COMCAST CORP
8-K, 1999-03-24
CABLE & OTHER PAY TELEVISION SERVICES
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==============================================================================

                    SECURITIES AND EXCHANGE COMMISSION
                          Washington, D.C. 20549


                                 FORM 8-K

                              CURRENT REPORT
                      Pursuant to Section 13 or 15(d)
                  of the Securities Exchange Act of 1934


     Date of Report (Date of earliest event reported): March 22, 1999


                            Comcast Corporation
- ------------------------------------------------------------------------------
          (Exact Name of Registrant as Specified in its Charter)



        Pennsylvania                    0-6983               23-1709202
- ----------------------------   ------------------------   -------------------
(State or Other Jurisdiction   (Commission File Number)      (IRS Employer
     of Incorporation)                                     Identification No.)



           1500 Market Street
            Philadelphia, PA                                19102-2148
- ----------------------------------------             -------------------------
(Address of Principal Executive Offices)                    (Zip Code)



                              (215) 665-1700
- ------------------------------------------------------------------------------
           (Registrant's telephone number, including area code)



- ------------------------------------------------------------------------------
       (Former Name or Former Address, if Changed Since Last Report)


==============================================================================


               ITEM 5. Other Events.

               On March 22, 1999, Comcast Corporation, a Pennsylvania
corporation ("Comcast"), and MediaOne Group, Inc., a Delaware corporation
("MediaOne"), entered into an Agreement and Plan of Merger (the "Merger
Agreement").  Pursuant to the Merger Agreement and subject to the terms and
conditions set forth therein, MediaOne will be merged with and into
Comcast, with Comcast to be the surviving corporation of the merger (the
"Merger").

               At the Effective Time (as defined in the Merger Agreement) of
the Merger, each issued and outstanding share of Common Stock, par value $.01
per share (the "MediaOne Common Stock"), of MediaOne will be converted into
the right to receive 1.10 shares of Class A Special Common Stock, par value
$1.00 per share (the "Comcast Common Stock"), of Comcast (subject to
adjustment for the conditional dividend declared on March 3, 1999 of one
share of Comcast Common Stock for each share of Comcast Common Stock held
of record on April 20, 1999).  The preferred stock purchase rights
associated with each share of MediaOne Common Stock, issued pursuant to
MediaOne Rights Agreements (as defined in the Merger Agreement), will be
terminated immediately prior to the Effective Time.

               A copy of the Merger Agreement is attached hereto as Exhibit
2.1.  The foregoing description is qualified in its entirety by reference to
the full text of such exhibit.  A joint press release announcing the entering
into of the Merger Agreement was issued on March 22, 1999.  The information
contained in the press release is incorporated herein by reference.  The press
release is attached hereto as Exhibit 99.1.

               ITEM 7(c).  Exhibits.

               Exhibit 2.1  Agreement and Plan of Merger dated as of March 22,
                            1999 between Comcast Corporation and MediaOne
                            Group, Inc.  (Schedules and Exhibits omitted).

               Exhibit 99.1 Joint Press Release dated March 22, 1999.


                                 SIGNATURE

               Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned hereunto duly authorized.



                                        COMCAST CORPORATION


Dated: March 24, 1999                   By: /s/ Arthur R. Block
                                           ------------------------------
                                           Name:  Arthur R. Block
                                           Title: Vice President and
                                                  Senior Deputy General
                                                  Counsel


                             INDEX TO EXHIBITS



Exhibit No.                        Description
- ----------                         -----------

Exhibit 2.1         Agreement and Plan of Merger dated as of
                    March 22, 1999 between Comcast
                    Corporation and MediaOne Group, Inc.
                    (Schedules and Exhibits omitted).

Exhibit 99.1        Joint Press Release dated March 22, 1999.



                                                                  EXHIBIT 2.1

                         AGREEMENT AND PLAN OF MERGER

                                  dated as of

                                March 22, 1999

                                    between

                             MEDIAONE GROUP, INC.

                                      and

                              COMCAST CORPORATION



                               TABLE OF CONTENTS

                                                                          Page
                                                                          ----
                                 ARTICLE 1
                                Definitions

Section 1.1.  Definitions..................................................  1

                                 ARTICLE 2
                                The Merger

Section 2.1.  The Merger................................................... 10
Section 2.2.  Articles of Incorporation and Bylaws of the Surviving
                Corporation................................................ 11
Section 2.3.  Articles of Incorporation of Comcast......................... 11
Section 2.4.  Directors and Officers of the Surviving Corporation.......... 11
Section 2.5.  Alternative Transaction Structure............................ 12

                                 ARTICLE 3
                         Conversion of Securities

Section 3.1.  Conversion of Capital Stock.................................. 13
Section 3.2.  Surrender and Payment........................................ 14
Section 3.3.  Dissenting Shares............................................ 17
Section 3.4.  Stock Options................................................ 17
Section 3.5.  Adjustments.................................................. 18
Section 3.6.  Fractional Shares............................................ 19
Section 3.7.  Withholding Rights........................................... 19
Section 3.8.  Lost Certificates............................................ 20

                                 ARTICLE 4
                Representations and Warranties of MediaOne

Section 4.1.  Corporate Existence and Power................................ 20
Section 4.2.  Corporate Authorization...................................... 20
Section 4.3.  Governmental Authorization................................... 21
Section 4.4.  Non-contravention............................................ 21
Section 4.5.  Capitalization............................................... 22
Section 4.6.  Subsidiaries................................................. 23
Section 4.7.  SEC Filings.................................................. 24
Section 4.8.  Financial Statements......................................... 24
Section 4.9.  Information Supplied......................................... 25
Section 4.10. Absence of Certain Changes................................... 25
Section 4.11. No Undisclosed Material Liabilities.......................... 26
Section 4.12. Compliance with Laws and Court Orders........................ 26
Section 4.13. Litigation................................................... 26
Section 4.14. Finders' Fees................................................ 27
Section 4.15. Opinion of Financial Advisor................................. 27
Section 4.16. Taxes........................................................ 27
Section 4.17. Tax Opinions................................................. 28
Section 4.18. Employee Benefit Plans and Labor Matters..................... 28
Section 4.19. Environmental Matters........................................ 30
Section 4.20. Intellectual Property........................................ 31
Section 4.21. Contracts.................................................... 31
Section 4.22. TWE.......................................................... 32
Section 4.23. Vote Required................................................ 32
Section 4.24. Antitakeover Statutes and Rights Agreement................... 32

                                 ARTICLE 5
                 Representations and Warranties of Comcast

Section 5.1.  Corporate Existence and Power................................ 33
Section 5.2.  Corporate Authorization...................................... 34
Section 5.3.  Governmental Authorization................................... 34
Section 5.4.  Non-contravention............................................ 34
Section 5.5.  Capitalization............................................... 35
Section 5.6.  Subsidiaries................................................. 36
Section 5.7.  SEC Filings.................................................. 37
Section 5.8.  Financial Statements......................................... 37
Section 5.9.  Information Supplied......................................... 38
Section 5.10. Absence of Certain Changes................................... 38
Section 5.11. No Undisclosed Material Liabilities.......................... 38
Section 5.12. Compliance with Laws and Court Orders........................ 39
Section 5.13. Litigation................................................... 39
Section 5.14. Finders' Fees................................................ 39
Section 5.15. Opinion of Financial Advisor................................. 39
Section 5.16. Taxes........................................................ 39
Section 5.17. Tax Opinions................................................. 40
Section 5.18. Employee Benefit Plans and Labor Matters..................... 40
Section 5.19. Environmental Matters........................................ 42
Section 5.20. Intellectual Property........................................ 43
Section 5.21. Contracts.................................................... 43
Section 5.22. Vote Required................................................ 44
Section 5.23. MediaOne Securities.......................................... 44

                                 ARTICLE 6
                           Covenants of MediaOne

Section 6.1.  MediaOne Interim Operations.................................. 45
Section 6.2.  MediaOne Stockholders' Meeting; Proxy Material............... 49
Section 6.3.  No Solicitation.............................................. 50
Section 6.4.  Redemption of Preferred Stock................................ 51
Section 6.5.  Channel Launches............................................. 51

                                 ARTICLE 7
                           Covenants of Comcast

Section 7.1.  Comcast Interim Operations................................... 52
Section 7.2.  Comcast Stockholders' Meeting................................ 54
Section 7.3.  Director and Officer Liability............................... 54
Section 7.4.  Quotation of Stock........................................... 55
Section 7.5.  Comcast Board of Directors................................... 55
Section 7.6.  Employee Matters............................................. 56

                                 ARTICLE 8
                     Covenants of Comcast and MediaOne

Section 8.1.  Best Efforts................................................. 58
Section 8.2.  Proxy Statement; Registration Statement...................... 58
Section 8.3.  Public Announcements......................................... 60
Section 8.4.  Further Assurances........................................... 60
Section 8.5.  Access to Information........................................ 60
Section 8.6.  Notices of Certain Events.................................... 61
Section 8.7.  Tax-free Reorganization...................................... 61
Section 8.8.  Affiliates................................................... 62
Section 8.9.  TWE Termination Notice....................................... 62
Section 8.10. Assumption of Certain Obligations............................ 62

                                 ARTICLE 9
                         Conditions to the Merger

Section 9.1.  Conditions to the Obligations of Each Party.................. 62
Section 9.2.  Conditions to the Obligations of Comcast..................... 63
Section 9.3.  Conditions to the Obligations of MediaOne.................... 64

                                ARTICLE 10
                                Termination

Section 10.1.  Termination................................................. 65
Section 10.2.  Effect of Termination....................................... 68
Section 10.3.  Fees and Expenses........................................... 68

                                ARTICLE 11
                               Miscellaneous

Section 11.1.  Notices..................................................... 69
Section 11.2.  Survival of Representations and Warranties.................. 70
Section 11.3.  Amendments; No Waivers...................................... 70
Section 11.4.  Successors and Assigns...................................... 71
Section 11.5.  Governing Law............................................... 71
Section 11.6.  Jurisdiction................................................ 71
Section 11.7.  WAIVER OF JURY TRIAL........................................ 71
Section 11.8.  Counterparts; Effectiveness................................. 71
Section 11.9.  Entire Agreement............................................ 72
Section 11.10. Captions.................................................... 72
Section 11.11. Severability................................................ 72
Section 11.12. Specific Performance........................................ 72
Section 11.13. Schedules................................................... 72


                            EXHIBITS AND SCHEDULES

Exhibit A  -- Form of Voting Agreement

Exhibit B  -- Form of MediaOne Rule 145 Affiliate Letter

MediaOne Disclosure Schedule

Comcast Disclosure Schedule


                       AGREEMENT AND PLAN OF MERGER

               AGREEMENT AND PLAN OF MERGER dated as of March 22, 1999 between
MediaOne Group, Inc., a Delaware corporation ("MediaOne"), and Comcast
Corporation, a Pennsylvania corporation ("Comcast").

               WHEREAS, the respective Boards of Directors of Comcast and
MediaOne have approved this Agreement, and deem it advisable and in the best
interests of their respective stockholders to consummate the merger of
MediaOne with and into Comcast on the terms and conditions set forth herein;

               WHEREAS, as a condition and inducement to MediaOne's entering
into this Agreement, concurrently with the execution and delivery of this
Agreement, MediaOne, Comcast Stockholder (as defined herein) and Brian L.
Roberts are entering into a Voting Agreement in the form attached as Exhibit
A hereto (the "Voting Agreement"), pursuant to which Comcast Stockholder has
agreed to vote its shares of Comcast Class A Common Stock (as defined herein)
and Comcast Class B Common Stock (as defined herein) (i) in favor of the
proposal to issue Comcast Common Stock (as defined herein) in the Merger (as
defined herein) and, if necessary, to amend the Comcast articles of
incorporation, as contemplated by Section 2.3 hereof and (ii) in favor of the
election of the New Directors (as defined herein) to the Comcast Board of
Directors; and

               WHEREAS, it is intended that, for federal income tax purposes,
the Merger shall qualify as a reorganization within the meaning of the
provisions of Section 368(a) of the Internal Revenue Code of 1986 (the
"Code");

               NOW, THEREFORE, in consideration of the foregoing and the
respective representations, warranties, covenants and agreements set forth
below, the parties agree as follows:


                                 ARTICLE 1
                                Definitions

               Section 1.1.  Definitions.  (a) The following terms, as used
herein, have the following meanings:

               "Acquisition Proposal" means any offer or proposal for, or any
indication of interest in (i) a merger, consolidation, share exchange, business
combination, reorganization, recapitalization or other similar transaction
involving MediaOne or any MediaOne Significant Subsidiary or (ii) the
acquisition, directly or indirectly, of (A) an equity interest representing
greater than 25% of the voting securities of MediaOne or any MediaOne
Significant Subsidiary or (B) assets, securities or ownership interests
representing an amount equal to or greater than 25% of the consolidated assets
or earning power of the MediaOne Group, other than the transactions
contemplated by this Agreement or permitted pursuant to Section 6.1 hereof.

               "Affiliate" means, with respect to any Person, any other Person
directly or indirectly controlling, controlled by, or under common control with
such Person.

               "Benefit Arrangement" means, with respect to any Person, any
employment, severance or similar contract or arrangement (whether or not
written) providing for compensation, bonus, profit-sharing, stock option, or
other stock-related rights or other forms of incentive or deferred
compensation, vacation benefits, insurance coverage (including any
self-insured arrangements), health or medical benefits, disability benefits,
workers' compensation, supplemental unemployment benefits,  severance benefits
and post-employment or retirement benefits (including compensation, pension,
health, medical or life insurance or other benefits) that (i) is not an
Employee Plan, (ii) is entered into, maintained, administered or contributed
to, as the case may be, by such Person or any of its Affiliates and (iii)
covers any employee or former employee of such Person or any of its
Subsidiaries employed in the United States.  "MediaOne Benefit Arrangements"
means the Benefit Arrangements of MediaOne or the MediaOne Subsidiaries and
"Comcast Benefit Arrangements" means the Benefit Arrangements of Comcast or
the Comcast Subsidiaries.

               "Business Day" means a day other than a Saturday, Sunday or
other day on which commercial banks in New York City are authorized or required
by law to close.

               "Common Stock Ratio" means (i) if the Effective Time occurs on
or before the Dividend Record Date, 1.10 and (ii) if the Effective Time occurs
after the Dividend Record Date, 2.20.

               "Deferred Compensation Plan" means, with respect to any Person,
any plan, agreement or arrangement that (i) is described under Sections 4(b)(5)
or 401(a)(1) of ERISA (or similar plan covering one or more non-employee
directors of a Person), (ii) is maintained, administered or contributed to or
required to be contributed to by such Person or any of its Affiliates and (iii)
covers any current or former employee or director of such Person or any of its
Subsidiaries.  "MediaOne Deferred Compensation Plan" means a Deferred
Compensation Plan of MediaOne or any MediaOne Affiliate for the benefit of any
current or former employee or director of MediaOne or any MediaOne Subsidiary
and "Comcast Deferred Compensation Plan" means a Deferred Compensation Plan of
Comcast or any Comcast Affiliate for the benefit of any current or former
employee or director of Comcast or any Comcast Subsidiary.

               "Delaware Law" means the General Corporation Law of the State of
Delaware.

               "Dividend Record Date" means April 20, 1999; provided that (i)
if the April 20 Dividend is paid to shareholders of record on a different
date, the Dividend Record Date will be the revised record date and (ii) if the
April 20 Dividend is not paid, the Common Stock Ratio will be calculated on the
assumption that the Effective Time occurred before the Dividend Record Date.

               "Employee Plan" means, with respect to any Person, any "employee
benefit plan", as defined in Section 3(3) of ERISA, that (i) is subject to any
provision of ERISA, (ii) is maintained, administered or contributed to by such
Person or any of its Affiliates and (iii) covers any employee or former
employee of such Person or any of its Subsidiaries.  "MediaOne Employee Plan"
means an Employee Plan of MediaOne or any of the MediaOne Subsidiaries and
"Comcast Employee Plan" means an Employee Plan of Comcast or any of the
Comcast Subsidiaries.

               "Environmental Laws" means any federal, state, local or foreign
law (including, without limitation, common law), treaty, judicial decision,
regulation, rule, judgment, order, decree, injunction, permit or governmental
restriction or requirement or any agreement with any Governmental Authority
or other third party, relating to human health and safety, the environment or
to pollutants, contaminants, wastes or chemicals or any toxic, radioactive,
ignitable, corrosive, reactive or otherwise hazardous substances, wastes or
materials.

               "Environmental Permits" means, with respect to any Person, all
permits, licenses, franchises, certificates, approvals and other similar
authorizations of any Governmental Authority relating to or required by
Environmental Laws and affecting, or relating in any way to, the business of
such Person or any of its Subsidiaries as currently conducted.

               "ERISA" means the Employee Retirement Income Security Act of
1974.

               "ERISA Affiliate" of any entity means any other entity that,
together with such entity, would be treated as a single employer under Section
414 of the Code.

               "FCC" means the Federal Communications Commission.

               "Franchise" means a written "franchise" within the meaning of
Section 602(8) of the Communications Act.

               "Franchising Authority" means "franchising authority" within the
meaning of Section 602(9) of the Communications Act.

               "Comcast Balance Sheet" means the Consolidated Balance Sheet of
Comcast and its consolidated subsidiaries as of December 31, 1998 and the
footnotes thereto, as set forth in the Comcast 10-K.

               "Comcast Balance Sheet Date" means December 31, 1998.

               "Comcast Common Stock" means the Class A Special Common Stock,
par value $1.00 per share, of Comcast.

               "Comcast Franchises" means Franchises for the Comcast Systems.

               "Comcast Group" means Comcast and the Comcast Subsidiaries.

               "Comcast Material Adverse Effect" means a material adverse
effect on the financial condition, assets or results of operations of Comcast
and the Comcast Subsidiaries, taken as a whole, excluding any such effect
resulting from or arising in connection with (i) this Agreement, the
transactions contemplated hereby or the announcement thereof, (ii) changes or
conditions generally affecting the industries in which Comcast and the Comcast
Subsidiaries operate or (iii) changes in general economic, regulatory or
political conditions.

               "Comcast Significant Subsidiary" means any Comcast Subsidiary
that would constitute a "significant subsidiary" within the meaning of Rule
1-02 of Regulation S-X of the SEC as of December 31, 1998; provided that for
purposes hereof, the phrase "earnings before interest, taxes, depreciation and
amortization" will be substituted for the phrase "income from continuing
operations before income taxes, extraordinary items and cumulative effect of a
change in accounting principle" in Rule 1-02(w)(3).

               "Comcast Stockholder" means Sural Corporation, a Delaware
corporation.

               "Comcast Subsidiary" means any entity of which securities or
other ownership interests having ordinary voting power to elect a majority of
the board of directors or other persons performing similar functions are at any
time, directly or indirectly, owned by Comcast.

               "Comcast 10-K" means Comcast's annual report on Form 10-K for
the fiscal year ended December 31, 1998.

               "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements Act
of 1976.

               "International Plan" means, with respect to any Person, any
employment, severance or similar contract or arrangement (whether or not
written) or any plan, policy, fund, program or arrangement or contract
providing for severance, insurance coverage (including any self-insured
arrangements), workers' compensation, disability benefits, supplemental
unemployment benefits, vacation benefits, pension or retirement benefits or for
deferred compensation, profit-sharing, bonuses, stock options, stock
appreciation rights or other forms of incentive compensation or post-retirement
insurance, compensation or benefits that (i) is not an Employee Plan or a
Benefit Arrangement, (ii) is entered into, maintained, administered or
contributed to by such Person or any of its Affiliates and (iii) covers any
employee or former employee of such Person or any of its Subsidiaries.
"MediaOne International Plan" means an International Plan of MediaOne or any
of the MediaOne Subsidiaries and "Comcast International Plan" means an
International Plan of Comcast or any of the Comcast Subsidiaries.

               "knowledge" means, with respect to any fact, the conscious
awareness of such fact by an executive officer (as defined under the 1933 Act)
of the relevant Person.

               "Lien" means, with respect to any property or asset, any
mortgage, lien, pledge, charge, security interest, encumbrance or other
adverse claim of any kind in respect of such property or asset.  For purposes
of this Agreement, a Person shall be deemed to own subject to a Lien any
property or asset that it has acquired or holds subject to the interest of a
vendor or lessor under any conditional sale agreement, capital lease or other
title retention agreement relating to such property or asset.

               "Multiemployer Plan" means each Employee Plan that is a
multiemployer plan, as defined in Section 3(37) of ERISA.

               "Nasdaq" means The Nasdaq National Market.

               "NYSE" means The New York Stock Exchange, Inc.

               "1933 Act" means the Securities Act of 1933.

               "1934 Act" means the Securities Exchange Act of 1934.

               "MediaOne Balance Sheet" means the Consolidated Balance Sheets
of  MediaOne and its consolidated subsidiaries as of December 31, 1998 and the
footnotes thereto set forth in the MediaOne 10-K.

               "MediaOne Balance Sheet Date" means December 31, 1998.

               "MediaOne Common Stock" means Common Stock, par value $0.01 per
share, of MediaOne.

               "MediaOne Franchises" means Franchises for the MediaOne Systems.

               "MediaOne Group" means MediaOne and the MediaOne Subsidiaries.

               "MediaOne Material Adverse Effect" means a material adverse
effect on financial condition, assets or results of operations of the MediaOne
Group taken as a whole, excluding any such effect resulting from or arising in
connection with (A) this Agreement, the transactions contemplated hereby or
the announcement thereof, (B) changes or conditions generally affecting the
industries in which MediaOne, the MediaOne Subsidiaries, TWE and the TWE
Subsidiaries, operate or (C) changes in general economic, regulatory or
political conditions.

               "MediaOne Rights Agreements" means the Amended and Restated
Rights Agreement (the "MediaOne 1995 Rights Agreement") dated as of October
31, 1995 between MediaOne and State Street Bank and Trust Company, as Rights
Agent, and the Rights Agreement (the "MediaOne 1999 Rights Agreement") dated
as of April 6, 1999 between MediaOne and State Street Bank and Trust Company,
as Rights Agent.

               "MediaOne Significant Subsidiary" means any MediaOne Subsidiary
that would constitute a "significant subsidiary" within the meaning of Rule
1-02 of Regulation S-X of the SEC as of December 31, 1998; provided that for
purposes hereof, the phrase "earnings before interest, taxes, depreciation and
amortization" will be substituted for the phrase "income from continuing
operations before income taxes, extraordinary items and cumulative effect of a
change in accounting principle" in Rule 1-02(w)(3).

               "MediaOne Social Contract" means the agreement dated August 3,
1995 between the FCC and Red, and the related FCC authorization dated July 3,
1997.

