<PAGE>


                            REORGANIZATION AGREEMENT

     AGREEMENT, dated as of July 14, 1998, among TIME WARNER COMPANIES, INC., a
Delaware corporation ("TWX"), MEDIAONE GROUP, INC. (formerly U S WEST, INC.), a
Delaware corporation ("MediaOne"), ADVANCE/NEWHOUSE PARTNERSHIP, a New York
general partnership ("A/N"), TIME WARNER ENTERTAINMENT COMPANY, L.P., a Delaware
limited partnership ("TWE"), and TIME WARNER ENTERTAINMENT-ADVANCE/NEWHOUSE
PARTNERSHIP, a New York general partnership ("TWE-A/N").

                              W I T N E S S E T H:

     WHEREAS, TWX, MediaOne and certain of their respective subsidiaries are
parties to the Agreement of Limited Partnership of TWE, dated as of October 29,
1991, as amended (the "TWE Partnership Agreement"), pursuant to which the
parties thereto formed TWE;

     WHEREAS, TWE, A/N and PARAGON COMMUNICATIONS, a New York general
partnership all the interests of which are owned by subsidiaries of TWX and by
TWE ("Paragon"), are parties to the Partnership Agreement of TWE-A/N, dated as
of September 9, 1994, as amended (the "TWE-A/N Partnership Agreement"), pursuant
to which the parties thereto formed TWE-A/N;

     WHEREAS, TWE and TWE-A/N and TWX, through the Local Operating Entities (as
defined herein), are jointly engaged in a business which provides telephony
services to business customers in markets in which the cable television systems
of TWE, TWE-A/N and TWX are located (the "Time Warner Telecom Business");

     WHEREAS, the parties hereto desire to contribute the Time Warner Telecom
Business to a newly formed entity, distribute the equity of such entity to TWX,
MediaOne and A/N and effect a public debt offering of such entity;

     WHEREAS, TWE and MediaOne are parties to the Option Agreement, dated as of
September 15, 1993 (the "Option Agreement"), pursuant to which TWE has granted
to MediaOne an option to increase its partnership interest in TWE in certain
circumstances (the "Option");

     WHEREAS, in connection with the transactions contemplated hereby, TWE and
MediaOne desire to provide for certain adjustments to the terms of the Option;
and


<PAGE>
<PAGE>




     WHEREAS, the parties hereto are entering into this Agreement to effect the
foregoing transactions and certain other related transactions described herein
and to make certain representations and warranties and enter into certain
covenants and agreements in connection therewith.

     NOW, THEREFORE, in reliance upon the representations and warranties made
herein and in consideration of the mutual agreements herein contained, the
parties hereto hereby agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

     1.1. Definitions. For purposes of this Agreement, the following terms shall
have the meanings set forth below:

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

     "Agreement" shall mean this Reorganization Agreement, as it may be amended,
restated, modified or supplemented from time to time in accordance with its
terms.

     "Annualization Factor" means (a) with respect to any Threshold Telecom
Disposition occurring prior to the beginning of the two-year period referred to
in Section 3.1(a)(i), eight and (b) with respect to any Threshold Telecom
Disposition occurring during the two-year period referred to in Section
3.1(a)(i), the product of eight and a fraction the numerator of which is the
number of days from the date of such Threshold Telecom Disposition to the end of
such two-year period and the denominator of which is 730.

     "A Sub-Account" shall have the meaning ascribed to such term in the TWE
Partnership Agreement.

     "A Threshold" shall have the meaning ascribed to such term in the TWE
Partnership Agreement.

     "B Threshold" shall have the meaning ascribed to such term in the TWE
Partnership Agreement.

     "Cable EBITDA" shall have the meaning ascribed to such term in the Option
Agreement.



                                        2

<PAGE>
<PAGE>



     "Class A Partner" shall have the meaning ascribed to such term in the TWE
Partnership Agreement.

     "Common Partnership Units" shall have the meaning ascribed to such term in
the TWE-A/N Partnership Agreement.

     "Common Sub-Account" shall have the meaning ascribed to such term in the
TWE Partnership Agreement.

     "Company EBITDA" shall mean, for any period, the net income of the Company
or any successor of the Company, plus the sum of interest expense, income tax
expenses, depreciation and amortization (in each case, to the extent deducted in
determining such net income), determined in a manner consistent with the
calculation of Cable EBITDA. In determining Company EBITDA, the proportional
method of consolidation shall be used for all joint ventures and other interests
held by the Company or such successor.

     "Control Termination Date" shall mean the earlier of (i) the date on which
the TW Partners and the MediaOne Partner cease to collectively hold the right
pursuant to the LLC Agreement, Stockholders' Agreement or any successor
agreements to designate a majority of the Members' Committee or Board of
Directors of the Company or any successor of the Company or (ii) the date upon
which a sale of all or substantially all of the assets of the Company or any
successor of the Company is consummated.

     "Executive Committee" shall have the meaning ascribed to such term in the
TWE-A/N Partnership Agreement.

     "Gross Option Amount" shall have the meaning ascribed to such term in the
Option Agreement.

     "Governmental Authority" shall mean any foreign, Federal, state, municipal
or other governmental department, commission, board, bureau, agency or
instrumentality.

     "HSR Act" shall mean the Hart-Scott-Rodino Antitrust Improvements Act of
1976, as amended.

