SBC COMMUNICATIONS INC
S-4/A, 1998-08-18
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
Previous: PC&J PERFORMANCE FUND, NSAR-A, 1998-08-18
Next: RIO HOTEL & CASINO INC, SC 13D/A, 1998-08-18



   
     As filed with the Securities and Exchange Commission on August 18, 1998
                                                      Registration No. 333-56141
    
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                      ------------------------------------

   
                                 AMENDMENT NO. 1
                                       TO
                                    FORM S-4
    

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                      ------------------------------------

                             SBC COMMUNICATIONS INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


<TABLE>
<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. [_] _______________________

                      ------------------------------------
       
                      ------------------------------------
   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  A PROXY  CONTAINING  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 a proposal 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").
    

     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  THE  BYLAW  AMENDMENT,  HAS  DETERMINED  THAT  THE  BYLAW
AMENDMENT IS ADVISABLE AND RECOMMENDS THAT  SHAREOWNERS VOTE FOR ADOPTION OF THE
BYLAW AMENDMENT.
    

     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 in person or  represented by
proxy 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.

     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 SPECIAL  MEETING.
SHAREOWNERS OF RECORD MAY ALSO PROVIDE THEIR PROXIES WITH VOTING INSTRUCTIONS BY
TELEPHONE


<PAGE>


IN ACCORDANCE WITH THE INSTRUCTIONS ON THE ACCOMPANYING  PROXY CARD.  FAILURE TO
VOTE ON THE BYLAW  AMENDMENT OR  ABSTENTIONS  WITH RESPECT TO SUCH PROPOSAL WILL
HAVE  THE SAME  EFFECT  AS A VOTE  AGAINST  THE  BYLAW  AMENDMENT.  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 close of  business  on [o],  1998 has been fixed 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 that is attached to
the  form  of  proxy  sent  to  you  with  this   notice  and  the  Joint  Proxy
Statement/Prospectus.  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 submit your proxy with voting
instructions as soon as possible.  Record holders of Ameritech  Common Stock may
submit   their   proxies   with  voting   instructions   by  dialing  toll  free
1-800-690-6903  or through the Internet.  Instructions  for using these services
are set forth on the enclosed proxy card and accompanying  information  card. Of
course,  you also may submit a proxy  containing  your  voting  instructions  by
completing,  signing,  dating and returning the  accompanying  proxy card 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  or by  submitting  a
later-dated proxy with voting  instructions by telephone or through the Internet
at any time before the original proxy 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 A PROXY WITH YOUR VOTING INSTRUCTIONS BY TELEPHONE,
   THROUGH THE INTERNET OR BY RETURNING YOUR SIGNED AND DATED 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 increase  the  maximum  number of persons who may serve as
     directors  on the  Board  of  Directors  of SBC  from  twenty-one  (21)  to
     twenty-five  (25) and allow a majority of the Board of  Directors of SBC to
     thereafter  decrease (but not  thereafter  increase) the maximum  number of
     persons that may serve as directors to not less than  twenty-one  (21) (the
     "Bylaw Amendment").

          3. 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
in person or represented by proxy 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.
    

     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.

     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.

<PAGE>

   
     Whether  or not you plan to attend the  Special  Meeting,  please  promptly
complete,  sign,  date and return the  accompanying  proxy card in the  enclosed
self-addressed,  stamped  envelope.  Shareowners of record may also submit their
proxies  with  voting   instructions   by  telephone  in  accordance   with  the
instructions in the  accompanying  proxy card. 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 THE
BYLAW  AMENDMENT,  HAS  DETERMINED  THAT THE BYLAW  AMENDMENT IS  ADVISABLE  AND
RECOMMENDS THAT SHAREOWNERS VOTE FOR ADOPTION OF THE BYLAW AMENDMENT.
    

                                             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").  In accordance with Section
262 of the Delaware  General  Corporation Law (the "DGCL"),  no appraisal rights
will be available to the holders of Ameritech  Common Stock in  connection  with
the  matters  to be voted  upon at the  Ameritech  Special  Meeting.  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 a proposal to amend the Bylaws
of SBC (the "SBC  Bylaws")  to increase the  maximum  number of persons who  may
serve as directors on the SBC Board From twenty-one (21) to twenty-five (25) and
allow a majority of the SBC Board to  thereafter  decrease  (but not  thereafter
increase) the maximum  number of persons that may serve as directors to not less
than  twenty-one  (21) (the "Bylaw  Amendment"). See "The Bylaw  Amendment."  In
accordance  with Section 262 of the DGCL, no appraisal  rights will be available
to holders of SBC Common Stock in  connection  with the matters to be voted upon
at the SBC Special Meeting.

         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.  Based on the closing price per share of SBC Common
Stock on the New York Stock  Exchange (the "NYSE") on [o] of $[o], [o] shares of
Ameritech  Common Stock issued and  outstanding as of such date and the Exchange
Ratio,  the implied value of the aggregate  consideration  to be received in the
Merger by  shareowners  of  Ameritech  was $[o ] as of such  date.  Because  the
Exchange  Ratio is a fixed  number,  such  implied  value will  fluctuate to the
extent that there are  fluctuations in the share price of SBC Common Stock.  See
"The  Merger -- Terms of the  Merger."  The Merger is  intended  to qualify  for
federal  income tax purposes as a tax-free  "reorganization"  under the Internal
Revenue Code of 1986, as amended (the "Code").  See "Material Federal Income Tax
Consequences  of the Merger." As a result of the Merger,  immediately  following
the Effective Time holders of Ameritech Common Stock will own approximately [o]%
of the issued and outstanding shares 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). See "Summary -- 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  entered  into a merger  agreement  to acquire
Southern New England  Telecommunications  Corporation, a Connecticut corporation
("SNET"),  which  acquisition  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."
    

<PAGE>

         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 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) Amendment  No.1 to the
1997 SBC 10-K on Form 10-K/A,  filed June 23, 1998;  (c)  Amendment  No.2 to the
1997 SBC 10-K on Form 10-K/A,  filed June 26, 1998; (d) SBC'S Quarterly  Reports
on Form 10-Q for the  quarterly  periods ended March 31, 1998 and June 30, 1998;
(e) SBC's  Current  Reports on Form 8-K,  filed on January 5, 1998,  February 5,
1998 and May 11, 1998; (f) SBC's proxy  statement for its 1998 annual meeting of
shareowners;  (g)  the  description  of SBC  Common  Stock  contained  in  SBC's
Registration  Statement  on Form 10,  dated  November  15,  1983;  and (h) 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)
Amendment No.1 to the 1997  Ameritech 10-K on Form 10-K/A,  filed June 29, 1998;
(c) Amendment No. 2 to the 1997  Ameritech  10-K on Form 10-K/A,  filed June 29,
1998; (d) Ameritech's Quarterly Reports

                                      iii
<PAGE>

on Form 10-Q for the  quarterly  periods ended March 31, 1998 and June 30, 1998;
(e) Ameritech's  Current Reports on Form 8-K, filed January 13, 1998,  April 14,
1998, May 11, 1998 and July 17, 1998; (f)  Ameritech's  proxy  statement for its
1998 annual meeting of  shareowners;  (g) the  description  of Ameritech  Common
Stock contained in Ameritech's Registration Statement on Form 10, dated November
16, 1983; and (h) 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 (the "1997 SNET 10-K");  (b) Amendment No.1
to the 1997 SNET Form 10-K on Form 10-K/A,  filed April 29, 1998;  (c) Amendment
No.2 to the 1997 SNET 10-K on Form  10-K/A,  filed  June 19,  1998;  (d)  SNET'S
Quarterly  Reports on Form 10-Q for the  quarterly  periods ended March 31, 1998
and June 30, 1998;  (e) SNET's  Current  Reports on Form 8-K,  filed  January 5,
1998,  January 27, 1998, March 31, 1998 and April 27, 1998; and (f) 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
   The Special Meetings....................................................................................  2
      Voting and Revocation of Proxies.....................................................................  2
      The Merger...........................................................................................  2
      Interests of Certain Persons in the Merger........................................................... 11
      Dissenters' Rights of Appraisal...................................................................... 11
      Accounting Treatment................................................................................. 11
      Material Federal Income Tax Consequences of the Merger............................................... 11
      The Bylaw Amendment.................................................................................. 11
   Certain Effects of the Merger on the Rights of Holders of Ameritech Common Stock........................ 12
COMPARATIVE STOCK PRICES................................................................................... 13
SELECTED HISTORICAL AND UNAUDITED PRO FORMA COMBINED FINANCIAL DATA........................................ 14
INVESTMENT CONSIDERATIONS...................................................................................17
THE SPECIAL MEETINGS....................................................................................... 18
   General................................................................................................. 18
      SBC.................................................................................................. 18
      Ameritech............................................................................................ 18
   Date, Place and Time.................................................................................... 18
   Record Dates............................................................................................ 18
      SBC.................................................................................................. 18
      Ameritech............................................................................................ 19
   Vote Required........................................................................................... 19
      SBC.................................................................................................. 19
      Ameritech............................................................................................ 19
   Voting and Revocation of Proxies........................................................................ 20
   Solicitation of Proxies................................................................................. 21
THE COMPANIES.............................................................................................. 22
   SBC..................................................................................................... 22
   Ameritech............................................................................................... 22
   Merger Sub.............................................................................................. 22
THE MERGER................................................................................................. 23
   General................................................................................................. 23
   Background of the Merger................................................................................ 23
   Reasons for the Merger; Recommendations of the Boards of Directors...................................... 25
      SBC.................................................................................................. 25
      Ameritech............................................................................................ 27
   Opinions of Financial Advisors.......................................................................... 29
      SBC.................................................................................................. 29
      Ameritech............................................................................................ 36
   Cautionary Statement Concerning Forward-Looking Statements.............................................. 40
   Terms of the Merger..................................................................................... 41
   Closing; Effective Time................................................................................. 41
   Exchange of Ameritech Common Stock for Shares Of SBC Common Stock....................................... 41
      Lost, Stolen or Destroyed Certificates............................................................... 42
      Distributions with Respect to Unexchanged Shares; Voting............................................. 42
   Representations and Warranties.......................................................................... 43
   Certain Covenants....................................................................................... 44
      Interim Operations................................................................................... 44
      Acquisition Proposals................................................................................ 46
      The Special Meetings................................................................................. 47
      Pooling of Interests................................................................................. 47
   Certain Regulatory Filings and Approvals................................................................ 47
      HSR.................................................................................................. 48
      FCC.................................................................................................. 48
      State PUCs........................................................................................... 49