               "MediaOne Subsidiary" means any entity of which securities or
other ownership interests having ordinary voting power to elect a majority of
the board of directors or other persons performing similar functions are at any
time, directly or indirectly, owned by MediaOne.  For the avoidance of doubt,
(i) neither TWE nor Telewest Communications plc will be treated as MediaOne
Subsidiaries and (ii) Mercury Personal Communications will be treated as a
MediaOne Subsidiary for so long as MediaOne owns, directly or indirectly, not
less than a 50% interest therein.

               "MediaOne Systems" means the Systems owned and operated by
MediaOne or any MediaOne Subsidiary in the United States.

               "MediaOne 10-K" means MediaOne's annual report on Form 10-K for
the fiscal year ended December 31, 1998, in draft form dated March 20, 1999
as provided to Comcast prior to the date hereof.

               "PBGC" means the Pension Benefit Guaranty Corporation.

               "Pennsylvania Law" means the Business Corporation Law of 1988 of
the Commonwealth of Pennsylvania.

               "Pension Plan" means, with respect to any Person, any plan
(other than a Multiemployer Plan) that is subject to Title IV of ERISA and is
maintained, administered or contributed to or required to be contributed to by
such Person or any of its ERISA Affiliates.  "MediaOne Pension Plan" means a
Pension Plan of MediaOne or any of its ERISA Affiliates and "Comcast Pension
Plan" means a Pension Plan of Comcast or any of its ERISA Affiliates.

               "Person" means an individual, corporation, partnership, limited
liability company, association, trust or other entity or organization,
including a government or political subdivision or an agency or
instrumentality thereof.

               "SEC" means the Securities and Exchange Commission.

               "Subsidiary" means, with respect to any Person, any entity of
which securities or other ownership interests having ordinary voting power to
elect a majority of the board of directors or other persons performing similar
functions are at any time directly or indirectly owned by such Person.

               "Superior Proposal" means any bona fide, unsolicited written
Acquisition Proposal that the Board of Directors of MediaOne determines in
good faith by a majority vote, on the basis of the advice of a financial
advisor of nationally recognized reputation, and taking into account all the
terms and conditions of the Acquisition Proposal, is more favorable to
MediaOne's stockholders than the Merger and for which financing, to the extent
required, is then fully committed or reasonably determined to be available by
the Board of Directors of MediaOne.

               "System" means a "cable television system" within the meaning of
Section 602(7) of the Communications Act.

               "TW" means Time Warner Inc., a Delaware corporation.

               "TWE" means Time Warner Entertainment Company, L.P., a Delaware
limited partnership.

               "TWE Agreements" means the TWE Partnership Agreement, together
with any related agreements between MediaOne or any MediaOne Subsidiary, on
the one hand, and TW or any Subsidiary of TW, on the other hand.

               "TWE Partnership Agreement" means the Agreement of Limited
Partnership dated as of October 29, 1991, as amended.

               "TWE Subsidiary" means any entity of which securities or other
ownership interests having ordinary voting power to elect a majority of the
board of directors or other persons performing similar functions are at any
time directly or indirectly owned by TWE.

               "U S WEST" means U S WEST, Inc. a Delaware corporation.

               Any reference in this Agreement to a statute shall be to such
statute, as amended from time to time, and to the rules and regulations
promulgated thereunder.

           (b)  Each of the following terms is defined in the Section set forth
opposite such term:

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

Adjusted Option...................................    3.4(a)
Alternative Election..............................    2.5
Alternative Merger................................    2.5
Alternative Merger Notice.........................    2.5
April 20 Dividend.................................    3.5
Benefits Maintenance Period.......................    7.6(a)
Certificates......................................    3.2(a)
Certificate of Merger.............................    2.1(b)
Code..............................................    Preamble
Comcast...........................................    Preamble
Comcast Benefit Arrangements......................    1.1(a)
Comcast Class A Common Stock......................    5.5(a)
Comcast Class B Common Stock......................    5.5(a)
Comcast Employee Plan.............................    1.1(a)
Comcast Intellectual Property.....................    5.20
Comcast International Plan........................    1.1(a)
Comcast MOG.......................................    2.5
Comcast SEC Documents.............................    5.7(a)
Comcast Securities................................    5.5(b)
Comcast Series A Preferred Stock..................    5.5(a)
Comcast Series B Preferred Stock..................    5.5(a)
Comcast Series C Preferred Stock..................    3.1(b)
Comcast Series D Preferred Stock..................    3.1(c)
Comcast Series E  Preferred Stock.................    3.1(d)
Comcast Stockholders' Approval....................    7.2
Comcast Stockholders' Meeting.....................    4.9
Comcast Subsidiary................................    5.19
Common Certificates...............................    3.2(a)
Common Stock Consideration........................    3.1(a)
Confidentiality Agreement.........................    6.3(a)
Effective Time....................................    2.1(b)
End Date..........................................    10.1(b)
Exchange Agent....................................    3.2(a)
Exchange Fund.....................................    3.2(a)
Franchise Consents................................    4.3
GAAP..............................................    4.8
Governmental Authority............................    4.3
Indemnified Losses................................    7.3(a)
Indemnified Person................................    7.3(a)
Initial Period....................................    6.3(a)
IRS...............................................    4.16
License Consents..................................    4.3
MediaOne..........................................    Preamble
MediaOne Benefit Arrangements.....................    1.1(a)
MediaOne Common Holders...........................    3.2(b)
MediaOne Employee Plan............................    1.1(a)
MediaOne Intellectual Property....................    4.20
MediaOne International Plan.......................    1.1(a)
MediaOne 1995 Rights Agreement....................    1.1(a)
MediaOne 1999 Rights Agreement....................    1.1(a)
MediaOne Rule 145 Affiliate.......................    8.8
MediaOne SEC Documents............................    4.7(a)
MediaOne Securities...............................    4.5(b)
MediaOne Series A Preferred Stock.................    4.5(a)
MediaOne Series C Preferred Stock.................    3.1(b)
MediaOne Series C Holders.........................    3.2(b)
MediaOne Series D Holders.........................    3.2(b)
MediaOne Series D Preferred Stock.................    3.1(c)
MediaOne Series E Holders.........................    3.2(b)
MediaOne Series E Preferred Stock.................    3.1(d)
MediaOne Series F Preferred Stock.................    4.5(a)
MediaOne Stockholders' Meeting....................    4.9
MediaOne Stockholders' Approval...................    4.23
MediaOne Stock Option.............................    3.4(a)
MediaOne Subsidiary...............................    4.19
Merger............................................    2.1(a)
New Directors.....................................    7.5
New Directors Committee...........................    7.5
Proxy Statement...................................    4.9
Purchase Rights...................................    8.1(a)
Registration Statement............................    4.9
Series C Certificates.............................    3.2(a)
Series D Certificates.............................    3.2(a)
Series E Certificates.............................    3.2(a)
Series C Consideration............................    3.1(b)
Series D Consideration............................    3.1(c)
Series E Consideration............................    3.1(d)
Social Contract Consent...........................    4.3
Spinoff...........................................    9.2(c)
Standstill Agreement..............................    6.3(a)
Stockholders' Meetings............................    4.9
Successor Plan....................................    7.6(b)
Surviving Corporation.............................    2.1(a)
Tax Return........................................    4.16
Taxes.............................................    4.16
Termination Fee...................................    10.3(b)
Termination Notice Election.......................    8.9
Third Party.......................................    6.3(a)
Transferred Employees.............................    7.6(a)
368 Reorganization................................    8.7(a)
U S  WEST Agreements..............................    8.10
Voting Agreement..................................    Preamble



                                   ARTICLE 2
                                  The Merger

               Section 2.1.  The Merger.  (a) At the Effective Time, MediaOne
shall be merged (the "Merger") with and into Comcast in accordance with
Delaware Law and Pennsylvania Law and upon the terms set forth in this
Agreement, whereupon the separate existence of MediaOne shall cease and
Comcast shall be the surviving corporation (the "Surviving Corporation").

               (b)  As soon as practicable (and, in any event, within 5
Business Days) after satisfaction or, to the extent permitted hereunder,
waiver of all conditions to the Merger set forth in Article 9, other than
conditions that by their nature are to be satisfied at the Effective Time
and will in fact be satisfied at the Effective Time, (i) a certificate of
merger shall be duly prepared, executed and acknowledged by MediaOne and
Comcast and thereafter delivered to the Secretary of State of Delaware for
filing pursuant to Delaware Law and (ii) articles of merger shall be duly
prepared, executed and acknowledged by MediaOne and Comcast and thereafter
delivered to the Department of State of Pennsylvania for filing pursuant to
Pennsylvania Law.  Such certificate of merger and articles of merger shall
be referred to herein as the "Certificate of Merger".  The Merger shall
become effective at such time (the "Effective Time") as the Certificate of
Merger is duly filed with such Secretary of State of Delaware and
Department of State of Pennsylvania (or at such later time as may be agreed
by MediaOne and Comcast and specified in the Certificate of Merger).

               (c)  From and after the Effective Time, the Surviving
Corporation shall possess all the rights, powers, privileges and franchises
and be subject to all of the obligations, liabilities, restrictions and
disabilities of MediaOne and Comcast, all as provided under Delaware Law
and Pennsylvania Law.

               Section 2.2.  Articles of Incorporation and Bylaws of the
Surviving Corporation.    The articles of incorporation of Comcast in effect
at the Effective Time shall be the articles of incorporation of the Surviving
Corporation.  The bylaws of Comcast in effect at the Effective Time shall be
the bylaws of the Surviving Corporation until amended in accordance with
applicable law.

               Section 2.3.  Articles of Incorporation of Comcast.   The
articles of incorporation of Comcast in effect prior to the Effective Time
shall be amended prior to the Effective Time to (i) increase the number of
shares of authorized Comcast Common Stock to 2,500,000,000, if Comcast's
stockholders do not approve the proposal to increase the number of shares of
authorized Comcast Common Stock to 2,500,000,000 at the special meeting of
Comcast's stockholders to be held on April 20, 1999, and (ii) designate the
Comcast Series C Preferred Stock, the Comcast Series D Preferred Stock and the
Comcast Series E Preferred Stock.  As so amended, such articles of
incorporation shall be the articles of incorporation of Comcast until
thereafter changed or amended as provided therein or by applicable law.

               Section 2.4.  Directors and Officers of the Surviving
Corporation.  From and after the Effective Time, until successors are duly
elected or appointed and qualified in accordance with applicable law, (i) the
directors of Comcast at the Effective Time, together with the New Directors as
specified in Section 7.5, shall be the directors of the Surviving Corporation
and (ii) the officers of Comcast at the Effective Time shall be the officers
of the Surviving Corporation.

               Section 2.5.  Alternative Transaction Structure.  (a) At any
time prior to the Effective Time, by mutual agreement not to be unreasonably
withheld, the parties may elect to restructure the transaction in the manner
contemplated by this Section 2.5.  Upon making such election (the "Alternative
Election"), the Merger contemplated by Section 2.1 shall be restructured in
the manner set forth in this Section 2.5.  In such event, all references to
the term "Merger" shall be deemed references to the transactions contemplated
by this Section 2.5; all references to the term "Surviving Corporation" shall
be deemed references to Comcast MOG, Inc., a Delaware corporation ("Comcast
MOG") and a wholly owned subsidiary of Comcast; all references to the term
"Effective Time" in this Agreement shall be deemed references to the time at
which the certificate of merger is duly filed with the Secretary of State of
the State of Delaware (or at such later time as is specified in the
certificate of merger) with respect to the Merger as restructured in the
manner contemplated by this Section 2.5; Section 2.1 shall no longer be of
any force or effect; and the provisions of this Section 2.5 shall govern the
terms of the Merger.  The Merger, restructured as contemplated by this Section
2.5 is sometimes referred to as the "Alternative Merger".   Comcast MOG shall
become a party to this Agreement as a constituent corporation of the
Alternative Merger prior to the MediaOne Stockholders' Meeting.  At the
Effective Time of the Alternative Merger, MediaOne shall be merged with and
into Comcast MOG in accordance with Delaware Law and upon the terms set forth
in this Agreement, whereupon the separate existence of MediaOne shall cease.
If the Alternative Merger Notice is given, the representations, warranties and
other provisions of this Agreement shall be appropriately amended to account
for the change while otherwise effecting the intent of the parties as
expressed in this Agreement.  For the avoidance of doubt, (i) the Alternative
Merger shall not affect the provisions of Article 3 hereof, including the
Common Stock Consideration, Series C Consideration, Series D Consideration or
Series E Consideration, (ii) all obligations of Comcast set forth herein shall
not be affected or limited by the Alternative Merger and (iii) Comcast shall
also be responsible for the obligations of the Surviving Corporation under
Section 7.3 hereof.


                                   ARTICLE 3
                           Conversion of Securities

               Section 3.1.  Conversion of Capital Stock.  At the Effective
Time,

               (a)  Except as otherwise provided in Section 3.1(e) and
Section 3.6, each share of MediaOne Common Stock outstanding immediately
prior to the Effective Time shall be converted into the right to receive a
number of shares of Comcast Common Stock equal to the Common Stock Ratio
(together with the cash in lieu of fractional shares of Comcast Common
Stock as specified below, the "Common Stock Consideration")  (and the
associated preferred stock purchase rights issued pursuant to the MediaOne
Rights Agreements shall be terminated immediately prior thereto);

               (b)  Except as otherwise provided in Section 3.1(e) or Section
3.3, each share of Series C Cumulative Redeemable Preferred Stock, par
value $1.00 per share, of MediaOne (the "MediaOne Series C Preferred
Stock"), outstanding immediately prior to the Effective Time shall be
converted into the right to receive one-tenth of a share of the
corresponding series (the "Comcast Series C Preferred Stock") of Comcast
Preferred Stock (the "Series C Consideration") that shall have terms that
are identical to those of the MediaOne Series C Preferred Stock had there
been a 1 for 10 reverse split of each share of Comcast Series C Preferred
Stock; provided that (A) the Comcast Series C Preferred Stock shall rank on
a parity with the Comcast Series A Preferred Stock and the Comcast Series B
Preferred Stock with respect to the payment of dividends and the
distribution of assets upon liquidation, dissolution or winding up, (B) as
a result of the Merger, the issuer thereof shall be Comcast rather than
MediaOne and (C)  Comcast's obligations to pay full quarterly dividends in
respect of shares of Comcast Series C Preferred Stock (from the date of the
last dividend paid on the MediaOne Series C Preferred Stock) shall commence
on the first dividend payment date that occurs following the Effective
Time;

               (c)  Except as otherwise provided in Section 3.1(e) and
Section 3.6, each share of Series D Convertible Preferred Stock, par value
$1.00 per share, of MediaOne (the "MediaOne Series D Preferred Stock")
outstanding immediately prior to the Effective Time shall be converted into
the right to receive one-tenth of a share of the corresponding series (the
"Comcast Series D Preferred Stock") of Comcast Preferred Stock (together
with the cash in lieu of fractional shares of Comcast Series D Preferred
Stock, the "Series D Consideration") that shall have terms that are
identical to those of the MediaOne Series D Preferred Stock had there been
a 1 for 10 reverse split of each share of Comcast Series D Preferred Stock;
provided that (A) the Comcast Series D Preferred Stock shall rank on a
parity with the Comcast Series A Preferred Stock and the Comcast Series B
Preferred Stock with respect to the payment of dividends and the
distribution of assets upon liquidation, dissolution or winding up, (B) as
a result of the Merger, the issuer thereof shall be Comcast rather than
MediaOne, (C)  Comcast's obligations to pay full quarterly dividends in
respect of shares of Comcast Series D Preferred Stock (from the date of the
last dividend paid on the MediaOne Series D Preferred Stock) shall commence
on the first dividend payment date that occurs following the Effective Time
and (D) the Comcast Series D Preferred Stock shall initially be convertible
into a number of shares of Comcast Common Stock equal to (x) the
"Conversion Rate" of the MediaOne Series D Preferred Stock in effect
immediately prior to the Effective Time multiplied by (y) the Common Stock
Ratio;

               (d)  Except as otherwise provided in Section 3.1(e) or Section
3.3, each share of Series E Convertible Preferred Stock, par value $1.00
per share, of MediaOne (the "MediaOne Series E Preferred Stock")
outstanding immediately prior to the Effective Time shall be converted into
the right to receive one-tenth of a share of the corresponding series (the
"Comcast Series E Preferred Stock") of Comcast Preferred Stock (the "Series
E Consideration") that shall have terms that are identical to those of the
MediaOne Series E Preferred Stock had there been a 1 for 10 reverse split
of each share of Comcast Series E Preferred Stock; provided that (A) the
Comcast Series E Preferred Stock shall rank on a parity with the Comcast
Series A Preferred Stock and the Comcast Series B Preferred Stock with
respect to the payment of dividends and the distribution of assets upon
liquidation, dissolution or winding up, (B) as a result of the Merger, the
issuer thereof shall be Comcast rather than MediaOne, (C)  Comcast's
obligations to pay full quarterly dividends in respect of shares of Comcast
Series E Preferred Stock (from the date of the last dividend paid on the
MediaOne Series E Preferred Stock) shall commence on the first dividend
payment date that occurs following the Effective Time and (D) the
conversion rate for the MediaOne Series E Preferred Stock shall be fixed as
set forth in the Certificate of Designations relating thereto;

               (e)  Each share of MediaOne Common Stock, MediaOne Series C
Preferred Stock, MediaOne Series D Preferred Stock or MediaOne Series E
Preferred Stock held by MediaOne as treasury stock or owned by Comcast
immediately prior to the Effective Time shall be canceled, and no payment
shall be made with respect thereto; and

               (f)  Each share of capital stock of Comcast outstanding
immediately prior to the Effective Time shall remain outstanding.

               Section 3.2.  Surrender and Payment.  (a) Prior to the
Effective Time, Comcast shall appoint an agent (the "Exchange Agent") for the
purpose of (i) exchanging certificates representing shares of MediaOne Common
Stock (the "Common Certificates") for the Common Stock Consideration, (ii)
exchanging certificates representing shares of MediaOne Series C Preferred
Stock (the "Series C Certificates") for the Series C Consideration, (iii)
exchanging certificates representing shares of MediaOne Series D Preferred
Stock (the "Series D Certificates") for the Series D Consideration and (iv)
exchanging certificates representing shares of MediaOne Series E Preferred
Stock (the "Series E Certificates", and together with the Common Certificates,
the Series C Certificates and the Series D Certificates, the "Certificates")
for the Series E Consideration.  At the Effective Time, Comcast will make
available to the Exchange Agent, as needed, (i) the Common Stock Consideration
to be paid in respect of shares of MediaOne Common Stock, (ii) the Series C
Consideration to be paid in respect of shares of MediaOne Series C Preferred
Stock, (iii) the Series D Consideration to be paid in respect of shares of
MediaOne Series D Preferred Stock,  (iv) the Series E Consideration to be paid
in respect of shares of MediaOne Series E Preferred Stock and (v) cash in an
amount required to be paid pursuant to Section 3.2(f).  The Common Stock
Consideration, Series C Consideration, Series D Consideration, Series E
Consideration and cash referred to in items (i) through (v) are referred to
herein as the "Exchange Fund".  Promptly after the Effective Time, Comcast
will send, or will cause the Exchange Agent to send, to each holder of shares
of MediaOne Common Stock, MediaOne Series C Preferred Stock, MediaOne Series D
Preferred Stock or MediaOne Series E Preferred Stock at the Effective Time, a
letter of transmittal and instructions (which shall specify that the delivery
shall be effected, and risk of loss and title shall pass, only upon proper
delivery of the Certificates to the Exchange Agent) for use in such exchange.

               (b)  Upon surrender to the Exchange Agent of its Certificate,
together with a properly completed letter of transmittal, (i)  each holder of
shares of MediaOne Common Stock (the "MediaOne Common Holders") will be
entitled to receive the Common Stock Consideration in respect of the shares of
MediaOne Common Stock represented by its Certificate; (ii)  each holder of
shares of MediaOne Series C Preferred Stock (the "MediaOne Series C Holders")
will be entitled to receive the Series C Consideration in respect of the
shares of MediaOne Series C Preferred Stock represented by its Certificate;
(iii) each holder of shares of MediaOne Series D Preferred Stock (the
"MediaOne Series D Holders") will be entitled to receive the Series D
Consideration in respect of the shares of MediaOne Series D Preferred Stock
represented by its Certificate and (iv)  each holder of shares of MediaOne
Series E Preferred Stock (the "MediaOne Series E Holders") will be entitled
to receive the Series E Consideration in respect of the shares represented by
its Certificate.  In addition, each such MediaOne Common Holder, MediaOne
Series C Holder, MediaOne Series D Holder and MediaOne Series E Holder will be
entitled to receive any dividends and distributions payable pursuant to
Section 3.2(f).  Until so surrendered, each such Certificate shall represent
after the Effective Time, for all purposes, only the right to receive the
Common Stock Consideration, the Series C Consideration, the Series D
Consideration or the Series E Consideration, as the case may be.

               (c)   If any portion of the Common Stock Consideration, the
Series C Consideration, the Series D Consideration or the Series E
Consideration is to be paid to a Person other than the Person in whose name
the Certificate so surrendered is registered, it shall be a condition to
such payment that such Certificate shall be properly endorsed or otherwise
be in proper form for transfer and that the Person requesting such payment
shall pay to the Exchange Agent any transfer or other taxes required as a
result of such payment to a Person other than the registered holder of such
Certificate, or establish to the satisfaction of the Exchange Agent that
such tax has been paid or is not payable.

               (d)   After the Effective Time, there shall be no further
registration of transfers of shares of MediaOne Common Stock, MediaOne Series
C Preferred Stock, MediaOne Series D Preferred Stock or MediaOne Series E
Preferred Stock.  If, after the Effective Time, Certificates are presented to
the Surviving Corporation, they shall be canceled and exchanged for the Common
Stock Consideration, the Series C Consideration, the Series D Consideration or
the Series E Consideration provided for, and in accordance with the procedures
set forth, in this Article 3.