     "Local Operating Entities" shall mean the partnerships and corporations,
all of the interests of which are directly or indirectly owned by TWE, TWE-A/N
and TWX, through which the Time Warner Telecom Business is currently operated,
other than those specified on Schedule I hereto.



                                        3


<PAGE>
<PAGE>



     "Long Range Plan" shall mean the long range plan of the Time Warner Telecom
Business attached as Exhibit A hereto.

     "Management Committee" shall have the meaning ascribed to such term in the
TWE Partnership Agreement.

     "MediaOne Partner" shall mean MediaOne Group, Inc. (formerly U S WEST
Multimedia Communications, Inc.), a Colorado corporation.

     "Option Closing" shall have the meaning ascribed to such term in the Option
Agreement.

     "Option Entitlement" shall have the meaning ascribed to such term in the
Option Agreement.

     "Participating Percentage Share" shall have the meaning ascribed to such
term in the TWE Partnership Agreement.

     "Person" shall mean an individual, corporation, partnership, trust or
unincorporated organization or a government or any agency or political
subdivision thereof.

     "SAR Amount" shall have the meaning ascribed thereto in the Option
Agreement.

     "SAR Election" shall have the meaning ascribed thereto in the Option
Agreement.

     "Securities Act" shall mean the Securities Act of 1933, as amended.

     "Third Party" shall mean a party or parties un-Affiliated with any of the
parties hereto.

     "TWE-A/N Share" shall mean 57.5%.

     "TWE Initial Equity" shall mean (a) the Interests issued to TWE pursuant to
Section 2.1(c)(i) and 2.2(a)(i), (b) the shares of Class B Common Stock issued
in the Reconstitution in respect of the Interests issued to TWE pursuant to
Section 2.1(c)(i) and 2.2(a)(i), or (c) any equity securities of the Company or
any successor of the Company issued in respect of such Interests or shares of
Class B Common Stock (or Class A Common Stock received upon conversion thereof)
in connection with a merger, reorganization or other corporate transaction
involving the Company.



                                        4


<PAGE>
<PAGE>




     "TWE Option Share" shall mean, as of any date, the percentage which the TWE
Initial Equity represents of the issued and outstanding common equity of the
Company or any successor to the Company; provided, however, that the TWE Option
Share shall equal 74.02% as of any date from and after the Control Termination
Date. In calculating the "TWE Option Share" for all purposes of this Agreement
(other than for purposes of Sections 3.2 and 3.3(a) prior to the Control
Termination Date), there shall be excluded from the issued and outstanding
common equity of the Company the shares of Class A Common Stock issued by the
Company in the IPO Transaction.

     "TWE Share" shall mean 36.5%.

     "TW Partners" shall mean TWX, American Television and Communications
Corporation, a Delaware corporation, Warner Communications Inc., a Delaware
corporation, and TW/TAE Inc., a Delaware corporation.

     "TW/KBLCOM" shall mean FibrCOM Holdings L.P., a Delaware limited
partnership that is owned by TW/KBLCOM Inc., a Delaware corporation.

     "TWX Company Share" shall mean 6.0%.

     1.2 Terms Defined Elsewhere in the Agreement. For purposes of this
Agreement, the following terms shall have the meanings set forth in the sections
indicated:

<TABLE>
<CAPTION>


        Term                                                        Section
        ----                                                        -------
        <S>                                                         <C>

        Company.....................................................................2.1(a)
        Company Indebtedness........................................................2.1(b)
        Contribution................................................................2.1(a)
        Debt Percentage.............................................................3.1(b)
        Debt Registration Statement.................................................2.1
        Debt Transaction............................................................2.3
        Distribution................................................................2.2(a)
        Interests...................................................................2.1(c)
        IPO Transaction.............................................................2.4(a)
        Mandatory Prepayment........................................................3.1(c)
        MediaOne..................................................................recitals
        Option....................................................................recitals
        Option Agreement..........................................................recitals
        Paragon...................................................................recitals
        Successor Securities........................................................3.3(a)
        Time Warner Telecom Business..............................................recitals
        Time Warner Telecom Value...................................................3.4
        Threshold Telecom Acquisition...............................................3.1(b)

</TABLE>

                                        5


<PAGE>
<PAGE>


<TABLE>

        <S>                                                               <C>
        Threshold Telecom Disposition...............................................3.1(c)
        TWE.......................................................................recitals
        TWE Partnership Agreement.................................................recitals
        TWE-A/N...................................................................recitals
        TWE-A/N Partnership Agreement.............................................recitals
        TWX.......................................................................recitals
        Value Adjustment............................................................3.3(a)
</TABLE>

     1.3 Other Definitional Provisions. (a) The words "hereof", "herein", and
"hereunder" and words of similar import, when used in this Agreement, shall
refer to this Agreement as a whole and not to any particular provision of this
Agreement.

     (b) The terms defined in the singular shall have a comparable meaning when
used in the plural, and vice versa.

     (c) The terms "dollars" and "$" shall mean United States dollars.

                                   ARTICLE II

                       THE CONTRIBUTION; THE DISTRIBUTION;
                    THE DEBT TRANSACTION; THE IPO TRANSACTION

     2.1. The Contribution. (a) Immediately prior to the effectiveness of the
Registration Statement on Form S-1 with respect to the Debt Transaction (the
"Debt Registration Statement"), but subject to the conditions specified herein,
TWE, TWE-A/N and TWX shall contribute (the "Contribution") all of the assets and
liabilities of the Time Warner Telecom Business to TIME WARNER TELECOM LLC, a
newly formed Delaware limited liability company (the "Company"). The
Contribution shall be effected substantially in accordance with the transaction
steps specified in Exhibit B hereto.