<PAGE>

      PUC Approvals Regarding Intrastate Interexchange Service............................................. 50
      Municipal Cable Franchises........................................................................... 50
      European Regulatory Approvals........................................................................ 50
   Stock Exchange Listing and De-listing................................................................... 50
   Employee Benefits....................................................................................... 50
      Stock Options........................................................................................ 50
      Benefit Plans........................................................................................ 51
   Expenses................................................................................................ 51
   Dividends............................................................................................... 51
   SBC Board Following the Merger.......................................................................... 52
   Conditions.............................................................................................. 52
   Termination............................................................................................. 53
   Certain Termination Fees   ............................................................................. 54
   Resale of SBC Common Stock.............................................................................. 55
   Dissenters' Rights of Appraisal......................................................................... 56
   Interests of Certain Persons in the Merger.............................................................. 56
      Indemnification; Directors' and Officers' Insurance.................................................. 56
      Board of Directors Following the Merger.............................................................. 57
      Directors' Plan...................................................................................... 57
      Stock Options........................................................................................ 57
      Change in Control Agreements and Severance Plan...................................................... 58
      Other Compensation and Benefit Plans................................................................. 59
      Performance and Retention Bonus...................................................................... 59
      Services and Non-Compete Agreements.................................................................. 59
ACCOUNTING TREATMENT....................................................................................... 60
MATERIAL FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER..................................................... 60
   General................................................................................................. 60
   Fractional Shares....................................................................................... 61
THE BYLAW AMENDMENT........................................................................................ 61
UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS................................................ 63
NOTES TO UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS....................................... 70
DESCRIPTION OF SBC CAPITAL STOCK........................................................................... 72
   SBC Common Stock........................................................................................ 72
   SBC Preferred Stock..................................................................................... 72
   Description of SBC Rights............................................................................... 73
COMPARISON OF CERTAIN RIGHTS OF SHAREOWNERS OF SBC AND AMERITECH........................................... 74
   General................................................................................................. 74
   Size and Classification of the Board of Directors....................................................... 75
      SBC.................................................................................................. 75
      Ameritech............................................................................................ 75
   Removal of Directors.................................................................................... 75
      SBC.................................................................................................. 75
      Ameritech............................................................................................ 75
   Action by Written Consent............................................................................... 75
      SBC.................................................................................................. 75
      Ameritech............................................................................................ 76
   Meetings of Shareowners; Quorum and Voting.............................................................. 76
      SBC.................................................................................................. 76
      Ameritech............................................................................................ 76
   Shareowner Proposals and Shareowner Nominations of Directors............................................ 76
      SBC.................................................................................................. 76
      Ameritech............................................................................................ 77
   Amendment of Corporate Charter and Bylaws............................................................... 77
      SBC.................................................................................................. 77
      Ameritech............................................................................................ 77
   Fair Price Provisions................................................................................... 77
      SBC.................................................................................................. 77
      Ameritech............................................................................................ 78

                                       vi

<PAGE>



   Rights Plans............................................................................................ 78
      SBC.................................................................................................. 78
      Ameritech............................................................................................ 78
   Indemnification of Officers and Directors............................................................... 79
      SBC.................................................................................................. 79
      Ameritech............................................................................................ 79
EXPERTS.................................................................................................... 79
VALIDITY OF SHARES......................................................................................... 80
INDEX OF DEFINED TERMS..................................................................................... 81
ANNEX A  Agreement and Plan of Merger......................................................................A-1
ANNEX B  Form of Opinion of Salomon Smith Barney...........................................................B-1
ANNEX C  Form of Opinion of Goldman, Sachs & Co............................................................C-1
    
</TABLE>

                                      vii
<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, Merger Sub and SNET 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>

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  and the Bylaw
Amendment 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 in person or represented  by proxy 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.
    

     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."

   
Voting and Revocation of Proxies

         Holders of SBC Common Stock or Ameritech  Common Stock may submit their
respective proxies with voting  instructions by telephone in accordance with the
instructions contained in their proxy cards or by signing,  dating and returning
their proxy  cards.  in addition,  holders of Ameritech  Common Stock may submit
their  proxies  with  voting  instructions  by  Internet  through  the web  site
designated on the reverse side of Ameritech's proxy card and on the accompanying
information  card. Any proxy given pursuant to this  solicitation may be revoked
by the person  giving it at any time before the proxy is voted by following  the
procedures  hereinafter  described.  See  "The  Special  Meetings -- Voting  and
Revocation of Proxies."
    

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 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

                                        2

<PAGE>


Common Stock equal to the Exchange Ratio (the "Merger Consideration").  Based on
the  closing  price per share of SBC  Common  Stock on the NYSE on [o],  1998 of
$[o],  giving  effect to the  Exchange  Ratio,  the  implied  per share value of
Ameritech  Common Sock was $[o] as of such date.  The closing price per share of
Ameritech  Common  Stock on the NYSE on [o],  1998 was $[o].  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 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."

                                        3
<PAGE>

         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 was 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  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 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

                                        4
<PAGE>

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 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.

                                        5
<PAGE>

         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.  On July 20, 1998,  SBC and
Ameritech each filed 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 ON AUGUST 19, 1998,  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
challenge  to the  Merger on  antitrust  grounds  will not be made or, if such a
challenge is made,  that it would not be successful.  See "The Merger -- Certain
Regulatory Filings and Approvals -- HSR."
    

         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.  On July 24, 1998,  SBC and  Ameritech
filed transfer of control  applications  with the FCC seeking 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,  Indiana,  Michigan,  Ohio and
Wisconsin, 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 and SBC and Ameritech filed applications for such approval on July
24,  1998.  The states of Indiana,  Michigan  and  Wisconsin do not have express
statutory  requirements  for prior  approval  of the Merger by their  respective
state  PUCs.  However,  there can be no  assurance  that these  states  will not
attempt  to assert  jurisdiction  over the  Merger.  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."

                                        6
<PAGE>


         European Regulatory Approvals
   
         SBC and  Ameritech  have made the  requisite  filings  with  regulatory
authorities in various  European  countries in which SBC or Ameritech has direct
or  indirect  investments  in   telecommunications   companies.   No  additional
approvals,   notifications   or  filings  are  required  from  such   regulatory
authorities  with  respect to  consummation  of the  Merger.  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), 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

                                        7
<PAGE>

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.
    

     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 (each of
which approvals may not be waived under the DGCL), 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 Agree ment 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

                                        8
<PAGE>


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."
    

     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

                                        9
<PAGE>


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
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

                                       10
<PAGE>

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.  Eight executive officers have entered into
change in control  agreements and seven others are  participants  in a severance
plan. The severance plan and each of the agreements provide for certain payments
and benefits in the event of a change in control of Ameritech.  In addition, SBC
has entered  into  services  and  non-compete  agreements  with eight  executive
officers of Ameritech,  which  agreements  take effect upon  consummation of the
Merger. 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.
    

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."

   
MATERIAL 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 "Material 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 increase  the maximum  number of persons who may serve as directors on
the SBC Board from twenty-one  (21) to twenty-five  (25) and allow a majority of
the SBC Board to thereafter  decrease (but not thereafter  increase) the maximum
number of persons that may serve as directors to not less than twenty-one  (21).
See "The Bylaw Amendment."
    

       

                                       11
<PAGE>

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."


                                       12

<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 ............................       44 15/16   37 1/8           50 1/4     41 1/2
   Third Quarter through August 14,                  43 1/16    38               52 1/8     43 3/8
   1998)......................................

<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  implied per share
value of Ameritech Common Stock on any date equals the closing sale price of SBC
Common Stock 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.

                                       13

<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 six-month period ended June 30, 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  synergies  which may result from
the  integration of the operations of SBC,  Ameritech and SNET.  These potential
synergies,   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,
                                         six months       --------------------------------------------------------------
                                           ended
                                       June 30, 1998       1997         1996          1995          1994         1993
                                       --------------      ----         ----          ----          ----         ----
                                                                  (in millions, except per share amounts)
<S>                                    <C>             <C>          <C>           <C>          <C>          <C>

SBC - HISTORICAL
Operating revenues                     $13,015         $24,856      $23,445       $21,712      $21,006      $20,084
Income from continuing operations        1,878           1,474        3,189         2,958        2,777        1,589
Income from continuing operations
    per common share-basic                1.02            0.81         1.73          1.61         1.52         0.88
Income from continuing operations
   per common share-assuming
   dilution                               1.01            0.80         1.72          1.60         1.52         0.88
Total assets                            42,600          42,132       39,485        37,112       46,113       47,695
Long-term debt                          11,547          12,019       10,930        10,409       10,746       10,588
Dividends per common share              0.4675           0.895         0.86         0.825         0.79        0.755
Book value per common share               5.91            5.38         5.28          4.57         7.29         8.34
Network access lines                     34.21           33.44        31.84         30.32        29.15        28.23
AMERITECH - HISTORICAL
Operating revenues                      $8,422         $15,998      $14,917       $13,428      $12,569      $11,865
Income from continuing operations        2,200           2,296        2,134         2,008        1,170        1,513
Income from continuing operations
   per common share-basic                 2.00            2.09         1.93          1.81         1.06         1.39
Income from continuing operations
   per common share-assuming
   dilution                               1.98            2.08         1.92          1.81         1.06         1.39
Total assets                            29,045          25,339       23,707        21,942       19,947       23,428
Long-term debt                           7,013           4,610        4,437         4,513        4,448        4,090
Dividends per common share                0.60           1.148        1.078         1.015         0.97         0.93
</TABLE>


                                       14
<PAGE>

<TABLE>

<CAPTION>
                                      As of or for the               As of or for the years ended December 31,
                                         six months       --------------------------------------------------------------
                                           ended
                                       June 30, 1998       1997         1996          1995          1994         1993
                                       --------------      ----         ----          ----          ----         ----
                                                                  (in millions, except per share amounts)
<S>                                    <C>            <C>          <C>           <C>           <C>          <C>
Book value per common share               9.14           7.57         6.99          6.33          5.49         7.18
Network access lines                     20.84          20.50        19.69         19.06         18.24        17.56
PRO FORMA SBC AND AMERITECH
COMBINED
Operating revenues                     $21,437        $40,854      $38,362       $35,140       $33,575      $31,949
Income from continuing operations        4,078          3,770        5,323         4,966         3,947        3,102
Income from continuing operations
   per common share-basic                 1.24           1.15         1.62          1.51          1.21         0.96
Income from continuing operations
   per common share-assuming
   dilution                               1.23           1.14         1.61          1.50          1.21         0.96
Total assets                            71,645         67,471       63,192        59,054        66,060       71,123
Long-term debt                          18,560         16,629       15,367        14,922        15,194       14,678
Dividends per common share(1)           0.4675          0.895         0.86         0.825          0.79        0.755
Book value per common share               6.37           5.54         5.29          4.68          5.92         7.07
Network access lines                     55.05          53.94        51.53         49.37         47.39        45.79
SNET-HISTORICAL
Operating revenues                     $ 1,066         $2,022       $1,942        $1,816        $1,718       $1,655
Income (loss) from continuing
operations                                 109            198          193           169           178          (44)
Income (loss) from continuing
   operations per common share-
   basic                                  1.62           2.99         2.95          2.60          2.77        (0.68)
Income (loss) from continuing
   operations per common share-
   assuming dilution                      1.60           2.98         2.94          2.60          2.77        (0.68)
Total assets                             2,837          2,771        2,671         2,724         3,505        3,762
Long-term debt                           1,147          1,157        1,170         1,182           952          984
</TABLE>


                                       15
<PAGE>

<TABLE>

<CAPTION>
                                      As of or for the               As of or for the years ended December 31,
                                         six months       --------------------------------------------------------------
                                           ended
                                       June 30, 1998       1997         1996          1995          1994         1993
                                       --------------      ----         ----          ----          ----         ----
                                                                  (in millions, except per share amounts)
<S>                                    <C>            <C>        <C>           <C>           <C>           <C>