               (e)  Any portion of the Exchange Fund made available to the
Exchange Agent pursuant to Section 3.2(a) that remains unclaimed by the
MediaOne Common Holders, MediaOne Series C Holders, MediaOne Series D Holders
and MediaOne Series E Holders one year after the Effective Time shall be
returned to Comcast, upon demand, and any such holder who has not exchanged
its shares for the Common Stock Consideration, the Series C Consideration, the
Series D Consideration or the Series E Consideration in accordance with this
Section 3.2 prior to that time shall thereafter look only to Comcast for
payment of such consideration, and any dividends and distributions in respect
of such shares without any interest thereon.  Notwithstanding the foregoing,
Comcast shall not be liable to any MediaOne Common Holder, MediaOne Series C
Holder, MediaOne Series D Holder or MediaOne Series E Holder for any amounts
paid to a public official pursuant to applicable abandoned property, escheat
or similar laws.  Any amounts remaining unclaimed by the MediaOne Common
Holders, MediaOne Series C Holders, MediaOne Series D Holders and MediaOne
Series E Holders five years after the Effective Time (or such earlier date,
immediately prior to such time when the amounts would otherwise escheat to or
become property of any Governmental Authority) shall become, to the extent
permitted by applicable law, the property of Comcast free and clear of any
claims or interest of any Person previously entitled thereto.

               (f)  No dividends or other distributions with respect to any
Comcast Securities constituting part of the Common Stock Consideration, the
Series C Consideration, the Series D Consideration or the Series E
Consideration and, in the case of the Common Certificates and Series D
Certificates, no cash payment in lieu of fractional shares as provided in
Section 3.6, shall be paid to the holder of any unsurrendered Certificates
until such Certificates are surrendered as provided in Section 3.2(b).
Following such surrender, there shall be paid, without interest, to the
Person in whose name such Comcast Securities have been registered, (i) at
the time of such surrender, (A) in the case of Common Certificates and
Series D Certificates, the amount of any cash payable in lieu of fractional
shares to which such Person is entitled pursuant to Section 3.6, and (B)
the amount of all dividends or other distributions with a record date after
the Effective Time previously paid or payable on the date of such
surrender, with respect to such Comcast Securities, and (ii) at the
appropriate payment date, the amount of dividends or other distributions
with a record date after the Effective Time but prior to surrender, and
with a payment date subsequent to surrender, payable with respect to such
Comcast Securities.

               (g)  Any portion of the Series C Consideration or the Series E
Consideration made available to the Exchange Agent pursuant to Section 3.2(a)
to pay for shares of MediaOne Series C Preferred Stock or MediaOne Series E
Preferred Stock for which appraisal rights have been perfected shall be
returned to Comcast upon demand.

               Section 3.3.  Dissenting Shares.    Notwithstanding Sections
3.1(b) and 3.1(d), shares of MediaOne Series C Preferred Stock and MediaOne
Series E Preferred Stock outstanding immediately prior to the Effective Time
and held by a holder who has not voted in favor of the Merger and has demanded
appraisal for such shares in accordance with Delaware Law shall not be
converted into a right to receive the Series C Consideration or the Series E
Consideration, as the case may be, unless such holder fails to perfect,
withdraws or otherwise loses its right to appraisal.  If, after the Effective
Time, such holder fails to perfect, withdraws or loses its right to appraisal,
such shares shall be treated as if they had been converted as of the Effective
Time into a right to receive the Series C Consideration or the Series E
Consideration, as the case may be.  MediaOne shall give Comcast prompt notice
of any demands received by MediaOne for appraisal of shares, and Comcast shall
have the right to participate in all negotiations and proceedings with respect
to such demands.  Except with the prior written consent of Comcast, MediaOne
shall not make any payment with respect to, or settle or offer to settle, any
such demands.

               Section 3.4.  Stock Options.  (a) Each outstanding option to
purchase shares of MediaOne Common Stock granted under any stock option or
compensation plans or arrangements (a "MediaOne Stock Option"), whether or not
exercisable or vested, shall be adjusted as necessary to provide that, at the
Effective Time, each MediaOne Stock Option outstanding immediately prior to
the Effective Time shall be deemed to constitute an option to acquire, on the
same terms and conditions as were applicable under such MediaOne Stock Option
(including terms regarding vesting), the same number of shares of Comcast
Common Stock as the holder of such MediaOne Stock Option would have been
entitled to receive pursuant to the Merger had such holder exercised such
MediaOne Stock Option in full immediately prior to the Effective Time, at a
price per share of Comcast Common Stock equal to (A) the aggregate exercise
price for the shares of MediaOne Common Stock otherwise purchasable pursuant
to such MediaOne Stock Option divided by (B) the aggregate number of shares of
Comcast Common Stock deemed purchasable pursuant to such MediaOne Stock Option
(each, as so adjusted, an "Adjusted Option"); provided that any fractional
share of Comcast Common Stock resulting from an aggregation of all the shares
of a holder subject to MediaOne Stock Option shall be rounded up to the
nearest whole share, and provided further that, for any MediaOne Stock Option
to which Section 421 of the Code applies by reason of its qualification under
any of Sections 422 through 424 of the Code, the option price, the number of
shares purchasable pursuant to such option and the terms and conditions of
exercise of such option shall be determined in order to comply with Section
424 of the Code.

               (b)  Comcast shall take such actions as are necessary for the
assumption of the MediaOne Stock Options pursuant to this Section 3.4 and any
obligations to issue MediaOne Common Stock under the existing terms of any
other plans, agreements or arrangements of MediaOne covering any current or
former employee or director of MediaOne or any MediaOne Subsidiary, including
the reservation, issuance and listing of Comcast Common Stock as is necessary
to effectuate the transactions contemplated by this Section 3.4.  Comcast
shall prepare and file with the SEC a registration statement on Form S-8 (or
any other appropriate form) or a post-effective amendment to a registration
statement previously filed under the 1933 Act, with respect to the shares of
Comcast Common Stock subject to the Adjusted Options and, where applicable,
shall use its reasonable best efforts to have such registration statement
declared effective as soon as practicable following the Effective Time and to
maintain the effectiveness of such registration statement covering such
Adjusted Options (and to maintain the current status of the prospectus
contained therein) for so long as such Adjusted Options remain outstanding.
With respect to those individuals, if any, who, subsequent to the Effective
Time, will be subject to the reporting requirements under Section 16(a) of the
1934 Act, where applicable, Comcast shall use all reasonable efforts to
administer any Adjusted Options issued pursuant to this Section 3.4 in a
manner that complies with Rule 16b-3 promulgated under the 1934 Act to the
extent that the MediaOne Stock Option in respect of which such Adjusted Option
has been issued complied with such rule prior to the Merger.

               Section 3.5.  Adjustments.  On March 3, 1999, the Board of
Directors of Comcast declared a conditional dividend of one share of Comcast
Common Stock for each share of Comcast Common Stock, Comcast Class A Common
Stock and Comcast Class B Common Stock held of record at the close of business
on April 20, 1999 (the "April 20 Dividend").  The Common Stock Consideration
has been calculated in a manner that accounts for the April 20 Dividend,
regardless of whether (i) it is paid to shareholders of record on April 20,
1999, (ii) the record date therefor is changed and it is paid to shareholders
of record on a different date or (iii) it is not paid at all.  If, during the
period between the date of this Agreement and the Effective Time, any other
change in the outstanding shares of capital stock of MediaOne or Comcast shall
occur, including by reason of any reclassification, recapitalization, stock
split or combination, exchange or readjustment of shares, or any stock
dividend thereon with a record date during such period, the Common Stock
Consideration and any other amounts payable pursuant to this Agreement shall
be appropriately adjusted.

               Section 3.6.  Fractional Shares.  No fractional shares of
Comcast Common Stock or Comcast Series D Preferred Stock shall be issued in the
Merger.  All fractional shares of Comcast Common Stock that a holder of shares
of MediaOne Common Stock would otherwise be entitled to receive as a result of
the Merger shall be aggregated and if a fractional share results from such
aggregation, such holder shall be entitled to receive, in lieu thereof, an
amount in cash without interest determined by multiplying the closing sale
price of a share of Comcast Common Stock on Nasdaq on the trading day
immediately preceding the Effective Time by the fraction of a share of Comcast
Common Stock to which such holder would otherwise have been entitled.  All
fractional shares of Comcast Series D Preferred Stock that a holder of shares
of MediaOne Series D Preferred Stock would otherwise be entitled to receive as
a result of the Merger shall be aggregated and if a fractional share results
from such aggregation, such holder shall be entitled to receive, in lieu
thereof, an amount in cash without interest determined by multiplying (i) ten
times the average closing sale price of a share of MediaOne Series D Preferred
Stock on the NYSE for the twenty trading days immediately preceding the
Effective Time and (ii) the fraction of a share of Comcast Series D Preferred
Stock to which such holder would otherwise have been entitled.

               Section 3.7.  Withholding Rights.  Comcast shall be entitled to
deduct and withhold from the consideration otherwise payable to any Person
pursuant to this Article 3 such amounts as it is required to deduct and
withhold with respect to the making of such payment under any provision of
federal, state, local or foreign tax law.  If Comcast so withholds amounts,
such amounts shall be treated for all purposes of this Agreement as having
been paid to the MediaOne Common Holder, the MediaOne Series C Holder, the
MediaOne Series D Holder or the MediaOne Series E Holder, as the case may be,
in respect of which Comcast made such deduction and withholding.

               Section 3.8.  Lost Certificates.  If any Certificate is 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 executing
an indemnity reasonably satisfactory to the Surviving Corporation (and, if
required by the Surviving Corporation in the case of a Certificate
representing more than 1,000 shares (100 shares in the case of the MediaOne
Series D Preferred Stock), the posting by such Person of a bond, in such
reasonable amount as the Surviving Corporation may direct, as indemnity)
against any claim that may be made against it with respect to such
Certificate, the Exchange Agent will issue, in exchange for such lost, stolen
or destroyed Certificate, (i)  the Common Stock Consideration to be paid in
respect of the shares of MediaOne Common Stock represented by such
Certificate, (ii)  the Series C Consideration to be paid in respect of the
shares of MediaOne Series C Preferred Stock represented by such Certificate,
(iii)  the Series D Consideration to be paid in respect of the shares of
MediaOne Series D Preferred Stock represented by such Certificate, or (iv)
the Series E Consideration to be paid in respect of the shares of MediaOne
Series E Preferred Stock represented by such Certificate, as the case may be.
In addition, such Person will be entitled to receive any amounts payable
pursuant to Section 3.2(f).


                                   ARTICLE 4
                  Representations and Warranties of MediaOne

            Except as set forth in the MediaOne Disclosure Schedule or as
disclosed in the MediaOne SEC Documents filed prior to the date hereof,
MediaOne represents and warrants to Comcast as follows:

               Section 4.1.  Corporate Existence and Power.  MediaOne is a
corporation duly incorporated, validly existing and in good standing under the
laws of the State of Delaware and has all corporate powers required to carry
on its business as now conducted.  MediaOne is duly qualified to do business
as a foreign corporation and is in good standing in each jurisdiction where
such qualification is necessary, except for those jurisdictions where failure
to be so qualified, individually or in the aggregate, has not had and would
not be reasonably expected to have a MediaOne Material Adverse Effect.
MediaOne has heretofore delivered or made available to Comcast true and
complete copies of the certificate of incorporation and bylaws of MediaOne as
currently in effect.

               Section 4.2.  Corporate Authorization.  (a) The execution,
delivery and performance by MediaOne of this Agreement and the consummation by
MediaOne of the transactions contemplated hereby are within MediaOne's
corporate powers and, except for the required approval of MediaOne's
stockholders of this Agreement, have been duly authorized by all necessary
corporate action on the part of MediaOne.  This Agreement constitutes a valid
and binding agreement of MediaOne, enforceable against MediaOne in accordance
with its terms, except (i) as the same may be limited by applicable
bankruptcy, insolvency, moratorium or similar laws of general application
relating to or affecting creditors' rights, and (ii) for the limitations
imposed by general principles of equity.

               (b)  At a meeting duly called and held, MediaOne's Board of
Directors has unanimously: (i) determined that this Agreement and the
transactions contemplated hereby are advisable and fair to and in the best
interests of MediaOne's stockholders; (ii) approved and adopted this Agreement
and the transactions contemplated hereby; and (iii) resolved (subject to
Section 6.2(b)) to recommend approval and adoption of this Agreement by its
stockholders.

               Section 4.3.  Governmental Authorization.  The execution,
delivery and performance by MediaOne of this Agreement and the consummation by
MediaOne of the transactions contemplated hereby require no action by or in
respect of, or filing with, any governmental body, agency, official or
authority, domestic or foreign (a "Governmental Authority"), other than: (i)
notices to, or consents or waivers from, the relevant Franchising Authorities
in respect of the MediaOne Franchises (the "Franchise Consents"), and the FCC
in connection with a change of control and/or assignment of the holder of the
FCC licenses of MediaOne and the MediaOne Subsidiaries ("License Consents");
(ii) any filings as may be required with the FCC or any Governmental Authority
to obtain its consent to the assumption by Comcast of the MediaOne Social
Contract (the "Social Contract Consent"); (iii) the filing of a certificate of
merger with respect to the Merger with the Delaware Secretary of State and
appropriate documents with the relevant authorities of other states in which
MediaOne is qualified to do business; (iv) the filing of articles of merger
with respect to the Merger with the Pennsylvania Department of State; (v)
compliance with any applicable requirements of the HSR Act; (vi) compliance
with any applicable requirements of the 1933 Act, 1934 Act, and any other
applicable securities laws, whether state or foreign; and (vii) any actions or
filings the absence of which, individually or in the aggregate, would not be
reasonably expected to have a MediaOne Material Adverse Effect or materially
impair or delay the ability of MediaOne to consummate the transactions
contemplated by this Agreement.

               Section 4.4.  Non-contravention.  The execution, delivery and
performance by MediaOne of this Agreement and the consummation by MediaOne of
the transactions contemplated hereby do not and will not (i) contravene,
conflict with, or result in any violation or breach of any provision of the
certificate of incorporation or bylaws of MediaOne; (ii) assuming compliance
with the matters referred to in Section 4.3, contravene, conflict with or
result in a violation or breach of any provision of any applicable law,
statute, ordinance, rule, regulation, judgment, injunction, order, or decree;
(iii) require any consent or other action by any Person under, constitute a
default (or an event that, with or without notice or lapse of time or both,
would constitute a default) under, or cause or permit the termination,
cancellation, acceleration, triggering or other change of any right or
obligation or the loss of any benefit to which MediaOne or any MediaOne
Subsidiary is entitled under (A) any provision of any agreement or other
instrument binding upon MediaOne or any MediaOne Subsidiary or (B) any
license, franchise, permit, certificate, approval or other similar
authorization held by, or affecting, or relating in any way to, the assets or
business of, MediaOne or any MediaOne Subsidiary; or (iv) result in the
creation or imposition of any Lien on any asset of MediaOne or any MediaOne
Subsidiary, other than such exceptions in the case of clauses (ii), (iii) and
(iv) as would not be, individually or in the aggregate, reasonably expected to
have a MediaOne Material Adverse Effect or materially impair or delay the
ability of MediaOne to consummate the transactions contemplated by this
Agreement.

               Section 4.5.  Capitalization.  (a) The authorized capital stock
of MediaOne consists of 2,000,000,000 shares of MediaOne Common Stock and
200,000,000 shares of Preferred Stock, par value $1.00 per share, of which (i)
10,000,000 shares have been designated Series A Junior Participating
Cumulative Preferred Stock (the "MediaOne Series A Preferred Stock") and
reserved for issuance upon the exercise of rights distributed to holders of
MediaOne Common Stock pursuant to the MediaOne 1995 Rights Agreement, (ii)
50,000 shares have been designated MediaOne Series C Preferred Stock, (iii)
20,000,000 shares have been designated MediaOne Series D Preferred Stock, (iv)
1,000,000 shares have been designated MediaOne Series E Preferred Stock and
(v) 2,000,000 shares have been designated Series F Junior Participating
Cumulative Preferred Stock (the "MediaOne Series F Preferred Stock") and
reserved for issuance upon the exercise of rights distributed to holders of
MediaOne Common Stock pursuant to the MediaOne 1999 Rights Agreement.  As of
the close of business on March 19, 1999, there were outstanding (i)
603,883,858 shares of MediaOne Common Stock (inclusive of all shares of
restricted stock granted under any compensatory plans or arrangements), (ii)
MediaOne Stock Options to purchase an aggregate of 31,146,625 shares of
MediaOne Common Stock (of which options to purchase an aggregate of 9,907,524
shares of MediaOne Common Stock were exercisable), (iii) phantom shares or
stock units issued under any stock option, compensation or deferred
compensation plan or arrangement with respect to an aggregate of 339,703 (as
of February 26, 1999) shares of MediaOne Common Stock, (iv) no shares of
MediaOne Series A Preferred Stock, (iv) 50,000 shares of MediaOne Series C
Stock, (vi) 19,999,478 shares of MediaOne Series D Preferred Stock, (vii)
996,562 shares of MediaOne Series E Preferred Stock and (viii) no shares of
MediaOne Series F Preferred Stock. All outstanding shares of capital stock of
MediaOne have been, and all shares that may be issued pursuant to any
compensatory plan or arrangement will be, when issued in accordance with the
respective terms thereof, duly authorized, validly issued, fully paid and
nonassessable.

               (b)  Except as set forth in this Section 4.5 and for changes
since March 19, 1999 (or February 26, 1999 in the case of phantom shares or
stock units) resulting from the exercise of employee stock options
outstanding on such date (and the grant or award of employee stock options
in the ordinary course of business and the exercise thereof) and the
conversion of MediaOne Series D Preferred Stock outstanding on such date,
there are no outstanding (i) shares of capital stock or voting securities
of MediaOne, (ii) securities of MediaOne convertible into or exchangeable
for shares of capital stock or voting securities of MediaOne or (iii)
options or other rights to acquire from MediaOne, or other obligation of
MediaOne to issue any capital stock, voting securities or securities
convertible into or exchangeable for capital stock or voting securities of
MediaOne.  There are no outstanding obligations of MediaOne or any MediaOne
Subsidiary to repurchase, redeem or otherwise acquire any of the securities
referred to in clauses (i), (ii) and (iii) above (collectively, the
"MediaOne Securities").

               Section 4.6.  Subsidiaries.  (a) Each MediaOne Subsidiary is a
corporation or other legal entity duly organized, validly existing and in good
standing under the laws of its jurisdiction of organization and has all
corporate, partnership or other similar powers required to carry on its
business as now conducted, other than such exceptions as, individually or in
the aggregate, have not had and would not be reasonably expected to have a
MediaOne Material Adverse Effect.  Each MediaOne Subsidiary is duly qualified
to do business as a foreign corporation or other foreign legal entity and is
in good standing in each jurisdiction where such qualification is necessary,
with such exceptions, individually or in the aggregate, as have not had and
would not be reasonably expected to have a MediaOne Material Adverse Effect.
The MediaOne Disclosure Schedule sets forth a list of all MediaOne Significant
Subsidiaries and their respective jurisdictions of organization and identifies
MediaOne's (direct or indirect) percentage ownership interest therein.

               (b)  All of the outstanding capital stock of, or other voting
securities or ownership interests in, each MediaOne Significant Subsidiary, is
owned by MediaOne, directly or indirectly, free and clear of any Lien and free
of any other limitation or restriction (including any restriction on the right
to vote, sell or otherwise dispose of such capital stock or other voting
securities or ownership interests).  There are no outstanding (i) securities
of MediaOne or any MediaOne Subsidiary convertible into or exchangeable for
shares of capital stock or other voting securities or ownership interests in
any MediaOne Significant Subsidiary or (ii) options or other rights to acquire
from MediaOne or any MediaOne Subsidiary, or other obligation of MediaOne or
any MediaOne Subsidiary to issue any capital stock, or other voting securities
or ownership interests in, or any securities convertible into or exchangeable
for any capital stock or other voting securities or ownership interests in, any
MediaOne Significant Subsidiary.  There are no outstanding obligations of
MediaOne or any MediaOne Significant Subsidiary to repurchase, redeem or
otherwise acquire any of the items referred to in clauses (i) and (ii) above.

               Section 4.7.  SEC Filings.  (a) MediaOne has delivered or made
available to Comcast: (i) MediaOne's annual report on Form 10-K for its fiscal
year ended December 31, 1997 and the MediaOne 10-K; (ii) its proxy or
information statements relating to meetings of, or actions taken without a
meeting by, the stockholders of MediaOne held since December 31, 1997; and
(iii) all of its other reports, statements, schedules and registration
statements filed with the SEC since December 31, 1997 (the documents referred
to in this Section 4.7(a), collectively, the "MediaOne SEC Documents").

               (b)  As of its filing date, each MediaOne SEC Document complied
(or, in the case of the MediaOne 10-K, will comply) as to form in all material
respects with the applicable requirements of the 1933 Act and the 1934 Act, as
the case may be.

               (c)  As of its filing date (or in the case of the MediaOne
10-K, as of the date hereof), each MediaOne SEC Document filed pursuant to
the 1934 Act did not contain any untrue statement of a material fact or
omit to state any material fact necessary in order to make the statements
made therein, in the light of the circumstances under which they were made,
not misleading.

               (d)  Each MediaOne SEC Document that is a registration
statement, as amended or supplemented, if applicable, filed pursuant to the
1933 Act, as of the date such registration statement or amendment became
effective, did not contain any untrue statement of a material fact or omit
to state any material fact required to be stated therein or necessary to
make the statements therein not misleading.

               Section 4.8.  Financial Statements.  The audited consolidated
financial statements and unaudited consolidated interim financial statements of
MediaOne included in the MediaOne SEC Documents fairly present, in all
material respects, in conformity with generally accepted accounting principles
("GAAP") applied on a consistent basis (except as may be indicated in the
notes thereto), the consolidated financial position of MediaOne and its
consolidated Subsidiaries as of the dates thereof and their consolidated
results of operations and cash flows for the periods then ended (subject to
normal year-end adjustments in the case of any unaudited interim financial
statements).

               Section 4.9.  Information Supplied.  The information supplied by
MediaOne for inclusion or incorporation in the registration statement on Form
S-4 or any amendment or supplement thereto pursuant to which shares of Comcast
Common Stock issuable in the Merger will be registered with the SEC (the
"Registration Statement") shall not at the time the Registration Statement is
declared effective by the SEC 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.  The information supplied by MediaOne
for inclusion in the joint proxy statement/prospectus or any amendment or
supplement thereto (the "Proxy Statement") to be sent to the stockholders of
MediaOne in connection with their meeting to consider this Agreement and the
Merger (the "MediaOne Stockholders' Meeting") and to the stockholders of
Comcast in connection with their meeting to consider the issuance of shares of
Comcast Common Stock in the Merger and, if necessary, the amendment to the
articles of incorporation of Comcast contemplated by Section 2.3 hereof (the
"Comcast Stockholders' Meeting" and together with the MediaOne Stockholders'
Meeting, the "Stockholders' Meetings") shall not, on the date the Proxy
Statement is first mailed to the stockholders of MediaOne and Comcast or at
the time of either of the Stockholders' Meetings or at the Effective Time,
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.