     (b) It is agreed that all contributions or advances made by TWE, TWE-A/N
and TWX to the Local Operating Entities prior to July 1, 1997 were made in the
form of equity contributions and that all contributions and advances made (or
being made) by TWE, TWE-A/N and TWX to the Local Operating Entities from and
after July 1, 1997 were made (or are being made) in the form of loans. In
connection with the Contribution, existing indebtedness owed by the Local
Operating Entities to TWE, TWE-A/N and TWX not exceeding the applicable amount
set forth below (pro-rated on a monthly basis during a quarter) shall remain
outstanding (the "Company Indebtedness"):




                                        6


<PAGE>
<PAGE>

<TABLE>
<CAPTION>

               End of Fiscal Quarter in              Amount of Company
               which Contribution Occurs             Indebtedness
              ---------------------------           -------------------
<S>                                                 <C>

               First Quarter 1998                    $150 million
               Second Quarter 1998                   $180 million
               Third Quarter 1998                    $215 million
               Fourth Quarter 1998                   $260 million

</TABLE>

If the actual amount of indebtedness owed by the Local Operating Entities to
TWE, TWE-A/N and TWX as of the date of the Contribution exceeds the applicable
cap set forth above, then such excess indebtedness shall be funded by TWE,
TWE-A/N and TWX on a pro rata basis based upon the relative participation
percentages of their respective Interests.

     (c) In connection with the Contribution, the Company shall issue all of the
limited liability interests of the Company (each, an "Interest" and collectively
the "Interests") as follows:

          (i) TWE shall be issued an Interest having a participation percentage
     equal to the TWE Share.

          (ii) TWE-A/N shall be issued an Interest having a participation
     percentage equal to the TWE-A/N Share.

          (iii) TW/KBLCOM shall be issued an Interest having a participation
     percentage equal to the TWX Company Share.

     2.2. The Distribution. (a) Immediately following consummation of the
Contribution, the parties hereto shall cause the following transactions to occur
in the order set forth below (collectively, the "Distribution"):

     (i) TWE-A/N shall distribute 33.33% of the Interest which TWE-A/N receives
in connection with the Contribution to A/N, 65.26% of the Interest which TWE-A/N
receives in connection with the Contribution to TWE and 1.41% of the Interest
which TWE-A/N receives in connection with the Contribution to Paragon. Such
distributions shall be deemed to have been made in respect of the Common
Partnership Units of TWE, A/N and Paragon.

     (ii) TWE shall distribute all of the Interests which TWE receives in
connection with the Contribution and pursuant to the distribution contemplated
by Section 2.2(a)(i) to the MediaOne Partner and the TW Partners in accordance
with their respective Participating Percentage Shares. Such distributions shall
be deemed to have been made in respect of the Common Sub-Accounts of the
MediaOne Partner and the TW Partners. TWX, on behalf of itself and the TW
Partners, and MediaOne, on


                                       7


<PAGE>
<PAGE>



behalf of itself and the MediaOne Partner, acknowledge and agree that the
distributions contemplated by this Section 2.2(a)(ii) shall not be taken into
account in determining whether distributions to a Class A Partner and its
Affiliates equal or exceed the A Threshold or the B Threshold of such Class A
Partner for purposes of Article VIII of the TWE Partnership Agreement.

     (b) In connection with the Distribution the TW Partners, the MediaOne
Partner, A/N, Paragon and TWI/KBLCOM shall execute the LLC Agreement of the
Company, in the form attached as Exhibit C hereto (the "LLC Agreement").

     (c) The parties agree that the rights of TWE, TWE-A/N and TWX in respect of
the Company Indebtedness shall not be distributed by TWE-A/N or TWE to TWX,
MediaOne or A/N in connection with the Distribution.

     2.3. The Debt Transaction. Following the Distribution, the parties shall
cause the Company to effect an offering of debt securities of the Company (the
"Debt Transaction"). The execution of this Agreement shall be deemed to be an
agreement of the parties to effect the Debt Transaction. The terms of the Debt
Transaction, including, without limitation, the terms of the underwriting
arrangements and the pricing of any securities offered, shall be subject to the
approval of the Management Committee and the Executive Committee, and any such
approval shall bind the TW Partners, the MediaOne Partner, A/N, Paragon and
TW/KBLCOM. In connection with the Debt Transaction, the Company Indebtedness
shall remain outstanding and shall be evidenced by a promissory note of the
Company in the form of Exhibit D hereto, which shall be duly executed and
delivered by the Company concurrently with the Contribution.

     2.4. The IPO Transaction. (a) Following consummation of the Debt
Transaction, at such time as is determined in the manner required by the LLC
Agreement, the parties shall cause the Company to effect an initial public
offering of primary equity of the Company (the "IPO Transaction"). The terms of
the IPO Transaction, including, without limitation, the terms of the
underwriting arrangements and the pricing of any securities offered, shall be
determined as set forth in the LLC Agreement.

     (b) All or a portion of the proceeds received by the Company pursuant to
the IPO Transaction shall be used to repay the Company Indebtedness as set forth
in the promissory note evidencing such Company Indebtedness.