Dividends per common share                0.88          1.76         1.76          1.76          1.76         1.76
Book value per common share              10.84          8.96         7.05          5.42         14.77        13.38
Network access lines                      2.34          2.29         2.16          2.07          2.01         1.96
PRO FORMA SBC,
  AMERITECH AND
  SNET COMBINED
Operating revenues                     $22,503       $42,876      $40,304       $36,956       $35,293      $33,604
Income from continuing operations        4,187         3,964        5,516         5,135         4,125        3,058
Income from continuing operations
   per common share-basic                 1.23          1.17         1.62          1.50          1.22         0.91
Income from continuing operations
   per common share-assuming
   dilution                               1.22          1.16         1.61          1.50          1.22         0.91
Total assets                            74,482        70,242       65,863        61,778        69,565       74,885
Long-term debt                          19,707        17,786       16,537        16,104        16,146       15,662
Dividends per common share (1)          0.4675         0.895         0.86         0.825          0.79        0.755
Book value per common share               6.36          5.53         5.25          4.63          6.00         7.09
Network access lines                     57.38         56.23        53.69         51.45         49.40        47.76
AMERITECH EQUIVALENTS -
  SBC AND AMERITECH
  COMBINED
Income from continuing operations
   per common share-basic(2)              1.63          1.51         2.13          1.99          1.59         1.26
Income from continuing operations
   per common share-assuming
   dilution(2)                            1.62          1.50         2.12          1.97          1.59         1.26
Dividends per common share(2)             0.62          1.18         1.13          1.09          1.04         0.99
Book value per common share(2)            8.38          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)              1.62          1.54         2.13          1.97          1.61         1.20
Income from continuing operations
   per common share-assuming
   dilution(2)                            1.61          1.53         2.12          1.97          1.61         1.20
Dividends per common share(2)             0.62          1.18         1.13          1.09          1.04         0.99
Book value per common share(2)            8.37          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>


                                       16
<PAGE>


                            INVESTMENT CONSIDERATIONS

FIXED EXCHANGE RATIO. Under the terms of the Merger Agreement,  at the Effective
Time, each share of Ameritech  Common Stock issued and  outstanding  immediately
prior to such time (other than Excluded  Ameritech Stock) will be converted into
1.316  shares of SBC Common  Stock.  The Merger  Agreement  does not contain any
provisions  for adjustment of the Exchange  Ratio based on  fluctuations  in the
market prices of Ameritech Common Stock or SBC Common Stock prior to the Merger.
The  market  prices  of  Ameritech  Common  Stock  and SBC  Common  Stock at the
Effective  Time may be different than their  respective  market prices as of the
date of execution of the Merger  Agreement,  the date hereof or the dates of the
Special Meetings. For example,  during the first and second calendar quarters of
1998, the closing price of Ameritech Common Stock ranged from a low of $38 27/32
to a high of $50 1/4,  and the closing  price of SBC Common  Stock ranged from a
low of $35 3/8 to a high of $46  9/16,  all as  reported  on the NYSE  Composite
Transactions  Tape. See "Summary -- Comparative  Stock Prices." Such  variations
could be the result of changes  in the  business,  operations  or  prospects  of
Ameritech,  SBC, or the combined company,  market  assessments of the likelihood
that  the  Merger  will  be  consummated  and  the  timing  thereof,  regulatory
considerations,  general  market and economic  conditions and other factors both
within and beyond the  control of SBC or  Ameritech.  At the time of the Special
Meetings,  Ameritech and SBC shareowners will not know the price at which shares
of SBC Common  Stock that will be issued  upon  consummation  of the Merger will
trade at the time of such issuance.

FAILURE TO REALIZE BENEFITS  ANTICIPATED BY THE PARTIES. The Merger involves the
integration of two companies that have previously  operated  independently.  SBC
and Ameritech  entered into the Merger  Agreement with the expectation  that the
Merger would create opportunities to implement a "national-local"  strategy, and
to achieve cost synergies,  revenue growth,  technological development and other
synergistic  benefits.  The value of SBC Common Stock following  consummation of
the Merger may be affected by the  ability to achieve the  benefits  expected to
result from  consummation  of the Merger.  Achieving  the benefits of the Merger
will depend in part upon  meeting  the  challenges  inherent  in the  successful
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.  There can be no assurance that such challenges will be
met and that such  diversion  will not  negatively  impact the operations of SBC
following the Merger.  Delays encountered in the transition process could have a
material adverse effect upon the revenues, level of expenses,  operating results
and  financial  condition of the combined  company.  Although SBC and  Ameritech
expect significant benefits to result from the Merger, there can be no assurance
that the combined company will realize any of these  anticipated  benefits.  See
"The  Merger  --  Reasons  for the  Merger;  Recommendations  of the  Boards  of
Directors."

RISK OF CONDITIONS IMPOSED BY REGULATORY AGENCIES. Consummation of the Merger is
conditioned upon the expiration or termination of the applicable  waiting period
under the HSR Act and the making of certain filings with and notices to, and the
receipt of consent orders and approvals  from,  the FCC,  various PUCs and other
local,  state,  federal  and  foreign  governmental   entities.  The  terms  and
conditions of such consents,  orders or approvals may require the divestiture of
certain divisions,  operations or assets of the combined companies. There can be
no assurance that such required  divestitures or other conditions,  if any, will
not have a material  adverse  effect on the  business,  financial  condition  or
results of operations of the combined  company or cause the  abandonment  of the
Merger by SBC and Ameritech.  See "The Merger -- Certain  Regulatory Filings and
Approvals" and "-- Conditions."
    

                                       17
<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 and adoption of the Bylaw  Amendment,  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  THE  BYLAW  AMENDMENT  AND
DETERMINED  THAT THE  BYLAW  AMENDMENT  IS  ADVISABLE  AND  RECOMMENDS  THAT SBC
SHAREOWNERS VOTE FOR ADOPTION OF THE BYLAW AMENDMENT.
    

     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 such  Merger  Proposal as may  properly  come  before the  Ameritech  Special
Meeting.

         THE AMERITECH  BOARD HAS 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 1-800-690-6903, or through the Internet, in accordance with
the  instructions  set  forth  on the  Ameritech  proxy  card  and  accompanying
information  card.  Record  owners of SBC Common Stock as of the SBC Record Date
may  provide  proxies  by  calling   1-800-________,   in  accordance  with  the
instructions set forth on the 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.

                                       18
<PAGE>

     Ameritech

   
         The close of  business  on [o],  1998 has been  fixed 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.
    

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 presence in person or  represented by proxy of forty percent of the
shares of SBC Common  Stock  entitled  to vote at the SBC Special  Meeting  will
constitute  a quorum  for the  transaction  of  business  other  than the  share
issuance 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 the Bylaw  Amendment,  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  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. No director or executive  officer of SBC has indicated
an intention to vote his or her shares of SBC Common Stock  against 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 issued
and  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.


                                       19
<PAGE>


         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.  Abstentions  and broker  non-notes  will be
counted as present for purposes of determining a quorum.

         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.  No director  or  executive
officer of  Ameritech  has  indicated  an intention to vote his or her shares of
Ameritech Common Stock against 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.

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

VOTING AND REVOCATION OF PROXIES

   
         Proxies for shares of SBC Common Stock and  Ameritech  Common Stock may
be  submitted by  completing  and mailing the proxy card that  accompanies  this
Joint  Proxy  Statement/Prospectus,  or by  submitting  your proxy  with  voting
instructions by telephone.  Submission of proxies with voting  instructions  may
not be  available  to  shareholders  who hold  their  shares  through  a broker,
nominee,  fiduciary  or  other  custodian.  In  addition,  proxies  with  voting
instructions for shares of Ameritech  Common Stock may be submitted  through the
Internet. Shares of SBC Common Stock and Ameritech Common Stock represented by a
proxy properly  signed or submitted as described  below and received at or prior
to the appropriate Special Meeting,  unless subsequently  revoked, will be voted
in accordance with the instructions thereon.

         To submit a  written  proxy by mail,  holders  of SBC  Common  Stock or
Ameritech  Common  Stock  should  complete,  sign,  date and mail the proxy card
provided  with this Joint  Proxy  Statement/Prospectus  in  accordance  with the
instructions  set forth on such card.  If a proxy  card 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 and FOR the Bylaw
Amendment and shares of Ameritech Common Stock  represented by the proxy will be
voted FOR the Merger Proposal.

         Instead  of   submitting  a  signed  proxy  card,   SBC  and  Ameritech
shareowners may also submit their proxies with voting instructions by telephone,
and holders of Ameritech  Common Stock may also submit their proxies with voting
instructions  through the Internet.  To submit proxies with voting  instructions
via telephone or the Internet,  shareowners  should follow the instructions that
accompany or are set forth on the reverse side of their proxy card. Each SBC and
Ameritech  shareowner  has been assigned a unique  control number which has been
printed on each holder's proxy card.  Shareowners who submit proxies with voting
instructions  by telephone  or through the Internet  will be required to provide
their assigned  control number before their proxy will be accepted.  In addition
to the  instructions  that appear on or accompany  the proxy card,  step-by-step
instructions  will  be  provided  by  recorded  telephone  message,  or  at  the
designated  web site for  Ameritech  shareowners  submitting  their proxies with
voting  instructions  through the Internet,  and  shareowners  submitting  their
proxies with voting  instructions  by  telephone  or the  Internet  will receive
confirmation that their proxies have been successfully submitted.

         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 by filing a duly  executed  revocation  or a duly
executed  proxy  bearing  a later  date with the  Secretary  of  Ameritech,  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.  To  revoke a proxy  previously  submitted  by
telephone or, for Ameritech shareowners, by Internet, a shareowner of record can
simply vote again at a later date, using the same procedures,  in which case the
later  submitted  vote will be  recorded  and the earlier  vote will  thereby be
revoked.


                                       20
<PAGE>

         If an SBC  shareowner is a participant  in SBC's Direct Stock  Purchase
and  Reinvestment  Plan,  the SBC proxy  card or  telephone  proxy 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  Nonsalaried
Employees,  or the  Pacific  Telesis  Group  PAYSOP,  then the SBC proxy card or
telephone proxy 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 or votes by  telephone  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 either sign and return every proxy
card received or provide his or her proxy with voting  instructions by telephone
in the  manner  described  in each  proxy  card and using the  assigned  control
number.

         If an Ameritech  shareowner  is a participant  in the Ameritech  Direct
Services Investment Plan, the Ameritech proxy card,  telephone proxy or Internet
proxy  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,  telephone  proxy or
Internet proxy 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 either sign and return every proxy card received or
provide his or her proxy with voting  instructions  by  telephone or through the
Internet  in the manner  described  in each  proxy  card and using the  assigned
control number.

         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 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 not related to the proposals  described herein 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 D.F. King
&  Co.  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 D.F. King & Co.
for such services will be equal to

                                       21
<PAGE>


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 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.

       

                                       22
<PAGE>

                                   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  sets forth the  material  provisions  of the Merger
Agreement,  but 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 become  exchangeable
for the Merger Consideration. Based on the closing price per share of SBC Common
Stock on the NYSE on [o], 1998 of $[o], giving effect to the Exchange Ratio, the
implied per share value of Ameritech  Common Stock was [o] as of such date.  The
closing  price per share of Ameritech  Common Stock on the NYSE on [o], 1998 was
$[o].  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  (based on the number of shares of SBC Common Stock and
Ameritech  Common Stock  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).
    

         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 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
acquisitions,  combinations,  joint ventures or other alliances 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
alternatives, none were pursued beyond exploratory discussions due to strategic,
financial and/or regulatory considerations.