               Section 4.10.  Absence of Certain Changes.  Since the MediaOne
Balance Sheet Date, the business of MediaOne and the MediaOne Subsidiaries has
been conducted in the ordinary course consistent with past practices and there
has not been:

                 (a)  any event, occurrence or development of a state of
circumstances or facts which, individually or in the aggregate, has had or
would be reasonably expected to have a MediaOne Material Adverse Effect; or

                 (b)  any action, event, occurrence or transaction that would
have been prohibited by clause (a), (b), (c), (d), (f), (i) or (q) of the
second sentence of Section 6.1 (or committed to do any of the foregoing) if
this Agreement had been in effect as of the time thereof.

               Section 4.11.  No Undisclosed Material Liabilities.  There are
no liabilities or obligations of MediaOne or any MediaOne Subsidiary of any
kind whatsoever, whether accrued, contingent, absolute, determined,
determinable or otherwise, and there is no existing condition, situation or
set of circumstances that could be reasonably expected to result in such a
liability or obligation, other than:

                 (a)  liabilities or obligations disclosed and provided for in
the MediaOne Balance Sheet or in the notes thereto or in MediaOne SEC
Documents filed prior to the date hereof or in the MediaOne 10-K;

                 (b)  liabilities or obligations incurred in the ordinary
course of business consistent with past practice since the MediaOne Balance
Sheet Date; and

                 (c)  liabilities or obligations that, individually or in the
aggregate have not had and would not be reasonably expected to have a MediaOne
Material Adverse Effect.

               Section 4.12.  Compliance with Laws and Court Orders.  MediaOne
and the MediaOne Subsidiaries hold all licenses, franchises, certificates,
consents, permits, qualifications and authorizations from all Governmental
Authorities necessary for the lawful conduct of their business, except where
the failure to hold any of the foregoing, individually or in the aggregate, has
not had and would not be reasonably expected to have a MediaOne Material
Adverse Effect. MediaOne and each of the MediaOne Subsidiaries are and have
been in compliance with, and to the knowledge of MediaOne, are not under
investigation with respect to and have not been threatened to be charged with
or given notice of any violation of, any such license, franchise, certificate,
consent, permit, qualification or authorization, applicable law, statute,
ordinance, rule, regulation, judgment, injunction, order or decree, except for
failures to comply or violations that, individually or in the aggregate, have
not had and would not be reasonably expected to have a MediaOne Material
Adverse Effect.

               Section 4.13.  Litigation.  There is no action, suit,
investigation or proceeding (or any basis therefor) pending against, or, to
the knowledge of MediaOne, threatened against or affecting, MediaOne or any
MediaOne Subsidiary or any of their respective properties before any court or
arbitrator or before or by any other Governmental Authority, that,
individually or in the aggregate, would be reasonably expected to have a
MediaOne Material Adverse Effect.

               Section 4.14.  Finders' Fees.  Except for Lehman Brothers Inc.
and Allen & Co., Incorporated, there is no investment banker, broker, finder or
other intermediary that has been retained by or is authorized to act on behalf
of MediaOne or any MediaOne Subsidiary who might be entitled to any fee or
commission from Comcast, any of the Comcast Subsidiaries, MediaOne or any of
the MediaOne Subsidiaries in connection with the transactions contemplated by
this Agreement.  A copy of Lehman Brothers Inc. engagement agreement has been
provided to Comcast.

               Section 4.15.  Opinion of Financial Advisor.  MediaOne has
received an opinion of Lehman Brothers Inc., financial advisor to MediaOne, to
the effect that, as of March 21, 1999, from a financial point of view, the
Common Stock Ratio is fair to the holders of MediaOne Common Stock.

               Section 4.16.  Taxes.  Except as set forth in the MediaOne
Balance Sheet (including the notes thereto) and except as would not be,
individually or in the aggregate, reasonably expected to have a MediaOne
Material Adverse Effect, (i) all MediaOne Tax Returns required to be filed
with any taxing authority by, or with respect to, MediaOne and the MediaOne
Subsidiaries have been filed in accordance with all applicable laws; (ii)
MediaOne and the MediaOne Subsidiaries have timely paid all Taxes shown as due
and payable on the MediaOne Tax Returns that have been so filed, and, as of
the time of filing, the MediaOne Tax Returns correctly reflected the facts
regarding the income, business, assets, operations, activities and the status
of MediaOne and the MediaOne Subsidiaries (other than Taxes which are being
contested in good faith and for which adequate reserves are reflected on the
MediaOne Balance Sheet); (iii) MediaOne and the MediaOne Subsidiaries have made
provision for all Taxes payable by MediaOne and the MediaOne Subsidiaries for
which no MediaOne Tax Return has yet been filed; (iv) the charges, accruals
and reserves for Taxes with respect to MediaOne and the MediaOne Subsidiaries
reflected on the MediaOne Balance Sheet are adequate under GAAP to cover the
Tax liabilities accruing through the date thereof; (v) there is no action,
suit, proceeding, audit or claim now proposed or pending against or with
respect to MediaOne or any MediaOne Subsidiary in respect of any Tax where
there is a reasonable possibility of an adverse determination; (vi) the
federal income Tax Returns of MediaOne and the MediaOne Subsidiaries have been
examined and settled with the Internal Revenue Service (the "IRS") (or the
applicable statutes of limitation for the assessment of federal income Taxes
for such periods have expired) for all years through 1987; and (vii) there are
no material Liens or encumbrances for Taxes on any of the assets of MediaOne
or any MediaOne Subsidiary except liens for current Taxes not yet due.  For
purposes of this Agreement, "Taxes" shall mean any and all taxes, charges,
fees, levies or other assessments, including, without limitation, all net
income, gross income, gross receipts, excise, stamp, real or personal property,
ad valorem, withholding, social security (or similar), unemployment,
occupation, use, service, service use, license, net worth, payroll, franchise,
severance, transfer, recording, employment, premium, windfall profits,
environmental (including taxes under Section 59A of the Code), customs duties,
capital stock, profits, disability, sales, registration, value added,
alternative or add-on minimum, estimated or other taxes, assessments or
charges imposed by any federal, state, local or foreign governmental entity and
any interest, penalties, or additions to tax attributable thereto.  For
purposes of this Agreement, "Tax Returns" shall mean any return, report, form
or similar statement required to be filed with respect to any Tax (including
any attached schedules), including, without limitation, any information
return, claim for refund, amended return or declaration of estimated Tax.

               Section 4.17.  Tax Opinions.  There are no facts or
circumstances relating to MediaOne or, to the knowledge of MediaOne, U S WEST,
that would prevent Weil, Gotshal & Manges LLP from delivering the opinion
referred to in Section 9.3(c) as of the date hereof.

               Section 4.18.  Employee Benefit Plans and Labor Matters.
Except as have not had and would not be reasonably expected to have,
individually or in the aggregate, a MediaOne Material Adverse Effect:

               (a)  The MediaOne Disclosure Schedule contains a true and
complete list, as of the date hereof, of all MediaOne Employee Plans and
all MediaOne Benefit Arrangements.  Copies of each MediaOne Employee Plan
and each MediaOne Benefit Arrangement (and, if applicable, related trust
agreements) and all amendments thereto and written interpretations thereof
have been made available to Comcast as of the date hereof or will have been
made available to Comcast within thirty days after the date hereof,
together with the three most recent annual reports (Form 5500 including, if
applicable, Schedule B thereto) and the most recent actuarial valuation
report prepared in connection with any MediaOne Employee Plan.

               (b)  No "accumulated funding deficiency," as defined in Section
412 of the Code, has been incurred with respect to any MediaOne Employee
Plan subject to such Section 412, whether or not waived.  No "reportable
event" within the meaning of Section 4043 of ERISA, and no event described
in Section 4062 or 4063 of ERISA has occurred in connection with any
MediaOne Employee Plan.  Neither MediaOne nor any ERISA Affiliate of
MediaOne has (i) engaged in, or is a successor or parent corporation to an
entity that has engaged in, a transaction described in Sections 4069 or
4212(c) of ERISA or (ii) incurred, or reasonably expects to incur prior to
the Effective Time (A) any liability under Title IV of ERISA arising in
connection with the termination of, or a complete or partial withdrawal
from, any plan covered or previously covered by Title IV of ERISA or (B)
any liability under Section 4971 of the Code that in either case could
become a liability of MediaOne, any MediaOne Subsidiary, Comcast or any of
their ERISA Affiliates after the Effective Time.  If a "complete
withdrawal" by MediaOne and all of its ERISA Affiliates were to occur as of
the Effective Time with respect to all Multiemployer Plans, none of
MediaOne, any MediaOne Subsidiary or any of their ERISA Affiliates would
incur any withdrawal liability under Title IV of ERISA.

               (c)  As of December 31, 1998, the fair market value of the
assets of each MediaOne Pension Plan (excluding for these purposes any
accrued but unpaid contributions) exceeded the present value of all
benefits accrued under such MediaOne Pension Plan determined on a
termination basis using the assumptions established by the PBGC as in
effect on such date.  As of December 31, 1998, the aggregate unfunded
liability of MediaOne and any MediaOne Subsidiary in respect of all
MediaOne Deferred Compensation Plans, computed using reasonable actuarial
assumptions and determined as if all benefits under such plans were vested
and payable as of such date, did not exceed $53,000,000.

               (d)  Each MediaOne Employee Plan that is intended to be
qualified under Section 401(a) of the Code is the subject of a favorable
qualification determination letter issued by the IRS and to MediaOne's
knowledge each such MediaOne Employee Plan is so qualified.

               (e)  There is no contract, plan or arrangement (written or
otherwise) covering any employee or former employee of MediaOne or any MediaOne
Subsidiary that, individually or collectively, could give rise to the payment
of any amount that would not be deductible pursuant to the terms of Sections
162(m) or 280G of the Code.

               (f)  MediaOne has made available to Comcast as of the date
hereof, or will have made available to Comcast within thirty days after the
date hereof, a list and copies of each MediaOne International Plan.
According to the actuarial assumptions and valuations most recently used
for the purpose of funding each MediaOne International Plan (or, if the
same has no such assumptions and valuations or is unfunded, according to
actuarial assumptions and valuations in use by the PBGC on the date
hereof), as of December 31, 1998 the total amount or value of the funds
available under such MediaOne International Plan to pay benefits accrued
thereunder or segregated in respect of such accrued benefits, together with
any reserve or accrual with respect thereto, exceeded the present value of
all benefits (actual or contingent) accrued as of such date of all
participants and past participants therein in respect of which MediaOne or
any MediaOne Subsidiary has or would have after the Effective Time any
obligation.  From and after the Effective Time, Comcast and its Affiliates
will get the full benefit of any such funds, accruals or reserves for the
benefit of covered employees.

               (g)  As of December 31, 1998, the aggregate amount of the
accumulated post-retirement benefit obligation under all MediaOne Employee
Plans, MediaOne Benefit Arrangements and MediaOne International Plans, as
determined in accordance with Statement of Financial Accounting Standards No.
106, did not exceed $25,000,000.

               (h)  Each MediaOne Employee Plan, MediaOne Benefit Arrangement
and MediaOne International Plan has been maintained in compliance with its
terms and with the requirements prescribed by any and all applicable
statutes, orders, rules and regulations (including any special provisions
relating to registration or qualification where such Plan was intended so
to be so registered or qualified) and has been maintained in good standing
with applicable regulatory authorities.

               (i)  No employee or former employee of MediaOne or any MediaOne
Subsidiary will become entitled to any bonus, retirement, severance, job
security or similar benefit or enhanced such benefit (including acceleration of
vesting or exercise of an incentive award) as a result of the transactions
contemplated hereby (either alone or together with any other event).

               (j)  Neither MediaOne nor any of the MediaOne Subsidiaries is a
party to any collective bargaining agreement.  Neither MediaOne nor any of the
MediaOne Subsidiaries is involved in or threatened with any labor dispute,
work stoppage, labor strike, slowdown or grievance.  To the knowledge of
MediaOne, there is no organizing effort or representation question at issue
with respect to any employee of MediaOne or any of  the MediaOne Subsidiaries.

               Section 4.19.  Environmental Matters.  (a) Except as have not
had and would not be reasonably expected to have, individually or in the
aggregate, a MediaOne Material Adverse Effect:

                      (i)  no notice, notification, demand, request for
information, citation, summons or order has been received, no complaint has
been filed, no penalty has been assessed, and no investigation, action, claim,
suit, proceeding or review (or any basis therefor) is pending or, to the
knowledge of MediaOne, is threatened by any Governmental Authority or other
Person relating to or arising out of any Environmental Law;

                     (ii)  MediaOne is and has been in compliance with all
Environmental Laws and all Environmental Permits; and

                    (iii)  there are no liabilities of or relating to MediaOne
or any MediaOne Subsidiary of any kind whatsoever, whether accrued, contingent,
absolute, determined, determinable or otherwise arising under or relating to
any Environmental Law and there are no facts, conditions, situations or set of
circumstances that could reasonably be expected to result in or be the basis
for any such liability.

               (b)  There have been no environmental investigations, studies,
audits, tests, reviews or other analyses conducted of which MediaOne has
knowledge in relation to the current or prior business of MediaOne or any
MediaOne Subsidiary or any property or facility now or previously owned or
leased by MediaOne or any MediaOne Subsidiary that reveal matters that,
individually or in the aggregate, have had or would reasonably be expected to
have a MediaOne Material Adverse Effect.

               (c)  For purposes of this Section 4.19, the terms "MediaOne" and
"MediaOne Subsidiary" shall include any entity that is, in whole or in part, a
predecessor of MediaOne or any MediaOne Subsidiary.

               Section 4.20.  Intellectual Property.  With such exceptions as,
individually or in the aggregate, have not had and would not be reasonably
expected to have a MediaOne Material Adverse Effect, each of MediaOne and the
MediaOne Subsidiaries own or have a valid license to use each trademark,
service mark, trade name, invention, patent, trade secret, copyright, know-how
(including any registrations or applications for registration of any of the
foregoing) or any other similar type of proprietary intellectual property right
(collectively, the "MediaOne Intellectual Property") necessary to carry on its
business substantially as currently conducted.  Neither MediaOne nor any
MediaOne Subsidiary has received any notice of infringement of or conflict
with, and to MediaOne's knowledge, there are no infringements of or conflicts
with, the rights of any Person with respect to the use of any MediaOne
Intellectual Property that, in either such case, individually or in the
aggregate, have had or would be reasonably expected to have, a MediaOne
Material Adverse Effect.

               Section 4.21.  Contracts.  Neither MediaOne nor any of the
MediaOne Subsidiaries is a party to or bound by (i) any "material contract"
(as such term is defined in Item 601(b)(10) of Regulation S-K of the SEC) or
any agreement, contract or commitment that would be such a "material contract"
but for the exception for contracts entered into in the ordinary course of
business, (ii) any non-competition agreement or any other agreement or
obligation which materially limits or will materially limit MediaOne or any of
the MediaOne Subsidiaries (or after the Merger, Comcast or any of the Comcast
Subsidiaries) from engaging in the business of providing cable television,
telephony or data transmission services in the United States or the business
of providing programming content in the United States, the United Kingdom or
Japan, (iii) any agreement, contract or commitment to which TW or any of its
Affiliates is a party that amends the TWE Partnership Agreement or any related
agreement or affects the rights or obligations of MediaOne or any MediaOne
Subsidiary with respect to TWE or any TWE Subsidiary or (iv) any material
agreement, contract or commitment to which U S WEST or any of its Affiliates
is a party that is not in the ordinary course of business of MediaOne and the
MediaOne Subsidiaries.  With such exceptions as, individually or in the
aggregate, have not had, and would not be reasonably expected to have, a
MediaOne Material Adverse Effect, (x) each of the contracts, agreements and
commitments of the MediaOne and the MediaOne Subsidiaries is valid and in full
force and effect and (y) neither MediaOne nor any of the MediaOne Subsidiaries
has violated any provision of, or committed or failed to perform any act
which, with or without notice, lapse of time, or both, would constitute a
default under the provisions of any such contract, agreement or commitment.
To the knowledge of MediaOne, no counterparty to any such contract, agreement
or commitment has violated any provision of, or committed or failed to perform
any act which, with or without notice, lapse of time, or both would constitute
a default or other breach under the provisions of, such contract, agreement or
commitment, except for defaults or breaches which, individually or in the
aggregate, have not had, or would not reasonably be expected to have, a
MediaOne Material Adverse Effect.  Neither MediaOne nor any MediaOne
Subsidiary is a party to, or otherwise a guarantor of or liable with respect
to, any interest rate, currency or other swap or derivative transaction, other
than any such transactions which are not material to the business of the
MediaOne Group.  MediaOne has provided or made available to Comcast a copy of
each agreement described in item (i), (ii), (iii) or (iv) above.

               Section 4.22.  TWE.  MediaOne, directly or indirectly, owns a
25.51% priority capital and residual equity interest in TWE as described in the
TWE Partnership Agreement.  As of the date hereof, to the knowledge of
MediaOne, there are no facts or circumstances with respect to TWE or the TWE
Subsidiaries that, individually or in the aggregate, have had or would be
reasonably expected to have a material adverse effect on MediaOne's investment
in TWE.

               Section 4.23.  Vote Required.  The only vote of the holders of
any class or series of capital stock of MediaOne necessary to approve this
Agreement and the transactions contemplated hereby is the affirmative vote of
the holders of a majority of the outstanding shares of MediaOne Common Stock
(the "MediaOne Stockholders' Approval").

               Section 4.24.  Antitakeover Statutes and Rights Agreement.  (a)
MediaOne has taken all action necessary to exempt the Merger and this
Agreement and the transactions contemplated hereby from the restrictions of
Section 203 of Delaware Law, and, accordingly, neither such Section nor any
other antitakeover or similar statute or regulation applies or purports to
apply to any such transactions.  No other "control share acquisition," "fair
price," "moratorium" or other antitakeover laws or regulations enacted under
U.S. state or federal laws apply to this Agreement or any of the transactions
contemplated hereby.

                (b)  MediaOne and the MediaOne Board have taken all necessary
action to (i) render the MediaOne 1995 Rights Agreement inapplicable to the
Merger and the other transactions contemplated by this Agreement, (ii) provide
that (A) neither Comcast nor any Comcast Subsidiary shall be deemed an
Acquiring Person (as defined in the MediaOne 1995 Rights Agreement) as a
result of this Agreement or any of the transactions contemplated hereby, (B)
no 15% Ownership Date or Distribution Date (each as defined in the MediaOne
1995 Rights Agreement) shall be deemed to have occurred as a result of this
Agreement or any of the transactions contemplated hereby and (C) the rights
issuable pursuant the MediaOne 1995 Rights Agreement will not separate from
the shares of MediaOne Common Stock as a result of the approval, execution or
delivery of this Agreement or the consummation of the transactions
contemplated hereby.

               (c)  MediaOne and the MediaOne Board have taken all necessary
action to (i) render the MediaOne 1999 Rights Agreement inapplicable to the
Merger and the other transactions contemplated by this Agreement, (ii) provide
that (A) neither Comcast nor any Comcast Subsidiary shall be deemed an
Acquiring Person (as defined in the MediaOne 1999 Rights Agreement) as a
result of this Agreement or any of the transactions contemplated hereby, (B)
no Distribution Date (as defined in the MediaOne 1999 Rights Agreement) shall
be deemed to have occurred as a result of this Agreement or the consummation
of any of the transactions contemplated hereby and (C) the rights issuable
pursuant to the MediaOne 1999 Rights Agreement will not separate from the
shares of MediaOne Common Stock, as a result of the approval, execution or
delivery of this Agreement or the consummation of the transactions
contemplated hereby.



                                   ARTICLE 5
                   Representations and Warranties of Comcast

               Except as set forth in the Comcast Disclosure Schedule or as
disclosed in the Comcast SEC Documents filed prior to the date hereof,
Comcast represents and warrants to MediaOne that:

               Section 5.1.  Corporate Existence and Power.  Comcast is a
corporation duly incorporated and subsisting under the laws of its jurisdiction
of incorporation and has all corporate powers required to carry on its business
as now conducted.  Comcast is duly qualified to do business as a foreign
corporation and is in good standing in each jurisdiction where such
qualification is necessary except for those jurisdictions where failure to be
so qualified, individually or in the aggregate, has not had and would not be
reasonably expected to have a Comcast Material Adverse Effect.  Comcast has
heretofore delivered or made available to MediaOne true and complete copies
of the articles of incorporation and bylaws of Comcast, as currently in
effect.

               Section 5.2.  Corporate Authorization.  (a) The execution,
delivery and performance by Comcast and the consummation by Comcast of the
transactions contemplated hereby are within the corporate powers of Comcast,
and have been duly authorized by all necessary corporate action, except for the
required approval of Comcast's shareholders of the issuance of Comcast Common
Stock in the Merger and the amendment to the articles of incorporation of
Comcast contemplated by Section 2.3.  This Agreement constitutes a valid and
binding agreement of Comcast enforceable against Comcast in accordance with
its terms, except (i) as the same may be limited by applicable bankruptcy,
insolvency, moratorium or similar laws of general application relating to or
affecting creditors' rights, and (ii) for the limitations imposed by general
principles of equity.

               (b)  Comcast's Board of Directors, at a meeting duly called and
held, has unanimously: (i) determined that this Agreement and the transactions
contemplated hereby are fair to and in the best interests of Comcast's
stockholders; (ii) approved this Agreement and the transactions contemplated
hereby; and (iii) resolved to recommend approval of the issuance of the
Comcast Common Stock in the Merger and the amendment to the articles of
incorporation of Comcast as contemplated by Section 2.3.

               Section 5.3.  Governmental Authorization.  The execution,
delivery and performance by Comcast of this Agreement and the consummation by
Comcast of the transactions contemplated hereby require no action by or in
respect of, or filing with, any Governmental Authority, other than:  (i) the
filing of a certificate of merger with respect to the Merger with the Delaware
Secretary of State and appropriate documents with the relevant authorities of
other states in which Comcast is qualified to do business; (ii)  the filing of
articles of merger with respect to the Merger with the Pennsylvania Department
of State; (iii) the filing of an amendment to the articles of incorporation of
Comcast with the Pennsylvania Department of State with respect to the
amendment contemplated by Section 2.3; (iv) compliance with any applicable
requirements of the HSR Act; (v) compliance with any applicable requirements
of the 1933 Act, the 1934 Act and any other applicable securities laws,
whether state or foreign; and (vi) any actions or filings the absence of
which, individually or in the aggregate, would not be reasonably expected to
have a Comcast Material Adverse Effect or materially impair or delay the
ability of Comcast to consummate the transactions contemplated by this
Agreement.