                                       8



<PAGE>
<PAGE>




                                   ARTICLE III

                              ADJUSTMENTS TO OPTION

     3.1. Cable EBITDA Adjustment. (a) From and after the consummation of the
Distribution, Cable EBITDA, for the two calendar years ending immediately prior
to the date of any exercise of the Option, shall be increased by an amount equal
to the sum of:

          (i) for the portion of such two year period, if any, commencing on the
     date the Distribution is effected, and ending prior to the Control
     Termination Date, the product of (x) the TWE Option Share multiplied by (y)
     the Company EBITDA for such period; plus

          (ii) for the portion of such two year period, if any, beginning on the
     Control Termination Date, the product of (x) the TWE Option Share
     multiplied by (y) the EBITDA of the Company set forth in the Long Range
     Plan for such period; provided, however, that if such period includes a
     portion of a calendar year, the EBITDA of the Company set forth in the Long
     Range Plan for such calendar year shall be appropriately prorated.

     (b) In the event that the Company makes an acquisition that would be
treated as a "Threshold Cable Acquisition" under the Option Agreement if it were
made by the Cable Division of TWE (a "Threshold Telecom Acquisition"), then, for
purposes of Section 3.1(a)(i), Company EBITDA shall be decreased by the
Adjustment Percentage (as defined in the Option Agreement) of any amounts
borrowed or deemed borrowed by the Company prior to or during the two year
period referred to in Section 3.1(a)(i) in order to make such Threshold Telecom
Acquisition (with the amount deemed borrowed being the net increase (up to the
purchase price of such Threshold Telecom Acquisition), within a 135-day period
prior to or subsequent to such Threshold Telecom Acquisition, in the amount of
any indebtedness of the Company); provided, however, that the amount by which
Company EBITDA shall be decreased in accordance with this sentence shall in no
event exceed the Debt Percentage of the Company EBITDA generated by the assets
or businesses that are the subject of such Threshold Telecom Acquisition during
such two year period. For purposes of the foregoing, (1) "Debt Percentage" shall
mean a fraction, the numerator of which is the amount borrowed or deemed
borrowed by the Company in order to make the Threshold Telecom Acquisition and
the denominator of which is the total value of the consideration paid in
connection with the Threshold Telecom Acquisition, (2) the total value of the
consideration paid in connection with a Threshold Telecom Acquisition shall mean
the sum of (A) the market value on the date of consummation of such Threshold
Telecom Acquisition of any securities or assets issued or transferred by the
Company in connection with such Threshold Telecom Acquisition, (B) the aggregate
amount of any cash paid by the Company in connection with such Threshold Telecom


                                       9



<PAGE>
<PAGE>




Acquisition and (C) the aggregate principal amount of any indebtedness assumed
by the Company in connection with such Threshold Telecom Acquisition and (3) in
determining the amount of Company EBITDA generated by the assets or businesses
that are the subject of such Threshold Telecom Acquisition, incremental
corporate overhead of the Company resulting from such Threshold Telecom
Acquisition shall be allocated to such assets or businesses and, to the extent
assets are co-mingled or shared, TWX and MediaOne shall negotiate in good faith
to agree on a methodology to determine the actual Company EBITDA generated by
such assets or businesses. It is acknowledged and agreed that the provisions of
this Section 3.1(b) shall only apply to the determination of Company EBITDA
pursuant to Section 3.1(a)(i) prior to the Control Termination Date and shall
not apply to the adjustments to Cable EBITDA contemplated by Section 3.1(a)(ii)
beginning on the Control Termination Date.

     (c) In the event that the Company makes a disposition (including a
distribution of the stock of a Subsidiary to its stockholders, but excluding a
disposition of all or substantially all of the assets of the Company or a
liquidating distribution), that would be treated as a "Threshold Cable
Disposition" under the Option Agreement if it were made by the Cable Division of
TWE (a "Threshold Telecom Disposition"), then, for purposes of Section
3.1(a)(i), Company EBITDA shall be increased by (x) the Adjustment Percentage of
any proceeds of such Threshold Telecom Disposition occurring prior to or during
the two-year period referenced in Section 3.1(a)(i) to the extent such proceeds
are used to make a Mandatory Prepayment (as defined below) or are distributed to
the Company's stockholders as a dividend or used to repurchase or redeem shares
of the Company's capital stock or (y) the Adjustment Percentage of the value of
the Subsidiary distributed to the Company's stockholders; provided, however,
that the amount by which Company EBITDA shall be increased in accordance with
this sentence shall in no event exceed the Annualization Factor times the actual
amount of Company EBITDA generated by the assets or businesses that are the
subject of such Threshold Telecom Disposition during the last full fiscal
quarter completed prior to the consummation of such Threshold Telecom
Disposition (accreted at a rate equal to the growth rate of the remaining
Company EBITDA during the relevant period), reduced by the amount of incremental
corporate overhead of the Company attributable to such assets or businesses. For
purposes of the foregoing, (1) a "Mandatory Prepayment" shall mean amounts used
to prepay outstanding indebtedness of the Company or any of its Subsidiaries
required to be prepaid under the terms of any indenture or loan agreement to
which the Company or any of its Subsidiaries is a party, to the extent so
applied within 180 days following consummation of such Threshold Telecom
Disposition and (2) the proceeds of a Threshold Telecom Disposition shall be
deemed to have been distributed to the Company's stockholders as a dividend or
used to repurchase or redeem shares of the Company's capital stock to the extent
the Company pays a dividend on its capital stock (other than regular cash
dividends in amounts comparable to amounts paid prior to the time of such
Threshold Telecom Disposition) or repurchases or redeems shares of its capital
stock within 180 days following the consummation of such Threshold Telecom
Disposition. It is acknowledged and agreed


                                       10



<PAGE>
<PAGE>



that the provisions of this Section 3.1(c) shall only apply to the determination
of Company EBITDA pursuant to Section 3.1(a)(i) prior to the Control Termination
Date and shall not apply to the adjustments to Cable EBITDA contemplated by
Section 3.1(a)(ii) beginning on the Control Termination Date.