         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

                                       23
<PAGE>


Ameritech,  including possible structures for such a combination. At a March 18,
1998 meeting of the  Ameritech  Board,  Mr.  Notebaert  reported  briefly on his
preliminary  discussion with Mr.  Whitacre.  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 an exchange of SBC Common
Stock for  Ameritech  Common  Stock  that would  provide a premium to  Ameritech
shareowners.  During the course of that meeting,  Mr. Whitacre and Mr. Notebaert
generally  discussed  how such a premium might be  calculated,  but deferred any
detailed discussions until their respective  management teams could be assembled
to further explore the feasibility of a potential 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 Business Development of Ameritech, represent Ameritech
in evaluating the feasibility of a possible 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  preliminary  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 that meeting,
Mr.  Notebaert  reported on his meeting the previous  day with Mr.  Whitacre and
updated the Ameritech  Board  concerning  the  discussions  that had taken place
regarding  various  issues,  including a potential  range of market premiums for
Ameritech's shareowners being considered and the proposed transaction structure,
as  well as  post-combination  corporate  governance,  management  and  employee
retention  issues.  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.  On April 24, 1998 the SBC Board met and
discussed a possible  combination  with  Ameritech.  At the  conclusion  of this
meeting,  SBC  management  represented to the SBC Board that they would continue
discussing such a combination with Ameritech.

         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,  and  focused  primarily  on (i) a  mutually
agreeable  exchange  ratio  (ii) the  restrictions  on each  party's  ability to
contact and engage in  discussions  with other  potential  acquirors,  (iii) the
actions  that  the  companies  would  be  prohibited  from  taking  prior to the
Effective  Time,  without the consent of the other company,  (iv) the provisions
for termination of the Merger  Agreement,  (v) the  circumstances  under which a
Termination  Fee would be payable and the amount of such fee and (vi) regulatory
considerations relating to the proposed Merger.

         On May 6, 1998, the Ameritech  Board met to discuss  various aspects of
the proposed merger.  Members of Ameritech's  senior management  discussed their
views  and   analyses   of  various   aspects  of  the   proposed   transaction.
Representatives of Goldman Sachs presented an analysis of the financial terms of
the proposed  transaction,  and representatives  from Ameritech's legal advisors
outlined  the terms of the Merger  Agreement  and the  Ameritech  Board's  legal
duties  and  responsibilities.   In  connection  with  those  presentations  and
analyses,  the Ameritech Board reviewed and considered,  among other things, the
following  matters:  a tentative fixed exchange ratio; the synergistic  benefits
expected to be derived  from the Merger and the  business  reasons in support of
those  benefits;  industry  trends and  marketplace  expectations  involving the
integrated,  global delivery of  telecommunications  products and services;  the
regulatory  review  process and its  anticipated  requirements  and timing;  the
principal terms of the draft Merger  Agreement;  and the other matters described
under "-- Reasons for the Merger;  Recommendations of the Boards of Directors --
Ameritech" and "-- Opinions of Financial  Advisors  --Ameritech."  The Ameritech
Board authorized

                                       24
<PAGE>


representatives  of Ameritech to
continue  negotiating with SBC and determined that it would convene again on May
10, 1998 to consider further the possible transaction with SBC.

         On May 7, 1998,  the SBC Board met to discuss the terms of the proposed
merger.  Members of SBC's senior management and representatives of SBC discussed
with the SBC Board their  views and  analyses of the  proposed  transaction  and
representatives  of Salomon  Smith Barney made a  presentation  on the financial
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" which included the terms of the Merger  Agreement,  the matters
discussed with Salomon Smith Barney and the prospects for the combined  company.
The SBC  Board  also  discussed  the  various  matters  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 meetings of
the Ameritech  Board and the SBC Board 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 discuss the final terms of the Merger Agreement,  including,
among other  things,  the Exchange  Ratio and its relation to the current  stock
prices for each company. 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.  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 shaares 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

                                       25
<PAGE>


     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  to  function  in such
     capacity.  Based on SBC's  experience in building  voice and data switching
     architecture,  SBC anticipates  that in order to expand its services to the
     30  markets  outside  its  traditional  local  telephone  region,   capital
     expenditures  may 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 those of its international investments and 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  otherwise  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,
     including   expense  savings   resulting  from   elimination  of  redundant
     administrative  functions,  increased  scale  and  the  adoption  of  "best
     practices";   $750  million  in  potential  additional  revenue  synergies,
     including revenue enhancements  resulting from increased use of residential
     vertical features, additional residential telephone lines, increased caller
     ID  penetration,  and  increased use of the  directory  business;  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,  including  through
     procurement  savings.  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 implement
     successfully 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;

                                       26
<PAGE>


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 stand alone earnings per share in 2000 and 2001
     by approximately 7% and 3%, respectively.
    

         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

                                       27
<PAGE>


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 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


                                       28
<PAGE>


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 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.

                                       29
<PAGE>

   
         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  by
Salomon Smith Barney 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  Composite  Average for the period  from  January 2, 1997
     through May 1, 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 2, 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 historical average closing 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 closing 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.

                                       30
<PAGE>


          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.

          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(degree)  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,  such as the relative penetration levels, margins and growth
          rates  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,   including   certain  operating  and  financial  data
          reflecting  the relative  stage of  development 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,  such as the relative  amount of spectrum and of fixed
          assets 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,  including certain operating and financial data
          reflecting  Ameritech  Publishing's  relative  performance,  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, such as the


                                       31
<PAGE>


          relative  margins and growth  rates 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  asa,  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  of  subsidiaries,  cash and  cash  equivalents,
          investments  (other than those included in Ameritech Other Assets) 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.  The
          foregoing  analysis does not reflect the revenue,  expense and capital
          expenditure  synergies  believed to be achievable by SBC following the
          consummation  of the Merger,  which  synergies  have been  analyzed as
          described in clause (ix) below.

          (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 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  approximately  $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 approximately $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 approximately $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
     approximately  $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
     approximately  $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 approximately $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  equity
     positions 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 approximately $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 approximately  $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.  The foregoing  analysis does
     not reflect the revenue, expense and capital

                                       32
<PAGE>


     expenditure  synergies  believed  to be  achievable  by SBC  following  the
     consummation of the Merger, which synergies have been analyzed as described
     in clause (ix) below.
    

          (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 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  approximately  $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  

                                       33
<PAGE>


          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 approximately $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 approximately $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, S.A., Shinsegi Mobile Telecom Co.
          Ltd., Mobile Telephone  Networks,  Telefonos de Mexico,  S.A. de C.V.,
          Aurec Group, VTR S.A., diAx and Telkom,  S.A. Limited,  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 (other than those
          included  in SBC Other  Assets)  and option  proceeds,  this  analysis
          resulted  in  a  valuation  range  for  SBC's   aggregate   equity  of
          approximately  $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).  The foregoing
          analysis does not reflect the revenue, expense and capital expenditure
          synergies  believed to be achievable by SBC following the consummation
          of the Merger,  which  synergies  have been  analyzed as  described in
          clause (ix) below.

          (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  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  approximately  $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  approximately  $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 approximately $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  approximately  $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  approximately  $9.3 billion to $10.2
     billion.  For the other  business  segments  and assets of SBC,  including,
     without limitation, the domestic video business

                                       34
<PAGE>


     segment,  the  international  equity stakes,  SNET and corporate  overhead,
     Salomon  Smith  Barney  derived  a range of net  values  based  on  various
     valuation  methodologies of approximately $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  approximately  $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).  The foregoing
     analysis  does not reflect  the  revenue,  expense and capital  expenditure
     synergies  believed to be achievable by SBC following the  consummation  of
     the Merger,  which synergies have been analyzed as described in clause (ix)
     below.

          (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 approximately  $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.

         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.


                                       35
<PAGE>

   
         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, after
execution of the  Engagement  Letter;  plus (b) an additional  fee of $4 million
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 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

                                       36
<PAGE>

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 the material  financial  analyses used by
Goldman Sachs in connection  with providing its written opinion to the Ameritech
Board:

          (i) 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.

          (ii)  Comparable  Transactions  Analysis.  Goldman Sachs  reviewed and
     compared certain P/E Multiples  relative to the merger of NYNEX Corporation
     and Bell  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. The NYNEX Merger
     and the Pactel  Acquisition  were  selected by Goldman  Sachs  because both
     transactions  involved  regional  Bell  operating  companies  that  operate
     predominantly in the communications  services industry,  which for purposes
     of this  analysis,  makes them  comparable to the Merger.  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  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.  Such analysis  demonstrated  that the premium of the
     acquired company  transaction P/E Multiple (based on the Exchange Ratio) to
     the  acquiror  P/E  Multiple  was higher for the Merger  than for the NYNEX
     Merger  and  the  Pactel  Acquisition.   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


                                       37
<PAGE>


     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.

          (iii) 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 in order to
     quantify anticipated synergies from the Merger for purposes of its analysis
     set forth below. The analysis showed a range of incremental  annual pre-tax
     earnings  of  $1,827  million  to  $2,722   million.   Goldman  Sachs  used
     anticipated synergies of $2,275 million, which constitutes the mid-point of
     the range of  incremental  pre-tax  earnings  for purposes of the Pro Forma
     Merger  Analysis and the Present Value of Future  Performance  Analysis set
     forth below.

          (iv) 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.

          (v) 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 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.

                                       38
<PAGE>

          (vi) 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.

          (vii)  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.

         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 
    

                                       39
<PAGE>

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,  and  (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. In addition,  pursuant to the terms of the Goldman
Sachs Engagement Letter, Ameritech may, at its discretion,  elect to pay Goldman
Sachs  (i) an  additional  fee of $5  million,  payable  in  whole or in part at
Ameritech's  discretion,  based on Goldman Sachs'  availability and contribution
through the closing of any such transactions,  and (ii) an additional fee of $10
million, payable in whole or in part 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.

                                       40
<PAGE>

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  "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)

                                       41
<PAGE>

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 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

                                       42
<PAGE>

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.


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.

                                       43
<PAGE>

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  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

                                       44

<PAGE>

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 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


                                       45

<PAGE>


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 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 an SBC  Acquisition  Proposal or
engage in any negotiations  concerning an SBC Acquisition Proposal, or otherwise
facilitate  any  effort  or  attempt  to make or  implement  an 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 an SBC Acquisition  Proposal;
(B) engaging in any discussions or

                                       46

<PAGE>


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 an 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.

         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

                                       47

<PAGE>

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.  Other than as described  below
under "-- FCC," SBC and Ameritech  have not  determined how they will respond to
conditions,  limitations  or  divestitures  which may be sought by  Governmental
Entities  in  connection  with  any  requisite  approvals.  If  any  conditions,
limitations  or  divestitures  are  sought  by  Governmental  Entities,  SBC and
Ameritech will make such determinations at the appropriate time.

         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.
    

         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 each filed a
Notification  and Report  Form  pursuant to the HSR Act with the  Department  of
Justice and the FTC on July 20, 1998.  The HSR Act waiting period will expire on
August  19,  1998,  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
competition  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

                                       48

<PAGE>

interest,  convenience,  and necessity will be served by the transfer of control
that will be effected upon consummation of the Merger. On July 24, 1998, SBC and
Ameritech filed transfer of control  applications with the FCC seeking 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.  However,  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").  In an
effort to comply with the FCC's rules and regulations and certain  provisions of
the Merger  Agreement,  SBC and  Ameritech  expect to be  required by the FCC to
divest  one  of the  Overlapping  Cellular  Licenses  in  each  market  and  are
attempting to determine the manner in which an Overlapping  Cellular  License in
each market should be divested.
    