               Section 5.4.  Non-contravention.  The execution, delivery and
performance by Comcast of this Agreement and the consummation by Comcast of
the transactions contemplated hereby do not and will not (i) subject to the
amendment to the Comcast articles of incorporation contemplated by Section
2.3, contravene, conflict with, or result in any violation or breach of any
provision of the articles of incorporation or bylaws of Comcast; (ii) assuming
compliance with the matters referred to in Section 5.3, contravene, conflict
with or result in a violation or breach of any provision of any law, rule,
regulation, judgment, injunction, order or decree; (iii) require any consent or
other action by any Person under, constitute a default under (or an event that,
with or without notice or lapse of time or both, would constitute a default),
or cause or permit the termination, cancellation, acceleration, triggering or
other change of any right or obligation or the loss of any benefit to which
Comcast or any of the Comcast Subsidiary is entitled under (A) any provision
of any agreement or other instrument binding upon Comcast or any Comcast
Subsidiary or (B) any license, franchise, permit, certificate, approval or
other similar authorization held by, or affecting, or relating in any way to,
the assets or business of Comcast or any Comcast Subsidiary; or (iv) result in
the creation or imposition of any Lien on any asset of  Comcast or any Comcast
Subsidiary, other than such exceptions in the case of clauses (ii), (iii) and
(iv) as would not be, individually or in the aggregate, reasonably expected to
have a Comcast Material Adverse Effect or materially impair the ability of
Comcast to consummate the transactions contemplated by this Agreement.

               Section 5.5.  Capitalization.  (a) The authorized capital stock
of Comcast consists of (i) 200,000,000 shares of Class A Common Stock, par
value $1.00 per share (the "Comcast Class A Common Stock"), (ii) 50,000,000
shares of Class B Common Stock, par value $1.00 per share (the "Comcast Class
B Common Stock"), (iii) as of the date hereof, 500,000,000 shares of Comcast
Common Stock, and as of the Effective Time between 2,500,000,000 and
5,000,000,000 shares of Comcast Common Stock and (iv) 20,000,000 shares of
Preferred Stock, of which (A) 6,370 shares have been designated Series A
Convertible Preferred Stock (the "Comcast Series A Preferred Stock") and (B)
1,419,099 have been designated Series B Convertible Preferred Stock (the
"Comcast Series B Preferred Stock").  As of the close of business on March 19,
1999, there were outstanding (i) 31, 499,438 shares of Comcast Class A Common
Stock, (ii) 9,444,375 shares of Comcast Class B Common Stock, (iii)
329,188,843 shares of Comcast Common Stock, (iv) employee and non-employee
director stock options to purchase an aggregate of 18,878,064 shares of
Comcast Common Stock (of which options to purchase an aggregate of 5,974,689
shares of Comcast Class A Common Stock were exercisable), (v) 6,370 shares of
Comcast Series A Preferred Stock and (vi) 540,689.82 shares of Comcast Series
B Preferred Stock.  All outstanding shares of capital stock of Comcast have
been duly authorized and validly issued and are fully paid and nonassessable.

               (b)  Except as set forth in this Section 5.5 and for changes
since March 19, 1999 resulting from (w) the April 20 Dividend, (x) the
exercise of employee and non-employee director stock options outstanding on
such date (and the grant or award of employee and non-employee director
stock options in the ordinary course of business and the exercise thereof),
(y) the conversion of shares of Comcast Series A Preferred Stock
outstanding on such date and (z) the conversion of shares of Comcast Series
B Preferred Stock outstanding on such date, there are no outstanding (i)
shares of capital stock or voting securities of Comcast, (ii) securities of
Comcast convertible into or exchangeable for shares of capital stock or
voting securities of Comcast or (iii) options or other rights to acquire
from Comcast or other obligations of Comcast to issue, any capital stock,
voting securities or securities convertible into or exchangeable for
capital stock or voting securities of Comcast.  There are no outstanding
obligations of Comcast or any Comcast Subsidiary to repurchase, redeem or
otherwise acquire any of the securities referred to in clause (i), (ii) or
(iii) above (collectively, the "Comcast Securities").

               (c)  The Comcast Securities to be issued as part of the Common
Stock Consideration, the Series C Consideration, Series D Consideration and
Series E Consideration (or upon exercise of Adjusted Options) have been
duly authorized and, when issued and delivered in accordance with the terms
of this Agreement (or the Adjusted Options, as the case may be), will have
been validly issued and will be fully paid and nonassessable and the
issuance thereof is not subject to any preemptive or other similar right.
Prior to the Effective Time, Comcast will reserve for issuance the Comcast
Common Stock to be issued upon exercise of the Adjusted Options.

               Section 5.6.  Subsidiaries.  (a) Each Comcast Subsidiary is a
corporation or other legal entity duly organized, validly existing and in good
standing under the laws of its jurisdiction of organization, has all corporate
partnership or other similar powers required to carry on its business as now
conducted other than such exceptions as, individually or in the aggregate, have
not had and would not reasonably be expected to have a Comcast Material
Adverse Effect.  Each Comcast Subsidiary is duly qualified to do business as a
foreign corporation or other foreign legal entity and is in good standing in
each jurisdiction where such qualification is necessary, with such exceptions,
individually or in the aggregate, as have not had and would not be reasonably
expected to have a Comcast Material Adverse Effect.  The Comcast Disclosure
Schedule sets forth a list of all Comcast Significant Subsidiaries and their
respective jurisdictions of incorporation and identifies Comcast's (direct or
indirect) percentage ownership interest therein.

               (b)  All of the outstanding capital stock of, or other voting
securities or ownership interests in, each Comcast Significant Subsidiary is
owned by Comcast, directly or indirectly, free and clear of any Lien and free
of any other limitation or restriction (including any restriction on the right
to vote, sell or otherwise dispose of such capital stock or other voting
securities or ownership interests).  There are no outstanding (i) securities
of Comcast or any Comcast Subsidiary convertible into or exchangeable for
shares of capital stock or other voting securities or ownership interests in
any Comcast Significant Subsidiary or (ii) options or other rights to acquire
from Comcast or any Comcast Subsidiary, or other obligations of Comcast or any
Comcast Subsidiary to issue, any capital stock or other voting securities or
ownership interests in, or any securities convertible into or exchangeable for
any capital stock or other voting securities or ownership interests in, any
Comcast Significant Subsidiary.  There are no outstanding obligations of
Comcast or any Comcast Significant Subsidiary to repurchase, redeem or
otherwise acquire any of the securities referred to in clauses (i) or (ii)
above.

               Section 5.7.  SEC Filings.  (a) Comcast has delivered or made
available to MediaOne (i) Comcast's annual reports on Form 10-K for its fiscal
years ended December 31, 1998, 1997 and 1996, (ii) its proxy or information
statements relating to meetings of, or actions taken without a meeting by
Comcast's stockholders held since December 31, 1997, and (iii) all of its other
reports, statements, schedules and registration statements filed with the SEC
since December 31, 1997 (the documents referred to in this Section 5.7(a),
collectively, the "Comcast SEC Documents").

               (b)  As of its filing date, each Comcast SEC Document complied
as to form in all material respects with the applicable requirements of the
1933 Act and 1934 Act, as the case may be.

               (c)  As of its filing date, each Comcast SEC Document filed
pursuant to the 1934 Act did not contain any untrue statement of a material
fact or omit to state any material fact necessary in order to make the
statements made therein, in the light of the circumstances under which they
were made, not misleading.

               (d)  Each Comcast SEC Document that is a registration
statement, as amended or supplemented, if applicable, filed pursuant to the
1933 Act, as of the date such registration statement or amendment became
effective, did not contain any untrue statement of a material fact or omit
to state any material fact required to be stated therein or necessary to
make the statements therein not misleading.

               Section 5.8.  Financial Statements.  The audited consolidated
financial statements and unaudited consolidated interim financial statements
of Comcast included in the Comcast SEC Documents fairly present, in all
material respects, in conformity with GAAP applied on a consistent basis
(except as may be indicated in the notes thereto), the consolidated financial
position of Comcast and its consolidated Subsidiaries as of the dates thereof
and their consolidated results of operations and cash flows for the periods
then ended (subject to normal year-end adjustments in the case of any
unaudited interim financial statements).

               Section 5.9.  Information Supplied.  The information supplied by
Comcast  for inclusion in the Registration Statement shall not at the time the
Registration Statement is declared effective by the SEC 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.  The
information supplied by Comcast for inclusion in the Proxy Statement
to be sent to the stockholders of MediaOne in connection with the MediaOne
Stockholders' Meeting and to the stockholders of Comcast in connection with
the Comcast Stockholders' Meeting shall not, on the date the Proxy Statement
is first mailed to the stockholders of MediaOne and Comcast or at the time
either of the Stockholders' Meetings or at the Effective Time, 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.

               Section 5.10.  Absence of Certain Changes.  Since the Comcast
Balance Sheet Date, the business of Comcast and the Comcast Subsidiaries has
been conducted in the ordinary course consistent with past practices.  Since
the Comcast Balance Sheet Date, there has not been:

                 (a)  any event, occurrence or development of a state of
circumstances or facts which, individually or in the aggregate, has had or
would be reasonably expected to have a Comcast Material Adverse Effect; or

                 (b)  any action, event, occurrence or transaction that would
have been prohibited by Section 7.1 if this Agreement had been in effect as of
the time thereof.

               Section 5.11.  No Undisclosed Material Liabilities.  There are
no liabilities or obligations of Comcast or any Comcast Subsidiary of any kind
whatsoever, whether accrued, contingent, absolute, determined, determinable
or otherwise, and there is no existing condition, situation or set of
circumstances that could be reasonably expected to result in such a liability
or obligation, other than:

                 (a)  liabilities or obligations disclosed and provided for in
the Comcast Balance Sheet or in the notes thereto or in the Comcast SEC
Documents filed prior to the date hereof;

                 (b)  liabilities or obligations incurred in the ordinary
course of business consistent with past practice since the Comcast Balance
Sheet Date; or

                 (c)  liabilities or obligations that, individually or in the
aggregate have not had and would not be reasonably expected to have a Comcast
Material Adverse Effect.

               Section 5.12.  Compliance with Laws and Court Orders.  Comcast
and the Comcast Subsidiaries hold all licenses, franchises, certificates,
consents, permits, qualifications and authorizations from all Governmental
Authorities necessary for the lawful conduct of their business, except where
the failure to hold any of the foregoing, individually or in the aggregate,
has not had and would not be reasonably expected to have a Comcast Material
Adverse Effect. Comcast and each of the Comcast Subsidiaries are, and have
been in compliance with, and to the knowledge of Comcast, are not under
investigation with respect to and have not been threatened to be charged with
or given notice of any violation of, any such license, franchise, certificate,
consent, permit, qualification or authorization, applicable law, statute,
ordinance, rule, regulation, judgment, injunction, order or decree, except for
failures to comply or violations that, individually or in the aggregate, have
not had and would not be reasonably expected to have a Comcast Material
Adverse Effect.

               Section 5.13.  Litigation.  There is no action, suit,
investigation or proceeding (or any basis therefor) pending against, or, to
the knowledge of Comcast, threatened against or affecting, Comcast, any
Comcast Subsidiary, or any of their respective properties before any court or
arbitrator or before or by any other Governmental Authority, that,
individually or in the aggregate, would be reasonably expected to have a
Comcast Material Adverse Effect.

               Section 5.14.  Finders' Fees.  Except for Salomon Smith Barney
Inc., a copy of whose engagement agreement has been provided to MediaOne,
whose fees will be paid by Comcast, there is no investment banker, broker,
finder or other intermediary that has been retained by or is authorized to act
on behalf of Comcast or any Comcast Subsidiary who might be entitled to any
fee or commission from Comcast or any of the Comcast Subsidiaries upon
consummation of the transactions contemplated by this Agreement.

               Section 5.15.  Opinion of Financial Advisor.  Comcast has
received an opinion of Salomon Smith Barney Inc., financial advisor to
Comcast, to the effect that, as of March 21, 1999, the Common Stock Ratio is
fair to Comcast from a financial point of view.

               Section 5.16.  Taxes.  Except as set forth in the Comcast
Balance Sheet (including the notes thereto) and except as would not be,
individually or in the aggregate, reasonably expected to have a Comcast
Material Adverse Effect: (i) all Comcast Tax Returns required to be filed with
any taxing authority by, or with respect to, Comcast and the Comcast
Subsidiaries have been filed in accordance with all applicable laws; (ii)
Comcast and the Comcast Subsidiaries have timely paid all Taxes shown as due
and payable on the Comcast Tax Returns that have been so filed, and, as of the
time of filing, the Comcast Tax Returns correctly reflected the facts
regarding the income, business, assets, operations, activities and the status
of Comcast and the Comcast Subsidiaries (other than Taxes which are being
contested in good faith and for which adequate reserves are reflected on the
Comcast Balance Sheet); (iii) Comcast and the Comcast Subsidiaries have made
provision for all Taxes payable by Comcast and the Comcast Subsidiaries for
which no Comcast Tax Return has yet been filed; (iv) the charges, accruals and
reserves for Taxes with respect to Comcast and the Comcast Subsidiaries
reflected on the Comcast Balance Sheet are adequate under GAAP to cover the Tax
liabilities accruing through the date thereof; (v) there is no action, suit,
proceeding, audit or claim now proposed or pending against or with respect to
Comcast or any Comcast Subsidiary in respect of any Tax where there is a
reasonable possibility of an adverse determination; (vi) the federal income Tax
Returns of Comcast and the Comcast Subsidiaries have been examined and settled
with the IRS (or the applicable statutes of limitation for the assessment of
federal income Taxes for such periods have expired) for all years through
1991; and (vii) there are no material Liens or encumbrances for Taxes on any
of the assets of Comcast or any Comcast Subsidiary except liens for current
Taxes not yet due.

               Section 5.17.  Tax Opinions.  There are no facts or
circumstances relating to Comcast that would prevent Davis Polk & Wardwell from
delivering the opinion referred to in Section 9.2(c) as of the date hereof.

               Section 5.18.  Employee Benefit Plans and Labor Matters.
Except as have not and would not be reasonably expected to have, individually
or in the aggregate, a Comcast Material Adverse Effect:

               (a)  The Comcast Disclosure Schedule contains a true and
complete list, as of the date hereof, of all Comcast Employee Plans and all
Comcast Benefit Arrangements.  Copies of each Comcast Employee Plan and
each Comcast Benefit Arrangements (and, if applicable, related trust
agreements) and all amendments thereto and written interpretations thereof
have been made available to MediaOne as of the date hereof or will be made
available to MediaOne within thirty days after the date hereof, together
with the three most recent annual reports (Form 5500 including, if
applicable, Schedule B thereto) and the most recent actuarial valuation
report prepared in connection with any Comcast Employee Plan.

               (b)  No "accumulated funding deficiency," as defined in
Section 412 of the Code, has been incurred with respect to any Comcast
Employee Plan subject to such Section 412, whether or not waived.  No
"reportable event" within the meaning of Section 4043 of ERISA, and no
event described in Section 4062 or 4063 of ERISA has occurred in connection
with any Comcast Employee Plan.  Neither Comcast nor any ERISA Affiliate of
Comcast has (i) engaged in, or is a successor or parent corporation to an
entity that has engaged in, a transaction described in Sections 4069 or
4212(c) of ERISA or (ii) incurred, or reasonably expects to incur prior to
the Effective Time (A) any liability under Title IV of ERISA arising in
connection with the termination of, or a complete or partial withdrawal
from, any plan covered or previously covered by Title IV of ERISA or (B)
any liability under Section 4971 of the Code that in either case could
become a liability of Comcast, any Comcast Subsidiary, MediaOne or any of
their ERISA Affiliates after the Effective Time.  If a "complete
withdrawal" by Comcast and all of its ERISA Affiliates were to occur as of
the Effective Time with respect to all Multiemployer Plans, none of
Comcast, any Comcast Subsidiary or any of their ERISA Affiliates would
incur any withdrawal liability under Title IV of ERISA.

               (c)  As of December 31, 1998, the fair market value of the
assets of each Comcast Pension Plan (excluding for these purposes any
accrued but unpaid contributions) exceeded the present value of all
benefits accrued under such Comcast Pension Plan determined on a
termination basis using the assumptions established by the PBGC as in
effect on such date.  As of December 31, 1998, the aggregate unfunded
liability of Comcast and any Comcast Subsidiary in respect of all Comcast
Deferred Compensation Plans, computed using reasonable actuarial
assumptions and determined as if all benefits under such plans were vested
and payable as of such date, did not exceed $260,000,000.

               (d)  Each Comcast Employee Plan that is intended to be
qualified under Section 401(a) of the Code is the subject of a favorable
qualification determination letter issued by the IRS and to Comcast's
knowledge each such Comcast Employee Plan is so qualified.

               (e)  There is no contract, plan or arrangement (written or
otherwise) covering any employee or former employee of Comcast or any Comcast
Subsidiary that, individually or collectively, could give rise to the payment
of any amount contingent on the transactions contemplated by hereby that would
not be deductible pursuant to the terms of Sections 162(m) or 280G of the
Code.

               (f)  Comcast has made available to MediaOne as of the date
hereof, or will make available to MediaOne within thirty days after the
date hereof, a list and copies of each material Comcast International Plan.
According to the actuarial assumptions and valuations most recently used
for the purpose of funding each Comcast International Plan (or, if the same
has no such assumptions and valuations or is unfunded, according to
actuarial assumptions and valuations in use by the PBGC on the date
hereof), as of December 31, 1998 the total amount or value of the funds
available under such Comcast International Plan to pay benefits accrued
thereunder or segregated in respect of such accrued benefits, together with
any reserve or accrual with respect thereto, exceeded the present value of
all benefits (actual or contingent) accrued as of such date of all
participants and past participants therein in respect of which Comcast or
any Comcast Subsidiary has or would have after the Effective Time any
obligation.  From and after the Effective Time, MediaOne and its Affiliates
will get the full benefit of any such funds, accruals or reserves.

               (g)  As of December 31, 1998, the aggregate amount of the
accumulated post-retirement benefit obligation under all Comcast Employee
Plans, Comcast Benefit Arrangements and Comcast International Plans, as
determined in accordance with the Statement of Financial Accounting Standards
No. 106, did not exceed $50,000,000.

               (h)  Each Comcast Employee Plan, Comcast Benefit Arrangement
and Comcast International Plan has been maintained in compliance with its terms
and with the requirements prescribed by any and all applicable statutes,
orders, rules and regulations (including any special provisions relating to
registration or qualification plans where such Plan was intended so to be so
registered or qualified) and has been maintained in good standing with
applicable regulatory authorities.

               (i)  No employee or former employee of Comcast or any Comcast
Subsidiary will become entitled to any bonus, retirement, severance, job
security or similar benefit or enhanced such benefit (including acceleration of
vesting or exercise of an incentive award) as a result of the transactions
contemplated hereby (either alone or together with any other event).

               (j)  Neither Comcast nor any of the Comcast Subsidiaries is a
party to any collective bargaining agreement.  Neither Comcast nor any of the
Comcast Subsidiaries is involved in or threatened with any labor dispute, work
stoppage, labor strike, slowdown or grievance.  To the knowledge of Comcast,
there is no organizing effort or representation question at issue with respect
to any employee of Comcast or any of the Comcast Subsidiaries.

               Section 5.19.  Environmental Matters.  (a) Except as have not
had and would not be reasonably expected to have, individually or in the
aggregate, a Comcast Material Adverse Effect:

                 (i)  no notice, notification, demand, request for information,
citation, summons or order has been received, no complaint has been filed, no
penalty has been assessed, and no investigation, action, claim, suit,
proceeding or review (or any basis therefor) is pending or, to the knowledge
of Comcast, is threatened by any Governmental Authority or other Person
relating to or arising out of any Environmental Law;

                (ii)  Comcast is and has been in compliance with all
Environmental Laws and all Environmental Permits; and

               (iii)  there are no liabilities of or relating to Comcast or any
Comcast Subsidiary of any kind whatsoever, whether accrued, contingent,
absolute, determined, determinable or otherwise arising under or relating to
any Environmental Law and there are no facts, conditions, situations or set of
circumstances that could reasonably be expected to result in or be the basis
for any such liability.

               (b)  There have been no environmental investigations, studies,
audits, tests, reviews or other analyses conducted of which Comcast has
knowledge in relation to the current or prior business of Comcast or any
Comcast Subsidiary or any property or facility now or previously owned or
leased by Comcast or any Comcast Subsidiary that reveal matters that,
individually or in the aggregate, have had or would reasonably be expected to
have a Comcast Material Adverse Effect.

               (c)  For purposes of this Section 5.19, the terms "Comcast" and
"Comcast Subsidiary" shall include any entity that is, in whole or in part, a
predecessor of Comcast or any Comcast Subsidiary.

               Section 5.20.  Intellectual Property.  With such exceptions as,
individually or in the aggregate, have not had and would not be reasonably
expected to have a Comcast Material Adverse Effect, each of Comcast and the
Comcast Subsidiaries own or have a valid license to use each trademark,
service mark, trade name, invention, patent, trade secret, copyright, know-how
(including any registrations or applications for registration of any of the
foregoing) or any other similar type of proprietary intellectual property right
(collectively, the "Comcast Intellectual Property") necessary to carry on its
business substantially as currently conducted.  Neither Comcast nor any
Comcast Subsidiary has received any notice of infringement of or conflict
with, and to Comcast's knowledge, there are no infringements of or conflicts
with, the rights of any Person with respect to the use of any Comcast
Intellectual Property that, in either such case, individually or in the
aggregate, have had or would be reasonably expected to have, a Comcast Material
Adverse Effect.