     3.2. Determination of Gross Option Amount. From and after the Distribution,
the valuation of TWE as a going concern for purposes of determining the fair
market value of the partnership interest represented by the Gross Option Amount
under Section 2 of the Option Agreement shall be increased by an amount equal to
the product of (x) the TWE Option Share multiplied by (y) the Time Warner
Telecom Value (as defined below) as of the date of such valuation of TWE.

     3.3. Additional Value Delivery. (a) From and after the Distribution, the
Option shall be adjusted so that upon each exercise by MediaOne of the Option,
MediaOne shall be entitled to receive at the Option Closing additional value
(the "Value Adjustment") equal to the product of (x) the TWE Option Share
multiplied by (y) the Time Warner Telecom Value as of the last day of the
immediately preceding calendar year multiplied by (z) (A) if a SAR Election is
not made by MediaOne, the Option Entitlement (or if a portion of the Option is
exercised, such portion of the Option Entitlement) and (B) if a SAR Election is
made by MediaOne, the Participating Percentage Share represented by the SAR
Amount as determined pursuant to Section 2(e) of the Option Agreement (without
giving effect to any adjustments pursuant to Section 8 of the Option Agreement).
The Value Adjustment shall be payable by TWE, at the option of TWX, (i) in cash,
(ii) in Interests or shares of Class B Common Stock (or equity securities of a
successor to the Company or a Person which purchases the Company ("Successor
Securities")) owned by TWX or (iii) in additional partnership interests in TWE.

     (b) If TWX elects that the Value Adjustment be paid in Interests, shares of
Class B Common Stock or Successor Securities, (A) if shares of Class A Common
Stock or such Successor Securities are publicly traded at such time, such shares
of Class B Common Stock or Successor Securities shall be valued based upon the
average of the closing prices of the Class A Common Stock or such Successor
Securities for the ten trading days immediately prior to the Option Closing and
(B) the Interests and, if shares of Common Stock or such Successor Securities
are not publicly traded at such time, such shares of Class B Common Stock or
such Successor Securities, shall be valued as of the 10th day prior to the
Option Closing by an investment banking firm, which shall be selected by two
other investment banking firms, one selected by TWX and one selected by
MediaOne. Each of TWX and MediaOne shall instruct the investment banking firms
so selected to select the third investment banking firm within 30 days following
an exercise by MediaOne of the Option. The investment banking firm selected in
accordance with the foregoing procedure shall submit a written report setting
forth its determination of such value no



                                       11



<PAGE>
<PAGE>



later than 45 days after the date of its selection. The fees, costs and expenses
of the investment banking firms so selected shall be borne by TWE.

     (c) If TWX elects that the Value Adjustment be paid in additional
partnership interests in TWE, the Common Sub-Account and A Sub-Account of the
MediaOne Partner shall be increased by an amount representing a Participating
Percentage Share equal to the quotient of (x) the Value Adjustment divided by
(y) the fair market value of the portion of TWE represented by the aggregate A
Sub-Accounts and Common Sub-Accounts based on a valuation of TWE as a going
concern as determined in accordance with the procedures set forth in Section
2(a) of the Option Agreement, which amount shall be adjusted in a manner
consistent with Section 8 of the Option Agreement to give effect to the
dilution, if any, of the MediaOne Partner's existing Common Sub-Account and A
Sub-Account resulting from such increase (provided that such dilution adjustment
shall be made without giving effect to any additional partnership interests
issued to the MediaOne Partner upon exercise of the Option). Such issuances of
partnership interests in TWE shall be effected in accordance with Sections
7.2(a) and 8.2(c) of the TWE Partnership Agreement.

     3.4. Determination of Time Warner Telecom Value. As used in this Agreement,
"Time Warner Telecom Value" shall have the following meaning:

     (a) If the date of valuation is prior to the Control Termination Date,
"Time Warner Telecom Value" shall equal the private market value of the Company
or a successor to the Company as a going concern as determined by the investment
banking firm selected to determine the valuation of TWE as a going concern for
purposes of determining the Gross Option Amount under Section 2(a) of the Option
Agreement (which value shall equal the price at which all of the outstanding
equity of the Company or such successor could be sold on the date of such
valuation in a private transaction to an unrelated Third Party on an arms-length
basis, taking into account any control premium for the Company or such successor
as a whole).

     (b) If the date of valuation is after the Control Termination Date, "Time
Warner Telecom Value" shall equal the private market value of the Company as a
going concern on the date of the closing of the Distribution (which value shall
equal the price at which all of the outstanding equity of the Company could be
sold on the date of the closing of the Distribution in a private transaction to
an unrelated Third Party on an arms-length basis, taking into account any
control premium for the Company as a whole and prior to any "IPO discount")
accreted on a daily basis at a rate of 15% per annum from the closing of the
Distribution (compounded quarterly). Such value shall be as determined in the
following manner. Each of TWX and MediaOne shall select an investment banking
firm and shall instruct the investment banking firms so selected to select a
third investment banking firm within 30 days following the closing of the
Distribution. The investment banking firm selected in accordance with the
foregoing procedure shall submit a written report setting forth its


                                       12



<PAGE>
<PAGE>



determination of the value of such securities no later than 45 days after the
date of its selection. The fees, costs and expenses of the investment banking
firms so selected shall be borne by TWE.

