a certificate signed on behalf of SBC
and Merger Sub by an executive officer of SBC to such effect.

              (c) Tax Opinion. The Company shall have received the opinion of
Skadden, Arps, Slate, Meagher & Flom (Illinois), counsel to the Company, dated
the Closing Date, to the effect that the Merger will be treated for Federal
income tax purposes as a reorganization within the meaning of Section 368(a) of
the Code, and that each of SBC, Merger Sub and the Company will be a party to
that reorganization within the meaning of Section 368(b) of the Code; it being
understood that in rendering such opinion, such counsel shall be entitled to
rely on certain customary representations and assumptions.


                                  ARTICLE VIII

                                   Termination

         8.1. Termination by Mutual Consent. This Agreement may be terminated
and the Merger may be abandoned at any time prior to the Effective Time, whether
before or after the approval by stockholders of the Company and SBC


                                      A-58


<PAGE>


referred to in Section 7.1(a), by mutual written consent of the Company and SBC,
by action of their respective Boards of Directors.

         8.2. Termination by Either SBC or the Company. This Agreement may be
terminated and the Merger may be abandoned at any time prior to the Effective
Time by action of the Board of Directors of either SBC or the Company if (i) the
Merger shall not have been consummated by July 31, 1999 (the "Termination
Date"), whether such date is before or after the date of approval by the
stockholders of the Company or SBC; provided, however, that if SBC or the
Company determines that additional time is necessary in connection with
obtaining a SBC Required Consent or a Company Required Consent from or with any
Governmental Entity, the Termination Date may be extended for up to 60 calendar
days at any one time by SBC or the Company from time to time by written notice
to the other party up to a date not beyond March 31, 2000, which date shall be
deemed to be the Termination Date, (ii) the adoption of this Agreement by the
Company's stockholders required by Section 7.1(a) shall not have occurred at a
meeting duly convened therefor or at any adjournment or postponement thereof,
(iii) the approval of SBC's stockholders necessary for the issuance of SBC
Common Stock required to be issued pursuant to Article IV as required by Section
7.1(a) shall not have been obtained at a meeting duly convened therefor or at
any adjournment or postponement thereof, or (iv) any Order permanently
restraining, enjoining or otherwise prohibiting consummation of the Merger shall
become final and non-appealable (whether before or after the adoption or
approval by the stockholders of the Company or SBC, as the case may be);
provided, that the right to terminate this Agreement pursuant to clause (i)
above shall not be available to any party that has breached in any material
respect its obligations under this Agreement in any manner that shall have
proximately contributed to the failure of the Merger to be consummated.

         8.3. Termination by the Company. This Agreement may be terminated and
the Merger may be abandoned at any time prior to the Effective Time, whether
before or after


                                      A-59


<PAGE>


the adoption of this Agreement by the stockholders of the Company referred to in
Section 7.1(a), by action of the Board of Directors of the Company:

              (a) if (i) the Board of Directors of the Company approves
entering into a binding written agreement concerning a transaction that
constitutes a Superior Company Proposal and the Company notifies SBC in writing
that the Company desires to enter into such agreement, (ii) SBC does not make,
within ten calendar days after receipt of the Company's written notification of
its desire to enter into a binding agreement for a Superior Company Proposal,
the terms of which are specified in such notice, an offer that the Board of
Directors of the Company believes, in good faith after consultation with its
financial advisors, is at least as favorable, from a financial point of view, to
the stockholders of the Company as the Superior Company Proposal, and (iii) the
Company prior to such termination pays to SBC in immediately available funds any
fees required to be paid pursuant to Section 8.5(b). The Company agrees to
notify SBC promptly if its desire to enter into a written agreement referred to
in its notification shall change at any time after giving such notification; or

              (b) if (i) the Board of Directors of SBC shall have withdrawn or
adversely modified its approval of this Agreement or its recommendation to the
stockholders of SBC that such stockholders approve the issuance of SBC Common
Stock required to be issued pursuant to Article IV or failed to reconfirm such
recommendation within fifteen business days after a written request by the
Company to do so; provided that such a request is made after the Board of
Directors of SBC or any SBC Representative shall have taken any of the actions
that would be proscribed by Section 6.2(b) but for the exception therein
allowing certain actions to be taken pursuant to clause (B) or (C) of the
proviso thereof with respect to any bona fide written SBC Acquisition Proposal
that has not been withdrawn or rejected by the Board of Directors of SBC, (ii)
there has been a material breach by SBC or Merger Sub of any representation,
warranty, covenant or agreement contained in this Agreement


                                      A-60


<PAGE>


which (x) would result in a failure of a condition set forth in Section 7.3(a)
or 7.3(b) and (y) cannot be or is not cured prior to the Termination Date, or
(iii) SBC or any SBC Representative shall take any of the actions that would be
proscribed by Section 6.2(b) but for the exception therein allowing certain
actions to be taken pursuant to clause (B) or (C) of the proviso thereof (other
than any such actions taken pursuant to such clause (B) with respect to any bona
fide written SBC Acquisition Proposal (received after the date hereof that was
not solicited by SBC after the date hereof) during the Initial 50 Day Period, if
such SBC Acquisition Proposal is received during the first through the 30th days
of the Initial 50 Day Period or during the 20 calendar day period following
receipt of such SBC Acquisition Proposal by SBC if such SBC Acquisition Proposal
is received during the 31st through 50th days of the Initial 50 Day Period, in
each case if, and only if, SBC receives such SBC Acquisition Proposal during the
Initial 50 Day Period). For purposes of this Agreement, the "Initial 50 Day
Period" shall mean the 50 calendar day period commencing with the first calendar
day after the day on which this Agreement shall have been filed by SBC or the
Company with the SEC as an exhibit to a Current Report on Form 8-K under the
Exchange Act.

         8.4. Termination by SBC. This Agreement may be terminated and the
Merger may be abandoned at any time prior to the Effective Time, before or after
the approval by the stockholders of SBC referred to in Section 7.1(a), by action
of the Board of Directors of SBC:

              (a) If (i) the Board of Directors of SBC approves entering into a
binding written agreement concerning a transaction that constitutes a Superior
SBC Proposal and SBC notifies the Company in writing that SBC desires to enter
into such agreement, (ii) the Company does not make, within ten days after
receipt of SBC's written notification of its desire to enter into a binding
agreement for a Superior SBC Proposal, the terms of which are specified in such
notice, an offer that the Board of Directors of SBC believes, in good faith
after consultation with its financial advisors, is at least as favorable, from


                                      A-61


<PAGE>


a financial point of view, to the stockholders of SBC as the Superior SBC
Proposal, and (iii) SBC prior to such termination pays to the Company in
immediately available funds any fees required to be paid pursuant to Section
8.5(c). SBC agrees to notify the Company promptly if its desire to enter into a
written agreement referred to in its notification shall change at any time after
giving such notification.

              (b) If (i) the Board of Directors of the Company shall have
withdrawn or adversely modified its approval or recommendation to the Company's
stockholders of this Agreement, or failed to reconfirm such recommendation
within fifteen business days after a written request by SBC to do so; provided
that such a request is made after the Board of Directors of the Company or any
Company Representative shall have taken any of the actions that would be
proscribed by Section 6.2(a) but for the exception therein allowing certain
actions to be taken pursuant to clause (B) or (C) of the proviso thereof with
respect to any bona fide written Company Acquisition Proposal that has not been
withdrawn or rejected by the Board of Directors of the Company, or (ii) there
has been a material breach by the Company of any representation, warranty,
covenant or agreement contained in this Agreement which (x) would result in a
failure of a condition set forth in Section 7.2(a) or 7.2(b) and (y) cannot be
or is not cured prior to the Termination Date, or (iii) if the Company or any
Company Representative shall take any of the actions that would be proscribed by
Section 6.2(a) but for the exception therein allowing certain actions to be
taken pursuant to clause (B) or (C) of the proviso thereof (other than any such
actions taken pursuant to such clause (B) with respect to any bona fide written
Company Acquisition Proposal (received after the date hereof that was not
solicited by the Company after the date hereof) during the Initial 50 Day
Period, if such Company Acquisition Proposal is received during the first
through the 30th days of the Initial 50 Day Period or during the 20 calendar day
period following receipt of such Company Acquisition Proposal by the Company if
such Company Acquisition Proposal is received during the 31st through 50th days
of the Initial 50 Day Period, in each case if, and


                                      A-62


<PAGE>


only if, the Company receives such Company Acquisition Proposal during the
Initial 50 Day Period).