               Section 5.21.  Contracts.  Neither Comcast nor any of the
Comcast Subsidiaries is a party to or bound by (i) any "material contract" (as
such term is defined in Item 601(b)(10) of Regulation S-K of the SEC) or any
agreement, contract or commitment that would be such a "material contract" but
for the exception for contracts entered into in the ordinary course of
business, (ii) any non-competition agreement or any other agreement or
obligation which materially limits or will materially limit Comcast or the
Comcast Subsidiaries (or after the Merger, MediaOne or the MediaOne
Subsidiaries) from engaging in the business of providing cable television,
telephony or data transmission services in the United States or the business
of providing programming content or (iii) any contract or agreement with Sural
Corporation, Brian L. Roberts, Ralph J. Roberts or any of their Affiliates
other than (A) compensation arrangements (including life insurance
arrangements) and (B) other contracts and agreements not in excess of $100,000
per annum in the aggregate.  With such exceptions as, individually or in the
aggregate, have not had, and would not reasonably be expected to have, a
Comcast Material Adverse Effect, (i) each of the contracts, agreements and
commitments of Comcast and the Comcast Subsidiaries is valid and in full force
and effect and (ii) neither Comcast nor any of the Comcast Subsidiaries has
violated any provision of, or committed or failed to perform any act which,
with or without notice, lapse of time, or both, would constitute a default
under the provisions of, any such contract, agreement or commitment.  To the
knowledge of Comcast, no counterparty to any such contract, agreement or
commitment has violated any provision of, or committed or failed to perform
any act which, with or without notice, lapse of time, or both would constitute
a default or other breach under the provisions of such contract, agreement or
commitment, except for defaults or breaches which, individually or in the
aggregate, have not had, or would not reasonably be expected to have, a
Comcast Material Adverse Effect.  Neither Comcast nor any Comcast Subsidiary
is a party to, or otherwise a guarantor of or liable with respect to, any
interest rate, currency or other swap or derivative transaction, other than
any such transactions which are not material to the business of Comcast and
the Comcast Subsidiaries, taken as a whole.  Comcast has provided or made
available to MediaOne a copy of each agreement of the type described in item
(i) or (ii) above.

               Section 5.22.  Vote Required.  The only vote of the holders of
any class or series of capital stock necessary to approve the issuance of
Comcast Common Stock in the Merger is the affirmative vote of a majority of
the votes cast by holders of Comcast Class A Common Stock and Comcast Class B
Common Stock (voting as a single class) at the Comcast Stockholders' Meeting.
The only vote of the holders of any class or series of capital stock necessary
to approve the amendment to the articles of incorporation contemplated by
Section 2.3 is the affirmative vote of a majority of the votes of the
outstanding shares of the Comcast Class A Common Stock and the Comcast Class B
Common Stock (voting as a single class).

               Section 5.23.  MediaOne Securities.  Neither Comcast nor any of
the Comcast Subsidiaries owns any securities of MediaOne.


                                   ARTICLE 6
                             Covenants of MediaOne

               MediaOne agrees that:

               Section 6.1.  MediaOne Interim Operations.  Except as set forth
in the MediaOne Disclosure Schedule or as otherwise expressly contemplated
hereby, without the prior written consent of Comcast, from the date hereof
until the Effective Time, MediaOne shall, and shall cause each of the MediaOne
Subsidiaries to, conduct its business in all material respects in the ordinary
course consistent with past practice and use all reasonable efforts to: (i)
preserve intact its present business organization; (ii)  keep available the
services of its key officers and key employees; (iii) maintain in effect all
material foreign, federal, state and local licenses, approvals and
authorizations, including, without limitation, all material licenses and
permits that are required for MediaOne or any MediaOne Subsidiary to carry on
its business and (iv) preserve existing relationships with its material
partners, lenders, suppliers and others having material business relationships
with it so that the business of MediaOne and the MediaOne Subsidiaries shall
not be impaired in any material respect at the Effective Time.  Without
limiting the generality of the foregoing, except as set forth in the MediaOne
Disclosure Schedule or as otherwise expressly contemplated by this Agreement,
from the date hereof until the Effective Time, without the prior written
consent of Comcast, MediaOne shall not, nor shall it permit any MediaOne
Subsidiary to:

                 (a)  amend its articles of incorporation or by-laws or other
applicable governing instrument;

                 (b)  amend any material term of any of its outstanding
securities;

                 (c)  split, combine, subdivide or reclassify any shares of its
capital stock or other equity interests or declare, set aside or pay any
dividend or other distribution (whether in cash, stock or property or any
combination thereof) in respect of its capital stock, or redeem, repurchase or
otherwise acquire or offer to redeem, repurchase, or otherwise acquire any of
its securities or any securities of MediaOne or any MediaOne Subsidiary,
except for (i) regular dividends on outstanding preferred stock or trust
preferred securities pursuant to the terms of such securities and (ii)
dividends paid by any MediaOne Subsidiary that is, directly or indirectly,
wholly owned by MediaOne;

                 (d)  adopt a plan or agreement of complete or partial
liquidation, dissolution, merger, consolidation, restructuring,
recapitalization or other material reorganization (other than a merger or
consolidation between wholly owned MediaOne Subsidiaries);

                 (e)  issue, deliver or sell, or authorize the issuance,
delivery or sale of, any shares of its capital stock of any class or other
equity interests or any securities convertible into or exercisable for, or any
rights, warrants or options to acquire, any such capital stock or other equity
interests, other than (i) the issuance of shares of MediaOne Common Stock upon
the exercise of stock options in accordance with their present terms, (ii)
issuances pursuant to the conversion of convertible securities outstanding on
the date hereof and (iii) the granting of options to acquire shares of
MediaOne Common Stock in accordance with Section 6.1(n) of the MediaOne
Disclosure Schedule;

                 (f)  incur any capital expenditures except as set forth in the
MediaOne Disclosure Schedule;

                 (g)  except for capital expenditures, which shall be governed
by clause (f), acquire (by merger, consolidation, acquisition of stock or
assets or otherwise), directly or indirectly, any assets, other than (i)
pursuant to agreements in effect as of the date hereof, (ii) assets used in
the ordinary course of business of MediaOne and the MediaOne Subsidiaries in a
manner that is consistent with past practice or (iii) assets having a fair
market value not exceeding $25,000,000 in the aggregate;

                 (h)  other than pursuant to agreements in effect as of the
date hereof, sell, lease, license, encumber or otherwise transfer any domestic
assets having a fair market value exceeding $25,000,000 in any one transaction
or series of related transactions or $100,000,000 in the aggregate;

                 (i)  incur, assume or guarantee any indebtedness for borrowed
money other than in the ordinary course of business and in amounts and on
terms consistent with past practices;

                 (j)  make any loan, advance or capital contributions to or
investment in any Person other than loans, advances or capital contributions
to or investments in its wholly owned Subsidiaries;

                 (k)  except for capital expenditures, which shall be governed
by clause (f), engage in or enter into any transaction or commitment, enter
into any contract or agreement, or relinquish or amend in any material respect
any contract or other right, in any case, (i) material to the MediaOne Group,
taken as a whole, other than transactions and commitments in the ordinary
course of business consistent with past practices and those contemplated by
this Agreement or (ii) other than in the ordinary course of business
consistent with past practices and other than programming agreements, for the
provision of goods or services that provides for payments in excess of
$25,000,000 per agreement (or $100,000,000 for all agreements for similar
goods or services);

                 (l)  after March 29, 1999, enter into any new programming
agreement unless it has used all commercially reasonable efforts to include
within such agreement a provision permitting it to terminate such agreement
without penalty at the Effective Time if the counterparty thereto has a
programming agreement with Comcast or any Comcast Subsidiary;

                 (m)  enter into any commitment, agreement or arrangement for
the acquisition of high speed modems or digital set-top boxes in quantities
exceeding MediaOne's expected needs for such modems and boxes through June 30,
2001;

                 (n)  amend in any material respects the TWE Partnership
Agreement or enter into or amend any material agreement with TW or its
Affiliates with respect to TWE or any TWE Subsidiary, or (except as prohibited
by the TWE Partnership Agreement, as required by the fiduciary duties of
MediaOne to the TWE Partnership or as an exercise by MediaOne of its rights
with respect to the TWE Management Committee) waive or exercise any material
rights with respect to TWE or any TWE Subsidiary or consent to any material
transaction by or with respect to TWE or any TWE Subsidiary;

                 (o)  enter into any agreement or arrangement that materially
limits or otherwise materially restricts MediaOne, any MediaOne Subsidiary or
any of their respective Affiliates or any successor thereto or that could,
after the Effective Time, materially limit or restrict Comcast, any Comcast
Subsidiary, the Surviving Corporation or any of their Affiliates, from
engaging in the business of providing cable television, telephony or data
transmission services in the United States or the business of providing
programming content in the United States, the United Kingdom or Japan;

                 (p)  except as required pursuant to existing written, binding
agreements or as otherwise mandated by law as of the date hereof (i) enter
into any commitment to provide any severance or termination pay to (or amend
any existing arrangement with) any director, officer or employee of MediaOne
or any MediaOne Subsidiary, (ii) increase the benefits payable under any
existing severance or termination pay policy or employment agreement (other
than as may be increased by function of the existing terms of any such policy
or agreement), (iii) enter into any employment, deferred compensation or other
similar agreement (or amend any such existing agreement) with any director,
officer or employee of MediaOne or any MediaOne Subsidiary, (iv) establish,
adopt or amend (except as required by applicable law) any collective
bargaining, bonus, profit-sharing, thrift, pension, retirement, deferred
compensation, compensation, stock option, restricted stock or other benefit
plan or arrangement covering any director, officer or employee of MediaOne or
any MediaOne Subsidiary, except that MediaOne and the MediaOne Subsidiaries
may amend any such existing agreement or plan or adopt a successor plan or
arrangement to the extent mandated by applicable law or to the extent that
such amendment would not result in a more than de minimis increase in the
costs or liabilities under such agreement or plan, (v) other than in the
ordinary course of business consistent with past practice or as required by
any agreement in effect as of the date hereof, increase the compensation,
bonus or other benefits payable to any director, officer or employee of
MediaOne or any MediaOne Subsidiary or (vi) amend the terms of any outstanding
option to purchase shares in MediaOne Common Stock;

                 (q)  change (i) its methods of accounting or accounting
practices in any material respect, except as required by concurrent changes in
U.S. GAAP or by law or (ii) its fiscal year;

                 (r)  enter into or amend in any material respect (i) any
material joint venture, partnership or other similar arrangement, (ii) any
agreement for the provision by one or more third parties of telephony, data or
other services through the facilities of one or more of the MediaOne Systems,
which is exclusive or which cannot be terminated within two years of the
Effective Time without any penalty, or (iii) any agreement providing for the
right to use the facilities of one or more of the MediaOne Systems, which is
exclusive or which cannot be terminated within two years of the Effective Time
without any penalty;

                 (s)  settle, or propose to settle, any litigation,
investigation, arbitration, proceeding or other claim that is material to the
MediaOne Group taken as a whole;

                 (t)  other than in the ordinary course of business consistent
with past practice, make any material tax election or enter into any
settlement or compromise of any material tax liability;

                 (u)  take any action that would make any representation or
warranty of MediaOne hereunder inaccurate in any material respect at the
Effective Time; or

                 (v)  agree or commit to do any of the foregoing;

provided that the limitations set forth in clauses 6.1(a) through 6.1(v) shall
not apply to any transaction between MediaOne and any MediaOne Subsidiary that
is wholly owned by MediaOne or between any such wholly owned MediaOne
Subsidiaries.

               Section 6.2.  MediaOne Stockholders' Meeting; Proxy Material.
(a) MediaOne shall cause the MediaOne Stockholders' Meeting to be duly called
and held as soon as reasonably practicable for the purpose of voting on the
approval and adoption of this Agreement and the Merger.  In connection with
such meeting, MediaOne will (i) subject to Section 6.2(b), use its best efforts
to obtain the necessary approvals by its stockholders of this Agreement and the
transactions contemplated hereby and (ii) otherwise comply with all legal
requirements applicable to such meeting.

               (b)  Except as provided below, the Board of Directors of
MediaOne shall recommend approval and adoption of this Agreement and the
Merger by MediaOne's stockholders.  The Board of Directors of MediaOne shall
be permitted to withdraw, or modify in a manner adverse to Comcast, its
recommendation to its stockholders, but only if: (i) in the case of a
withdrawal, modification or change that occurs in the Initial Period, MediaOne
has complied with the terms of Section 6.3, including, without limitation, the
requirement in Section 6.3(b) that it notify Comcast promptly after its receipt
of any Acquisition Proposal; (ii) in the case of a withdrawal, modification or
change that occurs in the Initial Period, a Superior Proposal is pending at the
time the Board of Directors determines to take any such action; (iii) the Board
of Directors determines in good faith by a majority vote, on the basis of the
advice of MediaOne's outside counsel, that it must take such action to comply
with its fiduciary duties under applicable law; and (iv) in the case of a
withdrawal, modification or change that occurs after the Initial Period,
MediaOne shall have delivered to Comcast a prior written notice advising
Comcast that it intends to take such action and describing its reasons for
taking such action (such notice to be delivered not less than two days prior
to the time such action is taken).  Unless this Agreement is previously
terminated in accordance with Article 10, MediaOne shall submit this Agreement
to its stockholders at the MediaOne Stockholders' Meeting even if the MediaOne
Board of Directors determines at any time after the date hereof that is no
longer advisable or recommends that the MediaOne stockholders reject it.

               Section 6.3.  No Solicitation.  (a)  From the date hereof until
the termination hereof, MediaOne will not, and will cause the MediaOne
Subsidiaries and the officers, directors, employees, investment bankers,
attorneys, accountants, consultants or other agents or advisors of MediaOne
and the MediaOne Subsidiaries not to, directly or indirectly: (i) take any
action to solicit, initiate, facilitate or encourage the submission of any
Acquisition Proposal; (ii) other than in the ordinary course of business and
not related to an Acquisition Proposal, engage in any discussions or
negotiations with, or disclose any non-public information relating to MediaOne
or any MediaOne Subsidiary or afford access to the properties, books or
records of MediaOne or any MediaOne Subsidiary to, any Person who is known by
MediaOne to be considering making, or has made, an Acquisition Proposal; (iii)
(A) amend or grant any waiver or release under any standstill or similar
agreement with respect to any class of equity securities of MediaOne (a
"Standstill Agreement"), (B) to the fullest extent permitted by Delaware Law,
amend or grant any waiver or release or approve any transaction or redeem
rights under the MediaOne Rights Agreements, (C) approve any transaction under
Section 203 of the Delaware Law or Article IX of the MediaOne certificate of
incorporation or (D) approve of any Person's becoming an "interested
stockholder" under Section 203 of Delaware Law or (iv) enter into any
agreement with respect to an Acquisition Proposal (other than a confidentiality
agreement as described in item (C) below); provided that during the Initial
Period, MediaOne may negotiate or otherwise engage in substantive discussions
with, and furnish non-public information and provide a waiver or release of a
Standstill Agreement (so long as such waiver or release is limited to the
Initial Period) to, any Person (a "Third Party") who delivers an Acquisition
Proposal that the MediaOne Board of Directors reasonably believes will lead to
a Superior Proposal if: (A) MediaOne has complied with the terms of this
Section 6.3, including without limitation, the requirement in Section 6.3(b)
that it notify Comcast promptly after its receipt of any Acquisition Proposal;
(B) the Board of Directors of MediaOne determines in good faith by a majority
vote, on the basis of advice from MediaOne's outside legal counsel, that it
must take such action to comply with its fiduciary duties under applicable
law; and (C) the Third Party executes a confidentiality agreement with terms
no less favorable in the aggregate to MediaOne than those contained in the
Confidentiality Agreement dated as of March 16, 1999 between MediaOne and
Comcast (the "Confidentiality Agreement").  Nothing contained in this
Agreement shall prevent the Board of Directors of MediaOne from complying with
Rule 14e-2 and Rule 14d-9 under the 1934 Act with regard to an Acquisition
Proposal; provided that the Board of Directors of MediaOne shall not recommend
that the stockholders of MediaOne tender their shares in connection with a
tender offer except to the extent the Board of Directors of MediaOne by a
majority vote determines in its good faith judgment that such a recommendation
is required to comply with the fiduciary duties of the Board of Directors of
MediaOne to shareholders under applicable law, after receiving the advice of
outside legal counsel.  As used herein, the term "Initial Period" means the
45-day period commencing on the date hereof; provided that if MediaOne has
delivered to Comcast a notice pursuant to Section 10.1(d)(iii)(A) after the
24th day after the date hereof but prior to the end of such 45-day period, the
Initial Period shall be extended for such period (not to exceed 21 days from
the date of delivery of such notice) as the negotiations with the Third Party
making the Superior Proposal referred to in such notice shall continue but
during any such period after the 45th day from the date hereof the proviso to
the first sentence of this Section 6.3(a) shall apply only to such Third
Party.

               (b)  MediaOne will notify Comcast promptly (but in no event
later than 24 hours) after receipt by MediaOne (or any of its advisors) of any
Acquisition Proposal, or of any request (other than in the ordinary course of
business and not related to an Acquisition Proposal) for non-public information
relating to MediaOne or any of the MediaOne Subsidiaries or for access to the
properties, books or records of MediaOne or any MediaOne Subsidiary by any
Person who is known to be considering making, or has made, an Acquisition
Proposal.  MediaOne shall provide such notice orally and in writing and shall
identify the Person making, and the terms and conditions of, any such
Acquisition Proposal, indication or request.  MediaOne shall keep Comcast
fully informed, on a prompt basis (but in any event no later than 24 hours),
of the status and details of any such Acquisition Proposal, indication or
request.  MediaOne shall, and shall cause the MediaOne Subsidiaries and the
directors, employees and other agents of MediaOne and the MediaOne
Subsidiaries to, cease immediately and cause to be terminated all activities,
discussions or negotiations, if any, with any Persons conducted prior to the
date hereof with respect to any Acquisition Proposal.

               Section 6.4.  Redemption of Preferred Stock.  As promptly as it
is permitted to do so under the terms thereof, MediaOne will call for
redemption and redeem the MediaOne Series C Preferred Stock and the MediaOne
Series D Preferred Stock in accordance with the terms thereof.

               Section 6.5.  Channel Launches.  MediaOne agrees to consult with
Comcast regarding its plans and overall strategy for channel launches.


                                   ARTICLE 7
                             Covenants of Comcast

               Comcast agrees that:

               Section 7.1.  Comcast Interim Operations.  Except as set forth
in the Comcast Disclosure Schedule or as otherwise expressly contemplated
hereby, without the prior consent of MediaOne, from the date hereof until the
Effective Time, Comcast shall, and shall cause each of the Comcast
Subsidiaries to, conduct their business in all material respects in the
ordinary course consistent with past practice and use all reasonable efforts
to (i) preserve intact its present business organization, (ii) keep available
the services of its key officers and key employees, (iii) maintain in effect
all material foreign, federal, state and local licenses, approvals and
authorizations, including, without limitation, all material licenses and
permits that are required for Comcast or any Comcast Subsidiary to carry on
its business and (iv) preserve existing relationships with its material
partners, lenders, suppliers and others having material business relationships
with it so that the business of Comcast and the Comcast Subsidiaries shall not
be impaired in any material respect at the Effective Time.  Without limiting
the generality of the foregoing, except as set forth in the Comcast Disclosure
Schedule or as otherwise expressly contemplated by this Agreement, from the
date hereof until the Effective Time, without the prior written consent of
MediaOne, Comcast shall not, nor shall it permit any Comcast Subsidiary to:

                 (a)  amend Comcast's articles of incorporation or by-laws;

                 (b)  amend any material terms of any of its outstanding
securities;

                 (c)  split, combine, subdivide or reclassify any shares of
Comcast's capital stock or declare, set aside or pay any dividend or other
distribution (whether in cash, stock or property or any combination thereof)
in respect of Comcast's capital stock, or redeem, repurchase or otherwise
acquire or offer to redeem, repurchase, or otherwise acquire any of Comcast's
securities, except for (i) the April 20 Dividend, (ii) a quarterly cash
dividend having a record date of March 4, 1999 in the amount of (A) $.0233 per
share of Comcast Class A Common Stock, (B) $.0233 per share of Comcast Class B
Common Stock and (C) $.0233 per share of Comcast Common Stock, (ii) regular
dividends on outstanding preferred stock pursuant to the terms of such
securities and (iii) dividends paid by any Comcast Subsidiary to Comcast or
any Comcast Subsidiary that is, directly or indirectly, wholly owned by
Comcast;

                 (d)  take any action that would or would be reasonably likely
to prevent or materially impair the ability of MediaOne to consummate the
transactions contemplated by this Agreement;

                 (e)  issue, deliver or sell, or authorize the issuance,
delivery or sale of, any shares of its capital stock of any class or any
securities convertible into or exercisable for, or any rights, warrants or
options to acquire, any such capital stock, other than (i) the issuance of
shares of common stock of Comcast upon the exercise of stock options in
accordance with their present terms, (ii) issuances pursuant to the conversion
of convertible securities outstanding on the date hereof and (iii) the
granting of options to acquire shares of common stock of Comcast in the
ordinary course of business consistent with past practice;

                 (f)  change (i) its methods of accounting or accounting
practices in any material respect except as required by concurrent changes in
U.S. GAAP or by law or (ii) its fiscal year;

                 (g)  enter into or acquire any new line of business that (i)
is material to the Comcast Group taken as a whole and (ii) is not closely
related to the provision of broadband communications services or the provision
of programming content;

                 (h)  take any action that would result in Comcast ceasing to
control Quick or ceasing to consolidate Quick for accounting purposes;

                 (i)  incur indebtedness outside of the ordinary course or for
acquisitions unless, in the reasonable judgment of Comcast, such incurrence is
not reasonably likely to result in the rating accorded Comcast's senior debt
by Moody's Investor's Service and Standard & Poor's Rating Services to be
non-investment grade;

                 (j)  engage in any (i) merger, consolidation, share exchange,
business combination, reorganization, recapitalization or other similar
transaction unless the shareholders of Comcast prior to such transaction own,
directly or indirectly, a majority of the equity interests in the surviving or
resulting corporation, (ii) transaction as a result of which any third party
acquires, directly or indirectly, an equity interest representing greater than
25% of the voting securities of Comcast or any Comcast Significant Subsidiary
(other than Comcast Teleport, Inc.) or (iii) disposition, directly or
indirectly, of assets, securities or ownership interests representing an
amount equal to or greater than 10% of the basic cable subscribers of the
Comcast Group, other than the transactions contemplated by this Agreement or
permitted pursuant to Section 7.1 hereof or asset swaps (unless such asset
swaps, together with other dispositions,  result in a 10% decrease in the
basic cable subscribers of the Comcast Group);

                 (k)  take any action that would make any representation or
warranty of Comcast hereunder inaccurate in any respect at the Effective Time;
or

                 (l)  agree or commit to do any of the foregoing.

               Section 7.2.  Comcast Stockholders' Meeting.  Comcast shall
cause the Comcast Stockholders' Meeting to be duly called and held as soon as
reasonably practicable for the purpose of voting on approval (the "Comcast
Stockholders' Approval") of the issuance of shares of Comcast Common Stock in
the Merger and the amendment to the articles of incorporation of Comcast
contemplated by Section 2.3 hereof.  The Board of Directors of Comcast shall
recommend approval of the issuance of Comcast Common Stock in the Merger by
Comcast's stockholders and, if necessary, the amendment to the articles of
incorporation of Comcast contemplated by Section 2.3 hereof.