     3.5. Certain Procedures for Option Exercise. In the event any dispute
arises as to any determination or calculation required to be made pursuant to
the Option Agreement or this Article III, TWE and MediaOne shall negotiate in
good faith to resolve such dispute as soon as practicable thereafter. In the
event TWE and MediaOne are unable to resolve any such dispute, such dispute
shall be resolved by a nationally recognized accounting firm selected jointly by
MediaOne and TWE which is not an accounting firm regularly employed by MediaOne
or TWE or their respective Affiliates. Such accounting firm shall inform the
disputing parties of its resolution of such dispute by delivering a written
report to TWE and MediaOne within 30 days after its selection. The decision of
such accounting firm with respect to such dispute shall be final and binding
upon TWE and MediaOne.

                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES

     Each of the parties hereto hereby represents and warrants to the other
parties hereto as follows:

     4.1. Organization. Such party is a corporation or partnership duly
organized, validly existing and in good standing under the laws of the
jurisdiction of its incorporation or organization and has all requisite
corporate or partnership power and authority to own and operate and to carry on
its business as currently conducted.

     4.2. Authorization. Such party has full corporate or partnership power and
authority to execute and deliver this Agreement, and to perform its obligations
hereunder. The execution, delivery and performance by such party of this
Agreement have been duly and validly authorized and no additional corporate or
partnership authorization or consent is required in connection with the
execution, delivery and performance by such party of this Agreement.

     4.3. Consents and Approvals. Except as specifically set forth in Schedule
4.3 or as required by the HSR Act, no consent, approval, waiver or authorization
is required to be obtained by such party from, and no notice or filing is
required to be given by such party to, or made by such party with, any federal,
state, local or other Governmental Authority or other Person in connection with
the execution, delivery and performance by such party of this Agreement.

     4.4. Non-Contravention. Except as set forth in Schedule 4.4, the execution,
delivery and performance by such party of this Agreement, and the 


                                       13



<PAGE>
<PAGE>



consummation of the transactions contemplated hereby, does not and will not (i)
violate any provision of the charter and bylaws or partnership agreement or
other organizational documents of such party or (ii) assuming compliance with
the matters set forth in Section 4.3, violate or result in a breach of or
constitute a default under any law of any court or Governmental Authority to
which such party is subject.

     4.5. Binding Effect. This Agreement constitutes a valid and legally binding
obligation of such party enforceable in accordance with its terms, subject to
bankruptcy, insolvency, reorganization, moratorium and similar laws of general
applicability relating to or affecting creditors' rights and to general equity
principles.

     4.6. No Other Representations or Warranties. Except as otherwise
specifically set forth herein, the Company acknowledges and agrees that it has
satisfied itself as to the state and condition of the assets of the Time Warner
Telecom Business. Except as otherwise specifically set forth herein, (i) the
Company accepts the condition of the assets and businesses of the Time Warner
Telecom Business AS IS AND WHERE IS, (ii) none of TWE, TWE-A/N, TWX, MediaOne or
A/N makes any express or implied representations, warranties or guarantees as to
the condition, extent, type or value thereof and (iii) the Company acknowledges
and agrees that TWE, TWE-A/N, TWX, MediaOne and A/N have made no such
representations or warranties. Without limiting the generality of the foregoing
words of exclusion, there are excluded, in particular, representations and
warranties by TWE, TWE-A/N, TWX, MediaOne and A/N as to title, quiet possession,
merchantable quality, fitness for any particular, or any, purpose and as to
description, as regards any asset of the Time Warner Telecom Business or the use
of any such asset by either the Company or any of its Subsidiaries following the
Contribution. The exclusions and limitations of liability in this Section 4.6
shall arise and continue notwithstanding the termination of this Agreement, and
shall operate as waivers by the Company and its Affiliates of any claims in tort
as well as under the law of contract. Such exclusions and limitations shall be
in addition to, not in substitution for, and notwithstanding any, right of
reimbursement or relief otherwise available to TWE, TWE-A/N, TWX, MediaOne or
A/N.

                                    ARTICLE V

                        CERTAIN COVENANTS AND AGREEMENTS

     5.1. Reasonable Best Efforts. (a) Subject to the terms and conditions of
this Agreement, each party shall use all reasonable best efforts to take, or
cause to be taken, all actions, and to do, or cause to be done, and to assist
and cooperate with the other parties in doing, all things necessary, proper or
advisable to consummate and make effective the transactions contemplated hereby,
including (i) the obtaining of all necessary actions or nonactions, waivers,
consents and approvals from Governmental Authorities and the making of all
necessary registrations and filings (including filings 


                                       14



<PAGE>
<PAGE>



with Governmental Authorities), if any and the taking of all reasonable steps as
may be necessary to obtain an approval or waiver from, or to avoid an action or
proceeding by, any Governmental Authorities), (ii) the obtaining of all
necessary consents, approvals or waivers from Third Parties and (iii) the
execution and delivery of any additional instruments necessary to consummate the
transactions contemplated hereby.