        8.5. Effect of Termination and Abandonment. (a) In the event of 
termination of this Agreement and the abandonment of the Merger pursuant to this
Article VIII, this Agreement (other than as set forth in Section 9.1) shall
become void and of no effect with no liability on the part of any party hereto
(or of any of its directors, officers, employees, agents, legal or financial
advisors or other representatives); provided, however, no such termination shall
relieve any party hereto from any liability for damages resulting from any
willful and intentional breach of this Agreement (to the extent any such damages
exceed any Termination Fee that may have been paid pursuant to Section 8.5(b) or
8.5(c)) or from any obligation to pay, if applicable, the Termination Fee
pursuant to Section 8.5(b) or 8.5(c).

              (b) In the event that (i) a bona fide Company Acquisition 
Proposal shall have been made to the Company and made known to stockholders
generally or have been made directly to stockholders generally or any Person
shall have publicly announced an intention (whether or not conditional) to make
a bona fide Company Acquisition Proposal and such Company Acquisition Proposal
or announced intention shall not have been withdrawn prior to the Company's 
Stockholders Meeting and thereafter this Agreement is terminated by either SBC
or the Company pursuant to Section 8.2(ii) and within nine months after such
termination the Company shall have entered into an agreement to consummate a
transaction that would constitute a Company Acquisition Proposal if it were the
subject of a proposal, or (ii) this Agreement is terminated (x) by the Company
pursuant to Section 8.3(a) or (y) by SBC pursuant to Section 8.4(b)(i), (b)(ii)
(solely with respect to a willful and intentional breach) or (b)(iii), then the
Company shall promptly, but in no event later than two days after the date of
such termination (except as otherwise provided in Section 8.3(a)), or, in the
case of termination pursuant to Section 8.2(ii), two days after the relevant
agreement is entered into, pay SBC a fee equal to $1.2 billion (the "Termination


                                      A-63


<PAGE>


Fee"), which amount shall be exclusive of any expenses to be paid pursuant to
Section 6.11, payable by wire transfer of same day funds. The Company
acknowledges that the agreements contained in this Section 8.5(b) are an
integral part of the transactions contemplated by this Agreement, and that,
without these agreements, SBC and Merger Sub would not enter into this
Agreement; accordingly, if the Company fails to pay promptly the amount due
pursuant to this Section 8.5(b), and, in order to obtain such payment, SBC or
Merger Sub commences a suit which results in a judgment against the Company for
the fee set forth in this paragraph (b), the Company shall pay to SBC or Merger
Sub its costs and expenses (including attorneys' fees) in connection with such
suit, together with interest on the amount of the fee at the prime rate of
Citibank N.A. in effect on the date such payment was required to be made.

              (c) In the event that (i) a bona fide SBC Acquisition Proposal 
shall have been made to SBC and made known to stockholders generally or shall
have been made directly to stockholders generally or any Person shall have
publicly announced an intention (whether or not conditional) to make a bona fide
SBC Acquisition Proposal and such SBC Acquisition Proposal or announced
intention shall not have been withdrawn prior to the SBC Stockholder Meeting and
thereafter this Agreement is terminated by the Company or SBC pursuant to
Section 8.2(iii) and within nine months after such termination SBC shall have
entered into an agreement to consummate a transaction that would constitute a
SBC Acquisition Proposal if it were the subject of a proposal, or (ii) this
Agreement is terminated (x) by SBC pursuant to Section 8.4(a) or (y) by the
Company pursuant to Section 8.3(b)(i), (b)(ii) (solely with respect to a willful
and intentional breach) or (b)(iii), then SBC shall promptly, but in no event
later than two days after the date of such termination (except as otherwise
provided in Section 8.4(a)), or, in the case of a termination pursuant to
Section 8.2(iii), two (2) days after the relevant agreement is entered into, pay
the Company a fee equal to the Termination Fee, which amount shall be exclusive
of any expenses to be paid pursuant to Section 6.11, payable by wire transfer of
same day funds. SBC acknowledges that the 


                                      A-64


<PAGE>


agreements contained in this Section 8.5(c) are an integral part of the
transactions contemplated by this Agreement, and that, without these agreements,
the Company would not enter into this Agreement; accordingly, if SBC fails to
pay promptly the amount due pursuant to this Section 8.5(c), and, in order to
obtain such payment, the Company commences a suit which results in a judgment
against SBC for the fee set forth in this paragraph (c), SBC shall pay to the
Company its costs and expenses (including attorneys' fees) in connection with
such suit, together with interest on the amount of the fee at the prime rate of
Citibank N.A. in effect on the date such payment was required to be made.


                                   ARTICLE IX

                            Miscellaneous and General

         9.1. Survival. This Article IX and the agreements of the Company, SBC
and Merger Sub contained in Sections 6.10 (Benefits), 6.11 (Expenses) and 6.12
(Indemnification; Directors' and Officers' Insurance) shall survive the
consummation of the Merger. This Article IX (other than Section 9.2
(Modification or Amendment), Section 9.3 (Waiver of Conditions) and Section 9.13
(Assignment)) and the agreements of the Company, SBC and Merger Sub contained in
Section 6.11 (Expenses), Section 6.15 (Confidentiality) and Section 8.5 (Effect
of Termination and Abandonment) shall survive the termination of this Agreement.
All other representations, warranties, covenants and agreements in this
Agreement shall not survive the consummation of the Merger or the termination of
this Agreement.

         9.2. Modification or Amendment.  Subject to the provisions of 
applicable law, at any time prior to the Effective Time, the parties hereto may
modify or amend this Agreement, by written agreement executed and delivered by
duly authorized officers of the respective parties.

         9.3. Waiver of Conditions. (a) Any provision of this Agreement may be 
waived prior to the Effective Time if, 


                                      A-65


<PAGE>


and only if, such waiver is in writing and signed by the party against whom the
waiver is to be effective.

              (b) No failure or delay by any party in exercising any right,
power or privilege hereunder shall operate as a waiver thereof nor shall any
single or partial exercise thereof preclude any other or further exercise
thereof or the exercise of any other right, power or privilege. Except as
otherwise herein provided, the rights and remedies herein provided shall be
cumulative and not exclusive of any rights or remedies provided by law.

         9.4. Counterparts. This Agreement may be executed in any number of
counterparts, each such counter part being deemed to be an original instrument,
and all such counterparts shall together constitute the same agreement.

         9.5. GOVERNING LAW AND VENUE; WAIVER OF JURY TRIAL.

              (a) THIS AGREEMENT SHALL BE DEEMED TO BE MADE IN AND IN ALL
RESPECTS SHALL BE INTERPRETED, CONSTRUED AND GOVERNED BY AND IN ACCORDANCE WITH
THE LAW OF THE STATE OF DELAWARE WITHOUT REGARD TO THE CONFLICT OF LAW
PRINCIPLES THEREOF. The parties hereby irrevocably submit to the jurisdiction of
the Federal courts of the United States of America and the state courts located
in the State of Delaware solely in respect of the interpretation and enforcement
of the provisions of this Agreement and of the documents referred to in this
Agreement, and in respect of the transactions contemplated hereby, and hereby
waive, and agree not to assert, as a defense in any action, suit or proceeding
for the interpretation or enforcement hereof or of any such document, that it is
not subject thereto or that such action, suit or proceeding may not be brought
or is not maintainable in said courts or that the venue thereof may not be
appropriate or that this Agreement or any such document may not be enforced in
or by such courts, and the parties hereto irrevocably agree that all claims with
respect to such action or proceeding shall be heard and determined in such a
Federal or state court. The parties hereby consent to and grant any such court
jurisdiction over


                                      A-66


<PAGE>


the Person of such parties and over the subject matter of such dispute and agree
that mailing of process or other papers in connection with any such action or
proceeding in the manner provided in Section 9.6 or in such other manner as may
be permitted by law, shall be valid and sufficient service thereof.