               Section 7.3.  Director and Officer Liability. (a) The Surviving
Corporation shall indemnify and hold harmless and advance expenses to the
present and former officers, directors and employees of MediaOne and the
MediaOne Subsidiaries, and each person who prior to the Effective Time becomes
an officer, director or employee of MediaOne (each an "Indemnified Person"),
in respect of acts or omissions  by them in their capacities as such occurring
at or prior to the Effective Time (including, without limitation, for acts or
omissions occurring in connection with this Agreement and the consummation of
the transactions contemplated hereby) to the same extent provided under
MediaOne's certificate of incorporation and bylaws in effect on the date
hereof ("Indemnified Losses"); provided that such indemnification shall be
subject to any limitation imposed from time to time under applicable law.
Without limiting the generality of the foregoing, the Indemnified Losses shall
include reasonable costs of prosecuting a claim under this Section 7.3(a).
The Surviving Corporation shall periodically advance or reimburse each
Indemnified Person for all reasonable fees and expenses of counsel constituting
Indemnified Losses as such fees and expenses are incurred; provided that such
Indemnified Person shall agree to promptly repay to the Surviving Corporation
the amount of any such reimbursement if it shall be judicially determined by
judgment or order not subject to further appeal or discretionary review that
such Indemnified Person is not entitled to be indemnified by the Surviving
Corporation in connection with such matter.  In the event that the Surviving
Corporation sells, transfers or leases all or substantially all of its assets
or is not a surviving corporation in any merger, consolidation or other
business combination in which it may enter with any Person, the Surviving
Corporation shall, as a condition of any such transaction, cause such
purchaser or such surviving corporation, as the case may be, to assume the
Surviving Corporation's obligations under this Section 7.3 upon the
consummation of any such transaction.

               (b) For six years after the Effective Time, the Surviving
Corporation shall provide officers' and directors' liability insurance in
respect of acts or omissions occurring prior to the Effective Time (including,
without limitation, for acts or omissions occurring in connection with this
Agreement and the consummation of the transactions contemplated hereby)
covering each such Indemnified Person currently covered by MediaOne's
officers' and directors' liability insurance policy on terms with respect to
coverage and amount (including with respect to the payment of attorney's fees)
no less favorable than those of such policy in effect on the date hereof
(which policy has been provided by MediaOne to Comcast); provided that if the
aggregate annual premiums for such insurance during such period shall exceed
300% of the per annum rate of premium paid by MediaOne as of the date hereof
for such insurance, then the Surviving Corporation shall provide a policy with
the best coverage as shall then be available at 300% of such rate.

               (c)  The rights of each Indemnified Person and its heirs and
legal representatives under this Section 7.3 shall be in addition to any
rights such Person may have under the certificate of incorporation or
bylaws of MediaOne or any MediaOne Subsidiary, or under Delaware Law or any
other applicable laws.  These rights shall survive consummation of the
Merger and are intended to benefit, and shall be enforceable by, each
Indemnified Person.

               Section 7.4.  Quotation of Stock.  Comcast shall use its best
efforts to cause (i) the shares of Comcast Common Stock and Comcast Series D
Preferred Stock to be issued in connection with the Merger and reserved for
issuance in connection with the Adjusted Options to be approved for quotation
on Nasdaq, subject to official notice of issuance and (ii) the securities of
MediaOne and the MediaOne Subsidiaries that are listed on the NYSE to continue
to be listed on the NYSE (or, at Comcast's election and to the extent
permitted under the terms of such securities, Nasdaq) following the Merger.

               Section 7.5.  Comcast Board of Directors.  Immediately prior to
the Effective Time, the Board of Directors of Comcast will take all necessary
action to expand the size of its Board of Directors by four members and to
appoint Mr. Charles M. Lillis (or, in the event Mr. Lillis is unable to serve,
such other person as may be designated by MediaOne and reasonably satisfactory
to Comcast) and three other persons who are currently serving as MediaOne
Directors and who are selected by MediaOne and reasonably satisfactory to
Comcast (such four persons, the "New Directors") to the Comcast Board of
Directors.  From the Effective Time until and including the second annual
meeting of the stockholders of Comcast taking place after the Effective Time,
(i) the Board of Directors of Comcast will nominate the New Directors for
reelection to the Comcast Board of Directors at each subsequent annual or
special meeting of the stockholders of Comcast at which the New Directors'
terms expire, (ii) at least one of the New Directors will be a member of each
committee of the Board of Directors of Comcast (and for so long as Mr. Lillis
is a New Director, he will be the New Director that is a member of the
executive and nominating committees) and (iii) the Comcast Board of Directors
shall establish a committee composed of the New Directors which committee
shall have the authority to make decisions as provided in Sections 7.03, 7.05
and 7.06 hereto and Section 5.3 of the Voting Agreement (the "New Directors
Committee").  If one or more of the New Directors is unable to serve during
such period, Mr. Lillis (or if he is no longer serving, the other remaining
New Directors by majority vote) will select a replacement or replacements
which shall be reasonably satisfactory to Comcast.  These rights shall survive
the consummation of the Merger and are intended to benefit, and shall be
enforceable by, the New Directors.

               Section 7.6.  Employee Matters.  (a) Comcast shall and shall
cause the Comcast Subsidiaries to:

                 (i)  honor the terms of all MediaOne Employee Plans, MediaOne
Benefit Arrangements and MediaOne International Plans, and cause the Surviving
Corporation and its Subsidiaries to pay the benefits required under the terms
of such plans and arrangements, in each case subject to Section 7.6(c);

                (ii)  until December 31, 2001 (the "Benefits Maintenance
Period"), with respect to employees of MediaOne or any of MediaOne
Subsidiaries at the Effective Time ("Transferred Employees"), provide a level
of employee benefits and aggregate compensation which is substantially
comparable in the aggregate to the level of employee benefits and aggregate
compensation provided by MediaOne and MediaOne Subsidiaries as of the
Effective Time (other than the benefits provided under any severance or
termination benefit plans and arrangements of MediaOne or any MediaOne
Subsidiary);

               (iii)  until the second anniversary of the Effective Time, to
continue, without any adverse change, each MediaOne and MediaOne Subsidiary
Severance Plan identified as such in the MediaOne Disclosure Schedule (as
amended in accordance with Section 6.1(p) of the MediaOne Disclosure
Schedule); and

                (iv)  until the fifth anniversary of the Effective Time (and
for the life of certain individuals as identified in the MediaOne Disclosure
Schedule), continue without adverse change the existing retiree medical,
dental and life insurance benefit plan coverage for Transferred Employees and
the retired employees of MediaOne and the employees and retired employees of
Time Warner Telecom who participate in the MediaOne Pension Plan and are
eligible to participate in the MediaOne retiree welfare benefit plans, each of
whom are currently, or during such period will become, eligible to receive
such benefits.

               (b)  If Transferred Employees are included in any benefit plan
or arrangement of Comcast or the Comcast Subsidiaries, including without
limitation, any plan or arrangement providing vacation benefits, the
Transferred Employees shall receive credit for service prior to the Effective
Time with MediaOne and the MediaOne Subsidiaries and their predecessors to the
same extent such service was counted under similar MediaOne Employee Plans,
MediaOne Benefit Arrangements and MediaOne International Plans for purposes of
determining eligibility to participate and vesting and benefit accrual (except
that with respect to benefit accrual, such service shall not be counted to the
extent that it would result in a duplication of benefits).  If Transferred
Employees or their dependents are included in any medical, dental or health
plan other than the plan or plans they participated in at the Effective Time
(a "Successor Plan"), any such Successor Plan shall not include pre-existing
condition exclusions, except to the extent such exclusions were applicable
under any similar MediaOne Employee Plan at the Effective Time.

               (c)  Except as otherwise specifically set forth above, nothing
contained herein shall be construed as requiring Comcast or any Comcast
Subsidiary to continue any specific Employee Plan, Benefit Arrangement or
International Plan, or to continue the employment of any specific person,
provided however that any changes that Comcast or any Comcast Subsidiary may
make to any such Employee Plan, Benefit Arrangement or International Plan are
permitted by the terms of the applicable Employee Plan, Benefit Arrangement or
International Plan and under any applicable law.


                                   ARTICLE 8
                       Covenants of Comcast and MediaOne

               The parties hereto agree that:

               Section 8.1.  Best Efforts.   (a) Subject to the terms and
conditions of this Agreement, MediaOne and Comcast will cooperate with each
other and use their best efforts to promptly (i) take, or cause to be taken,
all actions and to do, or cause to be done, all things necessary, proper or
advisable under applicable laws and regulations to consummate the transactions
contemplated by this Agreement as soon as practicable, including, without
limitation, preparing and filing as promptly as practicable all documentation
to effect all necessary filings, notices, petitions, statements,
registrations, submissions of information, applications and other documents,
(ii) obtain and maintain all approvals, consents, registrations, permits,
authorizations and other confirmations required to be obtained from any third
party that are necessary, proper or advisable to consummate the Merger and the
other transactions contemplated by this Agreement and (iii) obtain and
maintain waivers of all Purchase Rights (as defined below).  Subject to
applicable laws relating to the exchange of information, MediaOne and Comcast
shall have the right to review in advance, and to the extent practicable each
will consult the other on, all the information relating to MediaOne and the
MediaOne Subsidiaries or Comcast and the Comcast Subsidiaries, as the case may
be, that appears in any filing made with, or written materials submitted to,
any third party and/or any Governmental Authority in connection with the
Merger and the other transactions contemplated by this Agreement.  Within 30
days of the date hereof, MediaOne will provide to Comcast a list of all
Franchise Consents, all License Consents and all rights that any Person may
have under the terms of the MediaOne Franchises to purchase all or any portion
of a MediaOne System as a result of the transactions contemplated hereby
("Purchase Rights").

               (b)  In furtherance and not in limitation of the foregoing,
each of Comcast and MediaOne agrees to (i) make an appropriate filing of a
Notification and Report Form pursuant to the HSR Act with respect to the
transactions contemplated hereby as promptly as practicable and in any event
within ten Business Days of the date hereof, (ii) supply as promptly as
practicable any additional information and documentary material that may be
requested pursuant to the HSR Act and (iii) use best efforts to complete the
review process under the HSR Act to permit the consummation of the Merger
including, but not limited to, causing the expiration or termination of the
applicable waiting periods under the HSR Act as soon as practicable.

               Section 8.2.  Proxy Statement; Registration Statement.  (a) As
promptly as practicable after the execution of this Agreement, Comcast and
MediaOne shall prepare and file the Proxy Statement with the SEC, and Comcast
shall prepare and file the Registration Statement (in which the Proxy
Statement will be included) with the SEC.  Comcast and MediaOne shall use
their reasonable best efforts to cause the Registration Statement to become
effective under the 1933 Act as soon after such filing as practicable and to
keep the Registration Statement effective as long as is necessary to
consummate the Merger.  The Proxy Statement shall include the recommendation
of the Board of Directors of MediaOne in favor of approval and adoption of
this Agreement and the Merger, except to the extent the Board of Directors of
MediaOne shall have withdrawn or modified its approval or recommendation of
this Agreement as permitted by Section 6.2(b),  and the recommendation of the
Board of Directors of Comcast in favor of approval of the issuance of Comcast
Common Stock in the Merger and, if necessary, the amendment to the Comcast
articles of incorporation contemplated by Section 2.3 hereof. Comcast shall
use its reasonable best efforts to cause the Proxy Statement to be mailed to
its stockholders, and MediaOne shall use its reasonable best efforts to cause
the Proxy Statement to be mailed to its stockholders, in each case as promptly
as practicable after the Registration Statement becomes effective.  The
parties shall promptly provide copies, consult with each other and prepare
written responses with respect to any written comments received from the SEC
with respect to the Proxy Statement and the Registration Statement and advise
one another of any oral comments received from the SEC.  The Registration
Statement and the Proxy Statement shall comply as to form in all material
respects with the rules and regulations promulgated by the SEC under the 1933
Act and the 1934 Act, respectively.

               (b)  Comcast and MediaOne shall make all necessary filings with
respect to the Merger and the transactions contemplated thereby under the 1933
Act and the 1934 Act and applicable state blue sky laws and the rules and
regulations thereunder.  Each party will advise the other, promptly after it
receives notice thereof, of the time when the Registration Statement has
become effective or any supplement or amendment has been filed, the issuance
of any stop order, the suspension of the qualification of the Comcast Common
Stock issuable in connection with the Merger for offering or sale in any
jurisdiction, or any request by the SEC for amendment of the Proxy Statement
or the Registration Statement or comments thereon and responses thereto or
requests by the SEC for additional information.  No amendment or supplement
to the Proxy Statement or the Registration Statement shall be filed without the
approval of both parties hereto, which approval shall not be unreasonably
withheld or delayed.  If at any time prior to the Effective Time, any
information relating to Comcast or MediaOne, or any of their respective
Affiliates, officers or directors, should be discovered by Comcast or MediaOne
that should be set forth in an amendment or supplement to the Registration
Statement or the Proxy Statement, so that such documents would not include any
misstatement of a material fact or omit to state any material fact necessary
to make the statements therein, in 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
Comcast and MediaOne.

               Section 8.3.  Public Announcements.  So long as this Agreement
is in effect, MediaOne and Comcast will consult with each other before issuing
any press release or making any public statement with respect to this
Agreement or the transactions contemplated hereby and, except as may be
required by applicable law or any listing agreement with any national
securities exchange, will not issue any such press release or make any such
public statement without the prior consent of the other party, which consent
shall not be unreasonably withheld.  Notwithstanding the foregoing, any such
press release or public statement as may be required by applicable law or any
listing agreement with any national securities exchange or Nasdaq may be issued
without such consent, if the party making such release or statement has used
its reasonable efforts to consult with the other party.

               Section 8.4.  Further Assurances.  At and after the Effective
Time, the officers and directors of the Surviving Corporation will be
authorized to execute and deliver, in the name and on behalf of MediaOne, any
deeds, bills of sale, assignments or assurances and to take and do, in the
name and on behalf of MediaOne, any other actions and things to vest, perfect
or confirm of record in the Surviving Corporation any and all right, title and
interest in, to and under any of the rights, properties or assets of MediaOne
acquired or to be acquired by the Surviving Corporation as a result of, or in
connection with, the Merger.

               Section 8.5.  Access to Information.  From the date hereof
until the Effective Time or earlier termination of this Agreement and subject
to applicable law and the Confidentiality Agreement, each of MediaOne and
Comcast shall (i) give to the other party and the other party's counsel,
financial advisors, auditors and other authorized representatives reasonable
access during normal business hours to the offices, properties, books and
records of such party and its Subsidiaries (and, in the case of MediaOne, to
the offices, properties, books and records of TWE and the TWE Subsidiaries to
the extent it is reasonably able to provide such access), (ii) furnish to the
other party and the other party's counsel, financial advisors, auditors and
other authorized representatives such financial and operating data and other
information as such Persons may reasonably request and (iii) instruct its
employees, counsel, financial advisors, auditors and other authorized
representatives to cooperate with the other party in such other party's
investigation.  Any investigation pursuant to this Section 8.5 shall be
conducted in such manner as not to interfere unreasonably with the conduct of
the business of the other party.  No information or knowledge obtained in any
investigation pursuant to this Section 8.5 shall affect or be deemed to modify
any representation or warranty made by any party hereunder.  Each party will
hold such information which is non-public in confidence in accordance with the
provisions of the Confidentiality Agreement.

               Section 8.6.  Notices of Certain Events.  Each of MediaOne and
Comcast shall promptly notify the other of:

                 (a)  any notice or other communication from any Person
alleging that the consent of such Person is or may be required in connection
with the transactions contemplated by this Agreement;

                 (b)  any notice or other communication from any Governmental
Authority in connection with the transactions contemplated by this Agreement;

                 (c)  the occurrence, or non-occurrence, of any event the
occurrence, or non-occurrence, of which would be reasonably expected to  cause
any representation or warranty contained herein to be untrue or inaccurate in
any material respect at any time during the period commencing on the date
hereof and ending at the Effective Time; and

                 (d)  any failure of such party to comply with or satisfy any
covenant, condition or agreement to be complied with or satisfied by it
hereunder;

               provided, however, that the delivery of any notice pursuant to
this Section 8.6 shall not limit or otherwise affect the remedies available
hereunder to the party receiving such notice.

               Section 8.7.  Tax-free Reorganization.  (a) Prior to the
Effective Time, each party shall use its best efforts to cause the Merger to
qualify as a reorganization within the meaning of the provisions of Section
368(a) of the Code ("368 Reorganization"), and will not take any action
reasonably likely to cause the Merger not to so qualify.  Comcast shall not
take, or cause MediaOne to take, any action after the Effective Time
reasonably likely to cause the Merger not to qualify as a 368 Reorganization.

               (b)  Each party shall use its best efforts to obtain the opinions
referred to in Sections 9.2(b), 9.2(c), 9.3(b), and 9.3(c).

               Section 8.8.  Affiliates.  (a) Within 30 days following the
date of this Agreement, MediaOne shall deliver to Comcast a letter identifying
all known Persons who may be deemed affiliates of MediaOne under Rule 145 of
the 1933 Act (a "MediaOne Rule 145 Affiliate").  MediaOne shall use its best
efforts to obtain a written agreement from each MediaOne Rule 145 Affiliate
as soon as practicable and, in any event, at least 30 days prior to the
Effective Time, substantially in the form of Exhibit B hereto.

               Section 8.9.  TWE Termination Notice.  At any time after the
date upon which the MediaOne Stockholders' Approval shall have been obtained,
either MediaOne or Comcast may elect by written notice (a "Termination Notice
Election") to the other to have MediaOne give a Termination Notice (as defined
in Section 5.5(f) of the TWE Partnership Agreement).  In addition, MediaOne
may exercise the Termination Notice Election at any time after the 90th day
after the date hereof.  If either party exercises the Termination Notice
Election, then within five days of the date of such election, MediaOne shall
give the Termination Notice in accordance with the TWE Agreements.

               Section 8.10.  Assumption of Certain Obligations.  At the
Effective Time, the Surviving Corporation shall assume all of MediaOne's
rights and obligations under all of the agreements to which MediaOne is a
party as of the Effective Time, including without limitation, the Separation
Agreement between MediaOne and U S WEST dated as of June 5, 1998, the Employee
Matters Agreement between MediaOne and U S WEST dated as of June 5, 1998, and
the Tax Sharing Agreement between MediaOne and US WEST dated as of June 5,
1998 (collectively, the "U S WEST Agreements") and shall execute such
instruments of assumption as may be reasonably required under the terms of the
U S WEST Agreements and such other agreements.


                                   ARTICLE 9
                           Conditions to the Merger

               Section 9.1.  Conditions to the Obligations of Each Party.  The
obligations of MediaOne and Comcast to consummate the Merger are subject to
the satisfaction of the following conditions:

                 (a)  each of the MediaOne Stockholders' Approval and the
Comcast Stockholders' Approval shall have been obtained;

                 (b)  any applicable waiting period under the HSR Act relating
to the Merger shall have expired or been terminated;

                 (c)  no provision of any applicable law or regulation and no
judgment, injunction, order or decree shall prohibit the consummation of the
Merger;

                 (d)  the Registration Statement shall have been declared
effective and no stop order suspending the effectiveness of the Registration
Statement shall be in effect and no proceedings for such purpose shall be
pending before or threatened by the SEC;

                 (e)  the shares of Comcast Common Stock to be issued in the
Merger shall have been approved for quotation on Nasdaq, subject to official
notice of issuance;

                 (f)  if a Termination Notice has been delivered, one year
shall have elapsed from the date upon which MediaOne delivers a Termination
Notice to TW;

                 (g)  all License Consents, Social Contract Consents, Franchise
Consents and other consents and waivers, including waivers of all Purchase
Rights, shall have been obtained, be in effect and be subject to no
limitations, conditions, restrictions or obligations, except for such consents
the failure to obtain would not, and such limitations, conditions,
restrictions or obligation as would not, individually or in the aggregate, be
reasonably expected to have MediaOne Material Adverse Effect; and

                 (h)  no court, arbitrator or Governmental Authority shall have
issued any order, and there shall not be any statute, rule or regulation
restraining or prohibiting the effective operation of the business of Comcast
and the Comcast Subsidiaries or MediaOne and the MediaOne Subsidiaries after
the Effective Time that would be reasonably expected to have a MediaOne
Material Adverse Effect or a Comcast Material Adverse Effect.

               Section 9.2.  Conditions to the Obligations of Comcast.  The
obligations of Comcast to consummate the Merger are subject to the
satisfaction of the following further conditions:

                 (a)   (i) MediaOne shall have performed in all material
respects all of its obligations hereunder required to be performed by it at or
prior to the Effective Time, (ii) the representations and warranties of
MediaOne contained in this Agreement and in any certificate or other writing
delivered by MediaOne pursuant hereto, disregarding all qualifications and
exceptions contained therein relating to materiality or a MediaOne Material
Adverse Effect or any similar standard or qualification, shall be true and
correct at and as of the Effective Time, as if made at and as of such time
(other than representations or warranties that address matters only as of a
certain date which shall be true and correct as of such date), with only such
exceptions as, individually or in the aggregate, have not had and would not be
reasonably expected to have MediaOne Material Adverse Effect, and (iii)
Comcast shall have received a certificate signed by an executive officer of
MediaOne to the foregoing effect;

                 (b)  Comcast shall have received an opinion of Davis Polk &
Wardwell in form and substance reasonably satisfactory to Comcast, on the
basis of certain facts, representations and assumptions set forth in such
opinion, dated the Effective Time, to the effect that the Merger will be
treated for federal income tax purposes as a 368 Reorganization and that each
of Comcast and MediaOne will be a party to the reorganization within the
meaning of Section 368(b) of the Code.  In rendering such opinion, such
counsel shall be entitled to rely upon certain documentation including
representations of officers of MediaOne and Comcast; and

                 (c)  Comcast shall have received an opinion of Davis Polk &
Wardwell dated the Effective Time to the effect that the Merger pursuant to
this Agreement should not cause the spinoff of U S WEST on June 12, 1998 (the
"Spinoff") to fail to be qualified as a tax-free transaction under Section
355(a) and (c) of the Code.  In rendering such opinion, Davis Polk & Wardwell
shall be entitled to rely upon certain documentation, including
representations of officers of MediaOne and Comcast.