     (b) Without limiting the foregoing and notwithstanding anything to the
contrary in this Agreement, except as expressly set forth in the LLC Agreement
or the Stockholders' Agreement contemplated thereby, no party to this Agreement
shall be required to agree to any prohibition, limitation or other requirements,
including but not limited to (i) any prohibition or limitation on the ownership
or operation by such party or any of its Subsidiaries or Affiliates of any
portion of the business or assets of such party or any of its Subsidiaries or
Affiliates, or any prohibition or limitation that would compel such party or any
of its Subsidiaries or Affiliates to dispose of or hold separate any portion of
the business or assets of such party or any of its Subsidiaries or Affiliates,
(ii) any prohibition or limitation on the rights of such party to acquire, own
or enter into any businesses or lines of businesses, (iii) any prohibition or
limitation on the ability of such party to acquire or hold, or exercise full
rights of ownership of, any interests in or shares of capital stock of the
Company, including the right to vote the capital stock of the Company acquired
by it on all matters properly presented to the stockholders of the Company, (iv)
any prohibition or limitation on such party or any of its Subsidiaries or
Affiliates from effectively controlling in any material respect the business or
operations of such party or any of its Subsidiaries or Affiliates or (v) any
change in any respect in the governance of the Company from that set forth in
the Certificate of Incorporation, the Company's By-Laws and this Agreement, any
change in such party's rights under the LLC Agreement, Stockholders' Agreement
or this Agreement or any limitations on the ability of such party to exercise
any such rights.

     5.2. Employee Options. For purposes of Section 17.7(b) of the TWE
Partnership Agreement and Section 3.1(h)(i)(3) of the TWEAN Partnership
Agreement, officers and employees of the Company and its subsidiaries or any
successor(s) thereto that, prior to the date hereof, have been issued options to
acquire securities of TWX shall, notwithstanding the Distribution, continue to
be Eligible Option Holders (as such term is defined in the TWE Partnership
Agreement) from and after the Distribution.

     5.3. Indemnification. The Company hereby agrees to indemnify and hold
harmless TWX, MediaOne, AN, TWE and TWE-A/N and each of their respective
directors, officers, employees and Affiliates from and against any and all
losses, liabilities, obligations, damages, costs and expenses (including
reasonable fees and disbursements of counsel) based upon, attributable to, or
arising out of, the operation of the Time Warner Telecom Business whether
before, on or after the date of the Contribution.



                                       15



<PAGE>
<PAGE>



                                   ARTICLE VI

                           CONDITIONS TO TRANSACTIONS

     6.1. Conditions to Transactions. The obligations of TWX, MediaOne, A/N, TWE
and TWE-A/N to consummate the Contribution and the Distribution shall be subject
to the fulfillment of each of the following conditions, any or all of which may
be waived in whole or in part by TWE, MediaOne, A/N, TWE and TWE-A/N:

               (a) No Injunction. No statute, rule, regulation, injunction,
        restraining order or decree of any nature of any court or Governmental
        Authority shall be in effect that restrains, prevents or materially
        changes the Contribution or the Distribution.

               (b) Consents. All material consents, approvals, licenses,
        permits, orders or authorizations of, or registrations, declarations,
        notices or filings with, any Governmental Authority which are required
        to be obtained or made in connection with the Contribution and the
        Distribution shall have been obtained or made.

                                   ARTICLE VII

                               GENERAL PROVISIONS

     7.1. Termination. Notwithstanding anything to the contrary contained in
this Agreement, this Agreement may be terminated at any time (i) prior to
consummation of the Contribution and the Distribution, by the mutual written
consent of TWE and TWE-A/N or (ii) if the Contribution and the Distribution are
not consummated by December 31, 1998.

     7.2. Amendments. This Agreement may be amended only by a written instrument
executed by all of the parties hereto or their respective successors or assigns;
provided, however, that Article III may be amended by a written instrument
executed by TWE, TWX and MediaOne.

     7.3. Expenses. Except as otherwise provided herein, the Company shall pay
all fees and expenses relating to the Contribution and the Distribution, except
that each of the parties hereto shall pay the fees and expenses of its
respective counsel and shall pay all other expenses incurred by it in connection
with the negotiation, preparation and execution of this Agreement.

     7.4. Applicable Law. This Agreement shall be governed by, and construed in
accordance with, the law of the State of New York without reference to 


                                       16



<PAGE>
<PAGE>



choice of law principles, including all matters of construction, validity and
performance.

     7.5. Notices. Notices, requests, permissions, waivers, and other
communications hereunder shall be in writing and shall be deemed to have been
duly given if signed by the respective persons giving them (in the case of any
corporation the signature shall be by an officer thereof) and delivered by hand,
mailed by United States mail (registered, return receipt requested) or reputable
overnight courier service, properly addressed and postage prepaid, or delivered
by telecopy:

               If to TWX, TWE or TWE-A/N, to:

                       TIME WARNER COMPANIES, INC.
                       75 Rockefeller Plaza
                       New York, New York  10019
                       Telephone:  (212) 484-7580
                       Telecopy:   (212) 956-7281
                       Attention:  General Counsel

               with a copy to:

                       Cravath, Swaine & Moore
                       Worldwide Plaza
                       825 Eighth Avenue
                       New York, New York  10019
                       Telephone:  (212) 474-1000
                       Telecopy:   (212) 474-3700
                       Attention:  William P. Rogers, Jr.