         State PUCs

   
         Ameritech  has  subsidiaries  that operate as public  utility or public
service  companies  in the  states  of  Illinois,  Indiana,  Michigan,  Ohio and
Wisconsin.  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;  SBC and  Ameritech  filed  applications  for such
approval  on July 24,  1998.  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 Indiana,  Michigan and Wisconsin do not
have express  statutory  requirements  for prior approval of the Merger by their
respective state PUCs. However, there can be no assurance that these states will
not attempt to assert jurisdiction over the Merger. 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 Pactel Acquisition.

         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. On July 24, 1998, SBC,  Ameritech and
the Illinois Telecommunications Carriers (collectively, the "Applicants"), filed
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 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
("Section  5/7-204").  In  approving  the  proposed  reorganization  pursuant to
Section 5/7-204,  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.  The 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  filed an application on July 24, 1998 (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,

                                       49

<PAGE>


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 have made the requisite  notifications  to or filings
with  regulatory  authorities  in  various  European  countries  in which SBC or
Ameritech has direct or indirect investments in telecommunications companies. No
additional approvals, notifications or filings are required from such regulatory
authorities with respect to the consummation of the Merger.  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 

                                       50

<PAGE>

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,  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.

       

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.

                                       51

<PAGE>


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 (each of which approvals may
not be waived  under the DGCL),  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 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 been
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

                                       52

<PAGE>

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) SBC and
Merger Sub each  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's having received the opinion of Skadden,  Arps,
Slate, Meagher & Flom (Illinois),  counsel to Ameritech, 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.
    

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

                                       53

<PAGE>

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 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 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

                                       54

<PAGE>

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  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 an 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 (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 the  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

                                       55

<PAGE>

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 Rule 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
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.
    

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.

         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 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% of 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.
    

                                       56

<PAGE>


         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.  Under the terms of the plan,  deferred  amounts are
paid in cash  following  termination  of a director's  service on the  Ameritech
Board.  Under  the terms of the plan,  as a result  of the  consummation  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,  $809,535; 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 if the  option  holder's  employment  is  involuntarily
terminated on or before the last day of the second full calendar year  following
the change in control,  such  options  remain  exercisable  for up to five years
following  the  employment  termination  date. In addition,  certain  associated
agreements  not to compete  with  Ameritech  terminate  upon a change in control
according to 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
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 The             Weighted Average             Aggregate Value of
                                     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>


                                       57

<PAGE>

         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 are distributed in the form of shares of
Ameritech  Common  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

   
         Ameritech has entered into agreements regarding changes in control (the
"Change In Control  Agreements") with the Named Executive Officers.  Three other
executive  officers  are also  party to a Change Of  Control  Agreement  and the
remaining  seven executive  officers are  participants in the Severance Plan (as
defined below).  The Change in Control Agreements 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.

         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  will not be reduced 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 annual base 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


                                       58

<PAGE>


estimated to be approximately $40,700,000 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 $5,100,000 For Mr. Allen (which amounts include  approximately  $1,800,000
payable to Mr. Allen as an additional  pension  benefit  pursuant to a July 1995
employment  agreement),  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 the Change in Control Agreement and
the  Severance  Plan 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 (the
"Compensation  Committee").  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  such  distribution  was  previously  waived by the
employee.  The Ameritech Board has concluded that the consummation of the 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.  Ameritech may also accelerate
into 1998  payment  of a portion  of the 1998  short-term  incentive  awards and
previously vested deferred compensation and non-qualified pension benefits.
    

         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. The bonus will be paid by Ameritech to retain Mr. Notebaert's
services  during  the  period  commencing  on the date of the  Merger  Agreement
through the Effective Time and to compensate  him for the increased  demands and
responsibilities placed upon him during this period.

         Services and Non-Compete Agreements

         On May 10, 1998, SBC entered into services and  non-compete  agreements
with eight  executive  officers  of  Ameritech,  including  the Named  Executive
Officers (collectively, the "Services and Non-Compete Agreements"). The Services
and Non-Compete  Agreements  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 and will  provide  services to the  combined
company  as a  member  of  senior  management  as  required  by SBC  during  the
transition and integration period. The Services and Non-Compete  Agreements also
provide that the executive  officer may cease to be a full-time  employee of SBC
or a subsidiary  of SBC 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  termination of the executive  officer's status as a
full-time   employee  under  the  Services  and  Non-Compete   Agreements  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 Services and  Non-Compete  Agreements 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 in the
aggregate for the three other  executive  officers of Ameritech who have entered
into  Services  and  Non-Compete   Agreements.   The  Services  and  Non-Compete
Agreements 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 Services and Non-Compete  Agreements  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 Services and
Non-Compete  Agreement  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 or her relationship with SBC. Upon


                                       59

<PAGE>


termination of employment,  unless the non-competition  clause is violated,  the
Services and Non-Compete  Agreements  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."

   
          MATERIAL FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER

         The  following  is a  discussion  of the  material  federal  income tax
consequences  of the Merger.  The discussion 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
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  applicable  federal  income tax laws,  such as dealers in  securities  or
foreign currencies, banks, trusts, insurance companies,  financial institutions,
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.  Each such opinion 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) the  assumption  that the
Merger will be consummated in accordance with the terms of the Merger Agreement.

         In the opinion of each of Sullivan & Cromwell and Skadden, Arps, Slate,
Meagher  & Flom  (Illinois),  assuming  that (i) the  Merger is  consummated  in
accordance with the terms of the Merger Agreement and as described in this Joint


                                       60

<PAGE>

Proxy  Statement/Prospectus,  and (ii) the Factual  Representations are true and
complete as of the Effective Time, and based upon Currently  Applicable Law, 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.  The
following  discussion  assumes  that  the  Merger  will  be  treated  as  such a
reorganization.  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 a holder of Ameritech  Common Stock who  exchanges all of his or her
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 by such holder in exchange  therefor in the
Merger  (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 of a share of SBC Common  Stock  received in the Merger will  include the
holder's  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,  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.  Long term  capital gain of an individual
holder is generally subject to a maximum tax rate of 20%. Holders should consult
their tax advisors concerning the treatment of capital gains and losses.

         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,  FOREIGN  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 as follows:

               "The  number  of  Directors  shall  be  not  more  than
               twenty-five  (25),  and the  maximum  number of persons
               that may serve as Directors may thereafter be decreased
               from time to time by a vote of a majority  of the Board
               of Directors (but not thereafter increased) to not less
               than twenty-one (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  selected by the SBC Board in  consultation  with
the Chief  Executive  Officer  and  Board of  Directors  of SNET from  among the
members of the Board of  Directors  of 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

                                       61

<PAGE>

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 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.
    

                                       62

<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 six  months  ended  June 30,  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 June 30, 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.

                                       63

<PAGE>

<TABLE>
<CAPTION>
   
                                              SBC COMMUNICATIONS INC. AND AMERITECH CORPORATION
                                             UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET




                                                                AS OF JUNE 30, 1998


                                                                                                               SBC/
                                                                        SBC/                                AMERITECH/
                                                                     AMERITECH                                SNET
                                       HISTORICAL        PRO FORMA   PRO FORMA    HISTORICAL  PRO FORMA     PRO FORMA
                                  SBC        AMERITECH  ADJUSTMENTS  COMBINED        SNET     ADJUSTMENTS   COMBINED
                                                                (in millions)
ASSETS
CURRENT ASSETS
<S>                               <C>       <C>        <C>         <C>          <C>         <C>           <C>

Cash and cash equivalents         $    615   $   280                 $   895      $    12                   $   907
Accounts receivable-net              4,847     3,008                   7,855          378                     8,233
Other current assets                 1,573     1,846                   3,419           96                     3,515
Total current assets                 7,035     5,134                  12,169          486                    12,655
PROPERTY, PLANT AND   
EQUIPMENT-NET                       27,758    14,025                  41,783        1,758                    43,541
INTANGIBLE ASSETS-NET                3,208     1,917                   5,125          385                     5,510
INVESTMENTS IN EQUITY AFFILIATES     2,484     4,364                   6,848           --                     6,848
OTHER ASSETS                         2,115     3,605                   5,720          208                     5,928
TOTAL ASSETS                      $ 42,600   $29,045                 $71,645      $ 2,837                   $74,482
LIABILITIES AND SHAREOWNERS'
EQUITY
CURRENT LIABILITIES

Debt maturing within one year     $  2,211   $ 1,281                $  3,492          180                   $ 3,672
Other current liabilities            7,813     5,031                  12,844          429                    13,273
Total current liabilities           10,024     6,312                  16,336          609                    16,945
LONG-TERM DEBT                      11,547     7,013                  18,560        1,147                    19,707
POSTEMPLOYMENT BENEFIT
OBLIGATION                           4,882     3,125                   8,007          256                     8,263
OTHER NONCURRENT LIABILITIES         4,282     2,520                   6,802           88                     6,890
CORPORATION-OBLIGATED                
MANDATORILY REDEEMABLE PREFERRED
  SECURITIES OF SUBSIDIARY 
  TRUSTS*                            1,000                             1,000                                   1,000     
SHAREOWNERS' EQUITY
                                                                                                  
Common shares                     $  1,867   $ 1,177    $  273  2a   $ 3,317      $    70      $  50  2b     $ 3,437
Capital in excess of par value       8,495     5,438    (1,927) 2a    12,006          690       (135) 2b      12,561
Retained earnings                    2,167     5,729                   7,896           92                      7,988
Guaranteed obligations of ESOPs       (155)     (114)                   (269)         (30)                      (299)
Deferred compensation - LESOP          (86)       --                     (86)          --                        (86)
Accumulated Comprehensive
Income                                (650)     (501)                 (1,151)          --                     (1,151)
Treasury shares (at cost)             (773)   (1,654)    1,654 2a       (773)         (85)        85  2b        (773)
Total shareowners' equity           10,865    10,075        --        20,940          737         --          21,677
TOTAL LIABILITIES AND            
SHAREOWNERS'                                 
   EQUITY                         $ 42,600  $ 29,045    $   --       $71,645      $ 2,837      $  --         $74,482

<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>
    

                                       64

<PAGE>

<TABLE>
<CAPTION>
                                                    SBC COMMUNICATIONS INC. AND AMERITECH CORPORATION
                                                  UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET
                                                                 AS OF DECEMBER 31, 1997

                                                                                                                            SBC/
                                                                                     SBC/                                 AMERITECH/
                                                                                   AMERITECH                                SNET
                                                HISTORICAL           PRO FORMA     PRO FORMA    HISTORICAL   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>

                                       65

<PAGE>

<TABLE>
<CAPTION>

   
                                 SBC COMMUNICATIONS INC. AND AMERITECH CORPORATION
                            UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF INCOME
                                FOR THE SIX MONTHS ENDED JUNE 30, 1998


                                                                                                              SBC/   
                                                                       SBC/                                   AMERITECH/
                                                                       AMERITECH                              SNET
                                      HISTORICAL          PRO FORMA    PRO FORMA   HISTORICAL  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             $13,015  $ 8,422                  $21,437     $1,066                     $22,503
Total operating expenses               9,647    6,353                   16,000        845                      16,845
OPERATING INCOME                       3,368    2,069                    5,437        221                       5,658
Interest expense                        (471)    (322)                    (793)       (45)                       (838)
Equity in net income of affiliates       126      180                      306         --                         306
Other income (expense) - net             (77)   1,498                    1,421         (1)                      1,420
INCOME BEFORE INCOME TAX AND
   CUMULATIVE EFFECT OF
   ACCOUNTING CHANGE                   2,946    3,425                    6,371        175                       6,546
Income taxes                           1,068    1,225                    2,293         66                       2,359
INCOME BEFORE CUMULATIVE EFFECT OF   
   ACCOUNTING CHANGE                   1,878    2,200                    4,078        109                       4,187
Cumulative Effect of Accounting
   Change, net of tax                     --       --                       --         16                          16