               Section 9.3.  Conditions to the Obligations of MediaOne.  The
obligations of MediaOne to consummate the Merger are subject to the
satisfaction of the following further conditions:

                 (a)  (i) Comcast shall have performed in all material respects
all of its obligations hereunder required to be performed by it at or prior to
the Effective Time, (ii) the representations and warranties of Comcast
contained in this Agreement and in any certificate or other writing delivered
by Comcast pursuant hereto disregarding all qualifications and exceptions
contained therein relating to materiality or Comcast Material Adverse Effect
or any similar standard or qualification shall be true at and as of the
Effective Time as if made at and as of such time (other than representations
and warranties that address matters only as of a certain date, which shall be
true as of such date), with only such exceptions as, individually or in the
aggregate, have not had and would not be reasonably expected to have a Comcast
Material Adverse Effect and (iii) MediaOne shall have received a certificate
signed by an executive officer of Comcast to the foregoing effect;

                 (b)  MediaOne shall have received an opinion of Weil, Gotshal
& Manges LLP in form and substance reasonably satisfactory to MediaOne, on the
basis of certain facts, representations and assumptions set forth in such
opinion, dated the Effective Time, to the effect that the Merger will be
treated for federal income tax purposes as a 368 Reorganization and that each
of Comcast and MediaOne will be a party to the reorganization within the
meaning of Section 368(b) of the Code.  In rendering such opinion, such
counsel shall be entitled to rely upon certain documentation including
representations of officers of MediaOne and Comcast; and

                 (c)  MediaOne shall have received an opinion of Weil, Gotshal
& Manges LLP dated the Effective Time to the effect that the Merger pursuant
to this Agreement should not cause the Spinoff to fail to be qualified as a
tax-free transaction under Section 355(a) and (c) of the Code.  In rendering
such opinion Weil, Gotshal & Manges LLP shall be entitled to rely upon certain
documentation, including representations of officers of MediaOne and Comcast.


                                  ARTICLE 10
                                  Termination

               Section 10.1.  Termination.  This Agreement may be terminated
and the Merger may be abandoned at any time prior to the Effective Time
(notwithstanding any approval of this Agreement by the stockholders of
MediaOne):

                 (a)  by mutual written agreement of MediaOne and Comcast;

                 (b)  by either MediaOne or Comcast, if:

                       (i) the Merger has not been consummated on or before
                 March 31, 2000 (the "End Date"); provided that if (A) the
                 Effective Time has not occurred by March 31, 2000 by
                 reason of the non-satisfaction of any of the conditions
                 set forth in Sections 9.1(b), 9.1(c), 9.1(f), 9.1(g), and
                 9.1(h) and (B) all other conditions in Article 9 have
                 theretofore been satisfied or waived or are then capable
                 of being promptly satisfied, the End Date will be December
                 31, 2000; and provided further that the right to terminate
                 this Agreement pursuant to this Section 10.1(b)(i) shall
                 not be available to any party whose breach of any
                 provision of this Agreement results in the failure of the
                 Merger to be consummated by the End Date;

                      (ii) (A) there shall be any law or regulation that makes
                 consummation of the Merger illegal or otherwise prohibited
                 or (B) any judgment, injunction, order or decree of any
                 court or other Governmental Authority having competent
                 jurisdiction enjoining MediaOne and Comcast from
                 consummating the Merger is entered and such judgment,
                 injunction, judgment or order shall have become final and
                 non-appealable;

                     (iii)  MediaOne Stockholders' Approval shall not have
                 been obtained at the MediaOne Stockholders' Meeting (or
                 any adjournment or postponement thereof); or

                      (iv)  Comcast Stockholders' Approval shall not have been
                 obtained at the Comcast Stockholders' Meeting (or any
                 adjournment or postponement thereof);

                 (c)  by Comcast if:

                       (i)  the Board of Directors of MediaOne shall have
                 failed to recommend or withdrawn, or modified in a manner
                 adverse to Comcast, its approval or recommendation of this
                 Agreement, or shall have failed to call the MediaOne
                 Stockholders' Meeting in accordance with Section 6.2(a)
                 (or the Board of Directors of MediaOne resolves to do any
                 of the foregoing);

                      (ii)  MediaOne shall have willfully and materially
                 breached any of its obligations under Sections 6.2(b) or
                 6.3; or

                     (iii)  a breach of any representation, warranty, covenant
                 or agreement on the part of MediaOne set forth in this
                 Agreement shall have occurred that would cause the
                 condition set forth in Section 9.2(a) not to be satisfied,
                 and such condition shall be incapable of being satisfied
                 by the End Date; or

                 (d)  by MediaOne, if:

                       (i)  Comcast shall have failed to call the Comcast
                 Stockholders' Meeting in accordance with Section 7.2 or
                 Comcast Stockholder shall have materially and willfully
                 breached the Voting Agreement;

                      (ii)  a breach of any representation, warranty, covenant
                 or agreement on the part of Comcast set forth in this
                 Agreement shall have occurred that would cause the
                 condition set forth in Section 9.3(a) not to be satisfied,
                 and such condition shall be incapable of being satisfied
                 by the End Date; or

                     (iii)  (A) the Board of Directors of MediaOne authorizes
                 MediaOne, subject to complying with the terms of this
                 Agreement, to enter into a binding written agreement
                 concerning a transaction that constitutes a Superior
                 Proposal and MediaOne notifies Comcast in writing that it
                 intends to enter into such an agreement, attaching the
                 most current version of such agreement to such notice
                 (which version shall be updated on a current basis);  (B)
                 Comcast does not make, within five days (or, in the case
                 of any notification with respect to a given Third Party,
                 other than the initial notification, three days) of
                 receipt of MediaOne's written notification of its
                 intention to enter into a binding agreement for a Superior
                 Proposal, an offer that the Board of Directors of MediaOne
                 determines, in good faith after consultation with its
                 financial advisors, is at least as favorable to the
                 stockholders of MediaOne as the Superior Proposal;  (C)
                 MediaOne prior to such termination pursuant to this clause
                 (iii) pays to Comcast in immediately available funds the
                 fees required to be paid pursuant to Section 10.3(c);  (D)
                 such termination takes place no later than the last day of
                 the Initial Period and (E)  MediaOne shall have complied
                 with Section 6.3.  MediaOne agrees to notify Comcast
                 promptly if its intention to enter into a written
                 agreement referred to in its notification shall change at
                 any time after giving such notification.

               The party desiring to terminate this Agreement pursuant to this
Section 10.1 (other than pursuant to Section 10.1(a)) shall give notice of
such termination to the other party.

               Section 10.2.  Effect of Termination.  If this Agreement is
terminated pursuant to Section 10.1, this Agreement shall become void and of
no effect without liability of any party (or any stockholder, director,
officer, employee, agent, consultant or representative of such party) to the
other parties hereto, except that (a) the agreements contained in this Section
10.2, in Section 10.3 and in the Confidentiality Agreement shall survive the
termination hereof and (b) no such termination shall relieve any party of any
liability or damages resulting from any willful breach by such party of this
Agreement.

               Section 10.3.  Fees and Expenses.  (a) Except as otherwise
provided in this Section 10.3, all costs and expenses incurred in connection
with this Agreement shall be paid by the party incurring such cost or expense
whether or not the Merger is consummated; provided that MediaOne and Comcast
shall share equally all fees and expenses, other than attorneys' and
accounting fees and expenses, incurred in relation to the printing and filing
of the Registration Statement and the Proxy Statement.

               (b)  If this Agreement is terminated pursuant to Section
10.1(c)(i) or Section 10.1(c)(ii), MediaOne shall pay to Comcast a
termination fee of $1,500,000,000 in cash (the "Termination Fee").

               (c)  If this Agreement is terminated pursuant to Section
10.1(d)(iii), MediaOne shall pay to Comcast the Termination Fee.

               (d)  If this Agreement is terminated pursuant to Section
10.1(d)(i), Comcast shall pay to MediaOne the Termination Fee.

               (e)  If (A) this Agreement is terminated pursuant to Section
10.1(b)(iii), (B) prior to the MediaOne Stockholders' Meeting, an Acquisition
Proposal is made by any Person and not withdrawn prior to such meeting and (C)
within one year of the MediaOne Stockholders' Meeting, either (1) MediaOne or
any MediaOne Subsidiary enters into an agreement with any Person with respect
to an Acquisition Proposal which provides for (x) transfer or issuance of
securities representing more than 50% of the equity or voting interests in
MediaOne, (y) a merger, consolidation, recapitalization or another transaction
resulting in the issuance of cash or securities of any Person (other than a
reincorporation or a holding company merger that results in the MediaOne
stockholders owning all of the equity interests in the surviving corporation)
to MediaOne stockholders in exchange for more than 50% of the equity or voting
interests in MediaOne, or (z) transfer of assets, securities or ownership
interests representing more than 50% of the consolidated assets or earning
power of the MediaOne Group, or (2) any Person commences a tender offer that
results in the acquisition by the Person making the tender offer of a majority
of the MediaOne Common Stock, then MediaOne shall pay to Comcast the
Termination Fee.

               (f)  If this Agreement is terminated pursuant to Section
10.1(b)(iv),  Comcast shall pay to MediaOne the Termination Fee.

               (g)  Any payment of the Termination Fee pursuant to this Section
10.3 shall be made within one Business Day after termination of this Agreement
except that (i) any payment of the Termination Fee pursuant to Section 10.3(c)
shall be paid immediately prior to the termination of this Agreement and (ii)
any payment of the Termination Fee pursuant to Section 10.3(e) shall be paid
within one Business Day after it becomes payable.  Any payment of the
Termination Fee shall be made by wire transfer of immediately available funds.
If one party fails to pay to the other promptly any fee or expense due
hereunder (including the Termination Fee), the defaulting party shall pay the
costs and expenses (including legal fees and expenses) in connection with any
action, including the prosecution of any lawsuit or other legal action, taken
to collect payment, together with interest on the amount of any unpaid fee at
the publicly announced prime rate of The Bank of New York in New York City
from the date such fee was required to be paid to the date it is paid.



                                  ARTICLE 11
                                 Miscellaneous

               Section 11.1.  Notices.  All notices, requests and other
communications to any party hereunder shall be in writing (including facsimile
transmission) and shall be given,

               if to Comcast, to:

               Comcast Corporation
               1500 Market Street
               Philadelphia, Pennsylvania 19102
               Attention: General Counsel
               Fax: (215) 981-7794

               with a copy to:

               Davis Polk & Wardwell
               450 Lexington Avenue
               New York, New York 10017
               Attention: Dennis S. Hersch
               Fax: (212) 450-4800

               if to MediaOne, to:

               MediaOne Group, Inc.
               188 Inverness Drive West
               Englewood, Colorado 80112
               Attention: Frank M. Eichler
               Fax: (303) 858-5834

               with a copy to:

               Weil, Gotshal & Manges LLP
               767 Fifth Avenue
               New York, New York 10153
               Attention: Stephen M. Besen
               Fax: (212) 310-8007

or such other address or facsimile number as such party may hereafter specify
for the purpose by notice to the other parties hereto.  All such notices,
requests and other communications shall be deemed received on the date of
receipt by the recipient thereof if received prior to 5 p.m. on a Business Day,
in the place of receipt.  Otherwise, any such notice, request or communication
shall be deemed not to have been received until the next succeeding Business
Day in the place of receipt.

               Section 11.2.  Survival of Representations and Warranties.  The
representations and warranties contained herein and in any certificate or other
writing delivered pursuant hereto shall not survive the Effective Time or the
termination of this Agreement, except as provided under Section 10.2.

               Section 11.3.  Amendments; No Waivers.  (a) Subject to
applicable law, any provision of this Agreement may be amended or waived prior
to the Effective Time if, but only if, such amendment or waiver is in writing
and is signed, in the case of an amendment, by each party to this Agreement
or, in the case of a waiver, by each party against whom the waiver is to be
effective; provided that, after the adoption of this Agreement by the
stockholders of MediaOne, no such amendment or waiver shall be made or given
that requires the approval of the stockholders of MediaOne unless the required
approval is obtained.

               (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. The rights and
remedies herein provided shall be cumulative and not exclusive of any rights
or remedies provided by law.

               Section 11.4.  Successors and Assigns.  The provisions of this
Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns; provided that no party may assign,
delegate or otherwise transfer any of its rights or obligations under this
Agreement without the consent of each other party hereto.

               Section 11.5.  Governing Law.  This Agreement shall be governed
by and construed in accordance with the laws of the State of Delaware, without
regard to the conflicts of law rules of such State except that the effects of
the Merger under Pennsylvania Law shall be governed by Pennsylvania Law.

               Section 11.6.  Jurisdiction.  Any suit, action or proceeding
seeking to enforce any provision of, or based on any matter arising out of or
in connection with, this Agreement or the transactions contemplated hereby
shall be brought in any federal court located in the State of Delaware or any
Delaware state court, and each of the parties hereby consents to the exclusive
jurisdiction of such courts (and of the appropriate appellate courts therefrom)
in any such suit, action or proceeding and irrevocably waives, to the fullest
extent permitted by law, any objection that it may now or hereafter have to the
laying of the venue of any such suit, action or proceeding in any such court or
that any such suit, action or proceeding brought in any such court has been
brought in an inconvenient form.  Process in any such suit, action or
proceeding may be served on any party anywhere in the world, whether within
or without the jurisdiction of any such court.  Without limiting the foregoing,
each party agrees that service of process on such party as provided in Section
11.1 shall be deemed effective service of process on such party.

               Section 11.7.  WAIVER OF JURY TRIAL.  EACH OF THE PARTIES
HERETO HEREBY IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY
LEGAL PROCEEDING ARISING OUT OF OR RELATED TO THIS AGREEMENT OR THE
TRANSACTIONS CONTEMPLATED HEREBY.

               Section 11.8.  Counterparts; Effectiveness.  This Agreement may
be signed in any number of counterparts, each of which shall be an original,
with the same effect as if the signatures thereto and hereto were upon the same
instrument. This Agreement shall become effective when each party hereto shall
have received counterparts hereof signed by all of the other parties hereto.
No provision of this Agreement is intended to confer any rights, benefits,
remedies, obligations or liabilities hereunder upon any Person other than the
parties hereto and their respective successors and assigns except as provided
in Sections 7.3, 7.5 and 7.6.

               Section 11.9.  Entire Agreement.  This Agreement, together with
the Voting Agreement and the Confidentiality Agreement, constitutes the entire
agreement between the parties with respect to the subject matter of this
Agreement and supersedes all prior agreements and understandings, both oral
and written, between the parties with respect to the subject matter of this
Agreement.

               Section 11.10.  Captions.  The captions herein are included for
convenience of reference only and shall be ignored in the construction or
interpretation hereof.

               Section 11.11.  Severability.  If any term, provision, covenant
or restriction of this Agreement is held by a court of competent jurisdiction
or other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated
so long as the economic or legal substance of the transactions contemplated
hereby is not affected in any manner materially adverse to any party.  Upon
such a determination, the parties shall negotiate in good faith to modify this
Agreement so as to effect the original intent of the parties as closely as
possible in an acceptable manner so that the transactions contemplated hereby
be consummated as originally contemplated to the fullest extent possible.

               Section 11.12.  Specific Performance.  The parties hereto agree
that irreparable damage would occur if any provision of this Agreement were not
performed in accordance with the terms hereof and that the parties shall be
entitled to an injunction or injunctions to prevent breaches of this Agreement
or to enforce specifically the performance of the terms and provisions hereof
in any federal court located in the State of Delaware or any Delaware state
court, in addition to any other remedy to which they are entitled at law or in
equity.

               Section 11.13.  Schedules.  Each of MediaOne and Comcast has set
forth information in its respective Disclosure Schedule in a section thereof
that corresponds to the section of this Agreement to which it relates.  A
matter set forth in one section of the Disclosure Schedules need not be set
forth in any other section of the Disclosure Schedule so long as its relevance
to the latter section of the Disclosure Schedule or section of the Agreement
is apparent on the face of the information disclosed in the Disclosure
Schedule.  The fact that any item of information is disclosed in a Disclosure
Schedule to this Agreement shall not be construed to mean that such
information is required to be disclosed by this Agreement.  Such information
and the dollar thresholds set forth herein shall not be used as a basis for
interpreting the terms "material" or "Material Adverse Effect" or other
similar terms in this Agreement except as otherwise expressly set forth in
such Disclosure Schedules.

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


                                    MEDIAONE GROUP, INC.



                                    By: /s/ Charles M. Lillis
                                       ---------------------------------------
                                       Name:  Charles M. Lillis
                                       Title: President, Chief Executive
                                              Officer and Chairman


                                    COMCAST CORPORATION



                                    By: /s/ Brian L. Roberts
                                       ---------------------------------------
                                       Name: Brian L. Roberts
                                       Title: President


                                                                  EXHIBIT 99.1

Comcast Corporation logo                                   MediaOne Group logo


NEWS RELEASE

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

FOR IMMEDIATE RELEASE

             COMCAST AND MEDIAONE ANNOUNCE $60 BILLION MERGER

           MEDIAONE SHAREHOLDERS TO RECEIVE 1.1 COMCAST CLASS A
                 SPECIAL COMMON SHARES PER MEDIAONE SHARE

             Creates Leading Broadband Communications Company

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

     (Philadelphia, PA and Englewood, CO)  March 22, 1999 -- Comcast
Corporation (NASDAQ: CMCSK, CMCSA) and MediaOne Group, Inc. (NYSE: UMG)
announced today that the two companies have entered into a merger agreement
that combines the third and fourth largest domestic cable providers to
create the world's leading broadband communications provider.  The combined
Comcast/MediaOne will, on a pro forma basis, serve 11 million cable
customers with systems that pass over 18 million homes domestically.  On a
pro forma basis, the combined company would have generated over $8 billion
in 1998 revenues, EBITDA of approximately $2.4 billion and will be well
positioned to take advantage of the growing and dynamic broadband
communications industry.

     The merger agreement calls for each MediaOne shareholder to receive
1.1 shares of Comcast Class A Special Common Stock (CMCSK) for each
MediaOne share it owns, or $80.16 per share based on Comcast's closing
stock price of $72.875 on Friday, March 19th.  The stock-based
consideration represents a premium of approximately 32% to MediaOne's
closing price of $60.75.  Upon completion of the merger, MediaOne
shareholders will own approximately 64% of the equity of the combined
company.  The merger will be accounted for as a purchase by Comcast and
will be tax-free to MediaOne shareholders.  The boards of directors of both
companies have unanimously approved the transaction.

                                  -more-


                                    -2-

     Mr. Brian L. Roberts, President of Comcast, said, "This is a breathtaking
moment in the history of Comcast.  The combination of MediaOne and Comcast
will form a company with the most attractive assets in the industry, a
powerful balance sheet and an unmatched management team. The new company will
have the size and scope to lead the evolving broadband environment.  Our cable
properties are geographically complementary and should provide the opportunity
for meaningful revenue enhancement and operating synergies promptly after
closing."

     Mr.  Charles M.  Lillis, President, Chief Executive Officer and
Chairman of MediaOne, commented, "This transaction creates a company with a
unique combination of high growth domestic and international broadband,
programming and telephony businesses.  Together, we will be optimally
positioned to develop and provide nationally branded broadband services
across our principal business lines of video, voice and data.  Customers
will benefit from a broader and bundled service offering, while
shareholders and employees will have the opportunity to participate in the
growth of the combined entity."

The combined company will:
o  have a capitalization of almost $97 billion (market value of equity plus
   debt and preferred as of March 19, 1999)
o  have the best clustered and one of the largest broadband networks in the
   U.S. with 8 clusters, each with greater than 500,000 subscribers
o  pass over 18 percent of U.S. households with its existing cable
   infrastructure
o  serve over 11 million domestic cable customers hold valuable global
   telecommunications, programming and Internet interests
o  be strong financially, with little net debt

     The management team for the new company will be drawn from the leadership
teams of both MediaOne and Comcast.  Ralph J. Roberts will remain Chairman of
the combined company and Brian Roberts will remain President.  Chuck Lillis
will serve as a Vice Chairman of Comcast and join the Comcast Board of
Directors along with three additional MediaOne designees, bringing the total
number of directors to 14.

     The merger agreement is subject to the approvals of MediaOne and Comcast
shareholders as well as approvals from federal and local regulatory
authorities.  The companies anticipate that the merger will close by
approximately year-end.

     While the merger agreement prohibits MediaOne from soliciting competing
acquisition proposals, it has 45 days to accept a superior proposal, subject
to payment of a fee of $1.5 billion to Comcast.


                                  -more-

                                    -3-

     Salomon Smith Barney acted as financial advisor and provided a
fairness opinion to Comcast and Lehman Brothers Inc. acted as financial
advisor and provided a fairness opinion to MediaOne.  Comcast is being
represented by Davis Polk & Wardwell and MediaOne is being represented by
Weil Gotshal & Manges and Cadwalader Wickersham & Taft.

     Comcast Corporation (www.comcast.com) is principally engaged in the
development, management and operation of broadband cable networks and in
the provision of content through principal ownership of QVC, Comcast-
Spectacor and Comcast SportsNet, a controlling interest in E!
Entertainment Television and through other programming investments.
Comcast's Class A Special and Class A Common Stock are traded on The Nasdaq
Stock Market under the symbols CMCSK and CMCSA, respectively.

     MediaOne Group (www.mediaonegroup.com) is one of the world's largest
broadband communications companies, bringing the power of broadband and the
Internet to subscribers in the United States, Europe and Asia.  The company
also has interests in some of the fastest-growing wireless communications
businesses outside the U.S.  For 1998, the businesses that comprise
MediaOne Group produced $7.1 billion in proportionate revenue.

     This press release contains forward looking statements made pursuant
to the "safe harbor" provisions of the Private Securities Litigation Reform
Act of 1995.  You are cautioned that such forward looking statements
involve risks and uncertainties which could significantly affect expected
results in the future from those expressed in any such forward looking
statements made by, or on behalf of the Company.  Certain factors that
could cause actual results to differ materially include, without
limitation, the effects of legislative and regulatory changes; the
potential for increased competition; technological changes; the need to
generate substantial growth in the subscriber base by successfully
launching, marketing and providing services in identified markets; pricing
pressures which could affect demand for the Company's services; the
Company's ability to expand its distribution; changes in labor,
programming, equipment and capital costs; availability of debt and equity
financing; the Company's continued ability to create or acquire programming
and products that customers will find attractive; future acquisitions,
strategic partnerships and divestitures; general business and economic
conditions; and other risks detailed from time to time in the Company's
periodic reports filed with the Securities and Exchange Commission.

Contacts:

Comcast:                                     MediaOne:
John Alchin                                  Jane Okun
Senior Vice President                        Executive Director,
and Treasurer                                Investor Relations
215-981-7503                                 303-858-3696


Marlene Dooner                               Steve Lang
Senior Director of                           Executive Director, Financial
Investor Relations                           & Corporate Communications
215-981-7392                                 303-858-3406


Press:
Abernathy MacGregor Frank
Ann Hance/Adam Miller
212-371-5999




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