              (b) EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH
MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT
ISSUES, AND THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY
WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY
LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT,
OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT. EACH PARTY CERTIFIES AND
ACKNOWLEDGES THAT (i) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY
HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE
EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (ii) EACH SUCH PARTY
UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (iii) EACH SUCH
PARTY MAKES THIS WAIVER VOLUNTARILY, AND (iv) EACH SUCH PARTY HAS BEEN INDUCED
TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND
CERTIFICATIONS IN THIS SECTION 9.5.

         9.6. Notices. Notices, requests, instructions or other documents to be
given under this Agreement shall be in writing and shall be deemed given, (i)
when sent if sent by facsimile, provided that the fax is promptly confirmed by
telephone confirmation thereof, (ii) when delivered, if delivered personally to
the intended recipient, and (iii) one business day later, if sent by overnight
delivery via a national courier service, and in each case, addressed to a party
at the following address for such party:

                  if to SBC or Merger Sub

                  SBC Communications Inc.
                  175 E. Houston
                  San Antonio, Texas 78205
                  Attention:  James D. Ellis, Esq.
                  Fax: (210) 351-2298


                                      A-67


<PAGE>


         with a copy to:

                  Benjamin F. Stapleton, Esq.
                  Sullivan & Cromwell
                  125 Broad Street
                  New York, NY  10004
                  Fax:  (212) 558-3588

         if to the Company

                  Ameritech Corporation
                  30 S. Wacker Drive
                  Chicago, Illinois 60606
                  Attention: Chairman of the Board, President and Chief 
                             Executive Officer
                  Fax: (312) 207-0892

         with copies to:

                  Ameritech Corporation
                  30 S. Wacker Drive
                  Chicago, Illinois 60606
                  Attention: Executive Vice President and General Counsel
                  Fax: (312) 207-1540

         and

                  Ameritech Corporation
                  30 S. Wacker Drive
                  Chicago, Illinois 60606
                  Attention: Assistant General Counsel - Transactions
                  Fax: (312) 207-0086

         and


                                      A-68


<PAGE>


                  Charles W. Mulaney, Jr., Esq.
                  Skadden, Arps, Slate, Meagher & Flom (Illinois)
                  333 W. Wacker Dr.
                  Chicago, Illinois 60606
                  Fax:  (312) 407-0411

or to such other persons or addresses as may be designated in writing by the
party to receive such notice as provided above.

         9.7. Entire Agreement. This Agreement (including any exhibits hereto),
the Confidentiality Agreement, the Company Disclosure Letter and the SBC
Disclosure Letter constitute the entire agreement, and supersede all other prior
agreements, understandings, representations and warranties both written and
oral, among the parties, with respect to the subject matter hereof. EACH PARTY
HERETO AGREES THAT, EXCEPT FOR THE REPRESENTATIONS AND WARRANTIES CONTAINED IN
THIS AGREEMENT, NEITHER SBC AND MERGER SUB NOR THE COMPANY MAKES ANY OTHER
REPRESENTATIONS OR WARRANTIES, AND EACH HEREBY DISCLAIMS ANY OTHER
REPRESENTATIONS OR WARRANTIES MADE BY ITSELF OR ANY OF ITS OFFICERS, DIRECTORS,
EMPLOYEES, AGENTS, FINANCIAL AND LEGAL ADVISORS OR OTHER REPRESENTATIVES, WITH
RESPECT TO THE EXECUTION AND DELIVERY OF THIS AGREEMENT OR THE TRANSACTIONS
CONTEMPLATED HEREBY, NOTWITHSTANDING THE DELIVERY OR DISCLOSURE TO THE OTHER OR
THE OTHER'S REPRESENTATIVES OF ANY DOCUMENTATION OR OTHER INFORMATION WITH
RESPECT TO ANY ONE OR MORE OF THE FOREGOING.

         9.8. No Third Party Beneficiaries.  Except as provided in Section 6.12
(Indemnification; Directors' and Officers' Insurance), this Agreement is not
intended to confer upon any Person other than the parties hereto any rights or
remedies hereunder.

         9.9. Obligations of SBC and of the Company. Whenever this Agreement
requires a Subsidiary of SBC to take any action, such requirement shall be
deemed to include an undertaking on the part of SBC to cause such Subsidiary to
take such action. Whenever this Agreement requires a Subsidiary of the Company
to take any action, such


                                      A-69


<PAGE>


requirement shall be deemed to include an undertaking on the part of the Company
to cause such Subsidiary to take such action and, after the Effective Time, on
the part of the Surviving Corporation to cause such Subsidiary to take such
action.

         9.10. Severability. The provisions of this Agreement shall be deemed
severable and the invalidity or unenforceability of any provision shall not
affect the validity or enforceability or the other provisions hereof. If any
provision of this Agreement, or the application thereof to any Person or any
circumstance, is invalid or unenforceable, (a) a suitable and equitable
provision shall be substituted therefor in order to carry out, so far as may be
valid and enforceable, the intent and purpose of such invalid or unenforceable
provision and (b) the remainder of this Agreement and the application of such
provision to other Persons or circumstances shall not be affected by such
invalidity or unenforceability, nor shall such invalidity or unenforceability
affect the validity or enforceability of such provision, or the application
thereof, in any other jurisdiction.

         9.11. Interpretation. The table of contents and headings herein are
for convenience of reference only, do not constitute part of this Agreement and
shall not be deemed to limit or otherwise affect any of the provisions hereof.
Where a reference in this Agreement is made to a Section or Exhibit, such
reference shall be to a Section of or Exhibit to this Agreement unless otherwise
indicated. Whenever the words "include," "includes" or "including" are used in
this Agreement, they shall be deemed to be followed by the words "without
limitation."

         9.12. Captions. The Article, Section and paragraph captions herein are
for convenience of reference only, do not constitute part of this Agreement and
shall not be deemed to limit or otherwise affect any of the provisions hereof.

         9.13. Assignment. This Agreement shall not be assignable by operation
of law or otherwise; provided,


                                      A-70


<PAGE>


however, that SBC may designate prior to the Effective Time, by written notice
to the Company, another wholly-owned direct or indirect Subsidiary to be a party
to the Merger in lieu of Merger Sub, in which event all references herein to
Merger Sub shall be deemed references to such other Subsidiary (except with
respect to representations and warranties made herein with respect to Merger Sub
as of the date hereof) and all representations and warranties made herein with
respect to Merger Sub as of the date hereof shall also be made with respect to
such other subsidiary as of the date of such designation. Any assignment in
contravention of the preceding sentence shall be null and void.


                                      A-71


<PAGE>


         IN WITNESS WHEREOF, this Agreement has been duly executed and delivered
by the duly authorized officers of the parties hereto as of the date first
written above.


                                            AMERITECH CORPORATION



                                            By:  /s/ Richard C. Notebaert
                                                --------------------------------
                                                Name:  Richard C. Notebaert
                                                Title: Chairman, President and 
                                                       Chief Executive Officer


                                            SBC COMMUNICATIONS INC.



                                            By:  /s/ Edward E. Whitacre, Jr.
                                                --------------------------------
                                                Name:  Edward E. Whitacre, Jr.
                                                Title: Chairman and
                                                       Chief Executive Officer


                                            SBC DELAWARE, INC.