   NET INCOME                        $ 1,878  $ 2,200                  $ 4,078     $  125                     $ 4,203
EARNINGS PER COMMON SHARE-
   BASIC:(2C)
INCOME BEFORE CUMULATIVE EFFECT OF                                                          
   ACCOUNTING CHANGE                 $  1.02  $  2.00                  $  1.24     $ 1.62                     $  1.23

NET INCOME                           $  1.02  $  2.00                  $  1.24     $ 1.85                     $  1.23
WEIGHTED AVERAGE NUMBER OF 
   COMMON SHARES OUTSTANDING           1,839    1,100       348          3,287         68         51            3,406
EARNINGS PER COMMON
   SHARE-ASSUMING DILUTION:(2C)
INCOME BEFORE CUMULATIVE EFFECT
   ACCOUNTING CHANGE                 $  1.01  $  1.98                  $  1.23    $  1.60                     $  1.22

NET INCOME                           $  1.01  $  1.98                  $  1.23    $  1.83                     $  1.22
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>

                                       66

<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/
                                                                               AMERITECH                                    SNET
                                            HISTORICAL           PRO FORMA     PRO FORMA     HISTORICAL    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>
    

                                       67

<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/
                                                                               AMERITECH                                    SNET
                                            HISTORICAL           PRO FORMA     PRO FORMA     HISTORICAL    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>
    

                                       68

<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/
                                                                               AMERITECH                                    SNET
                                            HISTORICAL           PRO FORMA     PRO FORMA     HISTORICAL    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>
    

                                       69

<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

                                       70

<PAGE>

     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.

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 INVESTMENT IN TELECOM CORPORATION OF
         NEW ZEALAND LIMITED BY AMERITECH

During the six months ended June 30, 1998,  Ameritech sold  substantially all of
its shares in Telecom  Corporation of New Zealand Limited for approximately $2.1
billion.  Ameritech reflected a gain in its "other income" of approximately $1.5
billion, which resulted in an after-tax gain of $1.0 billion. Additional details
of this  transaction  are  summarized in  Ameritech's  Form 10-Q For the quarter
ended June 30, 1998.
    

                                       71

<PAGE>

                        DESCRIPTION OF SBC CAPITAL STOCK

   
         The following description of material 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 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.

                                       72

<PAGE>

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 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-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

                                       73

<PAGE>

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 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

                                       74

<PAGE>

among the rights of the  shareowners of SBC and  Ameritech,  sets forth material
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.
    

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.

                                       75

<PAGE>

         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.


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 in person or represented by proxy
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.

                                       76

<PAGE>

         Ameritech

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


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

                                       77
<PAGE>

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.

         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,

                                       78

<PAGE>

(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.

         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.

       

                                     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  PricewaterhouseCoopers  LLP
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


                                       79
<PAGE>

by reference.  Such consolidated financial statements are incorporated herein by
reference in reliance upon  authority of such firm as experts in accounting  and
auditing.

   
         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  PricewaterhouseCoopers   LLP,
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 the 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.

                                       80

<PAGE>

       

                             INDEX OF DEFINED TERMS

Term                                                                       Page
- ----                                                                       ----

   
1997 Ameritech 10-K........................................................iii
1997 SBC 10-K..............................................................iii
1997 SNET 10-K..............................................................iv
Acquiring Person............................................................44
Acquisition Proposal.........................................................5
ADS.........................................................................72
Affiliates..................................................................55
Ameritech....................................................................i
Ameritech Acquisition Proposal...............................................5
Ameritech Affiliates Letter.................................................56
Ameritech Board..............................................................i
Ameritech Bylaws............................................................12
Ameritech Cellular..........................................................30
Ameritech Certificate.......................................................41
Ameritech Charter...........................................................12
Ameritech Common Stock.......................................................i
Ameritech Distribution Date.................................................78
Ameritech Option.............................................................7
Ameritech Record Date........................................................2
Ameritech Representatives...................................................46
Ameritech Required Consents.................................................52
Ameritech Right.............................................................78
Ameritech Rights Agreement..................................................43
Ameritech Special Meeting....................................................i
Ameritech Stock Split.......................................................13
Ameritech Stock Units.......................................................50
Ameritech Telco.............................................................30
Applicants..................................................................49
BSE........................................................................iii
Bylaw Amendment..............................................................i
Cable Franchise Agreement....................................................6
Certificate Letter of Transmittal...........................................42
Certificate of Merger........................................................4
Changes in Control Agreements...............................................58
Closing Date.................................................................7
Code.........................................................................i
Communications Act...........................................................6
Compensation Committee......................................................59
Continuing Directors........................................................78
Costs........................................................................7
CSE........................................................................iii
Current Premium..............................................................8
Currently Applicable Law....................................................60
D&O Insurance................................................................8
Department of Justice........................................................6
DGCL.........................................................................i
EBITDA......................................................................31
Effective Time...............................................................2
Engagement Letter...........................................................36
EPS.........................................................................33
Exchange Act...............................................................iii
Exchange Agent..............................................................41
Exchange Procedures.........................................................41
Exchange Ratio...............................................................i
Excluded Ameritech Common Stock..............................................i
Factual Representations.....................................................60
FCC..........................................................................6
Final Expiration Date.......................................................44
Final Order.................................................................52
FTC..........................................................................6
Goldman Sachs................................................................4
Goldman Sachs Engagement Letter.............................................40
Governmental Entity.........................................................43
Historical Exchange Ratio...................................................30
HSR Act......................................................................6
IBES........................................................................37
ICC.........................................................................49


                                       81

<PAGE>


ICC Application..............................................................49
Illinois Telecommunications Carriers.........................................49
Indemnified Party............................................................ 7
Independent Telcos...........................................................31
IPUA.........................................................................49
IRS..........................................................................60
LD Certificates..............................................................50
LE Certificates..............................................................50
Material Adverse Effect......................................................48
Merger........................................................................i
Merger Agreement..............................................................i
Merger Consideration..........................................................3
Merger Proposal...............................................................i
Merger Sub....................................................................i
Named Executive Officers.....................................................57
Notification and Report Form..................................................6
NYNEX Merger.................................................................37
NYSE..........................................................................i
Ohio Act.....................................................................49
Ohio Application.............................................................49
Ohio Bell....................................................................49
OPUC.........................................................................49
Order.........................................................................8
Overlapping Cellular Licenses................................................49
Pactel Acquisition...........................................................37
PCS Comparable Company.......................................................31
PE Multiples.................................................................33
Person.......................................................................42
PHLX........................................................................iii
POP..........................................................................31
PSE.........................................................................iii
Publishing Comparable Company................................................31
PUC...........................................................................6
PUCO.........................................................................49
Redemption Price.............................................................74
Registered Ameritech Share...................................................41
Registered Letter of Transmittal.............................................42
Registered SBC Shares........................................................41
Registration Statement.......................................................ii
Regulatory Material Adverse Effect...........................................48
RHBC.........................................................................30
Salomon Smith Barney..........................................................3
SBC...........................................................................i
SBC Acquiring Person.........................................................73
SBC Acquisition Proposal......................................................5
SBC Adverse Person...........................................................73
SBC Affiliates Letter........................................................56
SBC Board.....................................................................i
SBC Bylaws....................................................................i
SBC Cellular.................................................................33
SBC Common Stock..............................................................i
SBC Distribution Date........................................................74
SBC Flip Over Event..........................................................74
SBC Flip-in Event............................................................74
SBC Other Assets.............................................................33
SBC Participating Preferred..................................................72
SBC PCS......................................................................33
SBC Preferred Stock..........................................................72
SBC Publishing...............................................................33
SBC Record Date...............................................................2
SBC Representatives..........................................................46
SBC Required Consents........................................................52
SBC Rights...................................................................ii
SBC Rights Agreement.........................................................ii
SBC Rights Expiration Date...................................................ii
SBC Rights Record Date.......................................................73
SBC Special Meeting...........................................................i
SBC Stock Acquisition Date...................................................73
SBC Stock Split..............................................................13
SBC Stock Units..............................................................51
SBC Substitute Rights........................................................ii
SBC Synergy Estimates........................................................35
SBC Telco....................................................................33
SBC Unit.....................................................................73
SEC.........................................................................iii
Securities Act...............................................................ii
Selected Companies...........................................................37
Severance Plan...............................................................58
Services and Non-Compete Agreements..........................................59
Short Term Incentive Plans.................................................. 59
Significant Subsidiaries.....................................................43
SNET..........................................................................i
SNET Agreement...............................................................45
SNET Common Stock............................................................70
Special Meetings..............................................................i


                                       82

<PAGE>


State Certificates...........................................................50
Subsidiary...................................................................43
Substitute Option.............................................................7
Substitute Option Price.......................................................7
Superior Ameritech Proposal...................................................5
Superior Proposal.............................................................5
Superior SBC Proposal.........................................................5
Surviving Corporation.........................................................i
Termination Date..............................................................9
Termination Fee..............................................................10
WACC.........................................................................32
    

                                       83

<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
   



[Form of Opinion of Salomon Smith Barney]







May 10, 1998



Board of Directors
SBC Communications Inc.
175 East Houston
San Antonio TX 78205

Members of the Board:

You have  requested  our opinion as to the fairness,  from a financial  point of
view, to SBC Communications  Inc.  ("Parent") of the consideration to be paid by
Parent in connection with the proposed business  combination  between Parent and
Ameritech  Corporation  (the  "Company")  pursuant to the  Agreement and Plan of
Merger (the "Agreement"),  dated as of May 10, 1998, among the Company,  Parent,
and SBC Delaware, Inc., a wholly owned subsidiary of Parent ("Sub"). Pursuant to
the terms of the  Agreement,  Sub will  merge (the  "Merger")  with and into the
Company,  and each  share of common  stock,  $1.00 par value per  share,  of the
Company ("Company Common Stock") issued and outstanding immediately prior to the
Merger (other than shares of Company  Common Stock owned by Parent or Sub or any
other  direct or  indirect  subsidiary  of Parent or owned by the Company or any
direct or indirect subsidiary of the Company, in each case not held on behalf of
third  parties) will be converted  into and become  exchangeable  for 1.316 (the
"Exchange  Ratio") shares of common stock,  $1.00 par value per share, of Parent
("Parent  Common  Stock").  We  understand  that the  Merger is  expected  to be
accounted for as a  pooling-of-interests  in accordance with generally  accepted
accounting  principles  and is  expected  to  qualify,  for  federal  income tax
purposes,  as a  reorganization  under the  provisions of Section 368 (a) of the
Internal Revenue Code of 1986, as amended.

In connection  with  rendering our opinion,  we have reviewed  certain  publicly
available  information  with respect to Parent and the Company and certain other
financial  information  with  respect  to  Parent  and  the  Company,  including
financial  forecasts,  that  were  provided  to us by  Parent  and the  Company,
respectively.  We have  discussed the past and current  business  operations and
financial  conditions  of Parent  and the  Company  as well as other  matters we
believe  relevant to our inquiry,  including  matters relating to the regulatory
approvals required to consummate the Merger, with certain officers and employees
of Parent and the  Company,  respectively.  We have also  considered  such other
information, financial studies, analyses, investigations and financial, economic
and market criteria that we deemed relevant.