               If to MediaOne, to:

                       MEDIAONE GROUP, INC.
                       188 Inverness Drive West
                       Englewood, Colorado 80112
                       Telephone:  (303) 858-3562
                       Telecopy:   (303) 858-3487
                       Attention:  Vice President-Law



                                       17



<PAGE>
<PAGE>




               with a copy to:

                       Weil, Gotshal & Manges LLP
                       767 Fifth Avenue
                       New York, New York  10153
                       Telephone:  (212) 310-8000
                       Telecopy:   (212) 310-8007
                       Attention:  Akiko Mikumo, Esq.

               If to A/N, to:

                       ADVANCE/NEWHOUSE PARTNERSHIP
                       5015 Campuswood Drive
                       East Syracuse, New York  13057
                       Telephone:  (315) 463-7675
                       Telecopy:   (315) 463-4127
                       Attention:  Robert J. Miron

               with a copy to:

                       Sabin, Bermant & Gould LLP
                       350 Madison Avenue
                       New York, New York  10017
                       Telephone:  (212) 692-4418
                       Telecopy:   (212) 692-4406
                       Attention:  Arthur J. Steinhauer

Such names and addresses may be changed by notice given in accordance with this
Section 7.5.

     7.6. Entire Agreement. This Agreement (including the Schedules and Exhibits
attached hereto, all of which are a part hereof) and the LLC Agreement contains
the entire understanding of the parties hereto with respect to the subject
matter contained herein and supersedes and cancels all prior agreements,
negotiations, correspondence, undertakings and communications of the parties,
oral or written, respecting such subject matter.

     7.7. Headings; References. The article, section and paragraph headings
contained in this Agreement are for reference purposes only and shall not affect
in any way the meaning or interpretation of this Agreement. All references
herein to "Articles", "Sections," "Schedules" or "Exhibits" shall be deemed to
be references to Articles or Sections hereof or Schedules or Exhibits hereto
unless otherwise indicated.




                                       18



<PAGE>
<PAGE>



     7.8. Counterparts. This Agreement may be executed in one or more
counterparts and each counterpart shall be deemed to be an original.

     7.9. Parties in Interest; Assignment. This Agreement shall inure to the
benefit of and be binding upon the parties hereto and their respective
successors or assigns. Nothing in this Agreement, express or implied, is
intended to confer upon any Person not a party to this Agreement any rights or
remedies under or by reason of this Agreement, except that the Company shall be
a third party beneficiary of the representations and warranties set forth in
Article IV. No party to this Agreement may assign or delegate all or any portion
of its rights, obligations or liabilities under this Agreement without the prior
written consent of the other parties to this Agreement.

     7.10. Severability; Enforcement. The invalidity of any portion hereof shall
not affect the validity, force or effect of the remaining portions hereof. If it
is ever held that any restriction hereunder is too broad to permit enforcement
of such restriction to its fullest extent, each party agrees that a court of
competent jurisdiction may enforce such restriction to the maximum extent
permitted by law, and each party hereby consents and agrees that such scope may
be judicially modified accordingly in any proceeding brought to enforce such
restriction.

     7.11. Arbitration. Any controversy arising under, out of, in connection
with, or relating to, this Agreement, and any amendment hereof, or the breach
hereof or thereof, shall be determined and settled by arbitration in New York,
New York, by a person or persons mutually agreed upon, or in the event of a
disagreement as to the selection of the arbitrator or arbitrators, in accordance
with the rules of the American Arbitration Association. Any award rendered
therein shall specify the findings of fact of the arbitrator or arbitrators and
the reasons of such award, with the reference to and reliance on relevant law.
Any such award shall be final and binding on each and all of the paries thereto
and their personal representatives, and judgment may be entered thereon in any
court having jurisdiction thereof.



                                       19



<PAGE>
<PAGE>






               IN WITNESS WHEREOF, the parties hereto have duly executed this
Agreement as of the date first above written.

                                      TIME WARNER COMPANIES, INC.

                                      By: /s/ Spencer B. Hays
                                         ------------------------------
                                         Name: Spencer B. Hays
                                         Title: Vice President

                                      MEDIAONE GROUP, INC.
                                      (a Delaware corporation)

                                      By: /s/ Pearre A. Williams
                                         ------------------------------
                                         Name:  Pearre A. Williams
                                         Title: Vice President

                                      ADVANCE/NEWHOUSE PARTNERSHIP

                                      By:    ADVANCE COMMUNICATION CORP.,
                                             General Partner

                                             By: /s/ Robert J. Miron
                                                --------------------------
                                                Name: Robert J. Miron
                                                Title: President

                                      TIME WARNER ENTERTAINMENT
                                      COMPANY, L.P.

                                      By: /s/ Spencer B. Hays
                                         ------------------------------
                                         Name: Spencer B. Hays
                                         Title: Vice President

                                      TIME WARNER ENTERTAINMENT-
                                       ADVANCE/NEWHOUSE PARTNERSHIP

                                      By:    TIME WARNER ENTERTAINMENT
                                             COMPANY, L.P., General Partner

                                             By: /s/ Spencer B. Hays
                                                --------------------------
                                                Name: Spencer B. Hays
                                                Title: Vice President

                                      For the purposes of Sections 4.6 and 5.3:
                                      TIME WARNER TELECOM LLC

                                      By: /s/ Spencer B. Hays
                                         ------------------------------
                                         Name: Spencer B. Hays
                                         Title: Vice President







<PAGE>