                                            By:  /s/ Edward E. Whitacre, Jr.
                                                --------------------------------
                                                Name:  Edward E. Whitacre, Jr.
                                                Title: President
























                                     A-72


<PAGE>

                                                                      EXHIBIT A

                       FORM OF COMPANY AFFILIATE'S LETTER


_______, 1998




SBC Communications Inc.
175 E. Houston
San Antonio, TX   78205

Ladies and Gentlemen:

The undersigned is a holder of shares of Common Stock, $1.00 par value per share
("Company Common Stock"), of Ameritech Corporation, a Delaware corporation (the
"Company"). Pursuant to the terms of that certain Agreement and Plan of Merger,
dated as of May 10, 1998, among the Company, SBC Communications Inc., a Delaware
corporation ("SBC"), and SBC (Delaware), Inc., a Delaware corporation and a
wholly-owned subsidiary of SBC ("Merger Sub"), Merger Sub will be merged with
and into the Company and the Company will become a wholly owned subsidiary of
SBC (the "Merger"). In connection with the Merger, the undersigned, as a holder
of Company Common Stock, will be entitled to receive Common Stock, par value
$1.00 per share, of SBC (the "Securities") in exchange for the shares of Company
Common Stock held by the undersigned at the effective time of the Merger.

The undersigned acknowledges that the undersigned may be deemed an "affiliate"
of the Company within the meaning of Rule 145 ("Rule 145") promulgated under the
Securities Act of 1933, as amended (the "Act"), and/or as such term is used in
and for purposes of Accounting Series Release Nos. 130 and 135, as amended, of
the Securities and Exchange Commission (the "Commission"), although nothing
contained herein shall be construed as an admission of such status.

If in fact the undersigned were an affiliate of the Company under the Act, the
undersigned's ability to sell, assign or transfer any Securities received by the
undersigned in exchange for any shares of Company Common Stock pursuant to the
Merger may be restricted unless such sale, assignment or transfer is registered
under the Act or an exemption from such registration is available. The
undersigned understands that such exemptions are limited and the undersigned has
obtained advice of counsel as to the nature and conditions of such exemptions,
including information with respect to the


                                       A-A-1

<PAGE>


SBC Communications Inc.
_______, 1998
Page 2

applicability to the sale of such Securities of Rules 144 and 145(d) promulgated
under the Act.

The undersigned hereby represents to and covenants with SBC that it will not
sell, assign or transfer any Securities received by the undersigned in exchange
for shares of Company Common Stock pursuant to the Merger except (i) pursuant to
an effective registration statement under the Act, (ii) by a sale made in
conformity with the volume and other limitations of Rule 145 (and otherwise in
accordance with Rule 144 under the Act, if the undersigned is an affiliate of
SBC and if so required at the time) or (iii) in a transaction which, in the
opinion of independent counsel reasonably satisfactory to the Company or as
described in a "no-action" or interpretive letter from the Staff of the
Commission reasonably satisfactory to SBC, is not required to be registered
under the Act.

The undersigned understands that SBC is under no obligation to register the
sale, assignment, transfer or other disposition of the Securities by the
undersigned or on behalf of the undersigned under the Act or to take any other
action necessary in order to make compliance with an exemption from such
registration available solely as a result of the Merger.

In the event of a sale of Securities pursuant to Rule 145, the undersigned will
supply SBC with evidence of compliance with such Rule, in the form of customary
seller's and broker's Rule 145 representation letters or as SBC may otherwise
reasonably request. The undersigned understands that SBC may instruct its
transfer agent to withhold the transfer of any Securities disposed of by the
undersigned in a manner inconsistent with this letter.

The undersigned acknowledges and agrees that appropriate legends will be placed
on certificates representing Securities received by the undersigned in the
Merger or held by a transferee thereof, which legends will be removed (i) by
delivery of substitute certificates upon receipt of a letter from the staff of
the Commission, or an opinion of counsel in form and substance reasonably
satisfactory to SBC, to the effect that such legends are no longer required for
the purposes of the Act and the rules and regulations of the Commission
promulgated thereunder, (ii) in the event of a sale of the Securities which has
been registered under the Act or made in conformity with the provisions of Rule
145.

The undersigned further represents to and covenants with SBC that (i) the
undersigned will not, during the 30 days prior to the effective time of the
Merger sell, transfer or otherwise dispose of, or reduce any risk relative to,
any securities of the Company or


                                      A-A-2

<PAGE>


SBC Communications Inc.
_______, 1998
Page 3

SBC, and (ii) the undersigned will not, after the effective time of the Merger,
sell, transfer or otherwise dispose of, or reduce any risk relative to, the
Securities, whether received by the undersigned in the Merger or otherwise,
until after such time as financial results covering at least 30 days of
post-Merger operations of SBC (including the combined operations of the Company
and SBC) have been published by SBC in the form of a quarterly earnings report,
an effective registration statement filed with the Commission, a report to the
Commission on Form 10-K, 10-Q or 8-K, or any other public filing or announcement
which includes such results of operations, except in the cases of clauses (i)
and (ii) of this paragraph to the extent permitted by, and in accordance with,
SEC Accounting Series Release 135 and SEC Staff Accounting Bulletins 65 and 76
if and to the extent that such release and bulletins remain in full force and
effect at the relevant time.

I further understand and agree that this letter agreement shall apply to all
shares of Company Common Stock and Securities that I am deemed to beneficially
own pursuant to applicable federal securities law.

The undersigned acknowledges that it has carefully reviewed this letter and
understands the requirements hereof and the limitations imposed upon the
distribution, sale, transfer or other disposition of Securities.

Sincerely,



[NAME OF COMPANY AFFILIATE]


                                       A-A-3

<PAGE>


                                                                      EXHIBIT B

                         FORM OF SBC AFFILIATE'S LETTER


_______, 1998




SBC Communications Inc.
175 E. Houston
San Antonio, TX   78205

Ladies and Gentlemen:

The undersigned is a holder of shares of Common Stock, par value $1.00 per share
(the "Securities"), of SBC Communications Inc., a Delaware corporation ("SBC").
Pursuant to the terms of that certain Agreement and Plan of Merger, dated as of
May 10, 1998, among Ameritech Corporation, a Delaware corporation (the
"Company"), SBC and SBC Delaware, Inc., a Delaware corporation and a
wholly-owned subsidiary of SBC ("Merger Sub"), Merger Sub will be merged with
and into the Company and the Company will become a wholly owned subsidiary of
SBC (the "Merger").

The undersigned acknowledges that the undersigned may be deemed an "affiliate"
of SBC as such term is used in and for purposes of Accounting Series Release
Nos. 130 and 135, as amended, of the Securities and Exchange Commission (the
"Commission"), although nothing contained herein shall be construed as an
admission of such status.

The undersigned hereby represents to and covenants with SBC that the undersigned
will not, during the 30 days prior to the effective time of the Merger sell,
transfer or otherwise dispose of, or reduce any risk relative to, the Securities
or any other shares of the capital stock of SBC until after such time as
financial results covering at least 30 days of post-Merger operations of SBC
(including the combined operations of the Company and SBC) have been published
by SBC in the form of a quarterly earnings report, an effective registration
statement filed with the Commission, a report to the Commission on Form 10-K,
10-Q or 8-K, or any other public filing or announcement which includes such
results of operations, except to the extent permitted by, and in accordance
with, SEC Accounting Series Release 135 and SEC Staff Accounting Bulletins 65
and 76 if and to the extent that such release and bulletins remain in full force
and effect at the relevant time.


                                      A-B-1

<PAGE>


SBC Communications Inc.
_______, 1998
Page 2

I further understand and agree that this letter agreement shall apply to all
Securities that I am deemed to beneficially own pursuant to applicable federal
securities law.

The undersigned acknowledges that the undersigned has carefully reviewed this
letter and understands the requirements hereof and the limitations imposed upon
the sale, transfer or other disposition of Securities.

Sincerely,



[NAME OF SBC AFFILIATE]


                                      A-B-2


<PAGE>



                                     ANNEX B


                         Opinion of Salomon Smith Barney

                                    [To Come]































                                       B-1




<PAGE>



                                     ANNEX C


                         Opinion of Goldman, Sachs & Co.

                                    [To Come]

































                                       C-1


<PAGE>



                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS


ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         The SBC Bylaws provide that SBC will indemnify any person who was or is
a party or is threatened to be made a party to any action,  suit or  proceeding,
whether civil, criminal,  administrative or investigative  (including any action
or suit by or in the right of SBC) by reason of the fact that such  person is or
was a  director,  officer,  employee or agent of SBC or is or was serving at the
request of SBC as a director, officer, employee or agent of another corporation,
partnership,   joint  venture,  trust  or  other  enterprise,  against  expenses
(including  attorneys'  fees),  judgments,  fines and amounts paid in settlement
actually and reasonably  incurred by such person in connection with such action,
suit or proceeding,  but in each case only if and to the extent  permitted under
applicable state or federal law.

         The SBC Bylaws further state that the indemnification  provided therein
will not be deemed exclusive of any other rights to which those  indemnified may
be entitled,  and will  continue as to a person who has ceased to be a director,
officer,  employee  or agent and will inure to the  benefit  of the  heirs,  and
personal representatives of such a person.

         Section  145 of  the  DGCL  permits  a  corporation  to  indemnify  its
directors and officers against expenses (including attorneys' fees),  judgments,
fines and amounts paid in settlements  actually and reasonably  incurred by them
in connection with any action,  suit or proceeding brought by third parties,  if
such directors or officers  acted in good faith and in a manner they  reasonably
believed to be in or not opposed to the best interests of the  corporation  and,
with  respect to any  criminal  action or  proceeding,  had no reason to believe
their conduct was unlawful. In a derivative action, i.e., one by or in the right
of the corporation,  indemnification  may be made only for expenses actually and
reasonably  incurred by directors and officers in connection with the defense or
settlement  of an action or suit,  and only with respect to a matter as to which
they will have acted in good faith and in a manner they  reasonably  believed to
be in or not opposed to the best  interests of the  corporation,  except that no
indemnification  will be made if such person will have been  adjudged  liable to
the  corporation,  unless  and only to the  extent  that the  court in which the
action or suit was brought will  determine upon  application  that the defendant
officers or directors are fairly and  reasonably  entitled to indemnity for such
expenses despite such adjudication of liability.

         The SBC Restated  Certificate  provides that no director of SBC will be
liable to SBC or its  shareowners  for monetary  damages for breach of fiduciary
duty as a director,  except for liability  (1) for any breach of the  director's
duty of loyalty to SBC or its shareowners; (2) for acts or omissions not in good
faith or which involve  intentional  misconduct or knowing violation of the law;
(3) under  Section  174 of the DGCL;  or (4) for any  transaction  from  which a
director derived an improper benefit.



<PAGE>



ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

         (a) Exhibits

  Exhibit
  Number
- -----------

      2        Agreement and Plan of Merger, among Ameritech, SBC and Merger
               Sub, dated as of May 10, 1998 (included as Annex A to the Joint
               Proxy Statement/Prospectus contained in this Registration
               Statement).

    3-a        Restated Certificate of Incorporation of SBC, filed with the
               Secretary of State of the State of Delaware on April 29, 1996
               (incorporated herein by reference to Exhibit 3 to Form 10-Q (File
               No. 1-8610), dated March 31, 1996).

    3-b        Certificate of Incorporation of Ameritech, filed with the
               Secretary of State of the State of Delaware on October 18, 1983,
               as amended on April 30, 1996 (incorporated herein by reference to
               Exhibit 3a to Form 10-Q for the quarter ended March 31, 1996
               (file No. 1-8612)).

    3-c        By-Laws of SBC, dated January 30, 1998 (incorporated herein by
               reference to Exhibit 3a to Form 8-K dated March 5, 1998 (file No.
               1-8610)).

    3-d        By-Laws of Ameritech, as amended on March 19, 1997 (incorporated
               herein by reference to Exhibit 3b to Form 10-Q for the quarter
               ended March 31, 1997 (file No. 1-8612)).

     4         See Exhibits 3-a and 3-c for provisions of SBC Restated
               Certificate and SBC By-laws defining rights of holders of SBC
               Common Stock.

     5         Opinion of James D. Ellis, Senior Executive Vice President and
               General Counsel of SBC, regarding validity of securities being
               registered.*

     8-a       Opinion of Sullivan & Cromwell regarding certain federal income
               tax consequences.*

     8-b       Opinion of Skadden, Arps, Slate, Meagher & Flom (Illinois)
               regarding certain federal income tax matters.*

     23-a      Consent of Ernst & Young LLP.**

     23-b      Consent of Arthur Andersen LLP.**

     23-c      Consent of Coopers & Lybrand L.L.P. (Hartford, CT).**

     23-d      Consent of Coopers & Lybrand L.L.P. (San Francisco, CA).**

     23-e      Consent of James D. Ellis, Senior Executive Vice President and
               General Counsel of SBC. (Included in the opinion filed as Exhibit
               5 to this Registration Statement and incorporated herein by
               reference).*

     23-f      Consent of Sullivan & Cromwell (Included in the opinion filed as
               Exhibit 8-a to this Registration Statement and incorporated
               herein by reference).*

     23-g      Consent of Skadden, Arps, Slate, Meagher & Flom (Illinois).
               (Included in the opinion filed as Exhibit 8-b to this
               Registration Statement and incorporated herein by reference).*

____________
*   To be filed by Amendment

**  Filed herewith

<PAGE>


     23-h      Consent of Salomon Brothers Inc and Smith Barney Inc.*

     23-i      Consent of Goldman, Sachs & Co.*

     24        Powers of Attorney.**

     99-a      Form of Proxy Card of Ameritech.**

     99-b      Form of Proxy Card of SBC.**

     99-c      Opinion of Salomon Smith Barney (included as Annex B to the Joint
               Proxy Statement/Prospectus contained in this Registration
               Statement).*

     99-d      Opinion of Goldman, Sachs & Co. (included as Annex C to the Joint
               Proxy Statement/Prospectus contained in this Registration
               Statement).*

ITEM 22. UNDERTAKINGS.

    (a)  The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement;

             (i) To include any prospectus  required by Section  10(a)(3) of the
    Securities Act of 1933,

            (ii) To  reflect in the prospectus any facts or events arising after
    the  effective  date  of the  Registration  Statement  (or the  most  recent
    post-effective  amendment thereof) which,  individually or in the aggregate,
    represent  a  fundamental  change  in  the  information  set  forth  in  the
    Registration  Statement.  Notwithstanding  the  foregoing,  any  increase or
    decrease  in volume of  securities  offered  (if the total  dollar  value of
    securities  offered  would not  exceed  that which was  registered)  and any
    deviation from the low or high end of the estimated  maximum  offering range
    may be reflected in the form of  prospectus  filed with the  Securities  and
    Exchange  Commission  pursuant  to Rule  424(b)  if, in the  aggregate,  the
    changes in volume and price  represent no more than 20 percent change in the
    maximum   aggregate   offering  price  set  forth  in  the  "Calculation  of
    Registration Fee" table in the effective registration statement; and

           (iii)  To  include any material  information with respect to the plan
    of distribution not previously  disclosed in the  Registration  Statement or
    any material change to such information in the Registration Statement.

         (2) That,  for the  purpose  of  determining  any  liability  under the
Securities Act of 1933, each such post-effective  amendment will be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such  securities  at that time will be deemed to be the initial bona
fide offering thereof.

         (3) To remove from registration by means of a post-effective  amendment
any of the securities which remain unsold at the termination of the offering;

provided,  however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the
Registration Statement is on Form S-3, Form S-8 or Form F-3, and the information
required to be included in a  post-effective  amendment by those  paragraphs  is
contained in periodic  reports  filed with or furnished  to the  Securities  and
Exchange  Commission  by the  registrant  pursuant to Section 13 or 15(d) of the
Securities  Exchange  Act of 1934  that are  incorporated  by  reference  in the
Registration Statement.

    (b) The  undersigned  registrant  hereby  undertakes  that,  for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
Registrant's  annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange  Act of 1934 that is  incorporated  by  reference  in the  Registration
Statement will be deemed to be a new


____________
*   To be filed by AMendment

**  Filed herewith


<PAGE>



registration  statement  relating to the  securities  offered  therein,  and the
offering of such  securities  at that time will be deemed to be the initial bona
fide offering thereof.

    (c) (1) The undersigned  registrant hereby undertakes as follows: that prior
to any public reoffering of the securities registered hereunder through use of a
prospectus  which is a part of this  Registration  Statement,  by any  person or
party who is deemed to be an underwriter  within the meaning of Rule 145(c), the
issuer  undertakes that such reoffering  prospectus will contain the information
called for by the  applicable  registration  form with respect to reofferings by
persons who may be deemed  underwriters,  in addition to the information  called
for by the other items of the applicable form.

        (2) The undersigned  registrant  hereby undertakes that every prospectus
(i) that is filed pursuant to paragraph (1) immediately preceding,  or (ii) that
purports to meet the  requirements of Section 10(a)(3) of the Act and is used in
connection with an offering of securities  subject to Rule 415, will be filed as
a part of an amendment to the Registration  Statement and will not be used until
such amendment is effective, and that, for purposes of determining any liability
under the Securities  Act of 1933,  each such  post-effective  amendment will be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such  securities at that time will be deemed to be
the initial bona fide offering thereof.

    (d) Insofar as indemnification  for liabilities arising under the Securities
Act of 1933 may be permitted to directors,  officers and controlling  persons of
the  registrant  pursuant  to  the  foregoing  provisions,   or  otherwise,  the
registrant  has been advised that in the opinion of the  Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore,  unenforceable. In the event that a claim for indemnification
against such  liabilities  (other than the payment by the registrant of expenses
incurred or paid by a director,  officer or controlling person of the registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

    (e) The undersigned  registrant hereby undertakes to respond to requests for
information  that is incorporated  by reference into the prospectus  pursuant to
Item 4, 10(b), 11 or 13 of this form, within one business day of receipt of such
request,  and to send the  incorporated  documents  by first class mail or other
equally prompt means.  This includes  information  contained in documents  filed
subsequent to the effective date of the registration  statement through the date
of responding to the request.

    (f) The  undersigned  registrant  hereby  undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and Ameritech
being acquired involved therein, that was not the subject of and included in the
registration statement when it became effective.




<PAGE>



                                   SIGNATURES


    Pursuant to the  requirements  of the Securities Act of 1933, the registrant
certifies  that is has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing  on Form S-4 and has  duly  caused  this  Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized,  in the City of San Antonio, State of Texas, on the 4th day of June,
1998.

                                            SBC Communications Inc.
                                            (Registrant)


                                            By:/s/Donald E. Kiernan
                                               ---------------------------------
                                               Donald E. Kiernan
                                               Senior Vice President, Treasurer
                                               and Chief Financial Officer

    Pursuant  to  the   requirements   of  the  Securities  Act  of  1933,  this
Registration  Statement  has been signed below by the  following  persons in the
capacities and on the date indicated.

Principal Executive Officer:                   Edward E. Whitacre, Jr.,*
                                               Chairman and Chief Executive 
                                                Officer

Principal Financial and Accounting Officer:  Donald E. Kiernan,
                                               Senior Vice President, Treasurer
                                               and Chief Financial Officer


                                             By:/s/Donald E. Kiernan
                                                --------------------------------
                                                Donald E. Kiernan, as attorney-
                                                in-fact for Mr. Whitacre, the 
                                                Directors, and on his own behalf
                                                as Principal Financial Officer 
                                                and Principal Accounting Officer

DIRECTORS:                                      June 4, 1998
Edward E. Whitacre, Jr.*
Clarence C. Barksdale*
August A. Busch III*
Royce S. Caldwell*
Ruben R. Cardenas*
William P. Clark*
Martin K. Eby, Jr.*
Herman E. Gallegos*
Jess T. Hay*
Bobby R. Inman*
Charles F. Knight*
Mary S. Metz*
Haskell M. Monroe, Jr.*
Toni Rembe*
S. Donley Ritchey*
Richard M. Rosenberg*
Carlos Slim Helu*
Patricia P. Upton*










- --------
*  By power of attorney







                                                                    EXHIBIT 23-a



                         Consent of Independent Auditors

We  consent  to the  reference  to our firm  under the  captions  "Experts"  and
"Selected  Historical  and Unaudited Pro Forma Combined  Financial  Data" in the
Registration  Statement (Form S-4) and related Joint Proxy  Statement/Prospectus
of Ameritech  Corporation and SBC Communications Inc. (SBC) for the registration
of shares of Common Stock of SBC and to the  incorporation by reference  therein
of our  reports  dated  February  20,  1998,  with  respect to the  consolidated
financial  statements  and  schedules  of SBC  included  in or  incorporated  by
reference in its Annual Report (Form 10-K) for the year ended December 31, 1997,
filed with the Securities and Exchange Commission.




                                               /s/ Ernst & Young LLP

San Antonio, Texas
June 2, 1998







                                                                    EXHIBIT 23-b



                    Consent of Independent Public Accountants

As independent  public  accountants,  we hereby consent to the  incorporation by
reference in this Registration Statement on Form S-4 and the related Joint Proxy
Statement/Prospectus of Ameritech Corporation (Ameritech) and SBC Communications
Inc.  of our  reports  dated  January  13, 1998  included  and  incorporated  by
reference in Ameritech's  Annual Report on Form 10-K for the year ended December
31,  1997  and to all  references  to our  Firm  included  in this  Registration
Statement and the related Joint Proxy Statement/Prospectus.



                                            /s/ Arthur Andersen LLP



Chicago, Illinois
June 4, 1998















                                                                    EXHIBIT 23-c



                       Consent of Independent Accountants

We consent to the incorporation by reference in this  registration  statement of
SBC   Communications   Inc.   on  Form   S-4  and  the   related   Joint   Proxy
Statement/Prospectus of Ameritech Corporation and SBC Communications Inc. of our
reports dated January 27, 1998, which includes an explanatory  paragraph related
to the  discontinuance  of  SFAS  No.  71,  "Accounting  for  Certain  Types  of
Regulation",  effective  January  1,  1996,  on our  audits of the  consolidated
financial  statements  and the  financial  statement  schedule of  Southern  New
England Telecommunications Corporation ("SNET") as of December 31, 1997 and 1996
and for the three years in the period ended December 31, 1997, which reports are
included or incorporated by reference in SNET's 1997 Annual Report on Form 10-K.
We also consent to the reference to our Firm under the caption "Experts".




                                         /s/ Coopers & Lybrand L.L.P.

Hartford, Connecticut
June 4, 1998








                                                                    EXHIBIT 23-d



                       CONSENT OF INDEPENDENT ACCOUNTANTS

We consent to the  reference  to our firm under the  caption  "experts"  in this
Registration Statement on Form S-4 and related Joint Proxy  Statement/Prospectus
of  Ameritech   Corporation  and  SBC   Communications   Inc.  ("SBC")  for  the
registration of shares of SBC Common Stock and to the incorporation by reference
therein of our report dated February 27, 1997 on our audits of the  consolidated
financial  statements and financial  statement schedule of Pacific Telesis Group
and  Subsidiaries  as of December 31, 1996, and for each of the two years in the
period then ended, which is included in SBC's Annual Report on Form 10-K for the
year ended December 31, 1997.