In our review and analysis  and in arriving at our opinion,  we have 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  us,  and  we  have  not  assumed  any
responsibility for independent verification of such information. With respect to
the  financial  forecasts of Parent and the  Company,  we have assumed that they
have been reasonably  prepared on bases reflecting the best currently  available
estimates and judgments of the  respective  managements of Parent or the Company
as to the future financial  performance of Parent or the Company,  respectively,
and we express no view with  respect to such  forecasts  or the  assumptions  on
which they are based.  We also have assumed that the Merger will be  consummated
in accordance with the terms of the Agreement.  We have not made or obtained, or
assumed any responsibility for making or obtaining,  any independent evaluations
or appraisals of any of the assets  (including  properties  and  facilities)  or
liabilities of Parent or the Company.

                                      B-1
<PAGE>


Our  opinion  is  necessarily  based  upon  conditions  as they exist and can be
evaluated on the date hereof.  Our opinion as expressed below does not imply any
conclusion  as to the trading  range for the Parent  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.
Our opinion does not address Parent's underlying business decision to effect the
Merger. Our opinion is directed only to the fairness,  from a financial point of
view, of the Exchange Ratio to Parent and does not  constitute a  recommendation
concerning  how holders of Parent  Common  Stock should vote with respect to the
transactions contemplated by the Agreement.

We have  acted as  financial  advisor  to the  Board of  Directors  of Parent in
connection  with the Merger  and will  receive a fee for our  services,  part of
which is contingent upon  consummation of the Merger.  In the ordinary course of
business,  we (including our current and future  affiliates)  may actively trade
the  securities  of Parent  and the  Company  and their  affiliates  for our own
account and for the accounts of customers and, accordingly, may at any time hold
a long or short position in such  securities.  Also, we and our affiliates  have
previously rendered investment banking and financial advisory services to Parent
and the  Company  and  certain of their  affiliates  for which we have  received
customary  compensation.  We (including our current and future  affiliates)  may
have other business  relationships with Parent, the Company and their respective
affiliates.

Based upon and subject to the foregoing,  it is our opinion that, as of the date
hereof, the Exchange Ratio is fair to Parent from a financial point of view.

Very truly yours,





SALOMON SMITH BARNEY
    







                                       B-2

<PAGE>



   
                                                                        ANNEX C


[Form of Opinion of Goldman, Sachs & Co.]




PERSONAL AND CONFIDENTIAL


May 10, 1998


Board of Directors
Ameritech Corporation
30 South Wacker Drive
Chicago, IL  60606

Ladies and Gentlemen:

You have requested our opinion as to the fairness from a financial point of view
to the holders of the  outstanding  shares of common stock,  par value $1.00 per
share (the "Shares"),  of Ameritech  Corporation (the "Company") of the exchange
ratio of 1.316  shares  of common  stock,  par value  $1.00  per  share,  of SBC
Communications Inc. ("SBC") to be received for each Share (the "Exchange Ratio")
pursuant to the  Agreement and Plan of Merger,  dated as of May 10, 1998,  among
SBC, SBC Delaware,  Inc., a wholly-owned subsidiary of SBC, and the Company (the
"Agreement").

Goldman, Sachs & Co., 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.  We are familiar with
the Company having provided certain  investment  banking services to the Company
from time to time,  including:  (i)  having  acted as  financial  advisor to the
Company  with  respect  to the  Company's  acquisition  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 the
Company,  on April 20, 1998,  (iii) having  acted as managing  underwriter  of a
public  offering of $1.75 billion of notes and debentures  issued by the Company
on January 15, 1998,  and (iv) having acted as financial  advisor to the Company
in connection with, and participated in certain of the negotiations  leading to,
the Agreement.  We also have 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 & Co.
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 the
Company or SBC for its own account and for the accounts of customers.  As of May
6, 1998,  Goldman,  Sachs & Co. has  accumulated  (i) a long position of 287,383
Shares against which Goldman,  Sachs & Co. is short 191,694 Shares, (ii) a short
position of 1,431,742 shares of common stock of SBC against which Goldman, Sachs
& Co. is long 446,807 shares of common stock of SBC,  options to purchase 40,000
shares of common stock of SBC, and 10,100  convertible bonds of SBC, and (iii) a
long  position  of  666,000  shares  of common  stock of  Southern  New  England
Telecommunications Corporation.

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

                                      C-1
<PAGE>

have also held discussions with members of the senior  management of the Company
and SBC regarding the strategic  rationale  for, and potential  benefits of, the
transaction  contemplated by the Agreement,  including a discussion of potential
synergies expected to be derived as a result of the transaction  contemplated by
the  Agreement.  In addition,  we have  reviewed the reported  price and trading
activity for the Shares and SBC's common stock,  compared certain  financial and
stock market  information  for the Company 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 we considered appropriate.

We have relied upon the accuracy and  completeness  of all of the  financial and
other information reviewed by us and have assumed such accuracy and completeness
for  purposes  of  rendering  this  opinion.  In  addition,  we have not made an
independent evaluation or appraisal of the assets and liabilities of the Company
or SBC or any of their subsidiaries and we have not been furnished with any such
evaluation  or  appraisal.  We also have  assumed that the  transaction  will be
accounted  for as a pooling of interests  under  generally  accepted  accounting
principles.

Our  advisory  services  and the opinion  expressed  herein are provided for the
information  and  assistance  of  the  Board  of  Directors  of the  Company  in
connection  with  its  consideration  of  the  transaction  contemplated  by the
Agreement  and such  opinion  may not be used or quoted  for any  other  purpose
without  our prior  written  consent.  The  opinion  expressed  herein  does not
constitute  a  recommendation  as to how any holder of Shares  should  vote with
respect to such transaction.

Based upon and subject to the  foregoing and based upon such other matters as we
consider  relevant,  it is our opinion  that as of the date hereof the  Exchange
Ratio  pursuant to the  Agreement is fair from a financial  point of view to the
holders of Shares.

Very truly yours,
    









                                       C-2

<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.





                                        1

<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 material federal
               income tax consequences.*

     8-b       Opinion of Skadden, Arps, Slate, Meagher & Flom (Illinois)
               regarding material federal income tax matters.*

     23-a      Consent of Ernst & Young LLP.**
     
     23-b      Consent of Arthur Andersen LLP.**

     23-c      Consent of PricewaterhouseCoopers LLP (Hartford, CT).**

     23-d      Consent of PricewaterhouseCoopers LLP (San Francisco, CA).**


- --------
*    To be filed by Amendment
**   Filed herewith



                                        2

<PAGE>


     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).*

     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      Form of Opinion of Salomon Smith Barney (included as Annex B to
               the Joint Proxy Statement/Prospectus contained in this
               Registration Statement).

     99-d      Form of 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

- --------
 *     To be filed by Amendment

 **    Filed herewith

 ***   Filed previously

                                        3

<PAGE>


          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  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.


                                        4

<PAGE>



         (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.




                                        5

<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  Amendment
No.  1 to  the  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 17th day of August, 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:                               August 17, 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*
- ----------------------------
*  By power of attorney

                                        6

<PAGE>


Mary S. Metz*
Haskell M. Monroe, Jr.*
Toni Rembe*
S. Donley Ritchey*
Richard M. Rosenberg*
Carlos Slim Helu*
Patricia P. Upton*









                                                                   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
Amendment  No. 1 to the  Registration  Statement on Form S-4  (Registration  No.
333-56141) 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
August 17, 1998
    







                                                                   EXHIBIT 23-b




                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

   
As independent  public  accountants,  we hereby consent to the  incorporation by
reference  in this  Amendment  No. 1 to the  Registration  Statement on Form S-4
("Amendment  No.  1")  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  Amendment No. 1 and the related Joint
Proxy Statement/Prospectus.
    


                                                 /s/ Arthur Andersen LLP



   
Chicago, Illinois
August 17, 1998
    













                                                                   EXHIBIT 23-c




                       CONSENT OF INDEPENDENT ACCOUNTANTS

   
We consent to the  incorporation  by  reference in this  Amendment  No. 1 to the
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".




                                              PricewaterhouseCoopers LLP

Hartford, Connecticut
August 12, 1998
    






                                                                    EXHIBIT 23-d




   
                       CONSENT OF INDEPENDENT ACCOUNTANTS

We consent to the  reference  to our firm under the  caption  "Experts"  in this
Amendment  No. 1 to the  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/PricewaterhouseCoopers LLP



San Francisco, California

August 17, 1998
    




                                       11



   
                                                                   EXHIBIT 23-h




                         CONSENT OF SALOMON SMITH BARNEY

     Salomon Brothers Inc and Smith Barney Inc. (collectively doing business as
"Salomon Smith Barney") hereby consent to the use of our names and to the
description of our opinion letter, dated May 10, 1998 in, and to the inclusion
of such opinion letter as Annex B to, the Joint Proxy Statement/Prospectus of
SBC Communications Inc. and Ameritech Corporation, which Joint Proxy Statement/
Prospectus is part of the Registration Statement on Form S-4 of SBC
Communications Inc. By giving such consent, we do not hereby admit that we are
experts with respect to any part of such Registration Statement within the
meaning of the term "expert" as used in, or that we come within the category of
persons whose consent is required under, the Securities Act of 1933, as amended,
or the rules and regulations of the Securities and Exchange Commission promul-
gated thereunder.

                                                 SALOMON BROTHERS INC
                                                 SMITH BARNEY INC.

                                                 By Salomon Brothers Inc



                                                 /s/ Gregg S. Polle
                                                 ------------------------------
                                                 Managing Director


New York, New York
August 17, 1998
    





   
                                                                    EXHIBIT 23-i
    





   

                                                                    EXHIBIT 99-a
                     [Form of Face of Ameritech Proxy Card]


                               [GRAPHIC OMITTED]

                       1998 Special Meeting of Shareowners

                             _________________, 1998

                                 (SITE ADDRESS)
                  --------------------------------------------

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

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

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


                          Meeting Begins at __________

        Cameras and recording devices will not be allowed in the meeting


                                ADMITTANCE TICKET

       This ticket entitles you, the shareowner, and one guest to attend
                              the Special Meeting.


     For wheelchair and hearing impaired seating, please see a host/hostess
                                for assistance.
    

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


                              AMERITECH CORPORATION
                 This Proxy is Solicited on Behalf of The Board
                     of Directors of Ameritech Corporation
                               30 S. Wacker Drive
                             Chicago, Illinois 60606


   
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 (*), 1998, at (*), local time,
at (*) 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.

This proxy when properly executed will be voted as specified on the
reverse side. If no specification is made, this proxy will be voted FOR the
proposal to adopt the Merger Agreement.

This card also serves as voting  instructions  for shares held in the  Ameritech
Direct Services  Investment Plan and, shares held in the Ameritech  Savings Plan
for  Salaried   Employees  and  the  Ameritech  Savings  Plan  for  Non-Salaried
Employees,   as   described   in  the  Joint  Proxy   Statement/Prospectus,   if
registrations are identical.

Notwithstanding shareowner 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.


<PAGE>



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 submit your proxy by telephone  or  Internet,  please see the reverse side of
this card. To submit your proxy by mail, please mark, sign, date and return this
proxy card in the enclosed envelope. No postage is required.





                                        2

<PAGE>

                    [FORM OF REVERSE OF AMERITECH PROXY CARD]

                                       Ameritech corporation encourages  you to
                                       take advantage of one of the three proxy
                                       submission  methods  outlined  below  to
                                       cast  your  ballot. We've made it easier
                                       than ever.