                                        /s/ Coopers & Lybrand L.L.P.


San Francisco, California
June 3, 1998







                                                                      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 at Washington,  D.C., under the provisions of the Securities
Act of 1933, as amended,  a Registration  Statement on Form S-4 for the issuance
of shares of the  Corporation's  Common Stock  pursuant to the merger  agreement
among Ameritech Corporation,  the Corporation, and SBC Delaware, Inc., dated May
10, 1998; 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., Roger W. Wohlert, 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  Registration  Statement,  and
thereafter to execute and file any and all amended  registration  statements and
amended  prospectuses  or amendments  or  supplements  to any of the  foregoing,
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 will lawfully do, or
cause to be done, by virtue hereof.

    IN WITNESS  WHEREOF,  the undersigned has hereunto set his hand the date set
forth below.



/s/Edward E. Whitacre, Jr.                                          May 27, 1998
- ---------------------------------------           ------------------------------
   Edward E. Whitacre, Jr.                                             Date
   Chairman of the Board and
   Chief Executive Officer





<PAGE>


                                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 at Washington,  D.C., under the provisions of the Securities
Act of 1933, as amended,  a Registration  Statement on Form S-4 for the issuance
of shares of the  Corporation's  Common Stock  pursuant to the merger  agreement
among Ameritech Corporation,  the Corporation, and SBC Delaware, Inc., dated May
10, 1998; 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., Roger W. Wohlert, 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  Registration  Statement,  and
thereafter to execute and file any and all amended  registration  statements and
amended  prospectuses  or amendments  or  supplements  to any of the  foregoing,
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 will lawfully do, or
cause to be done, by virtue hereof.

    IN WITNESS  WHEREOF,  the undersigned has hereunto set his hand the date set
forth below.




/s/Royce S. Caldwell                                              May 27, 1998
- ------------------------------------------------  ------------------------------
   Royce S. Caldwell                                                   Date
   President -- SBC Operations and Director




<PAGE>

                                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 at Washington,  D.C., under the provisions of the Securities
Act of 1933, as amended,  a Registration  Statement on Form S-4 for the issuance
of shares of the  Corporation's  Common Stock  pursuant to the merger  agreement
among Ameritech Corporation,  the Corporation, and SBC Delaware, Inc., dated May
10, 1998; and

    WHEREAS, each of the undersigned is a director of the Corporation;

    NOW,  THEREFORE,  each of the  undersigned  hereby  constitutes and appoints
Edward E. Whitacre,  Jr., James D. Ellis, Donald E. Kiernan,  Alfred G. Richter,
Jr.,  Roger W. Wohlert,  or any one of them,  all of the City of San Antonio and
State of Texas,  the  undersigned's  attorneys  for the  undersigned  and in the
undersigned's  name,  place and  stead,  and in the  undersigned's  offices  and
capacities in the Corporation,  to execute and file such Registration Statement,
and thereafter to execute and file any and all amended  registration  statements
and amended  prospectuses  or amendments or supplements to any of the foregoing,
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 will lawfully do, or
cause to be done, by virtue hereof.

    IN WITNESS WHEREOF, each of the undersigned has hereunto set his or her hand
the date set forth below.



/s/Clarence C. Barksdale                                            May 29, 1998
- -------------------------------------        -----------------------------------
   Clarence C. Barksdale                                   Date
   Director



/s/August A. Busch III                                             May 27, 1998
- -------------------------------------        -----------------------------------
   August A. Busch III                                     Date
   Director



/s/Ruben R. Cardenas                                               May 27, 1998
- -------------------------------------        -----------------------------------
   Ruben R. Cardenas                                       Date
   Director



/s/William P. Clark                                                May 27, 1998
- -------------------------------------        -----------------------------------
   William P. Clark                                        Date
   Director



/s/Martin K. Eby, Jr.                                              May 28, 1998
- -------------------------------------        -----------------------------------
   Martin K. Eby, Jr.                                      Date
   Director



/s/Herman E. Gallegos                                               May 28, 1998
- -------------------------------------        -----------------------------------
   Herman E. Gallegos                                      Date
   Director




<PAGE>




/s/Jess T. Hay                                                      May 28, 1998
- -------------------------------------        -----------------------------------
   Jess T. Hay                                             Date
   Director



/s/Bobby R. Inman                                                   May 30, 1998
- -------------------------------------        -----------------------------------
   Bobby R. Inman                                          Date
   Director



/s/Charles F. Knight                                                May 26, 1998
- -------------------------------------        -----------------------------------
   Charles F. Knight                                       Date
   Director



/s/Mary S. Metz                                                    May 28, 1998
- -------------------------------------        -----------------------------------
   Mary S. Metz                                            Date
   Director



/s/Haskell M. Monroe, Jr.                                           May 27, 1998
- -------------------------------------        -----------------------------------
   Haskell M. Monroe, Jr.                                  Date
   Director



/s/Toni Rembe                                                      June 3, 1998
- -------------------------------------        -----------------------------------
   Toni Rembe                                              Date
   Director



/s/S. Donley Ritchey                                                May 29, 1998
- -------------------------------------        -----------------------------------
   S. Donley Ritchey                                       Date
   Director



/s/Richard M. Rosenberg                                            May 27, 1998
- -------------------------------------        -----------------------------------
   Richard M. Rosenberg                                    Date
   Director



/s/Carlos Slim Helu                                                June 2, 1998
- -------------------------------------        -----------------------------------
   Carlos Slim Helu                                        Date
   Director



/s/Patricia P. Upton                                               May 27, 1998
- -------------------------------------        -----------------------------------
   Patricia P. Upton                                       Date
   Director






                                                                    EXHIBIT 99-a

                              AMERITECH CORPORATION
         THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF
                              AMERITECH CORPORATION
                               30 S. WACKER DRIVE
                             CHICAGO, ILLINOIS 60606

       For the Special Meeting of Shareowners on __________________, 1998

    The  undersigned  hereby (1)  acknowledges  receipt of the Notice of Special
Meeting  of  Shareowners   (the  "Ameritech   Special   Meeting")  of  Ameritech
Corporation, a Delaware corporation ("Ameritech"),  to be held on [O ], 1998, at
[o ], local time, at [o ] and the Joint Proxy Statement/Prospectus in connection
therewith, and (2) appoints  [_________________ and _________________,] and each
of them, his or her proxies with full power of substitution for and in the name,
place, and stead of the undersigned, to vote upon and act with respect to all of
the shares of common stock, $1.00 par value per share, of Ameritech  ("Ameritech
Common Stock") standing in the name of the undersigned, or with respect to which
the  undersigned is entitled to vote and act, at the Ameritech  Special  Meeting
and at any adjournments or postponements thereof.

    The undersigned directs that this proxy be voted as follows:

(1) To adopt a proposal to adopt the Agreement  and Plan of Merger,  dated as of
    May 10, 1998, among Ameritech,  SBC Communications  Inc. ("SBC"), a Delaware
    corporation,  and SBC Delaware,  Inc. ("Merger Sub"), a Delaware corporation
    and a wholly  owned  subsidiary  of SBC (as such  agreement  may be amended,
    supplemented   or  otherwise   modified  from  time  to  time,  the  "Merger
    Agreement").  Pursuant  to the Merger  Agreement,  Merger Sub will be merged
    (the  "Merger")  with and into  Ameritech and Ameritech will become a wholly
    owned subsidiary of SBC.

    |_|  FOR           |_|  AGAINST          |_|  ABSTAIN

(2) In the discretion of the proxies, on such other business related to proposal
    (1) as may  properly  come  before  the  Ameritech  Special  Meeting  or any
    adjournments or postponements thereof.

    THIS PROXY WHEN PROPERLY  EXECUTED WILL BE VOTED AS SPECIFIED  ABOVE.  IF NO
SPECIFICATION  IS MADE,  THIS PROXY WILL BE VOTED FOR THE  PROPOSAL TO ADOPT THE
MERGER AGREEMENT. THE PROXIES CANNOT VOTE YOUR SHARES UNLESS YOU SIGN AND RETURN
THIS CARD.

    This  card  also  serves  as  voting  instructions  for  shares  held in the
Ameritech Direct Services  Investment Plan and, if registrations  are identical,
shares  held in the  Ameritech  Savings  Plan  for  Salaried  Employees  and the
Ameritech  Savings  Plan for  Non-Salaried  Employees  as described in the proxy
statement.

    Notwithstanding  shareholder  adoption  of the Merger  Agreement,  Ameritech
reserves the right to abandon the Merger at any time prior to its  consummation,
subject to the terms and conditions of the Merger Agreement.

    Holders of  Ameritech  Common  Stock will not be  entitled to  appraisal  or
dissenters' rights in connection with the proposal.

    The  undersigned  hereby revokes any proxy  heretofore  given to vote or act
with respect to the Ameritech  Common Stock and hereby ratifies and confirms all
that the proxies,  their  substitutes,  or any of them may lawfully do by virtue
hereof.

    To vote by telephone or Internet,  please see the reverse side of this card.
To vote by mail,  please mark,  sign, date and return this proxy in the enclosed
envelope. No postage is required.

<PAGE>


    Please mark, sign, date and return this proxy in the enclosed  envelope.  No
postage is required.

                               Date: ______________, 1998

                               -----------------------------------
                               Signature of Stockholder

                               -----------------------------------
                               Signature of Stockholder (if jointly held)

                               Please date this proxy and sign your name exactly
                               as it appears  hereon.  Where  there is more than
                               one owner,  each should sign.  When signing as an
                               attorney,  administrator,  executor, guardian, or
                               trustee,  please  add  your  title  as  such.  If
                               executed by a  corporation,  the proxy  should be
                               signed by a duly authorized officer and state the
                               full  name  of  the  corporate  officer  and  the
                               corporation.


                    AMERITECH OFFERS PHONE OR INTERNET VOTING
                          24 hours a day, 7 days a week

- --------------------------------------------------------------------------------
On a touch-tone phone call toll-free 1-800-652-8683 (outside the U.S. and Canada
call 201-324-0377) and you will hear these instructions:
- --------------------------------------------------------------------------------

- -> Enter the last four digits of your social security number; and

- -> Enter the control number from the box just below the perforation on the proxy
   card.

- -> You will then be asked to vote on the proposal to adopt the Merger Agreement.

- -> Your vote will be repeated to you and you will be asked to confirm it.


- --------------------------------------------------------------------------------
Log onto the Internet and type:  http://www.vote-by-net.com
- --------------------------------------------------------------------------------

- -> Have your proxy card ready and follow the simple instructions.

Your electronic proxy authorizes the named proxies to vote your shares to the
same extent as if you marked, signed, dated and returned the proxy card.

  IF YOU HAVE VOTED BY PHONE OR INTERNET, DO NOT RETURN YOUR PROXY CARD.



                              THANK YOU FOR VOTING!






                                                                    EXHIBIT 99-b



                             SBC COMMUNICATIONS INC.
         THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF
                             SBC COMMUNICATIONS INC.
                                175 EAST HOUSTON
                            SAN ANTONIO, TEXAS 78205


    The  undersigned  hereby (1)  acknowledges  receipt of the Notice of Special
Meeting of Shareowners (the "SBC Special Meeting") of SBC Communications Inc., a
Delaware  corporation ("SBC"), to be held on [o ], 1998, at [o ], local time, at
[o ] and the Joint Proxy  Statement/Prospectus in connection therewith,  and (2)
appoints  [________________ and _________________,] and each of them, his or her
proxies with full power of substitution for and in the name, place, and stead of
the  undersigned,  to vote  upon and act with  respect  to all of the  shares of
common stock, $1.00 par value per share, of SBC ("SBC Common Stock") standing in
the name of the  undersigned,  or with  respect  to  which  the  undersigned  is
entitled to vote and act, at the SBC Special Meeting and at any  adjournments or
postponements thereof.

    The undersigned directs that this proxy be voted as follows:

(1) To approve a proposal to issue  shares of SBC Common  Stock  pursuant to the
    Agreement  and Plan of  Merger  dated as of May 10,  1998,  among  Ameritech
    Corporation  ("Ameritech"),  a Delaware  corporation,  SBC and SBC Delaware,
    Inc. ("Merger Sub"), a Delaware corporation and a wholly owned subsidiary of
    SBC (as such agreement may be amended,  supplemented  or otherwise  modified
    from  time  to  time,  the  "Merger  Agreement").  Pursuant  to  the  Merger
    Agreement,  Merger Sub will be merged (the "Merger") with and into Ameritech
    and Ameritech will become a wholly owned subsidiary of SBC.

    |_|  FOR            |_|  AGAINST             |_|  ABSTAIN

(2) A proposal  to adopt an  amendment  to Article II Section 1 of the Bylaws of
    SBC to increase the maximum number of persons that may serve on the Board of
    Directors  of SBC from  twenty-one  (21) to  twenty-five  (25)  (the  "Bylaw
    Amendment").

(3) A  proposal  to  adopt  an  amendment  to  the   Restated   Certificate   of
    Incorporation  of SBC to  increase  the number of shares of  authorized  SBC
    Common  Stock  from  7.0  billion  to  10.0  billion  (the  "Share  Increase
    Proposal").

(4) In the  discretion  of the  proxies,  on  such  other  business  related  to
    proposals  (1),  (2) or (3) as may  properly  come before the meeting or any
    adjournments or postponements thereof.

    THIS PROXY WHEN PROPERLY  EXECUTED WILL BE VOTED AS SPECIFIED  ABOVE.  IF NO
SPECIFICATION IS MADE, THIS PROXY WILL BE VOTED FOR THE PROPOSAL TO ISSUE SHARES
OF SBC COMMON STOCK PURSUANT TO THE MERGER  AGREEMENT,  FOR THE BYLAW  AMENDMENT
AND FOR THE SHARE INCREASE PROPOSAL.  THE PROXIES CANNOT VOTE YOUR SHARES,  WITH
RESPECT TO THE  PROPOSAL  TO ISSUE  SHARES OF SBC COMMON  STOCK  PURSUANT TO THE
MERGER AGREEMENT, UNLESS YOU SIGN AND RETURN THIS CARD.

    Notwithstanding  shareowner approval of the foregoing proposal, SBC reserves
the right to abandon the Merger at any time prior to its  consummation,  subject
to the terms and conditions of the Merger Agreement.


<PAGE>




    Holders of SBC Common Stock will not be entitled to appraisal or dissenters'
rights in connection with the proposals.

    The  undersigned  hereby revokes any proxy  heretofore  given to vote or act
with respect to the SBC Common  Stock and hereby  ratifies and confirms all that
the proxies, their substitutes, or any of them may lawfully do by virtue hereof.








<PAGE>


    Please mark, sign, date, and return this proxy in the enclosed envelope.  No
postage is required.

                               Date: ______________, 1998

                               -------------------------------------------------
                               Signature of Stockholder

                               -------------------------------------------------
                               Signature of Stockholder (if jointly held)


                               Please date this proxy and sign your name exactly
                               as it appears  hereon.  Where  there is more than
                               one owner,  each should sign.  When signing as an
                               attorney,  administrator,  executor, guardian, or
                               trustee,  please  add  your  title  as  such.  If
                               executed by a  corporation,  the proxy  should be
                               signed by a duly authorized officer and state the
                               full name of the corporation.



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