                                       SUBMIT YOUR PROXY BY PHONE
                                       1-800-690-6903   -  Use  any   touch-tone
                                       telephone to submit your proxy 24 hours a
                                       day, 7 days a week.  Have your proxy card
                                       in  hand  when  you  call.  You  will  be
                                       prompted  to enter the  12-digit  Control
                                       Number which is located  below.  You will
                                       then   be   asked   to   provide   voting
                                       instructions on the proposal to adopt the
                                       Merger Agreement. Your voting instruction
                                       will be  repeated  to you and you will be
                                       asked to confirm them.

                                       SUBMIT YOUR PROXY BY INTERNET -
                                       www.proxyvote.com  - Use the  Internet to
                                       submit  your proxy 24 hours a day, 7 days
                                       a week. Have your proxy card in hand when
                                       you  access  the web  site.  You  will be
                                       prompted  to enter the  12-digit  Control
                                       Number  which is located  below to obtain
                                       your  records  and  create an  electronic
                                       ballot. You will then be asked to provide
                                       voting  instruction  on the  proposal  to
                                       adopt  the  Merger   Agreement,   and  to
                                       confirm your submission.

Your electronic proxy authorizes       SUBMIT  YOUR  PROXY  BY MAIL - Mark, sign
the named proxies to vote your         and date your proxy card and return it in
shares to the same extent as if        the postage-paid  envelope we've provided
you marked, signed, dated and          or return  it  to  Ameritech Corporation,
returned the proxy card. If you        c/o ADP,  51 Mercedes Way,  Edgewood,  NY
submit your proxy by phone or          11717.
through the internet, please do
not mail your proxy.
THANK YOU FOR VOTING.

- ------------------------------------------------------------------
CONTROL NUMBER:
- ------------------------------------------------------------------

TO PROVIDE VOTING INSTRUCTIONS, MARK BLOCKS BELOW IN BLUE OR BLACK INK 
AS FOLLOWS
- -------------------------------------------------------------------------------
                                            DETACH AND RETURN THIS PORTION ONLY

          This Proxy is Solicited on Behalf of the Board of Directors
                            of Ameritech Corporation
    
                              The-undersigned directs that this proxy
                              be-voted-as-follows:
   
  For   Against   Abstain
  |_|     |_|       |_|       (1)  To approve 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
                                   ("Merger Sub") wholly owned  by 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  with
                                   and into  Ameritech and Ameritech will become
                                   a wholly owned subsidiary of SBC.

                              (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.

SIGNATURE                             DATE


Note:     Please sign exactly as name appears hereon.  Joint owners  should each
          sign.  When signing as an attorney, executor,  administrator,  trustee
          or  guardian, give full title as such. If signed by a corporation, the
          proxy should be by a duly authorized representative and state the name
          of the corporation the authorized corporate representative.

                                        3
<PAGE>

           [FORM OF INSTRUCTIONS FOR AMERITECH REGISTERED SHAREOWNERS]

WAIT! THERE'S AN EASIER WAY TO SUBMIT YOUR PROXY.
      24 HOURS A DAY -- 7 DAYS A WEEK                  [GRAPHIC OMITTED]

SUBMIT YOUR PROXY BY TELEPHONE           SUBMIT YOUR PROXY BY INTERNET         
- -----------------------------------      --------------------------------------
It's  fast,  convenient,  and  your      It's  fast,  convenient,  and   your  
submission is immediately confirmed      submission is immediately confirmed   
and posted.                              and posted.


CALL TOLL-FREE ON A TOUCH-TONE PHONE               GO TO WEBSITE:
           1-800-690-6903                        WWW.PROXYVOTE.COM

JUST FOLLOW THESE FOUR EASY STEPS:       JUST FOLLOW THESE FOUR EASY STEPS:
- -------------------------------------    ---------------------------------------

1. Read the accompanying Joint Proxy     1. Read the accompanying Joint Proxy
   Statement/Prospectus and proxy           Statement/Prospectus and proxy
   card.                                    card.

2. Call the toll-free number:            2. Go to the web site,
   1-800-690-6903.                          www.proxyvote.com. 

3. Enter your 12-digit Control Number    3. Enter your 12-digit Control Number
   located on your proxy card.              located on your proxy card.

4. Follow the simple recorded            4. Follow the simple instructions.
   instructions.
- -------------------------------------    ---------------------------------------

     YOUR VOTE IS IMPORTANT!                   YOUR VOTE IS IMPORTANT!
       CALL 1-800-690-6903                     GO TO WWW.PROXYVOTE.COM
         24 HOURS A DAY                           24 HOURS A DAY

               IF YOU SUBMIT YOUR PROXY BY TELEPHONE OR INTERNET,
                         DO NOT RETURN YOUR PROXY CARD.
                      THANK YOU FOR YOUR PROXY SUBMISSION.



                                       4
    

   
                                                                    EXHIBIT 99-b


               [FORM OF INSTRUCTIONS ACCOMPANYING SBC PROXY CARD]

Submit your proxy by mail or telephone.

Dear SBC Shareowner:

You can now submit your proxy with voting instructions either by telephone or by
completing  the proxy  below  and  returning  it in the  enclosed  postage  paid
envelope.  To submit  your proxy with voting  instructions  by  telephone,  call
1-800-_______  (only  available in the United  States) to authorize  the proxies
indicated  below to vote your  shares as if you marked and  returned  your proxy
card.  You will be asked to enter a control number which is located below in the
box marked "CONTROL NUMBER". You will then hear these instructions:

OPTION #1: To have your shares voted as the Board of Directors recommends on ALL
matters,  which is FOR the  issuance  of shares of SBC Common  Stock and FOR the
Bylaw  Amendment,  both of which are  described in the proxy card you  received,
press 1 now.

OPTION #2: If you choose to provide voting  directions on each item  separately,
press 0 now.

     Item  1--Issuance of shares of SBC Common Stock:  To have your shares voted
     FOR this proposal, press 1; AGAINST, press 9; ABSTAIN, press 0.

     Item 2--The Bylaw  Amendment:  To have your shares voted FOR this proposal,
     press 1; AGAINST, press 9; ABSTAIN, press 0.

AFTER YOU SUBMIT YOUR VOTING INSTRUCTIONS, YOUR CHOICES WILL BE REPEATED BACK TO
YOU. AFTER REVIEWING YOUR CHOICES, PRESS 1 TO CONFIRM YOUR VOTING INSTRUCTIONS.

     If you submit your voting  instructions  by telephone  there is no need for
     you to mail back your proxy. THANK YOU FOR VOTING!

     CONTROL NUMBER ________________

     Call ** Toll  Free  ** on a U.S.  Touch  Tone  Telephone  1-800-________  -
     Anytime

     There is NO CHARGE to you for this call.


           [FORM OF DIRECTIONS TO MEETING ACCOMPANYING SBC PROXY CARD]
                       [GRAPHIC - MAP OF SAN ANTONIO AREA]

The Alzafar Shrine Temple is located at 901 North Loop 1604 West in San Antonio,
on the  west-bound  frontage  road between the Stone Oak Parkway and Blanco Road
exits.

                                Admission Ticket
                             SBC Communications Inc.
                          Annual Meeting of Shareowners
                                 April 24, 1998
                              Alzafar Shrine Temple
                            901 North Loop 1604 West
                            San Antonio, Texas 78216

          DETACH PROXY CARD HERE IF YOU ARE NOT SUBMITTING YOUR PROXY
                     WITH VOTING INSTRUCTIONS BY TELEPHONE



<PAGE>

                        [FORM OF FACE OF SBC PROXY CARD]

                                   [SBC LOGO]

Your Directors recommend a vote "for" the Director proposals 1 and 2.

     1. Issuance of shares

      [_]    FOR               [_]     AGAINST             [_]    ABSTAIN

     2. Bylaw Amendment

      [_]    FOR               [_]     AGAINST             [_]    ABSTAIN

COMMENTS:  If you have noted  either an Address  Change or Comments on the other
side of this cord, mark here.  [_]

Please  sign  exactly as name or names  appear on this  proxy.  If stock is held
jointly,  each holder  should sign. If signing as attorney,  trustee,  executor,
administrator, custodian, guardian or corporate officer, please give full title.


SIGNATURE(S):
                                        Voting  instructions  MUST be  indicated
- ----------------------------------      (X) in Black or Blue ink|X| Please Sign,
                                        Date and Return the Proxy Card  Promptly
- ----------------------------------      Using the Enclosed Envelope.
DATE


                       [FORM OF REVERSE OF SBC PROXY CARD]


[SBC LOGO] SBC Communications Inc.                 PROXY/VOTING INSTRUCTION CARD


This proxy is  solicited  on behalf of the Board of  Directors  for the  Special
Meeting on [date], 1998.

The undersigned  hereby appoints the following persons proxies,  with full power
of  substitution,   to  vote  all  common  shares  of  the  undersigned  in  SBC
Communications  Inc. at the Special  Meeting to be held on [date],  1998, and at
any  adjournment  thereof,  upon all subjects  that may properly come before the
meeting, including the matters described in the Joint Proxy Statement/Prospectus
furnished herewith,  in accordance with the directions  indicated on the reverse
side  of  this  card or  through  the  telephone  proxy  procedures,  and at the
discretion of the proxies on any other matters that may properly come before the
meeting. If specific voting directions are not given with respect to the matters
to be acted upon and the  signed  card is  returned,  the  proxies  will vote in
accordance with the Directors'  recommendations  provided on the reverse side of
this card. (If you make any changes to this paragraph, you must mark the box for
"Comments" on the reverse side of this card in order to process your request.)

The Board of Directors  recommends  a vote "for" each of the Director  proposals
listed as the reverse side of this card.

Please sign on the reverse side of this card and return  promptly to  [address];
or, if you choose, you can submit your proxy by calling  1-800-___-____.  If you
do not sign and return a proxy,  submit your proxy by  telephone,  or attend the
Special Meeting and vote by ballot, your shares cannot be voted.

This proxy card or your telephone proxy will constitute  voting  instructions to
the plan administrator or trustee for shares held in SBC's Direct Stock Purchase
and Reinvestment Plan (formerly the Dividend Reinvestment Plan) or in any of the
following SBC employee benefit plans: the PAYSOP,  the 

                                       2
<PAGE>


Savings Plan, the Savings and Security  Plan, the Pacific  Telesis Group ("PTG")
Supplemental  Retirement  and  Savings  Plan  for  Salaried  Employees,  the PTG
Supplemental Retirement and Savings Plan for Non-Salaried Employees, and the PTG
PAYSOP. If proxy cards or telephone proxies representing shares in the foregoing
employee benefit plans are not received, those shares will be voted with respect
to each Plan in the same proportion as the shares for which voting  instructions
are received from other participants.



                                                SBC COMMUNICATIONS INC.
                                                P.O. BOX 1138
                                                NEWARK, N.J. 07101-9758






General comments:

- --------------------------------------------------------------------------------
(IF YOU HAVE WRITTEN IN THE ABOVE SPACE,  PLEASE MARK THE BOX FOR  "COMMENTS" ON
THE  REVERSE  SIDE OF THIS CARD SO THAT YOUR  COMMENTS  CAN BE  DIRECTED  TO THE
APPROPRIATED GROUP FOR REVIEW.)    (Continued, and please sign on reverse side.)

    
                                       3


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission