SPRINT CORP
SC 14D1, 1998-02-18
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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<PAGE>
 
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- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                               ----------------
 
                                 SCHEDULE 14D-1
              TENDER OFFER STATEMENT PURSUANT TO SECTION 14(D)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
 
                                      and
 
                                  SCHEDULE 13D
                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
 
                            EARTHLINK NETWORK, INC.
                           (NAME OF SUBJECT COMPANY)
 
                               ----------------
 
                               SPRINT CORPORATION
                                    (BIDDER)
 
                               ----------------
 
                     COMMON STOCK, $.01 PAR VALUE PER SHARE
                         (TITLE OF CLASS OF SECURITIES)
 
                                   270322100
                     (CUSIP NUMBER OF CLASS OF SECURITIES)
 
                               ----------------
 
                              DON A. JENSEN, ESQ.
                               SPRINT CORPORATION
                          2330 SHAWNEE MISSION PARKWAY
                             WESTWOOD, KANSAS 66205
                                 (913) 624-3326
            (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON AUTHORIZED
           TO RECEIVE NOTICES AND COMMUNICATIONS ON BEHALF OF BIDDER)
 
                                   COPIES TO:
                              JOHN A. GRANDA, ESQ.
                          STINSON, MAG & FIZZELL, P.C.
                               1201 WALNUT STREET
                          KANSAS CITY, MISSOURI 64106
                                 (816) 842-8600
 
                           CALCULATION OF FILING FEE
- --------------------------------------------------------------------------------
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<TABLE>
<CAPTION>
           TRANSACTION VALUATION*                       AMOUNT OF FILING FEE**
- ------------------------------------------------------------------------------
           <S>                                          <C>
                $56,250,000                                    $11,250
</TABLE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
   * For purposes of calculating the amount of the filing fee only. The amount
     assumes the purchase of 1,250,000 shares of Common Stock, $.01 par value
     per share, of Earthlink Network, Inc. at $45.00 per share.
  ** 1/50th of 1% of Transaction Valuation.
 
[_CHECK]BOX IF ANY PART OF THE FEE IS OFFSET AS PROVIDED BY RULES 0-11(a)(2)
  AND IDENTIFY THE FILING WITH WHICH THE OFFSETTING FEE WAS PREVIOUSLY PAID.
  IDENTIFY THE PREVIOUS FILING BY REGISTRATION STATEMENT NUMBER, OR THE FORM OR
  SCHEDULE AND THE DATE OF ITS FILING.
 
 Amount previously paid: Not Applicable   Filing party: Not Applicable
 Form or registration no.: Not Applicable Date filed: Not Applicable
 
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<PAGE>
 
                                 14D-1 AND 13D            Page 2 of 6 Pages
 
 
 
 
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 1 NAME OF REPORTING PERSONS: I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
      SPRINT CORPORATION
 
- --------------------------------------------------------------------------------
 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                                (A)[X]
                                                                (B) [_]
 
- --------------------------------------------------------------------------------
 3 SEC USE ONLY
 
- --------------------------------------------------------------------------------
 4 SOURCE OF FUNDS:
      WC
 
- --------------------------------------------------------------------------------
 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
  ITEMS 2(E) OR 2(F):
                                                                   [_]
 
- --------------------------------------------------------------------------------
 6 CITIZENSHIP OR PLACE OF ORGANIZATION:
      KANSAS
 
- --------------------------------------------------------------------------------
 7 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:
 
      6,939,496*
 
- --------------------------------------------------------------------------------
 8 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (7) EXCLUDES CERTAIN SHARES
                                                                   [_]
 
- --------------------------------------------------------------------------------
 9 PERCENT OF CLASS REPRESENTED TO AMOUNT IN ROW (7):
 
      61.4%
 
- --------------------------------------------------------------------------------
10 TYPE OF REPORTING PERSON*:
      CO
 
- --------------------------------------------------------------------------------
 
- --------
* Reflects highest number of shares as to which voting power or dispositive
   power is shared by virtue of membership in the groups described in Item
   2(a)-(d); (g).
 
                                       2

<PAGE>
 
                                 14D-1 AND 13D                Page 3 of 6 Pages
ITEM 1. SECURITY AND SUBJECT COMPANY.
 
  (a) The name of the subject company is EarthLink Network, Inc., a Delaware
corporation (the "Company"), and the address of its principal executive
offices is 3100 New York Drive, Pasadena, CA 91107.
 
  (b) This Schedule 14D-1 relates to the offer by Sprint Corporation (the
"Purchaser") to purchase 1,250,000 shares of common stock, par value $.01 per
share (the "Shares" or "Common Stock"), at a price of $45 per Share, net to
the seller in cash (the "Offer Price"), upon the terms and subject to the
conditions set forth in the Offer to Purchase dated February 18, 1998 (the
"Offer to Purchase"), and in the related Letter of Transmittal (which,
together with any amendments or supplements thereto, collectively constitute
the "Offer"), copies of which are attached hereto as Exhibits (a)(1) and
(a)(2), respectively. There were 11,301,915 Shares outstanding as of February
13, 1998.
 
  (c) Information concerning the principal market in which the Shares are
traded and the high and low sales price of the Shares for each quarterly
period since the Company became publicly traded is set forth in Section 6
("Price Range of the Shares; Dividends on the Shares") of the Offer to
Purchase and is incorporated herein by reference.
 
ITEM 2. IDENTITY AND BACKGROUND.
 
  (a)-(d); (g) The Purchaser is a Kansas corporation. The information set
forth in Section 11 ("Certain Information Concerning the Purchaser") of the
Offer to Purchase is incorporated herein by reference. The name, business
address, present principal occupation or employment, the material occupations,
positions, offices or employments for the past five years and citizenship of
each executive officer and director of the Purchaser, and the name, principal
business and address of any corporation or other organization in which such
occupations, positions, offices and employments are or were carried on are set
forth in Schedule I to the Offer to Purchase and is incorporated herein by
reference.
 
  In order to induce Sprint and Sprint L.P. to enter into the Investment
Agreement dated February 10, 1998 among the Purchaser, Sprint Communications
Company L.P. ("Sprint L.P."), the Company, Dolphin, Inc. ("Newco") and Dolphin
Sub, Inc. ("Newco Sub") (the "Investment Agreement") and perform the
transactions contemplated thereby (as described under the caption
"Introduction" and in Section 12 ("Purpose of the Offer, The Investment
Agreement; Ancillary Agreements") of the Offer to Purchase which is
incorporated herein by reference), the following members of management and
other stockholders (the "Granting Stockholders") entered into an Agreement to
Vote and Tender Stock dated February 10, 1998 ("Agreement to Vote and Tender
Stock"): Sky D. Dayton, Chairman of the Board of the Company, 1,500,000; Kevin
M. O'Donnell, a director of the Company, 944,614; Gregory Abbott, 427,212;
Robert S. London, 392,032; George Abbott, 203,364; and Storie Partners LP,
521,892. That agreement obligates the Granting Stockholders to tender all of
the 3,989,114 Shares (representing 35.3% of the outstanding Shares) which they
own into the Offer, and to vote those Shares in favor of (i) the Merger, (ii)
the issuance of the Convertible Preferred Stock (as defined under the caption
"Introduction" in the Offer to Purchase), the Convertible Notes (as defined
under the caption "Introduction" in the Offer to Purchase) and the Newco
Common Stock (as defined under the caption "Introduction" in the Offer to
Purchase) issuable upon conversion thereof, (iii) the other transactions
contemplated by the Investment Agreement, and (iv) any related matter that
must be approved by the holders of Common Stock or Newco Common Stock in order
for the transactions contemplated by the Investment Agreement to be
consummated (the matters referred to in (i), (ii), (iii) and (iv) are referred
to collectively as the "Company Stockholder Vote Matters"). In addition, the
following stockholders (the "Voting Stockholders") entered into an Agreement
to Vote Stock dated February 10, 1998 ("Agreement to Vote Stock") which
obligates them to vote all of the 2,950,382 Shares (representing 26.1% of the
outstanding Shares) in favor of the Company Stockholder Vote Matters: George
Soros, 214,545 Shares; Quantum Industrial Partners LDC, 1,456,480; Reed
Slatkin, a director of the Company (through Reed Slatkin & Associates),
1,042,473 Shares; and Sidney Azeez, a director of the Company, 236,884 Shares.
 
  Simultaneously with the execution of the Investment Agreement, the Purchaser
and the following stockholders (the "SA Stockholders") entered into a
Stockholders Agreement (the "Stockholders Agreement", which will not become
effective until the Closing of the transactions contemplated by the Investment
Agreement

<PAGE>
 
                                 14D-1 AND 13D                Page 4 of 6 Pages
and then only if the Offer is consummated and the conditions to the Closing
are satisfied or waived on or prior to the Closing) covering all of the Shares
or other equity securities of Newco they now own of record or beneficially or
which will receive in the Merger, or are convertible into Newco Common Stock
or are receivable in respect thereof ("Covered Shares"): Sky Dayton, Chairman
of the Board of the Company, 1,500,000 Shares; Quantum Industrial Partners
LDC, 1,456,480 Shares; Kevin M. O'Donnell, a director of the Company, 944,614
Shares; Reed Slatkin, a director of the Company (through Reed Slatkin &
Associates) 1,042,473 Shares; George Soros, 214,545 Shares; and Sidney Azeez,
a director of the Company, 236,884 Shares. The Stockholders Agreement
obligates the SA Stockholders to (i) vote all of the 5,394,996 Covered Shares
in favor of a Sprint Offer or Qualified Offer (as the terms Sprint Offer and
Qualified Offer are defined in Section 12 of the Offer to Purchase under the
subcaptions "Purchases of Additional Equity Securities; Business Combinations"
and "Third Party Offers", respectively) involving a business combination or
related matter, and (ii) to tender all of the Covered Shares into a tender
offer initiated by Sprint to effect a Sprint Offer or a Qualified Offer.
 
  The Purchaser and Sprint L.P. may be deemed to be members of a group with
the Granting Stockholders with respect to the agreements to vote and tender
the 3,989,114 Shares contemplated by the Agreement to Vote and Tender Stock,
and thus may be viewed as sharing voting and dispositive power for those
purposes with respect to the Shares covered thereby. The Purchaser and Sprint
L.P. may also be deemed to be members of a group with the Voting Stockholders
with respect to the agreements to vote the 2,950,382 Shares contemplated by
the Agreement to Vote Stock, and thus may be viewed as sharing voting power
for that purpose with respect to the Shares covered thereby. Finally, the
Purchaser and Sprint L.P. may be deemed to be members of a group with the SA
Stockholders with respect to the agreements to vote and tender the 5,394,996
covered shares of Newco Common Stock contemplated by the Stockholders
Agreement, and thus may be viewed as sharing voting and dispositive power with
respect to the Covered Shares.
 
  The Purchaser is making a separate filing to report its shared beneficial
ownership of Shares and Newco Common Stock resulting from its membership in
the three groups described in the two immediately preceding paragraphs. Sprint
does not have knowledge of the information called for by Instruction C to
Schedule 13D and Schedule 14D-1 with respect to the other members of such
groups and therefore is not required to report such information in this
combined Schedule 13D and 14D-1 pursuant to Rule 13d-1(k)(2), except for the
information set forth under the caption "Beneficial Ownership of Common Stock"
in the Company's Proxy Statement dated January 23, 1998.
 
  (e); (f) During the last five years, neither the Purchaser, nor, to the best
of the Purchaser's knowledge, any of the executive officers or directors of
the Purchaser has been convicted in a criminal proceeding (excluding traffic
violations or similar misdemeanors) or was a party to a civil proceeding of a
judicial or administrative body of competent jurisdiction as a result of which
any such person was or is subject to a judgment, decree or final order
enjoining future violations of, or prohibiting activities subject to, federal
or state securities laws or finding any violation of such law.
 
ITEM 3. PAST CONTACTS, TRANSACTIONS OR NEGOTIATIONS WITH THE SUBJECT COMPANY.
 
  (a)-(b) The information set forth under the caption "Introduction" and in
Sections 11 ("Contacts with the Company; Background of the Offer") and 12
("Purpose of the Offer; The Investment Agreement; Ancillary Agreements") of
the Offer to Purchase is incorporated herein by reference.
 
ITEM 4. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.
 
  (a) The information set forth in Section 10 ("Source and Amount of Funds")
of the Offer to Purchase is incorporated herein by reference.
 
  (b)-(c) Not applicable.
 
ITEM 5. PURPOSE OF THE TENDER OFFER AND PLANS OR PROPOSALS OF THE BIDDER.
 
  (a)-(g) The information set forth under the caption "Introduction" and in
Sections 7 ("Effect of the Offer on the Market for Common Stock; Stock
Quotation; and Exchange Act Registration") and 12 ("Purpose of the Offer, The
Investment Agreement; Ancillary Agreements") of the Offer to Purchase is
incorporated herein by reference.
<PAGE>
 
                                 14D-1 AND 13D                Page 5 of 6 Pages
 
ITEM 6. INTEREST IN SECURITIES OF THE SUBJECT COMPANY.
 
  (a)-(b) The information set forth under the caption "Introduction" and in
Section 12 ("Purpose of the Offer; The Investment Agreement; Ancillary
Agreements") of the Offer to Purchase is incorporated herein by reference.
 
ITEM 7. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
TO THE SUBJECT COMPANY'S SECURITIES.
 
  The information set forth under the caption "Introduction" and in Sections
11 ("Contacts with the Company; Background of the Offer") and 12 ("Purpose of
the Offer; The Investment Agreement; Ancillary Agreements") of the Offer to
Purchase is incorporated herein by reference.
 
ITEM 8. PERSONS RETAINED, EMPLOYED OR TO BE COMPENSATED.
 
  The information set forth under the caption "Introduction" and in Sections
10 ("Source and Amount of Funds") and 16 ("Fees and Expenses") of the Offer to
Purchase is incorporated herein by reference.
 
ITEM 9. FINANCIAL STATEMENTS OF CERTAIN BIDDERS.
 
  The information set forth in Section 9 ("Certain Information Concerning the
Purchaser") of the Offer to Purchase is incorporated herein by reference.
 
ITEM 10. ADDITIONAL INFORMATION.
 
  (a) The information set forth under the caption "Introduction" and in
Section 12 ("Purpose of the Offer; The Investment Agreement; Ancillary
Agreements") of the Offer to Purchase is incorporated herein by reference.
 
  (b)-(c) The information set forth in Section 15 ("Certain Legal Matters") of
the Offer to Purchase is incorporated herein by reference.
 
  (d) Not applicable.
 
  (e) Not applicable.
 
  (f) The information set forth in the Offer to Purchase, the Letter of
Transmittal and each of the other exhibits hereto, to the extent not otherwise
set forth herein, is incorporated herein by reference.
 
ITEM 11. MATERIAL TO BE FILED AS EXHIBITS.
 
  (a)(1) Offer to Purchase, dated February 18, 1998.
 
(2) Letter of Transmittal.
 
(3) Letter, dated February 18, 1998 from the Dealer Manager to brokers,
       dealers, commercial banks, trust companies and nominees.
 
(4) Letter, dated February 18, 1998 to be sent by brokers, dealers, commercial
       banks, trust companies and nominees to their clients.
 
(5) Notice of Guaranteed Delivery.
 
(6) IRS Guidelines for Certification of Taxpayer Identification Number
       Substitute Form W-9.


<PAGE>
 
                                 14D-1 AND 13D                Page 6 of 6 Pages
 
(7) Text of Press Release, dated February 10, 1998 issued by Purchaser and the
       EarthLink Network, Inc.
 
(8) Summary newspaper advertisement, dated February 18, 1998.
 
  (b)Not applicable.
 
  (c)(1) Investment Agreement, dated February 10, 1998, between Sprint
       Corporation, Sprint Communications Company L.P., EarthLink Network,
       Inc., Dolphin, Inc. and Dolphin Sub, Inc.
 
  (c)(2) Governance Agreement, dated February 10, 1998, between Sprint
       Corporation, Sprint Communications Company L.P., EarthLink Network,
       Inc. and Dolphin, Inc.
 
  (c)(3) Stockholders' Agreement, dated February 10, 1998, between Sprint
       Corporation, Sprint Communications Company L.P., the Company, Dolphin,
       Inc. and the SA Stockholders (as defined in Section 2).
 
  (c)(4) Agreement and Plan of Merger, dated February 10, 1998, between
       EarthLink Network, Inc., Dolphin, Inc., Dolphin Sub, Inc.
 
  (c)(5) Credit Agreement, dated February 10, 1998, between Sprint
       Corporation, EarthLink Network, Inc. and Dolphin, Inc.
 
  (c)(6) Registration Rights Agreement, dated February 10, 1998, between
       Sprint Corporation, Sprint Communications Company L.P., EarthLink
       Network, Inc. and Dolphin, Inc.
 
  (c)(7) Proposed Form of Certificate of Designation, Preferences and Rights
       of Series A Convertible Preferred Stock Dolphin, Inc.
 
  (c)(8) Agreement to Vote and Tender Stock, dated February 10, 1998, between
       Sprint Corporation, Sprint Communications Company L.P. and the Granting
       Stockholders (as defined in Section 2).
 
  (c)(9) Agreement to Vote Stock, dated February 10, 1998, between Sprint
       Corporation, Sprint Communications Company L.P. and the Voting
       Stockholders (as defined in Section 2).
 
  (d)Not applicable.
 
  (e)Not applicable.
 
  (f)Not applicable.
 
                                   SIGNATURE
 
  After due inquiry and to the best of my knowledge and belief, I certify that
the information set forth in this statement is true, complete and correct.
 
Dated: February 18, 1998
 
                                          Sprint Corporation
 
                                          By: _________________________________
                                             Name: Don A. Jensen
                                             Title: Vice President
<PAGE>
 
                                 14D-1 AND 13D                Page   of    Pages
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER                             DESCRIPTION
  -------                            -----------
 <C>       <S>                                                              <C>
 (a)(1)    Offer to Purchase, dated February 18, 1998.
 (a)(2)    Letter of Transmittal.
 (a)(3)    Letter, dated February 18, 1998 from the Dealer Manager to
           brokers, dealers, commercial banks, trust companies and
           nominees.
 (a)(4)    Letter, dated February 18, 1998 to be sent by brokers,
           dealers, commercial banks, trust companies and nominees to
           their clients.
 (a)(5)    Notice of Guaranteed Delivery.
 (a)(6)    IRS Guidelines for Certification of Taxpayer Identification
           Number Substitute Form W-9.
 (a)(7)    Press Release, dated February 18, 1998.
 (a)(8)    Summary newspaper advertisement, dated February 18, 1998.
 (b)       Not applicable.
 (c)(1)    Investment Agreement, dated February 10, 1998, between Sprint
           Corporation, Sprint Communications Company L.P., EarthLink
           Network, Inc., Dolphin, Inc. and Dolphin Sub, Inc.
 (c)(2)    Governance Agreement, dated February 10, 1998, between Sprint
           Corporation, Sprint Communications Company L.P., EarthLink
           Network, Inc. and Dolphin, Inc.
 (c)(3)    Stockholders' Agreement, dated February 10, 1998, between
           Sprint Corporation, Sprint Communications Company L.P., the
           Company, Dolphin, Inc. and the SA Stockholders (as defined in
           Section 2).
 (c)(4)    Agreement and Plan of Merger, dated February 10, 1998, between
           EarthLink Network, Inc., Dolphin, Inc., Dolphin Sub, Inc.
 (c)(5)    Credit Agreement, dated February 10, 1998, between Sprint
           Corporation, EarthLink Network, Inc. and Dolphin, Inc.
 (c)(6)    Registration Rights Agreement, dated February 10, 1998,
           between Sprint Corporation, Sprint Communications Company
           L.P., EarthLink Network, Inc. and Dolphin, Inc.
 (c)(7)    Proposed Form of Certificate of Designation, Preferences and
           Rights of Series A Convertible Preferred Stock Dolphin, Inc.
 (c)(8)    Agreement to Vote and Tender Stock, dated February 10, 1998,
           between Sprint Corporation, Sprint Communications Company L.P.
           and the Granting Stockholders (as defined in Section 2).
 (c)(9)    Agreement to Vote Stock, dated February 10, 1998, between
           Sprint Corporation, Sprint Communications Company L.P. and the
           Voting Stockholders (as defined in Section 2).
 (d)       Not applicable.
 (e)       Not applicable.
 (f)       Not applicable.
</TABLE>

<PAGE>
 
                          OFFER TO PURCHASE FOR CASH
                       1,250,000 SHARES OF COMMON STOCK
                                      OF
                            EARTHLINK NETWORK, INC.
                                      AT
                             $45.00 NET PER SHARE
                                      BY
                              SPRINT CORPORATION
 
    THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00
 MIDNIGHT, NEW YORK CITY TIME, ON FRIDAY, MARCH 20, 1998, UNLESS THE OFFER IS
                                   EXTENDED.
 
                                ---------------
 
THE OFFER IS CONDITIONED UPON (1) THERE BEING VALIDLY TENDERED AND NOT
WITHDRAWN PRIOR TO THE EXPIRATION OF THE OFFER 1,250,000 SHARES (AS DEFINED
HEREIN), (2) THE CONDITIONS TO THE OBLIGATIONS OF SPRINT CORPORATION, SPRINT
COMMUNICATIONS COMPANY L.P., EARTHLINK NETWORK, INC., DOLPHIN, INC., AND
DOLPHIN SUB, INC. TO CONSUMMATE THE TRANSACTIONS CONTEMPLATED BY THE
INVESTMENT AGREEMENT (AS DEFINED HEREIN) (OTHER THAN THE ACCEPTANCE FOR
PAYMENT OF SHARES PURSUANT TO THE OFFER) HAVING BEEN SATISFIED OR WAIVED AND
(3) THE EXPIRATION OR TERMINATION OF ALL WAITING PERIODS IMPOSED UPON
CONSUMMATION OF THE OFFER AND THE OTHER TRANSACTIONS CONTEMPLATED BY THE
INVESTMENT AGREEMENT BY THE HART-SCOTT-RODINO ANTITRUST IMPROVEMENTS ACT OF
1976, AS AMENDED, AND THE REGULATIONS THEREUNDER, AS WELL AS THE OTHER
CONDITIONS DESCRIBED HEREIN.
 
                                ---------------
 
THE BOARD OF DIRECTORS OF EARTHLINK NETWORK, INC. HAS, BY UNANIMOUS VOTE OF
ALL DIRECTORS, APPROVED THE OFFER AND THE OTHER TRANSACTIONS DESCRIBED IN THIS
OFFER TO PURCHASE AND DETERMINED THAT THE TERMS OF THE OFFER AND SUCH OTHER
TRANSACTIONS, TAKEN TOGETHER, ARE FAIR TO, AND IN THE BEST INTERESTS OF, THE
STOCKHOLDERS OF THE COMPANY AND RECOMMENDS THAT ALL STOCKHOLDERS OF THE
COMPANY ACCEPT THE OFFER AND TENDER THEIR SHARES PURSUANT TO THE OFFER.
 
                                ---------------
 
                                   IMPORTANT
 
ANY STOCKHOLDER DESIRING TO TENDER ALL OR ANY PORTION OF SUCH STOCKHOLDER'S
SHARES SHOULD EITHER (I) COMPLETE AND SIGN THE LETTER OF TRANSMITTAL (OR A
FACSIMILE COPY THEREOF) IN ACCORDANCE WITH THE INSTRUCTIONS IN THE LETTER OF
TRANSMITTAL, HAVE SUCH STOCKHOLDER'S SIGNATURE THEREON GUARANTEED IF REQUIRED
BY INSTRUCTION 1 TO THE LETTER OF TRANSMITTAL, AND MAIL OR DELIVER THE LETTER
OF TRANSMITTAL AND ANY OTHER REQUIRED DOCUMENTS TO THE DEPOSITARY AND EITHER
DELIVER THE CERTIFICATES FOR SUCH SHARES TO THE DEPOSITARY ALONG WITH THE
LETTER OF TRANSMITTAL OR DELIVER SUCH SHARES PURSUANT TO THE PROCEDURE FOR
BOOK-ENTRY TRANSFER SET FORTH IN SECTION 2 PRIOR TO THE EXPIRATION OF THE
OFFER OR (II) REQUEST SUCH STOCKHOLDER'S BROKER, DEALER, COMMERCIAL BANK,
TRUST COMPANY OR OTHER NOMINEE TO EFFECT THE TRANSACTION FOR SUCH STOCKHOLDER.
A STOCKHOLDER HAVING SHARES REGISTERED IN THE NAME OF A BROKER, DEALER,
COMMERCIAL BANK, TRUST COMPANY OR OTHER NOMINEE MUST CONTACT SUCH BROKER,
DEALER, COMMERCIAL BANK, TRUST COMPANY OR OTHER NOMINEE IF SUCH STOCKHOLDER
DESIRES TO TENDER SUCH SHARES.
 
A STOCKHOLDER WHO DESIRES TO TENDER SHARES AND WHOSE CERTIFICATES FOR SUCH
SHARES ARE NOT IMMEDIATELY AVAILABLE OR WHO CANNOT COMPLY IN A TIMELY MANNER
WITH THE PROCEDURE FOR BOOK-ENTRY TRANSFER DESCRIBED HEREIN, OR WHO CANNOT
DELIVER ALL REQUIRED DOCUMENTS TO THE DEPOSITARY PRIOR TO THE EXPIRATION OF
THE OFFER, MAY TENDER SUCH SHARES BY FOLLOWING THE PROCEDURE FOR GUARANTEED
DELIVERY SET FORTH IN SECTION 2.
 
QUESTIONS AND REQUESTS FOR ASSISTANCE OR FOR ADDITIONAL COPIES OF THIS OFFER
TO PURCHASE, THE LETTER OF TRANSMITTAL, THE NOTICE OF GUARANTEED DELIVERY AND
ALL OTHER TENDER OFFER MATERIALS MAY BE DIRECTED TO THE INFORMATION AGENT OR
THE DEALER MANAGER AT THEIR ADDRESS AND TELEPHONE NUMBERS SET FORTH ON THE
BACK COVER OF THIS OFFER TO PURCHASE.
 
                                ---------------
 
                     THE DEALER MANAGER FOR THE OFFER IS:
 
                         SBC WARBURG DILLON READ INC.
FEBRUARY 18, 1998
<PAGE>
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
Introduction..............................................................   1
 1. Terms of the Offer....................................................   4
 2. Procedure for Tendering Shares........................................   7
 3. Withdrawal Rights.....................................................  10
 4. Acceptance for Payment and Payment....................................  10
 5. Certain Federal Income Tax Consequences...............................  12
 6. Price Range of the Shares; Dividends on the Shares....................  12
 7. Effect of the Offer on the Market for the Shares, Stock Quotation and
 Exchange Act Registration................................................  13
 8. Certain Information Concerning the Company............................  13
 9. Certain Information Concerning the Purchaser..........................  15
10. Source and Amount of Funds............................................  16
11. Contacts with the Company; Background of the Offer....................  17
12. Purpose of the Offer; The Investment Agreement; Ancillary Agreements..  19
13. Dividends and Distributions...........................................  34
14. Certain Conditions of the Offer.......................................  34
15. Certain Legal Matters.................................................  37
16. Fees and Expenses.....................................................  39
17. Miscellaneous.........................................................  39
Schedule I--Directors and Executive Officers.............................. S-1
</TABLE>
<PAGE>
 
To the Holders of the Common Stock of EarthLink Network, Inc.:
 
                                 INTRODUCTION
 
THE OFFER
 
  Sprint Corporation, a Kansas corporation (the "Purchaser" or "Sprint"),
hereby offers to purchase 1,250,000 shares of Common Stock, par value $0.01
per share (the "Shares" or "Common Stock"), of EarthLink Network, Inc., a
Delaware corporation (the "Company"), at $45.00 per Share (the "Offer Price"),
net to the seller in cash, upon the terms and subject to the conditions set
forth in this Offer to Purchase and in the related Letter of Transmittal
(which, together with any amendments or supplements hereto or thereto,
collectively constitute the "Offer"). The Offer is being made pursuant to the
Investment Agreement dated as of February 10, 1998 (the "Investment
Agreement"), among the Purchaser, Sprint Communications Company L.P., a
Delaware limited partnership ("Sprint L.P."), the Company, Dolphin, Inc., a
Delaware corporation ("Newco"), and Dolphin Sub, Inc., a Delaware corporation
and a wholly-owned subsidiary of Newco ("Newco Sub"), and certain related
agreements described in this Offer to Purchase.
 
  Sprint L.P. operates the long distance communications services division of
Sprint and is owned by affiliates of Sprint. Newco and Newco Sub are nominally
capitalized and were established to facilitate the transfer of assets to Newco
in exchange for the issuance to Sprint L.P. of 4,102,941 shares of Series A
Convertible Preferred Stock, par value $.01 per share of Newco (the
"Convertible Preferred Stock") in connection with the merger of Newco Sub with
and into the Company (the "Merger"). Upon consummation of the Merger, the
Company will become a subsidiary of Newco and all of the outstanding shares of
Common Stock will be converted into an equal number of shares of common stock,
par value $.01 per share of Newco ("Newco Common Stock"), except for any
shares of Common Stock receivable upon the exercise of warrants or certain
other rights to acquire Common Stock which are not amended prior to the Merger
to become exercisable only for Newco Common Stock (the "Dilutable
Securities"). The Offer and the other transactions contemplated by the
Investment Agreement are conditioned upon the amendment of such Dilutable
Securities so that not more than 8% of the shares of Common Stock outstanding
immediately prior to the Closing will be subject to Dilutable Securities after
the Merger (the "Amendment Condition").
 
  Tendering stockholders will not be obligated to pay brokerage fees or
commissions or, except as set forth in Instruction 6 of the Letter of
Transmittal, transfer taxes on the purchase of Shares by the Purchaser
pursuant to the Offer. The Purchaser will pay all fees and expenses of SBC
Warburg Dillon Read Inc. ("WDR"), which is acting as Dealer Manager (in such
capacity, the "Dealer Manager"), American Stock Transfer & Trust Company,
which is acting as the Depositary (the "Depositary"), and D. F. King & Co.,
Inc., which is acting as Information Agent (the "Information Agent"), in each
case incurred in connection with the Offer. See Section 16.
 
  The Board of Directors of the Company (the "Board of Directors") has, by
unanimous vote of all Directors, approved the Offer and the other transactions
described in this Offer to Purchase and determined that the terms of the Offer
and such other transactions, taken together, are fair to, and in the best
interests of, the stockholders of the Company and recommends that all
stockholders of the Company accept the Offer and tender their Shares pursuant
to the Offer.
 
  The Company has retained Deutsche, Morgan Grenfell Inc. ("DMG") as its
financial adviser. DMG rendered an opinion to the Board of Directors that, as
of the date of such opinion, the Offer, the sale of Convertible Preferred
Stock and the Merger, when taken together, are fair from a financial point of
view to the holders of the Common Stock.
 
  Consummation of the Offer is conditioned upon (1) there being validly
tendered and not withdrawn prior to the Expiration Date (as defined in Section
1) 1,250,000 Shares (the "Minimum Tender Condition"), and (2) the
 
                                       1
<PAGE>
 
Amendment Condition and the other conditions to the obligations of the
Purchaser, Sprint L.P., Newco, Newco Sub, and the Company to consummate the
transactions contemplated by the Investment Agreement (other than the
acceptance for payment of Shares pursuant to the Offer) having been satisfied
or waived (collectively, the "Investment Agreement Conditions"), including the
expiration or termination of all waiting periods imposed upon consummation of
the Offer and the other transactions contemplated by the Investment Agreement
by the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and
the regulations thereunder (the "HSR Act") and the absence of any action taken
or instituted by the Department of Justice, the Federal Trade Commission or by
any other governmental entity to delay or otherwise enjoin the transactions
contemplated by the Investment Agreement (the "HSR Condition"). See Sections 1
and 14.
 
THE INVESTMENT AGREEMENT
 
  The following summary of the Investment Agreement is qualified in its
entirety by the express terms of such agreement, which is included as an
exhibit to the Purchaser's Tender Offer Statement on Schedule 14D-1.
 
  The Investment Agreement provides, among other things, that subject to the
terms and conditions set forth therein, immediately following the consummation
of the Offer, (i) the Merger will be effected and the issued and outstanding
Shares will be converted into shares of Newco Common Stock; (ii) Sprint L.P.
will acquire 4,102,941 shares of Convertible Preferred Stock, in exchange for
(A) an aggregate cash consideration of $23,750,000, (B) the assignment to
Newco of 100% of the Sprint Internet Passport SM Subscribers ("SIP
Subscribers"), of which there were approximately 130,000 as of the date of
execution of the Investment Agreement, and (C) Sprint L.P. having entered into
a network agreement whereby Newco and the Company will utilize Sprint L.P.'s
long-distance network under specified terms and conditions (the issuance of
such Convertible Preferred Stock, "Convertible Preferred Stock Issuance", and
the consideration described in (A), (B) and (C), collectively, the
"Convertible Preferred Stock Consideration"); and (iii) Sprint will provide
Newco and the Company, as co-borrowers, with up to $25 million of convertible
senior debt financing on or after the Closing (as defined below), with such
amount to increase by $25 million on each of the first, second and third
anniversaries of the Closing Date (as defined below) for a total of up to $100
million of such financing at the end of such period (the "Convertible Debt
Financing"), such indebtedness to be evidenced by one or more Convertible
Senior Promissory Note(s) (the "Convertible Notes") and to be subject to the
terms and conditions of a Credit Agreement dated as of February 10, 1998 among
the Purchaser, Newco and the Company (the "Credit Agreement"). The closing of
the Merger, the Convertible Preferred Stock Issuance and the other
transactions described herein which will occur concurrently with the Merger is
referred to as the "Closing" and the date on which the Closing occurs is
referred to as the "Closing Date."
 
  Consummation of the transactions (other than the Offer) contemplated by the
Investment Agreement is conditioned upon the Purchaser having accepted for
payment the Shares to be purchased pursuant to the Offer (the "Offer
Condition") and the satisfaction of the HSR Condition, as well as the other
conditions described in Section 14. For purposes of the Offer, the Purchaser
will be deemed to have accepted for payment, and thereby purchased, Shares
properly tendered and not withdrawn as, if and when the Purchaser gives oral
or written notice to the Depositary of the Purchaser's acceptance of such
shares (the time of giving such notice is the "Offer Acceptance Time" and the
date on which such notice is given is the "Offer Acceptance Date"). If the
Shares have been accepted for payment pursuant to the Offer, the Offer
Acceptance Time will immediately precede the Closing and the Offer Acceptance
Date will occur on the same date as the Closing Date.
 
  In order to induce Sprint and Sprint L.P. to enter into the Investment
Agreement and perform the transactions contemplated thereby, certain members
of management and other stockholders (the "Granting Stockholders") have
entered into an Agreement to Vote and Tender Stock dated February 10, 1998
("Agreement to Vote and Tender Stock"). That agreement obligates the Granting
Stockholders to tender all of the 3,989,114 Shares (representing 35.3% of the
outstanding Shares) which they own into the Offer, and to vote those Shares in
favor of (i) the Merger, (ii) the Convertible Preferred Stock Issuance, the
issuance of the Convertible Notes and the Newco Common Stock issuable upon
conversion thereof, (iii) the other transactions contemplated by the
Investment Agreement, and (iv) any related matter that must be approved by the
holders of Common Stock or Newco Common Stock in order for the transactions
contemplated by the Investment Agreement to be
 
                                       2
<PAGE>
 
consummated (the matters referred to in (i), (ii), (iii) and (iv) are referred
to collectively as the "Company Stockholder Vote Matters"). In order to ensure
that the agreement to vote set forth in the Agreement to Vote and Tender Stock
will be fulfilled, each of the Granting Stockholders granted to the Purchaser
an Irrevocable Proxy, coupled with an interest, to vote in favor of the
Company Stockholder Vote Matters (the "Irrevocable Proxies"). The Granting
Stockholders are Sky Dayton, Chairman of the Board of the Company, 1,500,000
Shares; Kevin M. O'Donnell, a Director of the Company, 944,614 Shares; Storie
Partners, L.P., 521,892 Shares; Gregory Abbott, 427,212 Shares; Robert S.
London, 392,032 Shares; and George Abbott, 203,364 Shares.
 
  In addition, certain other stockholders (the "Voting Stockholders") have
entered into an Agreement to Vote Stock dated February 10, 1998 ("Agreement to
Vote Stock") which obligates them to vote all of their 2,950,382 Shares
(representing 26.1% of the outstanding Shares) in favor of the Company
Stockholder Vote Matters, but did not grant any irrevocable proxies
thereunder. The Voting Stockholders are Quantum Industrial Partners LDC,
1,456,480 Shares; Reed Slatkin, a Director of the Company (through Reed
Slatkin & Associates), 1,042,473 Shares; Sidney Azeez, a Director of the
Company, 236,884 Shares; and George Soros, 214,545 Shares.
 
  The number of Shares obligated to be tendered and/or voted pursuant to these
agreements will ensure approval of the Company Stockholder Vote Matters,
satisfaction of the Minimum Tender Condition, and consummation of the
transactions contemplated by the Investment Agreement, unless the Investment
Agreement Conditions have not been satisfied or waived on or prior to the
Offer Acceptance Time as described in Section 12.
 
  The Company has informed the Purchaser that as of February 13, 1998, there
were 11,301,915 Shares issued and outstanding. Upon consummation of the Offer,
the Purchaser will own approximately 11.1% of such total number of issued and
outstanding Shares, which will be converted into the same number of shares of
Newco Common Stock pursuant to the Merger. The Company has also informed the
Purchaser that as of February 13, 1998, there were 1,901,969 Shares reserved
for issuance upon the exercise of outstanding employee stock options ("Stock
Options"), 391,515 Shares reserved for issuance pursuant to the Company's
Convertible Note issued to UUNET Technologies, Inc. ("UUNET Note") and 887,647
Shares reserved for issuance upon the exercise of outstanding warrants
("Warrants"). Based upon the conversion price in effect on the Closing Date,
the Convertible Preferred Stock would be convertible into 3,533,411 shares of
Newco Common Stock, provided that the Convertible Preferred Stock may not be
converted prior to the first anniversary of the Closing Date. Based on these
figures, immediately after consummation of the Offer, the Merger and the other
transactions contemplated by the Investment Agreement, the Purchaser would own
approximately 26.6% of the total number of issued and outstanding shares of
Newco Common Stock on a fully diluted basis (that is, assuming that (i) the
UUNET Note has been converted into shares of Newco Common Stock, (ii) the
Convertible Preferred Stock is converted into Newco Common Stock, and (iii)
that all outstanding Warrants and Stock Options have been exercised). However,
the Convertible Preferred Stock will pay dividends thereon for the first five
years in the form of increases in its Liquidation Value ("Liquidation
Accretion Dividends"), at a per annum rate of 3% of the Liquidation Value,
which will accrue and compound quarterly in arrears, but which will accelerate
in the event of a Business Combination (as defined in Section 12) or an
optional redemption by Newco. At the Closing, the Liquidation Value will be
the average of the closing price per share of Newco Common Stock for the 30
trading days prior to the Closing Date. Increases in the Liquidation Value
will have the effect of increasing the number of shares of Newco Common Stock
which the Purchaser will receive upon conversion of the Convertible Preferred
Stock. Assuming that the Convertible Preferred Stock is held by the Purchaser
for the initial five year period, or the Liquidation Accretion Dividends are
accelerated, the Purchaser will be entitled to receive 4,102,941 shares of
Newco Common Stock upon conversion thereof, subject to applicable antidilution
provisions. If the fully diluted number of Shares, as calculated above, were
the same at that time, the Purchaser would then own approximately 28.8% of the
total number of issued and outstanding shares of Newco Common Stock on that
basis.
 
  Advances of funds under the Credit Agreement will be evidenced by
Convertible Notes, which are convertible into Newco Common Stock. The
Conversion Price per share at which the Convertible Notes may be converted
into Newco Common Stock is 130% of the average of the closing prices for Newco
Common Stock for the 30 trading days immediately preceding the applicable
advance of funds under the Credit Agreement. Because the number of shares
receivable upon conversion of the Convertible Notes is dependent upon future
 
                                       3
<PAGE>
 
trading prices for Newco Common Stock, and because the amount of advances
under the Credit Agreement is within Newco's discretion (provided it is in
compliance with applicable Credit Agreement conditions), it is not possible to
predict the extent to which, if any, the Purchaser's fully diluted ownership
would increase in the event that advances are made under the Credit Agreement.
 
  Simultaneously with the execution of the Investment Agreement, the following
agreements were executed and delivered by the parties thereto: (i) an
Agreement and Plan of Merger dated as of February 10, 1998 among Newco, Newco
Sub and the Company, setting forth, inter alia, the terms and conditions of
the Merger of Newco Sub into the Company (the "Agreement and Plan of Merger"),
(ii) the Agreement to Vote and Tender Stock, (iii) the Agreement to Vote
Stock, (iv) the Credit Agreement, (v) a Governance Agreement dated as of
February 10, 1998, between the Purchaser, Sprint L.P., the Company and Newco,
whereby certain terms and conditions are established concerning the corporate
governance of Newco, the acquisition and disposition of equity securities of
Newco by the Purchaser and its affiliates, and the rights of the Newco Board
of Directors with respect to acquisition proposals and business combinations
(the "Governance Agreement"), (vi) a Marketing and Distribution Agreement
dated as of February 10, 1998 among the Purchaser, Sprint L.P., Newco and the
Company, whereby the Purchaser, Sprint L.P., Newco and the Company agree to
provide certain cooperation and support to each other in specified marketing
matters and Sprint L.P. grants Newco the right to utilize certain distribution
channels of Sprint L.P. and a license to use Sprint L.P.'s brand in the
business of the Company (the "Marketing Agreement"), (vii) a Network Services
Agreement dated as of February 10, 1998, between Sprint L.P., Newco and the
Company, which grants Newco and the Company the right to use a minimum and
maximum number of ports on Sprint L.P.'s long-distance network, along with
pricing and other terms set forth therein (the "Network Agreement"), (viii) a
Registration Rights Agreement dated as of February 10, 1998, between the
Purchaser, Sprint L.P. and Newco establishing the rights of the Purchaser and
its affiliates with respect to public offerings and sales of equity securities
of Newco and to obtain registration thereof under federal and state securities
laws (the "Registration Rights Agreement"), and (ix) a Stockholders Agreement
dated as of February 10, 1998, between the Purchaser and certain stockholders
of the Company which provides for certain rights and obligations with respect
to such stockholders' voting and disposition of equity securities of Newco in
connection with an offer by the Purchaser to acquire the remaining equity
securities of Newco (the "Stockholders Agreement"). The agreements referred to
in (i), (iv), (v), (vi), (vii), (viii) and (ix) will not become effective
until the Closing and then only if the Offer is consummated and the Investment
Agreement Conditions are satisfied or waived on or prior to the Closing. The
Agreement and Plan of Merger, the Agreement to Vote and Tender Stock, the
Agreement to Vote Stock, the Credit Agreement, the Governance Agreement, the
Marketing Agreement, the Network Agreement, the Registration Rights Agreement
and the Stockholders Agreement are referred to as the "Ancillary Agreements."
The Investment Agreement and the Ancillary Agreements are more fully described
in Section 12.
 
  Certain Federal income tax consequences of the sale of Shares pursuant to
the Offer are described in Section 5.
 
  Following the consummation of the Offer, the Convertible Preferred Stock
Issuance, the Merger, and the other transactions contemplated by the
Investment Agreement, Newco will become a public company subject to the
informational filing requirements of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), and the Company will be its subsidiary.
Application will be made for Newco Common Stock to trade under the ticker
symbol "ELNK" on the Nasdaq National Market of the National Association of
Securities Dealers Automated Quotation System after such transactions and it
is expected that the Shares (after they are converted into shares of Newco
Common Stock) will continue to trade thereon.
 
  THIS OFFER TO PURCHASE AND THE RELATED LETTER OF TRANSMITTAL CONTAIN
IMPORTANT INFORMATION WHICH SHOULD BE READ CAREFULLY BEFORE ANY DECISION IS
MADE WITH RESPECT TO THE OFFER.
 
1. TERMS OF THE OFFER
 
  Upon the terms and subject to the conditions of the Offer, the Purchaser
will accept for payment and pay for 1,250,000 Shares validly tendered prior to
the Expiration Date and not theretofore withdrawn in accordance
 
                                       4
<PAGE>
 
with Section 3. The term "Expiration Date" means 12:00 Midnight, New York City
time, on Friday, March 20, 1998, unless and until the Purchaser shall have
extended the period of time during which the Offer is open, in which event the
term "Expiration Date" shall mean the latest time and date at which the Offer,
as so extended by the Purchaser, shall expire. The Investment Agreement
provides that the Offer may not be consummated prior to March 20, 1998 and
that the Expiration Date may not be extended beyond June 15, 1998, without, in
each case, the prior written consent of the Company.
 
  The Company will prepare and file with the Securities and Exchange
Commission (the "Commission") a proxy statement (the "Proxy Statement")
relating to a special meeting of the Company's stockholders (the "Special
Meeting") to be held to obtain stockholder approval of the Merger, the
Convertible Preferred Stock Issuance, the issuance of Convertible Notes and
the issuance of Newco Common Stock upon conversion of the Convertible
Preferred Stock and the Convertible Notes and the other Company Stockholder
Vote Matters in order to satisfy the requirements of Section 251 of the
Delaware General Corporation Law (the "DGCL") and Rule 4460 of the National
Association of Securities Dealers, Inc. The Newco Common Stock to be issued
pursuant to the Merger will be registered under the Securities Act of 1933, as
amended (the "Securities Act"), on Form S-4 (the "S-4 Registration
Statement"). A combined Proxy Statement and Prospectus forming Part I of the
S-4 Registration Statement will be mailed to the stockholders of the Company
at least 20 business days prior to the Special Meeting. Among the conditions
included within the Investment Agreement Conditions are the requirements that
the S-4 Registration has become effective under the Securities Act and that
the holders of Common Stock have approved the Company Stockholder Vote
Matters. In view of the time needed to accomplish the foregoing, the Purchaser
anticipates that it may be necessary to extend the period of time during which
the Offer is open beyond March 20, 1998 but not later than June 15, 1998.
 
  If more than 1,250,000 Shares are validly tendered prior to the Expiration
Date and not withdrawn, the Purchaser will, upon the terms and subject to the
conditions of the Offer, accept such Shares for payment on a pro rata basis,
with adjustments to avoid purchases of fractional Shares, based upon the
number of Shares validly tendered prior to the Expiration Date and not
withdrawn.
 
  Because of the difficulty of determining precisely the number of Shares
validly tendered and not withdrawn, if proration is required, the Purchaser
would not expect to announce the final results of proration until
approximately three Nasdaq National Market trading days after the Expiration
Date. The Purchaser will announce the preliminary results of proration by
press release as promptly as practicable after the Expiration Date. Holders of
Shares may obtain such preliminary information from the Depositary or the
Information Agent, and also may be able to obtain such preliminary information
from their brokers.
 
  The Investment Agreement provides that the terms of the Offer may not be
amended or modified without the prior consent of the Company; provided,
however, that without the consent of the Company, the Purchaser may extend the
Offer (i) if at the scheduled expiration date of the Offer any of the
conditions to the Purchaser's obligation to accept for payment, and pay for,
Shares shall not have been satisfied or waived, until such time as such
conditions are satisfied or waived, (ii) for any period required by any rule,
regulation, interpretation or position of the Commission applicable to the
Offer and (iii) for any reason on one occasion for an aggregate period of not
more than five business days beyond the latest expiration date that would
otherwise be permitted under the terms of the Investment Agreement as
described in this sentence, but in any case, not beyond June 15, 1998. As used
in this Offer to Purchase, "business day" has the meaning set forth in Rule
14d-1 under the Exchange Act.
 
  Subject to the terms of the Investment Agreement and the applicable rules
and regulations of the Commission, the Purchaser expressly reserves the right
(but shall not be obligated), in its sole discretion, at any time and from
time to time, to (i) extend the period of time during which the Offer is open,
and thereby delay acceptance for payment of and the payment for any Shares, by
giving oral or written notice of such extension to the Depositary and (ii)
amend the Offer in any other respect by giving oral or written notice of such
amendment to the Depositary. THE PURCHASER SHALL NOT HAVE ANY OBLIGATION TO
PAY INTEREST ON THE PURCHASE PRICE FOR TENDERED SHARES IF THE OFFER IS
EXTENDED FOR ANY REASON.
 
                                       5
<PAGE>
 
  If by 12:00 Midnight, New York City time, on Friday, March 20, 1998 (or any
other date or time then set as the Expiration Date) any or all conditions to
the Offer have not been satisfied or waived, the Purchaser reserves the right
(but shall not be obligated), subject to the terms and conditions contained in
the Investment Agreement and to the applicable rules and regulations of the
Commission, to (i) waive all the unsatisfied conditions and, subject to
complying with the terms of the Investment Agreement and the applicable rules
and regulations of the Commission, accept for payment and pay for 1,250,000
Shares validly tendered prior to the Expiration Date and not theretofore
withdrawn, (ii) extend the Offer to a date not later than June 15, 1998 and,
subject to the right of stockholders to withdraw Shares until the Expiration
Date, retain the Shares that have been tendered during the period or periods
for which the Offer is extended or (iii) amend the Offer.
 
  Subject to the provisions of the Investment Agreement described above, there
can be no assurance that the Purchaser will exercise its right to extend the
Offer. Any extension, waiver, amendment or termination will be followed as
promptly as practicable by public announcement. In the case of an extension,
Rule 14e-1(d) under the Exchange Act requires that the announcement be issued
no later than 9:00 a.m., New York City time, on the next business day after
the previously scheduled Expiration Date in accordance with the public
announcement requirements of Rule 14d-4(c) under the Exchange Act. Subject to
applicable law (including Rules 14d-4(c) and 14d-6(d) under the Exchange Act,
which require that any material change in the information published, sent or
given to stockholders in connection with the Offer be promptly disseminated to
stockholders in a manner reasonably designed to inform stockholders of such
change), and without limiting the manner in which the Purchaser may choose to
make any public announcement, the Purchaser will not have any obligation to
publish, advertise or otherwise communicate any such public announcement other
than by making a release to the Dow Jones News Service.
 
  If the Purchaser extends the Offer or if the Purchaser (whether before or
after its acceptance for payment of Shares) is delayed in its acceptance for
payment of or payment for Shares or is unable to pay for shares pursuant to
the Offer for any reason, then, without prejudice to the Purchaser's rights
under the Offer, the Depositary may retain tendered Shares on behalf of the
Purchaser, and such Shares may not be withdrawn except to the extent tendering
stockholders are entitled to withdrawal rights as described in Section 3.
However, the ability of the Purchaser to delay the payment for Shares that the
Purchaser has accepted for payment is limited by Rule 14e-1(c) under the
Exchange Act, which requires that a bidder pay the consideration offered or
return the securities deposited by or on behalf of holders of securities
promptly after the termination or withdrawal of such bidder's offer.
 
  If the Purchaser makes a material change in the terms of the Offer or the
information concerning the Offer or waives a material condition of the Offer
(including, with the Company's consent, a waiver of the Minimum Tender
Condition), the Purchaser will disseminate additional tender offer materials
and extend the Offer to the extent required by Rules 14d-4(c), 14d-6(d) and
14e-1(d) under the Exchange Act. With respect to a change in price or a change
in the percentage of securities sought other than an increase in the number of
Shares sought of two percent or less of the total number of outstanding
shares, a minimum period of 10 business days is generally required to allow
for adequate dissemination to stockholders. The minimum period during which
the Offer must remain open following material changes in the terms of the
Offer or information concerning the Offer, other than a change in price or
such a change in the percentage of securities sought, will depend upon the
facts and circumstances then existing, including the relative materiality of
the changed terms or information.
 
  Consummation of the Offer is conditioned upon satisfaction or waiver of the
Minimum Tender Condition, the Investment Agreement Conditions and the HSR
Condition, as well as the satisfaction or waiver of the other conditions
described in Section 14. Subject to the terms and conditions contained in the
Investment Agreement, the Purchaser reserves the right (but shall not be
obligated) to waive any or all such conditions. However, if the Purchaser
waives or amends the Minimum Tender Condition (which action may not be taken
under the Investment Agreement without the Company's consent) during the last
five business days during which the Offer is open, the Purchaser will be
required to extend the Expiration Date so that the Offer will remain open for
at least five business days after the announcement of such waiver or amendment
is first published, sent or given to holders of Shares and may also be
required to extend the Offer if other conditions are waived, depending upon
the materiality of the waiver.
 
                                       6
<PAGE>
 
  The Company has provided the Purchaser with the Company's stockholder lists
and security position listings for the purpose of disseminating the Offer to
holders of the Shares. This Offer to Purchase, the related Letter of
Transmittal and other relevant materials will be mailed by the Purchaser to
record holders of Shares and will be furnished by the Purchaser to brokers,
dealers, commercial banks, trust companies and similar persons whose names, or
the names of whose nominees, appear on the stockholder lists or, if
applicable, who are listed as participants in a clearing agency's security
position listing, for subsequent transmittal to beneficial owners of Shares.
 
2. PROCEDURE FOR TENDERING SHARES
 
VALID TENDER
 
  For a stockholder validly to tender Shares pursuant to the Offer, either (i)
a properly completed and duly executed Letter of Transmittal (or facsimile
thereof), with any required signature guarantees (or, in the case of a book-
entry transfer, an Agent's Message (as defined below)) and any other documents
required by the Letter of Transmittal must be received by the Depositary at
one of its addresses set forth on the back cover of this Offer to Purchase
prior to the Expiration Date and either certificates for tendered Shares must
be received by the Depositary at one of such addresses prior to the Expiration
Date or such Shares must be delivered pursuant to the procedure for book-entry
transfer set forth below and a Book-Entry Confirmation (as defined below) must
be received with respect to such Shares by the Depositary prior to the
Expiration Date, or (ii) the tendering stockholder must comply with the
guaranteed delivery procedure set forth below.
 
  The Depositary will establish an account with respect to the Shares at The
Depository Trust Company (the "Book-Entry Transfer Facility,") for purposes of
the Offer within two business days after the date of this Offer to Purchase.
Any financial institution that is a participant in the Book-Entry Transfer
Facility's system may make book-entry delivery of Shares by causing the Book-
Entry Transfer Facility to transfer such Shares into the Depositary's account
in accordance with the Book-Entry Transfer Facility's procedures for such
transfer. However, although delivery of Shares may be effected through book-
entry transfer, the properly completed and duly executed Letter of Transmittal
(or facsimile thereof), with any required signature guarantees (or, in the
case of a book-entry transfer, an Agent's Message) and any other required
documents, must, in any case, be transmitted to, and received by, the
Depositary at one of its addresses set forth on the back cover of this Offer
to Purchase prior to the Expiration Date, or the tendering stockholder must
comply with the guaranteed delivery procedure described below. DELIVERY OF
DOCUMENTS TO THE BOOK-ENTRY TRANSFER FACILITY IN ACCORDANCE WITH THE BOOK-
ENTRY TRANSFER FACILITY'S PROCEDURES DOES NOT CONSTITUTE DELIVERY TO THE
DEPOSITARY.
 
  The confirmation of a book-entry transfer of Shares into the Depositary's
account at a Book-Entry Transfer Facility as described above is referred to
herein as a "Book-Entry Confirmation." The term "Agent's Message" means a
message, transmitted by the Book-Entry Transfer Facility to, and received by,
the Depositary and forming a part of the Book-Entry Confirmation, which states
that the Book-Entry Transfer Facility has received an express acknowledgment
from the participant in the Book-Entry Transfer Facility tendering the Shares
that such participant has received and agrees to be bound by the terms of the
Letter of Transmittal and that the Purchaser may enforce such agreement
against the participant.
 
  THE METHOD OF DELIVERY OF SHARES, THE LETTER OF TRANSMITTAL AND ALL OTHER
REQUIRED DOCUMENTS, INCLUDING DELIVERY THROUGH THE BOOK-ENTRY TRANSFER
FACILITY, IS AT THE ELECTION AND RISK OF THE TENDERING STOCKHOLDER. SHARES
WILL BE DEEMED DELIVERED ONLY WHEN ACTUALLY RECEIVED BY THE DEPOSITARY. IF
DELIVERY IS BY MAIL, REGISTERED MAIL, WITH RETURN RECEIPT REQUESTED AND
PROPERLY INSURED, IS RECOMMENDED. IN ALL CASES, SUFFICIENT TIME SHOULD BE
ALLOWED TO ENSURE TIMELY DELIVERY.
 
SIGNATURE GUARANTEES
 
  No signature guarantee is required on the Letter of Transmittal if (1) the
Letter of Transmittal is signed by the registered holder of the Shares (which
term, for purposes of this Section, includes any participant in the
 
                                       7
<PAGE>
 
Book-Entry Transfer Facility's system whose name appears on a security
position listing as the owner of the Shares) tendered therewith, and such
registered holder has not completed either the box entitled "Special Delivery
Instructions" or the box entitled "Special Payment Instructions" on the Letter
of Transmittal or (2) such Shares are tendered for the account of a member
firm of a registered national securities exchange or a member of the National
Association of Securities Dealers, Inc. or a commercial bank or trust company
having an office, branch or agency in the United States (an "Eligible
Institution"). In all other cases, all signatures on the Letters of
Transmittal must be guaranteed by an Eligible Institution. See Instructions 1
and 5 to the Letter of Transmittal. If the certificates for Shares are
registered in the name of a person other than the signer of the Letter of
Transmittal, or if payment is to be made or certificates for Shares not
tendered or not accepted for payment are to be issued to a person other than
the registered holder of the certificates surrendered, the tendered
certificates must be endorsed or accompanied by appropriate stock powers, in
either case signed exactly as the name or names of the registered holders or
owners appear on the certificates, with the signatures on the certificates or
stock powers guaranteed as aforesaid. See Instruction 5 to the Letter of
Transmittal.
 
GUARANTEED DELIVERY
 
  If a stockholder desires to tender Shares pursuant to the Offer and such
stockholder's certificates for Shares are not immediately available, the
procedure for book-entry transfer cannot be completed on a timely basis or
time will not permit all required documents to reach the Depositary prior to
the Expiration Date, such stockholder's tender may be properly effected if all
the following conditions are met:
 
    (i) such tender is made by or through an Eligible Institution;
 
    (ii) a properly completed and duly executed Notice of Guaranteed Delivery
  substantially in the form provided by the Purchaser is received by the
  Depositary, as provided below, prior to the Expiration Date; and
 
    (iii) the certificates for all tendered Shares, in proper form for
  transfer (or a Book-Entry Confirmation with respect to such Shares),
  together with a properly completed and duly executed Letter of Transmittal
  (or facsimile thereof), with any required signature guarantees (or, in the
  case of book-entry transfer, an Agent's Message) and any other documents
  required by the Letter of Transmittal, are received by the Depositary
  within three Nasdaq National Market trading days after the date of
  execution of such Notice of Guaranteed Delivery.
 
  The Notice of Guaranteed Delivery may be delivered by hand to the Depositary
or transmitted by facsimile transmission or mail to the Depositary and must
include a guarantee by an Eligible Institution in the form set forth in such
Notice of Guaranteed Delivery.
 
  Notwithstanding any other provision hereof, payment for Shares accepted for
payment pursuant to the Offer will in all cases be made only after timely
receipt by the Depositary of (i) certificates for (or a timely Book-Entry
Confirmation with respect to) such Shares, (ii) a properly completed and duly
executed Letter of Transmittal (or facsimile thereof), with any required
signature guarantees (or, in the case of a book-entry transfer, an Agent's
Message) and (iii) any other documents required by the Letter of Transmittal.
Accordingly, tendering stockholders may be paid at different times depending
upon when certificates for Shares or Book-Entry Confirmations are actually
received by the Depositary. UNDER NO CIRCUMSTANCES WILL INTEREST BE PAID ON
THE PURCHASE PRICE OF THE SHARES TO BE PAID BY THE PURCHASER, REGARDLESS OF
ANY EXTENSION OF THE OFFER OR ANY DELAY IN MAKING SUCH PAYMENT.
 
  The valid tender of Shares pursuant to one of the procedures described above
will constitute a binding agreement between the tendering stockholder and the
Purchaser upon the terms and subject to the conditions of the Offer.
 
CONVERTIBLE SECURITIES, OPTIONS AND WARRANTS
 
  The Purchaser is not offering to purchase the UUNET Note, any other
convertible securities, the Stock Options, the Warrants or any other options,
warrants or rights to purchase Common Stock, and neither the Purchaser nor the
Company is establishing any special arrangements to facilitate conversions,
exchanges or
 
                                       8
<PAGE>
 
exercises in connection with the Offer. Holders of the UUNET Note, Stock
Options or Warrants who wish to tender Shares in the Offer must first convert
such Note or exercise such Stock Options or Warrants, in each case in
accordance with the terms and provisions thereof, and then tender the Shares
received upon such conversion or exercise pursuant to the Offer. Holders of
the UUNET Note, Stock Options or Warrants who convert such Note or exercise
such Stock Options or Warrants will not have the right to revoke an effective
conversion or exercise, and contingent conversions or exercises will not be
valid. To the extent any such securities are converted into Shares, and the
resulting Shares are tendered but are not purchased pursuant to the Offer
(whether because the Offer is terminated or withdrawn, or by reason of
proration or otherwise), the holders of the instruments so converted will have
lost all rights as a holder of such note, options or warrants. Holders of the
UUNET Note, Stock Options and Warrants who wish to tender Shares issuable
pursuant to such securities are responsible for converting or exercising such
securities in sufficient time that such Shares can be delivered to the
Depositary in a timely manner as required by the Offer. NEITHER THE COMPANY
NOR ITS BOARD OF DIRECTORS MAKES ANY RECOMMENDATION TO ANY HOLDER OF THE UUNET
NOTE, STOCK OPTIONS OR WARRANTS AS TO WHETHER TO CONVERT ANY OR ALL SUCH NOTES
OR EXERCISE ANY OR ALL SUCH STOCK OPTIONS OR WARRANTS, AS THE CASE MAY BE.
 
APPOINTMENT
 
  By executing a Letter of Transmittal as set forth above, the tendering
stockholder will irrevocably appoint the designees of the Purchaser as such
stockholder's attorneys-in-fact and proxies in the manner set forth in the
Letter of Transmittal, each with full power of substitution, to the full
extent of such stockholder's rights with respect to the Shares tendered by
such stockholder and accepted for payment by the Purchaser and with respect to
any and all other Shares or other securities or rights issued or issuable in
respect of such Shares on or after February 10, 1998. All such proxies shall
be considered coupled with an interest in such Shares. Such appointment will
be effective when, and only to the extent that, the Purchaser accepts for
payment Shares tendered by such stockholder as provided herein. Upon such
acceptance for payment, all prior powers of attorney and proxies given by such
stockholder with respect to such Shares or other securities or rights will,
without further action, be revoked and no subsequent powers of attorney and
proxies may be given (and, if given, will not be deemed effective). The
designees of the Purchaser will thereby be empowered to exercise all voting
and other rights with respect to such Shares or other securities or rights in
respect of any annual, special or adjourned meeting of the Company's
stockholders, or otherwise, as they in their sole discretion deem proper. The
Purchaser reserves the right to require that, in order for Shares to be deemed
validly tendered, immediately upon the Purchaser's acceptance for payment of
such Shares, the Purchaser must be able to exercise full voting and other
rights with respect to such Shares and other securities or rights, including
voting at any meeting of stockholders then scheduled.
 
DETERMINATION OF VALIDITY
 
  All questions as to the validity, form, eligibility (including time of
receipt) and acceptance of any tender of Shares will be determined by the
Purchaser in its sole discretion, which determination will be final and
binding. The Purchaser reserves the absolute right to reject any or all
tenders determined by it not to be in proper form or the acceptance for
payment of or payment for which may, in the opinion of the Purchaser's
counsel, be unlawful. The Purchaser also reserves the absolute right to waive
any defect or irregularity in any tender with respect to any particular
Shares, whether or not similar defects or irregularities are waived in the
case of other Shares. No tender of Shares will be deemed to have been validly
made until all defects or irregularities relating thereto have been cured or
waived. None of the Purchaser, the Depositary, the Information Agent, the
Dealer Manager or any other person will be under any duty to give notification
of any defects or irregularities in tenders or incur any liability for failure
to give any such notification. The Purchaser's interpretation of the terms and
conditions of the Offer (including the Letter of Transmittal and the
instructions thereto) will be final and binding.
 
BACKUP WITHHOLDING
 
  In order to avoid "backup withholding" of Federal income tax on payments of
cash pursuant to the Offer, a stockholder surrendering Shares in the Offer
must provide the Depositary with such stockholder's correct
 
                                       9
<PAGE>
 
Taxpayer Identification Number ("TIN") on a Substitute Form W-9 and, unless an
exemption applies, must certify under penalties of perjury that such TIN is
correct and that such stockholder is not subject to backup withholding of
Federal income tax. Certain stockholders (including, among others, all
corporations and certain foreign individuals and entities) are not subject to
backup withholding. If a stockholder does not provide its correct TIN or fails
to provide the required certification on Substitute Form W-9 to the
Depositary, the Internal Revenue Service (the "IRS") may impose a penalty on
such stockholder and payment of cash to such stockholder pursuant to the Offer
may be subject to backup withholding of 31%. All stockholders surrendering
Shares pursuant to the Offer should complete and sign the main signature form
and the Substitute Form W-9 included as part of the Letter of Transmittal to
provide the information and certification necessary to avoid backup
withholding (unless an applicable exemption exists and is proved in a manner
satisfactory to the Purchaser and the Depositary). Foreign individual
stockholders and certain foreign entity stockholders must complete and sign
the main signature form and a Form W-8 (Certificate of Foreign Status), a copy
of which may be obtained from the Depositary, in order to avoid backup
withholding. See Instruction 9 to the Letter of Transmittal. For other Federal
income tax consequences, see Section 5.
 
3. WITHDRAWAL RIGHTS
 
  Except as otherwise provided in this Section 3, tenders of Shares are
irrevocable. Shares tendered pursuant to the Offer may be withdrawn pursuant
to the procedures set forth below at any time prior to the Expiration Date
and, unless theretofore accepted for payment and paid for by the Purchaser
pursuant to the Offer, may also be withdrawn at any time after April 20, 1998.
 
  For a withdrawal to be effective, a written or facsimile transmission notice
of withdrawal must be timely received by the Depositary at one of its
addresses set forth on the back cover of this Offer to Purchase and must
specify the name of the person having tendered the Shares to be withdrawn, the
number of Shares to be withdrawn and the name of the registered holder of the
Shares to be withdrawn, if different from the name of the person who tendered
the Shares. If certificates for Shares have been delivered or otherwise
identified to the Depositary, then, prior to the physical release of such
certificates, the serial numbers shown on such certificates must be submitted
to the Depositary and, unless such Shares have been tendered by an Eligible
Institution, the signatures on the notice of withdrawal must be guaranteed by
an Eligible Institution. If Shares have been tendered pursuant to the
procedures for book-entry transfers as set forth in Section 2 hereof, any
notice of withdrawal must also specify the name and number of the account at
the Book-Entry Transfer Facility to be credited with the withdrawn Shares and
otherwise comply with the Book-Entry Transfer Facility's procedures.
Withdrawals of tenders of Shares may not be rescinded, and any Shares properly
withdrawn will thereafter be deemed not validly tendered for any purposes of
the Offer. However, withdrawn Shares may be retendered by again following one
of the procedures described in Section 2 at any time prior to the Expiration
Date.
 
  All questions as to the form and validity (including time of receipt) of
notices of withdrawal will be determined by the Purchaser in its sole
discretion, which determination will be final and binding. None of the
Purchaser, the Depositary, the Information Agent, the Dealer Manager or any
other person will be under any duty to give notification of any defects or
irregularities in any notice of withdrawal or incur any liability for failure
to give any such notification.
 
4. ACCEPTANCE FOR PAYMENT AND PAYMENT
 
  Upon the terms and subject to the conditions of the Offer (including, if the
Offer is extended or amended, the terms and conditions of any such extension
or amendment), the Purchaser will accept for payment and will pay for
1,250,000 Shares validly tendered prior to the Expiration Date and not
properly withdrawn in accordance with Section 3 promptly after the Expiration
Date. Any determination concerning the satisfaction of such terms and
conditions will be within the sole discretion of the Purchaser, and such
determination will be final and binding on all tendering stockholders. See
Sections 1 and 14. The Purchaser expressly reserves the right, in its sole
discretion, to delay acceptance for payment of or payment for Shares in order
to comply in whole or in part
 
                                      10
<PAGE>
 
with any applicable law, including, without limitation, the HSR Act. Any such
delays will be effected in compliance with Rule 14e-1(c) under the Exchange
Act (relating to the Purchaser's obligation to pay for or return tendered
Shares promptly after the termination or withdrawal of the Offer). In all
cases, payment for Shares accepted for payment pursuant to the Offer will be
made only after timely receipt by the Depositary of (i) certificates for such
Shares (or timely Book-Entry Confirmation of a book-entry transfer of such
Shares as described in Section 2), (ii) a properly completed and duly executed
Letter of Transmittal (or facsimile thereof), with any required signature
guarantees (or, in the case of book entry transfer, an Agent's Message), and
(iii) any other documents required by the Letter of Transmittal. The per Share
consideration paid to any stockholder pursuant to the Offer will be the
highest per Share consideration paid to any other stockholder pursuant to the
Offer.
 
  The Purchaser will file promptly a Notification and Report Form with respect
to the Offer and the other transactions contemplated by the Investment
Agreement under the HSR Act. The waiting period under the HSR Act with respect
to the Offer will expire at 11:59 p.m., New York City time, on the 15th day
after the date such form is filed and the waiting period with respect to the
other transactions contemplated by the Investment Agreement will expire at
11:59 p.m., New York City time, on the 30th day after the date such form is
filed by both the Purchaser and the Company, in each case unless early
termination of the waiting period is granted. In addition, the Antitrust
Division of the Department of Justice (the "Antitrust Division") or the
Federal Trade Commission (the "FTC") may extend such waiting periods by
requesting additional information or documentary material from the Purchaser
or, in the case of the waiting period applicable to the other transactions
contemplated by the Investment Agreement, the Company. If such a request is
made with respect to the Offer, the waiting period related to the Offer will
expire at 11:59 p.m., New York City time, on the 10th day after substantial
compliance by the Purchaser with such request. If such a request is made with
respect to the other transactions contemplated by the Investment Agreement,
the waiting period related to such other transactions will expire at 11:59
p.m. New York City time, on the 20th day after substantial compliance with
such request by each party to whom such a request is made. It is expected that
the Offer will not be consummated until the waiting periods under the HSR Act
with respect to both the Offer and the other transactions contemplated by the
Investment Agreement have expired or have been terminated. See Section 15
hereof for additional information concerning the HSR Act and the applicability
of antitrust laws to the Offer.
 
  For purposes of the Offer, the Purchaser will be deemed to have accepted for
payment, and thereby purchased, Shares properly tendered to the Purchaser and
not withdrawn as, if and when the Purchaser gives oral or written notice to
the Depositary of the Purchaser's acceptance for payment of such Shares.
Payment for Shares accepted for payment pursuant to the Offer will be made by
deposit of the purchase price therefor with the Depositary, which will act as
agent for tendering stockholders for the purpose of receiving payment from the
Purchaser and transmitting payment to tendering stockholders. UNDER NO
CIRCUMSTANCES WILL INTEREST BE PAID ON THE PURCHASE PRICE OF THE SHARES TO BE
PAID BY THE PURCHASER, REGARDLESS OF ANY EXTENSION OF THE OFFER OR ANY DELAY
IN MAKING SUCH PAYMENT.
 
  If the Purchaser is delayed in its acceptance for payment of or payment for
Shares or is unable to accept for payment or pay for Shares pursuant to the
Offer for any reason, then, without prejudice to the Purchaser's rights under
the Offer (but subject to compliance with Rule 14e-1(c) under the Exchange
Act, which requires that a tender offeror pay the consideration offered or
return the tendered securities promptly after the termination or withdrawal of
a tender offer), the Depositary may, nevertheless, on behalf of the Purchaser,
retain tendered Shares, and such Shares may not be withdrawn except to the
extent tendering stockholders are entitled to exercise, and duly exercise,
withdrawal rights as described in Section 3.
 
  If any tendered Shares are not purchased pursuant to the Offer because of an
invalid tender, proration or otherwise, certificates for any such Shares will
be returned, without expense to the tendering stockholder (or, in the case of
Shares delivered by book-entry transfer of such Shares into the Depositary's
account at the Book-Entry Transfer Facility pursuant to the procedure set
forth in Section 2, such Shares will be credited to an account maintained at
the appropriate Book-Entry Transfer Facility), as promptly as practicable
after the expiration or termination of the Offer.
 
                                      11
<PAGE>
 
  The Purchaser reserves the right to transfer or assign, in whole or from
time to time in part, to one or more subsidiaries of the Purchaser, the right
to purchase Shares tendered pursuant to the Offer, but any such transfer or
assignment will not relieve the Purchaser of its obligations under the Offer
and will in no way prejudice the rights of tendering stockholders to receive
payment for Shares validly tendered and accepted for payment pursuant to the
Offer.
 
5. CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
  Sales of Shares pursuant to the Offer will be taxable transactions for
Federal income tax purposes under the Internal Revenue Code of 1986, as
amended (the "Code"), and may also be taxable transactions under applicable
state, local, foreign and other tax laws. For Federal income tax purposes, a
tendering stockholder will generally recognize gain or loss equal to the
difference between the amount of cash received by the stockholder pursuant to
the Offer and the aggregate tax basis in the Shares tendered by the
stockholder and purchased pursuant to the Offer. Gain or loss should be
calculated separately for each block of Shares tendered and purchased pursuant
to the Offer.
 
  If tendered Shares are held by a tendering stockholder as capital assets,
gain or loss recognized by the tendering stockholder will be capital gain or
loss, which will be long-term capital gain or loss if the tendering
stockholder's holding period for the Shares exceeds one year and will be
short-term capital gain or loss if the holding period for the Shares is one
year or less. Under present law, long-term capital gains recognized by a
tendering individual stockholder will generally be taxed at a maximum Federal
marginal tax rate of 39.6% if Shares were held by the stockholder for 12
months or less, at a maximum Federal marginal tax rate of 28% if the Shares
were held by the stockholder for between 12 and 18 months and a maximum
Federal marginal tax rate of 20% if the shares were held by the stockholder
for over 18 months, and long-term capital gains recognized by a tendering
corporate stockholder will generally be taxed at a maximum federal marginal
tax rate of 35%.
 
  A stockholder (other than certain exempt stockholders including, among
others, all corporations and certain foreign individuals and entities) that
tenders Shares may be subject to 31% backup withholding unless the stockholder
provides its TIN and certifies that such number is correct (or properly
certifies that it is awaiting a TIN) and certifies that such stockholder is
not subject to backup withholding. A stockholder that does not furnish its
correct TIN may be subject to a penalty imposed by the IRS. Each stockholder
should complete and sign the Substitute W-9 included as part of the Letter of
Transmittal so as to provide the information and certification necessary to
avoid backup withholding.
 
  If backup withholding applies to a stockholder, the Depositary is required
to withhold 31% from payments made to such stockholder. Backup withholding is
not an additional tax. Rather, the amount of the backup withholding can be
credited against the Federal income tax liability of the person subject to the
backup withholding, provided that the required information is given to the
IRS. If backup withholding results in an overpayment of tax, a refund can be
obtained by the stockholder from the IRS. See Section 2 for instructions to
avoid backup withholding.
 
  THE FOREGOING DISCUSSION MAY NOT BE APPLICABLE WITH RESPECT TO SHARES
RECEIVED PURSUANT TO THE EXERCISE OF EMPLOYEE STOCK OPTIONS OR OTHERWISE AS
COMPENSATION OR WITH RESPECT TO HOLDERS OF SHARES WHO ARE SUBJECT TO SPECIAL
TAX TREATMENT UNDER THE CODE, SUCH AS NON-U.S. PERSONS, LIFE INSURANCE
COMPANIES, TAX-EXEMPT ORGANIZATIONS AND FINANCIAL INSTITUTIONS, AND MAY NOT
APPLY TO A HOLDER OF SHARES IN LIGHT OF ITS INDIVIDUAL CIRCUMSTANCES.
STOCKHOLDERS ARE URGED TO CONSULT THEIR OWN TAX ADVISORS TO DETERMINE THE
PARTICULAR TAX CONSEQUENCES TO THEM (INCLUDING THE APPLICATION AND EFFECT OF
ANY STATE, LOCAL OR FOREIGN INCOME AND OTHER TAX LAWS) OF THE OFFER.
 
6. PRICE RANGE OF THE SHARES; DIVIDENDS ON THE SHARES
 
  The Shares are traded in the over-the-counter market and prices are quoted
on the Nasdaq National Market under the symbol "ELNK." The following table
sets forth, for each of the periods indicated, the high and low
 
                                      12
<PAGE>
 
last reported sales prices per Share as reported by the Nasdaq National Market
and the Dow Jones News Retrieval Service.
 
<TABLE>
<CAPTION>
                                                                  SALES PRICE
                                                                 --------------
                                                                  HIGH    LOW
                                                                 ------ -------
      <S>                                                        <C>    <C>
      1997
        First Quarter (from the date of the Company's initial
         public offering, January 22, 1997)..................... $20.25 $10.125
        Second Quarter..........................................  13.50   8.625
        Third Quarter...........................................  19.50  10.25
        Fourth Quarter..........................................  25.75  16.00
      1998
        First Quarter (through February 17, 1998)...............  48.00  25.125
</TABLE>
 
  On February 10, 1998, the last full day of trading before the public
announcement of the execution of the Investment Agreement, the reported
closing sale price of the Shares on the Nasdaq National Market was $38.625 per
Share. On February 17, 1998 the last full day of trading before the
commencement of the Offer, the reported closing sale price of the Shares on
the Nasdaq National Market was $44.375 per Share. STOCKHOLDERS ARE URGED TO
OBTAIN CURRENT MARKET QUOTATIONS FOR THE SHARES.
 
  According to the Company, it has never declared a cash dividend in respect
of the Shares.
 
7. EFFECT OF THE OFFER ON THE MARKET FOR THE SHARES, STOCK QUOTATION AND
   EXCHANGE ACT REGISTRATION
 
  The purchase of Shares pursuant to the Offer will likely reduce the number
of Shares that might otherwise trade publicly. However, it is expected that a
significant percentage of the outstanding Shares will continue to be held by
persons other than the Purchaser and its affiliates, and the Purchaser does
not believe that its purchase of 1,250,000 Shares pursuant to the Offer is
likely to result in the Company's failure to meet the requirements of the
National Association of Securities Dealers, Inc. for continued inclusion in
the Nasdaq National Market or in the Shares becoming eligible for
deregistration under the Exchange Act or should have a material adverse effect
on the liquidity and market value of the remaining Shares held by the public.
The Merger will have no effect on the number of shares traded publicly.
 
  The Shares are currently registered under the Exchange Act and the Newco
Common Stock will be registered thereunder after the Merger.
 
  The Shares are currently "margin securities" under the regulations of the
Board of Governors of the Federal Reserve System (the "Federal Reserve
Board"), which has the effect, among other things, of allowing brokers to
extend credit on the collateral of the Shares. Following the Offer, the Newco
Common Stock will be "margin securities."
 
8. CERTAIN INFORMATION CONCERNING THE COMPANY
 
  The Company is a Delaware corporation with its principal executive offices
at 3100 New York Drive, Pasadena, California 91107. According to the Company's
Annual Report on Form 10-K for the fiscal year ended December 31, 1996 (the
"Company Form 10-K"), the Company's principal line of business is to serve as
an Internet Service Provider ("ISP") that provides its customers access to the
Internet and information, assistance and services designed to introduce
customers to the Internet and ensure that they have a satisfying Internet
experience. The Company also provides information to its users through an
extensive World Wide Website and bi-monthly printed newsletters to customers.
In addition, the Company offers business services, including business
Websites, high-speed ISDN communications capability and frame relay
connectivity, and consumer services such as multiplayer Internet games and the
EarthLink online store.
 
                                      13
<PAGE>
 
SUMMARY FINANCIAL INFORMATION
 
  Set forth below is certain selected financial information with respect to
the Company derived from the information contained in the Company's Form 10-K
for the year ended December 31, 1996, as well as the Company's Quarterly
Report on Form 10-Q for the quarter ended September 30, 1997, each of which is
incorporated by reference herein. More comprehensive financial information is
included in such reports and other documents filed by the Company with the
Commission, and the following summary is qualified in its entirety by
reference to such reports and such other documents and all the financial
information (including any related notes) contained therein. Such reports and
other documents should be available for inspection and copies thereof should
be obtainable in the manner set forth below under "Available Information."
 
                            EARTHLINK NETWORK, INC.
 
                        SELECTED FINANCIAL INFORMATION
                     (IN THOUSANDS EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                NINE MONTHS
                                   ENDED          YEAR ENDED DECEMBER 31,
                               SEPTEMBER 30, ----------------------------------
                                   1997            1996         1995    1994(1)
                               ------------- ---------------- --------  -------
<S>                            <C>           <C>              <C>       <C>
Statement of Operations Data:
  Total revenues.............    $ 55,167        $ 32,503     $  3,028  $  111
  Loss from operations.......     (22,276)        (30,258)      (6,018)   (148)
  Net loss...................     (23,327)        (31,149)      (6,120)   (148)
  Net loss per share.........       (2.43)          (4.50)       (1.25)  (0.04)
<CAPTION>
                                                              AT DECEMBER 31,
                                             AT SEPTEMBER 30, -----------------
                                                   1997         1996     1995
                                             ---------------- --------  -------
<S>                            <C>           <C>              <C>       <C>
Balance sheet data:
  Total current assets.....................      $ 23,559     $  9,073  $2,253
  Total assets.............................        48,106       27,119   4,874
  Total current liabilities................        28,242       28,279   4,229
  Long-term debt...........................         7,851        6,088     355
  Total Stockholders' equity...............        12,013      (21,261)    290
</TABLE>
- --------
(1) Inception (May 26, 1994) through December 31, 1994
 
  The Company announced its unaudited results of operations for the year ended
December 31, 1997 in a press release dated February 11, 1998, which reflected
revenues, net loss and net loss per share of $79.1 million, ($29.9 million)
and ($2.99), respectively.
 
AVAILABLE INFORMATION
 
  The Company is subject to the reporting requirements of the Exchange Act
and, in accordance therewith, is required to file reports and other
information with the Commission relating to its business, financial condition
and other matters. Information as of particular dates concerning the Company's
directors and officers, their remuneration, stock options granted to them, the
principal holders of the Company's securities and any material interest of
such persons in transactions with the Company is required to be disclosed in
proxy statements distributed to the Company's stockholders and filed with the
Commission. Such reports, proxy statements and other information should be
available for inspection at the public reference facilities of the Commission
located at 450 Fifth Street, N.W., Washington, D.C. 20549, and at the regional
offices of the Commission located in Room 1400, 500 West Madison Street,
Chicago, Illinois 60661 and Seven World Trade Center, 13th Floor, New York,
New York 10048. Copies should be obtainable, by mail, upon payment of the
Commission's customary charges, by writing to the Public Reference Section of
the Commission at 450 Fifth Street, N.W., Washington, D.C. 20549. Such
information should also be on file at the Nasdaq National Market, 1735 K
Street, N.W., Washington, D.C. 20006. The Commission maintains an Internet web
site that contains reports, proxy and information statements and other
information regarding issuers who file electronically with the Commission. The
address for that site is http://www.sec.gov.
 
                                      14
<PAGE>
 
  Except as otherwise stated in this Offer to Purchase, the information
concerning the Company contained herein has been taken from or based upon
publicly available documents on file with the Commission and other publicly
available information. Although the Purchaser does not have any knowledge that
any such information is untrue, the Purchaser does not take any responsibility
for the accuracy or completeness of such information or for any failure by the
Company to disclose events that may have occurred and may affect the
significance or accuracy of any such information.
 
9. CERTAIN INFORMATION CONCERNING THE PURCHASER
 
  The Purchaser is a Kansas corporation with its principal executive offices
at 2330 Shawnee Mission Parkway, Westwood, Kansas 66205. Sprint is a
diversified telecommunications holding company providing domestic and
international voice, video and data communications through its subsidiaries.
Sprint has two major business divisions: local telephone operations and long-
distance operations. Complementary businesses include distribution of
telecommunications equipment and telephone directory publishing. Sprint
operates local exchange telephone systems serving more than 7 million access
lines in 19 states.
 
  Sprint is a 40% partner in Sprint Spectrum Holding Company, L.P. ("Sprint
PCS"), a partnership with Tele-Communications, Inc., Comcast Corporation and
Cox Communications, Inc. Sprint PCS is building the nation's first single
technology, 100% digital, state-of-the-art wireless network to provide
personal communication services ("PCS") across the United States. Sprint is
also a partner in Global One, a joint venture with Deutsche Telekom Ag ("DT")
and France Telecom ("FT") to provide seamless global telecommunications
services to business, residential and carrier markets worldwide. Sprint is a
one-third partner in Global One's operating group serving Europe (excluding
France and Germany), and is a 50% partner in Global One's operating group for
the worldwide activities outside the United States and Europe.
 
  Sprint's principal emerging businesses include consumer Internet access
services, competitive local exchange carrier ("CLEC") services, international
development activities (outside the scope of Global One), provision of PCS in
markets with licenses controlled by Sprint, and integration, management and
support services for computer networks (Paranet).
 
  If the Offer is consummated, Sprint L.P. will assign its SIP Subscribers at
the Closing to the Company, together with certain other consideration, in
exchange for the acquisition of 4,102,941 shares of Convertible Preferred
Stock.
 
  Additional information concerning Sprint and its subsidiaries is contained
in Sprint's Annual Report on Form 10-K for the year ended December 31, 1996
and its Quarterly Reports on Form 10-Q for the periods ended March 31 and June
30 and September 30, 1997.
 
  The name, business address, present principal occupation or employment,
five-year employment history and citizenship of each of the directors and
executive officers of the Purchaser are set forth in Schedule I hereto.
 
SUMMARY FINANCIAL INFORMATION
 
  Set forth below is certain selected financial information with respect to
the Purchaser and its consolidated subsidiaries derived from the information
contained in the Purchaser's Annual Report on Form 10-K for the fiscal year
ended December 31, 1996, as well as the Company's Quarterly Report on Form 10-
Q for the quarter ended September 30, 1997, each of which is incorporated by
reference herein. More comprehensive financial information is included in such
reports and other documents filed by the Purchaser with the Commission, and
the following summary is qualified in its entirety by reference to such
reports and other documents and all the financial information (including any
related notes) contained therein. Such reports and other documents may be
inspected at the Commission's office, and copies thereof may be obtained upon
payment of the Commission's customary charges, in the manner set forth in
Section 8.
 
                                      15
<PAGE>
 
                              SPRINT CORPORATION
 
                  SELECTED CONSOLIDATED FINANCIAL INFORMATION
                     (IN MILLIONS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                     NINE MONTHS
                                        ENDED        YEAR ENDED DECEMBER 31,
                                    SEPTEMBER 30, -----------------------------
                                        1997        1996      1995      1994(1)
                                    ------------- --------- --------- ---------
<S>                                 <C>           <C>       <C>       <C>
Statement of Income Data:
  Net operating revenues...........   $11,059.2   $14,044.7 $12,765.1 $11,986.6
  Operating Income.................     1,840.9     2,267.2   1,834.3   1,690.7
  Net Income.......................       757.6     1,183.8     395.3     890.7
  Earnings per share of common
   stock...........................        1.74        2.78      1.12      2.55
</TABLE>
 
<TABLE>
<CAPTION>
                                                   AT         AT DECEMBER 31,
                                              SEPTEMBER 30, -------------------
                                                  1997        1996      1995
                                              ------------- --------- ---------
<S>                                           <C>           <C>       <C>
Balance sheet data:
  Total current assets.......................   $ 3,686.7   $ 4,352.8 $ 3,619.4
  Total assets...............................    17,621.7    16,953.0  15,195.9
  Total current liabilities..................     3,476.5     3,314.2   5,142.1
  Long-term debt.............................     2,851.2     2,981.5   3,253.0
  Common Stock and other shareholder's
   equity....................................     8,915.3     8,519.9   4,642.6
</TABLE>
 
  Sprint announced its unaudited results of operations for the year ended
December 31, 1997 in a press release dated February 3, 1998 which reflected
revenues, net income and income per share (on a diluted basis) of $14.87
billion, $952.5 million and $2.18, respectively.
 
  Except as described in this Offer to Purchase, (i) none of the Purchaser
nor, to the best knowledge of the Purchaser, any of the persons listed in
Schedule I or any majority-owned subsidiary of the Purchaser, or any of the
persons so listed, beneficially owns any equity security of the Company, and
(ii) none of the Purchaser nor, to the best knowledge of the Purchaser, any of
the other persons referred to above, or any of the respective directors,
executive officers or subsidiaries of any of the foregoing, has effected any
transaction in any security of the Company during the past 60 days.
 
  Except as described in this Offer to Purchase, (i) there have not been any
contacts, transactions or negotiations between the Purchaser, any of its
subsidiaries or, to the best knowledge of the Purchaser, any of the persons
listed in Schedule I, on the one hand, and the Company or any of its
directors, officers or affiliates, on the other hand, that are required to be
disclosed pursuant to the rules and regulations of the Commission, and (ii)
none of the Purchaser or, to the best knowledge of the Purchaser, any of the
persons listed in Schedule I has any contact, arrangement, understanding or
relationship with any person with respect to any securities of the Company.
 
  Except as described in this Offer to Purchase, during the last five years,
none of the Purchaser or, to the best knowledge of the Purchaser, any of the
persons listed in Schedule I (i) has been convicted in a criminal proceeding
(excluding traffic violations and similar misdemeanors) or (ii) was a party to
a civil proceeding of a judicial or administrative body of competent
jurisdiction and as a result of such proceeding was or is subject to a
judgment, decree or final order enjoining future violations of, or prohibiting
activities subject to, Federal or state securities laws or finding any
violation of such laws.
 
10. SOURCE AND AMOUNT OF FUNDS
 
  The total amount of funds required by the Purchaser to purchase Shares
pursuant to the Offer is $56,250,000. Fees and expenses related to the Offer
for the Depositary, the Information Agent, and printing are estimated to be
approximately $175,000. Aggregate fees and expenses of $2,000,000 for the
Dealer Manager and other investment banking and legal services for the
transactions contemplated by the Investment Agreement were not separately
allocated among the constituent transactions such as the Offer. The Purchaser
plans to obtain all funds needed for the Offer from working capital.
 
                                      16
<PAGE>
 
11. CONTACTS WITH THE COMPANY; BACKGROUND OF THE OFFER
 
  Sprint has been advised by the Company that during August, September and
October of 1997, the Company's senior management analyzed the Company's
strategic position in the Internet industry and its prospects for continuing
and accelerating the growth of its business and achieving critical mass in its
subscriber base and greater scale in its operations. In light of this
analysis, management discussed with the Company's Board of Directors (on both
a formal and an informal basis) an array of strategic alternatives designed to
enhance the Company's strategic, operational, financial, marketing and
distribution capabilities.
 
  Sprint has been further advised that, at a regular meeting of the Board of
Directors of the Company held on October 29, 1997, the Board conducted an
open-ended discussion of these alternatives, which included (i) a proposed
strategic alliance with Sprint; (ii) an underwritten equity offering or other
financing transactions; (iii) a significant infusion of equity capital by a
financial investor, the proceeds of which would be used by the Company to make
strategic acquisitions; (iv) a significant equity investment in the Company
by, and/or a joint venture involving the Company with, one or more Regional
Bell Operating Companies; and (v) either alone or in combination with certain
of the foregoing, the making of a business combination proposal to one or more
other providers of Internet services. At the conclusion of this discussion,
the Board did not recommend that any particular alternative be pursued to the
exclusion of others, but rather directed that management take further steps to
explore the availability of various options (without committing the Company to
any alternative without further action of the Board) and periodically report
to the Board on the results of such initiatives. The Board also authorized
senior management and the Company's financial advisor, DMG, to make selective
inquiries to determine whether certain firms in the telecommunications
industry would have any interest in a potential joint venture, strategic
alliance or minority investment relationship with the Company. The Board also
instructed management and DMG not to foreclose the possibility of a business
combination involving the Company, although it believed that the better
approach, in terms of enhancing the Company's long-term value, was to solicit
a strategic alliance or minority investment. Ultimately, no proposals to
effect a business combination emerged. As a result of management's exploratory
initiatives, based on the strategic, operational and financial considerations
described below and Sprint's dynamic and prompt expression of interest in
pursuing a strategic alliance with the Company, the Board determined that
focusing primarily on the Sprint alternative was most likely to produce the
best transaction reasonably available.
 
  During early October, 1997, with the permission of Garry Betty, President
and Chief Executive Officer of the Company, Sidney Azeez, one of the Company's
directors, contacted Carl Peterson, General Manager, President and CEO of the
Kansas City Chiefs, inquiring whether he was acquainted with William T. Esrey,
Chairman and Chief Executive Officer of Sprint Corporation. After learning
that Mr. Peterson and Mr. Esrey were acquaintances, Mr. Betty requested that
Mr. Peterson arrange an introduction so the Company could explore whether
Sprint would have any interest in discussing the possibility of a strategic
alliance or other relationship. Mr. Peterson contacted Sprint and suggested a
meeting during which the companies could discuss their respective businesses
and the possible benefits of a strategic or other relationship.
 
  Theodore H. Schell, Senior Vice President Strategic Planning & Corporate
Development, phoned Mr. Betty on October 8, 1997 to express Sprint's interest
in exploratory discussions and to arrange for a visit by a Sprint
representative to the Company's headquarters in Pasadena, California. On
October 10, 1997, Chuck Chakravarty, Manager Corporate Development, visited
the Company's headquarters in Pasadena, California and had discussions with
Mr. Betty and other members of the Company's management. The discussions
focused on the operational and financial aspects of the Company.
 
  On October 29, 1997, Sprint and the Company executed a reciprocal
confidentiality agreement in which they agreed to maintain the confidentiality
of nonpublic information concerning their businesses. On October 31, 1997, Mr.
Schell, Timothy S. Sutton, Vice President Strategic Planning & Corporate
Development and James Dodd, Vice President Internet Access Services met with
Mr. Peterson, Sky Dayton, Chairman of the Board of the Company, and Mr. Betty
in Kansas City to obtain a strategic overview of the Company's business.
Following that discussion, the participants concluded that there were several
areas of shared perspective with regard to the
 
                                      17
<PAGE>
 
importance of expanded scale in the Internet access business, the
technological evolution of the Internet, and business philosophies regarding
quality of customer service and operations.
 
  In early November, 1997, Mr. Sutton and Mr. Betty had phone conversations
confirming the desire of both parties to engage in further exploration of a
strategic or other relationship. On November 19, 1997, Mr. Sutton, Mr. Dodd
and certain other officers and employees of Sprint met in Pasadena with Mr.
Dayton, Mr. Betty and certain other officers and employees of the Company, and
a representative of DMG, the Company's financial advisor. The Company's
representatives presented a high-level overview of the Company's business from
an operational, financial and strategic perspective. The participants then
engaged in a high-level discussion of possible alternatives for a strategic or
other relationship between Sprint and the Company. Sprint's representatives
discussed the factors of importance to Sprint in assessing a potential
relationship with the Company. These factors included: continued reliance on
the Sprint brand (either alone or co-branded with the Company's brand);
marketing rights to the Internet product; utilization of Sprint's network
services; and the financial implications of the nature and amount of the
investment requisite to scaling up to achieve critical mass and profitability.
Each party expressed the lack of a desire to consider a business combination
or similar type of transaction with the other party at the time. However, each
party expressed an interest in Sprint acquiring a minority equity interest in
the Company if a structure could be developed that would be acceptable from a
strategic, operational and financial point of view.
 
  Additional meetings were held in Pasadena on November 21 and 22, 1997 among
officers and employees of Sprint and the Company to continue discussions of
the strategic, financial and operational characteristics of a strategic
relationship between Sprint and the Company with respect to their Internet
businesses. The possible marketing opportunities and synergies of such an
alliance were also explored. These meetings were followed by several telephone
calls between officers of Sprint and the Company with regard to these matters.
 
  A meeting was held in Pasadena on December 4, 1997 which was attended by
Messrs. Esrey, Schell, Sutton, Dodd, Dayton, Betty and certain other officers
and employees of the Company at which the possible components of a strategic
relationship were discussed. These discussions focused on strategic and
operational matters, including co-branding the Internet access service,
accessing Sprint's marketing and distribution channels, the nature of any
minority investment capital Sprint might make available to the Company and the
opportunity by which Sprint might acquire the equity securities of the Company
not already owned by Sprint and its affiliates at some point in the future.
 
  Further meetings were held in Pasadena on December 11 and 12, 1997 among
Messrs. Sutton, Betty and Dayton, internal Sprint counsel, outside counsel to
the Company, and the financial advisers of Sprint and the Company. These
discussions focused on the valuation of Sprint's in-kind contributions,
including Sprint Internet Passport subscribers, the Sprint brand, access to
the Sprint network and access to the Sprint marketing channels. The
discussions also focused on the terms and structure for a minority investment
by Sprint in the Company, the terms of any credit arrangements Sprint might
provide, governance rights, and the timing and possible approaches under which
Sprint would be permitted in the future to seek to acquire the remaining
equity securities of the Company.
 
  Further meetings were held in Pasadena on December 19 and 20, 1997 to
discuss a proposed preliminary term sheet prepared by Sprint. The term sheet
contemplated that Sprint would acquire a minority interest in the Company
through a cash tender offer. It also contemplated that in exchange for the
contribution of the Sprint Internet Passport subscribers and favorable terms
for access to the Sprint L.P. network, Sprint L.P. would receive a newly
created series of convertible preferred stock from the Company. The parties
also discussed a marketing agreement whereby the parties would jointly brand
their Internet products and Sprint would make its marketing channels available
to the Company with certain exclusivity and sales commitments.
 
  Also involved in the negotiations were terms of a standstill arrangement
which would preclude further acquisitions of the Company's equity securities
by Sprint, except in limited situations designed to ensure the receipt of fair
value by all stockholders in the event Sprint acquired additional equity
securities above agreed upon thresholds. The parties also discussed
convertible debt financing of up to $100,000,000. There were also
 
                                      18
<PAGE>
 
discussions of limited governance rights, stock registration rights,
limitations on the Company soliciting acquisition proposals (subject to the
Board's fiduciary obligations) and other customary rights of a financial
investor. Throughout these and subsequent meetings, considerable negotiations
took place regarding all strategic, operational, financial and governance
aspects of the proposed transactions.
 
  These proposals, counter proposals and revisions were reflected in numerous
further discussion drafts of possible terms which were circulated between
Sprint and the Company and their respective financial and legal advisers.
Conference and telephone calls were held in the latter part of December 1997
and in early January 1998 among various members of management and the
financial and legal advisers to Sprint and the Company to discuss and refine
these proposals. Various members of management and employees of Sprint and the
Company visited Sprint's facilities in Reston, Virginia on December 30, 1997
in an attempt to reach a common view on applicable network economics, network
technologies and engineering set ups.
 
  Meetings among various members of management and the financial and legal
advisers to Sprint and the Company were held during the evening of January 12,
1998 in Kansas City and during the following day to continue negotiation of
the terms of the transactions. Based on these negotiations, the parties agreed
to proceed immediately with the preparation of drafts of definitive agreements
to cover the matters encompassed by the Investment Agreement and Ancillary
Agreements. Numerous conference calls took place after January 12, 1998 to
divide drafting responsibilities, establish schedules and address issues
arising as part of the documentation effort. Prior to January 27, 1998,
initial drafts of most of the documents (and comments on most initial drafts)
were exchanged.
 
  Negotiating sessions were held in Kansas City from January 27 through
February 1, 1998. Negotiations continued thereafter via numerous conference
calls and exchanges of drafts and comments through February 10, 1998, in an
effort to reach agreement on the matters encompassed by the Investment
Agreement and the Ancillary Agreements. Some of the negotiations between legal
counsel for Sprint and the Company occurred in person between February 6 and
February 10, 1998.
 
  An overview of the possible transaction with the Company and related issues
were discussed at Sprint's Board of Directors meeting on December 9, 1997. A
meeting of Sprint's Board of Directors was held on February 10, 1998 and the
execution, delivery and performance of the Investment Agreement, the Ancillary
Agreements and the transactions contemplated thereby were approved.
 
  An overview of the possible transaction and related issues were discussed at
the Company's Board of Directors meeting on January 11, 1998. At a special
meeting held on January 20, 1998, senior management provided the Board with a
report on the status of the negotiations with Sprint and developments with
respect to other potential strategic alternatives. Draft agreements were first
presented to the Company's Board of Directors at a regular meeting held on
February 2, 1998. A special meeting of the Company's Board of Directors was
held on February 10, 1998 and the execution, delivery and performance of the
Investment Agreement, the Ancillary Agreements and the transactions
contemplated thereby were approved.
 
  Following approval by the Board of Directors of Sprint and the Company, the
Investment Agreement and the Ancillary Agreements were executed and delivered
after the close of financial markets in the United States on February 10,
1998. The Offer and the other transactions contemplated by these agreements
were publicly announced before the financial markets in the United States
opened on February 11, 1998.
 
12. PURPOSE OF THE OFFER; THE INVESTMENT AGREEMENT; ANCILLARY AGREEMENTS
 
GENERAL
 
  Sprint and the Company have determined to enter into a strategic alliance to
provide Internet access services and related services on a collaborative
basis. The purpose of the Offer and the related investments being made by
Sprint pursuant to the Investment Agreement is to benefit from the enhanced
capabilities for growth and financial and strategic success by joining forces
with the Company. Immediately after the consummation of the
 
                                      19
<PAGE>
 
Offer, the following transactions will take place pursuant to the Investment
Agreement at the Closing: (i) Sprint will purchase 4,102,941 shares of
Convertible Preferred Stock in exchange for (A) an aggregate cash
consideration of $23,750,000, (B) the assignment to Newco of 100% of the SIP
Subscribers, and (C) Sprint L.P. having entered into the Network Agreement
whereby Newco and the Company will utilize Sprint L.P.'s long-distance network
under specified terms and conditions (the consideration referred to in clauses
(A), (B) and (C) is referred to herein as the "Convertible Preferred Stock
Consideration"), (ii) pursuant to the Marketing Agreement, Newco and the
Company will begin to use Sprint and Sprint L.P. distribution channels and
sell certain Sprint L.P. products under specified terms and conditions,
including the commitment of Sprint to obtain 150,000 subscribers per year for
the Company, and (iii) Sprint will provide Newco and the Company, as co-
borrowers, with up to $25 million of Convertible Debt Financing on or after
the Closing, with such amount to increase by $25 million on each of the first,
second and third anniversary of the Closing Date for a total of $100 million
of such financing at the end of such period, such indebtedness to be evidenced
by one or more Convertible Notes which will be convertible into Newco Common
Stock.
 
  Sprint, Sprint L.P. and Newco have entered into a Governance Agreement which
will become effective at the Closing. The Governance Agreement establishes
certain terms and conditions with respect to the corporate governance of
Newco, the acquisition and disposition of equity securities of Newco by Sprint
and its affiliates (including Sprint's rights, under certain circumstances
described therein, to offer to purchase the outstanding shares of Newco Common
Stock not already owned by Sprint and its affiliates), and the rights of the
Board of Directors of Newco to entertain acquisition proposals and business
combinations. Sprint, Sprint L.P. and certain stockholders of the Company have
also entered into a Stockholders' Agreement which will become effective at the
Closing and which requires such stockholders to support certain offers by
Sprint, whether by vote or tender, under the circumstances described in such
agreement.
 
  Also, concurrently with the Closing of these transactions, other than the
Offer, Newco Sub will merge into the Company and the holders of Common Stock
will receive, in exchange for their shares of Common Stock, an equal number of
shares of Newco Common Stock.
 
THE INVESTMENT AGREEMENT
 
THE OFFER AND THE OTHER TRANSACTIONS CONTEMPLATED BY THE INVESTMENT AGREEMENT
 
  Pursuant to the Investment Agreement, Sprint has commenced the Offer. See
Section 1 for a summary of the material terms of the Investment Agreement
relating to the Offer.
 
  The obligations of Sprint, Sprint L.P., Newco, Newco Sub and the Company to
consummate the transactions contemplated to occur at the Closing other than
the Offer are subject to the satisfaction of the condition that Sprint shall
have accepted for payment shares of Common Stock pursuant to the Offer in
accordance with this Agreement. The conditions to the consummation of the
Offer are described in Section 14.
 
THE MERGER
 
  Immediately following the consummation of the Offer, the Company, Newco and
Newco Sub will effect the Merger whereby Newco Sub, a wholly-owned subsidiary
of Newco, will merge with and into the Company. All of the then issued and
outstanding Shares of Common Stock, including the Shares acquired by the
Purchaser in the Offer, will be converted into an equal number of shares of
Newco Common Stock in the Merger. Upon consummation of Merger, the Company
will be a subsidiary of Newco. Pursuant to the Merger, the Certificate of
Incorporation and Bylaws of Newco Sub will become the Certificate of
Incorporation and Bylaws of the surviving corporation and the Certificate of
Incorporation and Bylaws of Newco will take effect as the constitutive
documents of the corporation whose stock is registered pursuant to the
Exchange Act. The Certificate of Incorporation and Bylaws of Newco are
substantially similar to the Certificate of Incorporation and Bylaws of the
Company, except that the number of authorized shares of Preferred Stock was
increased from 10 million to 25 million and that the scope of indemnification
of officers and directors was increased consistent with the
 
                                      20
<PAGE>
 
Delaware General Corporation Law (the "DGCL"). Also, the directors and
officers of the Company will become the directors and officers of Newco until
their successors have been duly elected or appointed and qualified or until
their earlier death, resignation or removal in accordance with Newco's
Certificate of Incorporation and Bylaws, except that the two directors elected
by the holders of the Convertible Preferred Stock of Newco will be elected
immediately following the Closing.
 
  While the Merger is subject to the approval of the stockholders of the
Company, the votes to be cast pursuant to the Agreement to Vote and Tender
Stock and the Agreement to Vote Stock will ensure approval of the Merger. The
Merger will create a holding company structure which may provide certain
advantages if the scope of the Company's business expands in the future as
well as facilitating the economic efficiency of the strategic relationship
with Sprint.
 
THE ISSUANCE OF CONVERTIBLE PREFERRED STOCK
 
  Concurrently with the Merger, Sprint L.P. will receive 4,102,941 shares of
Convertible Preferred Stock in exchange for the Convertible Preferred Stock
Consideration. Such consideration consists of (i) $23,750,000 of cash, (ii)
Sprint L.P. contributing the SIP Subscribers to Newco, and (iii) Sprint L.P.,
the Company and Newco entering into the Network Agreement.
 
  The Convertible Preferred Stock will be initially convertible into 3,533,411
Shares of Newco Common Stock at the Closing. Based on these figures,
immediately after consummation of the Offer, the Merger and the other
transactions contemplated by the Investment Agreement, the Purchaser would own
approximately 26.6% of the total number of issued and outstanding shares of
Newco Common Stock on a fully diluted basis (that is, assuming that the UUNET
Note has been converted into Shares and that all outstanding Warrants and
Stock Options have been exercised, including the Convertible Preferred Stock).
However, the Convertible Preferred Stock will pay dividends thereon for the
first five years in the form of increases in its Liquidation Value, at a per
annum rate of 3% of the Liquidation Value), which will accrue and compound
quarterly in arrears, but which will accelerate in the event of a Business
Combination (as defined in this Section 12) or an optional redemption of the
Convertible Preferred Stock by Newco. At the Closing, the Liquidation Value
will be the average of the closing price per share of Newco Common Stock for
the thirty (30) trading days prior to the Closing Date. Increases in the
Liquidation Value will have the effect of increasing the number of shares of
Newco Common Stock which the Purchaser will receive upon conversion of the
Convertible Preferred Stock. Assuming that the Convertible Preferred Stock is
held by the Purchaser for the initial five year period, or the Liquidation
Accretion Dividends are accelerated, the Purchaser will be entitled to receive
4,102,941 shares of Newco Common Stock upon conversion thereof. If the fully
diluted number of Shares, as calculated above, were the same at that time, the
Purchaser would then own approximately 28.8% of the total number of issued and
outstanding shares of Newco Common Stock on that basis.
 
  Cash dividends at such rate are payable after five years from the Closing
Date when declared by the Board of Directors of Newco out of funds legally
available therefor and such dividends accumulate if not declared and paid.
After the twentieth anniversary of the Closing Date, such cumulative cash
dividends accrue at the rate per annum of 8% of the Liquidation Value, which
rate increases annually by 200 basis points up to an maximum rate of 12% per
annum. Holders of Convertible Preferred Stock are entitled to a liquidation
preference upon any voluntary or involuntary liquidation, dissolution or
winding up of Newco (" Liquidation Event") in an amount per share equal to the
sum of (i) the average closing price per share of Common Stock for the thirty
(30) trading days preceding the Closing Date, (ii) the amount of all
Liquidation Accretion Dividends that have been paid (including an amount equal
to a prorated dividend for the period from the latest Dividend Accrued Date
through the date of the Liquidation Event), and (iii) all accumulations of
accrued but unpaid cash dividends (such sum is referred to as the Liquidation
Value). Each share of Convertible Preferred Stock initially converts into less
than one share of Newco Common Stock, subject to antidilution adjustments, but
increases to a one-for-one conversion (subject to certain antidilution
adjustments) over a five-year period.
 
 
                                      21
<PAGE>
 
  At Newco's option, the shares of Convertible Preferred Stock are redeemable
after the third anniversary of the Closing Date at a redemption price
initially of 103% of the Liquidation Value and decreasing to 100% of
Liquidation Value by Newco's 2004 fiscal year. The holders of Convertible
Preferred Stock may elect two directors to the Board of Directors of Newco for
so long as they hold 20% or more of Newco's fully diluted shares outstanding
(subject to adjustment for certain dilutive events) and one director for so
long as they hold 10% of such outstanding shares (subject to adjustment for
certain dilutive events). Otherwise, the Convertible Preferred Stock is non-
voting except in the limited circumstances when required under the DGCL.
 
SIP SUBSCRIBERS
 
  Pursuant to the Investment Agreement, concurrently with the Merger, Sprint
L.P. will contribute to Newco all of its SIP Subscribers which at the time of
the execution of the Investment Agreement was approximately 130,000 SIP
Subscribers. Thereafter, the SIP Subscribers shall be subscribers of Newco,
together with all rights under customer contracts and relationships related
thereto. The Investment Agreement provides that if the final number of paid
SIP Subscribers at Closing is less than 130,000, then Sprint L.P. will forfeit
to Newco a number of shares of Convertible Preferred Stock equal to the
product of (i) five, multiplied by (ii) 130,000 less the final number of paid
SIP Subscribers.
 
MARKETING AGREEMENT
 
  Concurrently with the Merger, the Marketing Agreement among Sprint, Sprint
L.P., Newco and the Company will become effective, whereby certain cooperation
and support will be provided to each other in specified marketing matters and
Sprint L.P. will grant to Newco and the Company the right to utilize certain
distribution channels of Sprint. Sprint will also license the use of its brand
to Newco and the Company, and Newco and the Company will agree to use such
brand in conjunction with the Company's brand in the business of the Company,
subject to specified terms and conditions. The Marketing Agreement applies
only to the parties' activities in the 48 contiguous states of the United
States (the "Territory").
 
  Pursuant to the Marketing Agreement, Sprint has appointed Newco and its
controlled affiliates as agents to sell Sprint's long distance services and
certain other telecommunications services as are agreed to by the parties. In
addition, Newco has appointed Sprint and its subsidiaries as agents to sell
Internet-related services offered by Newco and its controlled affiliates. The
Marketing Agreement provides for a joint marketing committee.
 
  The Marketing Agreement also contains certain exclusivity arrangements. The
Marketing Agreement restricts Sprint and its controlled affiliates from
promoting, advertising, marketing, co-branding, packaging, bundling,
developing, offering or selling, or entering into any express or tacit
agreement to permit its name to be used in connection with, a set of Internet-
related products and services (whether as a series of individual products and
services or as an integrated grouping or package of products and services)
that is the same as or substantially similar to the Company's core Internet
service package (the "Core Internet Application Set"), as in effect from time
to time, other than as offered by Newco and its controlled affiliates. Sprint
and its controlled affiliates further agree that they will not bid on, acquire
or directly or indirectly own, manage, operate, join, control or finance, or
participate in the management, operation, control or financing of, any
provider of any set of Internet-related products and services that is the same
as or substantially similar to the Core Internet Application Set (as in effect
from time to time). The Marketing Agreement specifies that these exclusivity
restrictions do not restrict Sprint and its controlled affiliates from (i)
appointing one or more other Internet service providers ("ISP's") as Sprint's
agents for the sale of its branded long distance services and
telecommunications services so long as the Internet-related services provided
by such ISP are not billed on an integrated basis with any services provided
by Sprint, (ii) providing Internet service packages that are designed
primarily for large corporate accounts and offering enhanced features that are
not included in the Core Internet Application Set and (iii) offering or
selling individual components that are included in the Core Internet
Application Set so long as the Company has a first right of refusal to provide
Sprint with such elements or components.
 
 
                                      22
<PAGE>
 
  Newco and its controlled affiliates are restricted from promoting,
advertising, marketing, co-branding, bundling, developing, offering or selling
any long distance services or telecommunications services that are the same as
or substantially similar to the long distance services or telecommunications
services offered by Sprint and its controlled affiliates, other than as
offered by Sprint and its controlled affiliates. Newco and its controlled
affiliates are further prohibited from bidding on, acquiring or directly or
indirectly owning, managing, operating, joining, controlling or financing, or
participating in the management, operation, control or financing of, or acting
as an agent or representative for, or entering into any express or tacit
agreement to permit its name to be used in connection with, or permit its
Internet services to be marketed, sold or distributed by, any "Material
Provider" of long distance services or telecommunication services other than
Sprint and its controlled affiliates. A business or entity is deemed to be a
"Material Provider" of long distance services or telecommunications services
if such business or entity (together with its affiliates) derives from the
sale of long distance services and certain telecommunications services (i)
more than 5% of its gross revenues in any fiscal year or (ii) more than $25
million of gross revenues in any fiscal year. The exclusivity restrictions
will restrict Newco and its controlled affiliates with respect to PCS and
cellular services only if Sprint PCS enters into sales agency relationships
with Newco and its controlled affiliates on the terms set forth in the
Marketing Agreement. Newco and its controlled affiliates are not prohibited
from (i) continuing to offer a co-branded Core Internet Application Set under
currently existing agreements (subject to certain restrictions), (ii) offering
Internet telephony services under certain circumstances, provided that Sprint
has the first right to provide that service at such time as it has developed
an Internet telephony product and (iii) selling ATM and frame relay
telecommunications services of a third party for the sole purpose of providing
access to the public Internet.
 
  Sprint and its controlled affiliates will seek to generate customers for the
Company's Core Internet Application Set through Sprint's customer base and its
third party marketing channels. The Company will pay Sprint varying amounts
for each customer generated by Sprint. In addition, Sprint is obligated to pay
varying shortfall amounts if Sprint fails to generate a minimum number of new
subscribers per year for the Core Internet Application Set in any year during
the five-year period commencing September 1, 1998. Newco and its controlled
affiliates will seek to generate customers for Sprint's long distance and
other telecommunications services from the users of its Core Internet
Application Set. Newco and its controlled affiliates will be entitled to
payment from Sprint of a market rate commission based on the monthly revenue
generated from such customers.
 
  The Company and Sprint have agreed to negotiate a billing and collection
agreement for integrated billing services for Sprint's long distance and
telecommunications services and the Company's Internet services. The Company
will also cooperate with Sprint in developing Internet-related developments
and enhancements that are requested by Sprint.
 
  Sprint and the Company have agreed to use the "EarthLink-Sprint" co-brand in
all of Sprint's marketing, advertising and other similar material relating to
or referencing any of the Company's Internet services and in all of the
Company's marketing, advertising and other similar material used to promote
and offer for sale or otherwise relating to its Internet services and/or
Sprint's long distance services and telecommunications services. Each party
has extended to the other a non-exclusive, royalty-free, non-transferable
license to use its brand in the Territory to the extent described above.
 
  The Marketing Agreement has a 10-year term and may be extended by either
party for an additional five years. The Agreement is subject to early
termination upon the occurrence of certain events, including (i) a change of
control of Sprint or Newco, (ii) a business combination between Sprint and an
entity engaged in a business that is competitive with the Company's Core
Internet Application Set, (iii) the termination of the Governance Agreement
under certain circumstances and (iv) a material breach by either party that is
not cured after notice. Upon termination of the Marketing Agreement under the
circumstances described in clause (ii) above, Sprint will be required to pay a
termination fee to the Company, which will equal $60 million if such
termination occurs during the first two years following the Merger, dropping
to $36 million on the day following the second anniversary of the Merger and
thereafter declining on a daily pro rata basis to zero on and after the fifth
anniversary of the Merger. In case of such termination, Sprint must also pay
an additional fee (up to a maximum of $17.5 million, but declining to zero
after five years) to compensate the Company for the loss of customers that
 
                                      23
<PAGE>
 
would have been generated for the Company through Sprint's marketing channels.
The termination fee described above represents the sole amount that will be
payable by either party upon a termination of the Marketing Agreement, except
for payment obligations accrued prior to termination and damages from the
party's breach of the Marketing Agreement.
 
NETWORK AGREEMENT
 
  Concurrently with the Merger, the Network Agreement between and among Sprint
L.P., Newco and the Company will become effective, whereby Sprint L.P. agrees
to provide, and Newco and the Company agree to utilize, certain dial-up
Internet access Ports ("Ports") for use by the Company's Internet dial-up
access customers. The Network Agreement provides for the provision of a
minimum number of Ports together with the option for the Company to order an
additional quantity of Ports over the initial minimum term of four years.
 
  The Network Agreement sets forth the schedule for implementation of service
in locations and in such quantities as agreed to by the parties. The Network
Agreement also specifies the rates and charges for the use of the Ports during
the initial term and a process for negotiating continued use of the Ports
beyond the initial term. The Network Agreement describes the performance
parameters associated with the Ports and allocates responsibilities for
network and customer support activities between the parties. In addition, the
Network Agreement specifies other commercial terms customarily found in
network service agreements, such as payment terms, force majeure and governing
law.
 
CONVERTIBLE DEBT FINANCING
 
  Concurrently with the Merger, the Credit Agreement will become effective.
Sprint will initially provide up to $25 million in debt financing to be
evidenced by the Convertible Notes. Each year after the Closing Date, the
aggregate amount that Sprint is obligated to advance is increased by $25
million to a maximum of $100 million on a cumulative basis. The Convertible
Notes are convertible into shares of Newco Common Stock at a conversion price
of 130% of the average market price (i.e., the closing sale price over a 30
trading day period) at the time a particular Convertible Note is issued to
evidence an advance under the Credit Agreement. The Convertible Notes bear
interest at a rate equal to 6% per annum.
 
  Sprint's obligation to make advances under the Credit Agreement terminates
upon the earlier of (i) the fifth anniversary of the Closing Date, (ii)
acceleration of the indebtedness evidenced by the Convertible Notes upon an
Event of Default (as defined below), (iii) consummation of a Business
Combination (as defined below), or (iv) termination of the Marketing Agreement
pursuant to certain provisions thereof. An Event of Default shall occur if (i)
there is a breach or there are breaches of any of the representations or
warranties unless such breach or breaches would not in the aggregate have a
Material Adverse Effect on Newco, the Company and their subsidiaries, taken as
a whole, (ii) nonpayment of principal or interest within fourteen (14) days
after the same becomes due, (iii) a breach of certain financial and other
covenants, and in certain cases, a failure to cure such breach within the
applicable cure period, (iv) a default by Newco or the Company in any
agreement or agreements under which indebtedness in excess of $5 million was
created, or the occurrence of any other event or existence of any condition,
the effect of any of which causes, or permits the holder of such indebtedness
to cause, such indebtedness to become due prior to its stated maturity, or any
such indebtedness shall be declared due and payable prior to the stated
maturity thereof, (v) Newco or the Company files for relief under bankruptcy,
receivership, or similar laws, or fails to contest any involuntary petition in
bankruptcy filed with regard to Newco or the Company, (vi) any condemnation of
a substantial portion of the property of Newco or the Company, or (vii) Newco
or the Company fails within thirty (30) days to pay, bond or otherwise
discharge any judgments or orders for the payment of money in excess of $1
million; which are not stayed on appeal or otherwise contested in good faith.
"Material Adverse Effect" is defined to mean any change or effect having a
material adverse effect (or any development as to which there is a substantial
likelihood, insofar as can be foreseen, that would have such an effect) on the
business, properties, assets, condition (financial or otherwise), or results
of operations of the Company, Newco, Newco Sub, Sprint, Sprint L.P. and
Sprint's subsidiaries, as the case may be.
 
                                      24
<PAGE>
 
ACQUISITION PROPOSALS
 
  The Investment Agreement provides that prior to the Closing the Company will
not, nor will it authorize or permit any officer, director or employee, or any
investment banker, attorney or other advisor or representative, of the Company
or any of its subsidiaries to (i) solicit or initiate, or encourage the
submission of, any Acquisition Proposal or (ii) participate in any discussions
or negotiations regarding, or furnish to any person any information with
respect to, or take any other action to expedite any inquiries or the making
of any proposal that constitutes, or may reasonably be expected to lead to,
any Acquisition Proposal. However, to the extent required by the fiduciary
obligations of the Board of Directors of the Company, as determined in good
faith by the Board of Directors based on the advice of outside counsel, the
Company may, (A) in response to an unsolicited request therefor, furnish
information with respect to the Company to any person pursuant to a customary
confidentiality agreement and discuss such information with such person, (B)
upon receipt by the Company of an Acquisition Proposal, following delivery to
the Purchaser of the required notice, participate in negotiations regarding
such Acquisition Proposal and (C) modify or withdraw its recommendation that
the stockholders of the Company accept the Offer or its recommendation to such
stockholders that they vote in favor of the transactions contemplated by the
Investment Agreement. Neither the Company nor its Board of Directors may,
under any circumstances, (A) terminate the Investment Agreement or any of the
Ancillary Agreements or withdraw its approval of such agreements, or (B)
approve or authorize the solicitation, initiation or encouragement of
additional Acquisition Proposals.
 
  In addition to the obligations of the Company set forth in the preceding
paragraph, the Investment Agreement provides that the Company shall promptly
advise the Purchaser of the existence of any request for information or of any
takeover proposal, or any inquiry with respect to, or which could lead to, any
Acquisition Proposal.
 
  The Investment Agreement further provides that the Company shall not take
any action that would enhance the ability of any other person proposing a
takeover proposal to obtain the approval of the Company's stockholders or
otherwise consummate such Acquisition Proposal without also taking a
comparable action that would similarly enhance the ability of the Purchaser to
obtain any necessary approval of the Company's stockholders of, and otherwise
to consummate, the transactions contemplated in the Investment Agreement and
the Ancillary Agreements or an alternative transaction initiated by the
Purchaser and concurrently withdrawing any impediments thereto that do not
similarly impede such other person.
 
  The Investment Agreement provides that nothing contained therein shall
prohibit the Company from taking and disclosing to its stockholders a position
contemplated by Rule 14e-2 promulgated under the Exchange Act.
 
TRANSACTION COSTS
 
  The Investment Agreement provides that all fees and expenses incurred in
connection with the Offer, the Investment Agreement and the transactions
contemplated thereby and the Ancillary Agreements shall be paid by the party
incurring such fees or expenses, whether or not the Offer or other
transactions contemplated by the Investment Agreement are consummated.
However, one-half of the reasonable out-of-pocket expenses incurred by the
Company in preparing the Proxy Statement and the S-4 Registration Statement,
printing and mailing the Proxy Statement, the Commission filing fees for the
S-4 Registration Statement and in holding the special meeting of Company
stockholders to approve the Merger shall be paid by the Purchaser.
 
CONDUCT OF BUSINESS BY THE COMPANY
 
  The Investment Agreement provides that during the period from the date of
the Investment Agreement to the Closing Date, the Company shall carry on its
business in the usual, regular and ordinary course in substantially the same
manner as theretofore conducted and, to the extent consistent therewith, use
all reasonable efforts to preserve intact its current business organizations,
keep available the services of its current officers and other employees and
preserve its relationships with customers, suppliers, licensors, licensees,
distributors, joint
 
                                      25
<PAGE>
 
ventures and others having business dealings with it except to the extent that
the failure to do so would not have a Material Adverse Effect on the Company.
In addition, during the period from the date of the Investment Agreement to
the Closing Date, the Company shall not, without first consulting with the
Purchaser take certain material actions relating to, among other matters,
dividends, acquisitions, dispositions, capital issuances or changes in capital
structure, research and development agreements, incurrence of indebtedness,
capital expenditures and satisfaction of claims.
 
TERMINATION OF THE INVESTMENT AGREEMENT
 
  The Investment Agreement may be terminated at any time prior to the Closing
Date (i) by mutual written consent of the parties thereto, (ii) by any of the
parties if the Offer has not been consummated on or before June 15, 1998,
(iii) by the Purchaser and Sprint L.P. if any of the conditions to the
obligations of the Purchaser and Sprint L.P. with respect to Offering shall
have become incapable of fulfillment, and shall not have been waived by the
Purchaser, or (iv) by the Company, Newco and Newco Sub if any of the
conditions precedent to Sprint's right to consummate the Offer shall have
become incapable of fulfillment and shall not have been waived by the Company,
Newco and Newco Sub.
 
REPRESENTATIONS AND WARRANTIES
 
  The Investment Agreement contains various customary representations and
warranties made by the parties thereto which will not survive the Closing
except for survival thereof for 24 months in the case of fraud or willful
material breaches of such representations and warranties.
 
THE GOVERNANCE AGREEMENT
 
GENERAL
 
  In connection with the Investment Agreement, Sprint, Sprint L.P., Newco and
the Company entered into the Governance Agreement, which will take effect upon
the Closing. The Governance Agreement establishes certain terms and conditions
concerning the corporate governance of Newco, the acquisition and disposition
of equity securities of Newco ("Equity Securities") by Sprint, Sprint L.P. and
any of their respective affiliates (collectively, "Affiliated Equity
Holders"), the rights of Sprint to make offers to purchase all of the
outstanding securities of Newco not owned by Affiliated Equity Holders and the
rights of the Board of Directors of Newco to receive and entertain offers to
effect "Business Combinations" (as defined below), all as more particularly
described in the Governance Agreement. The following summary is qualified in
its entirety by the express terms of the Governance Agreement, which has been
filed with the Commission as an exhibit to the Purchaser's Tender Offer
Statement on Schedule 14D-1.
 
CORPORATE GOVERNANCE
 
  The Governance Agreement establishes that the fundamental policies and
strategic direction of Newco, the Company and any significant subsidiary of
Newco will be determined by their respective Boards of Directors. Consistent
with the voting rights granted to the holders of Convertible Preferred Stock,
the Governance Agreement provides for two individuals to be designated as
"Investor Directors." Similarly, following conversion of the Convertible
Preferred Stock into Newco Common Stock, Newco and the Company are obliged to
elect the individuals designated as "Investor Directors" to their respective
Boards of Directors. In addition, the Governance Agreement permits one
Investor Director to participate on any Strategic Business Planning Committee,
Finance Committee or other significant committee of the Board of Directors of
Newco, the Company or any significant subsidiary, to the extent those
committees exist. If there is no such committee, the Governance Agreement
allows Sprint a reasonable opportunity to review and discuss Newco's strategic
and business plans and financing plans with the management of Newco prior to
the submission of any such plan to the Board of Directors, and to receive
advance copies of information and materials to be provided to the Board of
Directors with respect to such matters. Notwithstanding the foregoing, no
Investor Director is entitled to participate on any
 
                                      26
<PAGE>
 
committee of the Board of Directors of Newco, the Company or any significant
subsidiary created for the purpose of considering a Business Combination or
any matter related thereto (including a "Sprint Offer" or a "Qualified Offer,"
as described in more detail below), or to participate in the Board's
deliberations with respect to any of the foregoing. Consistent with the terms
of the Convertible Preferred Stock, Sprint is entitled to two Investor
Directors for so long as it holds 20% or more of Newco's fully diluted shares
outstanding (subject to adjustment for certain dilutive events, the "Higher
Threshold"), and one Investor Director for so long as it holds 10% or more of
Newco's fully diluted shares outstanding (subject to adjustment for certain
dilutive events, the "Lower Threshold").
 
  At such time as the Convertible Preferred Stock has been converted into
Newco Common Stock, the Governance Agreement obligates Newco to use its best
efforts to solicit from its stockholders proxies in favor of Sprint's Investor
Director nominees. The Governance Agreement also obligates the Affiliated
Equity Holders to vote in favor of any other nominee or director selected by
the Board of Newco in accordance with the agreement. The voting obligations of
Affiliated Equity Holders under the Governance Agreement are supported by an
"Irrevocable Proxy" granted by Sprint and Sprint L.P. to Newco and the
Company. See "--Irrevocable Proxies."
 
  For so long as "Sprint's Percentage Interest" (a term that measures Sprint's
equity stake in Newco, including its ownership of both Newco Common Stock and
Convertible Preferred Stock, as a percentage of Newco's fully-diluted stock
outstanding) is greater than the Lower Threshold, Newco is prohibited from
taking or authorizing certain actions without the concurrence of all Investor
Directors serving in such capacity at that time. These actions include (i) the
execution or performance of any "Discriminatory Transaction" (as defined
below); (ii) the issuance of any class or series of stock of Newco that
provides for voting rights in excess of one vote per share; (iii) certain
events involving the dissolution or liquidation of Newco or any subsidiary
thereof, or the commencement by or with respect to Newco or any subsidiary
thereof of certain bankruptcy or bankruptcy-related events or proceedings;
(iv) the conduct by Newco or any significant subsidiary of business
substantially outside its current general field of enterprise; or (v) the
issuance by Newco of "Transaction Securities" (Equity Securities of Newco
issued in connection with joint ventures, strategic alliances, acquisitions,
mergers and other business combination transactions) representing (A) in any
twelve-month period, in one or more transactions, 50% or more of the number of
shares of Newco Common Stock outstanding prior to giving effect to such
issuances, or (B) in any one transaction, 35% or more of the number of shares
of Newco Common Stock outstanding prior to giving effect to such issuance.
 
  The term "Discriminatory Transaction" is defined in the Governance Agreement
as any transaction or corporate action that would (i) impose limitations on
the legal rights of any Affiliated Equity Holder as a stockholder of Newco,
(ii) deny any benefit to any Affiliated Equity Holder, proportionately as a
holder of any class of voting Equity Securities, that is made available to
other holders, or (iii) otherwise materially adversely discriminate against
any Affiliated Equity Holders as stockholders of Newco. However, excepted from
the definition of Discriminatory Transactions are various transactions,
including (A) the adoption and implementation by Newco of a Stockholders'
Rights Plan, (B) the adoption and implementation by Newco of a classified
Board of Directors, (C) a Business Combination if in that transaction (x)
neither the Liquidation Value nor the Conversion Price of the Convertible
Preferred Stock is changed, and (y) upon consummation of such transaction, the
holders of Convertible Preferred Stock are offered the right to receive
consideration at the same times, in the same amount and the same form per
share as all other holders of Newco Common Stock, (D) any transaction having a
discriminatory effect against any Affiliated Equity Holder that occurs as a
result of a material breach or violation by any such holder of the Governance
Agreement, and (E) the execution by Newco, the Company or any significant
subsidiary of a definitive agreement with respect to a Business Combination,
if such agreement meets certain requirements set forth in the Governance
Agreement. See "--Purchases of Additional Equity Securities; Business
Combinations."
 
EQUITY PURCHASES FROM THE COMPANY; SUBSCRIPTION RIGHTS
 
  So long as Sprint's Percentage Interest is greater than an amount defined as
the "Top-Up Threshold" (20%, subject to adjustment for certain dilutive events
and for Newco's incurrence of indebtedness under the
 
                                      27
<PAGE>
 
Convertible Debt Financing), the Affiliated Equity Holders have certain anti-
dilution and subscription rights set forth in Article III of the Governance
Agreement. In addition to their rights to subscribe for stock of Newco
directly from Newco, Sprint may effect its rights under Article III by making
purchases of Equity Securities at any time from any person other than Newco as
long as, after giving effect to such purchases, Sprint's Percentage Interest
is less than or equal to the "Pro Rata Share," a formula that limits the
maximum equity stake in Newco that the Affiliated Equity Holders may have. The
Pro Rata Share, which adjusts only upon the incurrence of indebtedness by
Newco under the Convertible Debt Financing, has been established, as of the
date of the Governance Agreement, at an amount equal to .278.
 
  Upon proposing to issue "New Securities" (other than New Securities that are
"Transaction Securities"), if Sprint's Percentage Interest is greater than the
Top-Up Threshold, Newco must provide Sprint written notice of its intent to
effect such issuance at least five business days prior to the date on which
the meeting of the Board is to be held to authorize such issuance. For a
period of ten business days after Sprint's receipt of such notice, Sprint has
the right to purchase the Pro Rata Share of such issuance and, if it does so,
the Equity Securities offered pursuant to such notice shall be issued and sold
to Sprint by Newco at the same times and on the same terms and conditions as
the New Securities are issued and sold to third parties. If for any reason the
issuance of such New Securities to third parties is not consummated, Sprint's
right to purchase its Pro Rata Share of such issuance shall lapse.
 
  As noted above, Sprint's general subscription rights do not apply to the
issuance of Transaction Securities. However, if Newco determines that Sprint's
Percentage Interest has decreased by .05 or more as a result of issuances of
Transaction Securities, Newco must notify Sprint of such event. In addition,
not later than the second anniversary of Sprint's receipt of that notice (the
"Window Period"), Newco is obligated to make written offers (each, a "Primary
Share Offer") to Sprint to purchase, in the aggregate, a number of shares
sufficient to enable Sprint to bring Sprint's Percentage Interest up to the
amount in effect prior to the issuances of Transaction Securities. The number
of shares Newco is obligated to offer pursuant to such provision is defined in
the Governance Agreement as the "Available Top-Up Shares" and the aggregate
number of Available Top-Up Shares resulting from all issuances of Transaction
Securities is defined as the "Aggregate Number of Top-Up Shares." Sprint may
accept a Primary Share Offer within five business days of its receipt thereof,
and the offer is to be made at a purchase price equal to an average stock
price for Newco Common Stock for the ten trading days prior to the date of
such issuance, less the underwriting discount applied in the most recent
underwritten offering of Newco Common Stock.
 
  If Newco determines that Sprint's Percentage Interest has decreased by .10
or more solely as a result of the issuance of Transaction Securities (after
giving effect to any and all Primary Share Offers), the Window Period shall be
accelerated such that Newco shall be obligated to make one or more Primary
Share Offers with respect to not less than the Aggregate Number of Top-Up
Shares, as then calculated, at the earlier of (i) the expiration of the Window
Period, as determined above, or (ii) six months after the date Sprint receives
notice to that effect from Newco. Notwithstanding anything else in the
Governance Agreement to the contrary, in no event is Newco obligated to make
Sprint a Primary Share Offer that, after giving effect to such transaction,
would cause Sprint's Percentage Interest to exceed the Pro Rata Share.
 
  In addition, with respect to a purchase of New Securities pursuant to
Article III of the Governance Agreement, Sprint may, at its option, purchase
New Securities in the form of "Alternative Securities" convertible into the
applicable number of shares of Newco Common Stock. "Alternative Security" is
defined as a new series of Preferred Stock having terms that are structured
and priced in the same manner as the Convertible Preferred Stock. Such terms
are determined, if applicable, by reference to the average stock price for a
share of Newco Common Stock for the 30 trading days prior to the date of
issuance of such Alternative Securities. Sprint's purchase of New Securities
in the form of Alternative Securities are limited (i) to not more than 75% of
any issuance of New Securities from the Closing to the second anniversary
thereof, (ii) to not more than 66.67% of any issuance of New Securities after
the second anniversary of the Closing until the third anniversary thereof
 
                                      28
<PAGE>
 
and (iii) after the third anniversary, Newco is not obligated to issue any New
Securities in the form of Alternative Securities.
 
STANDSTILL PROVISIONS
 
  The Governance Agreement sets forth certain "Standstill Provisions"
applicable to Affiliated Equity Holders. These Standstill Provisions are
summarized below. See "--Effectiveness; Termination; Survival" for additional
information concerning the survival of the Standstill Provisions following
termination of the Governance Agreement.
 
  Except for purchases of shares and related activities by Sprint otherwise
permitted under the Governance Agreement, the Affiliated Equity Holders may
not, directly or indirectly, (i) acquire, offer to acquire or agree to acquire
any Equity Securities, or any equity securities of any subsidiary of Newco, or
material assets of Newco or any subsidiary or division of Newco; (ii) make or
participate in any "solicitation" of proxies or otherwise seek to influence
any person with respect to the voting of any voting Equity Securities of
Newco; (iii) make any public announcement with respect to, or submit a
proposal for, or offer to effect any purchase of any significant portion of
the assets of Newco or any subsidiary or division of Newco, any tender or
exchange offer for any Equity Securities of Newco, or a merger, consolidation
or other extraordinary transaction involving Newco or any of its Equity
Securities; (iv) form, join or in any way participate in a "group" as defined
in Rule 13d-5(b) under the Exchange Act; or (v) request Newco or any of its
representatives to amend or waive any provision of the foregoing.
 
  In addition, the Affiliated Equity Holders may not, directly or indirectly,
sell, transfer or otherwise dispose of any Equity Securities except (i)
pursuant to a registered underwritten public offering in accordance with the
Registration Rights Agreement, (ii) in accordance with Rule 144 under the
Securities Act, (iii) to any direct or indirect subsidiary of Sprint and (iv)
in a transaction effected in accordance with the so-called "Section 4(1 1/2)"
exemption under the Securities Act. In addition, notwithstanding the
foregoing, none of the Affiliated Equity Holders may sell, transfer or
otherwise dispose of any equity interest in any Equity Securities to any
purchaser or group of purchasers if, after giving effect to such sale, such
purchaser or group of purchasers would, to Sprint's knowledge, own, or have
the right to acquire, 5% or more of the Equity Securities then outstanding,
except to any person that is not obligated (or would not, by virtue of such
purchase, reasonably be anticipated to be obligated) to file a Schedule 13D
with the Commission pursuant to each of paragraphs (b) and (e) of Rule 13d-1
under the Exchange Act.
 
PURCHASES OF ADDITIONAL EQUITY SECURITIES; BUSINESS COMBINATIONS
 
  Following the 39-month anniversary of Closing and prior to the 63-month
anniversary of Closing (the "Right to Offer Period"), Sprint shall have the
right to make a "Sprint Offer," by offering to purchase all (but not less than
all) of the outstanding Equity Securities that it does not already own at a
price per share equal to the per share price determined by dividing the "Fair
Private Market Value" by the total number of shares of Newco Common Stock
outstanding on a fully-diluted basis. The "Fair Private Market Value" is
defined as the aggregate private market equity value (including control
premium) that an unrelated third party would pay if it were to acquire all of
Newco's outstanding Equity Securities (including Equity Securities held by
Affiliated Equity Holders) in an arm's length transaction, assuming (i) that
all credible buyers are given an equal opportunity by Newco to make and
effectuate an Acquisition Proposal with respect to Newco, (ii) the absence of
any commercial relations between Newco and the Company, on the one hand, and
Sprint and its affiliates, on the other hand, and (iii) the absence of any
ownership stake in Newco by Affiliated Equity Holders. The Fair Private Market
Value is to be determined as follows.
 
  The respective Boards of Newco and Sprint shall negotiate the amount of the
Fair Private Market Value to be paid pursuant to the Sprint Offer. In the
event the two parties are unable to agree on this amount, within 30 days after
submission of the Sprint Offer to the Board, the parties shall agree to be
bound to the valuation arrived at pursuant to the following formula: (i) two
appraisals shall be made by recognized investment banks, one
 
                                      29
<PAGE>
 
selected by each of Sprint and Newco (the "Initial Values"), (ii) if the lower
of the Initial Values is more than 10% less than the higher, a third
independent valuation will be made by an investment bank jointly selected by
Newco and Sprint (the "Independent Valuation"); otherwise, the Fair Private
Market Value shall be the average of the Initial Values; and (iii) if the
Independent Valuation is greater or less than the average of the Initial
Values by more than 5%, the Fair Private Market Value shall be deemed to equal
the average of the two closest valuations. If the Independent Valuation does
not differ by such amount, it shall be the Fair Private Market Value.
 
  A Sprint Offer shall not be subject to any financing contingency, and shall
be reflected in a form of definitive agreement that Sprint is prepared to
execute. The conditions to consummation of the Sprint Offer and the
representations and warranties set forth therein shall be reasonable and
customary for transactions in which a similarly situated stockholder offers to
purchase all of the Equity Security not held by such stockholder or its
affiliates.
 
  The Board of Directors of Newco shall have a one-time right, exercisable
within 14 days after receipt of the Sprint Offer, to postpone the making of
that offer for nine months. Upon exercise of such right, Sprint is obligated
to withdraw the Sprint Offer for a period of nine months, provided that (i)
the Right to Offer Period shall be extended to the 72-month anniversary of
Closing and (ii) the exercise by Newco of its postponement right shall not
limit Sprint's right to respond to a "Third-Party Offer" as set forth below.
 
  In addition, upon the determination of the amount of the Fair Private Market
Value, Sprint shall be obligated to commence and effectuate the Sprint Offer,
provided that Sprint shall have a one-time right, exercisable within 14 days
after receipt of the determination of Fair Private Market Value, to determine
not to proceed to make such Sprint Offer. There are, however, certain
limitations on Sprint's exercise of this "Walk-Away Right." If Sprint does not
exercise such right, the Board of Directors of Newco shall, unless an
"Intervening Offer" (as defined below) is then outstanding, (i) support the
Sprint Offer by approving and recommending it to Newco's stockholders and (ii)
cause Newco to take all steps reasonable and necessary to facilitate
consummation of such Sprint Offer. However, at such time as a "Third-Party
Offer" shall constitute an Intervening Offer, Sprint shall be released from
its obligation to commence and effectuate the Sprint Offer, and Newco shall be
released from its obligation to support and facilitate consummation of the
Sprint Offer. If the Intervening Offer is undertaken in the form of a tender
offer, at the consummation of such tender offer, the offeror shall have an
option to purchase from all Affiliated Equity Holders, at the tender offer
price, in the aggregate, a "Specified Number of Equity Securities" (a number
of Equity Securities owned by Affiliated Equity Holders equal to the
proportion of Equity Securities held by unaffiliated equity holders and
tendered into or voted for a competing Business Combination), less the number
of Equity Securities that have already been tendered to such offeror. In
addition, if the Intervening Offer (or a related matter) must be approved by
the stockholders of Newco in order for such offer to be effectuated, the
Affiliated Equity Holders are obligated to cast in favor of the Intervening
Offer (and such related matters) such number of votes as is equal to the
Specified Number of Equity Securities, provided that the Business Combination
does not constitute a Discriminatory Transaction. Affiliated Equity Holders
are not entitled to exercise rights of appraisal with respect to any Business
Combination effected in connection with an Intervening Offer.
 
  The Governance Agreement defines an Intervening Offer as an offer for
aggregate consideration reasonably determined in good faith by the Board of
Newco to be in excess of the aggregate consideration proposed to be paid by
Sprint in a Sprint Offer or a "Qualified Offer" by Sprint (as defined below),
as applicable. The conditions to consummation of an Intervening Offer and the
representations, warranties and covenants set forth in the Intervening Offer
shall be customary for a transaction of that type.
 
THIRD-PARTY OFFERS
 
  Newco is obligated to provide Sprint with prompt written notice of its
receipt of a bona fide, written offer to effect a Business Combination from a
third party ("Offer"). Upon receipt of such Offer, the Board is to determine
whether it intends to recommend that offer to the stockholders (a "Recommended
Third-Party Offer")
 
                                      30
<PAGE>
 
or that such offer is not in the best interests of Newco's stockholders, in
which event it intends not to recommend such offer to the stockholders (a
"Non-Recommended Third-Party Offer" and, together with a Recommended Third-
Party Offer, a "Third-Party Offer").
 
  For a period of ten days following the giving of notice of receipt of an
Offer, Newco may not enter into a definitive agreement with respect to that
Offer. Sprint has an option to make a "Qualified Offer" with respect to either
(i) an Offer that is a Recommended Third-Party Offer or (ii) an Offer that is
a Non-Recommended Third-Party Offer if the Board of Sprint reasonably
determines that the conditions to the Non-Recommended Third-Party Offer are
reasonably likely to be satisfied and the Offer consummated. A "Qualified
Offer" is defined as an offer made by an Affiliated Equity Holder to acquire
all of the Equity Securities not already owned by the Affiliated Equity
Holders at a price per share in excess of the equivalent per share price set
forth in a Third-Party Offer or an Intervening Offer, as the case may be. A
Qualified Offer shall be reflected in a form of definitive agreement that
Sprint is prepared to execute, and the conditions to consummation of such
offer and the representations, warranties and covenants set forth in it shall
be customary for transactions in which a similarly situated stockholder offers
to purchase all of the Equity Securities not held by such stockholder and may
not, in any event, be more onerous in any material respect than those set
forth in the Third-Party Offer or the Intervening Offer, as the case may be.
 
  Newco may not adopt any takeover defenses, enter into any agreement or take
any other action in connection with a Recommended Third-Party Offer that would
materially impair Sprint's ability to make and consummate a Qualified Offer or
materially increase Sprint's cost of consummating a Qualified Offer. However,
notwithstanding the foregoing, Newco is permitted to enter into a definitive
agreement with respect to a Recommended Third-Party Offer that provides for a
termination fee not to exceed 3% of the consideration to be received per share
of Newco Common Stock multiplied by the number of shares of Newco Common Stock
outstanding on a fully diluted basis (less the number of shares beneficially
owned by the offering party), plus customary fees and expenses. Nevertheless,
the definitive agreement with respect to such Recommended Third-Party Offer
must provide that such fees and expenses shall not be payable if Sprint makes
a Qualified Offer within 72 hours of the first public announcement of such
Recommended Third-Party Offer.
 
  If Sprint has the option to make a Qualified Offer and does so more than
five days prior to the date of a stockholders' meeting held to consider a
Third-Party Offer or an Intervening Offer, the Board of Directors shall,
unless an Intervening Offer is then outstanding, support the Qualified Offer
by approving and recommending it to Newco's stockholders and cause Newco to
take all steps reasonable and necessary to facilitate consummation of the
Qualified Offer. However, at such time as a Third-Party Offer made subsequent
to a Qualified Offer shall constitute an Intervening Offer, Newco's
obligations to support and facilitate a Qualified Offer shall terminate and
Newco shall be free to consider and act upon such Intervening Offer. Sprint is
nonetheless entitled, at any time prior to consummation of the Intervening
Offer, to make another Qualified Offer, and in such event, the most recent
Third-Party Offer shall cease to constitute an Intervening Offer.
 
  If a Recommended Third-Party Offer or an Intervening Offer is undertaken in
the form of a tender offer, at the consummation of such tender offer, the
offeror shall have an option, to purchase from all Affiliated Equity Holders,
at the tender offer price, in the aggregate, a Specified Number of Equity
Securities, less the number of Equity Securities that have already been
tendered to such offeror. In addition, if a Recommended Third-Party Offer or
an Intervening Offer, as the case may be (or a related matter) must be
approved by the stockholders of Newco in order for such offer to be
effectuated, the Affiliated Equity Holders are obligated to cast in favor of
such offer (and such related matter) such number of votes as is equal to the
Specified Number of Equity Securities, provided that the Business Combination
does not constitute a Discriminatory Transaction. Affiliated Equity Holders
are not entitled to exercise rights of appraisal with respect to any Business
Combination effected in connection with a Recommended Third-Party Offer or
Intervening Offer.
 
  The Governance Agreement defines "Business Combination" to mean a
transaction, undertaken in any form whatsoever, involving (i) the purchase or
acquisition of Equity Securities if the consummation of such transaction would
result in the purchaser beneficially owning 35% or more of the Equity
Securities outstanding,
 
                                      31
<PAGE>
 
or (ii) a merger, consolidation, combination or other extraordinary
transaction with respect to Newco in which, upon consummation thereof, the
shareholders or owners of the other entity that is a party thereto, or the
controlling persons thereof, would acquire beneficial ownership of 50% or more
of the Equity Securities outstanding. The term Business Combination includes a
"Significant Sale," which means the sale of assets of Newco or any subsidiary
or the sale of capital stock of any subsidiary by Newco, in any such case, for
which the consideration proposed to be paid in such transaction represents 35%
or more of the market capitalization of Newco on the date that Newco agrees to
such sale.
 
SOLICITATION OF OFFERS
 
  From the Closing Date until the earlier of the 27-month anniversary of such
date or the termination of the Governance Agreement in accordance with its
terms, Newco may not, directly or indirectly, (i) solicit or initiate, or
encourage the submission of, any "Acquisition Proposal" (as defined below), or
(ii) participate in any discussions or negotiations regarding, or take any
action that may reasonably be expected to lead to any Acquisition Proposal.
However, to the extent required by the fiduciary obligations of the Board of
Directors, as determined in good faith by the Board based on the advice of
outside counsel, Newco may (A) furnish information in response to any
unsolicited requests therefor and discuss such information, (B) upon receipt
by Newco of an Acquisition Proposal, following delivery to Sprint of notice
thereof, participate in negotiations regarding such Acquisition Proposal and
(C) enter into an agreement respecting such Acquisition Proposal or any
related agreements or take any other action ancillary thereto.
 
  After the 27-month anniversary of the Closing Date until the 39-month
anniversary thereof or the termination of the Governance Agreement in
accordance with its terms, Newco may not, directly or indirectly, take any of
the actions identified in the prior paragraph except through an investment
banking firm formally engaged by Newco for such purpose; provided, that, 30
days prior to so engaging such investment banking firm for that purpose, Newco
shall notify Sprint of its intention to effect such engagement, and Sprint
shall be permitted to prepare and make a Sprint Offer for so long as such
investment banking firm remains engaged by Newco for that specific purpose.
Subject to the terms and conditions of the Sprint Offer and unless an
Intervening Offer is then outstanding, Sprint is entitled to pursue any such
Sprint Offer for so long as necessary to permit it to be consummated. Newco is
obligated to furnish Sprint with copies of all information provided by Newco
to such investment banking firm at the time such information is provided to
such firm, subject to Sprint entering into a customary confidentiality
agreement with respect to that information.
 
  The Board of Directors of Newco is obligated to (i) promptly notify Sprint
in writing of (A) its receipt of an Acquisition Proposal, (B) any inquiries or
discussions that may reasonably be expected to lead to an Acquisition
Proposal, (C) the execution by Newco of a confidentiality agreement with
respect to an Acquisition Proposal or (D) the furnishing of any confidential
information in contemplation of an Acquisition Proposal, whether or not
pursuant to a confidentiality agreement; (ii) describe the terms and
conditions of any Acquisition Proposal in reasonable detail; (iii) provide to
Sprint copies of any definitive agreements with respect to any Acquisition
Proposal and any confidentiality agreements with respect thereto; and (iv)
subject to Sprint's obligation to hold such information in strict confidence,
make available to Sprint all information made available to the party making
the Acquisition Proposal at the same time it is provided to such party.
 
  An "Acquisition Proposal" means any proposal for a tender or exchange offer,
a merger, consolidation, share exchange or other business combination, in
which Newco is a constituent party to such transaction, or a sale of
securities (other than Transaction Securities), recapitalization, liquidation,
dissolution or similar transaction involving Newco, or any proposal or offer
to acquire in any manner, directly or indirectly, a material equity interest
in, or a material amount of voting securities (with the acquisition of
beneficial ownership of 20% or more of the voting Equity Securities being
deemed to be material for this purpose) or assets of, Newco. In addition, a
"Material Sale," defined as any proposal involving the sale of assets of Newco
or any subsidiary or the sale of capital stock of any subsidiary, in any such
case, for which the consideration proposed to be paid in such transaction
represents 20% or more of the market capitalization on the date that Newco
receives such proposal, is also defined as an Acquisition Proposal.
 
                                      32
<PAGE>
 
  Subject to certain exceptions, Newco is obligated under the Governance
Agreement not to take any action or omit to take any action that would result
in (i) any Affiliated Equity Holder being deemed an "Acquiring Person" or
similar designation under any Stockholders' Rights Plan, (ii) any Affiliated
Equity Holder being prejudiced under any applicable state takeover statute,
including Section 203 of the DGCL, or (iii) otherwise causing any takeover
defense to materially impair or obstruct, or prevent (either legally or
financially) the exercise by any Affiliated Equity Holder of rights granted
under Article IV of the Governance Agreement.
 
STOCKHOLDERS' AGREEMENT
 
  In connection with the Investment Agreement, Sprint and certain principal
stockholders of the Company (the "Stockholders") entered into the
Stockholders' Agreement, which will become effective at Closing. The
Stockholders' Agreement obligates the Stockholders to support the obligations
of Newco under the Governance Agreement by (i) voting all of the "Covered
Shares" (as defined in the Stockholders' Agreement) in favor of a Sprint Offer
or a Qualified Offer and (ii) tendering all of the Covered Shares into a
tender offer initiated by Sprint to effect a Sprint Offer or a Qualified
Offer, unless, in each case, an Intervening Offer is then outstanding. The
term "Covered Shares" includes Shares, shares of Newco Common Stock received
in the Merger and other Equity Securities. However, it does not include shares
of Newco Common Stock or other Equity Securities subsequently sold by the
Stockholders in accordance with the terms of the Stockholders Agreement. The
name and number of Covered Shares held by each Stockholder is as follows: Sky
Dayton, Chairman of the Board of Directors of the Company, 1,500,000 Shares;
Quantum Industrial Partners LDC, 1,456,480 Shares; Reed Slatkin, a Director of
the Company, 1,042,473 Shares; Kevin M. O'Donnell, a Director of the Company,
944,614 Shares; Sidney Azeez, a Director of the Company, 236,884 Shares; and
George Soros, 214,545 Shares.
 
IRREVOCABLE PROXIES
 
  In order to provide for enforcement of the various provisions of the
Governance Agreement requiring the Affiliated Equity Holders to vote voting
Equity Securities in a certain manner, Sprint and Sprint L.P. have provided an
Irrevocable Proxy to the Company and Newco.
 
EFFECTIVENESS; TERMINATION; SURVIVAL
 
  The Governance Agreement becomes effective at the Closing. Thereafter, the
Governance Agreement terminates at the earliest of the following to occur: (i)
the termination of the Investment Agreement in accordance with its terms; (ii)
such time as Sprint's percentage interest is greater than 90% or less than the
Lower Threshold; (iii) the expiration of the Right to Offer Period; (iv) the
first date on which any Person or group as defined in Rule 13d-5(b) of the
Exchange Act is determined (A) to beneficially own or control more than 35% of
the Equity Securities outstanding by virtue of the acquisition of such
securities pursuant to a Third-Party Offer if the rights granted and process
contemplated by Article IV of the Governance Agreement have been effected in
accordance with the terms thereof or (B) to beneficially own or control 50% or
more of the voting Equity Securities outstanding; (v) upon the termination of
the Marketing Agreement in accordance with certain of its provisions; or (vi)
upon the exercise of registration rights (demand or incidental) by any
"Holder" of "Registrable Securities" under the Registration Rights Agreement.
 
  Notwithstanding the termination of the Governance Agreement, until the sixth
anniversary of the Closing Date and thereafter for as long as Sprint's
percentage interest is greater than the Lower Threshold, Sprint shall still be
subject to the Standstill Provisions. In addition, for so long as Sprint's
Percentage Interest remains greater than the Lower Threshold, Sprint shall
still have certain governance and anti-dilution rights under the Governance
Agreement. In such event, the Standstill Provisions and such other provisions
(as well as any definitional provisions with respect to the foregoing) shall
remain in full force and effect until such time as Sprint's Percentage
Interest is lower than the Lower Threshold; provided, however, that during any
period in which the Standstill Provisions survive, Sprint and its affiliates
may directly approach the Board of Newco in order to make an offer to effect a
Business Combination.
 
                                      33
<PAGE>
 
REGISTRATION RIGHTS AGREEMENT
 
  The Purchaser and Newco have entered into the Registration Rights Agreement
with respect to Newco Common Stock held by the Purchaser. Under the
Registration Rights Agreement, the Purchaser has the right (the "Demand
Registration Right") to at any time require Newco to file up to four
registration statements under the Securities Act to effect the registration of
Newco Common Stock held by Purchaser. This right may be exercised after 27
months following the Closing Date, but only once every nine months. Expenses
relating to the exercise of the Demand Registration Right will generally be
payable by Newco.
 
  Under the Registration Rights Agreement, the Purchaser also has the right
(the "Incidental Registration Right"), with respect to any underwritten
offerings, including registered offerings, of Newco Common Stock for cash
proposed by Newco, to require Newco to include Newco Common Stock of the
Purchaser in such offering and registration, if applicable after 27 months
following the Closing Date. Incremental expenses relating to exercises of the
Incidental Registration Right will generally be payable by Newco.
 
  In other respects, the Registration Rights Agreement contains terms that are
customary to registration rights agreements of its type.
 
OTHER MATTERS
 
  Except as otherwise described in this Offer to Purchase, the Purchaser has
no current plans or proposals that would relate to, or result in, any
extraordinary corporate transaction involving Newco or the Company, such as a
merger, reorganization or liquidation involving Newco or the Company, a sale
or transfer of a material amount of assets of Newco or the Company, any change
in Newco's or the Company's capitalization or dividend policy or any other
material change in Newco's business, corporate structure or personnel. Any
plans or proposals relating thereto would be subject to the terms of the
Governance Agreement, the Stockholders Agreement and the other Ancillary
Agreements, as applicable. Subject to the provisions of the Investment
Agreement and the Governance Agreement, the Purchaser and its affiliates
reserve the right to purchase, following consummation or termination of the
Offer, additional Shares from Newco, in the open market or otherwise. Any
additional purchases of Newco Common Stock could be at a price greater or less
than the price to be paid for the Shares in the Offer.
 
13. DIVIDENDS AND DISTRIBUTIONS
 
  During the period from the date of the Investment Agreement to the Closing
Date for the transactions contemplated by that agreement, the Company is not
permitted by the Investment Agreement to (i) declare or pay dividends or
making other distributions in respect of its capital stock, (ii) split,
combine or reclassify its capital stock, (iii) purchase, redeem or otherwise
acquire any of its capital stock, or (iv) issue or sell any of its capital
stock, convertible securities or warrants or other rights to acquire its
capital stock, without the prior written consent of Sprint and Sprint L.P..
 
14. CERTAIN CONDITIONS OF THE OFFER
 
  The Investment Agreement sets forth the following conditions which must be
satisfied before Sprint shall have an obligation, or be permitted, to
consummate the Offer, which conditions can only be waived by the agreement of
Sprint, Sprint L.P., the Company, Newco and Newco Sub:
 
    (i) the HSR Condition;
 
    (ii) all other authorizations, consents, orders or approvals of, or
  declarations or filings with, or expirations of waiting periods imposed by,
  any Federal, state, local or foreign government or any court of competent
  jurisdiction; administrative agency or commission or other governmental
  authority or instrumentality, domestic or foreign (a "Governmental
  Entity"), the failure to obtain which would have a Material Adverse Effect
  on Sprint, Sprint L.P. and their respective subsidiaries, the Company, or
  Newco and Newco Sub, in each case, taken as a whole, shall have been filed,
  occurred or been obtained;
 
                                      34
<PAGE>
 
    (iii) an S-4 Registration Statement shall have become effective under the
  Securities Act and shall not be the subject of any stop order or proceeding
  seeking a stop order;
 
    (iv) there shall not be threatened or pending by any Governmental Entity
  any action, suit, arbitration, inquiry, proceeding or investigation
  ("Action"), which has a reasonable likelihood of success, and there shall
  not be pending by any other person any Action which has a substantial
  likelihood of success (A) seeking to restrain or prohibit the acquisition
  by Sprint of any shares of Common Stock or any Convertible Notes or the
  acquisition by Sprint L.P. of any shares of Convertible Preferred Stock,
  the making or consummation of the Offer or the performance by any of the
  parties to the Investment Agreement of any of the other transactions
  contemplated by this Agreement or any of the Ancillary Agreements, or
  seeking to obtain from the Company, Newco, Sprint or Sprint L.P. any
  damages that are material in relation to Sprint, Newco, the Company and
  their respective subsidiaries taken as a whole, (B) seeking to impose
  limitations on the ability of Sprint or Sprint L.P. to acquire or hold, or
  exercise full rights of ownership of, any shares of Common Stock accepted
  or payment by Sprint pursuant to the Offer or any shares of Convertible
  Preferred Stock, any Convertible Notes or any Common Stock received upon
  conversion of either thereof, including, without limitation, the right to
  vote such Common Stock, Newco Common Stock and Convertible Preferred Stock
  on all matters properly presented to the stockholders of the Company, or
  Newco, as the case may be, (C) seeking to prohibit any party from
  exercising any of its material rights under the Investment Agreement or any
  Ancillary Agreements, or (D) seeking to prohibit or limit the ownership or
  operation by any party or its respective subsidiaries of a material portion
  of the business or assets of such party on a consolidated basis, or to
  compel any party to dispose of or hold separate any material portion of the
  business or assets of such party on a consolidated basis, as a result of
  the Offer or any of the other transactions contemplated by the Investment
  Agreement or the Ancillary Agreements;
 
    (v) no statute, rule, regulation, executive order, decree, temporary
  restraining order, preliminary or permanent injunction or other order
  enacted, entered, promulgated, enforced or issued by any Governmental
  Entity or other legal restraint or prohibition preventing the transactions
  contemplated by the Investment Agreement or by the Ancillary Agreements to
  occur by the Closing shall be in effect;
 
    (vi) the holders of Common Stock shall have approved the Company
  Stockholder Vote Matters; and
 
    (vii) the Investment Agreement shall not have terminated in accordance
  with its terms prior to the Expiration Date.
 
  The obligation of Sprint to consummate the Offer is conditioned upon the
satisfaction of the following conditions, which conditions may be waived by
Sprint and Sprint L.P.:
 
    (i) (A) The Board of Directors of the Company or Newco shall not have
  withdrawn or modified in a manner adverse to Sprint or Sprint L.P. its
  approval of the Offer or the other transactions contemplated by the
  Investment Agreement or the Ancillary Agreements, or approved any
  Acquisition Proposal or approved the solicitation of additional Acquisition
  Proposals, (B) the Company shall not have entered into any agreement with
  respect to any Acquisition Proposal, or (C) the Board of Directors of the
  Company or Newco or any committee thereof shall not have resolved to take
  any of the foregoing actions referred to in (A) or (B) above. "Acquisition
  Proposal" is defined in the Investment Agreement to mean any proposal for a
  tender or exchange offer, a merger, consolidation or other business
  combination, recapitalization, liquidation, dissolution or similar
  transaction involving a party to the Investment Agreement or any proposal
  or offer to acquire in any manner, directly or indirectly, a material
  equity interest in, or a material amount of voting securities (with the
  acquisition of beneficial ownership of 15% or more of such Party's voting
  securities being deemed to be material for this purpose) or assets of, such
  Party, other than the transactions contemplated by the Investment Agreement
  and the Ancillary Agreements;
 
    (ii) Each of the Company, Newco and Newco Sub shall have executed and
  delivered to Sprint and Sprint L.P., as the case may be, each Ancillary
  Agreement to which it is a party and each Ancillary Agreement shall be in
  full force and effect and all of the terms and conditions of each such
  Ancillary Agreement shall be satisfied in all material respects;
 
 
                                      35
<PAGE>
 
    (iii) The representations and warranties of the Company, Newco and Newco
  Sub set forth in the Investment Agreement shall be true and correct (A) as
  of the date referred to in any representation or warranty that addresses a
  matter as of a particular date, or (B) as to all other representations and
  warranties, as of February 10, 1998 and as of the Offer Acceptance Time;
  unless, in either the case of clause (A) or (B), the inaccuracies under
  such representations and warranties, would not, individually or in the
  aggregate, (x) have a Material Adverse Effect on the Company or Newco, (y)
  materially impair the ability of the Company, Newco and Newco Sub to enter
  into and perform the Investment Agreement or any Ancillary Agreement to
  which any of them is a party and their respective obligations thereunder,
  or (z) materially reduce Sprint's expected ownership interest in Newco by
  virtue of material inaccuracies in the representations and warranties
  regarding the capitalization of the Company, in each case without giving
  effect to any supplement to any schedule to the Investment Agreement or to
  any Ancillary Agreement and Sprint and Sprint L.P. shall also have each
  received a separate certificate to such effect dated the Offer Acceptance
  Date and executed by the chief executive officer and chief financial
  officer of each of the Company, Newco and Newco Sub;
 
    (iv) Each of the Company, Newco and Newco Sub shall have performed in all
  material respects all of the respective obligations and covenants required
  to be performed or complied with by them under the Investment Agreement and
  each of the Ancillary Agreements at or prior to the time of the Closing;
 
    (v) Sprint shall have received the legal opinion of Hunton & Williams,
  dated as of the Closing Date, counsel to Newco, Newco Sub, and the Company
  in form and substance reasonably satisfactory to Sprint and Sprint L.P.;
  and
 
    (vi) There shall not be any warrants to purchase Common Stock or other
  Dilutable Securities of the Company outstanding on the Closing Date which
  could be exercised on the Closing Date (assuming the expiration of any
  applicable vesting periods or the satisfaction of any other conditions to
  conversion, exchange, exercise or issuance) into a number of shares of
  Common Stock which, in the aggregate, would constitute more than 8% of the
  shares of Common Stock outstanding immediately prior to the Closing, which,
  upon or after the Merger will be convertible into or exchangeable for or
  give the right to acquire Common Stock or other voting securities of the
  Company, and the Company shall have provided copies of all amendments or
  other modifications of any Warrants and other Dilutable Securities obtained
  by the Company.
 
  Sprint may not accept for payment or, subject to any applicable rules and
regulations of the SEC, including Rule 14e-1(c) under the Exchange Act
(relating to Sprint's obligation to pay for or return tendered shares of
Common Stock after the termination or withdrawal of the Offer), pay for any
shares of Common Stock tendered pursuant to the Offer unless the following
conditions are satisfied on or prior to the Offer Acceptance Time, which
conditions may be waived by Newco, Newco Sub and the Company:
 
    (i) (A) The Board of Directors of Sprint, and the Board of Directors of
  the General Partners of Sprint L.P. shall not have withdrawn or modified in
  a manner adverse to Newco or the Company their approval of the Offer or the
  other transactions contemplated by the Investment Agreement or the
  Ancillary Agreements, or approved any Acquisition Proposal or approved the
  solicitation of additional Acquisition Proposals, (B) Sprint shall not have
  entered into any agreement with respect to any Acquisition Proposal, or (C)
  the Board of Directors of Sprint, or the Board of Directors of the General
  Partner of Sprint L.P., or any committee thereof shall not have resolved to
  take any of the foregoing actions referred to in (A) or (B) above, and
  Sprint and Sprint L.P. shall have executed and delivered to the Company,
  Newco and Newco Sub, as the case may be, and performed each Ancillary
  Agreement to which it is a party. Each Ancillary Agreement shall be in full
  force and effect and all of the terms and conditions of each such Ancillary
  Agreement shall be satisfied in all material respects;
 
    (ii) The representations and warranties of Sprint and Sprint L.P. shall
  be true and correct (A) as of the date referred to in any representation or
  warranty that addresses a matter as of a particular date, or (B) as to all
  other representations and warranties, as of the date of this Agreement and
  as of the Offer Acceptance Time; unless, in either the case of clause (A)
  or (B), the inaccuracies under such representations and
 
                                      36
<PAGE>
 
  warranties, would not, individually or in the aggregate, (x) have a
  Material Adverse Effect on Sprint or Sprint L.P., or (y) materially impair
  the ability of Sprint and Sprint L.P. to enter into and perform the
  Investment Agreement or any Ancillary Agreement to which any of them is a
  Party and their respective obligations thereunder, in each case without
  giving effect to any supplement to any schedule to the Investment Agreement
  or to any Ancillary Agreement (provided, however, that any supplement must
  be objected to before the earlier of the Offer Acceptance Time or 10
  Business Days from the date of delivery thereof). The Company, Newco, and
  Newco Sub shall have each received a separate certificate to such effect
  dated the Offer Acceptance Date and executed by a duly authorized executive
  officer of each of Sprint and Sprint L.P., in each case without giving
  effect to any supplement to any Schedule to the Investment Agreement or to
  any Ancillary Agreement;
 
    (iii) Sprint shall have performed or complied in all material respects
  with all obligations and covenants required by the Investment Agreement and
  each of the Ancillary Agreements to be performed or complied with by Sprint
  by the time of the Closing;
 
    (iv) The Company, Newco and Newco Sub shall have received the legal
  opinion of Stinson, Mag & Fizzell, P.C., counsel to Sprint and Sprint L.P.,
  dated as of the Closing Date, in form and substance reasonably satisfactory
  to Newco and the Company; and
 
    (v) Sprint shall not have entered into an agreement providing for a
  transaction contemplated by an Acquisition Proposal, nor shall it have
  consummated any such transaction, nor shall Sprint have received any
  Acquisition Proposal (i) recommended by the Board of Directors of Sprint,
  or (ii) if not so recommended, which the Board of Directors of the Company
  reasonably determines in good faith upon consultation with its outside
  financial advisors is reasonably likely to be consummated.
 
15. CERTAIN LEGAL MATTERS
 
  Based on a review of publicly available filings made by the Company with the
Commission and other publicly available information concerning the Company and
discussions by representatives of the Purchaser with representatives of the
Company, the Purchaser is not aware of any license or regulatory permit that
appears to be material to the business of the Company, taken as a whole, that
might be adversely affected by the Purchaser's acquisition of Shares as
contemplated herein or of any approval or other action, except as otherwise
described in this Section 15, by any Governmental Entity that would be
required for the acquisition or ownership of Shares by the Purchaser as
contemplated herein. Should any such approval or other action be required, the
Purchaser currently contemplates that such approval or other action will be
sought, except as described below under "State Takeover Laws". There can be no
assurance that any such approval or other action, if needed, would be obtained
or would be obtained without substantial conditions or that failure to obtain
any such approval or other action might not result in consequences adverse to
the Company's business or that certain parts of the Company's business might
not have to be disposed of if such approvals were not obtained or such other
actions were not taken or in order to obtain any such approval or other
action. If certain types of adverse action are taken with respect to the
matters discussed below, the Purchaser could decline to accept for payment or
pay for any Shares tendered. See Section 14 for certain conditions to the
Offer.
 
STATE TAKEOVER LAWS
 
  A number of states throughout the United States have enacted takeover
statutes that purport, in varying degrees, to be applicable to attempts to
acquire securities of corporations that are incorporated or have assets,
stockholders, executive offices or places of business in such states. In Edgar
v. MITE Corp., the Supreme Court of the United States held that the Illinois
Business Takeover Act, which involved state securities laws that made the
takeover of certain corporations more difficult, imposed a substantial burden
on interstate commerce and therefore was unconstitutional. In CTS Corp. v.
Dynamics Corp. of America, however, the Supreme Court of the United States
held that a state may, as a matter of corporate law and, in particular, those
laws concerning corporate governance, constitutionally disqualify a potential
acquiror from voting on the affairs of a target corporation without prior
approval of the remaining stockholders, provided that such laws were
applicable only under certain conditions.
 
                                      37
<PAGE>
 
  Section 203 of the DGCL limits the ability of a Delaware corporation to
engage in business combinations with "interested stockholders" (defined as any
beneficial owner of 15% or more of the outstanding voting stock of the
corporation) unless, among other things, the corporation's board of directors
has given its prior approval to either the business combination or the
transaction which resulted in the stockholder becoming an "interested
stockholder." The Company's Board of Directors has approved the Investment
Agreement, the Ancillary Agreements, the transactions contemplated by the
Investment Agreement and the Ancillary Agreements and the Purchaser's
acquisition of Shares pursuant to the Offer and, therefore, Section 203 of the
DGCL is inapplicable to the Offer or the other transactions contemplated by
the Investment Agreement.
 
  Based on information supplied by the Company, the Purchaser does not believe
that any other state takeover statutes purport to apply to the Offer or the
other transactions contemplated by the Investment Agreement. The Purchaser has
not currently complied with any state takeover statute or regulation. The
Purchaser reserves the right to challenge the applicability or validity of any
state law purportedly applicable to the Offer and nothing in this Offer to
Purchase or any action taken in connection with the Offer is intended as a
waiver of such right. If it is asserted that any state takeover statute is
applicable to the Offer, the Purchaser might be required to file certain
information with, or to receive approvals from, the relevant state
authorities, and the Purchaser might be unable to accept for payment or pay
for Shares tendered pursuant to the Offer, or be delayed in consummating the
Offer. In such case, the Purchaser may not be obliged to accept for payment or
pay for any Shares tendered pursuant to the Offer.
 
ANTITRUST
 
  The Purchaser will promptly file after the date hereof a Notification and
Report Form with respect to the Offer and the other transactions contemplated
by the Investment Agreement under the HSR Act. The waiting period under the
HSR Act with respect to the Offer will expire at 11:59 p.m., New York City
time, on the 15th day after the date such form is filed and the waiting period
with respect to the other transactions contemplated by the Investment
Agreement will expire at 11:59 p.m., New York City time, on the 30th day after
the date such form is filed by both the Purchaser and the Company, in each
case unless early termination of the waiting period is granted. In addition,
the Antitrust Division or the FTC may extend such waiting periods by
requesting additional information or documentary material from the Purchaser
and, in the case of the waiting period applicable to the other transactions
contemplated by the Investment Agreement, the Company. If such a request is
made with respect to the Offer, the waiting period related to the Offer will
expire at 11:59 p.m., New York City time, on the 10th day after substantial
compliance by the Purchaser with such request. If such a request is made with
respect to the other transactions contemplated by the Investment Agreement,
the waiting period related to such other transactions will expire at 11:59
p.m., New York City time, on the 20th day after both parties have
substantially complied with such request by each party to whom such a request
is made. Because the other transactions contemplated by the Investment
Agreement are to occur immediately following the Offer, it is expected that
the Offer will not be consummated until the waiting periods under the HSR Act
with respect to both the Offer and the other transactions contemplated by the
Investment Agreement have expired or have been terminated. With respect to
each acquisition, the Antitrust Division or the FTC may issue only one request
for additional information. In practice, complying with a request for
additional information or material can take a significant amount of time. In
addition, if the Antitrust Division or the FTC raises substantive issues in
connection with a proposed transaction, the parties may engage in negotiations
with the relevant governmental agency concerning possible means of addressing
those issues and may agree to delay consummation of the transaction while such
negotiations continue. Expiration or termination of applicable waiting periods
under the HSR Act is a condition to the Purchaser's obligation to accept for
payment and pay for Shares tendered pursuant to the Offer.
 
  The FTC and the Antitrust Division frequently scrutinize the legality under
the antitrust laws of transactions such as the Purchaser's proposed investment
in the Company. At any time before or after the Purchaser's purchase of Shares
pursuant to the Offer, the Antitrust Division or FTC could take such action
under the antitrust laws as it deems necessary or desirable in the public
interest, including seeking to enjoin the purchase of Shares
 
                                      38
<PAGE>
 
pursuant to the Offer or the other transactions contemplated by the Investment
Agreement or seeking the divestiture of Shares acquired by the Purchaser or
the divestiture of substantial assets of the Purchaser or its subsidiaries, or
the Company or its subsidiaries. Private parties may also bring legal action
under the antitrust laws under certain circumstances. There can be no
assurance that a challenge to the Offer on antitrust grounds will not be made
or, if such a challenge is made, of the results thereof.
 
16. FEES AND EXPENSES
 
  As compensation for services rendered in connection with the Purchaser's
investment in the Company and the Offer, the Purchaser has agreed to pay SBC
Warburg Dillon Read Inc. fees of $1.5 million, of which $100,000 is being paid
in connection with their retention and $1.4 million is payable upon Closing.
In addition, the Purchaser has agreed to indemnify SBC Warburg Dillon Read
Inc. and certain related persons and entities against certain liabilities
(excluding those arising under the Securities Act or the Exchange Act) and
expenses.
 
  The Purchaser has retained D.F. King & Co., Inc. to act as the Information
Agent and American Stock Transfer & Trust Company to serve as the Depositary
in connection with the Offer. The Information Agent and the Depositary each
will receive reasonable and customary compensation for their services, be
reimbursed for certain reasonable out-of-pocket expenses and be indemnified
against certain liabilities and expenses in connection therewith, including
certain liabilities under the Federal securities laws.
 
  The Purchaser will not pay any fees or commissions to any broker or dealer
or other person (other than the Dealer Manager and the Information Agent) in
connection with the solicitation of tenders of Shares pursuant to the offer.
Brokers, dealers, commercial banks and trust companies will be reimbursed by
the Purchaser upon request for customary mailing and handling expenses
incurred by them in forwarding material to their customers.
 
  For further information on fees and expenses related to the transactions
contemplated by the Investment Agreement, see Section 10.
 
17. MISCELLANEOUS
 
  The Offer is not being made to (nor will tenders be accepted from or on
behalf of) holders of Shares in any jurisdiction in which the making of the
Offer or the acceptance thereof would not be in compliance with the laws of
such jurisdiction. None of the Purchaser, Sprint L.P., the Company, Newco or
Newco Sub is aware of any jurisdiction in which the making of the Offer or the
tender of Shares in connection therewith would not be in compliance with the
laws of such jurisdiction. To the extent the Purchaser, the Company, Newco or
Newco Sub becomes aware of any state law that would limit the class of
offerees in the Offer, the Purchaser will amend the Offer and, depending on
the time of such amendment, if any, will extend the Offer to provide adequate
dissemination of such information to holders of Shares prior to the expiration
of the Offer. In any jurisdiction the securities, blue sky or other laws of
which require the Offer to be made by a licensed broker or dealer, the Offer
is being made on behalf of the Purchaser by the Dealer Manager or one or more
registered brokers or dealers licensed under the laws of such jurisdiction.
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATION ON BEHALF OF THE PURCHASER NOT CONTAINED HEREIN OR IN THE
LETTER OF TRANSMITTAL AND, IF GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED.
 
  The Purchaser has filed with the Commission a Tender Offer Statement on
Schedule 14D-1 pursuant to Rule 14d-3 under the Exchange Act, furnishing
certain additional information with respect to the Offer. In addition, the
Company has filed with the Commission a Solicitation/Recommendation Statement
on Schedule 14D-9 pursuant to Rule 14d-9 under the Exchange Act, setting forth
its recommendation with respect to the offer and the reasons for such
recommendation and furnishing certain additional related information. Such
Schedules and any amendments thereto, including exhibits, should be available
for inspection and copies should be obtainable in the manner set forth in
Sections 8 and 9 (except that they will not be available at the regional
offices of the Commission).
 
                                          Sprint Corporation
 
February 18, 1998
 
                                      39
<PAGE>
 
                                   SCHEDULE I
 
                      DIRECTORS AND EXECUTIVE OFFICERS OF
                                 THE PURCHASER
 
DIRECTORS AND EXECUTIVE OFFICER OF THE PURCHASER
 
  The name, business address, present principal occupation or employment, five-
year employment history and citizenship of each of the directors and executive
officers of the Purchaser are set forth below. Unless otherwise indicated
below, each occupation set forth opposite an individual's name refers to
employment with the Purchaser.
 
<TABLE>
<CAPTION>
NAME AND BUSINESS                  POSITION WITH THE PURCHASER, PRINCIPAL OCCUPATION
ADDRESS                CITIZENSHIP      OR EMPLOYMENT; 5-YEAR EMPLOYMENT HISTORY
- -----------------      ----------- --------------------------------------------------
<S>                    <C>         <C>
Mr. William T. Esrey       USA     Chairman and Chief Executive Officer; Director of
Sprint Corporation                 Duke Energy Corporation, The Equitable Life
2330 Shawnee Mission               Assurance Society of the United States, Everen
Parkway                            Capital Corporation, and General Mills, Inc. Mr.
Westwood, KS 66205                 Esrey has been Chairman of Sprint since 1990 and
                                   Chief Executive Officer since 1985. Director of
                                   Sprint since 1985; Chairman of the Executive
                                   Committee.
Mr. Ronald T. LeMay        USA     President and Chief Operating Officer; Director of
Sprint Corporation                 Ceridian Corporation, Imation Corporation, and
2330 Shawnee Mission               Yellow Corporation. Mr. LeMay has served as
Parkway                            President and Chief Operating Officer of Sprint
Westwood, KS 66205                 since February of 1996 except for the period from
                                   July 1997 to October 1997 when he served as
                                   Chairman and Chief Executive Officer of Waste
                                   Management, Inc., a provider of comprehensive
                                   waste management services. Mr. LeMay was Chief
                                   Executive Officer of Sprint Spectrum from March
                                   1995 until February 1996. Mr. LeMay was President
                                   and Chief Operating Officer--Long Distance
                                   Division of Sprint from 1989 until March of 1995.
                                   Director of Sprint from 1993 until July 1997 and
                                   re-elected in December 1997.
Mr. Michael B. Fuller      USA     President--Local Telecommunications Division,
Sprint Corporation                 since 1996. Mr. Fuller was President of United
2330 Shawnee Mission               Telephone--Midwest Group, an operating group of
Parkway                            subsidiaries of Sprint from 1990 until 1996.
Westwood, KS 66205
Ms. Patti S. Manuel        USA     President and Chief Operating Officer--Long
Sprint Corporation                 Distance Division. Ms. Manuel was elected as
2330 Shawnee Mission               President and Chief Operating Officer--Long
Parkway                            Distance Division in February 1998. She was also
Westwood, KS 66205                 elected as President and Chief Operating Officer
                                   of Sprint L.P. in February 1998. She had served as
                                   President of Sprint Business, a division of Sprint
                                   L.P., since May 1997. From 1994 to 1997, she was
                                   President of Sales and Marketing for Sprint
                                   Business. She was named President of Marketing for
                                   Sprint Business in 1993.
Mr. Kevin E. Brauer        USA     President--National Integrated Services Division
Sprint Corporation                 since October 1997; served as Senior Vice
2330 Shawnee Mission               President since June 1997; from 1992 to 1997, was
Parkway                            President of Sprint L.P.'s Business Service Group.
Westwood, KS 66205
</TABLE>
 
 
 
                                      S-1
<PAGE>
 
<TABLE>
<CAPTION>
NAME AND BUSINESS                    POSITION WITH THE PURCHASER, PRINCIPAL OCCUPATION
ADDRESS                  CITIZENSHIP      OR EMPLOYMENT; 5-YEAR EMPLOYMENT HISTORY
- -----------------        ----------- --------------------------------------------------
<S>                      <C>         <C>
Mr. J. Richard Devlin        USA     Executive Vice President--Law and External Affairs
Sprint Corporation                   since 1989.
2330 Shawnee Mission
Parkway
Westwood, KS 66205
Mr. Arthur B. Krause         USA     Executive Vice President--Chief Financial Officer
Sprint Corporation                   since 1988.
2330 Shawnee Mission
Parkway
Westwood, KS 66205
Mr. Gene M. Betts            USA     Senior Vice President since 1990.
Sprint Corporation
2330 Shawnee Mission
Parkway
Westwood, KS 66205
Mr. John R. Hoffman          USA     Senior Vice President--External Affairs since
Sprint Corporation                   1990.
2330 Shawnee Mission
Parkway
Westwood, KS 66205
Mr. John P. Meyer            USA     Senior Vice President and Controller since 1993.
Sprint Corporation
2330 Shawnee Mission
Parkway
Westwood, KS 66205
Mr. Theodore H. Schell       USA     Senior Vice President--Strategic Planning and
Sprint Corporation                   Corporate Development since 1990.
2330 Shawnee Mission
Parkway
Westwood, KS 66205
Ms. M. Jeannine              USA     Senior Vice President and Treasurer since 1990.
Strandjord
Sprint Corporation
2330 Shawnee Mission
Parkway
Westwood, KS 66205
Mr. I. Benjamin Watson       USA     Senior Vice President--Human Resources since 1993.
Sprint Corporation
2330 Shawnee Mission
Parkway
Westwood, KS 66205
Mr. Don A. Jensen            USA     Vice President and Secretary since 1975.
Sprint Corporation
2330 Shawnee Mission
Parkway
Westwood, KS 66205
Mr. DuBose Ausley            USA     Chairman of Ausley & McMullen, a law firm,
Ausley & McMullen, P.A.              Tallahassee, Florida; Director of Capital City
P.O. Box 391                         Bank Group, Inc., Tampa Electric Co., Inc. and
Tallahassee, FL 32302                TECO Energy, Inc. Prior to becoming Chairman of
                                     Ausley & McMullen in 1996, Mr. Ausley was Chairman
                                     of Macfarlane, Ausley, Ferguson & McMullen since
                                     1994 and, prior to that he was President of
                                     Ausley, McMullen, McGehee, Carothers & Proctor,
                                     P.A. for more than five years. Mr. Ausley has also
                                     been Chairman of the Capital City Bank Group, Inc.
                                     for more than five years. Director of Sprint since
                                     1993.
</TABLE>
 
 
                                      S-2
<PAGE>
 
<TABLE>
<CAPTION>
NAME AND BUSINESS                    POSITION WITH THE PURCHASER, PRINCIPAL OCCUPATION
ADDRESS                  CITIZENSHIP      OR EMPLOYMENT; 5-YEAR EMPLOYMENT HISTORY
- -----------------        ----------- --------------------------------------------------
<S>                      <C>         <C>
Mr. Warren L. Batts        USA       Chairman and Chief Executive Officer of Tupperware
Suite 214                            Corporation, a diversified consumer products
One Northfield Plaza                 company, Orlando, Florida. Mr. Batts is also
Northfield, IL 60093                 Chairman of Premark International, Inc., a
                                     diversified consumer products company, Deerfield,
                                     Illinois, Director of The Allstate Corporation,
                                     Cooper Industries, Inc. and Sears, Roebuck &
                                     Company. Mr. Batts has been Chairman of Premark
                                     International, Inc. since 1986 and Chairman and
                                     Chief Executive Officer of Tupperware Corporation
                                     since its spin-off from Premark International,
                                     Inc. in 1996. Director of Sprint since 1982;
                                     Chairman of the Audit Committee, Member of the
                                     Executive Committee.
Mr. Michel Bon             France    Chairman and Chief Executive Officer of France
France Telecom                       Telecom, a telecommunications company, Paris,
6 place d'Alleray                    France. Mr. Bon became Chairman of France Telecom
75505 Paris Cedex 15                 in September of 1995. He served as head of
France                               France's national job-placement agency from 1993
                                     to 1995, and, prior to that as Chairman and Chief
                                     Executive Officer of Carrefour, France's largest
                                     retailer, for more than five years. Director of
                                     Sprint since 1996.
Dr. Ruth M. Davis          USA       President and Chief Executive Officer of The
The Pymatuning Group,                Pymatuning Group, Inc., a technology management
Inc.                                 services company, Alexandria, Virginia; Director
Suite 570-4900 Seminary              of Air Products and Chemicals, Inc., BTG, Inc.,
Rd.                                  Consolidated Edison Company of New York, Inc.,
Alexandria, VA 22311                 Ceridian Corporation, Premark International, Inc.,
                                     Principal Financial Group, Tupperware Corporation
                                     and Varian Associates, Inc. Dr. Davis has been
                                     President and Chief Executive Officer of The
                                     Pymatuning Group, Inc. for more than five years.
                                     Director of Sprint since 1981; Member of the Audit
                                     Committee.
Mr. Irvine O. Hockaday,    USA       President and Chief Executive Officer of Hallmark
Jr.                                  Cards, Inc., manufacturer of greeting cards,
Hallmark Cards, Inc.                 Kansas City, Missouri. Director of Dow Jones,
P.O. Box 419580                      Inc., Ford Motor Company and UtiliCorp United. Mr.
Kansas City, MO 64141-               Hockaday has been President and Chief Executive
6508                                 Officer of Hallmark Cards, Inc. since 1985.
                                     Director of Sprint since June of 1997; Member of
                                     the Audit Committee.
Mr. Harold S. Hook         USA       Retired Chairman and Chief Executive Officer of
American General                     American General Corporation, a financial services
Corporation                          holding corporation, Houston, Texas, Director of
Wortham Tower                        Chase Manhattan Bank, Chase Manhattan Corporation,
2727 Allen Parkway,                  Cooper Industries, Inc. and Duke Energy
Suite W16-01                         Corporation. Mr. Hook was Chairman of American
Houston, TX 77019-2125               General Corporation from 1978 to 1997 and Chief
                                     Executive Officer from 1978 to 1996. Director of
                                     Sprint since 1982; Member of the Organization,
                                     Compensation and Nominating Committee.
</TABLE>
 
 
                                      S-3
<PAGE>
 
<TABLE>
<CAPTION>
NAME AND BUSINESS                     POSITION WITH THE PURCHASER, PRINCIPAL OCCUPATION
ADDRESS                   CITIZENSHIP      OR EMPLOYMENT; 5-YEAR EMPLOYMENT HISTORY
- -----------------         ----------- --------------------------------------------------
<S>                       <C>         <C>
Ms. Linda Koch Lorimer      USA       Vice President and Secretary of the University,
Yale University                       Yale University, New Haven, Connecticut; Director
P.O. Box 208230                       of McGraw-Hill, Inc. Prior to becoming Vice
New Haven, CT 06520                   President and Secretary of Yale University in
                                      1993, Ms. Lorimer was President of Randolph-Macon
                                      Woman's College for more than six years. Director
                                      of Sprint since 1993; Member of the Organization,
                                      Compensation and Nominating Committee.
Mr. Charles B. Rice         USA       Chairman and Chief Executive Officer of Barnett
NationsBank                           Banks, Inc., a bank holding company, Jacksonville,
P.O. Box 40789                        Florida; Director of CSX Corporation. Mr. Rice has
Jacksonville, FL                      been Chairman and Chief Executive Officer of
32203-0789                            Barnett Banks, Inc. for more than five years.
                                      Director of Sprint since 1975; Member of the
                                      Organization, Compensation and Nominating
                                      Committee and the Executive Committee.
Dr. Ron Sommer              Germany   Chairman of the Board of Management of Deutsche
Deutsche Telekom AG                   Telekom AG, a telecommunications company, Bonn,
Friedrich-Ebert-Allee                 Germany. Prior to becoming Chairman of Deutsche
140                                   Telekom AG in May of 1995, Mr. Sommer was
53113 Bonn                            President and Chief Operating Officer of Sony
Germany                               Corporation of America beginning in 1990, and in
                                      1993, he took over the management of Sony Europe
                                      in the same function. Director of Sprint since
                                      1996; Member of the Organization, Compensation and
                                      Nominating Committee.
Mr. Stewart Turley          USA       Chairman of Eckerd Corporation, a diversified
Suite 201                             retailer, Clearwater, Florida; Director of Barnett
1465 South Fort Harrison              Banks, Inc. and Springs Industries, Inc. Mr.
Avenue                                Turley has been Chairman of Eckerd Corporation for
Clearwater, FL 33756                  more than five years. Director of Sprint since
                                      1980; Chairman of the Organization, Compensation
                                      and Nominating Committee, member of the Executive
                                      Committee.
</TABLE>
 
 
                                      S-4
<PAGE>
 
  Manually signed facsimile copies of the Letter of Transmittal will be
accepted. The Letter of Transmittal, certificates for Shares and any other
required documents should be sent or delivered by each stockholder of the
Company or such stockholder's broker, dealer, commercial bank, trust company
or other nominee to the Depositary at one of its addresses set forth below.
 
                       The Depositary for the Offer is:
 
                    American Stock Transfer & Trust Company
 
    By Mail, Hand or Overnight              By Facsimile Transmission:
             Delivery:                            (718) 234-5001
 
          40 Wall Street                   Confirm Receipt of Facsimile
            46th Floor                             by Telephone:
        New York, NY 10005                        (718) 921-8200
 
                               ----------------
 
  Questions and requests for assistance or for additional copies of this Offer
to Purchase, the Letter of Transmittal and the Notice of Guaranteed Delivery
may be directed to the Information Agent or the Dealer Manager at their
respective telephone numbers and locations listed below. You may also contact
your broker, dealer, commercial bank, trust company or other nominee for
assistance concerning the Offer.
 
                    The Information Agent for the Offer is:
 
                             D.F. KING & CO., INC.
                                77 Water Street
                           New York, New York 10005
                               1-(800)-859-8515
                                      or
                          Call Collect (212) 209-5550
 
                     The Dealer Manager for the Offer is:
 
                         SBC WARBURG DILLON READ INC.
 
                              535 Madison Avenue
                           New York, New York 10022
                                (212) 906-7530

<PAGE>
 
                             LETTER OF TRANSMITTAL
                       To Tender Shares of Common Stock
                                      of
                            EARTHLINK NETWORK, INC.
                                      at
                             $45.00 NET PER SHARE
           Pursuant to the Offer to Purchase Dated February 18, 1998
                                      by
                              SPRINT CORPORATION
 
 THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00
 MIDNIGHT, NEW YORK CITY TIME, ON FRIDAY, MARCH 20, 1998, UNLESS THE OFFER
 IS EXTENDED.
 
 
                       The Depositary for the Offer is:
                    AMERICAN STOCK TRANSFER & TRUST COMPANY
 
 By Mail, Hand or Overnight Delivery:        By Facsimile Transmission:
            40 Wall Street                         (718) 234-5001
     46th FloorNew York, NY 10005          Confirm Receipt of Facsimile by
                                                     Telephone:
                                                   (718) 921-8200
 
  DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET FORTH
ABOVE OR TRANSMISSION VIA A FACSIMILE NUMBER OTHER THAN AS SET FORTH ABOVE
WILL NOT CONSTITUTE A VALID DELIVERY.
 
  THIS LETTER OF TRANSMITTAL MUST BE SIGNED IN THE APPROPRIATE SPACE PROVIDED
THEREFOR AND THE SUBSTITUTE FORM W-9 SET FORTH BELOW MUST BE COMPLETED.
 
  THE INSTRUCTIONS ACCOMPANYING THIS LETTER OF TRANSMITTAL SHOULD BE READ
CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS COMPLETED.
 
  This Letter of Transmittal is to be used either if certificates for Shares
(as defined below) are to be forwarded herewith or, unless an Agent's Message
(as defined in Section 2 of the Offer to Purchase) is utilized, if delivery of
Shares is to be made by book-entry transfer to an account maintained by the
Depositary at The Depository Trust Company (the "Book-Entry Transfer
Facility") pursuant to the procedures set forth in Section 2 of the Offer to
Purchase. Stockholders whose certificates for Shares are not immediately
available or who cannot deliver either the certificates for, or a Book-Entry
Confirmation (as defined in Section 2 of the Offer to Purchase) with respect
to, their Shares and all other documents required hereby to the Depositary
prior to the Expiration Date (as defined in Section 1 of the Offer to
Purchase) must tender their Shares according to the guaranteed delivery
procedures set forth in Section 2 of the Offer to Purchase. See Instruction 2.
Delivery of documents to the Book-Entry Transfer Facility in accordance with
the Book-Entry Transfer Facility's procedures does not constitute delivery to
the Depositary.
<PAGE>
 
[_]CHECK HERE IF TENDERED SHARES ARE BEING DELIVERED BY BOOK-ENTRY TRANSFER
   MADE TO AN ACCOUNT MAINTAINED BY THE DEPOSITARY WITH THE BOOK-ENTRY
   TRANSFER FACILITY, AND COMPLETE THE FOLLOWING:
 
  Name of Tendering Institution: _____________________________________________
  Account Number: ____________________________________________________________
  Transaction Code Number: ___________________________________________________
[_]CHECK HERE IF TENDERED SHARES ARE BEING DELIVERED PURSUANT TO A NOTICE OF
   GUARANTEED DELIVERY PREVIOUSLY SENT TO THE DEPOSITARY, AND COMPLETE THE
   FOLLOWING:
  Name(s) of Registered Owner(s): ____________________________________________
  Window Ticket Number (if any): _____________________________________________
  Date of Execution of Notice of Guaranteed Delivery: ________________________
  Name of Institution that Guaranteed Delivery: ______________________________
  [_] Check here if Delivered by Book-Entry Transfer
  Account Number: ____________________________________________________________
  Transaction Code Number: ___________________________________________________
 
                        DESCRIPTION OF SHARES TENDERED
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
<S>                                                <C> 
NAME(S) AND ADDRESSES(ES) OF REGISTERED HOLDER(S)
  (PLEASE FILL IN, IF BLANK, EXACTLY AS NAME(S)                  SHARES TENDERED
           APPEAR(S) ON CERTIFICATE(S))            (ATTACH ADDITIONAL SIGNED LIST IF NECESSARY)
- -----------------------------------------------------------------------------------------------
</TABLE>
                                       TOTAL NUMBER
                                         OF SHARES    NUMBER OF
                          CERTIFICATE REPRESENTED BY    SHARES
                          NUMBER(S)*  CERTIFICATE(S)* TENDERED**
                                       ---------------------------------------
                                       ---------------------------------------
                                       ---------------------------------------
                                       ---------------------------------------
- -------------------------------------------------------------------------------
  *Need not be completed by stockholders tendering by book-entry transfer.
 **Unless otherwise indicated, it will be assumed that all Shares being
  delivered to the Depositary are being tendered.
   See Instruction 4.
 
<PAGE>
 
                   NOTE: SIGNATURES MUST BE PROVIDED BELOW.
             PLEASE READ CAREFULLY THE ACCOMPANYING INSTRUCTIONS.
 
Ladies and Gentlemen:
 
  The undersigned hereby tenders to Sprint Corporation, a Kansas corporation
(the "Purchaser"), the above described shares of Common Stock, par value $.01
per share (the "Shares"), of EarthLink Network, Inc., a Delaware corporation
(the "Company"), pursuant to the Purchaser's offer to purchase 1,250,000
Shares at the purchase price of $45.00 per Share, net to the tendering
stockholder in cash, in accordance with the terms and conditions set forth in
the Offer to Purchase dated February 18, 1998 (the "Offer to Purchase"), and
this Letter of Transmittal (which, together with any amendments or supplements
thereto or hereto, collectively constitute the "Offer"), receipt of which is
hereby acknowledged.
 
  Subject to, and effective upon, acceptance for payment of the Shares
tendered herewith in accordance with the terms and subject to the conditions
of the Offer (including, if the Offer is extended or amended, the terms or
conditions of any such extension or amendment), the undersigned hereby sells,
assigns and transfers to, or upon the order of, the Purchaser all right, title
and interest in and to all the Shares that are being tendered hereby (and any
and all other Shares or other securities or rights issued or issuable in
respect thereof on or after February 18, 1998) and irrevocably constitutes and
appoints the Depositary the true and lawful agent and attorney-in-fact of the
undersigned with respect to such Shares (and any such other Shares or
securities or rights), with full power of substitution (such power of attorney
being deemed to be an irrevocable power coupled with an interest), to (a)
deliver certificates for such Shares (and any such other Shares or securities
or rights) or transfer ownership of such Shares (and any such other Shares or
securities or rights) on the account books maintained by the Book-Entry
Transfer Facility, together in either such case with all accompanying
evidences of transfer and authenticity to, or upon the order of, the Purchaser
upon receipt by the Depositary, as the undersigned's agent, of the purchase
price (which price may be adjusted, if appropriate, as provided in the Offer
to Purchase), (b) present such Shares (and any such other Shares or securities
or rights) for transfer on the books of the Company and (c) receive all
benefits and otherwise exercise all rights of beneficial ownership of such
Shares (and any such other Shares or securities or rights), all in accordance
with the terms of the Offer.
 
  The undersigned hereby irrevocably appoint the designees of the Purchaser as
the attorneys-in-fact and proxies of the undersigned, each with full power of
substitution, to vote at any meeting of the Company's stockholders (whether
annual or special and whether or not an adjourned meeting) or otherwise in
such manner as each such attorney and proxy or his substitute shall in his
sole discretion deem proper, to execute any written consent concerning any
matter as each such attorney and proxy or his substitute shall in his sole
discretion deem proper, and to otherwise act as each such attorney and proxy
or his substitute shall in his sole discretion deem proper, with respect to
all the Shares tendered hereby (and any and all other Shares or securities or
rights issued or issuable in respect thereof on or after February 18, 1998)
that have been accepted for payment by the Purchaser prior to the time any
such action is taken and with respect to which the undersigned is entitled to
vote. This appointment is effective when, and only to the extent that, the
Purchaser accepts for payment such Shares as provided in the Offer to
Purchase. This power of attorney and proxy is coupled with an interest in the
Company and in the Shares and is irrevocable and is granted in consideration
of the acceptance for payment of such Shares in accordance with the terms of
the Offer. Such acceptance for payment shall, without further action, revoke
all prior powers of attorney and proxies given by the undersigned at any time
with respect to such Shares (and any such other Shares or other securities or
rights) and no subsequent powers of attorney or proxies may be given (and, if
given, will be deemed not to be effective) by the undersigned with respect
thereto.
 
  The undersigned hereby represents and warrants that the undersigned has full
power and authority to tender, sell, assign and transfer the Shares tendered
hereby (and any and all other Shares or other securities or rights issued or
issuable in respect thereof on or after February 18, 1998), the tender of the
Shares tendered hereby complies with Rule 14e-4 under the Securities and
Exchange Act of 1934, as amended, and that, when the tendered Shares are
accepted for payment by the Purchaser, the Purchaser will acquire good and
unencumbered title thereto, free and clear of all liens, restrictions, claims,
charges and encumbrances. The undersigned will, upon request, execute and
deliver any additional documents deemed by the Depositary or the Purchaser to
be necessary or desirable to complete the sale, assignment and transfer of the
Shares tendered hereby (and any and all such other Shares or other securities
or rights).
 
  All authority conferred or agreed to be conferred pursuant to this Letter of
Transmittal shall not be affected by, and shall survive, the death or
incapacity of the undersigned, and any obligation of the undersigned hereunder
shall be binding upon the successors, assigns, heirs, executors,
administrators, trustees in bankruptcy and legal representatives of the
undersigned. Except as stated in the Offer to Purchase, this tender is
irrevocable.
 
  The undersigned understands that the valid tender of Shares pursuant to any
one of the procedures described in Section 2 of the Offer to Purchase and in
the instructions hereto will constitute a binding agreement between the
undersigned and the Purchaser upon the terms and subject to the conditions of
the Offer.
 
  The undersigned understands that if more than 1,250,000 Shares are validly
tendered prior to the expiration of the Offer and not validly withdrawn in
accordance with Section 3 of the Offer to Purchase, Shares so tendered and not
validly withdrawn shall be accepted for payment on a pro rata basis, with
adjustments to avoid purchases of fractional Shares, based upon the number of
Shares validly tendered and not withdrawn by the Expiration Date.
<PAGE>
 
  Unless otherwise indicated herein under "Special Payment Instructions,"
please issue the check for the purchase price and/or any certificates for
Shares not tendered or accepted for payment in the name(s) of the undersigned.
Similarly, unless otherwise indicated under "Special Delivery Instructions,"
please mail the check for the purchase price and/or any certificates for
Shares not tendered or accepted for payment (and accompanying documents, as
appropriate) to the address shown below the undersigned's signature. In the
event that both the Special Delivery Instructions and the Special Payment
Instructions are completed, please issue the check for the purchase price
and/or any certificates for Shares not tendered or accepted for payment in the
name of, and deliver such check and/or such certificates (and accompany
documents, as appropriate) to the person or persons so indicated. Stockholders
delivering Shares by book-entry transfer may request that any Shares not
accepted for payment be returned by crediting such account maintained at the
Book-Entry Transfer Facility as such stockholder may designate by making an
appropriate entry under "Special Payment Instructions." The undersigned
recognizes that the Purchaser has no obligation pursuant to the Special
Payment Instructions to transfer any Shares from the name of the registered
holder thereof if the Purchaser does not accept for payment any of the Shares
so tendered.
 
                         SPECIAL PAYMENT INSTRUCTIONS
                       (SEE INSTRUCTIONS 1, 5, 6 AND 7)
 
  To be completed ONLY if
 certificates for Shares not
 tendered or not accepted for
 payment and/or the check for the
 purchase price of Shares accepted
 for payment are to be issued in the
 name of someone other than the
 undersigned, or if Shares delivered
 by book-entry that are not accepted
 for payment are to be returned by
 credit to an account maintained at
 the Book-Entry Transfer Facility
 other than the account designated
 above.
 
 Issue check and/or certificate to:
 
 Name _______________________________
                                (Please Print)
 
 Address ____________________________
 
 ------------------------------------
                              (Include Zip Code)
 
  Tax Identification or Social
 Security Number (Also Complete
 Substitute Form W-9 below):
 
 ------------------------------------
 
 [_]Credit unpurchased Shares
    delivered by book-entry transfer
    to the Book-Entry Transfer
    Facility account set forth
    below.
 
   Account Number: _________________
 
 
                         SPECIAL DELIVERY INSTRUCTIONS
                       (SEE INSTRUCTIONS 1, 5, 6 AND 7)
 
  To be completed ONLY if
 certificates for Shares not
 tendered or not accepted for
 payment and/or the check for the
 purchase price of Shares accepted
 for payment are to be sent to
 someone other than the undersigned
 or to the undersigned at an address
 other than that indicated above.
 
 Mail check and/or certificate to:
 
 Name: ______________________________
                                (Please Print)
 
 Address: ___________________________
                              (Include Zip Code)
 
<PAGE>
 
                                   SIGN HERE
                   (Also complete Substitute Form W-9 Below)
X ______________________________________________________________________________
X ______________________________________________________________________________
                        (Signature(s) of Stockholder(s))
 
Dated:  , 1998
(Must be signed by registered holder(s) exactly as name(s) appear(s) on the
certificate(s) for the Shares or on a security position listing or by person(s)
authorized to become registered holder(s) by certificates and documents
transmitted herewith. If signature is by trustees, executors, administrators,
guardians, attorneys-in-fact, agents, officers of corporations or others acting
in a fiduciary or representative capacity, please see Instruction 5.)
Name(s): _______________________________________________________________________
 
- --------------------------------------------------------------------------------
                                 (Please Print)
Capacity (Full Title): _________________________________________________________
 
Address: _______________________________________________________________________
 
- --------------------------------------------------------------------------------
                                                         (Include Zip Code)
 
Area Code and Telephone Number: ________________________________________________
 
Taxpayer Identification or Social Security Number: _____________________________
 
                   (ALSO COMPLETE SUBSTITUTE FORM W-9 BELOW)
 
                           GUARANTEE OF SIGNATURE(S)
                    (IF REQUIRED--SEE INSTRUCTIONS 1 AND 5)
 
Authorized Signature: __________________________________________________________
 
Name: __________________________________________________________________________
                                 (Please Print)
Title: _________________________________________________________________________
 
Name of Firm: __________________________________________________________________
 
Address: _______________________________________________________________________
 
- --------------------------------------------------------------------------------
                                                         (Include Zip Code)
 
Area Code and Telephone Number: ________________________________________________
 
Dated:  , 1998
<PAGE>
 
                                 INSTRUCTIONS
 
             FORMING PART OF THE TERMS AND CONDITIONS OF THE OFFER
 
  1. GUARANTEE OF SIGNATURES. Except as otherwise provided below, all
signatures on this Letter of Transmittal must be guaranteed by a member firm
of a registered national securities exchange or a member of the National
Association of Securities Dealers, Inc. or by a commercial bank or trust
company having an office, branch or agency in the United States (an "Eligible
Institution"). No signature guarantee is required on this Letter of
Transmittal if (a) this Letter of Transmittal is signed by the registered
holder(s) of the Shares (which term, for purposes of this document, shall
include any participant in the Book-Entry Transfer Facility whose name appears
on a security position listing as the owner of the Shares) tendered herewith,
and such holder(s) has not completed either the box entitled "Special Delivery
Instructions" or the box entitled "Special Payment Instructions" or (b) such
Shares are tendered for the account of an Eligible Institution. See
Instruction 5.
 
  2. DELIVERY OF LETTER OF TRANSMITTAL AND CERTIFICATES. This Letter of
Transmittal is to be completed by stockholders either if certificates are to
be forwarded herewith or, unless an Agent's Message (as defined in Section 2
of the Offer to Purchase) is utilized, if delivery of Shares is to be made
pursuant to the procedures for delivery by book-entry transfer set forth in
Section 2 of the Offer to Purchase. For a stockholder validly to tender Shares
pursuant to the Offer, either (a) a properly completed and duly executed
Letter of Transmittal (or facsimile thereof), together with any required
signature guarantees (or, in connection with book-entry transfer, an Agent's
Message), and any other documents required by this Letter of Transmittal must
be received by the Depositary at one of its addresses set forth herein prior
to the Expiration Date and either certificates for tendered Shares must be
received by the Depositary at one of such addresses prior to the Expiration
Date or Shares must be delivered pursuant to the procedures for book-entry
transfer set forth herein and a Book-Entry Confirmation (as defined in Section
2 of the Offer to Purchase) must be received with respect to such Shares by
the Depositary prior to the Expiration Date or (b) the tendering stockholder
must comply with the guaranteed delivery procedures set forth below and in
Section 2 of the Offer to Purchase.
 
  Stockholders whose certificates for Shares are not immediately available or
who cannot deliver their certificates and all other required documents to the
Depositary or complete the procedures for book-entry transfer prior to the
Expiration Date may tender their Shares by properly completing and duly
executing the Notice of Guaranteed Delivery pursuant to the guaranteed
delivery procedure set forth in Section 2 of the Offer to Purchase. Pursuant
to such procedure, (a) such tender must be made by or through an Eligible
Institution, (b) a properly completed and duly executed Notice of Guaranteed
Delivery, substantially in the form provided by the Purchaser, must be
received by the Depositary prior to the Expiration Date and (c) the
certificates for all physically delivered Shares or a Book-Entry Confirmation
with respect to all tendered Shares, together with a properly completed and
duly executed Letter of Transmittal (or facsimile thereof), with any required
signature guarantees (or, in connection with a book-entry transfer, an Agent's
Message), and any other documents required by this Letter of Transmittal must
be received by the Depositary within three Nasdaq National Market System
trading days after the date of execution of the Notice of Guaranteed Delivery,
all as provided in Section 2 of the Offer to Purchase.
 
  THE METHOD OF DELIVERY OF THIS LETTER OF TRANSMITTAL, CERTIFICATES FOR
SHARES AND ALL OTHER REQUIRED DOCUMENTS, INCLUDING DELIVERY THROUGH THE BOOK-
ENTRY TRANSFER FACILITY, IS AT THE ELECTION AND RISK OF THE TENDERING
STOCKHOLDER. EXCEPT AS OTHERWISE PROVIDED IN THIS INSTRUCTION 2, THE DELIVERY
WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE DEPOSITARY. IF DELIVERY
IS BY MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED AND PROPERLY INSURED
IS RECOMMENDED. IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE
TIMELY DELIVERY.
 
  No alternative, conditional or contingent tenders will be accepted, and no
fractional Shares will be purchased. All tendering stockholders, by execution
of this Letter of Transmittal (or facsimile thereof), waive any right to
receive any notice of the acceptance of their Shares for payment.
 
  3. INADEQUATE SPACE. If the space provided herein is inadequate, the
certificate numbers and/or the number of Shares should be listed on a separate
signed schedule attached hereto.
 
  4. PARTIAL TENDERS (NOT APPLICABLE TO STOCKHOLDERS WHO TENDER BY BOOK-ENTRY
TRANSFER). If fewer than all the Shares evidenced by any certificate submitted
are to be tendered, fill in the number of Shares which are to be tendered in
the box entitled "Number of Shares Tendered." In such case, new certificate(s)
for the remainder of the Shares that were evidenced by the old certificate(s)
will be sent to you, unless otherwise provided in the appropriate box on this
Letter of Transmittal, as soon as practicable after the expiration of the
Offer. All Shares represented by certificates delivered to the Depositary will
be deemed to have been tendered unless otherwise indicated.
 
  5. SIGNATURES ON LETTER OF TRANSMITTAL; STOCK POWERS AND ENDORSEMENTS. If
this Letter of Transmittal is signed by the registered holder(s) of the Shares
tendered hereby, the signature(s) must correspond exactly with the name(s) as
written on the face of the certificate(s) without alteration, enlargement or
any change whatsoever.
 
  If any of the Shares tendered hereby are owned of record by two or more
joint owners, all such owners must sign this Letter of Transmittal.
 
  If any tendered Shares are registered in different names on several
certificates, it will be necessary to complete, sign and submit as many
separate Letters of Transmittal as there are different registrations of
certificates.
<PAGE>
 
  If this Letter of Transmittal or any certificates or stock powers are signed
by a trustee, executor, administrator, guardian, attorney-in-fact, officer of
a corporation or other person acting in a fiduciary or representative
capacity, such person should so indicate when signing, and proper evidence
satisfactory to the Purchaser of such person's authority so to act must be
submitted.
 
  When this Letter of Transmittal is signed by the registered owner(s) of the
Shares listed and transmitted hereby, no endorsements of certificates or
separate stock powers are required unless payment is to be made to or
certificates for Shares not tendered or purchased are to be issued to a person
other than the registered owner(s). In such case, the certificates must be
endorsed or accompanied by appropriate stock powers, in either case signed
exactly as the name or names of the registered owner or owners appear on the
certificates. Signatures on such certificates or stock powers must be
guaranteed by an Eligible Institution.
 
  If this Letter of Transmittal is signed by a person other than the
registered owner(s) of the Shares listed, the certificates must be endorsed or
accompanied by appropriate stock powers, in either case signed exactly as the
name or names of the registered owner or owners appear on the certificates.
Signatures on such certificates or stock powers must be guaranteed by an
Eligible Institution.
 
  6. STOCK TRANSFER TAXES. Except as set forth in this Instruction 6, the
Purchaser will pay or cause to be paid any stock transfer taxes with respect
to the transfer and sale of Shares to it or its order pursuant to the Offer.
If payment of the purchase price is to be made to, or if certificates for
Shares not tendered or purchased are to be registered in the name of, any
person other than the registered holder, or if tendered certificates are
registered in the name of any person other than the person(s) signing this
Letter of Transmittal, the amount of any stock transfer taxes (whether imposed
on the registered holder or such person) payable on account of the transfer to
such person will be deducted from the purchase price unless satisfactory
evidence of the payment of such taxes or exemption therefrom is submitted.
 
  EXCEPT AS PROVIDED IN THIS INSTRUCTION 6, IT WILL NOT BE NECESSARY FOR
TRANSFER TAX STAMPS TO BE AFFIXED TO THE CERTIFICATES LISTED IN THIS LETTER OF
TRANSMITTAL.
 
  7. SPECIAL PAYMENT AND DELIVERY INSTRUCTIONS. If a check is to be issued in
the name of, and/or certificates for Shares not properly tendered or not
accepted for payment are to be returned to, a person other than the signer of
this Letter of Transmittal or if a check is to be sent and/or such
certificates are to be returned to someone other than the signer of this
Letter of Transmittal or to an address other than that shown above, the
appropriate boxes on this Letter of Transmittal should be completed. Any
stockholder(s) delivering Shares by book-entry transfer may request that
Shares not accepted for payment be credited to such account maintained at the
Book-Entry Transfer Facility as such stockholder(s) may designate hereon. If
no such instructions are given, such Shares will be returned by crediting the
account at the Book-Entry Transfer Facility designated above.
 
  8. WAIVER OF CONDITIONS. Subject to the terms of the Offer, the Purchaser
reserves the right to waive any of those specified conditions of the Offer
which by their terms may be waived by Purchaser, in whole or in part, at any
time and from time to time in the Purchaser's sole discretion, in the case of
any Shares tendered.
 
  9. SUBSTITUTE FORM W-9. Each tendering stockholder must provide the
Depositary with the stockholder's correct Taxpayer Identification Number
("TIN") (i.e., social security number or employer identification number) on
the Substitute Form W-9 set forth below and, unless an exemption applies, must
certify under penalties of perjury that such TIN is correct and that such
stockholder is not subject to backup withholding of Federal income tax. If a
tendering stockholder is subject to backup withholding, the stockholder must
cross out item (2) of the Certification box of the Substitute Form W-9.
Failure to provide the information on the Substitute Form W-9 to the
Depositary may subject the tendering stockholder to 31% Federal income tax
withholding on the payment of the purchase price. In addition, if the
stockholder does not provide such stockholder's correct TIN, the Internal
Revenue Service (the "IRS") may impose a $50 penalty on such stockholder.
 
  Certain stockholders (generally including, among others, corporations and
certain foreign individuals and entities) are not subject to backup
withholding. Foreign individual stockholders and certain foreign entity
stockholders must submit a Form W-8 (Certificate of Foreign Status) to the
Depositary in order to avoid backup withholding. A Form W-8 may be obtained
from the Depositary. Other exempt stockholders should furnish their TIN, write
"Exempt" on the face of the Substitute Form W-9 below and sign, date and
return the Substitute Form W-9 to the Depositary. See the enclosed "Guidelines
for Certification of Taxpayer Identification Number on Substitute Form W-9"
for additional instructions.
 
  If backup withholding applies to a stockholder, the Depositary is required
to withhold 31% of any payments made to such stockholder. Backup withholding
is not an additional income tax. Rather, the amount of backup withholding can
be credited against the Federal income tax liability of the person subject to
backup withholding, provided that the required information is given to the
IRS. If backup withholding results in an overpayment of tax, a refund can be
obtained by the stockholder from the IRS.
 
  The box in Part 3 of the Substitute Form W-9 may be checked if the tendering
stockholder has not been issued a TIN and has applied for a TIN or intends to
apply for a TIN in the near future. If the box in Part 3 is checked, the
stockholder or other payee must also complete the Certificate of Awaiting
Taxpayer Identification Number below in order to avoid backup withholding.
Notwithstanding that the box in Part 3 is checked and the Certificate of
Awaiting Taxpayer Identification Number is completed, the Depositary will
withhold 31% on all payments made prior to the time a properly certified TIN
is provided to the Depository. However, such amounts will be refunded to such
stockholder if a TIN is provided to the Depository within 60 days.
 
  The stockholder is required to give the Depositary the TIN (i.e., social
security number or employer identification number) of the record owner of the
Shares. If the Shares are held in more than one name or are not in the name of
the actual owner, consult the enclosed "Guidelines for Certification of
Taxpayer Identification Number on Substitute Form W-9" for additional guidance
on which number to report.
<PAGE>
 
  10. LOST, DESTROYED OR STOLEN CERTIFICATES. If any certificate(s)
representing Shares has been lost, destroyed or stolen, the stockholder should
promptly notify the Depositary. The stockholder will then be instructed as to
the steps that must be taken in order to replace the certificate(s). This
Letter of Transmittal and related documents cannot be processed until the
procedures for replacing lost or destroyed certificates have been followed.
 
  11. REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES. Requests for assistance
may be directed to, or additional copies of the Offer to Purchase and this
Letter of Transmittal may be obtained from, the Information Agent or the
Dealer Manager at their respective addresses set forth below or from your
broker, dealer, commercial bank or trust company.
 
  IMPORTANT: THIS LETTER OF TRANSMITTAL OR A FACSIMILE THEREOF, WITH ANY
REQUIRED SIGNATURE GUARANTEES, TOGETHER WITH CERTIFICATES FOR, OR A BOOK-ENTRY
TRANSFER CONFIRMATION WITH RESPECT TO, TENDERED SHARES AND ALL OTHER REQUIRED
DOCUMENTS, MUST BE RECEIVED BY THE DEPOSITARY, OR THE NOTICE OF GUARANTEED
DELIVERY MUST BE RECEIVED BY THE DEPOSITARY, PRIOR TO THE EXPIRATION DATE.
<PAGE>
 
                      PAYER'S NAME: [NAME OF DEPOSITARY]
- -------------------------------------------------------------------------------
                   PART 1--PLEASE PROVIDE YOUR TIN IN THE
                   BOX AT RIGHT AND CERTIFY BY SIGNING
                   AND DATING BELOW
 
 SUBSTITUTE
 FORM W-9
 
 DEPARTMENT OF THE TREASURY
                   (2) I am not subject to backup withholding because: (a)
                       I am exempt from backup withholding, or (b) I have
                       not been notified by the Internal Revenue Service
                       (the "IRS") that I am subject to backup withholding
                       as a result of a failure to report all interest or
                       dividends, or (c) the IRS has notified me that I am
                       no longer subject to backup withholding.
 INTERNAL REVENUE SERVICE                                    ----------------
                                                             Social Security
                                                                  Number
 
 PAYER'S REQUEST FOR
 
 TAXPAYER
 IDENTIFICATION                                                     OR
 
 NUMBER ("TIN")
                                                             ----------------
 
 
                                                                 Employer
                                                              Identification
                                                                  Number
                     CERTIFICATION INSTRUCTIONS--You must cross out item
                     (2) above if you have been notified by the IRS that
                     you are currently subject to backup withholding
                     because of underreporting interest or dividends on
                     your tax return. However, if after being notified by
                     the IRS that you are subject to backup withholding,
                     you received another notification from the IRS that
                     you are no longer subject to backup withholding, do
                     not cross out such item (2).
                   PART 2--Certificates--Under penalties of perjury, I certify
                   that:
                   (1) The number shown on this form is my correct Taxpayer
                       Identification Number (or I am waiting for a number
                       to be issued to me) and
                  -----------------------------------------------------------
                  -----------------------------------------------------------
                   SIGNATURE __________________________________  PART 3--
                   DATE _______________________________________
 
 
                                                                 Awaiting
                                                                 TIN ^ [_]
 
 
NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP
     WITHHOLDING OF 31% OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE OFFER.
     PLEASE REVIEW THE ENCLOSED GUIDELINES FOR CERTIFICATION OF TAXPAYER
     IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.
<PAGE>
 
           YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED
                   THE BOX IN PART 3 OF SUBSTITUTE FORM W-9:
 
 
             CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER
 
   I certify under penalties of perjury that a taxpayer identification
 number has not been issued to me, and either (1) I have mailed or delivered
 an application to receive a taxpayer identification number to the
 appropriate Internal Revenue Service Center or Social Security
 Administration Office or (2) I intend to mail or deliver an application in
 the near future. I understand that if I do not provide a taxpayer
 identification number to the Depositary by the time of payment, 31% of all
 reportable payments made to me will be withheld, but that such amounts will
 be refunded to me if I then provide the Depositary a Taxpayer
 Identification Number within sixty (60) days.
 
 Signature: _________________________________________________________________
 
 Date:_______________________________________________________________________
 
 
  Questions and requests for assistance or additional copies of the Offer to
Purchase, this Letter of Transmittal and all other tender offer materials may
be directed to the Information Agent or the Dealer Manager, as set forth below,
and copies will be furnished promptly at the Purchaser's expense.
 
                    The Information Agent for the Offer is:
 
                             D.F. KING & CO., INC.
 
                                77 Water Street
                            New York, New York 10005
                                 1-800-859-8515
                                       or
                          Call Collect (212) 269-5550
 
                      The Dealer Manager for the Offer is:
 
                          SBC WARBURG DILLON READ INC.
 
                               535 Madison Avenue
                            New York, New York 10022
                                 (212) 906-7530

<PAGE>
 
 
                       [LOGO OF SBC WARBURG DILLON READ]
 
                          Offer to Purchase for Cash
                       1,250,000 Shares of Common Stock
                                      of
                            EARTHLINK NETWORK, INC.
                                      at
                             $45.00 NET PER SHARE
                                      by
                              SPRINT CORPORATION
 
 
 THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00
 MIDNIGHT, NEW YORK CITY TIME, ON FRIDAY, MARCH 20, 1998, UNLESS THE OFFER
 IS EXTENDED.
 
 
                                                              February 18, 1998
 
To Brokers, Dealers, Commercial Banks,
Trust Companies And Other Nominees:
 
  We have been engaged by Sprint Corporation, a Kansas corporation (the
"Purchaser") to act as Dealer Manager in connection with the Purchaser's offer
to purchase 1,250,000 shares of Common Stock, par value $.01 per share (the
"Shares"), of EarthLink Network, Inc., a Delaware corporation (the "Company"),
at $45.00 per Share, net to the seller in cash, upon the terms and subject to
the conditions set forth in the Purchaser's Offer to Purchase dated February
18, 1998 (the "Offer to Purchase") and the related Letter of Transmittal
(which, together with any supplements or amendments thereto, collectively
constitute the "Offer") enclosed herewith.
 
  THE OFFER IS CONDITIONED UPON (1) THERE BEING VALIDLY TENDERED AND NOT
WITHDRAWN PRIOR TO THE EXPIRATION OF THE OFFER 1,250,000 SHARES, (2) THE
CONDITIONS TO THE OBLIGATIONS OF SPRINT CORPORATION, SPRINT COMMUNICATIONS
COMPANY L.P., EARTHLINK NETWORK, INC., DOLPHIN, INC., AND DOLPHIN SUB, INC. TO
CONSUMMATE THE TRANSACTIONS CONTEMPLATED BY THE INVESTMENT AGREEMENT (AS
DEFINED HEREIN) HAVING BEEN SATISFIED OR WAIVED AND (3) THE EXPIRATION OR
TERMINATION OF ALL WAITING PERIODS IMPOSED UPON CONSUMMATION OF THE OFFER AND
THE OTHER TRANSACTIONS CONTEMPLATED BY THE INVESTMENT AGREEMENT BY THE HART-
SCOTT-RODINO ANTITRUST IMPROVEMENTS ACT OF 1976, AS AMENDED, AND THE
REGULATIONS THEREUNDER, AS WELL AS THE OTHER CONDITIONS DESCRIBED THEREIN.
 
  For your information and for forwarding to your clients for whom you hold
Shares registered in your name or in the name of your nominee, or who hold
Shares registered in their own names, we are enclosing the following
documents:
 
    1. Offer to Purchase;
<PAGE>
 
    2. Letter of Transmittal to be used by stockholders of the Company in
  accepting the Offer and tendering Shares;
 
    3. The Letter to Stockholders of the Company from the Garry Betty,
  President and Chief Executive Officer of the Company;
 
    4. A letter which may be sent to your clients for whose account you hold
  Shares in your name or in the name of your nominees, with space provided
  for obtaining such clients' instructions with regard to the Offer;
 
    5. Notice of Guaranteed Delivery to be used to accept the Offer if
  certificates for Shares are not immediately available, if the procedure for
  book-entry transfer cannot be completed on a timely basis, or if time will
  not permit all required documents to reach American Stock Transfer & Trust
  Company (the "Depository"), prior to the Expiration Date (as defined in
  Section 1 of the Offer to Purchase);
 
    6. Guidelines of the Internal Revenue Service for Certification of
  Taxpayer Identification Number on Substitute Form W-9; and
 
    7. Return envelope addressed to the Depositary.
 
  The Board of Directors of the Company has, by unanimous vote of all
directors, approved the Offer and the other transactions described in the
Offer to Purchase and determined that the terms of the Offer and such other
transactions, taken together, are fair to, and in the best interests of, the
stockholders of the Company and recommends that all stockholders of the
Company accept the Offer and tender their Shares pursuant to the Offer.
 
  Upon the terms and subject to the conditions of the Offer (including, if the
Offer is extended or amended, the terms and conditions of any such extension
or amendment), the Purchaser will accept for payment and pay for 1,250,000
Shares validly tendered prior to the Expiration Date and not theretofore
properly withdrawn. Payment for Shares purchased pursuant to the Offer will in
all cases be made only after timely receipt by the Depositary of (i)
certificates for such Shares (or timely confirmation of a book-entry transfer
of such Shares into the Depositary's account at The Depository Trust Company
pursuant to the procedures described in Section 2 of the Offer to Purchase),
(ii) a properly completed and duly executed Letter of Transmittal (or
facsimile thereof), with any required signature guarantees (or, in the case of
a book-entry transfer, an Agent's Message (as defined in Section 2 of the
Offer to Purchase)), and (iii) all other documents required by the Letter of
Transmittal.
 
  The Purchaser will not pay any fees or commissions to any broker or dealer
or other person (other than the Dealer Manager, the Depositary and the
Information Agent as described in the Offer to Purchase) in connection with
the solicitation of tenders of Shares pursuant to the Offer. The Purchaser
will, however, upon request, reimburse you for customary mailing and handling
expenses incurred by you in forwarding the enclosed materials to your clients.
 
  The Purchaser will pay or cause to be paid any Stock transfer taxes payable
on the transfer of Shares to it, except as otherwise provided in Instruction 6
of the enclosed Letter of Transmittal.
 
  YOUR PROMPT ACTION IS REQUESTED. WE URGE YOU TO CONTACT YOUR CLIENTS AS
PROMPTLY AS POSSIBLE. THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL
EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME, ON FRIDAY, MARCH 20, 1998,
UNLESS THE OFFER IS EXTENDED.
 
  In order to take advantage of the Offer, a duly executed and properly
completed Letter of Transmittal (or facsimile thereof), with any required
signature guarantees, or an Agent's Message in connection with a book-entry
delivery of Shares, and any other required documents, should be sent to the
Depositary, and certificates representing the tendered Shares should be
delivered or such Shares should be tendered by book-entry transfer, all in
accordance with the Instructions set forth in the Letter of Transmittal and
the Offer to Purchase.
 
                                       2
<PAGE>
 
  If holders of Shares wish to tender, but it is impracticable for them to
forward their certificates or other required documents prior to the expiration
of the Offer, a tender may be effected by following the guaranteed delivery
procedures specified under Section 2, "Procedure for Tendering Shares," in the
Offer to Purchase.
 
  Any inquiries you may have with respect to the Offer should be addressed to
SBC Warburg Dillon Read Inc. or D.F. King & Co., Inc. at their respective
addresses and telephone numbers set forth on the back cover page of the Offer
to Purchase.
 
  Additional copies of the enclosed materials may be obtained from the
undersigned, SBC Warburg Dillon Read, at (212) 906-7530, or by calling the
Information Agent, D.F. King & Co., Inc., at (800) 859-8515, or from brokers,
dealers, commercial banks or trust companies.
 
                                          Very truly yours,
 
                                          SBC Warburg Dillon Read Inc.
 
Enclosures
 
  NOTHING CONTAINED HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL DESIGNATE YOU OR
ANY PERSON AS AN AGENT OF THE PURCHASER, THE DEPOSITARY, THE INFORMATION
AGENT, THE DEALER MANAGER OR ANY AFFILIATE OF ANY OF THE FOREGOING, OR
AUTHORIZE YOU OR ANY OTHER PERSON TO USE ANY DOCUMENT OR MAKE ANY STATEMENTS
ON BEHALF OF ANY OF THEM IN CONNECTION WITH THE OFFER OTHER THAN THE DOCUMENTS
ENCLOSED AND THE STATEMENTS CONTAINED THEREIN.
 
                                       3

<PAGE>
 
                          Offer to Purchase for Cash
                       1,250,000 Shares of Common Stock
                                      of
                            EARTHLINK NETWORK, INC.
                                      at
                             $45.00 NET PER SHARE
                                      by
                              SPRINT CORPORATION
 
 
   THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00
 MIDNIGHT, NEW YORK CITY TIME, ON FRIDAY, MARCH 20, 1998, UNLESS THE OFFER
 IS EXTENDED.
 
 
To Our Clients:
 
  Enclosed for your consideration is an Offer to Purchase dated February 18,
1998 (the "Offer to Purchase") and a related Letter of Transmittal (which,
together with any amendments and supplements thereto, collectively constitute
the "Offer") relating to an offer by Sprint Corporation, a Kansas corporation
(the "Purchaser"), to purchase 1,250,000 shares of Common Stock, par value
$.01 per shares (the "Shares"), of EarthLink Network, Inc., a Delaware
corporation (the "Company"), at a purchase price of $45.00 per Share, net to
the seller in cash, upon the terms and subject to the conditions set forth in
the Offer. Also enclosed is the Letter to Stockholders of the Company from
Garry Betty, President and Chief Executive Officer of the Company. We are the
holder of record of Shares held by us for your account. The Letter of
Transmittal is furnished to you for your information only and cannot be used
by you to tender Shares. A tender for such Shares can be made only by us as
the holder of record and pursuant to your instructions.
 
  We request instructions as to whether you wish to tender any or all of such
Shares held by us for your account, pursuant to the terms and conditions set
forth in the Offer.
 
  Your attention is invited to the following:
 
    1.  The tender price is $45.00 per Share, net to the seller in cash.
 
    2. The Board of Directors of the Company has, by unanimous vote of all
  directors, approved the Offer and the other transactions described in the
  Offer to Purchase and determined that the terms of the Offer and such other
  transactions, taken together, are fair to, and in the best interests of,
  the stockholders of the Company and recommends that all stockholders of the
  Company accept the Offer and tender their Shares pursuant to the Offer.
 
    3. The Offer is being made for 1,250,000 Shares. Upon the terms and
  subject to the conditions of the Offer, if more than 1,250,000 Shares are
  validly tendered prior to the expiration of the Offer and not properly
  withdrawn in accordance with Section 3 of the Offer to Purchase, such
  Shares will be accepted for payment on a pro rata basis (with appropriate
  adjustments to avoid the purchase of fractional Shares) according to the
  number of Shares validly tendered and not properly withdrawn by the
  expiration of the Offer.
 
    4. The Offer is being made pursuant to the Investment Agreement dated as
  of February 10, 1998 among the Purchaser, Sprint Communications Company
  L.P., a Delaware limited partnership, Dolphin, Inc., a Delaware
  corporation, Dolphin Sub, Inc., a Delaware corporation, and the Company
  (the "Investment Agreement").
 
                                       1
<PAGE>
 
    5. The offer is conditioned upon, among other things, there being validly
  tendered and not withdrawn prior to the expiration of the Offer 1,250,000
  shares.
 
    6. The Offer, proration period and withdrawal rights will expire at 12:00
  Midnight, New York time, on Friday, March 20, 1998, unless the Offer is
  extended.
 
    7. Stockholders who tender Shares will not be obligated to pay brokerage
  commissions, solicitation fees or, except as set forth in Instruction 6 of
  the Letter of Transmittal, transfer taxes on the purchase of Shares by the
  Purchaser pursuant to the Offer.
 
  If you wish to have us tender any or all of your Shares, please complete,
sign and return the form set forth on the reverse side of this letter. An
envelope in which you should return your instructions to us is enclosed. Your
instructions to us should be forwarded in ample time to permit us to submit a
tender on your behalf prior to the expiration of the Offer. If you authorize
the tender of your Shares, all such Shares will be tendered unless otherwise
specified on the instruction form set forth on the reverse side of this
letter.
 
                                       2
<PAGE>
 
          INSTRUCTIONS WITH RESPECT TO THE OFFER TO PURCHASE FOR CASH
                   UP TO 1,250,000 SHARES OF COMMON STOCK OF
                            EARTHLINK NETWORK, INC.
 
  The undersigned acknowledge(s) receipt of your letter and the enclosed Offer
to Purchase of Sprint Corporation (the "Purchaser") dated February 18, 1998
and the related Letter of Transmittal (which, together with any amendments or
supplements thereto, collectively constitute the "Offer") relating to the
offer by the Purchaser to purchase 1,250,000 shares of Common Stock, par value
$.01 per share (the "Shares"), of EarthLink Network, Inc., a Delaware
corporation.
 
  This will instruct you to tender to the Purchaser the number of Shares
indicated below (or if no number is indicated below, all Shares) held by you
for the account of the undersigned, on the terms and subject to the conditions
set forth in the Offer.
 
 
 
  Number of Shares to be Tendered*        -------------------------------------
 
 
 __________________________ Shares        -------------------------------------
                                                      Signature(s)
 
 
Account Number: _____________________     -------------------------------------
 
 
Dated: ______________________  , 1998     -------------------------------------
                                                  Please print name(s)
 
                                          Address: ____________________________
                                                   (Include Zip Code)
 
                                          Area Code and Telephone No.: ________
 
                                          -------------------------------------
 
                                          Taxpayer Identification or
                                          Social Security No.: ________________
- --------
   *Unless otherwise indicated, it will be assumed that all of your Shares
   held by us for your account are to be tendered.
 
                                       3

<PAGE>
 
                         Notice of Guaranteed Delivery
                                      for
                       Tender of Shares of Common Stock
                                      of
                            EARTHLINK NETWORK, INC.
                                      to
                              SPRINT CORPORATION
                   (Not to be used for Signature Guarantees)
 
 
 THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00
 MIDNIGHT, NEW YORK CITY TIME, ON FRIDAY, MARCH 20, 1998, UNLESS THE OFFER
 IS EXTENDED.
 
 
  This Notice of Guaranteed Delivery, or one substantially in the form hereof,
must be used to accept the Offer (as defined below) if certificates ("Share
Certificates") representing shares of Common Stock, par value $.01 per share
(the "Shares"), of EarthLink Network, Inc., a Delaware corporation, are not
immediately available, if the procedure for delivery by book-entry transfer
cannot be completed on a timely basis, or if time will not permit all required
documents to reach American Stock Transfer & Trust Company, as Depositary (the
"Depositary") prior to the Expiration Date (as defined in Section 1 of the
Offer to Purchase). Such Notice of Guaranteed Delivery may be delivered by
hand or transmitted by mail, overnight delivery or facsimile transmission to
the Depositary. See Section 2 of the Offer to Purchase.
 
                       The Depositary for the Offer is:
 
                    AMERICAN STOCK TRANSFER & TRUST COMPANY
 
 By Mail, Hand or Overnight Delivery:
 
                                             By Facsimile Transmission:
 
            40 Wall Street                         (718) 234-5001
 
    46th Floor New York, NY 10005          Confirm Receipt of Facsimile by
                                                     Telephone:
 
                                                   (718) 921-8200
 
  DELIVERY OF THIS LETTER OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN AS
SET FORTH ABOVE OR TRANSMISSION VIA A FACSIMILE NUMBER OTHER THAN AS SET FORTH
ABOVE WILL NOT CONSTITUTE A VALID DELIVERY.
 
  THIS FORM IS NOT TO BE USED TO GUARANTEE SIGNATURES. IF A SIGNATURE ON A
LETTER OF TRANSMITTAL IS REQUIRED TO BE GUARANTEED BY AN "ELIGIBLE
INSTITUTION" UNDER THE INSTRUCTIONS THERETO, SUCH SIGNATURE GUARANTEE MUST
APPEAR IN THE APPLICABLE SPACE PROVIDED IN THE LETTER OF TRANSMITTAL.
<PAGE>
 
Ladies and Gentlemen:
 
  The undersigned hereby tenders to Sprint Corporation, a Kansas corporation,
upon the terms and subject to the conditions set forth in the Offer to
Purchase dated February 18, 1998 (the "Offer to Purchase") and the related
Letter of Transmittal (which, together with any amendments or supplements
thereto, collectively constitute the "Offer"), receipt of which is hereby
acknowledged,               Shares pursuant to the guaranteed delivery
procedures set forth in Section 2 of the Offer to Purchase.
Certificate No(s). (if available): ____________________________________________
 
- -------------------------------------------------------------------------------
 
- -------------------------------------------------------------------------------
 
[_] Check here if Shares will be tendered by book-entry transfer:
 
 
Account Number: _______________________________________________________________
 
- -------------------------------------------------------------------------------
 
Dated: __________________________________________________________________, 1998
Name(s) of Record Holder(s): __________________________________________________
 
- -------------------------------------------------------------------------------
 
- -------------------------------------------------------------------------------
                            (Please Type or Print)
 
Address(es): __________________________________________________________________
 
     ----------------------------------------------------------------------
                                    Zip Code
 
Area Code and Tel. No.: _______________________________________________________
 
Signature(s): _________________________________________________________________
 
- -------------------------------------------------------------------------------
                                   GUARANTEE
                   (NOT TO BE USED FOR SIGNATURE GUARANTEE)
 
  The undersigned, a member firm of a registered national securities exchange
or a member of the National Association of Securities Dealers, Inc. or a
commercial bank or trust company having an office, branch or agency in the
United States, hereby (a) represents that the tender of Shares effected hereby
complies with Rule 14e-4 under the Securities Exchange Act of 1934, as amended
and (b) guarantees delivery to the Depositary, at one of its addresses set
forth above, of either certificates representing the Shares tendered hereby,
in proper form for transfer, or a Book-Entry Confirmation (as defined in
Section 2 of the Offer to Purchase) of a transfer of such Shares, in any case
together with a properly completed and duly executed Letter of Transmittal (or
facsimile thereof), with any required signature guarantees, or an Agent's
Message (as defined in Section 2 of the Offer to Purchase), and any other
documents required by the Letter of Transmittal, within three Nasdaq National
Market trading days after the date hereof.
 
- -------------------------------------     -------------------------------------
            Name of Firm                          Authorized Signature
 
- -------------------------------------     -------------------------------------
               Address                                    Title
 
- -------------------------------------
                             Zip Code
 
Area Code and Tel. No.: _____________     Dated: ________________________, 1998
 
NOTE: DO NOT SEND CERTIFICATES FOR SHARES WITH THIS NOTICE. SHARE CERTIFICATES
SHOULD BE SENT WITH YOUR LETTER OF TRANSMITTAL.
 
                                       2

<PAGE>
 
            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9
 
GUIDELINES FOR DETERMINING THE PROPER IDENTIFICATION NUMBER TO GIVE THE PAYER.
Social Security numbers have nine digits separated by two hyphens: i.e. 000-
00-0000. Employer identification numbers have nine digits separated by only
one hyphen: i.e. 00-0000000. The table below will help determine the number to
give the payer.
 
- --------------------------------------- ---------------------------------------
<TABLE>
<CAPTION>
FOR THIS TYPE OF        GIVE THE
ACCOUNT:                SOCIAL SECURITY
                        NUMBER OF:
- -----------------------------------------------
<S>                     <C>
1. An individual's      The individual
   account
2. Two or more          The actual owner of the
   individuals          account or, if combined
   (joint account)      funds, the first
                        individual on the
                        account (1)
3. Custodian account    The minor(2)
   of a minor (Uniform
   Gift to Minors Act)
4.a. The usual          The grantor-trustee(1)
     revocable savings
     trust (grantor is
     also trustee)
b. So-called trust      The actual owner(1)
   account that is not
   a legal or valid
   trust under state
   law
5. Sole proprietorship  The owner(3)
</TABLE>
<TABLE>
<CAPTION>
                                                                                                    GIVE THE EMPLOYER
FOR THIS TYPE OF ACCOUNT:                                                                           IDENTIFICATION
                                                                                                    NUMBER OF:
                                        ----------------------------------------------------------------
<S>                                                                                                 <C>
 6. Sole proprietorship                                                                             The owner (3)
 7. A valid trust, estate, or pension trust                                                         The legal entity (Do
                                                                                                    not furnish the
                                                                                                    identifying number of
                                                                                                    the personal
                                                                                                    representative or
                                                                                                    trustee unless the
                                                                                                    legal entity itself is
                                                                                                    not designated in the
                                                                                                    account title.)(4)
 8. Corporate account                                                                               The corporation
 9. Association, club, religious, charitable, educational or other tax-exempt organization account  The organization
10. Partnership account                                                                             The partnership
11. A broker or registered nominee                                                                  The broker or nominee
12. Account with the Department of Agriculture in the name of a public entity (such as a state or   The public entity
    local government, school district, or prison) that receives agricultural program payments
                                        ----------------------------------------------------------------
</TABLE>
 
(1) List first and circle the name of the person whose number you furnish. If
    only one person on a joint account has a social security number, that
    person's number must be furnished.
 
- ---------------------------------------
(2) Circle the minor's name and furnish the minor's social security number.
(3) You must show your individual name, but you may also enter your business
    or "doing business as" name. You may use either your social security
    number or employer identification number (if you have one).
(4) List first and circle the name of the legal trust, estate, or pension
    trust.
 
NOTE:  If no name is circled when there is more than one name listed, the
       number will be considered to be that of the first name listed.
<PAGE>
 
            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER OF SUBSTITUTE FORM W-9
 
                                    Page 2
OBTAINING A NUMBER
If you don't have a taxpayer identification number or you don't know your
number, obtain Form SS-5, Application for a Social Security Number Card (for
individuals), or Form SS-4, Application for an Employer Identification Number
(for businesses and all other entities), at the local office of the Social
Security Administration or the Internal Revenue Service and apply for a
number.
 
PAYEES EXEMPT FROM BACKUP WITHHOLDING
The following is a list of payees exempt from backup withholding and for which
no information reporting is required. For interest and dividends, all listed
payees are exempt except item (9). For broker transactions, payees listed in
items (1) through (13) and a person registered under the Investment Advisors
Act of 1940 who regularly acts as a broker are exempt. Payments subject to
reporting under sections 6041 and 6041A are generally exempt from backup
withholding only if made to payees described in items (1) through (7), except
a corporation (other than certain hospitals described in Regulations section
1.6041-3(c)) that provides medical and health care services or bills and
collects payments for such services is not exempt from backup withholding or
information reporting. Only payees described in items (1) through (5) are
exempt from backup withholding for barter exchange transactions and patronage
dividends.
 (1) An organization exempt from tax under section 501(a), or an IRA, or a
     custodial account under section 403(b)(7), if the account satisfies the
     requirements of section 401(f)(2).
 (2) The United States or any of its agencies or instrumentalities.
 (3) A state, the District of Columbia, a possession of the United States, or
     any of their political subdivisions or instrumentalities.
 (4) A foreign government or any of its political subdivisions, agencies or
     instrumentalities.
 (5) An international organization or any of its agencies or
     instrumentalities.
 (6) A corporation.
 (7) A foreign central bank of issue.
 (8) A dealer in securities or commodities required to register in the United
     States, the District of Columbia or a possession of the United States.
 (9) A futures commission merchant registered with the Commodity Futures
     Trading Commission.
(10) A real estate investment trust.
(11) An entity registered at all times during the tax year under the
     Investment Company Act of 1940.
(12) A common trust fund operated by a bank under section 584(a).
(13) A financial institution.
(14) A middleman known in the investment community as a nominee or listed in
     the most recent publication of the American Society of Corporate
     Secretaries, Inc., Nominee List.
(15) A trust exempt from tax under section 664 or described in section 4947.
Payments of dividends and patronage dividends that generally are exempt from
backup withholding include the following:
  . Payments to nonresident aliens subject to withholding under section 1441.
  . Payments to partnerships not engaged in a trade or business in the U.S.
    and which have at least one nonresident alien partner.
  . Payments of patronage dividends not paid in money.
  . Payments made by certain foreign organizations.
  . Section 404(k) payments made by an ESOP.
Payments of interest that generally are exempt from backup withholding include
the following:
  . Payments of interest on obligations issued by individuals. Note: You may
    be subject to backup withholding if this interest is $600 or more and is
    paid in the course of the payer's trade or business and you have not
    provided your correct taxpayer identification number to the payer.
  . Payments of tax-exempt interest (including exempt-interest dividends
    under section 852).
  . Payments described in section 6049(b)(5) to nonresident aliens.
  . Payments on tax-free covenant bonds under section 1451.
  . Payments made by certain foreign organizations.
  . Payments of mortgage interest.
Exempt payees described above should file Form W-9 to avoid possible erroneous
backup withholding. FILE THIS FORM WITH THE PAYER, FURNISH YOUR TAXPAYER
IDENTIFICATION NUMBER, WRITE "EXEMPT" ON THE FACE OF THE FORM, SIGN AND DATE
THE FORM AND RETURN IT TO THE PAYER. IF YOU ARE A NONRESIDENT ALIEN OR A
FOREIGN ENTITY NOT SUBJECT TO BACKUP WITHHOLDING, FILE WITH THE PAYER A
COMPLETED INTERNAL REVENUE FORM W-8 (CERTIFICATE OF FOREIGN STATUS).
Payments, that are not subject to information reporting are also not subject
to backup withholding. For details, see sections 6041, 6041A, 6042, 6044,
6045, 6049, 6050A and 6050N and the regulations promulgated thereunder.
PRIVACY ACT NOTICE. Section 6109 requires most recipients of dividend,
interest, or other payments to give taxpayer identification numbers to payers
who must report the payments to IRS. The IRS uses the numbers for
identification purposes and to help verify the accuracy of recipients' tax
returns. Payers must be given the numbers whether or not recipients are
required to file tax returns. Payers must generally withhold 31% of taxable
interest, dividend, and certain other payments to a payee who does not furnish
a taxpayer identification number to a payer. Certain penalties may also apply.
 
PENALTIES
(1) PENALTY FOR FAILURE TO FURNISH TAXPAYER IDENTIFICATION NUMBER. If you fail
    to furnish your taxpayer identification number to a payer, you are subject
    to a penalty of $50 for each such failure unless your failure is due to
    reasonable cause and not to willful neglect.
(2) CIVIL PENALTY FOR FALSE INFORMATION WITH RESPECT TO WITHHOLDING. If you
    make a false statement with no reasonable basis which results in no
    imposition of backup withholding, you are subject to a penalty of $500.
(3) CRIMINAL PENALTY FOR FALSIFYING INFORMATION. Willfully falsifying
    certifications or affirmations may subject you to criminal penalties
    including fines and/or imprisonment.
FOR ADDITIONAL INFORMATION CONTACT YOUR TAX CONSULTANT OR THE INTERNAL REVENUE
SERVICE

<PAGE>
                                                                  EXHIBIT (A)(7)
FOR IMMEDIATE RELEASE                   
- ---------------------              
                                                   Contacts:      Kirsten Kappos
                                                         EARTHLINK NETWORK, INC.
                                                                    800-949-6903
                                                          [email protected]

                                                                     Jeff Shafer
                                                                    SPRINT CORP.
                                                                    913-624-4887
                                                        [email protected]

                                                 Leasa Vignale/Kelly Fitzsimmons
                                                          MANNING, SELVAGE & LEE
                                                      213-782-6600, ext. 235/268
                                                     lvignale/[email protected]




               EARTHLINK AND SPRINT ANNOUNCE STRATEGIC ALLIANCE
               ------------------------------------------------

                EARTHLINK-SPRINT ALLIANCE STRENGTHENS EARTHLINK
            AND GIVES SPRINT A FIRM FOOTHOLD IN THE INTERNET MARKET

UNIFIED SERVICE ENABLES BOTH COMPANIES TO RAPIDLY EXPAND INTERNET MARKET SHARE

        PASADENA, CALIF., February 11, 1998 - EarthLink Network, Inc. (NASDAQ: 
ELNK) and Sprint Corporation (NYSE:FON) announced today a long-term strategic 
alliance that creates one of the industry's most powerful Internet access 
services. EarthLink and Sprint will create a single, unified Internet service 
that will have the potential to reach millions of new customers while both 
companies achieve prominent positions in the Internet services market. It is the
strategic intent of both companies for EarthLink to remain an independent 
company with the flexibility to pursue its strategic objectives. As part of the 
alliance, Sprint agrees to make a minority investment in EarthLink. The two 
companies will establish a broad business relationship, which includes the 
contribution of selected assets and significant commercial commitments.

        EarthLink will obtain Sprint's Internet Passport customer base, 
approximately $24 million in cash, $100 million in convertible debt financing, 
access to Sprint's branded marketing and distribution channels, a five-year 
commitment from Sprint to deliver a minimum of 150,000 new customers annually 
and preferred access to Sprint's world-class data network. 

        In exchange, Sprint will receive 4.1 million shares of convertible 
preferred stock in EarthLink. In addition, Sprint will initiate a tender offer 
to purchase 1.25 million shares of EarthLink common stock at $45 per share. The 
sum of common and preferred shares Sprint receives at the time of closing will 
represent a 10 percent voting interest and approximately a 30 percent economic 
interest in

<PAGE>
 
2-2-2 EarthLink and Sprint Announce Strategic Alliance
- ------------------------------------------------------

EarthLink. Sprint will also secure two seats on EarthLink's board of directors, 
one of which will be occupied by William T. Esrey, chairman and chief executive 
officer of Sprint.

        The alliance between EarthLink and Sprint allows both companies to 
balance their financial and strategic interests as well as capitalize on each 
other's key strengths. The alliance preserves EarthLink's independence and 
entrepreneurial spirit and provides Sprint with a significant enhancement to its
strategic investment in the Internet market. It also enables EarthLink to 
immediately expand its member base by 25 percent to approximately 600,000 
members, leverage the resources and equity of the Sprint brand, and accelerate 
its future growth. 

        The alliance enables Sprint to continue its build its brand recognition 
in the Internet market and deliver Internet access services to its large 
telecommunications customer base, while focusing on the marketing and networking
capabilities that are its strongest asset.

        "EarthLink has always delivered the easiest, most friendly and useful 
Internet access service available," said Sky Dayton, founder and chairman of 
EarthLink Network. "The EarthLink-Sprint alliance takes our company to the next 
level. The alliance pairs EarthLink with one of the most powerful brands in the 
world, helping us bring our services to millions of potential new members in the
coming years."

        Added Esrey, "This alliance strengthens Sprint's position in the 
Internet access industry, teaming Sprint with a nimble, growth-oriented company 
that shares our commitment to fast, reliable, responsive products and 
technologies. Through this agreement, we are able to enhance our Internet 
offering while continuing to deliver the highest quality service."
        
        The unified EarthLink-Sprint Internet service, sharing both companies' 
brands, will be promoted through various EarthLink and Sprint marketing 
channels. Sprint's marketing channels include outlets like airlines, cable 
companies, colleges/universities, financial institutions and retail outlets such
as Radio Shack, in addition to sponsorships like the NFL, Rolling Stones and the
U.S. Ski Team. The EarthLink-Sprint service will also be bundled with various 
existing Sprint consumer and small business products and services. 

        "It's a great marriage," said Charles (Garry) Betty, president and chief
executive officer of EarthLink. "This alliance with Sprint enables us to 
strengthen our brand, immediately expand our member base by 25 percent to 
approximately 600,000, increase our marketing efforts and lock in a low-cost 
network commitment. Now EarthLink is even better positioned to aggressively 
grow our business. The alliance puts the power of Sprint's marketing and sales 
channels behind EarthLink, expanding our reach deeper into the mass market of 
consumers and businesses which have yet to get on the Internet."


<PAGE>
 
3-3-3 EarthLink and Sprint Announce Strategic Alliance
- ------------------------------------------------------

        "Sprint has been relentless in its focus on delivering high-performance 
products and services over one of the fastest, most advanced networks in the 
world," said Gary Forsee, president and chief operating officer, Sprint Long 
Distance Division. "The alliance with EarthLink enables us to efficiently
provide a host of high-quality Internet services to Sprint customers, while
building our brand equity and market share in the Internet."

THE DEAL - A SNAPSHOT
- --------------------

        The terms of the deal involve many components:

        1)      Sprint will purchase approximately 30 percent minority stake in 
                EarthLink, as follows:
                . Sprint will initiate a tender offer for 1.25 million EarthLink
                  common shares at $45 per share;                
                . Sprint will receive 4.1 million shares of convertible
                  preferred stock directly from EarthLink; and  
                . Sprint will secure status as the exclusive telecommunications 
                  provider promoted in EarthLink's channel.
        2)      In exchange for 4.1 million preferred shares and the right to 
                tender for 1.25 million common shares, Sprint will provide 
                EarthLink with:
                . All of Sprint's approximately 130,000 Internet Passport 
                  subscribers;              
                . A five-year commercial agreement for Sprint to promote 
                  EarthLink through its marketing channels, including 
                  commitments to generate a minimum of 150,000 new EarthLink 
                  members annually;
                . A four-year network contract allowing EarthLink to utilize 
                  Sprint's world-class data IP network at favorable prices;
                . Approximately $24 million in cash;
                . A $100 million line of credit in the form of convertible debt 
                  for EarthLink's use, available incrementally over the first 
                  three years; and
                . Agency status to bundle Sprint's telecommunications services 
                  with EarthLink services.
        3)      The parties have entered into a governance agreement that sets
                forth the rights and restrictions governing the corporate
                relationship between EarthLink and Sprint.

        EarthLink will manage the operations, customer service, technical 
support and product development for the unified Internet service. EarthLink and 
Sprint will work together on marketing, sales and product development. By 
sharing the use of their best assets, EarthLink and Sprint will each focus on 
their core businesses, enhancing their combined prospects for growth and 
success.

EXPANDED SERVICES
- -----------------

        Customers are the biggest winners in this alliance. EarthLink's existing
members gain access to another high-speed, reliable dial-up access network which
will support x2 technology nationwide. EarthLink expands its local access POPs 
to more than 1,200 - more than any other Internet or online service provider. 
EarthLink also becomes the only ISP to support both x2 and k56flex nationwide


               
<PAGE>
 
4-4-4 EarthLink and Sprint Announce Strategic Alliance
- ------------------------------------------------------

through more than 500 56k POPs. In addition, as a full-service communications 
provider, the alliance enables Sprint to offer integrated billing and multiple 
communications services to EarthLink's customers. EarthLink also bolsters its 
financial position, ensuring it will continue to have the resources to scale up
while providing excellent service.

        Through the unified offering, Sprint's Internet Passport customers will 
have access to an expanded set of services. These service features include a 
Personal Start Page (TM), a 6 MB free homepage, options to purchase extra email 
boxes, vanity domains and low-cost Web sites, access from more than 1,200 POPs 
which support both k56flex and x2 technologies, and continued exceptional 
technical support.

        Deutsche Morgan Grenfell served as EarthLink's sole advisor for this 
transaction. 

ABOUT SPRINT
- ------------

        Sprint is a global communications company at the forefront in 
integrating long distance, local and wireless communications services, and one 
of the world's largest carriers of Internet traffic. Sprint built and operates 
the United State's only nationwide all-digital, fiber-optic network and is the 
leader in advanced data communications services. Sprint has $14 billion in 
annual revenues and serves more than 16 million business and residential 
customers. 

ABOUT EARTHLINK NETWORK
- -----------------------

        EarthLink Network is the world's largest independent Internet service 
provider. Through a full range of innovative access and hosting services, the 
company makes the Internet relevant and productive to hundreds of thousands of 
individuals and businesses every day. Headquartered in Pasadena, EarthLink 
provides local access to thousands of communities from more than 1,110 POPs in 
North America and 42 internationally. Additional service and pricing information
is available by calling (800)395-8425 and through EarthLink's Web site at 
http://www.earthlink.net. 

Sprint Internet Passport is a service mark of Sprint Communications Company. All
other brand and product names are trademarks and/or service marks of their 
respective companies. 

This release contains forward-looking statements within the meaning of the "safe
harbor" provisions of the Private Securities Litigation Reform Act of 1995. Such
statements are based on management's current expectations or beliefs and are 
subject to a number of factors and uncertainties which could cause actual 
results to differ materially from those described in the forward-looking 
statements. In particular, careful consideration should be given to cautionary 
statements made in each Companies' reports filed with the Securities and 
Exchange Commission.




<PAGE>
 
- --------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 ------------------------------------------------------------------------------
 
 
 
 
 
 
 This announcement  is neither an offer  to purchase nor a solicitation  of an
   offer to sell Shares.  The Offer is made solely  by the Offer to Purchase
    dated  February 18, 1998 and the  related Letter of Transmittal  and is
      being made to all holders of Shares. The Offer is not being made to
        (nor will tenders be accepted from  or on behalf of) holders  of
         Shares in any  jurisdiction in which the making  of the Offer
           or the acceptance thereof would not be in compliance with
            the  laws  of such  jurisdiction.  In any  jurisdiction
              where  the  securities,  blue  sky  or  other  laws
                require the  Offer  to  be made  by  a  licensed
                 broker or dealer, the Offer will be deemed to
                   be made  on behalf  of Sprint  Corporation
                    by  SBC Warburg Dillon  Read or  one or
                      more registered  brokers or dealers
                      licensed  under  the  laws of  such
                      jurisdiction.
 
                      NOTICE OF OFFER TO PURCHASE FOR CASH
 
                        1,250,000 SHARES OF COMMON STOCK
 
                                       OF
 
                            EARTHLINK NETWORK, INC.
 
                                       AT
 
                              $45.00 NET PER SHARE
 
                                       BY
 
                               SPRINT CORPORATION
 
  Sprint Corporation, a Kansas corporation (the "Purchaser"), is offering to
purchase 1,250,000 shares of Common Stock, par value $0.01 per share (the
"Shares"), of EarthLink Network, Inc., a Delaware corporation (the "Company"),
at $45.00 per Share, net to the seller in cash, upon the terms and subject to
the conditions set forth in the Offer to Purchase dated February 18, 1998 (the
"Offer to Purchase") and in the related Letter of Transmittal (which, together
with any amendments or supplements thereto, collectively constitute the
"Offer").
 
 
             THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL
            EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME, ON FRIDAY,
                 MARCH 20, 1998, UNLESS THE OFFER IS EXTENDED.
 
 
  THE OFFER IS CONDITIONED UPON (1) THERE BEING VALIDLY TENDERED AND NOT
WITHDRAWN PRIOR TO THE EXPIRATION DATE (AS DEFINED BELOW) 1,250,000 SHARES, (2)
THE CONDITIONS TO THE OBLIGATIONS OF THE PURCHASER, SPRINT COMMUNICATIONS
COMPANY L.P., A DELAWARE LIMITED PARTNERSHIP ("SPRINT L.P."), DOLPHIN, INC., A
DELAWARE CORPORATION ("NEWCO"), DOLPHIN SUB, INC., A DELAWARE CORPORATION
("NEWCO SUB") AND THE COMPANY TO CONSUMMATE THE OFFER AS DESCRIBED IN THE OFFER
TO PURCHASE HAVING BEEN SATISFIED OR WAIVED AND (3) THE EXPIRATION OR
TERMINATION OF ALL WAITING PERIODS IMPOSED UPON CONSUMMATION OF THE OFFER AND
THE OTHER TRANSACTIONS DESCRIBED IN THE OFFER TO PURCHASE BY THE HART-SCOTT-
RODINO ANTITRUST IMPROVEMENTS ACT OF 1976, AS AMENDED, AND THE REGULATIONS
THEREUNDER, AS WELL AS THE OTHER CONDITIONS DESCRIBED IN THE OFFER TO PURCHASE.
  The Purchaser and the Company have determined to enter into a strategic
alliance to provide Internet access and related services on a collaborative
basis. The purpose of the Offer and the related investments being made by the
Purchaser pursuant to the Investment Agreement is to benefit from the enhanced
capabilities for growth and financial and strategic success by joining forces
with the Company, but not to acquire or influence control of the Company's
business.
  The Offer is being made pursuant to an Investment Agreement, dated as of
February 10, 1998 among the Purchaser, Sprint L.P., Newco, Newco Sub and the
Company (the "Investment Agreement"). Upon consummation of the transactions
contemplated by the Investment Agreement, including the Offer, the Purchaser
will own approximately 11.1% of the total number of issued and outstanding
Shares (based on the number of Shares outstanding as of February 13, 1998).
  Immediately following consummation of the Offer, Newco Sub will merge into
the Company (the "Merger") and all of the Company's outstanding Shares will be
converted into common stock, par value $.01 per share of Newco ("Newco Common
Stock"), except for Shares receivable upon the exercise of warrants and certain
other rights to acquire Shares which are not amended prior to the Merger to
become exercisable only for Newco Common Stock (which are not expected to
exceed 8% of the outstanding Shares after the Merger). In connection with the
Merger, Sprint L.P. will transfer all of its Internet subscribers and certain
other assets in exchange for convertible preferred stock of Newco which, upon
conversion, would result in the Purchaser and its affiliates owning, together
with the Shares acquired in the Offer and converted in the Merger into Newco
Common Stock, approximately 26.6% of the shares of Newco Common Stock on a
fully diluted basis (increasing to 28.8%, in the aggregate, on fully diluted
basis upon payment of all payment-in-kind dividends on such convertible
preferred stock and subsequent conversion of Newco Common Stock). As used
herein, "fully diluted basis" takes into account the conversion or exercise of
all outstanding options and other warrants and securities exercisable and
convertible into shares of Newco Common Stock. The Purchaser has also agreed to
loan Newco and the Company up to $100 million over the next three years, which
indebtedness will be convertible into Newco Common Stock at the rate of 130% of
the average market price of Newco Common Stock for the 30 trading days
preceding the applicable loan.
  As a condition and inducement to the Offer, the Merger and the other
transactions contemplated by the Investment Agreement, certain stockholders of
the Company owning 35.3% of the outstanding Shares have agreed to tender their
Shares into the Offer and certain stockholders of the Company owning 61.4% of
the outstanding Shares have agreed to vote their Shares in favor of the Merger
and such other transactions.
  THE BOARD OF DIRECTORS OF THE COMPANY HAS, BY UNANIMOUS VOTE OF ALL
DIRECTORS, APPROVED THE OFFER AND THE OTHER TRANSACTIONS DESCRIBED IN THE OFFER
TO PURCHASE AND DETERMINED THAT THE TERMS OF THE OFFER AND SUCH OTHER
TRANSACTIONS, TAKEN TOGETHER, ARE FAIR TO, AND IN THE BEST INTERESTS OF, THE
STOCKHOLDERS OF THE COMPANY AND RECOMMENDS THAT ALL STOCKHOLDERS OF THE COMPANY
ACCEPT THE OFFER AND TENDER THEIR SHARES PURSUANT TO THE OFFER.
<PAGE>
 
 
 
 
 
 
 ------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
  For purposes of the Offer, the Purchaser will be deemed to have accepted for
payment, and thereby purchased, Shares that have been validly tendered and not
properly withdrawn as, if and when the Purchaser gives oral or written notice
to American Stock Transfer & Trust Company (the "Depositary") of the
Purchaser's acceptance for payment of such Shares. Upon the terms and subject
to the conditions of the Offer, payment for Shares accepted for payment
pursuant to the Offer will be made by deposit of the purchase price therefor
with the Depositary, which will act as agent for tendering stockholders for the
purpose of receiving payment from the Purchaser and transmitting such payment
to tendering stockholders. In all cases, payment for shares accepted for
payment pursuant to the Offer will be made only after timely receipt by the
Depositary of (i) certificates for such Shares (or timely confirmation of book-
entry transfer of such Shares into the Depositary's account at The Depository
Trust Company pursuant to the procedures described in Section 2 of the Offer to
Purchase), (ii) a properly completed and duly executed Letter of Transmittal
(or facsimile thereof) with any required signature guarantees (or, in the case
of a book-entry transfer, an Agent's Message (as defined in Section 2 of the
Offer to Purchase)), and (iii) any other documents required by the Letter of
Transmittal. Under no circumstances will interest be paid on the purchase
price, regardless of any extension of the Offer or any delay in making such
payment.
  The term "Expiration Date" means 12:00 Midnight, New York City time, on
Friday, March 20, 1998, unless and until the Purchaser shall have extended the
period of time during which the Offer is open, in which event the term
"Expiration Date" shall mean the latest time and date on which the Offer, as so
extended by the Purchaser, shall expire. The Purchaser expressly reserves the
right, in its sole discretion (but subject to the terms of the Investment
Agreement), at any time or from time to time, to extend the period of time
during which the Offer is open and thereby delay acceptance for payment of, and
the payment for, any Shares, by giving oral or written notice of such extension
to the Depositary. The Purchaser shall not have any obligation to pay interest
on the purchase price for tendered Shares in the event the period of time
during which the Offer is open is extended for any reason. Due to the need for
a special meeting of the Company's stockholders to be held to obtain approval
of the Merger and related matters, it is anticipated that the Purchaser will
extend the period of time in which the Offer is open. However, there can be no
assurance that the Purchaser will exercise its right to extend the Offer (other
than as required by the Investment Agreement). Any extension of the Offer will
be followed by a public announcement thereof no later than 9:00 a.m. New York
City time, on the next business day after the previously scheduled Expiration
Date. During any such extension, all Shares previously tendered and not
withdrawn will remain subject to the Offer, subject to the right of a tendering
stockholder to withdraw such stockholder's Shares.
  If more than 1,250,000 Shares are validly tendered prior to the Expiration
Date and not properly withdrawn, the Purchaser will, upon the terms and subject
to the conditions of the Offer, accept such Shares for payment on a pro rata
basis, with adjustments to avoid purchases of fractional Shares, based upon the
number of Shares validly tendered prior to the Expiration Date and not properly
withdrawn. Because of the difficulty of determining precisely the number of
Shares validly tendered and not properly withdrawn, if proration is required,
the Purchaser would not expect to announce the final results of proration
immediately after the Expiration Date. The Purchaser will announce the
preliminary results of proration by press release as promptly as practicable
after the Expiration Date, and expects to be able to announce the final results
of proration approximately three Nasdaq National Market trading days after the
Expiration Date. Holders of Shares may obtain such preliminary information and
final results from the Depositary or the Information Agent, and also may be
able to obtain such information from their brokers.
  Except as otherwise provided in this paragraph, tenders of Shares are
irrevocable. Shares tendered pursuant to the Offer may be withdrawn at any time
prior to the Expiration Date, and, unless theretofore accepted for payment and
paid for by the Purchaser pursuant to the Offer, may also be withdrawn at any
time after April 20, 1998. For a withdrawal to be effective, a written or
facsimile transmission notice of withdrawal must be timely received by the
Depositary at one of its addresses set forth on the back cover of the Offer to
Purchase and must specify the name of the person having tendered the Shares to
be withdrawn, the number of Shares to be withdrawn and the name of the
registered holder of the Shares to be withdrawn, if different from the name of
the person who tendered the Shares. If certificates for Shares to be withdrawn
have been delivered or otherwise identified to the Depositary, then, prior to
the physical release of such certificates, the serial numbers shown on such
certificates must be submitted to the Depositary and, unless such Shares have
been tendered by an Eligible Institution (as defined in Section 2 of the Offer
to Purchase), the signatures on the notice of withdrawal must be guaranteed by
an Eligible Institution. If Shares have been tendered pursuant to the
procedures for book-entry transfers as set forth in Section 2 of the Offer to
Purchase, any notice of withdrawal must also specify the name and number of the
account at the appropriate Book-Entry Transfer Facility to be credited with the
withdrawn Shares and otherwise comply with such Book-Entry Transfer Facility's
procedures. Withdrawals of tenders of Shares may not be rescinded, and any
Shares properly withdrawn will thereafter be deemed not validly tendered for
any purposes of the Offer. However, withdrawn Shares may be retendered by again
following one of the procedures described in Section 2 of the Offer to Purchase
at any time prior to the Expiration Date. All questions as to the form and
validity (including time of receipt) of notices of withdrawal will be
determined by the Purchaser in its sole discretion, whose determination will be
final and binding.
  The Company has agreed to furnish the Purchaser with copies of the Company's
stockholder lists and security position listings. The Offer to Purchase and the
related Letter of Transmittal and other relevant materials will be mailed to
record holders of Shares and furnished to brokers, dealers, commercial banks,
trust companies and similar persons whose names, or the names of whose
nominees, appear on the Company's stockholders lists or, if applicable, who are
listed as participants in a clearing agency's security position listing, for
subsequent transmittal to beneficial owners of Shares.
  The information required to be disclosed by Rule 14d-6(e)(1)(vii) of the
General Rules and Regulations under the Securities Exchange Act of 1934, as
amended, is contained in the Offer to Purchase and is incorporated herein by
reference.
  THE OFFER TO PURCHASE AND THE LETTER OF TRANSMITTAL CONTAIN IMPORTANT
INFORMATION WHICH SHOULD BE READ CAREFULLY BEFORE ANY DECISION IS MADE WITH
RESPECT TO THE OFFER.
  Requests for copies of the Offer to Purchase, the Letter of Transmittal and
all other tender offer materials may be directed to the Information Agent or
the Dealer Manager as set forth below, and copies will be furnished promptly at
the Purchaser's expense.
  Questions or requests for assistance may be directed to the Information Agent
or the Dealer Manager.
                    THE INFORMATION AGENT FOR THE OFFER IS:
                             D.F. KING & CO., INC.
                                77 Water Street
                            New York, New York 10005
                            Toll-free 1-800-859-8515
                                       or
                          Call Collect (212) 269-5550
                      THE DEALER MANAGER FOR THE OFFER IS:
                          SBC WARBURG DILLON READ INC.
                               535 Madison Avenue
                            New York, New York 10022
                                 (212) 906-7530
 
February 18, 1998

<PAGE>


                                                              EXHIBIT NO. (C)(1)
================================================================================


                             INVESTMENT AGREEMENT


                                     AMONG


                              SPRINT CORPORATION,
                             A KANSAS CORPORATION



                      SPRINT COMMUNICATIONS COMPANY L.P.,
                        A DELAWARE LIMITED PARTNERSHIP



                                DOLPHIN, INC.,
                            A DELAWARE CORPORATION



                              DOLPHIN SUB, INC.,
                            A DELAWARE CORPORATION



                                      AND



                           EARTHLINK NETWORK, INC.,
                            A DELAWARE CORPORATION.


                         DATED AS OF FEBRUARY 10, 1998

================================================================================
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                          PAGE
                                                                                          ----
<S>                                                                                       <C>
ARTICLE I      THE OFFER AND FINANCING.....................................................  2
     1.01.  The Offer......................................................................  2
     1.02.  Company Actions................................................................  3
     1.03.  Issuance of Convertible Preferred Stock........................................  4
     1.04.  Marketing Agreement............................................................  5
     1.05.  Convertible Debt Financing.....................................................  5
     1.06.  Merger of Newco Sub into the Company and Conversion of
              Company into Newco Stock.....................................................  6
     1.07.  Governance Agreement and Stockholders Agreement................................  7
     1.08.  Registration Rights Agreement..................................................  8
     1.09.  Closing........................................................................  8

ARTICLE II     CONDITIONS TO OFFER AND CLOSING............................................. 12
     2.01.  Mutual Conditions to Offer..................................................... 12
     2.02.  Conditions to Offer for Benefit of Sprint and Sprint L.P....................... 13
     2.03.  Conditions to Offer for Benefit of the Company, Newco, and Newco Sub........... 15
     2.04.  Condition to Closing of All Parties............................................ 16

ARTICLE III    REPRESENTATIONS AND WARRANTIES.............................................. 17
     3.01.  Representations and Warranties of the Company.................................. 17
     3.02.  Representations and Warranties of Newco and Newco Sub.......................... 24
     3.03.  Representations and Warranties of Sprint and Sprint L.P........................ 27

ARTICLE IV     COVENANTS RELATING TO CONDUCT OF BUSINESS AND OF THE COMPANY.................31
     4.01.  Conduct of Business............................................................ 31
     4.02.  Access to Property and Information............................................. 33
     4.03.  Public Disclosure.............................................................. 33
     4.04.  HSR Act Filings................................................................ 33
     4.05.  Information.................................................................... 34
     4.06.  Further Assurances............................................................. 34
     4.07.  No Solicitation................................................................ 34
     4.08.  Efforts Regarding Outstanding Warrants and Other Dilutable Securities.......... 35

ARTICLE V      ADDITIONAL AGREEMENTS....................................................... 36
     5.01.  Reasonable Efforts; Notification............................................... 36
     5.02.  Fees and Expenses.............................................................. 37
     5.03.  Stockholder Litigation......................................................... 37
     5.04.  Nasdaq Listing................................................................. 37
</TABLE>

                                       i
<PAGE>
 
<TABLE>
<S>                                                                                        <C>
     5.05.  Confidentiality................................................................37
     5.06.  No Acceleration of Options or Termination Payments.............................38
     5.07.  Amortization and Writeoffs of Goodwill and Assets..............................38
     5.08.  Maintaining SIP Subscribers at Newco...........................................38
     5.09.  Certification of SIP Subscribers...............................................38

ARTICLE VI     TERMINATION, AMENDMENT AND WAIVER...........................................39
     6.01.  Termination....................................................................39
     6.02.  Effect of Termination..........................................................40

ARTICLE VII    MISCELLANEOUS...............................................................40
     7.01.  Notices........................................................................41
     7.02.  Entire Agreement...............................................................42
     7.03.  Waiver, Amendment, Etc.........................................................42
     7.04.  Successors and Assigns.........................................................42
     7.05.  Governing Law..................................................................43
     7.06.  Severability...................................................................43
     7.07.  Counterparts...................................................................43
     7.08.  Headings.......................................................................43
     7.09.  No Third-Party Beneficiaries...................................................43
     7.10.  Interpretation.................................................................43
     7.11.  Inclusion of Information in Schedules..........................................44
     7.12.  Exclusive Jurisdiction and Consent to Service of Process.......................44
     7.13.  Amendment......................................................................44
     7.14.  Survival.......................................................................44
     7.15.  WAIVER OF JURY TRIAL...........................................................44

ARTICLE VIII   DEFINITIONS.................................................................45
     Definitions...........................................................................45
</TABLE>

                                       ii
<PAGE>
 
                                                                            PAGE
                                                                            ----

EXHIBITS:
     A - Form of Certificate of Designation
     B - Form of Master Assignment
     C - Network Agreement
     D - Marketing Agreement
     E - Credit Agreement
     F - Agreement and Plan of Merger
     G - Governance Agreement
     H - Stockholder's Agreement
     I - Registration Rights Agreement
     J - Agreement To Vote
     K - Agreement to Vote and Tender Stock

                                      iii
<PAGE>
 
                             INVESTMENT AGREEMENT

     THIS INVESTMENT AGREEMENT dated as of February 10, 1998 (this "Agreement"),
among Sprint Corporation, a Kansas corporation ("Sprint"), Sprint Communications
Company L.P., a Delaware limited partnership ("Sprint L.P."), EarthLink Network,
Inc., a Delaware corporation (the "Company"), Dolphin, Inc., a Delaware
corporation ("Newco"), and Dolphin Sub, Inc., a Delaware corporation and a
wholly-owned subsidiary of Newco ("Newco Sub").

     WHEREAS, the respective Boards of Directors of Sprint, the General Partner
of Sprint L.P., Newco and the Company have determined to enter into a strategic
relationship in the area of Internet access and related services and Sprint and
Sprint L.P. will make investments in Newco and the Company in connection with
the Merger of Newco Sub and the Company in order to enhance the capabilities for
growth and financial and strategic success;

     WHEREAS, Sprint proposes to make a tender offer (as it may be amended from
time to time as permitted under this Agreement, with the Company's consent if
required hereby, the "Offer") to purchase 1,250,000 shares of Common Stock for
an aggregate cash consideration of $56,250,000 and at a price per share of
Common Stock of $45 net to each seller in cash (such price, as may hereafter be
changed, the "Offer Price"), upon the terms and subject to the conditions set
forth in this Agreement; and the Board of Directors of the Company has approved
the Offer and the other transactions contemplated hereby and is recommending
that the Company's stockholders who wish to receive cash for their shares of
Common Stock accept the Offer;

     WHEREAS, immediately following the closing of the Offer, Sprint L.P.
proposes to purchase 4,102,941 shares of Series A Convertible Preferred Stock,
par value $.01 per share of Newco (the "Convertible Preferred Stock") in
exchange for (i) an aggregate cash consideration of $23,750,000, (ii) the
assignment to Newco of 100% of the Sprint Internet Passport Subscribers, and
(iii) entering into a network agreement whereby Newco and the Company will
utilize Sprint L.P.'s long-distance network under specified terms and
conditions;

     WHEREAS, Sprint, Sprint L.P., the Company and Newco will enter into a
marketing agreement whereby Newco and the Company will utilize the Sprint brand
under specified terms and conditions and will, inter alia, have the right to use
                                               ----- ----                       
Sprint L.P. distribution channels under specified terms and conditions and agree
to sell certain Sprint L.P.  products;

     WHEREAS, Sprint shall provide Newco and the Company, as co-borrowers, with
up to $25 million of Convertible Senior Debt financing on or after the Closing,
with such amount to increase to up to $100 million over time (the "Convertible
Debt Financing"), such indebtedness to be evidenced by one or more Convertible
Senior Promissory Note(s) (the "Convertible Notes") and to be subject to the
terms and conditions of the Credit Agreement;

     WHEREAS, the closing of the acquisition of the Convertible Preferred Stock
and the other transactions referred to above other than the Offer shall take
place concurrently with the merger of 

                                       1
<PAGE>
 
Newco Sub into the Company (the "Merger") and the conversion of each share of
the Company's outstanding Common Stock into one share of Newco common stock, par
value $.01 per share ("Newco Common Stock") pursuant to the Merger, in each case
upon the terms and subject to the conditions set forth in this Agreement and/or
the Ancillary Agreements (as defined below);

     WHEREAS, to induce Sprint and Sprint L.P. to enter into this Agreement and
the Ancillary Agreements, and to consummate the transactions contemplated
thereby, (i) the Voting Stockholders have executed and delivered to Sprint and
Sprint L.P. the Agreement to Vote Stock, (ii) the Tendering Stockholders have
executed and delivered to Sprint and Sprint L.P. the Agreement to Vote and
Tender Stock, and (iii) certain stockholders have entered into a Stockholders
Agreement with Sprint and Sprint L.P.; and

     WHEREAS, Sprint, Sprint L.P., the Company, Newco and Newco Sub desire to
make certain representations, warranties, covenants and agreements and also to
prescribe various conditions in connection with the transactions contemplated
hereby;

     NOW, THEREFORE, in consideration of the representations, warranties,
covenants and agreements contained in this Agreement and in the Ancillary
Agreements, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Parties hereby agree as
follows:


                                   ARTICLE I

                            THE OFFER AND FINANCING

     SECTION 1.01   The Offer.  (a) Subject to the provisions of this Agreement,
as promptly as practicable, but in no event later than five business days after
the date of this Agreement, Sprint shall commence the Offer. The obligation of
Sprint to commence the Offer and accept for payment, and pay for, any shares of
Common Stock tendered pursuant to the Offer shall be subject to the conditions
set forth in Sections 2.01, 2.02 and 2.03 (or written waivers as set forth
therein) and to the terms and conditions of this Agreement. Sprint may not
consummate the Offer prior to March 20, 1998, modify or amend the terms of the
Offer, terminate the Offer other than in accordance with the terms hereof or
extend the Offer beyond June 15, 1998 (the earlier of June 15, 1998 or the date
of acceptance for payment of the shares of Common Stock tendered pursuant to the
Offer is hereinafter referred to as the "Expiration Date") in any such case
without the prior written consent of the Company (such consent to be authorized
by the Board of Directors of the Company). Subject to the terms and conditions
thereof, the Offer shall expire at midnight New York City time on the date that
is 20 business days from the date the Offer is first published, sent or given to
holders of Common Stock; provided, however, that without the Company's consent,
                         --------  -------
Sprint may (i) extend the Offer, if at the scheduled expiration date of the
Offer any of the conditions to Sprint's obligation to accept for payment, and
pay for, shares of Common Stock shall not have been satisfied or waived, until
such time as such conditions are satisfied or waived, (ii) extend the Offer for
any period required by any rule, regulation, interpretation or position of the
SEC applicable to the Offer and (iii) extend 

                                       2
<PAGE>
 
the Offer for any reason on one occasion for an aggregate period of not more
than 5 business days beyond the latest expiration date that would otherwise be
permitted under clause (i) or (ii) of this sentence but in no event may the
Offer extend beyond the Expiration Date.

     (b)  On the date of commencement of the Offer, Sprint shall file with the
SEC a Tender Offer Statement on Schedule 14D-1 with respect to the Offer, which
shall contain an offer to purchase and a related letter of transmittal and
summary advertisement (such Schedule 14D-1 and the documents included therein
pursuant to which the Offer will be made, together with any supplements or
amendments thereto, the "Offer Documents").  Sprint agrees that the Offer
Documents shall comply as to form in all material respects with the Exchange Act
and that the Offer Documents on the date first published, sent or given to the
Company's stockholders shall not 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, except that no representation is made by Sprint
or Sprint L.P. with respect to information supplied by the Company, Newco or
Newco Sub specifically for inclusion in the Offer Documents.  Each of the
Parties agrees promptly to correct any information provided by it for use in the
Offer Documents if and to the extent that such information shall have become
false or misleading in any material respect, and Sprint further agrees to take
all steps necessary to amend or supplement the Offer Documents and to cause the
Offer Documents as so amended or supplemented to be filed with the SEC and to be
disseminated to the Company's stockholders, in each case as and to the extent
required by applicable Federal securities laws.  The Company and its counsel
shall be given a reasonable opportunity to review the Offer Documents and all
amendments and supplements thereto prior to their filing with the SEC or
dissemination to stockholders of the Company.  Sprint agrees to provide the
Company and its counsel any comments that Sprint or its counsel may receive from
the SEC or its staff with respect to the Offer Documents promptly after the
receipt of such comments.

     SECTION 1.02    Company Actions.  (a)  The Company hereby approves of and
consents to the Offer and the other transactions contemplated hereby and by the
Ancillary Agreements and the Company, Newco and Newco Sub represent and warrant
that the Boards of Directors of the Company, Newco and Newco Sub at meetings
duly called and held, duly and unanimously adopted resolutions, as appropriate,
approving this Agreement, the Ancillary Agreements, the Offer and the issuance
of the Convertible Preferred Stock to Sprint L.P. and the Convertible Notes to
Sprint as contemplated hereby, determining that this Agreement and the
transactions contemplated hereby and by the Ancillary Agreements, including the
Offer and the acquisition of the Convertible Preferred Stock, are fair to, and
in the best interests of, the Company's stockholders and recommending that those
stockholders who wish to receive cash for their shares of Common Stock, accept
the Offer and tender their shares pursuant to the Offer.  The Company represents
that its Board of Directors has received the opinion of Deutsche Morgan Grenfell
Inc. that the transactions contemplated by this Agreement, when taken together,
are fair, from a financial point of view, to the Company's stockholders and that
a complete and correct signed copy of such opinion has been delivered by the
Company to Sprint.

                                       3
<PAGE>
 
     (b)  On the date the Offer Documents are filed with the SEC, the Company
shall file with the SEC a Solicitation/Recommendation Statement on Schedule 14D-
9 with respect to the Offer (such Schedule 14D-9, as amended from time to time,
the "Schedule 14D-9") containing the recommendation described in paragraph (a)
of this Section 1.02 and shall mail the Schedule 14D-9 to the stockholders of
the Company.  The Company agrees that the Schedule 14D-9 shall comply as to form
in all material respects with the requirements of the Exchange Act and, on the
date filed with the SEC and on the date first published, sent or given to the
Company's stockholders, shall not 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, except that no representation is
made by the Company with respect to information supplied by Sprint or Sprint
L.P. specifically for inclusion in the Schedule 14D-9. Each of the Company,
Newco and Newco Sub agrees promptly to correct any information provided by it
for use in the Schedule 14D-9 if and to the extent that such information shall
have become false or misleading in any material respect, and the Company further
agrees to take all steps necessary to amend or supplement the Schedule 14D-9 and
to cause the Schedule 14D-9 as so amended or supplemented to be filed with the
SEC and disseminated to the Company's stockholders, in each case as and to the
extent required by applicable Federal securities laws.  Sprint and its counsel
shall be given a reasonable opportunity to review the Schedule 14D-9 and all
amendments and supplements thereto prior to their filing with the SEC or
dissemination to stockholders of the Company.  The Company agrees to provide
Sprint and its counsel in writing with any comments the Company or its counsel
may receive from the SEC or its staff with respect to the Schedule 14D-9
promptly after the receipt of such comments.

     (c)  In connection with the Offer, the Company shall cause its transfer
agent to furnish Sprint promptly with mailing labels containing the names and
addresses of the record holders of Common Stock as of a recent date and of those
persons becoming record holders subsequent to such date, together with copies of
all lists of stockholders, security position listings and computer files and all
other information in the Company's possession or control regarding the
beneficial owners of Common Stock, and shall furnish to Sprint such information
and assistance (including updated lists of stockholders, security position
listings and computer files) as Sprint may reasonably request to facilitate
communication of the Offer to the Company's stockholders.  Subject to the
requirements of applicable law, and except for such steps as are necessary to
disseminate the Offer Documents, Sprint and its agents shall hold in confidence
the information contained in any such labels, listings and files, will use such
information only in connection with the Offer and the other transactions
contemplated hereby and, if this Agreement shall be terminated, will deliver,
and will use their best efforts to cause their agents to deliver, to the Company
all copies of such information then in their possession or control.

     SECTION 1.03    Issuance of Convertible Preferred Stock.  Newco agrees to
issue to Sprint L.P., and Sprint L.P. agrees to acquire from Newco, 4,102,941
shares of Convertible Preferred Stock having the voting powers, preferences and
other rights set forth in the form of Certificate of Designation, Preferences
and Rights attached hereto as Exhibit A ("Certificate of Designation") and which
is to be filed with the Delaware Secretary of State on or prior to the Closing
Date, for the "Preferred Stock Consideration," which shall be delivered at the
Closing for the duly authorized and 

                                       4
<PAGE>
 
executed certificates evidencing such shares. The Preferred Stock Consideration
shall consist of the following:

          (i)    cash in the amount of $23,750,000, which payment shall be made
     by wire transfer of immediately available funds pursuant to the wire
     transfer instructions to be provided to Sprint L.P. by a duly authorized
     officer of Newco at least 72 hours prior to the Closing;

          (ii)   all of the right, title and interest of Sprint L.P. in and to
     all agreements with SIP Subscribers and all rights to provide Internet
     access services to the SIP Subscribers after the Closing Date, as evidenced
     by the Master Assignment and Assumption Agreement in the form attached
     hereto as Exhibit B (the "Master Assignment"), which (A) shall have a
     Schedule A attached thereto showing the number and identity of SIP
     Subscribers as of a date no earlier than 10 days prior to the Closing Date,
     (B) shall include the obligations to be assumed by Newco at the Closing to
     continue the performance of all of such agreements after the Closing Date,
     and (C) shall be executed and delivered by the Parties thereto on the
     Closing Date; and

          (iii)  the right to utilize a minimum and maximum number of ports on
     Sprint L.P.'s long-distance network specified, along with the pricing and
     other terms and conditions set forth, in the Network Agreement attached
     hereto as Exhibit C ("Network Agreement"), which shall be executed and
     delivered by the Parties thereto on the date hereof, but which shall not
     become effective until the Closing and then only if all of the applicable
     conditions to Closing have been satisfied or waived.

     SECTION 1.04    Marketing Agreement.  The Marketing Agreement attached
hereto as Exhibit D shall be executed and delivered by the Parties thereto on
the date hereof, and pursuant to which (A) Newco and the Company shall have the
right to utilize certain distribution channels of Sprint L.P., and the Parties
shall provide certain cooperation and support to each other in specified
marketing matters, and (B) Newco and the Company shall be granted a license
requiring the use of the Sprint brand in conjunction with the Company's brand,
in each case upon the terms and subject to conditions set forth in the Marketing
Agreement, but which Agreement shall not become effective until the Closing and
then only if all of the applicable conditions to Closing have been satisfied or
waived.

     SECTION 1.05    Convertible Debt Financing. Sprint agrees to make advances
of funds to Newco and the Company, as co-borrowers, in the amounts and at the
times specified in, and subject to the terms and conditions set forth in, the
Credit Agreement attached hereto as Exhibit E (the "Credit Agreement"), (A)
which shall be executed and delivered by the Parties thereto on the date hereof,
but which shall not become effective until the Closing and then only if all of
the applicable conditions to the Closing have been satisfied or waived, and (B)
advances thereunder shall be evidenced by one or more Convertible Notes which
shall be convertible into Newco Common Stock, a form of which Convertible Note
is attached to the Credit Agreement.

                                       5
<PAGE>
 
     SECTION 1.06    Merger of Newco Sub into the Company and Conversion of
Company Stock into Newco Stock. (a) The Company, Newco and Newco Sub shall duly
execute and deliver on the date hereof the Agreement and Plan of Merger among
them attached hereto as Exhibit F, but which shall not become effective until
the Closing, and pursuant to which, inter alia, at the Closing, (i) Newco Sub
                                    ----- ----
shall be merged with and into the Company and the Company shall be the surviving
corporation (the "Surviving Corporation"), (ii) the certificate of incorporation
and bylaws of Newco Sub shall be the certificate of incorporation and bylaws of
the Surviving Corporation, (iii) except as disclosed in Schedule 1.06 hereto;
the certificate of incorporation and bylaws of Newco shall be identical to the
certificate of incorporation and bylaws of the Company, (iv) the directors and
officers of the Company shall be the directors and officers of Newco until their
successors have been duly elected or appointed and qualified or until their
earlier death, resignation or removal in accordance with Newco's certificate of
incorporation and bylaws, except that the two directors elected by the holders
of the Convertible Preferred Stock shall be elected immediately following the
Closing and (v) each outstanding share of Common Stock of the Company shall be
converted into one share of Newco Common Stock.

     (b)  Subject to the provisions of this Agreement, as promptly as
practicable, the Company, Newco and Newco Sub shall prepare and file with the
SEC a proxy statement relating to a special meeting of the Company's
stockholders (the "Special Meeting") to be held in connection with the Merger
(the "Proxy Statement") that will serve as the prospectus included as Part I of
a registration statement on Form S-4 (the "S-4") to be filed by Newco with the
SEC to register the Newco Common Stock to be issued in the Merger by Newco.  The
Proxy Statement and S-4 shall also seek approval by the Company's stockholders
of (i) the issuance and sale of the Convertible Preferred Stock, the Convertible
Notes, and the Newco Common Stock issuable upon conversion of the Convertible
Preferred Stock and/or the Convertible Notes, (ii) the other transactions
contemplated by this Agreement and the Ancillary Agreements, and (iii) any
related matters that must be approved by the holders of Common Stock or Newco
Common Stock in order for the transactions contemplated by the Investment
Agreement or any Ancillary Agreement to be consummated (the matters referred to
in clauses (i), (ii) and (iii) together with approval of the Merger, the
"Company Stockholder Vote Matters").  Each of the Company, Newco and Newco Sub
shall use all reasonable efforts to (i) have the S-4 declared effective under
the Securities Act as promptly as practicable after such filing, and (ii) to
cause the Proxy Statement to be mailed to all stockholders of the Company at the
earliest practicable date.  The Company, Newco and Newco Sub agree that the S-4
and the Proxy Statement shall comply as to form in all material respects with
the Securities Act and the Exchange Act and shall not 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, except that no
representation is made by the Company, Newco or Newco Sub with respect to any
information supplied by Sprint specifically for inclusion in the S-4 and the
Proxy Statement.  Each of the Parties agrees promptly to correct any information
provided by it for use in the S-4 and the Proxy Statement if and to the extent
that such information shall have become false or misleading in any material
respect, and the Company, Newco and Newco Sub further agree to take all steps
necessary to amend or supplement the S-4 and the Proxy Statement and to cause
the S-4 and the Proxy Statement as so amended or supplemented to be filed with
the SEC and to cause the Proxy Statement to be disseminated to the Company's

                                       6
<PAGE>
 
stockholders, in each case as and to the extent required by applicable Federal
securities laws.  Sprint and its counsel shall be given a reasonable opportunity
to review the S-4 and the Proxy Statement and all amendments and supplements
thereto prior to their filing with the SEC or dissemination to stockholders of
the Company.  The Company, Newco and Newco Sub agree to provide Sprint and its
counsel any comments that the Company, Newco and Newco Sub or its counsel may
receive from the SEC or its staff with respect to the S-4 and the Proxy
Statement promptly after the receipt of such comments.

     (c)  The Company shall call the Special Meeting to be held as promptly as
practicable after the date hereof for the purpose of voting upon the Company
Stockholder Vote Matters.  Subject to Section 4.07(a), the Company will, through
its Board of Directors, recommend that its stockholders vote their shares in
favor of the approval of the Company Stockholder Vote Matters and shall use its
reasonable best efforts to obtain approval and adoption by the Company's
stockholders of the Company Stockholder Vote Matters.  The Company and Sprint
shall coordinate and cooperate with respect to the timing of the Special Meeting
and shall use all reasonable efforts to hold such meeting as soon as practicable
after the date hereof.  Newco shall (i) cause Newco Sub promptly to submit this
Agreement and the transactions contemplated hereby for approval and adoption by
Newco as its sole stockholder by written consent or stockholder vote, (ii)
authorize and cause an officer of Newco to vote Newco's shares of Newco Sub for
adoption and approval of, or act by written consent to adopt and approve, this
Agreement and the Ancillary Agreements and the transactions contemplated hereby
and thereby, and (iii) take all additional actions as the sole stockholder of
Newco Sub necessary to adopt and approve this Agreement and the Ancillary
Agreements and the transactions contemplated hereby and thereby.  Newco will, on
or prior to the Closing Date, execute and deliver to Sprint and the Company a
written consent by the sole stockholder of Newco (i) approving this Agreement,
the Ancillary Agreements and the transactions contemplated hereby and thereby,
and (ii) authorizing the taking of all additional actions as the sole
stockholder of Newco necessary to adopt and approve this Agreement and the
Ancillary Agreements and the transactions contemplated hereby and thereby.

     SECTION 1.07    Governance Agreement and Stockholders Agreement.

          (a)  Sprint, Sprint L.P., Newco and the Company shall execute and
     deliver on the date hereof the Governance Agreement attached hereto as
     Exhibit G to establish therein certain terms and conditions concerning the
     corporate governance of Newco, the acquisition of Newco's equity securities
     by Sprint and its Affiliates, and the rights of Sprint to make offers to
     purchase all of the outstanding securities not owned by Sprint and its
     Affiliates and the rights of the Board of Directors of Newco to receive
     offers to effect business combinations, which agreement shall not become
     effective until the Closing.

          (b)  Sprint, Sprint L.P., Newco, the Company and the stockholders of
     the Company identified on a schedule to the following agreement shall
     execute and deliver on the date hereof a Stockholders' Agreement attached
     hereto as Exhibit H to effectuate the intent and provisions of the
     Governance Agreement and to provide for certain rights and obligations 

                                       7
<PAGE>
 
     of such parties with respect to the voting and disposition of equity
     securities of Newco, which agreement shall not become effective until the
     Closing.

     SECTION 1.08    Registration Rights Agreement. Sprint, Sprint L.P. and
Newco shall execute and deliver on the date hereof the Registration Rights
Agreement attached hereto as Exhibit I with respect to the rights of Sprint and
its Affiliates in connection with public offerings and sales of Newco Common
Stock acquired in the Merger, through conversion of the Convertible Preferred
Stock or the Convertible Notes, pursuant to the Governance Agreement or
otherwise, which agreement shall not become effective until the Closing.

     SECTION 1.09    Closing. (a) Closing Date and Location. The closing of the
transactions contemplated by Sections 1.03., 1.04., 1.05., 1.06., 1.07., and
1.08. (the "Closing") shall be held at the offices of Stinson, Mag & Fizzell,
P.C., 1201 Walnut, Suite 2900, Kansas City, Missouri 64106, immediately
following, and subject only to, the acceptance for payment of shares of Common
Stock pursuant to the Offer, or at such other date, time or place as the parties
may mutually agree. The date on which the Closing shall occur is hereinafter
referred to as the "Closing Date."

     (b)  Deliveries by Newco and Newco Sub. At the Closing, Newco and Newco Sub
shall take the following actions:

          (i)    deliver to Sprint L.P. duly executed certificates evidencing
     4,102,941 shares of Convertible Preferred Stock in exchange for the
     Preferred Stock Consideration;

          (ii)   deliver to Sprint L.P. a duly executed and delivered instrument
     acknowledging receipt of payment of the cash portion of the Preferred Stock
     Consideration;

          (iii)  deliver to Sprint and Sprint L.P. each of the Ancillary
     Agreements to which either of them is a party, which shall have been duly
     executed and delivered by them;

          (iv)   deliver to Sprint and Sprint L.P. a certificate on behalf of
     Newco and Newco Sub signed by a duly authorized executive officer, dated as
     of the Closing Date, certifying the fulfillment of the conditions set forth
     in Sections 2.02(d) and (e);

          (v)    deliver to Sprint and Sprint L.P. the legal opinion of Hunton &
     Williams, counsel to the Company, Newco and Newco Sub, dated as of the
     Closing Date, in form and substance reasonably satisfactory to Sprint and
     Sprint L.P.;

          (vi)   deliver to Sprint and Sprint L.P. a Certificate of the
     Secretary of Newco (A) as to true and complete copies of the certificate of
     incorporation, bylaws and resolutions of the Board of Directors authorizing
     the execution, delivery and performance of this Agreement and each of the
     Ancillary Agreements to which it is a party and the transactions
     contemplated hereby and thereby, (B) certifying that the execution,
     delivery and performance of this Agreement and each of the Ancillary
     Agreements and the transactions contemplated hereby and thereby were duly
     and validly approved by the sole stockholder of Newco, and (C) as to

                                       8
<PAGE>
 
     incumbency of the Newco officers executing the Agreement and each of the
     Ancillary Agreements to which it is a party;

          (vii)   deliver to Sprint and Sprint L.P. the certificate of
     incorporation of Newco and all amendments to date, certified by the
     Delaware Secretary of State, as of a date not earlier than three (3)
     business days prior to the Closing Date;

          (viii)  deliver to Sprint and Sprint L.P. a Long Form Certificate of
     Good Standing from the Delaware Secretary of State certifying that Newco is
     in good standing, as of a date not earlier than three (3) business days
     prior to the Closing Date;

          (ix)    deliver to Sprint and Sprint L.P. the SEC Order of
     Effectiveness with respect to the S-4 if then in the possession of the
     Company or Newco;

          (x)     deliver to Sprint and Sprint L.P. a Certificate of the
     Secretary of Newco Sub (A) as to true and complete copies of the
     certificate of incorporation, bylaws and resolutions of the Board of
     Directors authorizing the execution, delivery and performance of this
     Agreement and each of the Ancillary Agreements to which it is a party and
     the transactions contemplated hereby and thereby, (B) certifying that the
     execution, delivery and performance of this Agreement and each of the
     Ancillary Agreements to which it is a party and the transactions
     contemplated hereby and thereby were duly and validly approved by Newco as
     the sole stockholder of Newco Sub, and (C) as to incumbency of the Newco
     Sub officers executing this Agreement and each of the Ancillary Agreements
     to which it is a party;

          (xi)    deliver to Sprint and Sprint L.P. the certificate of
     incorporation of Newco Sub and all amendments to date, certified by the
     Delaware Secretary of State, as of a date not earlier than three (3)
     business days prior to the Closing Date; and

          (xii)   deliver to Sprint and Sprint L.P. a Long Form Certificate of
     Good Standing from the Delaware Secretary of State certifying that Newco
     Sub is in good standing, as of a date not later than three (3) business
     days prior to the Closing Date.

      (c) Deliveries by the Company.  At the Closing, the Company shall deliver
to Sprint and Sprint L.P. the following:

          (i)    each of the Ancillary Agreements to which the Company is a
     party, which shall have been duly executed and delivered by it;

          (ii)   a certificate on behalf of the Company signed by a duly
     authorized executive officer, dated as of the Closing Date, certifying the
     fulfillment of the conditions set forth in Sections 2.02(d) and (e);

                                       9
<PAGE>
 
          (iii)  the legal opinion of Hunton & Williams, counsel to the Company,
     Newco and Newco Sub dated as of the Closing Date, in form and substance
     reasonably satisfactory to Sprint and Sprint L.P.;

          (iv)   a Certificate of the Secretary of the Company (A) as to true
     and complete copies of the certificate of incorporation, bylaws and
     resolutions of the Board of Directors authorizing the execution, delivery
     and performance of this Agreement and each of the Ancillary Agreements to
     which it is a party and the transactions contemplated hereby and thereby,
     (B) certifying that the execution, delivery and performance of this
     Agreement and each of the Ancillary Agreements and the transactions
     contemplated hereby and thereby were duly and validly approved by the
     stockholders of the Company, and (C) as to incumbency of the Company
     officers executing the Agreement and each of the Ancillary Agreements to
     which it is a party;

          (v)    the certificate of incorporation of the Company and all
     amendments to date, certified by the Delaware Secretary of State, as of a
     date not later than three (3) business days prior to the Closing Date;

          (vi)   a Long Form Certificate of Good Standing from the Delaware
     Secretary of State certifying that the Company is in good standing, as of a
     date not later than three (3) business days prior to the Closing Date;

          (vii)  the Certificate of Inspector of Election in connection with the
     Special Meeting.

      (d) Deliveries by Sprint.  At the Closing, Sprint shall deliver to the
Company, Newco and Newco Sub the following:

          (i)    each of the Ancillary Agreements to which Sprint is a party,
     which shall have been duly executed and delivered by it;

          (ii)   a certificate on behalf of Sprint signed by a duly authorized
     executive officer, dated as of the Closing Date, certifying the fulfillment
     of the conditions set forth in Sections 2.03(b), (c) and (e);

          (iii)  the legal opinion of Stinson, Mag & Fizzell, P.C., counsel to
     Sprint and Sprint L.P., dated as of the Closing Date, in form and substance
     reasonably satisfactory to Newco and the Company.

          (iv)   a Certificate of Secretary of Sprint (A) as to true and
     complete copies of the articles of incorporation, bylaws and resolutions of
     the Board of Directors authorizing the execution, delivery and performance
     of this Agreement and each of the Ancillary Agreements to which it is a
     party and the transactions contemplated hereby and thereby, and (B) as to

                                       10
<PAGE>
 
     incumbency of the Sprint officers executing this Agreement and each of the
     Ancillary Agreements to which it is a party; and

          (v)    a Long Form Certificate of Good Standing from the Kansas
     Secretary of State certifying that Sprint is in good standing, as of a date
     not later than three (3) business days prior to the Closing Date.

      (e) Deliveries by Sprint L.P.  At the Closing, Sprint L.P. shall deliver
to the Company, Newco and Newco Sub the following:

          (i)    the cash portion of the Preferred Stock Consideration to Newco
     by wire transfer of immediately available funds pursuant to wire transfer
     instructions from a duly authorized officer of Newco;

          (ii)   each of the Ancillary Agreements to which Sprint L.P. is a
     party, which shall have been duly executed and delivered by it;

          (iii)  a certificate on behalf of Sprint L.P. signed by a duly
     authorized executive officer, dated as of the Closing Date, certifying the
     fulfillment of the conditions set forth in Sections 2.03(b) and (c);

          (iv)   the legal opinion of Stinson, Mag & Fizzell, P.C., counsel to
     Sprint and Sprint L.P., dated as of the Closing Date, in form and substance
     reasonably satisfactory to Newco and the Company;

          (v)    a Certificate of Secretary of Sprint L.P. (A) as to true and
     complete copies of the limited partnership agreement of Sprint L.P. and
     resolutions of the Board of Directors of the General Partner of Sprint L.P.
     authorizing the execution, delivery and performance of this Agreement and
     each of the Ancillary Agreements to which it is a party and the
     transactions contemplated hereby and thereby, and (B) as to incumbency of
     the Sprint L.P. officers executing this Agreement and each of the Ancillary
     Agreements to which it is a party; and

          (vi)   a Long Form Certificate of Good Standing from the Delaware
     Secretary of State certifying that Sprint L.P. is in good standing, as of a
     date not later than three (3) business days prior to the Closing Date.

                                       11
<PAGE>
 
                                  ARTICLE II

                        CONDITIONS TO OFFER AND CLOSING

     SECTION 2.01   Mutual Conditions to Offer. Sprint shall not, and shall have
no obligation to, accept for payment or, subject to any applicable rules and
regulations of the SEC, including Rule 14e-1(c) under the Exchange Act (relating
to Sprint's obligation to pay for or return tendered shares of Common Stock
after the termination or withdrawal of the Offer), pay for any shares of Common
Stock tendered pursuant to the Offer unless the following conditions are
satisfied on or prior to the Offer Acceptance Time (or waived in a writing
executed by Sprint, Sprint L.P., Newco, Newco Sub and the Company).

          (a)  Minimum Tender Condition. At least 1,250,000 shares of Common
     Stock shall have been validly tendered and not withdrawn prior to the
     expiration of the Offer (the "Minimum Tender Condition").

          (b)  Waiting Periods.  The filing and waiting period requirements of
     the HSR Act relating to the Offer, the Preferred Stock Consideration and
     the Merger shall have been complied with and there shall be no action taken
     or instituted by the Department of Justice, the Federal Trade Commission or
     by any other Governmental Entity to delay or otherwise enjoin the
     transactions contemplated by this Agreement and by the Ancillary Agreements
     and the waiting period applicable under the HSR Act shall have expired or
     received early termination.

          (c)  Other Approvals. In addition to the filing and expiration of the
     waiting period contemplated by Section 2.01(b), all authorizations,
     consents, orders or approvals of, or declarations or filings with, or
     expirations of waiting periods imposed by, any Governmental Entity, the
     failure to obtain which would have a Material Adverse Effect on Sprint,
     Sprint L.P. and their respective Subsidiaries, the Company or Newco and
     Newco Sub, in each case, taken as a whole, shall have been filed, occurred
     or been obtained.

          (d)  Form S-4. The S-4 shall have become effective under the
     Securities Act and shall not be the subject of any stop order or
     proceedings seeking a stop order.

          (e)  Actions, Suits or Proceedings. There shall not be Threatened or
     pending by any Governmental Entity any Action which has a reasonable
     likelihood of success, and there shall not be pending by any other Person
     any Action which has a substantial likelihood of success, (i) seeking to
     restrain or prohibit the acquisition by Sprint of any shares of Common
     Stock or any Convertible Notes or the acquisition by Sprint L.P. of any
     shares of Convertible Preferred Stock, the making or consummation of the
     Offer or the performance by any of the Parties hereto of any of the other
     transactions contemplated by this Agreement or any of the Ancillary
     Agreements, or seeking to obtain from the Company, Newco, Sprint or Sprint
     L.P. any damages that are material in relation to Sprint, Newco or the
     Company and their respective subsidiaries taken as a whole, (ii) seeking to
     impose limitations on the ability of 

                                       12
<PAGE>
 
     Sprint or Sprint L.P. to acquire or hold, or exercise full rights of
     ownership of, any shares of Common Stock accepted for payment by Sprint
     pursuant to the Offer or any shares of Convertible Preferred Stock, any
     Convertible Notes or any Common Stock received upon conversion of either
     thereof, including, without limitation, the right to vote such Common
     Stock, Newco Common Stock and Convertible Preferred Stock on all matters
     properly presented to the stockholders of the Company or Newco, as the case
     may be, (iii) seeking to prohibit any Party from exercising any of its
     material rights under this Agreement or any Ancillary Agreement; or (iv)
     seeking to prohibit or limit the ownership or operation by any Party or its
     respective Subsidiaries of a material portion of the business or assets of
     such Party on a consolidated basis, or to compel any Party to dispose of or
     hold separate any material portion of the business or assets of such Party
     on a consolidated basis, as a result of the Offer or any of the other
     transactions contemplated by this Agreement or the Ancillary Agreements.

          (f)  No Injunctions or Restraints. No statute, rule, regulation,
     executive order, decree, temporary restraining order, preliminary or
     permanent injunction or other order enacted, entered, promulgated, enforced
     or issued by any Governmental Entity or other legal restraint or
     prohibition (x) preventing the consummation of the Merger or any of the
     other transactions contemplated hereby or by the Ancillary Agreements that
     are to occur by the Closing shall be in effect or, (y) applicable to the
     Offer or the issuance of shares of Convertible Preferred Stock, any
     Convertible Notes or any Newco Common Stock received upon conversion of
     either thereof having any of the consequences described in clauses (i)
     through (iv) of Section 2.01(e) shall be in effect; provided, however, that
                                                         --------  -------
     prior to invoking this condition, each Party shall use all reasonable
     efforts to have any such decree, ruling, injunction or order vacated,
     except as otherwise contemplated by this Agreement.

          (g)  Stockholder Approval. The holders of Common Stock of the Company
     shall have approved the Company Stockholder Vote Matters.

          (h)  Termination of Agreement. This Agreement shall not have
     terminated in accordance with its terms prior to the Expiration Date.

     SECTION 2.02  Conditions to Offer for Benefit of Sprint and Sprint L.P.
Sprint shall have no obligation to accept for payment or, subject to any
applicable rules and regulations of the SEC, including Rule 14e-1(c) under the
Exchange Act (relating to Sprint's obligation to pay for or return tendered
shares of Common Stock after the termination or withdrawal of the Offer), pay
for any shares of Common Stock tendered pursuant to the Offer unless the
following conditions are satisfied on or prior to the Offer Acceptance Time (or
waived in a writing executed by Sprint and Sprint L.P.).

          (a)  Approval of the Board of Directors. (i) The Board of Directors of
     the Company or Newco shall not have withdrawn or modified in a manner
     adverse to Sprint or Sprint L.P. its approval of the Offer or the other
     transactions contemplated by this Agreement or the Ancillary Agreements, or
     approved any Acquisition Proposal or approved the solicitation of
     additional Acquisition Proposals, (ii) the Company shall not have entered
     into

                                       13
<PAGE>
 
     any agreement with respect to any Acquisition Proposal, or (iii) the Board
     of Directors of the Company or Newco or any committee thereof shall not
     have resolved to take any of the foregoing actions referred to in (i) or
     (ii) above.

          (b)  Execution, Delivery, Effectiveness and Satisfaction of Ancillary
     Agreements. Each of the Company, Newco and Newco Sub shall have executed
     and delivered to Sprint and Sprint L.P., as the case may be, each Ancillary
     Agreement to which it is a party.  Each Ancillary Agreement shall be in
     full force and effect and all of the terms and conditions of each such
     Ancillary Agreement shall be satisfied in all material respects.

          (c)  Stockholder Agreements. (i) Each of (A) the stockholders named on
     Schedule A of the Stockholders Agreement, and (B) each of Garry Betty,
     Brinton Young, Robert Kavner and Chip Lacy, shall have executed, and
     delivered to Sprint the Stockholders Agreement in the form attached hereto
     as Exhibit H, including the Irrevocable Proxies related thereto (the
     "Stockholders Agreement"), (ii) each of the Voting Stockholders shall have
     executed and delivered to Sprint the Agreement To Vote Stock (the
     "Agreement to Vote"), in the form attached hereto as Exhibit J, and (iii)
     each of the Tendering Stockholders shall have executed and delivered to
     Sprint the Agreement to Vote and Tender Stock (the "Agreement to Vote and
     Tender"), in the form attached hereto as Exhibit K. The Stockholders
     Agreement, each Agreement to Vote and each Agreement to Vote and Tender, to
     the extent necessary to approve the Company Stockholder Vote Matters, shall
     be in full force and effect and all of the terms and conditions of such
     agreements shall be satisfied in all material respects.

          (d)  Representations and Warranties. The representations and
     warranties of the Company, Newco and Newco Sub shall be true and correct
     (i) as of the date referred to in any representation or warranty that
     addresses a matter as of a particular date, or (ii) as to all other
     representations and warranties, as of the date of this Agreement and as of
     the Offer Acceptance Time; unless, in either the case of clause (i) or
     (ii), the inaccuracies under such representations and warranties, would
     not, individually or in the aggregate, (x) have a Material Adverse Effect
     on the Company or Newco, (y) materially impair the ability of the Company,
     Newco and Newco Sub to enter into and perform this Agreement or any
     Ancillary Agreement to which any of them is a Party and their respective
     obligations thereunder, or (z) materially reduce Sprint's expected
     ownership interest in Newco by virtue of material inaccuracies in the
     representations and warranties set forth in Section 3.01(c) hereof, in each
     case without giving effect to any supplement to any schedule to this
     Agreement or to any Ancillary Agreement (provided, however, that any
                                              --------  -------
     supplement must be objected to before the earlier of the Offer Acceptance
     Time or 10 Business Days from the date of delivery thereof). Sprint and
     Sprint L.P. shall also have each received a separate certificate to such
     effect dated the Offer Acceptance Date and executed by the chief executive
     officer and chief financial officer of each of the Company, Newco and Newco
     Sub, in each such case without giving effect to any supplement to any
     Schedule to this Agreement or to any Ancillary Agreement.

                                       14
<PAGE>
 
          (e)  Performance of Obligations and Covenants of the Company, Newco
     and Newco Sub. Each of the Company, Newco and Newco Sub shall have
     performed in all material respects all of the respective obligations and
     covenants required to be performed or complied with by them under this
     Agreement and each of the Ancillary Agreements at or prior to the time of
     the Closing.

          (f)  Legal Opinions. Sprint shall have received the legal opinion of
     Hunton & Williams, dated as of the Closing Date, counsel to Newco, Newco
     Sub, and the Company in form and substance reasonably satisfactory to
     Sprint and Sprint L.P.

          (g)  Amendments and Modifications of Warrants and other Dilutable
     Securities. There shall not be any warrants to purchase Common Stock or
     other Dilutable Securities of the Company outstanding on the Closing Date
     which could be exercised on the Closing Date (assuming the expiration of
     any applicable vesting periods or the satisfaction of any other conditions
     to conversion, exchange, exercise or issuance) into a number of shares of
     Common Stock which, in the aggregate, would constitute more than 8% of the
     shares of Common Stock outstanding immediately prior to the Closing, which,
     upon or after the Merger will be convertible into or exchangeable for or
     give the right to acquire Common Stock or other voting securities of the
     Company, and the Company shall have provided copies of all amendments or
     other modifications of any Warrants and other Dilutable Securities obtained
     by the Company pursuant to Section 4.08.

     SECTION 2.03   Conditions to Offer for Benefit of the Company, Newco, and
Newco Sub.  Sprint shall not accept for payment or, subject to any applicable
rules and regulations of the SEC, including Rule 14e-1(c) under the Exchange Act
(relating to Sprint's obligation to pay for or return tendered shares of Common
Stock after the termination or withdrawal of the Offer), pay for any shares of
Common Stock tendered pursuant to the Offer unless the following conditions are
satisfied on or prior to the Offer Acceptance Time (or waived in a writing
executed by Newco, Newco Sub and the Company).

          (a)  Approval, Execution, Delivery, Effectiveness and Satisfaction of
     Ancillary Agreements.  (i) The Board of Directors of Sprint, and the Board
     of Directors of the General Partners of Sprint L.P. shall not have
     withdrawn or modified in a manner adverse to Newco or the Company their
     approval of the Offer or the other transactions contemplated by this
     Agreement or the Ancillary Agreements, or approved any Acquisition Proposal
     or approved the solicitation of additional Acquisition Proposals, (ii)
     Sprint shall not have entered into any agreement with respect  to any
     Acquisition Proposal, or (iii) the Board of Directors of Sprint, or the
     Board of Directors of the General Partner of Sprint L.P., or any committee
     thereof shall not have resolved to take any of the foregoing actions
     referred to in (i) or (ii) above. Sprint and Sprint L.P. shall have
     executed and delivered to the Company, Newco and Newco Sub, as the case may
     be, and performed each Ancillary Agreement to which it is a party.  Each
     Ancillary Agreement shall be in full force and effect and all of the terms
     and conditions of each such Ancillary Agreement shall be satisfied in all
     material respects.

                                       15
<PAGE>
 
          (b)  Representations and Warranties.  The representations and
     warranties of Sprint and Sprint L.P. shall be true and correct (i) as of
     the date referred to in any representation or warranty that addresses a
     matter as of a particular date, or (ii) as to all other representations and
     warranties, as of the date of this Agreement and as of the Offer Acceptance
     Time; unless, in either the case of clause (i) or (ii), the inaccuracies
     under such representations and warranties, would not, individually or in
     the aggregate, (x) have a Material Adverse Effect on Sprint or Sprint L.P.,
     or (y) materially impair the ability of Sprint and Sprint L.P. to enter
     into and perform this Agreement or any Ancillary Agreement to which any of
     them is a Party and their respective obligations thereunder, in each case
     without giving effect to any supplement to any schedule to this Agreement
     or to any Ancillary Agreement (provided, however, that any supplement must
                                    --------  -------                          
     be objected to before the earlier of the Offer Acceptance Time or 10
     Business Days from the date of delivery thereof).  The Company, Newco, and
     Newco Sub shall have each received a separate certificate to such effect
     dated the Offer Acceptance Date and executed by a duly authorized executive
     officer of each of Sprint and Sprint L.P., in each case without giving
     effect to any supplement to any Schedule to this Agreement or to any
     Ancillary Agreement.

          (c)  Performance of Obligations and Covenants. Sprint shall have
     performed or complied in all material respects with all obligations and
     covenants required by this Agreement and each of the Ancillary Agreements
     to be performed or complied with by Sprint by the time of the Closing.

          (d)  Legal Opinion. The Company, Newco and Newco Sub shall have
     received the legal opinion of Stinson, Mag & Fizzell, P.C., counsel to
     Sprint and Sprint L.P., dated as of the Closing Date, in form and substance
     reasonably satisfactory to Newco and the Company.

          (e)  Sprint Acquisition Proposal.  Sprint shall not have entered into
     an agreement providing for a transaction contemplated by an Acquisition
     Proposal, nor shall it have consummated any such transaction, nor shall
     Sprint have received any Acquisition Proposal (i) recommended by the Board
     of Directors of Sprint, or (ii) if not so recommended, which the Board of
     Directors of the Company reasonably determines in good faith upon
     consultation with its outside financial advisors is reasonably likely to be
     consummated.

     SECTION 2.04   Condition to Closing of All Parties.  The obligations of
Sprint, Sprint L.P., Newco, Newco Sub and the Company to consummate the
transactions contemplated to occur at the Closing other than the Offer are
subject to the satisfaction of the condition that Sprint shall have accepted for
payment shares of Common Stock pursuant to the Offer in accordance with this
Agreement (the "Offer Acceptance Condition").

                                       16
<PAGE>
 
                                  ARTICLE III

                        REPRESENTATIONS AND WARRANTIES

     SECTION 3.01   Representations and Warranties of the Company.  Except as
disclosed in the schedules attached to this Agreement setting forth exceptions
to the Company's representations and warranties set forth herein (the "Company
Disclosure Schedules"), the Company represents and warrants to Sprint and Sprint
L.P. as set forth below.  The Company Disclosure Schedules will be arranged in
sections corresponding to sections of this Agreement to be modified thereby.

          (a)  Organization, Standing and Power.  The Company is a corporation
     duly organized, validly existing and in good standing under the laws of the
     jurisdiction in which it is incorporated and has all requisite power and
     authority to own, lease and operate its properties and to carry on its
     business as now being conducted.  The Company is duly qualified or licensed
     to do business and is in good standing in each jurisdiction in which the
     nature of its business or the ownership or leasing of its properties makes
     such qualification or licensing necessary, other than in such jurisdictions
     where the failure to be so qualified or licensed (individually or in the
     aggregate) would not have a Material Adverse Effect on the Company.  The
     Company has made available to Sprint for its review complete and correct
     copies of its certificate of incorporation and bylaws, in each case as
     amended to the date of this Agreement.

          (b)  Subsidiaries and Joint Ventures. The Company does not have any
     Subsidiaries. The Company does not have the right to acquire an equity
     interest in any corporation, partnership, limited liability company, joint
     venture, business trust or any other entity, except for Newco and Newco Sub
     pursuant to the Merger.

          (c)  Capital Structure. The authorized capital stock of the Company
     consists of 50,000,000 shares of Common Stock and 10,000,000 shares of
     preferred stock, par value $0.01 per share. At the close of business on
     January 31, 1998, (i) 11,293,394 shares of Common Stock and no shares of
     preferred stock of the Company were issued and outstanding, (ii) no shares
     of Common Stock were held by the Company in its treasury, (iii) 1,072,012
     shares of Common Stock were reserved for issuance pursuant to outstanding
     stock options granted under the 1995 Stock Option Plan to purchase shares
     of Common Stock ("Employee Stock Options") and an additional 96,158 shares
     of Common Stock were available for the grant of Employee Stock Options
     pursuant to such plan (and upon approval by the Company's stockholders of a
     pending proposal there will be 600,000 additional shares of Common Stock as
     to which options can be granted under the 1995 Stock Option Plan), (iv) no
     shares of Common Stock were reserved for issuance pursuant to outstanding
     stock options granted under the Directors Stock Option Plan to purchase
     shares of Common Stock ("Director Stock Options") and an additional 62,500
     shares of Common Stock were available for the grant of Director Stock
     Options pursuant to such plan, (v) 391,500 shares of Common Stock were
     reserved for issuance pursuant to the Company's convertible note with UUNET

                                       17
<PAGE>
 
     Technologies, Inc., and (vi) 887,647 shares of Common Stock were reserved
     for issuance upon the exercise of outstanding warrants. Except as set forth
     above or as otherwise expressly provided herein, at the close of business
     on January 31, 1998, no shares of capital stock or other voting securities
     of the Company were issued, reserved for issuance or outstanding and except
     as set forth on Schedule 3.01(c), there are not any phantom stock or other
     contractual rights the value of which is determined in whole or in part by
     the value of any capital stock of the Company ("Stock Equivalents"). There
     are no outstanding stock appreciation rights ("SARs") with respect to
     Common Stock that were not granted in tandem with a related Employee Stock
     Option. When issued and sold to Sprint, the Convertible Preferred Stock and
     the Convertible Notes will be duly authorized, validly issued, fully paid
     and non-assessable and free and clear of all Liens. The Newco Common Stock
     issued upon conversion of the Convertible Preferred Stock and the
     Convertible Notes, will be duly authorized, validly issued, fully paid and
     nonassessable and free and clear of all Liens. Other than this Agreement
     and the Ancillary Agreements, the Convertible Preferred Stock and the
     Convertible Notes are not, and the Newco Common Stock issuable upon
     conversion of the Convertible Preferred Stock and the Convertible Notes
     will not be, subject to any voting trust agreement or other contract,
     agreement, arrangement, commitment or understanding, including any such
     agreement, arrangement, commitment or understanding restricting or
     otherwise relating to the voting or disposition of the Convertible
     Preferred Stock or the Convertible Notes. All outstanding shares of capital
     stock of the Company are, and all shares that may be issued pursuant to any
     stock plans and the other agreements and instruments listed above will be,
     when issued, duly authorized, validly issued, fully paid and nonassessable
     and not subject to preemptive rights. Except as set forth above and in
     Schedule 3.01(c), and as otherwise expressly set forth in this Agreement,
     and except for changes since January 31, 1998 resulting from the grant or
     exercise of Employee Stock Options, Director Stock Options, or warrants and
     the conversion of notes described in clauses (v) and (vi) above, as of the
     date of this Agreement, there are not any securities, options, warrants,
     calls, rights to purchase, rights of first refusal, securities convertible
     into or exchangeable for voting securities, commitments, agreements,
     arrangements or undertakings of any kind to which the Company or any of its
     Subsidiaries is a party or by which any of them is bound obligating the
     Company to issue, deliver or sell or create, or cause to be issued,
     delivered or sold or created, additional shares of capital stock or other
     voting securities or Stock Equivalents of the Company or obligating the
     Company to issue, grant, extend or enter into any such security, option,
     warrant, call, right, commitment, agreement, arrangement or undertaking
     (collectively referred to as "Dilutable Securities"). As of the date of
     this Agreement, there are not any outstanding contractual obligations of
     the Company to repurchase, redeem or otherwise acquire any shares of
     capital stock of the Company, except pursuant to existing employee
     arrangements.

          (d) Authority; Noncontravention.  The Company has the requisite
     corporate power and authority to enter into this Agreement and the
     Ancillary Agreements and, subject, with respect to consummation of the
     Merger, to prior approval of the Merger by the stockholders of the Company,
     Newco and Newco Sub, as appropriate, in accordance with the

                                       18
<PAGE>
 
     Delaware General Corporation Law ("DGCL"), to consummate the transactions
     contemplated by this Agreement and the Ancillary Agreements. Except as set
     forth on Schedule 3.01(d), the execution and delivery by the Company of
     this Agreement and each Ancillary Agreement to which it is a party and the
     consummation by it of the transactions contemplated by this Agreement and
     the Ancillary Agreements have been duly authorized by all necessary
     corporate action on the part of the Company, subject, with respect to
     consummation of the Merger, to prior approval of the Merger by the
     stockholders of the Company, Newco and Newco Sub, as appropriate, in
     accordance with the DGCL. This Agreement and the Ancillary Agreements to
     which it is party have been duly executed and delivered by each of the
     Company, Newco and Newco Sub, as appropriate, and, subject, with respect to
     consummation of the Merger, to approval of the Merger by the stockholders
     of the Company in accordance with DGCL, and assuming this Agreement and the
     Ancillary Agreements constitute the valid and binding agreements of Sprint,
     constitute valid and binding obligations of each of them enforceable
     against the Company, Newco, and Newco Sub, respectively, in accordance with
     their respective terms, except to the extent that the enforcement of this
     Agreement or the Ancillary Agreements may be limited by (i) bankruptcy,
     insolvency, reorganization, moratorium or other similar laws now or
     hereafter in effect relating to creditors' rights generally, and (ii)
     general principles of equity regardless of whether enforceability is
     considered in a proceeding in equity or at law. Except as set forth on
     Schedule 3.01(d), the execution and delivery of this Agreement and the
     Ancillary Agreements by the Company did not, and the consummation of the
     transactions contemplated by this Agreement and the Ancillary Agreements,
     and compliance with the provisions of the Marketing Agreement and the
     Network Agreement, without obtaining the consent of any third party will
     not, conflict with, or result in any violation of, or default (with or
     without notice or lapse of time, or both) under, or give rise to a right of
     termination, cancellation or acceleration of any obligation or to the loss
     by the Company of a material benefit under, or result in the creation of
     any Lien upon any of the properties or assets of the Company under, (i) the
     certificate of incorporation or bylaws of the Company, (ii) any loan or
     credit agreement, note, bond, mortgage, indenture, lease or other
     agreement, instrument, permit or license applicable to the Company or its
     properties or assets or (iii) subject to the governmental filings and other
     matters referred to in the following sentence, any Law applicable to the
     Company or its respective properties or assets, other than, in the case of
     clauses (ii), (iii) and (iv), any such conflicts, violations, defaults,
     rights or Liens that individually or in the aggregate would not (x) have a
     Material Adverse Effect on the Company, (y) materially impair the ability
     of the Company to perform its obligations under this Agreement or any
     Ancillary Agreement to which it is a party or (z) prevent the consummation
     of any of the transactions contemplated by this Agreement or any of the
     Ancillary Agreements. No consent, approval, order or authorization of, or
     registration, declaration or filing with, any Governmental Entity is
     required by the Company in connection with the execution and delivery of
     this Agreement and the Ancillary Agreements or the consummation by the
     Company of the transactions contemplated by this Agreement and the
     Ancillary Agreements, except for (i) the filing of a premerger notification
     and report form by the Company under the HSR Act and the expiration of the
     applicable waiting period or early termination thereof and, (ii) the filing
     with the SEC of (w) the Proxy Statement, (x) the S-4, 

                                       19
<PAGE>
 
     (y) a solicitation/recommendation statement on Schedule 14D-9 and (z) such
     reports under Sections 12 and 13(a) of the Exchange Act as may be required
     in connection with this Agreement, the Ancillary Agreements and the
     transactions contemplated by this Agreement and the Ancillary Agreements,
     (iii) the filing of the Certificate of Merger with the Secretary of State
     of the State of Delaware, and (iv) such other consents, approvals, orders,
     authorizations, registrations, declarations and filings as are set forth on
     Schedule 3.01(d).

          (e)  SEC Documents; Undisclosed Liabilities. The Company has filed all
     required reports, schedules, forms, statements and other documents with the
     SEC since the filing of its initial registration statement with respect to
     its initial public offering which was declared effective on January 22,
     1997 (the "SEC Documents" which are deemed to include such registration
     statement). As of their respective dates, the SEC Documents complied in all
     material respects with the requirements of the Securities Act or the
     Exchange Act, as the case may be, applicable to such SEC Documents, and
     none of the SEC Documents contained any untrue statement of a material fact
     or omitted to state a 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 Company has
     filed all exhibits to its SEC documents required by Item 601 of SEC
     Regulation S-K or which would have been required to be filed if there were
     no exclusions or exceptions in paragraph (b)(10) of such Item 601. The
     financial statements of the Company included in the SEC Documents comply as
     to form in all material respects with applicable accounting requirements
     and the published rules and regulations of the SEC with respect thereto,
     have been prepared in accordance with generally accepted accounting
     principles (except, in the case of unaudited statements, as permitted by
     Form 10-Q of the SEC and SEC Regulations S-X) applied on a consistent basis
     during the periods involved (except as may be indicated in the notes
     thereto) and fairly present the financial position of the Company as of the
     dates thereof and its statements of operations, stockholders equity and
     cash flows for the periods then ended (subject, in the case of unaudited
     statements, to normal, recurring year-end audit adjustments). Except as set
     forth in the SEC Documents filed and publicly available prior to the date
     of this Agreement ("Company Filed SEC Documents"), as of the date hereof,
     the Company has no liabilities or obligations of any nature (whether
     accrued, contingent, absolute, determined, determinable or otherwise),
     other than (i) liabilities provided for in the Company's unaudited balance
     sheet included in the Company's Quarterly Report on Form 10-Q for its third
     fiscal quarter ("Unaudited Balance Sheet"), dated as of September 30, 1997
     (the "Unaudited Balance Sheet Date"), (ii) liabilities and obligations
     incurred in the Ordinary Course of Business since the Unaudited Balance
     Sheet Date, and (iii) liabilities and obligations under this Agreement and
     the Ancillary Agreements.

          (f)  Absence of Certain Changes or Events. Except as disclosed in
     Schedule 3.01(f) or as reflected in Section 3.01(c), the Company Filed SEC
     Documents, or except as contemplated by this Agreement, since the Unaudited
     Balance Sheet Date, the Company has conducted its business only in the
     Ordinary Course of Business and (i) there has not occurred any transaction,
     or condition (financial or otherwise) of any character (whether or not in
     the Ordinary Course of Business), event or change (including the incurrence
     of any 

                                       20
<PAGE>
 
     liabilities of any nature, whether or not accrued, contingent or otherwise)
     having individually or in the aggregate, a Material Adverse Effect on the
     Company, and (ii) the Company has not taken any action that would have been
     prohibited under Section 4.01 hereof as if the Agreement had been in effect
     on the date of such action.

          (g)  Litigation. Except as disclosed in the Company Filed SEC
     Documents or as set forth on Schedule 3.01(g), there is no suit, action or
     proceeding pending or, to the Knowledge of the Company, Threatened against
     the Company that, individually or in the aggregate, would have a Material
     Adverse Effect on the Company.

          (h)  Benefit Plans.

               (i)    Schedule 3.01(h) hereto contains a true and complete list
          of each Benefit Plan. With respect to each Benefit Plan, the Company
          has made available to Sprint a true and correct copy of (a) the most
          recent annual report (Form 5500) filed with the IRS, if any, (b) the
          plan document, (c) any summary plan description relating to such
          Benefit Plan, and (d) each trust agreement and group annuity contract,
          if any, relating to such Benefit Plan.

               (ii)   With respect to the Benefit Plans, individually and in the
          aggregate, no event has occurred, and to the Company's Knowledge,
          there exists no present condition or set of circumstances in
          connection with which the Company is now subject to, or could
          reasonably be expected to be subject to, any liability under ERISA,
          the Code, or any other applicable Law, except liability for benefit
          claims and funding obligations or contributions payable in the
          ordinary course, and to the Company's Knowledge each of the Benefit
          Plans has at all times in all material respects been in compliance
          with and administered in accordance with its terms, the applicable
          provisions of ERISA, the Code or any other applicable Law.

               (iii)  Each of the Benefit Plans and related trusts that is
          intended to be qualified in form under Section 401(a) and tax exempt
          under Section 501(a) of the Code, respectively, has been determined by
          the IRS to so qualify under the Code and, to the Company's Knowledge,
          nothing has occurred since such determination to cause any of such
          Benefit Plans not to qualify under Section 401(a) or any of such
          related trusts not to be tax exempt under Section 501(a) of the Code
          other than the effective date of certain amendments of the Code and
          ERISA, the remedial amendment period for which has not expired.

               (iv)   With respect to the Benefit Plans, individually and in the
          aggregate, all required reports and descriptions have been
          appropriately filed and distributed to the extent ERISA, the Code or
          applicable Law requires.

               (v)    With respect to the Benefit Plans, individually and in the
          aggregate, there has been no prohibited transaction within the meaning
          of Section 406 of ERISA 

                                       21
<PAGE>
 
          or Section 4975 of the Code involving the Company, and there is no
          action, suit, grievance, arbitration or other claim with respect to
          the administration or investment of assets of the Benefit Plans (other
          than routine claims for benefits made in the ordinary course) pending,
          or to the Company's Knowledge, Threatened, and to the Company's
          Knowledge there is no present condition or set of circumstances which
          could reasonably be expected to give rise to any such action, suit,
          grievance, arbitration or other claim.

               (vi)   Neither the Company nor any corporation, trade or business
          which is affiliated with the Company, in the manner described in
          Section 414(b), (c), (m) and (o) of the Code or Section 4001(a)(14) of
          ERISA, has ever sponsored, or made or been obligated to make
          contributions to, (i) any defined benefit pension plan subject to
          Title IV of ERISA or any plan subject to the minimum funding standards
          under Section 412 of the Code or Section 302 of ERISA; or (ii) any
          nonqualified deferred compensation plan or arrangement, including,
          without limitation, any plans providing for post employment benefits
          such as life or health insurance or any other benefits.

          (i)  Taxes.  Except as set forth on Schedule 3.01(i), the Company has
     timely filed all Returns and reports required to be filed by it on or
     before the date hereof, except where failure to timely file would not have
     a Material Adverse Effect on the Company.  All such Returns are complete
     and accurate except where the failure to be complete or accurate would not
     have a Material Adverse Effect on the Company.  The Company has paid or has
     set up an adequate reserve for the payment of all Taxes shown as due on
     such Returns, except where the failure to do so would not have a Material
     Adverse Effect on the Company.  The Unaudited Balance Sheet contains an
     adequate reserve for all Taxes payable by the Company accrued through the
     Unaudited Balance Sheet Date.  Except as set forth on Schedule 3.01(i), no
     deficiencies for any Taxes have been asserted, proposed or assessed against
     the Company in writing that have not been paid or otherwise settled or
     reserved against, except for deficiencies the assertion, proposing or
     assessment of which would not have a Material Adverse Effect on the
     Company, and no waivers of the time to assess any such Taxes are pending.
     There are no material Liens for Taxes (other than for current taxes not yet
     due and payable) on the assets of the Company.

          (j)  Voting Requirements. The only vote of the holders of any class or
     series of the Company's capital stock that is necessary to approve this
     Agreement, the Ancillary Agreements or the transactions contemplated by
     this Agreement and the Ancillary Agreements is (i) the affirmative vote by
     a majority of the votes cast by the holders of Common Stock entitled to
     vote with respect to the issuance and sale of the Convertible Preferred
     Stock and Convertible Notes, as may be required by paragraph (i) of NASD
     Rule 4460, and (ii) the affirmative vote by the holders of a majority of
     the outstanding shares of Common Stock entitled to vote with respect to the
     Merger, as required by Section 251 of the DGCL.

                                       22
<PAGE>
 
          (k) Brokers. No broker, investment banker, financial advisor or other
     person, other than Deutsche Morgan Grenfell Inc., the fees and expenses of
     which will be paid by the Company, is entitled to any broker's, finder's,
     financial advisor's or other similar fee or commission, in connection with
     the transactions contemplated by this Agreement and the Ancillary
     Agreements, based upon arrangements made by or on behalf of the Company
     (except as set forth on Schedule 3.01(k)).

          (l) Compliance with Laws. The Company has in effect all approvals,
     authorizations, certificates, filings, franchises, licenses, notices,
     permits, variances, exemptions, orders and rights ("Permits") necessary for
     it to own, lease or operate its properties and assets and to carry on its
     business as now conducted, and there has not occurred any default under any
     Permit, except for the absence of Permits and for defaults under Permits
     that, individually or in the aggregate, have not had a Material Adverse
     Effect on the Company. Except as disclosed in the Company Filed SEC
     Documents, the Company is in compliance with all applicable Law, except
     where failures to so comply, individually or in the aggregate, would not
     have a Material Adverse Effect on the Company. Except as set forth in
     Schedule 3.01(l) hereto or as described in Company Filed SEC Documents
     filed prior to the date hereof, as of the date of this Agreement, no
     investigation or review by any Governmental Entity with respect to the
     Company is pending or, to the Company's Knowledge, Threatened, other than,
     in each case, those the outcome of which would not have a Material Adverse
     Effect on the Company.

          (m) Environmental Matters. The Company is and at all times has been
     in full compliance with, and has not been and is not in violation of or
     liable under, any Environmental Law (which compliance includes the
     possession by the Company of all Permits required under applicable
     Environmental Law and compliance with the terms and conditions thereof),
     except for such failure to be in compliance which, individually or in the
     aggregate, would not have a Material Adverse Effect on the Company. There
     are no pending or, to the Company's Knowledge, Threatened claims, orders,
     notices, administrative or judicial actions, or Encumbrances, relating to
     environmental, health, and safety liabilities arising under or pursuant to
     any federal, state or local Environmental Laws, with respect to or
     affecting any of the properties and assets (whether real, personal, or
     mixed) in which the Company has an interest, except for any such claim,
     order, notice, administrative or judicial action, Encumbrance or other
     restriction that would not, individually or in the aggregate, have a
     Material Adverse Effect on the Company.

          (n) Intellectual Property. The Company owns sufficient right, title
     and interest in and to, or has valid licenses of sufficient scope and
     duration for, all patents, patent rights, copyrights, trademarks, service
     marks, trade names, software, trade secrets, confidential information and
     other intellectual property material to the operation of the business of
     the Company as currently conducted or

                                       23
<PAGE>
 
     proposed to be conducted (the "Intellectual Property Assets") and as
     presently proposed to be conducted. The Intellectual Property Assets are
     free and clear of all Liens which would materially impair the Company's
     ability to use the Intellectual Property Assets in the business of the
     Company as currently conducted or proposed to be conducted. The Company has
     granted to no third party any rights in and to the Intellectual Property
     Assets except for distribution rights, OEM rights, end user licenses and
     rights to reproduce certain of the Intellectual Property Assets in the
     Ordinary Course of Business in connection with the marketing and
     distribution of the Company's product and service offerings, and which
     individually and in the aggregate would not have a Material Adverse Effect.
     Except as set forth on Schedule 3.01(n), none of the Intellectual Property
     Assets owned or licensed by the Company infringes, or conflicts with, or to
     the Company's Knowledge, is alleged to infringe upon or conflict with the
     intellectual property rights of any third party, which infringement or
     alleged infringement could have a Material Adverse Effect. The Company has
     no Knowledge that any of its employees performing or managing key functions
     of the Company is obligated under any contract (including licenses,
     covenants or commitments of any nature) or other agreement, or subject to
     any judgment, decree or order of any court or administrative agency, that
     would interfere with the use of such employee's best efforts to promote the
     interests of the Company or that would conflict with the Company's business
     as proposed to be conducted. To the Company's Knowledge, neither the
     execution nor delivery of this Agreement or any Ancillary Agreement, nor
     the conduct of the Company's business by the employees of the Company, nor
     the conduct of the Company's business as proposed, will conflict with or
     result in a breach of the terms, conditions or provisions of, or constitute
     a default under, any contract, covenant or instrument under which any of
     such employees is now obligated, which conflict or breach would have a
     Material Adverse Effect. The Company does not presently utilize or intend
     to utilize any inventions of any of its employees (or people it currently
     intends to hire) made prior to their employment by the Company. To the
     Company's Knowledge, any software owned by the Company, and any software
     used independently by the Company and owned by third parties and licensed
     to the Company is, in all material respects, Year 2000 Compliant. "Year
     2000 Compliant" means (i) the software is capable of correctly processing,
     providing and receiving date data within and between the twentieth and
     twenty-first century (including accounting for all required leap year
     calculations); and (ii) all date fields in the software use four digit year
     fields.

          (o) Certain Payments. Neither the Company, nor any of its directors,
     officers, agents, or employees, or to the Company's Knowledge, any other
     Person associated with or acting for or on behalf of the Company, has
     directly or indirectly (a) made any contribution, gift, bribe, rebate,
     payoff, influence payment, kickback, or other payment to any Person,
     private or public, regardless of form, whether in money, property, or
     services (i) to obtain favorable treatment in securing business, (ii) to
     pay for favorable treatment for business secured, (iii) to obtain special
     concessions or for special concessions already obtained, for or in respect
     of the Company or any Affiliate of the Company, (b) established or
     maintained any fund or asset that has not been appropriately recorded in
     the books and records of the Company, which in the case of either clause
     (a) or (b) would be in violation of Law or would have a Material Adverse
     Effect.

     SECTION 3.02   Representations and Warranties of Newco and Newco Sub. Newco
and Newco Sub represent and warrant to Sprint and Sprint L.P., jointly and
severally, as follows:

                                       24
<PAGE>
 
          (a)  Organization, Standing and Power. Newco and Newco Sub were each
     incorporated under the DGCL on January 30, 1997 and neither of them has
     engaged in any business, owns any property or assets (except for $10 in
     cash received by Newco for the issuance of 10 shares of its common stock to
     its sole stockholder (which is not the Company or an Affiliate of the
     Company) and $10 in cash received by Newco Sub for the issuance of 10
     shares of its common stock to Newco, which in each case represents all of
     their outstanding shares of capital stock) or is a party to any agreement,
     except for this Agreement. Each of Newco and Newco Sub is a corporation
     duly organized, validly existing and in good standing under the laws of the
     jurisdiction in which it is incorporated. Newco will, immediately following
     the Merger, be duly qualified or licensed to do business and be in good
     standing in each jurisdiction in which the nature of the business conducted
     or the ownership or leasing of its properties makes such qualification or
     licensing necessary, other than in such jurisdictions where the failure to
     be so qualified or licensed (individually or in the aggregate) would not
     have a Material Adverse Effect on Newco immediately following the Merger.
     Each of Newco and Newco Sub has made available to Sprint for its review
     complete and correct copies of its certificate of incorporation and bylaws,
     in each case as amended to the date of this Agreement.

          (b)  Authority; Noncontravention. Each of Newco and Newco Sub has the
     requisite corporate power and authority to enter into this Agreement and
     the Ancillary Agreements and, subject, with respect to consummation of the
     Merger, to approval of the Merger by the stockholders of the Company, Newco
     and Newco Sub in accordance with the DGCL, to consummate the transactions
     contemplated by this Agreement and the Ancillary Agreements. Except as set
     forth on Schedule 3.02(b), the execution and delivery by each of Newco and
     Newco Sub of this Agreement and each Ancillary Agreement to which it is a
     party and the consummation by each of them of the transactions contemplated
     by this Agreement and the Ancillary Agreements have been duly authorized by
     all necessary corporate action on the part of Newco and Newco Sub,
     respectively, subject, with respect to consummation of the Merger, to prior
     approval of the Merger by the stockholders of the Company, Newco and Newco
     Sub in accordance with DGCL. This Agreement and the Ancillary Agreements to
     which it is party have been duly executed and delivered by each of Newco
     and Newco Sub and, subject, with respect to consummation of the Merger, to
     prior approval of the Merger by the stockholders of the Company, Newco and
     Newco Sub in accordance with DGCL, and assuming this Agreement and the
     Ancillary Agreements constitute the valid and binding agreements of Sprint
     and the Company, constitute valid and binding obligations of each of them
     enforceable against Newco and Newco Sub, respectively, in accordance with
     their respective terms, except to the extent that the enforcement hereof
     and thereof may be limited by (i) bankruptcy, insolvency, reorganization,
     moratorium or other similar laws now or hereafter in effect relating to
     creditors' rights generally, and (ii) general principles of equity
     regardless of whether enforceability is considered in a proceeding in
     equity or at law. Except as set forth on Schedule 3.02(b), the execution
     and delivery of this Agreement and the Ancillary Agreements by Newco and
     Newco Sub did not, and the consummation of the transactions contemplated by
     this Agreement and the Ancillary Agreements and compliance

                                       25
<PAGE>
 
     with the provisions of the Marketing Agreement and the Network Agreement
     without obtaining the consent of any third party will not, conflict with,
     or result in any violation of, or default (with or without notice or lapse
     of time, or both) under, or give rise to a right of termination,
     cancellation or acceleration of any obligation or to loss by Newco or Newco
     Sub of a material benefit under, or result in the creation of any Lien upon
     any of the properties or assets of Newco or Newco Sub under, (i) the
     certificate of incorporation or bylaws of Newco or Newco Sub, (ii) any loan
     or credit agreement, note, bond, mortgage, indenture, lease or other
     agreement, instrument, permit or license applicable to Newco or Newco Sub
     or their respective assets or (iii) subject to the governmental filings and
     other matters referred to in the following sentence, any Law applicable to
     Newco or Newco Sub or their respective assets, other than, in the case of
     clauses (ii) and (iii), any such conflicts, violations, defaults, rights or
     Liens that individually or in the aggregate would not (x) have a Material
     Adverse Effect on Newco or Newco Sub, (y) materially impair the ability of
     Newco and Newco Sub to perform its obligations under this Agreement or any
     Ancillary Agreement to which it is a party or (z) prevent the consummation
     of any of the transactions contemplated by this Agreement or any of the
     Ancillary Agreements. No consent, approval, order or authorization of, or
     registration, declaration or filing with, any Governmental Entity is
     required by Newco or Newco Sub in connection with the execution and
     delivery of this Agreement and the Ancillary Agreements or the consummation
     by Newco and Newco Sub of the transactions contemplated by this Agreement
     and the Ancillary Agreements, except for (i) the filing with the SEC of (i)
     the S-4, (ii) the filing of the Certificate of Merger with the Secretary of
     State of the State of Delaware, and (iii) such other consents, approvals,
     orders, authorizations, registrations, declarations and filings as are set
     forth on Schedule 3.02(b).

          (c)  Litigation. There is no suit, action or proceeding pending or, to
     the Knowledge of Newco or Newco Sub, Threatened against Newco or Newco Sub.

          (d)  Voting Requirements. The only vote of the holders of any class or
     series of the capital stock of Newco and Newco Sub that is necessary to
     approve this Agreement, the Ancillary Agreements or the transactions
     contemplated by this Agreement and the Ancillary Agreements is the
     affirmative vote by the holders of a majority of their respective
     outstanding shares of common stock entitled to vote with respect to the
     Merger, as required by Section 251 of the DGCL.

          (e)  Brokers. No broker, investment banker, financial advisor or other
     person, other than Deutsche Morgan Grenfell Inc., the fees and expenses of
     which will be paid by the Company, is entitled to any broker's, finder's,
     financial advisor's or other similar fee or commission in connection with
     the transactions contemplated by this Agreement and the Ancillary
     Agreements based upon arrangements made by or on behalf of Newco and Newco
     Sub.

          (f)  Compliance with Laws. Newco and Newco Sub will, immediately
     following the Merger, have all Permits necessary for them to own, lease or
     operate the properties and assets now owned by the Company and to carry on
     the business now conducted by the

                                       26
<PAGE>
 
     Company, except for such Permits, the absence of which would not have,
     individually or in the aggregate, a Material Adverse Effect on Newco and
     Newco Sub, taken as a whole.

     SECTION 3.03   Representations and Warranties of Sprint and Sprint L.P..
Sprint and Sprint L.P., jointly and severally, represent and warrant to the
Company, Newco and Newco Sub as follows:

          (a)  Organization, Standing and Power. Sprint is a corporation duly
     organized, validly existing and in good standing under the laws of the
     jurisdiction in which it is incorporated. Sprint L.P. is a limited
     partnership duly organized, validly existing and in good standing under the
     laws of the jurisdiction in which it is organized. Each of Sprint and
     Sprint L.P. has all requisite power and authority to own, lease and operate
     their respective properties and to carry on their respective businesses as
     now being conducted. Each of Sprint and Sprint L.P. and each of their
     respective Significant Subsidiaries is duly qualified or licensed to do
     business and is in good standing in each jurisdiction in which the nature
     of its business or the ownership or leasing of its properties makes such
     qualification or licensing necessary, other than in such jurisdictions
     where the failure to be so qualified or licensed (individually or in the
     aggregate) could not reasonably be expected to have a Material Adverse
     Effect on Sprint or Sprint L.P. and their respective Subsidiaries, taken as
     a whole. Sprint has made available to the Company, Newco and Newco Sub for
     their review complete and correct copies of its certificate of
     incorporation and bylaws. Sprint L.P. has made available to the Company,
     Newco and Newco Sub for their review a complete and correct copy of its
     constitutive documents.

          (b)  Subsidiaries. A schedule to Sprint's Annual Report on Form 10-K
     for 1996 lists each Significant Subsidiary of Sprint. All the outstanding
     shares of capital stock of each Significant Subsidiary that is a
     corporation have been validly issued and are fully paid and nonassessable
     and are not subject to any options or other rights to acquire any such
     shares.

          (c)  Authority; Noncontravention. Sprint has the requisite corporate
     power and authority, and Sprint L.P. has the requisite power and authority,
     to enter into this Agreement and the Ancillary Agreements and to consummate
     the transactions contemplated by this Agreement and the Ancillary
     Agreements. The execution and delivery by Sprint and Sprint L.P. of this
     Agreement and each Ancillary Agreement to which it is a party and the
     consummation by it of the transactions contemplated by this Agreement and
     the Ancillary Agreements have been duly authorized by, in the case of
     Sprint, all necessary corporate action, and in the case of Sprint L.P., all
     necessary action of the limited partnership and its general partner. This
     Agreement and the Ancillary Agreements to which Sprint or Sprint L.P. is
     party have been duly executed and delivered by Sprint and Sprint L.P. and,
     assuming this Agreement and the Ancillary Agreements constitute the valid
     and binding agreements of the Company, Newco and Newco Sub, constitute
     valid and binding obligations enforceable against Sprint and Sprint L.P. in
     accordance with their respective terms, except to the extent

                                       27
<PAGE>
 
     that the enforcement of this Agreement or the Ancillary Agreements may be
     limited by (i) bankruptcy, insolvency, reorganization, moratorium or other
     similar laws now or hereafter in effect relating to creditors' rights
     generally, and (ii) general principles of equity regardless of whether
     enforceability is considered in a proceeding in equity or at law. Except as
     set forth on Schedule 3.03(c), the execution and delivery of this Agreement
     and the Ancillary Agreements by Sprint and Sprint L.P. did not, and the
     consummation of the transactions contemplated by this Agreement and the
     Ancillary Agreements and compliance with the provisions of the Marketing
     Agreement and the Network Agreement without obtaining the consent of any
     third party will not, conflict with, or result in any violation of, or
     default (with or without notice or lapse of time, or both) under, or give
     rise to a right of termination, cancellation or acceleration of any
     obligation or to loss by Sprint, Sprint L.P. or any of Sprint's Significant
     Subsidiaries, of a material benefit under, or result in the creation of any
     Lien upon any of the properties or assets of Sprint or Sprint L.P. under,
     (i) the certificate of incorporation or bylaws of Sprint or the comparable
     charter or organizational documents of Sprint L.P. or any of Sprint's
     Significant Subsidiaries, (ii) any loan or credit agreement, note, bond,
     mortgage, indenture, lease or other agreement, instrument, permit or
     license applicable to Sprint, Sprint L.P. or any of Sprint's Significant
     Subsidiaries or their respective properties or assets or (iii) subject to
     the governmental filings and other matters referred to in the following
     sentence, any judgment, order, decree, statute, law, ordinance, rule or
     regulation applicable to Sprint, Sprint L.P. or any of Sprint's Significant
     Subsidiaries or their respective properties or assets, other than, in the
     case of clauses (ii) and (iii), any such conflicts, violations, defaults,
     rights or Liens that individually or in the aggregate would not (x) have a
     Material Adverse Effect on Sprint, Sprint L.P. and Sprint's Subsidiaries,
     taken as a whole, (y) materially impair the ability of Sprint or Sprint
     L.P. to perform their respective obligations under this Agreement or any
     Ancillary Agreement to which it is a party or (z) prevent the consummation
     of any of the transactions contemplated by this Agreement or any of the
     Ancillary Agreements. No consent, approval, order or authorization of, or
     registration, declaration or filing with, any Governmental Entity is
     required by or with respect to Sprint or Sprint L.P. or any of Sprint's
     Significant Subsidiaries in connection with the execution and delivery of
     this Agreement and the Ancillary Agreements or the consummation by Sprint
     or Sprint L.P. of the transactions contemplated by this Agreement and the
     Ancillary Agreements, except for (i) the filing of a premerger notification
     and report form by Sprint or Sprint L.P. under the HSR Act and the
     expiration of the applicable waiting period or early termination thereof
     and, (ii) the filing with the SEC of (x) a tender offer statement on
     Schedule 14D-1 and (y) such reports under Sections 12 and 13(a) of the
     Exchange Act as may be required in connection with this Agreement, the
     Ancillary Agreements and the transactions contemplated by this Agreement
     and the Ancillary Agreements, and (iii) such other consents, approvals,
     orders, authorizations, registrations, declarations and filings as are set
     forth on Schedule 3.03(c).

          (d)  Brokers. No broker, investment banker, financial advisor or other
     person, other than SBC Warburg Dillon Read, Inc. the fees and expenses of
     which will be paid by Sprint, is entitled to any broker's, finder's,
     financial advisor's or other similar fee or

                                       28
<PAGE>
 
     commission in connection with the transactions contemplated by this
     Agreement and the Ancillary Agreements based upon arrangements made by or
     on behalf of Sprint or Sprint L.P.

          (e)  Ownership of Common Stock. As of the date of this Agreement,
     neither Sprint nor Sprint L.P. beneficially owns any shares of Common
     Stock.

          (f)  Investment Intent. Sprint is purchasing the Convertible Notes for
     advances under the Credit Agreement, and Sprint L.P. is purchasing the
     Convertible Preferred Stock in exchange for the Preferred Stock
     Consideration, in each case for their own account for investment and not
     with a present view to, or for sale in connection with, any distribution
     thereof in violation of the Securities Act. The certificates evidencing the
     Convertible Preferred Stock, the Convertible Notes and any shares of Common
     Stock issued upon conversion of the Convertible Preferred Stock or the
     Convertible Notes shall bear substantially the following legend (modified
     accordingly in the case of the Convertible Notes) until such time as there
     is a sale or transfer in accordance with this Agreement and the Ancillary
     Agreements or the termination thereof:

          "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN
          ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO, OR IN
          CONNECTION WITH, THE SALE OR DISTRIBUTION THEREOF. THE
          DISPOSITION AND VOTING OF SUCH SHARES IS SUBJECT TO THE
          CONDITIONS SPECIFIED IN THE INVESTMENT AGREEMENT DATED AS OF
          FEBRUARY 10, 1998, AMONG THE COMPANY, SPRINT, SPRINT L.P.,
          NEWCO, AND NEWCO SUB AND THE GOVERNANCE AGREEMENT DATED AS
          OF FEBRUARY 10, 1998, AMONG THE COMPANY, SPRINT, SPRINT
          L.P., AND NEWCO, AND NEWCO RESERVES THE RIGHT TO REFUSE THE
          TRANSFER OF SUCH SHARES UNTIL SUCH CONDITIONS HAVE BEEN
          FULFILLED WITH RESPECT TO SUCH TRANSFER. A COPY OF SUCH
          CONDITIONS WILL BE FURNISHED BY NEWCO TO THE HOLDER HEREOF
          UPON WRITTEN REQUEST AND WITHOUT CHARGE. THESE SECURITIES
          HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
          AS AMENDED, AND MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED
          OR HYPOTHECATED EXCEPT IN ACCORDANCE THEREWITH."

          (g)  Acquisition for Investment and Rule 144. Sprint and Sprint L.P.
     understand that the shares of Convertible Preferred Stock issued to them
     pursuant to the Agreement ("Sprint Shares") and Sprint understands that the
     Convertible Notes issued to Sprint pursuant to the Credit Agreement will
     not be registered under the Securities Act by reason of a specific
     exemption from the registration provision of the Securities Act which
     depends upon, among other things, the bona fide nature of their investment
     intent as expressed herein. Except as otherwise provided in Section
     3.03(i), Sprint and Sprint L.P. acknowledge that the Sprint Shares and the
     Convertible Notes must be held indefinitely unless they are subsequently

                                       29
<PAGE>
 
     registered under the Securities Act or an exemption from such registration
     is available. Sprint and Sprint L.P. have been advised or are aware of the
     provisions of Rule 144 promulgated under the Securities Act which permit
     limited resale of shares purchased in a private placement subject to the
     satisfaction of certain conditions. Sprint and Sprint L.P. are aware that
     the certificates representing the Sprint Shares, and that the Convertible
     Notes, will bear such legends relating to restrictions on resale under the
     Securities Act as provided in Section 3.01(f) and Newco under certain
     conditions may issue instructions to its stock transfer agent to stop the
     transfer of the Sprint Shares and the Convertible Notes unless made in
     accordance with this Agreement or any Ancillary Agreement.

          (h)  Legal Investment. The purchase of the Convertible Preferred Stock
     by Sprint L.P. and the purchase of Convertible Notes by Sprint hereunder is
     legally permitted by all applicable Law and all consents, approvals,
     authorizations of or designations, declarations or filings in connection
     with the valid execution and delivery of this Agreement by Sprint and
     Sprint L.P. or the purchase of the Convertible Preferred Stock by Sprint
     L.P. and the Convertible Notes by Sprint have been obtained, or will be
     obtained prior to the Closing Date.

          (i)  Purchase Entirely for Own Account. Sprint is purchasing the
     Convertible Notes for advances under the Credit Agreement, and Sprint L.P.
     is purchasing the Convertible Preferred Stock in exchange for the Preferred
     Stock Consideration, in each case for their own account and not as a
     nominee or agent, and not with a view to the resale or distribution of any
     part thereof, except for transfers permitted by this Agreement. Neither
     Sprint L.P. nor Sprint has any present intention of selling, granting any
     participation in, or otherwise distributing the Convertible Preferred Stock
     or the Convertible Notes. Neither Sprint nor Sprint L.P. has any contract,
     undertaking, agreement or arrangement with any Person to sell, transfer or
     grant participations to such Person or to any third person with respect to
     the Convertible Preferred Stock or the Convertible Notes. Notwithstanding
     any other provision of this Agreement, Sprint and Sprint L.P. shall be
     permitted to transfer the Convertible Preferred Stock, the Convertible
     Notes and the Newco Common Stock issued upon conversion thereof to any
     Affiliate of Sprint or Sprint L.P. without an opinion of counsel, without
     registration under the Securities Act or any state securities law, and
     without the consent of Newco, provided that any such Affiliate who acquires
                                   --------
     such Convertible Preferred Stock, Convertible Notes or Newco Common Stock
     agrees in writing to be subject to the applicable requirements of this
     Section 3.03 and any restrictions on transfer contained in any of the
     Ancillary Agreements to the same extent as if such Affiliate were the
     original purchaser thereof.

          (j)  Agreements with SIP Subscribers. Sprint L.P. has previously
     furnished to each of the Company, Newco and Newco Sub the form of agreement
     between Sprint L.P. and the SIP Subscribers governing the receipt of
     internet access services from Sprint L.P. ("SIP Agreements"). Sprint L.P.
     has complied in all material respects with all applicable terms and
     requirements of the SIP Agreements. As of the date hereof, Sprint has
     approximately 130,000 SIP Subscribers who are subject to SIP Agreements.
     Except as set forth in Schedule 3.03(j), the SIP Agreements are assignable
     to Newco in accordance with this Agreement and are enforceable against
     Sprint L.P. in accordance with their respective terms, except to the

                                       30
<PAGE>
 
     extent enforcement thereof may be limited by: (i) bankruptcy, insolvency,
     reorganization, moratorium or other similar laws now or hereafter in effect
     relating to creditors' rights generally, and (ii) general principals of
     equity, regardless of whether enforceability is considered in a proceeding
     in equity or at law; provided, however, that the SIP Agreements are subject
                          --------  -------    
     to immediate termination by unilateral action of the SIP Subscribers.

          (k) Financial Capability.  Sprint has sufficient funds available to
     finance the Offer and the other transactions contemplated by this Agreement
     and the Ancillary Agreements, and is not engaged in any financing activity,
     the consummation of which would be necessary in order for Sprint to
     consummate the Offer and the other transactions contemplated by this
     Agreement and the Ancillary Agreements.


                                  ARTICLE IV

                 COVENANTS RELATING TO CONDUCT OF BUSINESS AND
                                 OF THE COMPANY

     SECTION 4.01   Conduct of Business.   (a)  Conduct of Business by the
Company.  During the period from the date of this Agreement to the Closing Date,
the Company shall carry on its business in accordance with applicable Laws and
in the usual, regular and Ordinary Course in substantially the same manner as
heretofore conducted and, to the extent consistent therewith, use all reasonable
efforts to preserve intact its current business organization, keep available the
services of its current officers and employees and preserve its relationships
with customers, suppliers, licensors, licensees, distributors, joint venturers
and others having business dealings with it, except to the extent that the
failure to do so would not have a Material Adverse Effect on the Company.
Without limiting the generality of the foregoing, except as contemplated by this
Agreement, during the period from the date of this Agreement to the Closing
Date, the Company shall not, without obtaining the prior written consent of
Sprint, undertake any of the following:

               (i)   (x) declare, set aside or pay any dividends on, or make any
          other distributions in respect of any of its capital stock, (y) split,
          combine or reclassify any of its capital stock or issue or authorize
          the issuance of any other securities in respect of, in lieu of or in
          substitution for shares of its capital stock or (z) purchase, redeem
          or otherwise acquire any shares of capital stock of the Company or any
          other equity securities of the Company or any rights, warrants or
          options to acquire, or convert into or exchange for, any such shares
          or other equity securities, except for Employee Stock Options, shares
          repurchased or redeemed pursuant to any existing arrangements with
          existing employees;

               (ii)  except as set forth in subsection (iv) hereof below, issue,
          deliver, sell, pledge or otherwise encumber any shares of capital
          stock, any other voting securities or any securities convertible into
          or exchangeable for, or any rights, warrants or options to acquire,
          any such shares, voting securities or convertible or exchangeable

                                       31
<PAGE>
 
          securities (other than (x) the issuance of new Employee Stock Options
          or Director Stock Options under existing Benefit Plans or Common Stock
          upon the exercise or conversion of Employee Stock Options or Director
          Stock Options, warrants or convertible notes outstanding on the date
          of this Agreement and in accordance with their present terms, and (y)
          the issuance and sale of the Convertible Preferred Stock and the
          Convertible Notes in accordance with the terms hereof);

               (iii)  any amendment to the certificate of incorporation or
          bylaws of the Company;

               (iv)   acquire or agree to acquire (x) by merging or
          consolidating with, or by purchasing a substantial portion of the
          stock or assets of, or by any other manner, any business or any
          corporation, partnership, joint venture, association or other business
          organization or division thereof if the consideration paid by the
          Company in such transaction is in the form of an issuance of capital
          stock or Dilutable Securities which in the aggregate are in excess of
          the Issuance Percentage Limitation or (y) any assets that are
          material, individually or in the aggregate, to the Company;

               (v)    sell, lease, license, mortgage or otherwise encumber or
          subject to any Lien or otherwise dispose of any of its Intellectual
          Property Assets or any other properties or assets if, as a result
          thereof, the Company would suffer a Material Adverse Effect;

               (vi)   (A) incur any indebtedness for borrowed money or guarantee
          any such indebtedness of another Person, issue or sell any debt
          securities or warrants or other rights to acquire any debt securities
          of the Company, guarantee any debt securities of another Person, enter
          into any "keep well" or other agreement to maintain any financial
          statement condition of another Person or enter into any arrangement
          having the economic effect of any of the foregoing, except for short-
          term borrowings incurred in the Ordinary Course of Business or which
          do not exceed $10 million in the aggregate, or (B) make any loans,
          advances or capital contributions to, or investments in, any other
          Person other than (1) pursuant to existing contractual rights and (2)
          non-material loans or advances to employees in the Ordinary Course of
          Business;

               (vii)  make or agree to make any new capital expenditures or
          expenditures (other than capital expenditures which are contained in a
          duly approved budget of the Company as of the date hereof), which, are
          in excess of $5 million in the aggregate.

               (viii) change any accounting policy or procedure, other than any
          changes required by GAAP or applicable SEC accounting policy;

               (ix)   fail to maintain its books, accounts and records in any
          manner other than the usual, regular and ordinary manner, on a basis
          consistent with prior years and in a business-like manner in
          accordance with sound commercial practice;

                                       32
<PAGE>
 
               (x)  fail to timely file all tax returns and reports required to
          be filed with any Governmental Entity; or

               (xi) authorize any of, or commit or agree to take any of, the
          foregoing actions.

     (b)  Other Actions. The Company, Newco, Newco Sub, Sprint and Sprint L.P.
shall not, and Sprint shall not permit any of its Subsidiaries to, take any
action that would result in (i) any of the representations and warranties of
such party set forth in this Agreement or the Ancillary Agreements that are
qualified as to materiality becoming untrue, (ii) any of such representations
and warranties that are not so qualified becoming untrue in any material respect
or (iii) any of the conditions set forth in Article II not being satisfied. Each
of the Parties agrees to and shall use its respective commercially reasonable
efforts to cause the conditions for the respective benefit of the other Parties
hereto and set forth in Article II to be satisfied.

     (c)  Advice of Changes. Each of the Parties shall promptly notify the other
Parties of any change or event having a Material Adverse Effect on the other
Parties. If a Party provides notice to the other Parties of a change or event
having a Material Adverse Effect on the other Parties, and as to any of the
other Parties that fails to deliver notice within five (5) business days to such
notifying Party of its intention to not Close as a result of such change or
event, then such Party failing to deliver such notice shall be deemed to have
waived such change or event.

     SECTION 4.02   Access to Property and Information.  Sprint, Sprint L.P. and
their counsel, accountants, auditors and representatives shall have full access
during normal business hours to the facilities of the Company and to its books,
records, Contracts and documents concerning its business, assets and properties
that may reasonably be requested, provided that such inspections will not
                                  --------                               
unreasonably disrupt the Company's business or employees and the Company
receives reasonable advance notice of such inspections.

     SECTION 4.03   Public Disclosure.  No public release or announcement of the
transactions contemplated by this Agreement or any of the Ancillary Agreements
or related discussions or negotiations shall be made without advance approval
thereof by Sprint, the Company and Newco, except as may be required by Law or
legal process, in which case the other Parties shall receive prior notification
and opportunity for review before release.

     SECTION 4.04   HSR Act Filings.  As soon as practicable, the Company and
Sprint shall each file completed notification reports under the HSR Act, in
connection with the transactions contemplated by this Agreement and the
Ancillary Agreements and will cooperate with each other in attempting to secure
a waiver of the applicable waiting periods under such Act, and, upon the request
of either the Federal Trade Commission or the United States Department of
Justice, will supply such agency with any additional requested information as
expeditiously as possible.

                                       33
<PAGE>
 
     SECTION 4.05   Information. Each Party will promptly inform the other party
in writing of (i) any litigation commenced against such Party in respect of the
transactions contemplated by this Agreement or any Ancillary Agreement, or (ii)
any material litigation commenced against such Party which would have a Material
Adverse Effect on such Party and its Subsidiaries taken as a whole.

     SECTION 4.06   Further Assurances. Each Party shall each execute and
deliver or cause to be executed and delivered such further instruments of
transfer, assignment and conveyance and take such other action as may be
reasonably required to more effectively carry out the consummation of the
transactions contemplated by this Agreement and the Ancillary Agreements.

     SECTION 4.07   No Solicitation.  (a)  The Company shall not and shall not
authorize or permit any officer, director or employee of, or any investment
banker, attorney or other advisor or representative of, the Company to, (i)
solicit or initiate, or encourage the submission of, any Acquisition Proposal,
or approve or authorize any of the foregoing, or (ii) participate in any
discussions or negotiations regarding, or furnish to any person any information
with respect to, or take any other action to expedite any inquiries or the
making of any proposal that constitutes, or may reasonably be expected to lead
to, any Acquisition Proposal; provided, however, that to the extent required by
                              --------  -------                                
the fiduciary obligations of the Board of Directors of the Company, as
determined in good faith by the Board of Directors based on the advice of
outside counsel, the Company may, (A) in response to an unsolicited request
therefor, furnish information with respect to the Company to any person pursuant
to a customary confidentiality agreement and discuss such information with such
person, (B) upon receipt by the Company of an Acquisition Proposal, following
delivery to Sprint of the notice required pursuant to Section 4.07(b),
participate in negotiations regarding such Acquisition Proposal, and (C) modify
or withdraw the recommendation to accept the Offer contemplated by Section
1.02(a) or its recommendation that the stockholders of the Company vote in favor
of the Company Stockholder Vote Matters as contemplated by Section 1.06(c).

     (b)  The Company shall (i) promptly notify Sprint of (A) the existence of
any request for confidential information with respect to, or the receipt of, any
Acquisition Proposal, (B) any inquiry or discussions with respect to, or which
could reasonably be expected to lead to, any Acquisition Proposal, (C) the
execution of a confidentiality agreement with respect to an Acquisition
Proposal, (D) the furnishing of any information in contemplation of an
Acquisition Proposal, whether or not pursuant to a confidentiality agreement,
(ii) describe the terms and conditions of any Acquisition Proposal in reasonable
detail, and (iii) furnish to Sprint all information made available to any Person
making the Acquisition, or contemplating the making of an Acquisition Proposal,
subject to a customary confidentiality agreement.

     (c)  The Company shall not take any action that would enhance the ability
of any other Person proposing an Acquisition Proposal to obtain the approval of
the Company's stockholders or otherwise consummate such Acquisition Proposal
(including granting any approval pursuant to Section 203 of the DGCL) without
also taking a comparable action that would similarly enhance the ability of
Sprint to obtain any necessary approval of the Company's stockholders of, and
otherwise to consummate, the transactions contemplated by this Agreement and the
Ancillary Agreements or

                                       34
<PAGE>
 
an alternative transaction initiated by Sprint and concurrently withdrawing any
impediments thereto that do not similarly impede such other Person.

     (d)  Nothing contained in this Section 4.07 shall prohibit the Company from
taking and disclosing to its stockholders a position contemplated by Rule 14e-2
under the Exchange Act.

     SECTION 4.08   Efforts Regarding Outstanding Warrants and Other Dilutable
Securities. Prior to the Closing, the Company will use its commercially
reasonable efforts to cause each of the Warrants and other Dilutable Securities
of the Company outstanding on the Closing Date to be amended or otherwise
modified so that such Warrants and other Dilutable Securities would be
thereafter only convertible into, exchangeable for or give the right to acquire
a number of shares of Newco Common Stock equal to the number of shares of Common
Stock into which such are convertible, exchangeable or exercisable.  The Company
shall, at any time reasonably requested by Sprint, update Sprint with respect to
(i) any warrants or other Dilutable Securities of the Company that will be
convertible into, exchangeable for, or given the right to acquire Common Stock
or other voting securities of the Company after the Merger, and (ii) the
Company's progress in obtaining amendments or modifications to each of the
agreements and/or instruments governing and/or evidencing such warrants and/or
Dilutable Securities in order to ensure that such warrants and/or Dilutable
Securities will be convertible into, exchangeable for, or given the right to
acquire solely the same respective number of shares of Newco Common Stock after
the Merger.

                                   ARTICLE V

                             ADDITIONAL AGREEMENTS

                                       35
<PAGE>
 
     SECTION 5.01   Reasonable Efforts; Notification.  (a)  Upon the terms and
subject to the conditions set forth in this Agreement, each of the Parties shall
use all commercially reasonable 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, in the most expeditious manner practicable, the transactions
contemplated by this Agreement and the Ancillary Agreements, including (i) the
obtaining of all necessary actions or nonactions, waivers, consents and
approvals from Governmental Entities and the making of all necessary
registrations and filings (including filings with Governmental Entities, 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 Entity,
(ii) the obtaining of all necessary consents, approvals or waivers from third
parties, (iii) the defending of any lawsuits or other legal proceedings, whether
judicial or administrative, challenging this Agreement or any of the Ancillary
Agreements or the consummation of the transactions contemplated by this
Agreement or the Ancillary Agreements, including seeking to have any stay or
temporary restraining order entered by any court or other Governmental Entity
vacated or reversed, and (iv) the execution and delivery of any additional
instruments necessary to consummate the transactions contemplated by, and to
fully carry out the purposes of, this Agreement and the Ancillary Agreements.
In connection with and without limiting the foregoing, the Company, Newco and
their respective Boards of Directors shall (i) take all action requested by
Sprint or Sprint L.P. reasonably necessary so that no state takeover statute of
the States of California or Delaware or similar statute or regulation in such
states is or becomes applicable to this Agreement, the Ancillary Agreements or
any transaction contemplated by this Agreement or the Ancillary Agreements and
(ii) if any state takeover statute of the States of California or Delaware or
similar statute or regulation in such states becomes applicable to this
Agreement, any Ancillary Agreement or any transaction contemplated by this
Agreement or any Ancillary Agreement, take all action reasonably requested by
Sprint or Sprint L.P. and within the Company's or Newco's power to permit the
transactions contemplated by this Agreement and the Ancillary Agreements to be
consummated as promptly as practicable on the terms contemplated by this
Agreement and the Ancillary Agreements and otherwise take such actions as are
reasonably requested by Sprint or Sprint L.P. and within the Company's or
Newco's power to minimize the effect of such statute or regulation on the
transactions contemplated by this Agreement and the Ancillary Agreements.
Notwithstanding the foregoing, the Board of Directors of the Company shall not
be prohibited from taking any action permitted by Section 4.07.

     (b)  Each Party shall give prompt notice to the other parties, of (i) any
representation or warranty made by it contained in this Agreement or any
Ancillary Agreement that is qualified as to materiality becoming untrue or
inaccurate in any respect, subject to such qualification, or any such
representation or warranty that is not so qualified becoming untrue or
inaccurate in any material respect or (ii) the failure of that Party to comply
with or satisfy in any material respect any covenant, condition or agreement to
be complied with or satisfied by it under this Agreement or any Ancillary
Agreement (including the Knowledge of Sprint of any circumstance or condition
that could reasonably be expected to render Sprint to be unable to satisfy the
condition set forth in Section 2.03(e)); provided, however, that no such
                                         --------  -------              
notification shall affect the representations, warranties, covenants or
agreements of the Parties or the conditions to the obligations of the Parties
under this Agreement or the Ancillary Agreements.

                                       36
<PAGE>
 
     SECTION 5.02   Fees and Expenses.  Except as provided below, all fees and
expenses incurred in connection with the Offer, this Agreement and the
transactions contemplated by this Agreement and the Ancillary Agreements shall
be paid by the Party incurring such fees or expenses, whether or not the Offer,
the sale of the Convertible Preferred Stock or the Convertible Notes, or the
other transactions contemplated by this Agreement or any Ancillary Agreement on
the terms contemplated hereby or thereby is consummated; provided, however, that
                                                         --------  -------      
one-half of the reasonable out-of-pocket expenses incurred by the Company in
preparing the Proxy Statement and S-4, printing and mailing the Proxy Statement,
the SEC filing fees for the S-4 and in holding the Special Meeting shall be paid
by Sprint.

     SECTION 5.03   Stockholder Litigation. The Company shall give Sprint prompt
notice of any stockholder litigation against the Company and its directors
relating to the transactions contemplated by this Agreement and the Ancillary
Agreements; provided, however, that no settlement of any such litigation shall
            --------  -------
be agreed to until the Company has consulted with Sprint.

     SECTION 5.04   Nasdaq Listing.  The Company shall use its best efforts to
cause the Newco Common Stock to be included in The Nasdaq National Market after
the Closing.

     SECTION 5.05   Confidentiality.  Prior to the date of this Agreement, and
between the date of this Agreement and until the earlier of the Closing Date or
the termination of this Agreement, and thereafter in accordance with the
Ancillary Agreements and the transactions and ongoing business conducted by the
Parties as contemplated hereby and thereby, the Parties have provided, or shall
provide, one another with information which is protected, secret, non-public or
proprietary in nature ("Confidential Information"); provided, however, that the
                                                    --------  -------          
term Confidential Information shall not include information which:  (a) is or
becomes publicly available other than as a result of a disclosure by the
disclosing Party or its representatives, (b) is or becomes available to the
receiving Party on a nonconfidential basis from a source (other than the
disclosing Party or its representatives) which, to the receiving Party's
knowledge after due inquiry, is not prohibited from disclosing such information
to the receiving Party by a legal, contractual or fiduciary obligation to the
disclosing Party, (c) is independently developed by the receiving Party without
use of the Confidential Information, or (d) is already known by the receiving
Party.  Each Party agrees to (i) hold confidential, to protect, and not to
disclose except on a need-to-know basis to its directors, officers, employees,
agents, financial advisors and legal counsel, all Confidential Information
provided to it by any other Party to this Agreement or any Ancillary Agreement,
and except as otherwise required by Law or legal process, or (ii) to use
Confidential Information for any purpose other than to the extent necessary to
evaluate and enforce its rights under this Agreement and any Ancillary
Agreement.  The covenants set forth in this Section 5.05 shall remain in effect
until the Closing Date and so long thereafter as any Ancillary Agreement remains
in effect.  If this Agreement is terminated prior to consummation of the
transactions contemplated hereby or by any Ancillary Agreement, then each Party
shall return all documents and other material, whether or not confidential,
provided to it pursuant to this Agreement by or on behalf of any other Party to
this Agreement.  The foregoing obligations of confidentiality, non-disclosure
and limited use shall be in effect for a period of three years beyond such
termination. During such period, none of the Parties shall use any of the
Confidential Information received from 

                                       37
<PAGE>
 
any other Party to the detriment of such other Party. Notwithstanding any other
provision of this Section 5.05, each Party shall have the right to retain and to
use any Confidential Information to the extent necessary to evaluate and enforce
its rights under this Agreement or any Ancillary Agreement.

     SECTION 5.06   No Acceleration of Options or Termination Payments.  (a) The
Company shall, prior to the Closing, amend, or cause to be amended, (i) the 1995
Stock Option Plan and, if necessary, any options granted thereunder, (ii) the
employment agreement with Charles G. Betty and any other employment agreements
with officers, directors or employees of the Company, (iii) any other plan,
agreement, arrangement or understanding giving rise to any options, warrants or
any other rights to purchase capital stock of the Company are granted or issued,
(iv) any plan, agreement, arrangement or understanding pursuant to which any
termination or severance pay or other compensation of any officer, director or
employee of the Company is or may become due, in order, in any such case, to
ensure that none of the transactions contemplated by this Agreement or any of
the Ancillary Agreements (including, without limitation, conversion of the
Convertible Preferred Stock and/or the Convertible Notes) will, constitute a
"change of control," or any similar event or occurrence within the meaning of
any such term or any similar term contained in any of the foregoing, or
otherwise cause or result in the acceleration of the vesting of such options or
rights or of the time at which such options or rights are permitted to be
exercised, or the acceleration of the right to receive termination or severance
pay or other compensation, in any such case either alone or together with any
other event or occurrence, such as the termination or constructive termination
of employment of any officer, director or employee of the Company.

     SECTION 5.07   Amortization and Writeoffs of Goodwill and Assets.  The
Company and Newco agree that none of the goodwill, or other tangible or
intangible assets acquired pursuant to, the transactions contemplated by this
Agreement or any Ancillary Agreement shall be amortized or written off other
than on a straight line basis of equal amounts taken over a period of no less
than 24 months commencing with the Closing Date, except for any such amount
which, individually or in the aggregate, is not material.

     SECTION 5.08   Maintaining SIP Subscribers at Newco.  The Company and Newco
agree that all of the SIP Subscribers assigned to Newco at the Closing shall be
maintained as customers of Newco and not the Company for a period of at least
two years after the Closing Date (unless such customers terminate their customer
agreement with Newco on their own initiative); provided, however, that such
                                               --------  -------           
customers may be serviced by the Company pursuant to an agreement to do so
containing terms and conditions as would be obtained by Persons dealing at arms
length.  During the period commencing on the Closing Date and continuing until
the 31st day after the Closing Date, Newco shall not (i) discontinue or modify,
or publicly announce the discontinuance or modification, of the current $5.00
credit program (i.e., whereby SIP Subscribers are entitled to a $5.00 credit
upon certain circumstances set forth in the terms and conditions governing such
program), or (ii) make any change or modification to any other term or condition
of the SIP Agreement which is reasonably likely to result in a reduction in the
number of SIP Subscribers within the aforementioned time period.

     SECTION 5.09   Certification of SIP Subscribers.

                                       38
<PAGE>
 
          (a)  On or before the 15th day following the Closing Date, Sprint L.P.
     shall prepare and deliver to the Company a schedule certified by a duly
     authorized executive officer showing (i) the number and identity of the SIP
     Subscribers assigned to the Company at Closing pursuant to Section 1.03(ii)
     who have paid pursuant to the SIP Agreements at any time on or prior to the
     Closing Date and (ii) the number and identity of SIP Subscribers assigned
     to the Company at Closing pursuant to Section 1.03(ii) who had not paid
     pursuant to the SIP Agreements at any time on or prior to the Closing Date.
     For purposes of this Section 5.09, a SIP Subscriber shall be deemed to have
     paid on the date of receipt of payment or upon which the subscriber's
     credit card is billed by Sprint L.P., the Company or Newco, as the case may
     be.

          (b)  On or before the 45th day following the Closing Date, Newco shall
     prepare and deliver to Sprint L.P. a schedule (the "SIP True-Up
     Certificate") certified by its chief financial officer showing (i) the
     number and identity of the SIP Subscribers who have paid pursuant to SIP
     Agreements at any time on or prior to the 31st day after the Closing Date
     ("Paid SIP Subscribers") and (ii) the number and identity of the SIP
     Subscribers who have not paid pursuant to SIP Agreements at any time on
     prior to the 31st day after the Closing Date. The Parties agree to
     cooperate and to provide such further information as may be reasonably
     requested to verify the matters covered by the SIP True-Up Certificate,
     with such mutually agreed upon number of Paid SIP Subscribers referred to
     as the "Final Number of Paid SIP Subscribers."

          (c)  If the Final Number of Paid SIP Subscribers is less than 130,000,
     then Sprint L.P. shall forfeit to Newco a number of shares of Convertible
     Preferred Stock equal to the product of (i) five shares of Convertible
     Preferred Stock, times (ii) 130,000 minus the Final Number of Paid SIP
     Subscribers, with such product referred to as the "Number of Forfeited
     Shares of Convertible Preferred Stock."  Sprint L.P. shall deliver to Newco
     the stock certificate evidencing its shares of Convertible Preferred Stock
     originally issued to it on the Closing Date (the "Number of Original Shares
     of Convertible Preferred Stock"), together with duly executed stock power
     transferring to Newco the Number of Forfeited Shares of Convertible
     Preferred Stock and Newco shall thereupon issue to Sprint L.P. a balance
     certificate evidencing a number of shares of Convertible Preferred Stock
     equal to the difference between the Number of Original Shares of
     Convertible Preferred Stock and the Number of Forfeited Shares of
     Convertible Preferred Stock.


                                  ARTICLE VI

                       TERMINATION, AMENDMENT AND WAIVER

     SECTION 6.01   Termination.  (a)  Anything contained herein to the contrary
notwithstanding, this Agreement may be terminated, and the transactions
contemplated hereby or by any Ancillary Agreement abandoned, at any time prior
to the Closing Date:

                                       39
<PAGE>
 
          (i)    by mutual written consent of all of the Parties;

          (ii)   by any of the Parties if the Offer shall not have been
     consummated on or before the Expiration Date;

          (iii)  by Sprint and Sprint L.P. if any of the conditions set forth in
     Sections 2.01 or 2.02 shall have become incapable of fulfillment, and shall
     not have been waived by Sprint and Sprint L.P.; or

          (iv)   by the Company, Newco and Newco Sub if (x) any of the
     conditions set forth in Sections 2.01 or 2.03 shall have become incapable
     of fulfillment, and shall not have been waived by the Company, Newco and
     Newco Sub, or (y) Sprint shall have failed to commence the Offer within
     five business days following the date of initial public announcement of the
     Offer;

provided, however, that the Party seeking termination pursuant to clause (ii),
- --------  -------                                                             
(iii) or (iv) is not in material breach of any of its representations,
warranties, covenants or agreements contained in this Agreement or any Ancillary
Agreement.

     (b)  In the event of termination by any of the Parties pursuant to this
Section 6.01, written notice thereof shall forthwith be given to the other
Parties and the transactions contemplated by this Agreement and the Ancillary
Agreements shall be terminated, without further action by any Party.

     SECTION 6.02   Effect of Termination.  Each Party's right of termination
under Section 6.01 is in addition to any other rights it may have under this
Agreement, any Ancillary Agreement or otherwise, and the exercise of a right of
termination will not be an election of remedies.  If this Agreement is
terminated pursuant to Section 6.01 (other than those obligations set forth in
Sections 5.02 and 5.05 which shall continue to apply upon termination of this
Agreement prior to the consummation of the transactions contemplated by this
Agreement or by any Ancillary Agreement, all further obligations of the Parties
under this Agreement and any Ancillary Agreement will terminate; provided,
                                                                 -------- 
however, that if this Agreement is terminated by a Party because of fraud or a
- -------                                                                       
willful and material breach of the Agreement or any Ancillary Agreement by any
other Party or because one or more of the conditions to the terminating party's
obligations under this Agreement is not satisfied as a result of any other
Party's fraud or willful and material failure to comply with its obligations
under this Agreement or any Ancillary Agreement, the terminating Party's right
to pursue all legal remedies will survive such termination unimpaired.


                                  ARTICLE VII

                                 MISCELLANEOUS

                                       40
<PAGE>
 
     SECTION 7.01   Notices.  Unless otherwise provided herein, any notice,
request, waiver, instruction, consent or document or other communication
required or permitted to be given by this Agreement shall be effective only if
it is in writing and (a) delivered by hand or sent by certified mail, return
receipt requested, (b) if sent by a nationally-recognized overnight delivery
service with delivery confirmed, or (c) if telexed or telecopied, with receipt
confirmed as follows:

          The Company:                  3100 New York Drive
                                        Pasadena, California 91107
                                        Attn:  President and CEO
                                        Telecopy No.:  (626) 296-4161

          with a copy to:               Hunton & Williams
                                        NationsBank Plaza, Suite 4100
                                        600 Peachtree Street, N.E.
                                        Atlanta, Georgia  30308-2216
                                        Attn: Scott M. Hobby, Esq.
                                        Telecopy No.: (404) 888-4190

          Newco and Newco Sub:          3100 New York Drive
                                        Pasadena, California 91107
                                        Attn:  President and CEO
                                        Telecopy No.:  (626) 296-4161

          with a copy to:               Hunton & Williams
                                        NationsBank Plaza, Suite 4100
                                        600 Peachtree Street, N.E.
                                        Atlanta, Georgia  30308-2216
                                        Attn: Scott M. Hobby, Esq.
                                        Telecopy No.: (404) 888-4190

          Sprint:                       Sprint Corporation
                                        2330 Shawnee Mission Parkway
                                        Westwood, Kansas 66205
                                        Attn:  Chief Financial Officer
                                        Telecopy No.:  (913) 624-8426

          with a copy to:               Sprint Corporation
                                        2330 Shawnee Mission Parkway
                                        Westwood, Kansas 66205
                                        Attn:  Corporate Secretary
                                        Telecopy No.:  (913) 624-8233
 
          with an additional copy to:   Stinson, Mag & Fizzell, P.C.
                                        1201 Walnut, Suite 2800
                                        P.O. Box 419251

                                       41
<PAGE>
 
                                        Kansas City, Missouri  64141-6251
                                        Attn:  John A. Granda, Esq.
                                        Telecopy No.: (816) 691-3495

The Parties shall promptly notify each other of any change in their respective
addresses or facsimile numbers or of the Person or office to receive notices,
requests or other communications under this Section 7.02.  Notice shall be
deemed to have been given as of the date when so personally delivered, when
actually delivered by the U.S. Postal Service at the proper address, the next
day when delivered during business hours to an overnight delivery service
properly addressed or when receipt of a telex or telecopy is confirmed, as the
case may be, unless the sending party has actual Knowledge that such notice was
not received by the intended recipient.

     SECTION 7.02   Entire Agreement.  This Agreement and, upon execution by all
Parties thereto, the Ancillary Agreements, together with the respective
Schedules and Exhibits hereto and thereto, embody the entire agreement and
understanding of the Parties in respect to the matters contemplated hereby and
thereby and supersede and render null and void all other prior agreements and
understandings, written and oral, with respect to the subject matters hereof and
thereof, provided that this provision shall not abrogate any other written
         --------                                                         
agreement among the Parties executed simultaneously with this Agreement.  No
Party shall be liable or bound to any other Party in any manner by any promises,
conditions, representations, warranties, covenants, agreements and
understandings, except as specifically set forth herein or therein.

     SECTION 7.03   Waiver, Amendment, Etc. Except as otherwise permitted in
this Agreement, this Agreement may not be amended or supplemented, unless set
forth in a writing signed by, and delivered to, all the Parties.

     Except as otherwise permitted in this Agreement, the terms or conditions of
this Agreement may not be waived unless set forth in a writing signed by the
Party entitled to the benefits thereof. No waiver of any of the provisions of
this Agreement shall be deemed or shall constitute a waiver of such provision at
any time in the future or a waiver of any other provision hereof.  The rights
and remedies of the Parties are cumulative and not alternative.  Except as
otherwise provided in this Agreement, neither the failure nor any delay by any
Party in exercising any right, power or privilege under this Agreement, or any
of the other Ancillary Agreements or the documents referred to in this Agreement
or therein will operate as a waiver of such right, power or privilege, and no
single or partial exercise of any such right, power or privilege will preclude
any other or further exercise of such right, power or privilege or the exercise
of any other right, power or privilege.

     SECTION 7.04   Successors and Assigns. Neither this Agreement nor any of
the rights, interests or obligations under this Agreement shall be assigned or
transferred, in whole or in part, by any of the Parties without the prior
written consent of the other Parties; provided, however, that such assignment or
                                      --------  -------
transfer may be made by (i) Sprint to any of its Affiliates, or (ii) pursuant to
any merger or sale of substantially all of the assets or stock of Sprint or such
Affiliates (or any transaction having such effect) that is pursuant to an
agreement entered into after the Closing Date. Subject to the

                                       42
<PAGE>
 
preceding sentence, this Agreement will be binding upon, inure to the benefit
of, and be enforceable by, the parties and their respective successors and
assigns.

     SECTION 7.05   Governing Law.  This Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware, without regard
to conflict of laws principles.

     SECTION 7.06   Severability.  If any term or provision of this Agreement or
the Ancillary Agreements or the application thereof to either party or set of
circumstances shall, in any jurisdiction and to any extent, be finally held
invalid or unenforceable, such term or provision shall only be ineffective as to
such jurisdiction, and only to the extent of such invalidity or
unenforceability, without invalidating or rendering unenforceable any other
terms or provisions of this Agreement or the Ancillary Agreements or under any
other circumstances, and the parties shall negotiate in good faith a substitute
provision which comes as close as possible to the invalidated or unenforceable
term or provision, and which puts each party in a position as nearly comparable
as possible to the position it would have been in but for the finding of
invalidity or unenforceability, while remaining valid and enforceable.

     SECTION 7.07   Counterparts.  This Agreement may be executed in one or more
counterparts each of which when so executed and delivered shall for all purposes
be deemed to be an original but all of which, when taken together, shall
constitute one and the same Agreement.

     SECTION 7.08   Headings.  The table of contents, captions and headings used
in this Agreement or any Ancillary Agreements are inserted for convenience only
and shall not be deemed to constitute part of this Agreement or any Ancillary
Agreements or to affect the construction or interpretation hereof.

     SECTION 7.09   No Third-Party Beneficiaries.  Nothing in this Agreement or
any Ancillary Agreements, express or implied, shall create or confer upon any
Person (including but not limited to any employees), other than the Parties or
their respective successors and permitted assigns, any legal or equitable
rights, remedies, obligations, liabilities or claims under or with respect to
this Agreement or any Ancillary Agreements, except as expressly provided herein.

     SECTION 7.10   Interpretation.  (a)  Unless specifically stated otherwise,
references to Articles, Sections, Exhibits and Schedules refer to Articles,
Sections, Exhibits and Schedules in this Agreement.  References to "includes"
and "including" mean "includes without limitation" and "including without
limitation."

     (b)  Each Party is a sophisticated legal entity that was advised by
experienced counsel and, to the extent it deemed necessary, other advisors in
connection with this Agreement and the Ancillary Agreements.  Accordingly, each
Party hereby acknowledges that no Party has relied or will rely in respect of
this Agreement or any Ancillary Agreements or the transactions contemplated
hereby or thereby upon any document or written or oral information previously
furnished to or discovered by it or its representatives, other than this
Agreement or any Ancillary Agreements or the documents and instruments delivered
at the Closing.

                                       43
<PAGE>
 
     (c)  No provision of this Agreement or any Ancillary Agreement shall be
interpreted in favor of, or against, any of the Parties by reason of the extent
to which any such Party or its counsel participated in the drafting thereof or
by reason of the extent to which any such provision is inconsistent with any
prior draft hereof or thereof.

     SECTION 7.11   Inclusion of Information in Schedules.  The inclusion of any
information in any disclosure schedule (i) shall not be deemed an admission that
any such information is material for purposes of the representation and warranty
to which it relates or any other representation and warranty or for any other
purpose related to the Agreement or any Ancillary Agreement or the transactions
contemplated hereby or thereby, including, without limitation, for purposes of
any covenants, closing conditions or any other remedies the Parties may have,
and (ii) shall not be used or interpreted in any manner to create a standard of
materiality for any such purpose.

     SECTION 7.12   Exclusive Jurisdiction and Consent to Service of Process.
The Parties agree that any Action arising out of or relating to this Agreement,
the Ancillary Agreements or the transactions contemplated hereby or thereby
shall be brought by the Parties only in a Delaware state court or a federal
court sitting in that state, which shall be the exclusive venue of any such
Action. Each Party waives any objection which such party may now or hereafter
have to the laying of venue of any such Action, and irrevocably consents and
submits to the jurisdiction of any such court (and the appropriate appellate
courts) in any such Action. Any and all service of process and any other notice
in any such Action shall be effective against such Party when transmitted in
accordance with Section 7.01. Nothing contained herein shall be deemed to affect
the right of any Party to serve process in any manner permitted by Law.

     SECTION 7.13   Amendment.  No amendment, modification or alteration of the
terms or provisions of this Agreement or any Ancillary Agreement, including any
Schedules and Exhibits hereto or thereto, shall be binding unless the same shall
be in writing and duly executed by the Party against whom such amendment,
modification or alteration is sought to be enforced.

     SECTION 7.14   Survival.  Except for the covenants or agreements set forth
in Article V or any other covenants or agreements contained in this Agreement or
any Ancillary Agreements which shall continue after the Closing, the
representations, warranties, agreements and covenants in this Agreement, or in
the Schedules, Exhibits hereto, and in certificates delivered at the Closing,
shall not survive after the Closing; provided, however, that with respect to
                                     --------  -------                      
claim(s) for fraud and/or willful and material breach(es) hereof, all such
representations, warranties, agreements and covenants shall survive the Closing,
and continue for 24 months, except for any agreement or covenant which by its
terms continues in effect for a longer or shorter time period, and shall in no
way be affected by any investigation of the subject matter thereof made by or on
behalf of any Party or any information capable of being acquired by any Party.

     SECTION 7.15   WAIVER OF JURY TRIAL.  THE COMPANY, NEWCO, NEWCO SUB, SPRINT
AND SPRINT L.P. HEREBY IRREVOCABLY AND 

                                       44
<PAGE>
 
UNCONDITIONALLY WAIVE ANY RIGHT THAT THEY MAY HAVE TO A TRIAL BY JURY IN ANY
ACTION INVOLVING, DIRECTLY OR INDIRECTLY, ANY MATTER (WHETHER SOUNDING IN TORT,
CONTRACT OR OTHERWISE) IN ANY WAY ARISING OUT OF, RELATED TO, OR CONNECTED WITH
THIS AGREEMENT OR ANY ANCILLARY AGREEMENT OR THE RELATIONSHIP ESTABLISHED
HEREUNDER OR THEREUNDER.


                                  ARTICLE VII

                                  DEFINITIONS

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

          "Acquisition Proposal" means any proposal for a tender or exchange
     offer, a merger, consolidation or other business combination,
     recapitalization, liquidation, dissolution or similar transaction involving
     a Party or any proposal or offer to acquire in any manner, directly or
     indirectly, a material equity interest in, or a material amount of voting
     securities (with the acquisition of beneficial ownership of 15% or more of
     a Party's voting securities being deemed to be material for this purpose)
     or assets of, a Party, other than the transactions contemplated by this
     Agreement and the Ancillary Agreements.

          "Action" means any action, suit, arbitration, inquiry, proceeding or
     investigation by or before any Government Entity.

          "Affiliate" means, with respect to any Person, or any other Person
     controlling, controlled by, or under common control with such Person.  For
     purposes of this Agreement, the term "control" (including, with correlative
     meanings, the terms "controlled by" and "under common control with" as used
     with respect to any Person) means the possession, directly or indirectly,
     of the power to direct or cause the direction of the management and
     policies of such Person whether through ownership of voting securities, by
     contract or otherwise.

          "Agreement" means this Agreement, together with the Schedules and
     Exhibits hereto.

          "Agreement and Plan of Merger" means the Agreement and Plan of Merger
     among Newco, Newco Sub and the Company, dated as of the date hereof,
     setting forth, inter alia, the terms and conditions of the merger of Newco
                    ----- ----                                                 
     Sub into the Company, a copy of which is attached to the Agreement as
     Exhibit F.

          "Agreement to Vote" means the Agreement To Vote Stock, a copy of which
     is attached to the Agreement as Exhibit J, executed in favor of Sprint by
     Voting Stockholders in connection with the Offer and the other transactions
     contemplated hereby and by the Ancillary Agreements.

                                       45
<PAGE>
 
          "Agreement to Vote and Tender" means the Agreement to Vote and Tender
     Stock, a copy of which is attached to the Agreement as Exhibit K, executed
     in favor of Sprint by the Tendering Stockholders in connection with the
     Offer and the other transactions contemplated hereby and by the Ancillary
     Agreements.

          "Ancillary Agreements" means any and all of the Certificate of
     Designation, the Governance Agreement, the Master Assignment, the Marketing
     Agreement, the Network Services Agreement, the Registration Rights
     Agreement, the Credit Agreement, the Stockholders Agreement, the Agreement
     and Plan of Merger, the Agreement to Vote and the Agreement to Vote and
     Tender.

          "Benefit Plan" means pension, retirement, savings, profit sharing,
     deferred compensation, incentive compensation, stock option, severance or
     termination pay, medical, dental, life or other insurance, disability or
     other written employee benefit plan, program, agreement or arrangement
     maintained, sponsored or contributed to by the Company, whether covering
     employees of the Company, former employees of the Company, or directors or
     former directors of the Company (including, but not limited to, any
     "Employee Benefit Plan," as defined in Section 3(3) of ERISA).

          "Certificate of Designation" shall have the meaning set forth in
     Section 1.03.

          "Closing" shall have the meaning set forth in Section 1.09.

          "Closing Date" shall have the meaning set forth in Section 1.09.

          "Code" means the Internal Revenue Code of 1986, as amended.

          "Common Stock" means the common stock, par value $.01 per share, of
     the Company.

          "Company Filed SEC Documents" shall mean the SEC Documents of the
     Company filed and publicly available prior to the date of this Agreement.

          "Company's Knowledge" means the actual knowledge of any of the
     executive officers and directors (excluding John W. Sidgmore) of Company
     without any duty to inquire or attribution of knowledge from any other
     Person to the persons in such capacities.

          "Company Stockholder Vote Matters" shall have the meaning set forth in
     Section 1.06(b).

          "Confidential Information" shall have the meaning set forth in Section
     5.05.

          "Contract" means all contracts, agreements, instruments, leases,
     licenses, commitments and arrangements.

                                       46
<PAGE>
 
          "Convertible Debt Financing" shall have the meaning set forth in the
     fifth WHEREAS paragraph of the preamble to this Agreement.

          "Convertible Notes" shall have the meaning set forth in the fifth
     WHEREAS paragraph of the preamble to this Agreement.

          "Convertible Preferred Stock" means the Series A Convertible Preferred
     Stock, par value $.01 per share, of Newco.

          "Credit Agreement" means the Credit Agreement dated as of the date
     hereof among Sprint, Newco and the Company whereby Sprint agrees to provide
     Newco and the Company, as co-borrowers, with the Convertible Debt
     Financing, a copy of which is attached to the Agreement as Exhibit E.

          "DGCL" means the Delaware General Corporate Law, title 8 of the
     Delaware Code.

          "Dilutable Securities" shall have the meaning set forth in Section
     3.01(c).

          "Director Stock Options" shall have the meaning set forth in Section
     3.01(c).

          "Dollars" or "$" means lawful currency of the United States.

          "Employee Stock Options" shall have the meaning set forth in Section
     3.01(c).

          "Encumbrance" means any charge, claim, community property interest,
     equitable interest Lien, Tax lien, option, pledge, security interest, right
     of first refusal or restriction of any kind, including any restriction on
     transfer, receipt of income or exercise of any other attribute of
     ownership.

          "Environment" means soil, land surface or subsurface strata, surface
     waters (including navigable waters, ocean waters, streams, ponds, drainage
     basins, and wetlands), groundwaters, drinking water supply, stream
     sediments, ambient air (including indoor air), plant and animal life, and
     any other environmental medium or natural resource.

          "Environmental Law" means any Law that requires or relates to
     protection of human health or the Environment.

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

          "Exchange Act" means the Securities and Exchange Act of 1934, as
     amended, and the rules and regulations promulgated thereunder as in effect
     at the applicable time.

          "Expiration Date" shall have the meaning set forth in Section 1.01.

                                       47
<PAGE>
 
          "GAAP" shall mean Generally Accepted Accounting Principles, as in
     effect on the date of this Agreement.  All references herein to financial
     statements prepared in accordance with GAAP shall mean in accordance with
     GAAP consistently applied throughout the periods to which reference is
     made.

          "Governance Agreement" shall mean the Governance Agreement, dated as
     of the date hereof, among Sprint, Sprint L.P., the Company and Newco, a
     copy of which is attached to the Agreement as Exhibit G.

          "Governmental Entity" means any federal, state, foreign or local
     government, any of its subdivisions, administrative agencies, authorities,
     commissions, boards or bureaus, any federal, state, foreign or local court
     or tribunal and any arbitrator.

          "Hazardous Activity" means the distribution, generation, handling,
     importing, management, manufacturing, processing, production, refinement,
     release, storage, transfer, transportation, treatment, or use (including
     any withdrawal or other use of groundwater) of Hazardous Materials in, on,
     under, about, or from the facilities or any part thereof into the
     Environment.

          "Hazardous Materials" means any waste or other substance that is
     listed, defined, designated, or classified as, or otherwise determined to
     be, hazardous, radioactive, or toxic or a pollutant or a contaminant under
     or pursuant to any Environmental Law, including any mixture or solution
     thereof, and specifically including petroleum and all derivatives thereof
     or synthetic substitutes therefor and asbestos or asbestos-containing
     materials.

          "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements Act of
     1976, as amended, and the regulations promulgated thereunder.

          "Intellectual Property Assets" includes all marks, patent rights,
     copyrights and trade secrets of the Company.

          "IRS" means the United States Internal Revenue Service.

          "Issuance Percentage Limitation" means the lesser of (a) 20%, or (b)
     the percentage of shares of outstanding Common Stock which if issued, and
     after taking into effect such issuance, would cause the total number of
     shares of Common Stock subject to (i) all irrevocable proxies granted in
     favor of Sprint to vote "for" the Company Stockholder Vote Matters, and
     (ii) votes "for" the Company Stockholder Vote Matters pursuant to
     Agreements to Vote to constitute, in the aggregate, less than 51% of the
     outstanding shares of Common Stock.  For purposes of this definition,
     "outstanding shares of Common Stock" shall be calculated on a fully diluted
     basis, excluding any Dilutable Securities which are not or will not be
     vested or otherwise exercisable on or prior to the Offer Acceptance Time.

                                       48
<PAGE>
 
          "Knowledge" means the actual knowledge of any of the executive
     officers and directors of the Parties without any duty to inquire or
     attribution of knowledge from any other Person to the persons in such
     capacities.

          "Law" means any federal, state, local, municipal, foreign,
     international, multinational, or other judicial or administrative order,
     judgment, decree, constitution, law, ordinance, common law of California
     and Delaware, regulation, statute, or treaty.

          "Lien" means any lien, pledge, security interest or Encumbrance
     whatsoever, mortgage, deed of trust, security interest, retention of title
     agreement, easement, encroachment, condition, reservation, covenant, lis
     pendens lien, claim of lien, adverse claim, or restriction on attributes of
     ownership.

          "Marketing Agreement" means the Marketing and Distribution Agreement,
     dated as of the date hereof, among Sprint, Sprint L.P., Newco and the
     Company, whereby Sprint, Sprint L.P., Newco and the Company agree to
     provide certain cooperation and support to each other in specified
     marketing matters and Sprint L.P. grants Newco the right to utilize certain
     distribution channels of Sprint L.P., a copy of which is attached to the
     Agreement as Exhibit D.

          "Master Assignment" means the Master Assignment and Assumption
     Agreement, dated as of the date hereof, between Sprint L.P. and Newco, by
     which Sprint L.P. grants to Newco all of the right, title and interest of
     Sprint L.P. in and to all agreements with SIP Subscribers and all rights to
     provide Internet access services to the SIP Subscribers after the Closing
     Date and Newco assumes all of the obligations to continue the performance
     of such agreements after the Closing Date, a copy of which is attached to
     the Agreement as Exhibit B.

          "Material Adverse Effect" means any change or effect having a material
     adverse effect (or any development as to which there is a substantial
     likelihood, insofar as can be foreseen, that would have such an effect) on
     the business, properties, assets, condition (financial or otherwise), or
     results of operations of the Company, Newco, Newco Sub, Sprint, Sprint L.P.
     and Sprint's Subsidiaries.

          "Merger" means the merger of Newco Sub into the Company in accordance
     with the terms and conditions set forth in the Agreement and Plan of
     Merger.

          "Minimum Tender Condition" shall have the meaning set forth in Section
     2.01(a).

          "Network Agreement" means the Network Agreement, dated as of the date
     hereof, among Sprint L.P., Newco and the Company, which grants Newco and
     the Company the right to use a minimum and maximum number of ports on
     Sprint L.P.'s long-distance network, along with pricing and other terms set
     forth therein, a copy of which is attached to the Agreement as Exhibit C.

                                       49
<PAGE>
 
          "Newco Common Stock" shall have the meaning set forth in the sixth
     WHEREAS paragraph of the preamble of this Agreement.

          "Offer" shall have the meaning set forth in the second WHEREAS
     paragraph of the preamble to this Agreement.

          "Offer Acceptance Condition" shall have the meaning set forth in
     Section 2.04.

          "Offer Acceptance Time" means the date and time upon which Sprint
     accepts for payment shares of Common Stock pursuant to the Offer.

          "Offer Documents" shall have the meaning set forth in Section 1.01(b).

          "Offer Price" shall have the meaning set forth in the second WHEREAS
     paragraph of the preamble to this Agreement.

          "Ordinary Course of Business" means an action taken by a Person will
     be deemed to have been taken in the "Ordinary Course of Business" only if:

          (a)  such action is consistent with the past practices of such Person
     and is taken in the ordinary course of the normal day-to-day operations of
     such Person; and

          (b)  such action is not required to be authorized by the board of
     directors of such Person (or by any Person or group of Persons exercising
     similar authority);

          "Paid SIP Subscribers" shall have the meaning set forth in Section
5.09(b).

          "Party" means any Person that is a signatory to this Agreement.

          "Permits" shall have the meaning set forth in Section 3.01(l).

          "Person" means any natural person, corporation, partnership, limited
     liability company, trust, unincorporated organization or other entity.

          "Preferred Stock Consideration" shall have the meaning set forth in
     Section 1.03.

          "Proxy Statement" shall have the meaning set forth in Section 1.06(b).

          "Registration Rights Agreement" shall mean the Registration Rights
     Agreement, dated as of the date hereof, among Newco, Sprint and Sprint
     L.P., a copy of which is attached hereto as Exhibit I.

          "Returns" means all tax returns that must be filed with any federal,
     state or local taxing authority.

                                       50
<PAGE>
 
          "S-4" shall have the meaning set forth in Section 1.06(b).

          "SARs" means stock appreciation rights.

          "SEC" means the Securities and Exchange Commission and the staff
     thereof.

          "SEC Documents" shall have the meaning set forth in Section 3.01(e).

          "Securities Act" means the Securities Act of 1933, as amended, and the
     rules and regulations promulgated thereunder as in effect at the applicable
     time.
 
          "Significant Subsidiary" means any Subsidiary of a Party that
     constitutes a significant subsidiary within the meaning of Rule 1-02 of
     Regulation S-X of the SEC.

          "SIP Agreements" means the agreements between Sprint L.P. and the SIP
     Subscribers governing the receipt of Internet access from Sprint L.P.

          "SIP Subscriber" shall mean a registered customer of Sprint L.P.'s
     "Sprint Internet Passport" service, regardless of whether on an hourly
     payment plan or a fixed payment plan, and regardless of whether in an
     initial introductory period.

          "Special Meeting" shall have the meaning set forth in Section 1.05(b).

          "Sprint Shares" shall have the meaning set forth in Section 3.03(g)

          "Stock Equivalents" shall have the meaning set forth in Section
     3.01(c).

          "Stockholders Agreement" means the Stockholders Agreement, dated as of
     the date hereof, among Sprint and certain stockholders of the Company, a
     copy of which is attached to the Agreement as Exhibit H.

          "Subsidiary" shall mean a Person, the equity of which is at least 50%
     owned by another Person.

          "Surviving Corporation" shall have the meaning set forth in Section
     1.05(a).

          "Tax" or "Taxes" means all income, profits, franchise, gross receipts,
     capital, sales, use, withholding, value added, ad valorem, transfer,
     employment, social security, disability, occupation, property, severance,
     production, excise and other taxes, duties and similar governmental charges
     and assessments imposed by or on behalf of any Governmental Entity
     (including interest and penalties thereon).

                                       51
<PAGE>
 
          "Tendering Stockholders" means the holders of Common Stock who are
     identified in Schedule 1 to the Agreement to Vote and Tender.

          "Threatened" means any demand or statement that has been made in
     writing that would lead a prudent person to conclude that a claim,
     proceeding, dispute, Action, or other matter is likely to be asserted,
     commenced, taken, or otherwise pursued in the future.

          "Unaudited Balance Sheet" means the Unaudited Consolidated Balance
     Sheet of the Company dated at the Unaudited Balance Sheet Date.

          "Unaudited Balance Sheet Date" means September 30, 1997.

          "Voting Stockholders" means the holders of Common Stock who are
     identified in Schedule 1 to the Agreement to Vote.

                                       52
<PAGE>
 
     IN WITNESS WHEREOF, the Parties have caused their respective duly
authorized officers to execute this Agreement as of the day and year first above
written.

                                    SPRINT CORPORATION

                                        By: /s/ Theodore H. Schell 
                                            ------------------------------------
                                              Name: Theodore H. Schell
                                              Title: Vice President - Strategic
                                                     Planning and Corporate 
                                                     Development

                                    SPRINT COMMUNICATIONS COMPANY L.P.

                                    By:  US Telecom, Inc., General Partner.


                                        By: /s/ Don A. Jensen 
                                            ------------------------------------
                                              Name: Don A. Jensen
                                              Title: Vice President and 
                                                     Secretary

                                    EARTHLINK NETWORK, INC.

                                        By: /s/ Charles G. Betty
                                            ------------------------------------
                                              Name: Charles G. Betty
                                              Title: President & CEO

                                    DOLPHIN, INC.

                                        By: /s/ Charles G. Betty
                                            ------------------------------------
                                              Name: Charles G. Betty
                                              Title: President & CEO
 
                                    DOLPHIN SUB, INC.


                                        By: /s/ Charles G. Betty
                                            ------------------------------------
                                              Name: Charles G. Betty
                                              Title: President & CEO




                    SIGNATURE PAGE FOR INVESTMENT AGREEMENT

                                       53





<PAGE>
                                                                    
                                                              EXHIBIT NO. (C)(2)

                                                                  EXECUTION COPY


          THIS GOVERNANCE AGREEMENT, dated as of February 10, 1998 (this
"Agreement"), is entered into by and among SPRINT CORPORATION, a Kansas
corporation ("Sprint"), SPRINT COMMUNICATIONS COMPANY L.P., a Delaware limited
partnership ("Sprint L.P."), DOLPHIN, INC., a Delaware corporation ("Newco"),
and EARTHLINK NETWORK, INC., a Delaware corporation (the "Company").

          WHEREAS, the respective Boards of Directors of Sprint and the Company
have determined to enter into a strategic relationship in the area of Internet
access and related services and Sprint will make investments in Newco and the
Company in connection with the Merger (as defined below) of Newco Sub, Inc., a
Delaware corporation ("Newco Sub"), and the Company in order to enhance the
capabilities for growth and financial and strategic success;

          WHEREAS, pursuant to an Investment Agreement, dated as of February 10,
1998, among Sprint, Sprint L.P., the Company, Newco and Newco Sub (the
"Investment Agreement"), Sprint proposes to make a tender offer (as it may be
amended from time to time as permitted under the Investment Agreement, with the
Company's consent, if required under the Investment Agreement, the "Tender
Offer") to purchase 1,250,000 shares of Common Stock for an aggregate cash
consideration of $56,250,000 and at a price per share of Common Stock of $45 net
to each seller in cash (such price, as may hereafter be changed, the "Tender
Offer Price"), upon the terms and subject to the conditions set forth in the
Investment Agreement; and the Board of Directors of the Company has approved the
Tender Offer and the other transactions contemplated by the Investment Agreement
and is recommending that the Company's stockholders who wish to receive cash for
their shares of Common Stock accept the Tender Offer;

          WHEREAS, immediately following the closing of the Tender Offer, Sprint
L.P. proposes to purchase 4,102,941 shares of Series A Convertible Preferred
Stock, par value $.01 per share of Newco (the "Series A Stock") in exchange for
(i) an aggregate cash consideration of $23,750,000, (ii) the assignment to Newco
of 100% of the Sprint Internet Passport Subscribers, and (iii) entering into a
network agreement whereby Newco and the Company will utilize Sprint L.P.'s long-
distance network under specified terms and conditions;

          WHEREAS, Sprint L.P. will enter into a marketing agreement whereby
Newco and the Company will utilize the Sprint brand under specified terms and
conditions and will, inter alia, have the right to use Sprint L.P. distribution
                     ----- ----                                                
channels under specified terms and conditions and agree to sell certain Sprint
L.P. products;

          WHEREAS, pursuant to the Investment Agreement certain stockholders of
the Company have (i) executed and delivered to Sprint and Sprint L.P. an
Agreement to Vote Stock, (ii) executed and delivered to Sprint and Sprint L.P.
an Agreement to Vote and Tender Stock, and (iii) entered into a Stockholders
Agreement with Sprint and Sprint L.P.;

                                       1
<PAGE>
 
          WHEREAS, Sprint shall provide Newco and the Company, as co-borrowers,
with up to $25 million of Convertible Senior Debt financing on or after the
Closing, with such amount to increase to up to $100 million over time (the
"Convertible Debt Financing"), such indebtedness to be evidenced by one or more
Convertible Senior Promissory Note(s) (the "Convertible Notes), and to be
subject to the terms and conditions of the Credit Agreement;

          WHEREAS, the closing of the acquisition of the Series A Stock and the
other transactions referred to above other than the Tender Offer shall take
place concurrently with the merger of Newco Sub into the Company (the "Merger")
and the conversion of each share of the Company's outstanding Common Stock into
one share of Newco common stock, par value $.01 per share ("Newco Common
Stock"), pursuant to the Merger, in each case upon the terms and subject to the
conditions set forth in any applicable Ancillary Agreement;

          WHEREAS, Sprint, Sprint L.P., the Company and Newco desire to make
certain representations, warranties, covenants and agreements and also to
prescribe various conditions in connection with the transactions contemplated by
this Agreement;

          WHEREAS, Sprint, Sprint L.P., Newco and the Company desire to
establish in this Agreement certain terms and conditions concerning the
corporate governance of Newco, the acquisition and disposition of Equity
Securities by the Affiliated Equity Holders, the rights of Sprint to make offers
to purchase all of the outstanding securities of Newco not owned by Affiliated
Equity Holders and the rights of the Board of Directors of Newco to receive and
entertain offers to effect Business Combinations, all as more particularly
described herein; and

          WHEREAS, Sprint and Sprint L.P. are prepared to ensure that the voting
agreements made by each of them pursuant to this Agreement are fulfilled by
giving the Company and Newco, or either of them, an Irrevocable Proxy (coupled
with an interest).

          NOW, THEREFORE, in consideration of the mutual promises and agreements
contained herein and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto, intending to
be legally bound, hereby agree as follows:

                                   ARTICLE I

                                  DEFINITIONS
                                  -----------

          SECTION 1.01.  Definitions.  As used in this Agreement, the following
                         -----------                                           
terms shall have the following meanings:

          "Acquisition Proposal" means any proposal for a tender or exchange
           --------------------                                             
offer, a merger, consolidation, share exchange or other business combination, in
which Newco is a constituent party to the merger, consolidation, share exchange
or combination, or a sale of securities (other than Transaction Securities),
recapitalization, liquidation, dissolution or similar transaction involving
Newco or any proposal or offer to acquire in any manner, directly or indirectly,
a material equity interest in, or a material amount of voting securities (with
the 

                                       2
<PAGE>
 
acquisition of beneficial ownership of 20% or more of the Voting Equity
Securities of Newco being deemed to be material for this purpose) or assets of,
Newco, other than the transactions contemplated by this Agreement with respect
to Affiliated Equity Holders effected in accordance with this Agreement. A
Material Sale will constitute an Acquisition Proposal.

          "Affiliate" has the meaning assigned to such term in the Investment
           ---------                                                         
Agreement.

          "Affiliated Equity Holders" means Sprint, Sprint L.P.  and any of
           -------------------------                                       
their respective Affiliates (exclusive of the Company, Newco and Newco's
Subsidiaries) that, as of any relevant date of determination, are holders of
Equity Securities.

          "Alternative Securities" means a new series of Preferred Stock having
           ----------------------                                              
terms that are structured and priced in the same manner as the terms of the
Series A Stock (including, without limitation, date of allowable optional
redemption, dividend rate, liquidation value, redemption value, conversion
premium and conversion rate), provided, that, all of such terms are determined,
                              --------  ----                                   
if applicable, by reference to the Average Stock Price for the 30 trading days
prior to the date of issuance of such Alternative Securities.

          "Ancillary Agreements" has the meaning assigned to such term in the
           --------------------                                              
Investment Agreement, but for purposes of this Agreement shall also include the
Investment Agreement.

          "Associate" has the same meaning as in Rule 12b-2 promulgated under
           ---------                                                         
the Exchange Act.

          "Available Top-Up Shares" means, in respect of any issuance of
           -----------------------                                      
Transaction Securities, the number of shares of Common Stock underlying Equity
Securities that Sprint may purchase from Newco pursuant to Section 3.01(d)
hereof following an issuance of Transaction Securities, determined as follows:

          Available Top-Up Shares = (x) (1/(1-SPI) - 1),

where x equals the number of Transaction Securities issued in such transaction
and SPI equals Sprint's Percentage Interest expressed as a decimal carried to
the third place.  As permitted in Section 3.01(e) hereof, Available Top-Up
Shares may, at Sprint's discretion, to the extent indicated in such section, be
in the form of shares of Newco Common Stock or Alternative Securities
convertible into an equivalent number of shares of Newco Common Stock.

          "Average Stock Price" means an average of the closing sales prices of
           -------------------                                                 
a share of Newco Common Stock for a specified period as reported by the
principal securities market or exchange on which such stock is then traded.

          "Beneficial Owner"  shall be a Person who shall be deemed to
           ----------------                                           
"beneficially own" any securities:

          (a)  which such Person or any of such Person's Affiliates or
     Associates, directly or indirectly, has the right to acquire (whether such
     right is exercisable 

                                       3
<PAGE>
 
     immediately or only after the passage of time) pursuant to any agreement,
     arrangement or understanding (whether or not in writing) or upon the
     exercise of conversion rights, exchange rights, rights, warrants, options
     or otherwise;

          (b)  which such Person or any such Person's Affiliates or Associates,
     directly or indirectly, has the right to vote or dispose of or has
     "beneficial ownership" of (as determined pursuant to Rule 13d-3 under the
     Exchange Act as such Rule is in effect on the date of this Agreement),
     including pursuant to any agreement, arrangement or understanding, whether
     or not in writing; provided, however, that a Person shall not be deemed the
                        --------  -------                                       
     "Beneficial Owner" of, or to "beneficially own," any security under this
     subparagraph (b) as a result of an agreement, arrangement or understanding
     to vote such security if such agreement, arrangement or understanding
     arises solely from a revocable proxy given in response to a public proxy or
     consent solicitation made by Newco or the Company pursuant to, and in
     accordance with, the applicable provisions of the General Rules and
     Regulations under the Exchange Act; or

          (c)  which are beneficially owned, directly or indirectly, by any
     other Person (or any Affiliate or Associate thereof) with which such Person
     (or any of such Person's Affiliates or Associates) has an agreement,
     arrangement or understanding (whether or not in writing), for the purpose
     of acquiring, holding, voting (except pursuant to a revocable proxy as
     described in the proviso to subparagraph (b)) or disposing of any voting
     securities of Newco or the Company; provided, however, that nothing in this
                                         --------  -------
     subparagraph (c) shall cause a person engaged in business as an underwriter
     of securities to be the "Beneficial Owner" of, or to "beneficially own,"
     any securities acquired through such person's participation in good faith
     in a firm commitment underwriting under the Act until the expiration of 40
     days after the date of such acquisition.

          "Board" or "Board of Directors" means the Board of Directors of Newco
           -----      ------------------                                       
except where the context requires otherwise.

          "Business Combination" means a transaction, undertaken in any form
           --------------------                                             
whatsoever, involving (i) the purchase or acquisition of Equity Securities if
the consummation of such transaction would result in the purchaser beneficially
owning 35% or more of the Equity Securities outstanding, or (ii) a merger,
consolidation, combination, share exchange, reorganization or other
extraordinary transaction with respect to Newco in which, upon consummation
thereof, the shareholders or owners of the other entity that is a party thereto,
or the controlling Persons thereof, would acquire beneficial ownership of 50% or
more of the Equity Securities outstanding.  A Significant Sale will constitute a
Business Combination.  A Business Combination shall not include (A) transactions
contemplated by this Agreement with respect to Affiliated Equity Holders
effected in accordance with this Agreement or (B) any acquisition of beneficial
ownership of Equity Securities resulting from the formation of a "group," as
defined in Rule 13d-5(b) of the Exchange Act, without the occurrence of any
transaction that would otherwise constitute a Business Combination.

                                       4
<PAGE>
 
          "Certificate of Designation" means the Certificate of Designation of
           --------------------------                                         
Rights, Preferences and Privileges for the Series A Stock.

          "Closing" shall have the meaning given to such term in the Investment
           -------                                                             
Agreement.

          "Common Stock" means the common stock, $.01 par value, of the Company.
           ------------                                                         

          "Company" means EarthLink Network, Inc., a Delaware corporation, and
           -------                                                            
any successor thereto.

          "Conversion Ratio" means, with respect to (i) the Series A Stock, the
           ----------------                                                    
quotient of the "Liquidation Value" divided by the "Conversion Price," as those
terms are defined in the Certificate of Designation, assuming the acceleration
of the full amount of the Liquidation Accretion Dividends as contemplated by the
last sentence of Section 3(a)(i) of the Certificate of Designation, (ii) any
other class or series of Preferred Stock, the conversion ratio pertaining to
such class or series, as in effect on the date of determination, and (iii) the
Convertible Notes, the "Conversion Price" for each such note as defined in the
Credit Agreement, as in effect on the date of determination.

          "Convertible Notes" shall have the meaning set forth in the Recitals
           -----------------                                                  
to this Agreement.

          "Dilution Factor" means, in respect of any issuance of Transaction
           ---------------                                                  
Securities, a fraction expressed as a decimal carried to the third place, equal
to one minus the quotient of the number of Transaction Securities issued divided
by the total number of shares of Newco Common Stock outstanding on a Fully-
Diluted Basis, after giving effect to such issuance of Transaction Securities.

          "Director" means a member of the Board of Directors.
           --------                                           

          "Discriminatory Transaction"  means any transaction or other corporate
           --------------------------                                           
action (other than those specifically contemplated by the express terms of this
Agreement and other than those imposed, without the happening of a contingency,
on each other stockholder on an equal basis) which would (i) impose limitations
on the legal rights of any Affiliated Equity Holder as a stockholder of Newco,
including, without limitation, any action which would impose restrictions based
upon the size of security holding, the business in which a securityholder is
engaged or other considerations applicable to any Affiliated Equity Holder and
not to stockholders generally, (ii) deny any benefit to any Affiliated Equity
Holder, proportionately as a holder of any class of Voting Equity Securities,
that is made available to other holders of any class of Voting Equity
Securities, or (iii) otherwise materially adversely discriminate against any
such Affiliated Equity Holders as stockholders of Newco; provided, however, that
                                                         --------  -------      
(v) under no circumstances shall the adoption and implementation by Newco of a
Stockholders' Right Plan (commonly known as a "poison pill") be deemed to be a
Discriminatory Transaction if such plan would be permitted under Section 4.07
hereof; (w) subject to the proviso in the last sentence of Section 2.04 hereof,
the adoption and implementation of a classified Board of Directors through 

                                       5
<PAGE>
 
an amendment to Newco's Certificate of Incorporation and Bylaws shall not be
deemed to be a Discriminatory Transaction; (x) under no circumstances shall a
Business Combination be deemed to be a Discriminatory Transaction if in such
Business Combination (A) neither the Liquidation Value nor the Conversion Price
of the Series A Stock is changed, and (B) upon consummation of such Business
Combination, the automatic conversion of all outstanding shares of Series A
Stock into shares of Newco Common Stock thereupon and, if applicable, the
acceleration of the full amount of the Liquidation Accretion Dividends as
contemplated by the last sentence of Section 3(a)(i) of the Certificate of
Designation, the holders of Series A Stock shall be offered the right to receive
consideration at the same times (except for any differences in the times at
which such holders receive such consideration that occur because of the
application of the HSR Act (or any applicable waiting periods thereunder) to the
conversion of the Series A Stock into Newco Common Stock), and in the same
amount and the same form per share as all other holders of Newco Common Stock;
(y) it shall not be a Discriminatory Transaction for Newco to take action or
omit to take action having any of the consequences identified under (i), (ii)
and (iii) above to the extent that any such consequence occurs as a result of a
material breach or violation by any Affiliated Equity Holder of this Agreement;
and (z) the execution by Newco, the Company or any Significant Subsidiary of a
definitive agreement with respect to a Business Combination, which agreement is
consistent with the requirements of Section 4.03(c) hereof, shall not be a
Discriminatory Transaction.

          "Effectiveness of this Agreement" means such time as this Agreement
           -------------------------------                                   
becomes effective, if ever, pursuant to Section 7.01 hereof.

          "Equity Security" means (i) any Newco Common Stock, (ii) any debt or
           ---------------                                                    
equity securities of Newco convertible into or exchangeable for Newco Common
Stock or other Voting Equity Securities, (iii) any options, rights or warrants
(or any other similar securities) issued by Newco to acquire Newco Common Stock
or other Voting Equity Securities or (iv) any security issuable in connection
with any stock split, stock dividend, recapitalization or other similar
transaction in which securities are issued on a proportionate basis to all
holders of a class of Equity Securities.

          "Exchange Act" means the Securities Exchange Act of 1934, as amended,
           ------------                                                        
and the rules and regulations promulgated thereunder.

          "Fair Private Market Value" means the aggregate private market equity
           -------------------------                                           
value (including control premium) that an unrelated third party would pay if it
were to acquire all of Newco's outstanding Equity Securities (including Equity
Securities held by Affiliated Equity Holders) in an arm's-length transaction,
assuming (i) that all credible buyers are given an equal opportunity by Newco to
make and effectuate an Acquisition Proposal, (ii) the absence of any commercial
relations between Newco and the Company, on the one hand, and Sprint and its
Affiliates, on the other hand, and (iii) the absence of any ownership stake in
Newco by Affiliated Equity Holders.  The Fair Private Market Value shall be
determined in accordance with Section 4.02 hereof.

                                       6
<PAGE>
 
          "Fully-Diluted Basis," with reference to the number of shares of Newco
           -------------------                                                  
Common Stock outstanding at any time, means the number of shares of Newco Common
Stock outstanding at that time, plus the number of shares of Newco Common Stock
into which or for which all options (both vested and unvested), warrants, rights
and other Equity Securities convertible into or exchangeable for Newco Common
Stock may be exercised, converted or exchanged for shares of Newco Common Stock
at the appropriate Conversion Ratio.

          "Higher Threshold" means 20% at Closing, and as thereafter adjusted
           ----------------                                                  
following any issuance of Transaction Securities by multiplying the Higher
Threshold in effect prior to such issuance, expressed as a decimal carried to
the third place, by the Dilution Factor; provided, that, if following such
                                         --------  ----                   
issuance of Transaction Securities, a Primary Share Offer is made by Newco
pursuant to Section 3.01(d) hereof, the Higher Threshold shall immediately be
increased, but never above .200, to H\2,\ which is to be determined as
follows:

          H\2\= ((x/y) (H\0\- H\1\)) + H\1\

where:

x    =    the number of shares offered to Sprint pursuant to a Primary Share
          Offer;

y    =    the number of Available Top-Up Shares;

H\0\ =    .200; and

H\1\ =    the Higher Threshold in effect after the issuance of Transaction
          Securities.


          "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements Act of
           -------                                                           
1976, as amended, and the regulations promulgated thereunder.

          "Independent Director" means a Director of Newco (i) who is not and
           --------------------                                              
has never been an officer or employee of Newco, any Affiliate or Associate of
Newco or of an entity that derived 5% or more of its revenues or earnings in any
of its three most recent fiscal years from transactions involving Newco or any
Affiliate or Associate of Newco, (ii) who is not and has never been an officer,
employee or director of Sprint, any Affiliate or Associate of Sprint or an
entity that derived more than 5% of its revenues or earnings in any of its three
most recent fiscal years from transactions involving Sprint or any Affiliate or
Associate of Sprint and (iii) who has no affiliation, compensation, consulting
or contracting arrangement with Newco, Sprint or their respective Affiliates or
Associates or any other entity such that a reasonable person would regard such
Director as likely to be unduly influenced by management of Newco, the Company
or Sprint, respectively, or their respective Affiliates or Associates, but shall
not include any Investor Director or Management Director.

          "Intervening Offer" means an Offer for aggregate consideration
           -----------------                                            
reasonably determined in good faith by the Board of Directors to be in excess of
the aggregate consideration proposed to be paid by Sprint in a Sprint Offer or a
Qualified Offer, as applicable.  An Intervening Offer shall be reflected in a
form of definitive agreement which the offeror is 

                                       7
<PAGE>
 
prepared to execute. The conditions to consummation of an Intervening Offer and
the representations, warranties and covenants set forth in the Intervening Offer
shall be customary for a transaction of that type. In evaluating whether an
Offer shall qualify as an Intervening Offer, the Board of Directors shall, in
reliance upon the advice of its financial advisors, reasonably and in good faith
(i) value any securities or other non-cash property constituting all or a
portion of the aggregate consideration comprising such Intervening Offer and
(ii) take into consideration in its evaluation of such Intervening Offer the
effect of any financing contingency upon the likelihood of such Intervening
Offer being consummated.

          "Investment Agreement" has the meaning set forth in the Recitals to
           --------------------                                              
this Agreement.

          "Investor Director" means a Director who is designated for such
           -----------------                                             
position by Sprint in accordance with Section 2.01.

          "Irrevocable Proxy" means the Irrevocable Proxy granted by each of
           -----------------                                                
Sprint and Sprint L.P. in the form attached hereto.

          "Lower Threshold" means 10% at Closing, and as thereafter adjusted
           ---------------                                                  
following any issuance of Transaction Securities by multiplying the Lower
Threshold in effect prior to such issuance, expressed as a decimal carried to
the third place, by the Dilution Factor; provided, that, if following such
                                         --------  ----                   
issuance of Transaction Securities, a Primary Share Offer is made by Newco
pursuant to Section 3.01(d) hereof, the Lower Threshold shall immediately be
increased, but never above .100, to L\2,\ which is to be determined as follows:

          L\2\ = ((x/y) (L\0\- L\1\)) + L\1\

where:

x    =    the number of shares offered to Sprint pursuant to a Primary Share
          Offer;

y    =    the number of Available Top-Up Shares;

L\0\ =    .100; and

L\1\ =    the Lower Threshold in effect after the issuance of Transaction
          Securities.

          "Management Director" means a Director who is also an employee of the
           -------------------                                                 
Company or Newco or any other Director designated as such by the Board of
Directors (or any nominating committee thereof) in accordance with Section 2.01.

          "Market Capitalization" shall mean, as of any given date, the total
           ---------------------                                             
market value of Newco, determined by multiplying the number of shares of Newco
Common Stock outstanding on a Fully-Diluted Basis by the Market Price as of that
date.

                                       8
<PAGE>
 
          "Market Price" means the closing sale price of a share of Newco Common
           ------------                                                         
Stock on a given date as reported by the principal securities market or exchange
on which such stock is traded.

          "Material Sale" means any proposal involving the sale of assets of
           -------------                                                    
Newco or any Subsidiary or the sale of capital stock of any Subsidiary by Newco,
in any such case, for which the consideration proposed to be paid in such
transaction represents 20% or more of the Market Capitalization on the date that
Newco receives such proposal.

          "Newco" means Newco, Inc., a Delaware corporation and any successors
           -----                                                              
thereto.

          "Newco Common Stock" means the common stock, par value, .01 per share
           ------------------                                                  
of Newco.

          "Newco Outstanding Stock Report" means a report provided by Newco to
           ------------------------------                                     
Sprint pursuant to Section 6.02(a) hereof.

          "New Security" means any Equity Security issued by Newco; provided,
           ------------                                             -------- 
that, "New Security" shall not include (i) any Equity Securities issuable upon
- ----                                                                          
exercise or conversion of any exercisable or convertible Equity Security, (ii)
any Equity Securities issuable in connection with any stock split, stock
dividend, recapitalization or other similar transaction with respect to
outstanding Equity Securities in which such securities are issued to all
stockholders of Newco on a proportionate basis, (iii) the first 1,000,000 shares
of Newco Common Stock (primary shares, as adjusted for any stock splits effected
after the Closing), sold by Newco after the date hereof (exclusive of shares
issued pursuant to the Merger), which number shall be reduced on a share-for-
share basis for any shares of Common Stock of the Company issued after the date
hereof and prior to Closing (exclusive of shares of Common Stock issued by the
Company pursuant to the exercise of options, warrants or other rights or
convertible securities to purchase such Common Stock), (iv) any Equity
Securities issued or granted to employees or directors of, or consultants to,
Newco pursuant to any employee benefit plan or arrangement, and (v) any Equity
Securities issued to Affiliated Equity Holders.

          "Non-Recommended Third-Party Offer" has the meaning given to such term
           ---------------------------------                                    
in Section 4.03(a)(ii) hereof.

          "Offer" means a bona fide, written offer from any Person other than an
           -----                                                                
Affiliated Equity Holder to effect a Business Combination.

          "Person" means an individual, a partnership, a joint venture, a
           ------                                                        
corporation, a limited liability company, a business or other trust, an
incorporated or unincorporated organization, a government or any department or
agency thereof.

          "Postponement Right" has the meaning given to such term in Section
           ------------------                                               
4.02(b) hereof.

                                       9
<PAGE>
 
          "Preferred Stock" means any shares of Preferred Stock issued by Newco,
           ---------------                                                      
including without limitation, shares of Series A Stock.

          "Primary Share Offer" means an offer made by Newco to Sprint pursuant
           -------------------                                                 
to Section 3.01(d) hereof to purchase Available Top-Up Shares following an
issuance of Transaction Securities.

          "Pro Rata Share" means a fraction, expressed as a decimal, carried to
           --------------                                                      
the third place, (i) the numerator of which shall be the sum of (A) the number
of shares of Newco Common Stock owned by Affiliated Equity Holders at Closing
and (B) the number of shares of Newco Common Stock into which Equity Securities
owned by Affiliated Equity Holders are convertible at the applicable Conversion
Ratio at Closing, and (ii) the denominator of which shall be the total number of
shares of Newco Common Stock outstanding at Closing on a Fully-Diluted Basis,
plus 1,000,000 less any Transaction Securities issued between the date of this
Agreement and Closing.  The Pro Rata Share shall be held constant, except that
if indebtedness is incurred pursuant to the Credit Agreement, then both the
numerator and denominator used to recalculate Pro Rata Share shall increase by
the number of Equity Securities created by the incurrence of such indebtedness.
The Parties acknowledge that the Pro Rata Share, as of the date hereof, equals
 .278, subject to adjustment as set forth above.

          "Qualified Offer" means an offer made by an Affiliated Equity Holder
           ---------------                                                    
to acquire all of the Equity Securities not already owned by Affiliated Equity
Holders at a price per share in excess of the equivalent per share price set
forth in a Third-Party Offer or an Intervening Offer, as the case may be.  A
Qualified Offer shall be reflected in a form of definitive agreement which
Sprint is prepared to execute.  The conditions to consummation of the Qualified
Offer and the representations, warranties and covenants set forth in the
Qualified Offer shall be customary for transactions in which a similarly
situated stockholder offers to purchase all of the equity securities (capital
stock and any securities that represent rights to purchase such stock) not held
by such stockholder and may not, in any event, in the reasonable judgment of the
Board of Directors exercised in good faith, be more onerous in any material
respect than those set forth in the Third-Party Offer or the Intervening Offer,
as the case may be.  In the evaluating whether an offer shall qualify as a
Qualified Offer, the Board of Directors shall, in reliance upon the advice of
its financial advisors, reasonably and in good faith take into consideration in
its evaluation of such Qualified Offer the effect of any financing contingency
upon the likelihood of such Qualified Offer being consummated.

          "Recommended Third-Party Offer" has the meaning given to such term in
           -----------------------------                                       
Section 4.03(a)(i) hereof.

          "Registration Rights Agreement" means the Registration Rights
           -----------------------------                               
Agreement dated as of the date hereof, by and among Sprint, Sprint L.P. and
Newco.

          "Right to Offer Period" shall have the meaning given to such term in
           ---------------------                                              
Section 4.02(a) hereof.

          "SEC" means the Securities and Exchange Commission.
           ---                                               

                                       10
<PAGE>
 
          "Securities Act" means the Securities Act of 1933, as amended, and the
           --------------                                                       
rules and regulations thereunder.

          "Series A Stock" means the Series A Convertible Preferred Stock of
           --------------                                                   
Newco.

          "Significant Sale" means the sale of assets of Newco or any Subsidiary
           ----------------                                                     
or the sale of capital stock of any Subsidiary by Newco, in any such case, for
which the consideration proposed to be paid in such transaction represents 35%
or more of the Market Capitalization on the date that Newco agrees to such sale.

          "Significant Subsidiary" means, with reference to any person, a
           ----------------------                                        
"significant subsidiary" as defined in Rule 1-02(w) of Regulation S-X
promulgated by the SEC.

          "Specified Number of Equity Securities," as it applies to the Voting
           --------------------------------------                             
Equity Securities owned by Affiliated Equity Holders and required pursuant to
Section 4.02(e) or Section 4.03(d) hereof to be sold by Affiliated Equity
Holders or voted by Affiliated Equity Holders, shall equal (i) in respect of a
tender offer, as of a date immediately prior to the closing of the tender offer,
the quotient of the number of shares of Voting Equity Securities owned by
Unaffiliated Equity Holders validly tendered into such transaction and accepted
for payment thereunder divided by the total number of shares of Voting Equity
Securities owned by Unaffiliated Equity Holders and (ii) in respect of a
stockholder vote, as of the date of such vote, the quotient of the number of
shares of Voting Equity Securities owned by Unaffiliated Equity Holders voted in
favor of the matter divided by the total number of shares of Voting Equity
Securities owned by Unaffiliated Equity Holders; in either case multiplied by
the number of shares of Voting Equity Securities owned by Affiliated Equity
Holders on the expiration date of the tender offer or on the record date for the
stockholders' meeting with respect to the stockholder vote, as applicable;
provided, that, the Affiliated Equity Holders shall have no obligation to effect
- --------  ----                                                                  
a conversion on or before the expiration of the tender offer or the record date
in order to tender or vote such Equity Securities.

          "Standstill Provisions" shall have the meaning given to such term in
           ---------------------                                              
Section 7.01 hereof.

          "Sprint Offer" has the meaning given to such term in Section 4.02(b)
           ------------                                                       
hereof.

          "Sprint Ownership Report" means a report provided by Sprint to Newco
           -----------------------                                            
pursuant to Section 6.02(b) hereof.

          "Sprint's Percentage Interest" means the percentage of Equity
           ----------------------------                                
Securities owned by Affiliated Equity Holders, determined by converting the
following fraction into a decimal carried to the third place, (i) the numerator
of which shall be the sum  of (A) the number of shares of Newco Common Stock
owned by Affiliated Equity Holders and (B) the number of shares of Newco Common
Stock into which Equity Securities owned by Affiliated Equity Holders are
convertible at the applicable Conversion Ratio, and (ii) the denominator of
which shall be the total number of shares of Newco Common Stock outstanding on a
Fully-Diluted Basis plus that portion of the 1,000,000 shares of Newco Common
Stock discussed in the definition of "Pro 

                                       11
<PAGE>
 
Rata Share" which has not yet been issued as of the date of calculation. In
determining the total number of shares of Newco Common Stock outstanding on a
Fully-Diluted Basis, Sprint shall be entitled to rely on capitalization
information to be provided by Newco in the most recent Newco Stock Ownership
Report. Notwithstanding any other provision of this Agreement to the contrary,
Sprint shall not be obligated under this Agreement to sell or otherwise dispose
of any Equity Securities to reduce Sprint's Percentage Interest below the Pro
Rata Share in the event that the Sprint's Percentage Interest exceeds the Pro
Rata Share due solely to a repurchase or redemption of Equity Securities by
Newco, the effectuation by Newco of a reverse stock split, recapitalization,
reclassification or other action reducing the number of Equity Securities.

          "Subsidiary" has the same meaning as in Rule 12b-2 promulgated under
           ----------                                                         
the Exchange Act.

          "Tender Offer" has the meaning set forth in the Recitals to this
           ------------                                                   
Agreement.

          "Third-Party Offer" has the meaning given to such term in Section 4.03
           -----------------                                                    
hereof.

          "Top-Up Threshold" means a decimal, carried to the third place,
           ----------------                                              
determined at Closing to be equal to the Pro Rata Share less .100, subject to
subsequent adjustment (i) for adjustments to the Pro Rata Share in accordance
with the penultimate sentence of the definition thereof and (ii) upon the
issuance of Transaction Securities, by multiplying the Top-Up Threshold in
effect prior to such issuance by the Dilution Factor; provided, that, if,
                                                      --------  ----     
following such issuance of Transaction Securities, a Primary Share Offer is made
by Newco pursuant to Section 3.01(d) hereof, the Top-Up Threshold shall
immediately be increased to T\2,\ which is to be determined as follows:

          T\2\ = ((x/y) (T\0\ - T\1\)) + T\1\

where:

x    =    the number of shares offered to Sprint pursuant to a Primary Share
          Offer;    

y    =    the number of Available Top-Up Shares;

T\0\ =    the Pro Rata Share at Closing less .100; and

T\1\ =    the Top-Up Threshold in effect after the issuance of a Transaction
          Securities.

          "Total Voting Power" means the aggregate number of votes entitled to
           ------------------                                                 
be voted generally in an election of Directors of Newco by all of the
outstanding Voting Equity Securities.

          "Transaction Securities" means New Securities of Newco or Common Stock
           ----------------------                                               
of the Company that are issued pursuant to or in connection with any joint
venture, strategic alliance, acquisition, tender or exchange offer, merger,
combination or purchase of all or substantially all of the assets of another
entity effected by Newco or the Company in which or in connection with which
securities of Newco or the Company are issued other than solely for cash.  The
number of Transaction Securities issued in any such transaction shall be
determined based 

                                       12
<PAGE>
 
on the number of shares of Newco Common Stock on a Fully-Diluted Basis
underlying such New Securities.

          "Unaffiliated Equity Holders" means, as of any relevant date of
           ---------------------------                                   
determination, all holders of Equity Securities other than Affiliated Equity
Holders.

          "Underwriting Discount" means, with respect to a Primary Share Offer,
           ---------------------                                               
an amount equal to the underwriting discount applied in the most recent
underwritten offering of Newco Common Stock (including an underwritten offering
simultaneous with such Primary Share Offer).

          "Voting Equity Securities" means Equity Securities of Newco that, at
           ------------------------                                           
the date of such determination, entitle the holders thereof to vote generally in
any election of Directors.

          "Voting Power" means the ability to vote or to control, directly or
           ------------                                                      
indirectly, by proxy or otherwise, the vote of any Voting Equity Securities.

          "Window Period" shall have the meaning given to such term in Section
           -------------                                                      
3.01(d) hereof.

          "13D Group" means any group of Persons formed for the purpose of
           ---------                                                      
acquiring, holding, voting or disposing of Voting Equity Securities which would
be required under Section 13(d) of the Exchange Act to file a statement on
Schedule 13D with the SEC as a "person" within the meaning of Section 13(d)(3)
of the Exchange Act, and Rule 13d-5 under the Exchange Act, if such group
beneficially owned Voting Equity Securities representing more than 5% of any
class of Voting Equity Securities then outstanding.  The agreements contemplated
by this Agreement and the Ancillary Agreements shall be deemed not to result in
the formation of a 13D Group.

                                  ARTICLE II

                             CORPORATE GOVERNANCE
                             --------------------

          SECTION 2.01.  Composition of the Board of Directors.  The fundamental
                         -------------------------------------                  
policies and strategic direction of Newco, the Company and any Significant
Subsidiary shall be determined by their respective Boards of Directors.  The
composition of each of the Board of Directors of Newco, the Company or any
Significant Subsidiary and manner of selecting members thereof shall be as
follows:

          (a)  At and after the Effectiveness of this Agreement, each of the
Board of Directors shall be comprised of not more than 11 Directors.

          (b)  Immediately following the Effectiveness of this Agreement, Newco
and the Company shall elect to their respective Boards of Directors, and shall
thereafter cause to be elected  to the Board of Directors of any Significant
Subsidiaries of Newco, two individuals, each of whom shall be designated as an
Investor Director by Sprint.  Following the Effectiveness of this Agreement, the
current Directors of the Company listed under the heading of 

                                       13
<PAGE>
 
"Management Directors" in Schedule 2.01 shall be deemed to be Management
Directors of Newco and the current Directors of the Company listed under the
heading "Independent Directors" in Schedule 2.01 shall be deemed to be
Independent Directors of Newco, in each case until the expiration of the term of
their respective elections (or any earlier termination, resignation or removal).

     If Newco, the Company or any Significant Subsidiary shall have a Strategic
and Business Planning Committee (or other committee responsible for strategic
and business planning) or a Finance Committee (or other committee responsible
for finance) during the time when Sprint shall have a right to designate one or
more Investor Directors hereunder, Sprint shall be entitled to appoint one
Investor Director to each such committee. If there is no such committee, Sprint
shall have a reasonable opportunity to review and discuss Newco's strategic and
business plans and financing plans with management of Newco prior to the
submission of any such plans to the Board of Newco, the Company or any
Significant Subsidiary. Sprint shall also have the right to appoint one Investor
Director to each of the other committees of the Board, except as otherwise
provided in this paragraph and except for appointments to any existing committee
of the Board if the scope of authority of such committee is not hereafter
expanded. Sprint shall receive copies of all information and materials provided
to the directors of Newco, the Company and any Significant Subsidiary or to
committee members, except for information and materials provided to a committee
that an Investor Director is prohibited from participating in as set forth in
this paragraph, at the time such information and materials are provided to such
directors. Notwithstanding the foregoing, nothing set forth herein shall entitle
any Investor Director to participate on any committee of the Board of Directors
of Newco, the Company or any Significant Subsidiary created for the purpose of
considering a Business Combination, an Acquisition Proposal, a Sprint Offer or a
Qualified Offer, or to participate in the Board's deliberations with respect to
any of the foregoing.

          (c)  Except as otherwise provided herein, and except at any time in
which the holders of Series A Stock are entitled to elect any directors of Newco
pursuant to Section 7(b) of the Certificate of Designation, in which case
paragraphs (b), (d) and (e) of this Section 2.01 will not be effective as to
Newco, from and after the Effectiveness of this Agreement, Sprint shall have the
right to designate two Investor Directors, each of whom shall be nominated by
the Board of Directors or any nominating committee thereof.

          (d)  Notwithstanding anything in the foregoing paragraph (c) to the
contrary, if at the end of any three consecutive months, (i) Sprint's Percentage
Interest shall be less than the Higher Threshold, Sprint shall promptly take
action to cause one of its Investor Directors to resign from the Boards of
Directors of Newco, the Company and any Significant Subsidiary, or (ii) Sprint's
Percentage Interest shall be less than the Lower Threshold, Sprint shall
promptly take action to cause any and all remaining Investor Directors elected
pursuant to Section 2.01(b) or Section 7(b) of the Certificate of Designation,
as the case may be, to resign from the Boards of Directors of Newco, the Company
or any Significant Subsidiary; and, upon the resignation of each respective
Investor Director, Sprint shall forever cease to have any rights to designate
any such Investor Director position pursuant to the terms of this Agreement or
the Certificate of Designation.

                                       14
<PAGE>
 
          (e)  Except as otherwise provided in paragraph (d) above, Sprint shall
have the right to designate any replacement for an Investor Director designated
for nomination or nominated in accordance with this Section 2.01 upon the death,
resignation, retirement, disqualification or removal from office for other cause
of such Director.  The Boards of Directors of Newco, the Company and any
Significant Subsidiary shall elect each person so designated.

          SECTION 2.02.  Solicitation and Voting of Shares.  (a) Newco shall use
                         ---------------------------------                      
its best efforts to solicit from the stockholders of Newco eligible to vote for
the election of Directors proxies in favor of the nominees selected in
accordance with Section 2.01.

          (b)  In any election of Directors or any meeting of the stockholders
of Newco called expressly for the removal of Directors, so long as the Board of
Directors includes (and will include after any such removal) any number of
Investor Directors contemplated by Section 2.01, Affiliated Equity Holders shall
be present for purposes of establishing a quorum and shall vote all their shares
of Voting Equity Securities (i) in favor of any nominee or Director selected in
accordance with Section 2.01 (including any nominee designated as a "Management
Director" or an "Independent Director" and any successor thereto) and (ii)
otherwise against the removal of any Director selected in accordance with
Section 2.01 (including any nominee designated as a "Management Director" or an
"Independent Director" and any successor thereto). Subject to Section 4.02(e),
Section 4.03(d) and the terms of the Irrevocable Proxy, in any other matter
submitted to a vote of the stockholders of the Company, Sprint may vote any or
all of its Voting Equity Securities in accordance with the terms thereof.

          (c)  The Affiliated Equity Holders will, and will cause any of their
Affiliates (other than Newco, the Company and its Subsidiaries) who are
permitted transferees of the Affiliated Equity Holders' rights under this
Agreement to, take all action as stockholders of Newco as necessary to effect
the provisions of this Agreement.

          SECTION 2.03.  Enforcement of this Agreement.  A majority of the
                         -----------------------------                    
Directors, excluding the Investor Directors, shall have full and complete
authority on behalf of Newco to enforce the terms of this Agreement.

          SECTION 2.04.  Certificate of Incorporation and By-laws. Newco and
                         ----------------------------------------           
Sprint shall take or cause to be taken all lawful action necessary to ensure at
all times that Newco's Certificate of Incorporation and By-laws are not at any
time inconsistent with the provisions of this Agreement.  At Sprint's request,
the Board of Directors shall adopt (and if necessary submit and recommend for
approval by stockholders) other amendments to Newco's Certificate of
Incorporation or By-laws reasonably necessary to implement the provisions of
this Agreement.  Nothing set forth herein shall preclude the Board of Directors
from proposing to the stockholders and, upon their approval of such proposal,
implementing, a classified Board of Directors, provided, that, each Investor
                                               --------  ----               
Director must be placed in a different class of Directors.

          SECTION 2.05.  Advisors.  If appropriate under the circumstances of a
                         --------                                              
given situation, the Independent Directors may retain, at the cost and expense
of Newco or the Company, services of an investment banking firm of national
reputation of their choice and one law firm of their choice to advise them in
their capacity as Independent Directors with respect to 

                                       15
<PAGE>
 
any matter on which the Independent Directors, as a group, are required or
permitted to act hereunder.

          SECTION 2.06.  Investor Director Concurrence.  From the Closing Date
                         -----------------------------                        
through the date this Agreement is terminated in accordance with Section 7.01
hereof, and for the duration of any period in which Sprint's Percentage Interest
is greater than the Lower Threshold, neither the Board of Directors of Newco nor
the Board of Directors of any Significant Subsidiary shall take, authorize or
permit any of the following actions without the concurrence of all Investor
Directors serving in such capacity at that time:

          (a)  The execution or performance of any Discriminatory Transaction;

          (b)  The issuance of any class or series of capital stock of Newco
that provides for voting rights in excess of one vote per share;

          (c)  The dissolution or liquidation (or adoption of a plan of
dissolution or liquidation) of Newco or any Subsidiary thereof; the commencement
by Newco or any Subsidiary thereof of any suit, case, proceeding or other action
(i) in bankruptcy under the federal bankruptcy or other laws relating to
bankruptcy, insolvency, reorganization or relief of debtors seeking to
adjudicate Newco or any Subsidiary thereof a bankrupt or insolvent, or seeking
reorganization, arrangement, adjustment, winding up, liquidation, dissolution,
composition or relief with respect to Newco or any Subsidiary thereof; or (ii)
seeking appointment of a receiver, trustee, custodian or other similar official
for Newco or any Subsidiary thereof, or (iii) seeking to make a general
assignment for the benefit of creditors of Newco, provided, however, that to the
                                                  --------  -------             
extent required by the fiduciary obligations of the Board of Directors,
exercised in good faith upon the advice of its outside counsel, Newco or any
Subsidiary thereof may undertake the actions set forth in this subsection (c)
without the concurrence of the Investor Directors;

          (d)  The conduct by Newco or any Significant Subsidiary of its
business substantially outside its current general field of enterprise; or

          (e)  The issuance of Transaction Securities representing (i) in any
twelve-month period, in one or more transactions, 50% or more of the number of
shares of Newco Common Stock outstanding on a Fully-Diluted Basis prior to
giving effect to such issuances, or (ii) in any one transaction, 35% or more of
the number of shares of Newco Common Stock outstanding on a Fully-Diluted Basis
prior to giving effect to such issuance.

                                  ARTICLE III

                       EQUITY PURCHASES FROM THE COMPANY
                       ---------------------------------

          SECTION 3.01.  Subscription Rights.  (a) So long as Sprint's
                         -------------------                          
Percentage Interest is greater than the Top-Up Threshold, the Affiliated Equity
Holders, collectively, shall have the rights provided for in this Section 3.01.

                                       16
<PAGE>
 
          (b)  Notwithstanding any provision to the contrary contained herein,
Sprint may effect its rights pursuant to this Section 3.01 by making purchases
of Equity Securities at any time from any Person other than Newco so long as
after giving effect to such purchases, Sprint's Percentage Interest is less than
or equal to the Pro Rata Share.

          (c)  If the Board of Directors proposes to issue New Securities (other
than New Securities that are Transaction Securities) at such time as Sprint's
Percentage Interest is greater than the Top-Up Threshold, Newco shall provide
written notice to Sprint (the "Subscription Notice") of its intent to effect
such issuance at least five business days prior to the date on which the meeting
of the Board is held to authorize the issuance of such New Securities.  The
Subscription Notice shall set forth (i) the number of New Securities proposed to
be issued and the terms of such New Securities, (ii) the consideration (or
manner of determining the consideration by reference to the market price), if
any, for which such New Securities are proposed to be issued and the terms of
payment, (iii) the number of New Securities Sprint shall be entitled to purchase
in compliance with the provisions of this Section 3.01 and the purchase price
(or manner of determining the consideration by reference to the market price)
and form of consideration therefor and (iv) the proposed date of issuance of
such New Securities. For a period of ten business days after the receipt by
Sprint of the Subscription Notice, Sprint shall have the right to purchase the
Pro Rata Share of such issuance and shall notify Newco in writing, within such
time period whether it elects to purchase all or any portion of the Equity
Securities offered to Sprint pursuant to the Subscription Notice.  If Sprint
shall elect to purchase any such New Securities, such securities which it shall
have elected to purchase shall be issued and sold to Sprint by Newco at the same
times and on the same terms and conditions as the New Securities are issued and
sold to third parties (except that, if such New Securities are issued for
consideration other than cash, Sprint shall pay the lower of (x) the same
purchase price per share and other terms, including the same form of
consideration paid by the Purchaser for the New Securities or (y) the fair
market value per share thereof, determined by an independent appraiser mutually
selected by Newco and Sprint), in either case, times the number of shares Sprint
is entitled to purchase; provided, however, that if Sprint's purchase of such
                         --------  -------                                   
Equity Securities would, in the opinion of its counsel, give rise to the
application of waiting periods under the HSR Act, Sprint shall be obligated to
consummate such purchase as soon as practicable after the applicable waiting
period has elapsed or terminated on an unconditional basis, and Sprint shall,
during such time, diligently and in good faith seek expiration or termination of
the applicable waiting period.  If, for any reason, the issuance of New
Securities to third parties is not consummated, Sprint's right to purchase its
Pro Rata Share of such issuance shall lapse, subject to Sprint's ongoing
subscription right with respect to issuances of New Securities at later dates or
times.

          (d)  (i)  At such time as Newco, acting in good faith on the basis of
the most recent Sprint Ownership Report provided pursuant to Section 6.02(b)
hereof, determines that Sprint's Percentage Interest has decreased by .05 or
more, after giving effect to any and all Primary Share Offers, solely as a
result of issuances of Transaction Securities, Newco shall promptly notify
Sprint of such event in writing, but in any event not later than the due date of
the next Newco Outstanding Stock Report.

                                       17
<PAGE>
 
          (ii)  Not later than the second anniversary of Sprint's receipt
of such notice (the "Window Period"), Newco shall be obligated to make written
offers for Sprint to purchase (each, a "Primary Share Offer"), in the aggregate
on the basis of all such Primary Share Offers made in the Window Period, not
less than the sum of the number of Available Top-Up Shares resulting from all
issuances of Transaction Securities that have collectively caused Sprint's
Percentage Interest to have decreased by .05 or more (the "Aggregate Number of
Top-Up Shares") at a purchase price equal to the Average Stock Price for the 10
trading days prior to the date of issuance, less the Underwriting Discount.
Sprint may accept a Primary Share Offer within five business days of its receipt
thereof by giving written notice to Newco of its desire to do so, specifying
(subject to Section 3.01(e) hereof) the number and form of shares of Equity
Securities of Newco Sprint is willing to purchase pursuant to such Primary Share
Offer, and such transaction shall be consummated in accordance with such notice
within three business days of Newco's receipt thereof. The Aggregate Number of
Top-Up Shares will be reduced by the number of shares offered to Sprint in the
Primary Share Offer.

          (iii) If Newco, acting in good faith on the basis of the most
recent Sprint Ownership Report provided pursuant to Section 6.02(b) hereof,
determines that Sprint's Percentage Interest has decreased by .10 or more solely
as a result of the issuance of Transaction Securities, after giving effect to
any and all Primary Share Offers, Newco shall promptly notify Sprint of such
event in writing, but in any event not later than the due date of the next Newco
Outstanding Stock Report. In such event, the Window Period shall be accelerated
such that Newco shall be obligated to make one or more Primary Share Offers with
respect to not less than the Aggregate Number of Top-Up Shares, as then
calculated, at the earlier of (i) the expiration of the Window Period, as
determined above, or (ii) six months after the date Sprint receives the
foregoing notice from Newco.

          (iv)  Notwithstanding anything contained in this Agreement to the
contrary, in no event whatsoever shall Newco be obligated to make Sprint a
Primary Share Offer that, after giving effect to such transaction, would cause
Sprint's Percentage Interest to exceed the Pro Rata Share.

          (e)   In respect of a purchase of New Securities pursuant to Section
3.01(c) or 3.01(d) hereof, Sprint may, at its option, by notice given to Newco
at the time Sprint provides notice of its intention to purchase New Securities
pursuant to either of such sections, acquire such shares in the form of
Alternative Securities (to the extent set forth below) convertible into the
applicable number of shares of Newco Common Stock, assuming the acceleration of
the full amount of any liquidation accretion dividends with respect to such
Alternative Securities, consistent with the acceleration contemplated by the
last sentence of Section 3(a)(i) of the Certificate of Designation.  Sprint's
purchase of New Securities in the form of Alternative Securities shall be
limited as follows:

          (i)   From the Closing to the second anniversary thereof, Sprint may
          purchase not more than 75% of any issuance of New Securities in the
          form of Alternative Securities;

                                       18
<PAGE>
 
          (ii)  After the second anniversary of the Closing until the third
          anniversary thereof, Sprint may purchase not more than 66.67% of any
          issuance of New Securities in the form of Alternative Securities; and

          (iii) After the third anniversary of the Closing, Newco shall have no
          obligation to issue New Securities in the form of Alternative
          Securities.

          SECTION 3.02.  Issuance and Delivery of New Securities and Voting
                         --------------------------------------------------
Equity Securities.  Newco represents, warrants and covenants to Sprint that (i)
- -----------------                                                              
upon issuance, all of the shares of New Securities or Alternative Securities
sold to Sprint pursuant to this Article III shall be duly authorized, validly
issued, fully paid and nonassessable and will be approved (if outstanding
securities of Newco of the same type are at the time already approved) for
quotation on the Nasdaq National Market or for quotation or listing on the
principal trading market for the securities of Newco at the time of issuance and
(ii) upon delivery of such shares, such shares shall be free and clear of all
claims, liens, encumbrances, security interests and charges of any nature and
shall not be subject to any preemptive right of any stockholder of Newco or any
other rights to purchase or vote such shares or any power of attorney with
respect thereto, except as may be set forth in this Agreement and the Investment
Agreement.  Each share issued or delivered by Newco hereunder shall bear the
legend set forth in Section 3.03 of the Investment Agreement.

                                  ARTICLE IV
                                  ----------

       PURCHASES OF ADDITIONAL EQUITY SECURITIES; BUSINESS COMBINATIONS
       ----------------------------------------------------------------

          SECTION 4.01.  General Standstill Obligations.  Subject to the
                         ------------------------------                 
following provisions and except for (i) purchases of shares made by Sprint
permitted under the provisions of Section 3.01, or (ii) offers, purchases and
other matters effected by Sprint in accordance with the provisions of Section
4.02 or Section 4.03 hereof, none of the Affiliated Equity Holders will, nor
will any Affiliated Equity Holders authorize any of their agents or
representatives to, without prior written consent of the Board of Directors of
Newco, directly or indirectly, acting alone or in concert with other Persons:

          (a)  acquire, offer to acquire, or agree to acquire, directly or
indirectly, by purchase or otherwise, any Equity Securities or direct or
indirect rights to acquire any Equity Securities, or any equity securities of
any Subsidiary of Newco, material assets of Newco or any Subsidiary or division
of Newco or of any successor or controlling Person of any of the foregoing,
except for its right to convert Series A Stock, Alternative Securities, the
Convertible Notes or other Equity Securities, and to receive stock dividends,
stock splits and other distributions of Equity Securities;

          (b)  make, or in any way participate, directly or indirectly, in any
"solicitation" of proxies to vote (as such terms are used in the rules of the
SEC), or seek to advise or influence any person or entity with respect to the
voting of any Voting Equity Securities of Newco, except for any solicitation of
proxies to vote or related communications made in response to a proxy 

                                       19
<PAGE>
 
contest by a third party in connection with offers made by Sprint in accordance
with Section 4.02 or Section 4.03 hereof;

          (c)  make any public announcement with respect to, or submit a
proposal for, or offer to effect (with or without conditions) any purchase of a
significant portion of the assets of Newco or any Subsidiary or division of
Newco, any tender or exchange offer for any of the Equity Securities of Newco or
a merger, consolidation, combination, share exchange, reorganization or other
extraordinary transaction involving Newco or any of its Equity Securities or
assets or any Subsidiary of Newco or any of such Subsidiary's equity securities
or assets, or otherwise make any Acquisition Proposal, except for any
announcement required in connection with Section 4.02 or Section 4.03 hereof;

          (d)  form, join or in any way participate in a "group" as defined in
Rule 13d-5(b) under the Exchange Act in connection with any of the foregoing,
except as contemplated by any Ancillary Agreement; or

          (e)  request Newco or any of its representatives, directly or
indirectly, to amend or waive any provision of this Section 4.01.

          Sprint will promptly advise Newco of any inquiry or proposal made to
it with respect to any of the foregoing and describe, in reasonable detail, the
terms and conditions thereof.

          Notwithstanding any other provision of this Agreement to the contrary,
in the event that, following termination of this Agreement pursuant to Section
7.01 hereof, but at such time as Sprint shall still be subject to this Section
4.01, Newco receives either (i) a Recommended Third-Party Offer or (ii) a Non-
Recommended Third-Party Offer, which the Board of Directors of Sprint reasonably
determines in good faith upon consultation with independent legal counsel and
its outside financial advisors is reasonably likely to be consummated, Sprint
shall be temporarily released from its obligations under this Section 4.01
insofar as necessary to permit Sprint to present an offer directly to the Board
of Directors.  Such release shall survive for so long as such Third-Party Offer
remains outstanding or is consummated or abandoned.

          If any agent or representative of an Affiliated Equity Holder shall
violate any provision of this Section 4.01 by purchasing Equity Securities for
the account of any Affiliated Equity Holder or take any other action in
violation of this Section 4.01 for or on behalf of any Affiliated Equity Holder,
each Affiliated Equity Holder shall, within 14 days of becoming aware of such
violation, take such action as is necessary to remedy such violation, including
selling all Equity Securities purchased in violation of this Section 4.01, and,
upon effecting such remedy, such violation shall not be deemed to be a breach of
this Agreement.

          SECTION 4.02.  Sprint Right to Offer.  (a) Following the 39-month
                         ---------------------                             
anniversary of Closing and prior to the 63-month anniversary of Closing (such
period, the "Right to Offer Period"), Sprint shall have the right to offer to
purchase all, but not less than all, of the outstanding Equity Securities that
it does not already own at a per share price equal to the per share price
determined by dividing the Fair Private Market Value by the total number of
shares of Newco Common Stock outstanding on a Fully-Diluted Basis.  The Fair
Private Market Value shall be determined in accordance with Section 4.02(b).
During any time in which Sprint shall be permitted to make an offer under this
Section 4.02(a), Newco shall make available to Sprint such information regarding
the business, properties, assets, condition (financial or otherwise) or results
of operations of Newco, the Company and their Significant Subsidiaries
reasonably requested by Sprint, subject to Sprint entering into a customary
confidentiality agreement with respect to all such information.

          (b)  (i)  In the event Sprint wishes to exercise its right to offer
with respect to all, but not less than all, of the outstanding Equity Securities
that it does not already own, as set forth in Section 4.02(a) hereof, Sprint
shall approach the Board of Directors with an offer in


                                       20
<PAGE>

writing (the "Sprint Offer"), which shall include the price per share Sprint is
willing to pay based on the definition of Fair Private Market Value and describe
in reasonable detail such other terms and conditions of the Sprint Offer.  A
Sprint Offer shall not be subject to any financing contingency.  A Sprint Offer
shall be reflected in a form of definitive agreement which Sprint is prepared to
execute.  The conditions to consummation of the Sprint Offer and the
representations and warranties set forth in the Sprint Offer shall be reasonable
and customary for transactions in which a similarly situated stockholder offers
to purchase all of the Equity Securities not held by such stockholder or its
Affiliates.

          (ii) The Board of Directors of Newco shall have a one-time right,
exercisable by written notice to Sprint given within 14 days after the receipt
of the Sprint Offer, to postpone the making of that offer for nine months (the
"Postponement Right"); provided, that, the Board of Directors may not exercise
                       --------  ----                                         
the Postponement Right in connection with a Sprint Offer made pursuant to
Section 4.03(b) or Section 4.04(b) hereof.  Upon exercise of the Postponement
Right, Sprint shall withdraw the Sprint Offer, in which case it may not exercise
its right to offer under this Section 4.02 for a period of nine months following
the date of exercise of the Postponement Right; provided, however, that (A) in
                                                --------- -------             
that event, the Right to Offer Period shall be extended to the 72-month
anniversary of Closing and (B) the Postponement Right shall not limit Sprint's
right to respond to a Third-Party Offer as set forth in Section 4.03 hereof.

          (iii)  The Board of Directors of Newco and Sprint shall negotiate the
amount of the Fair Private Market Value to be paid pursuant to the Sprint Offer
in good faith and Sprint shall not make any public announcements relating to
this offer without the prior written consent of the Board unless required by law
or legal process.  In the event the two parties are unable to agree on the
amount of the Fair Private Market Value within 30 days after submission of the
Sprint Offer to the Board, the parties shall agree to be bound to the valuation
arrived at pursuant to the following formula:

                    (A) Two appraisals shall be made by recognized investment
          banks, one selected by each of Sprint and Newco (the "Initial
          Values");

                    (B) If the lower of the Initial Values is more than 10% less
          than the higher of the Initial Values, a third independent valuation
          will be made by an investment bank selected jointly by Sprint and
          Newco (the "Independent Valuation").  Otherwise, the Fair Private
          Market Value shall be the average of the Initial Values; and

                    (C) If the Independent Valuation is greater than or less
          than the average of the Initial Values by more than 5%, the Fair
          Private Market Value shall be deemed to equal the average of the two
          closest valuations.  If the Independent Valuation does not differ by
          such amount, the Independent Valuation shall be the Fair Private
          Market Value.

          (c) Upon the determination of the amount of the Fair Private Market
Value, Sprint shall be obligated to commence and effectuate the Sprint Offer,
provided, however, that Sprint shall have a one-time right ("Walk-Away Right"),
- --------  -------                                                              
exercisable by written notice to Newco

                                       21
<PAGE>
 
given within 14 days after the receipt of the determination of Fair Private
Market Value, to determine not to proceed to make such Sprint Offer; provided,
                                                                     -------- 
further, however, that Sprint may not exercise the Walk-Away Right in connection
- -------                                                                         
with a Sprint Offer made pursuant to Section 4.03(b) or Section 4.04(b) hereof.
If Sprint does not exercise such Walk-Away Right, the Board of Directors shall,
if an Intervening Offer is not then outstanding, (i) support the Sprint Offer by
approving and recommending it to Newco stockholders and (ii) cause Newco to take
all steps reasonable and necessary to facilitate consummation of such Sprint
Offer.  If Sprint exercises such Walk-Away Right, all Affiliated Equity Holders,
Newco, the Company and all of their officers, directors, employees,
representatives and agents shall be obligated to protect and hold in strict
confidence the amount of the Fair Private Market Value determined as set forth
above unless disclosure thereof is required by law or legal process.

          (d)  [Reserved.]

          (e) (i)  At such time as a Third-Party Offer shall constitute an
Intervening Offer, (A) Sprint shall be released from its obligation to commence
and effectuate the Sprint Offer, and (B) Newco shall be released from its
obligation to support and facilitate consummation of the Sprint Offer.
Notwithstanding the foregoing, Sprint shall be entitled, at any time prior to
consummation of the Intervening Offer, to make a Qualified Offer.  In such
event, the most recent Third-Party Offer shall cease to constitute an
Intervening Offer.

          (ii) If an Intervening Offer is undertaken, in whole or in part, in
the form of a tender offer, at the consummation of such tender offer, the
offeror shall have an option, exercisable for a period of 20 days following the
consummation of such tender offer, to purchase from all Affiliated Equity
Holders, at the tender offer price, in the aggregate, the Specified Number of
Equity Securities less the number of Equity Securities that have already been
tendered by the Affiliated Equity Holders.

          (iii)  If, in the event of an Intervening Offer, such offer, a
Business Combination underlying such offer or any related matter that must be
approved by the stockholders of Newco in order for such offer to be effectuated
is brought before the stockholders of Newco for their consideration and
approval, Sprint and Sprint L.P. shall be obligated, in the event a Qualified
Offer has not been made within five days prior to the date of the stockholders'
meeting, to cast (or to cause to be cast by their Affiliated Equity Holders) in
favor of the Intervening Offer, the Business Combination or any such related
matter such number of votes as is equal to the Specified Number of Equity
Securities, provided, that, such Business Combination does not constitute a
            --------  ----                                                 
Discriminatory Transaction.

          (f) None of the Affiliated Equity Holders shall be entitled to
exercise rights of appraisal under Section 262 of the Delaware General
Corporation Law (or any successor thereto) as to any of the Equity Securities
owned by them in respect of any Business Combination effected in connection with
an Intervening Offer.

          SECTION 4.03.  Third-Party Offers.  (a)  Newco shall promptly provide
                         ------------------                                    
to Sprint written notice (the "Offer Notice") of its receipt of an Offer and, in
reasonable detail, the proposed terms thereof.  Upon receipt of such Offer, the
Board of Directors shall determine that:

                                       22
<PAGE>
 
          (i) such Offer is in the best interests of Newco's stockholders and
that it intends to recommend such Offer to the stockholders (a "Recommended
Third-Party Offer");

          (ii) such Offer is not in the best interests of Newco's stockholders
and that it intends not to recommend such Offer to the stockholders or no
position is taken with respect thereto under Rule 14e-2 of the Exchange Act
within 10 business days of the Board's receipt thereof (a "Non-Recommended
Third-Party Offer" and, together with a Recommended Third-Party Offer, a "Third-
Party Offer"); or

          (iii)  insufficient information exists on which to base any such
recommendation, in which event the Board may take such action as it deems
necessary or advisable to develop such additional information; provided, that,
                                                               --------  ---- 
if upon developing such additional information, the Board decides to recommend
or not to recommend such Offer to the stockholders, then it shall promptly
notify Sprint of such decision and, at such time, the Offer shall be deemed a
Recommended Third-Party Offer or a Non-Recommended Third-Party Offer, as
appropriate.

          (b) For a period of ten days following the giving of the Offer Notice,
Newco may not enter into a definitive agreement with respect to the Offer.  Upon
receipt of such Offer Notice, Sprint shall be released from its obligations
under Section 4.01 insofar as necessary to permit Sprint, subject to the terms
and conditions of this Agreement and if an Intervening Offer is not then
outstanding, to make, pursue and consummate a Sprint Offer. However, Newco shall
not be obligated to deem a bona fide, written offer from any Person other than
an Affiliated Equity Holder to effect a Business Combination to be an Offer and
to provide the Offer Notice required by Section 4.03(a) until the earlier of (i)
the date on which Newco determines that such offer meets the requirements of an
Offer and that Newco intends to pursue such Offer with the objective of having
it become a Recommended Third-Party Offer, or (ii) ten days after the date Newco
receives such offer, unless previously rejected by Newco.

          (c) In the case of an Offer that is a Recommended Third-Party Offer,
Sprint shall have the option to make a Qualified Offer, and Newco shall not
adopt any takeover defenses (unless amended or waived to permit Sprint to make a
Qualified Offer), enter into any agreement or take any other action if such
action would, in either case, materially impair Sprint's ability to make and
consummate a Qualified Offer or materially increase Sprint's costs of
consummating such Qualified Offer; provided, however, that, notwithstanding the
                                   --------  -------                           
foregoing, Newco shall be permitted to enter into a definitive agreement with
respect to a Recommended Third-Party Offer that provides for a termination fee
not to exceed 3% of the consideration to be received per share of Newco Common
Stock multiplied by the number of shares of Newco Common Stock outstanding on a
Fully-Diluted Basis (less the number of shares beneficially owned by the
offering party), plus customary fees and expenses, except that the definitive
agreement with respect to such Recommended Third-Party Offer shall provide that
such fee shall not be payable by Sprint if it makes a Qualified Offer within 72
hours of the first public announcement of such Recommended Third-Party Offer
(provided, that, there are at least two business days within such period).  In
- ---------  ----                                                               
the case of an Offer that is a Non-Recommended Third-Party Offer, Sprint shall
have the option to make a Qualified Offer, but only if the Board of Directors of
Sprint reasonably determines in good faith upon consultation with independent
legal

                                       23
<PAGE>
 
counsel and its outside financial advisors that the conditions to the Non-
Recommended Third-Party Offer are reasonably likely to be satisfied and the
offer consummated.

          If Sprint has the option to make a Qualified Offer and does so more
than five days prior to the date of a stockholders meeting held to consider a
Third-Party Offer or an Intervening Offer, the Board of Directors shall, if an
Intervening Offer is not then outstanding, (i) support the Qualified Offer by
approving and recommending it to Newco's stockholders and (ii) cause Newco to
take all steps reasonable and necessary to facilitate the consummation of the
Qualified Offer.

          (d) (i) At such time as a Third-Party Offer made subsequent to a
Qualified Offer shall constitute an Intervening Offer, Newco's obligations to
support and facilitate a Qualified Offer as set forth in Section 4.03(c) above
shall terminate and Newco shall be free to consider and act upon such
Intervening Offer.  Notwithstanding the foregoing, Sprint shall be entitled, at
any time prior to consummation of the Intervening Offer, to make another
Qualified Offer.  In the event Sprint makes such Qualified Offer, the most
recent Third-Party Offer shall cease to constitute an Intervening Offer.

          (ii) If a Recommended Third-Party Offer or an Intervening Offer, as
the case may be, is undertaken, in whole or in part, in the form of a tender
offer, at the consummation of such tender offer, the offeror shall have an
option, exercisable for a period of 20 days following the consummation of such
tender offer, to purchase from any Affiliated Equity Holder, at the tender offer
price, the Specified Number of Equity Securities less the number of Equity
Securities that have already been tendered by the Affiliated Equity Holders.

          (iii)  If, in the event of a Recommended Third-Party Offer or an
Intervening Offer, as the case may be, such offer, a Business Combination
underlying the such offer or any related matter that must be approved by the
stockholders of Newco in order for the offer to be effectuated is brought before
the stockholders of Newco for their consideration and approval, Sprint and
Sprint L.P. shall be obligated, in the event a Qualified Offer has not been made
within five days prior to the date of the stockholders' meeting, to cast (or to
cause to be cast by their Affiliated Equity Holders) in favor of the Recommended
Third-Party Offer or the Intervening Offer, as applicable, the Business
Combination or any such related matter such number of votes as is equal to the
Specified Number of Equity Securities, provided, that, such Business Combination
                                       --------  ----                           
does not constitute a Discriminatory Transaction.

          (e) None of the Affiliated Equity Holders shall be entitled to
exercise rights of appraisal under Section 262 of the Delaware General
Corporation Law (or any successor thereto) as to any of the Equity Securities
owned by them in respect of any Business Combination effected in connection with
a Recommended Third-Party Offer or an Intervening Offer.

          SECTION 4.04.  Solicitation of Offers.
                         ---------------------- 

          (a) From the Closing Date until the earlier of the 27-month
anniversary of Closing or the termination of this Agreement in accordance with
its terms, Newco shall not and shall not authorize or permit any officer,
director or employee of, or any investment banker,

                                       24
<PAGE>
 
attorney or other advisor or representative of, Newco or its Affiliates, to, (i)
solicit or initiate, or encourage the submission of, any Acquisition Proposal,
or (ii) participate in any discussions or negotiations regarding, or furnish to
any person any information with respect to, or take any other action to expedite
any inquiries or the making of any proposal that constitutes, or may reasonably
be expected to lead to, any Acquisition Proposal; provided, however, that to the
                                                  --------  -------             
extent required by the fiduciary obligations of the Board of Directors, as
determined in good faith by the Board based on the advice of outside counsel,
Newco may (A) in response to any unsolicited request therefor, furnish
information with respect to Newco or any Subsidiary to any person pursuant to a
customary confidentiality agreement and discuss such information with such
person, (B) upon receipt by Newco of an Acquisition Proposal, following delivery
to Sprint of the notice required pursuant to Section 4.05, participate in
negotiations regarding such Acquisition Proposal, and (C) enter into an
agreement respecting such Acquisition Proposal or enter into any related
agreements or take any other action ancillary thereto, which agreements or
actions are consistent with the requirements of Section 4.03(c) hereof.

          (b) After the 27-month anniversary of Closing until the earlier of the
39-month anniversary of Closing or the termination of this Agreement in
accordance with its terms, Newco shall not, and shall not authorize or permit
any officer, director or employee of, or any attorney or other advisor or
representative of, Newco or its Affiliates, to take any of the actions limited
by Section 4.04(a) except through an investment banking firm formally engaged by
Newco (or actively working with Newco) for such purpose; provided, that, 30 days
                                                         --------  ----         
prior to so engaging an investment banking firm for that purpose or to the
commencement of such work, Newco shall notify Sprint of its intention to effect
such engagement or commence such work, and Sprint shall be permitted to prepare
and make a Sprint Offer as defined in Section 4.02(b) hereof for so long as such
investment banking firm remains engaged by, or is working for, Newco for that
specific purpose; provided, that, subject to the terms and conditions of the
                  --------  ----                                            
Sprint Offer and if an Intervening Offer is not then outstanding, Sprint will
pursue any Sprint Offer made pursuant hereto for so long as necessary to permit
such Sprint Offer to be consummated.  Newco shall furnish Sprint with copies of
all information provided by Newco to such investment banking firm at the time
such information is provided to such investment banking firm, subject to Sprint
entering into a customary confidentiality agreement with respect to such
information.

          (c)  [Reserved.]

          (d) Nothing contained in this Section 4.04 shall (i) prohibit Newco
from taking and disclosing to its stockholders a position contemplated by Rule
14e-2 under the Exchange Act or (ii) preclude Newco or the Board from giving due
consideration or responding to any Acquisition Proposal if the failure to so
respond would, in the judgment of the Board of Directors, exercised in good
faith upon the advice of Newco's outside legal counsel, cause the Board to be in
violation of its fiduciary duties to the holders of Equity Securities.

          (e) Nothing contained in this Section 4.04 shall adversely affect
Sprint's right to respond to a Third-Party Offer under Section 4.03 hereof,
including Sprint's unwillingness to provide a Sprint Offer under Section 4.04(b)
above.

                                       25
<PAGE>
 
          SECTION 4.05.  Notice.  The Board of Directors of Newco shall (i)
                         ------                                            
promptly notify Sprint in writing of (A) its receipt of an Acquisition Proposal,
(B) any inquiries or discussions that may reasonably be expected to lead to an
Acquisition Proposal, (C) the execution by Newco of a confidentiality agreement
with respect to an Acquisition Proposal, or (D) the furnishing of any
confidential information in contemplation of an Acquisition Proposal, whether or
not pursuant to a confidentiality agreement; (ii) describe the terms and
conditions of any Acquisition Proposal in reasonable detail; (iii) provide to
Sprint copies of any definitive agreements with respect to any Acquisition
Proposal and any confidentiality agreements with respect thereto; and (iv)
subject to Sprint's obligation to hold such information in strict confidence
(except as required by law or legal process), make available to Sprint all
information made available to the party making the Acquisition Proposal at the
same time it is provided to such party.

          SECTION 4.06.  Break-Up Fee.  Upon consummation of an Intervening
                         ------------                                      
Offer, Newco shall be obligated to pay Sprint a termination fee equal to 3% of
the aggregate consideration to have been paid in the Sprint Offer or the
Qualified Offer to Unaffiliated Equity Holders plus reasonable fees and
expenses.

          SECTION 4.07.  Takeover Defenses.  Newco shall not take any action or
                         -----------------                                     
omit to take an action, and shall cause its Significant Subsidiaries or any of
its or their respective officers, directors, employees, representatives and
agents to take no action or omit to take action, that would result in (i) any
Affiliated Equity Holder being deemed an "acquiring person" or similar
designation under any Stockholders' Rights Plan (commonly known as a "poison
pill") or otherwise being adversely affected by such plan, (ii) any Affiliated
Equity Holder being prejudiced by Newco through its action or its failure to act
under any applicable state takeover statute, including Section 203 of the
Delaware General Corporation Law, or (iii) otherwise causing any takeover
defense to materially impair or obstruct, or prevent (either legally or
financially) the exercise by any Affiliated Equity Holder of rights granted
pursuant to this Article IV; provided, however, that (A) Newco may take action
                             --------  -------                                
or omit to take action having any such consequence to the extent that such
consequence occurs upon a material breach or violation by any Affiliated Equity
Holder of this Agreement and (B) the execution by Newco, the Company or any
Significant Subsidiary of a definitive agreement in respect of a Business
Combination that is consistent with the requirements of Section 4.03(c) hereof
shall not be deemed to have the effects described in this Section 4.07.

                                   ARTICLE V

                         TRANSFER OF EQUITY SECURITIES
                         -----------------------------

          SECTION 5.01.  Transfer of Equity Securities.  (a) None of the
                         -----------------------------                  
Affiliated Equity Holders shall, directly or indirectly, sell, transfer or
otherwise dispose of any Equity Securities except (i) pursuant to a registered
underwritten public offering in accordance with the Registration Rights
Agreement, (ii) in accordance with Rule 144 promulgated under the Securities
Act, (iii) to any direct or indirect Subsidiary of Sprint and (iv) in a
transaction effected in accordance with the so-called "Section 4(1  1/2)"
exemption under the Securities Act.

                                       26
<PAGE>
 
          (b) Subject to the provisions of Section 4.02(e), 4.03(d) and 4.04(b)
hereof, and notwithstanding the permissive aspects of items (i) through (iv) of
Section 5.01(a) hereof, none of the Affiliated Equity Holders shall, directly or
indirectly, sell, transfer or otherwise dispose of any interest in any Equity
Securities to any purchaser or group (within the meaning of Rule 13d-5(b) under
the Exchange Act) of purchasers, if, after giving effect to such sale, such
purchaser or group of purchasers would, to Sprint's knowledge, own, or have the
right to acquire, 5% or more of the Equity Securities then outstanding, except
to any Person that is not obligated (or would not, by virtue of such purchase,
reasonably be anticipated to be obligated) to file a Schedule 13D with the SEC
pursuant to each of paragraphs (b) and (e) of Rule 13d-1 under the Exchange Act.

          (c) None of the Affiliated Equity Holders shall sell, transfer or
otherwise dispose of any of the capital stock of any Subsidiary of such
Affiliated Equity Holder that owns Equity Securities, except to another
Subsidiary of Sprint, and then only if such Subsidiary complies with the
transfer and assignment provisions of Section 7.05 hereof.

          (d) Purported transfers of Equity Securities that are not in
compliance with this Article V shall be of no force or effect.

          (e) Notwithstanding the foregoing, sales, transfers and dispositions
among a group consisting only of Affiliated Equity Holders shall not constitute
a breach of this Section 5.01, provided that each of such Affiliated Equity
Holders complies with the transfer and assignment provisions of Section 7.05
hereof.

                                  ARTICLE VI

                   REPRESENTATIONS, WARRANTIES AND COVENANTS
                   -----------------------------------------

          SECTION 6.01.  Representations and Warranties.  Each of Sprint and
                         ------------------------------                     
Sprint L.P. represents and warrants to the Company and Newco as follows:

          (a) Sprint is a corporation, and Sprint L.P. is a partnership, that is
duly organized, validly existing and in good standing under the laws of the
jurisdiction in which it is incorporated or organized and has the power and
authority to execute, deliver and perform this Agreement and to grant the
Irrevocable Proxy.

          (b) Each of this Agreement and the Irrevocable Proxy has been duly
executed and delivered by each of Sprint and Sprint L.P., and constitutes a
valid and binding agreement or irrevocable proxy (coupled with an interest),
respectively, and is enforceable in accordance with its respective terms, except
to the extent that the enforcement of this Agreement or the Irrevocable Proxy
may be limited by (i) bankruptcy, insolvency, reorganization, moratorium or
other similar laws now or hereafter in effect relating to creditors' rights
generally, and (ii) general principles of equity regardless of whether
enforceability is considered in a proceeding in equity or at law.

          (c) The execution and delivery of this Agreement and of the
Irrevocable Proxy did not, and the performance thereof, without obtaining the
consent of any third party will not,

                                       27
<PAGE>
 
conflict with, or result in any violation of, or default (with or without notice
or lapse of time, or both) under (i) in the case of Sprint, the certificate of
incorporation or bylaws of Sprint, (ii) in the case of Sprint L.P., the
partnership agreement of Sprint L.P., (iii) any loan or credit agreement, note,
bond, mortgage, indenture, lease or other agreement, instrument, permit or
license applicable to either Sprint or Sprint L.P. or any of the Equity
Securities owned by either, or (iv) any federal, state, local, municipal,
foreign, international, multinational or other judicial or administrative order,
judgment, decree, constitution, law ordinance, common law of Delaware or Kansas,
regulation, statute or treaty applicable to either of Sprint or Sprint L.P. or
any of the Equity Securities owned by either.  No consent, approval, order or
authorization of, or registration, declaration or filing with, any Governmental
Entity (as defined in the Investment Agreement) or any party to a contract is
required by or with respect to either Sprint or Sprint L.P. or in connection
with the execution and delivery of this Agreement or the applicable Irrevocable
Proxy.

          (d) Except as set forth in this Agreement and the Ancillary
Agreements, none of the Equity Securities owned by either of Sprint or Sprint
L.P. is subject to (i) any preemptive rights, (ii) right of first refusal, (iii)
right to purchase, acquire or vote, (iv) power of attorney, or (v) any other
right.

          (e) Each of Sprint and Sprint L.P. has the sole power, right and
authority to vote and to tender the Equity Securities beneficially owned by it
in accordance with the terms of this Agreement and the Irrevocable Proxy.

          (f) Each of Sprint and Sprint L.P. will take all action necessary to
cause other Affiliated Equity Holders bound by the terms of this Agreement to
abide by the terms of this Agreement.

          SECTION 6.02.  Stock Ownership Reports.  The following informational
                         -----------------------                              
reporting requirements shall apply during the term of this Agreement:

          (a) Newco Stock Report.  Newco shall provide to Sprint in writing a
              ------------------                                             
monthly report (the "Newco Outstanding Stock Report") setting forth certain
information and data pertaining to Newco for each calendar month (a "Month"),
which shall be delivered to Sprint on or before the 15th day of the next
following month (a "Report Delivery Date").  The Newco Outstanding Stock Report
shall be reasonable in detail and shall clearly set forth all of the following
information:

               (i) the number of New Securities issued by Newco during the
Month;

               (ii) the number of New Securities issued by Newco as Transaction
Securities during the Month;

               (iii)  the total number of shares of Newco Common Stock
outstanding on the last day of the Month;

          (iv) the total number of shares of Newco Common Stock, on a Fully-
Diluted Basis, outstanding on the last day of the Month; and

                                       28
<PAGE>
 
          (v) the total number of Available Top-Up Shares issuable in respect of
Transaction Securities issued in the Month and Newco's calculation of the
Dilution Factor with respect to any such issuance of Transaction Securities.

          (b) Sprint Ownership Report.  Sprint shall provide to Newco in writing
              -----------------------                                           
a monthly report setting forth certain information and data pertaining to the
ownership of Equity Securities of Newco by Affiliated Equity Holders (the
"Sprint Ownership Report"), which shall be delivered to Newco on or before the
Report Delivery Date; provided, however, that Sprint's only obligation with
                      --------  -------                                    
respect to furnishing a Sprint Ownership Report for a month in which no
ownership changes occurred shall be to notify Newco in writing of that fact.
The Sprint Ownership Report shall be reasonable in detail and shall clearly set
forth in reasonable detail all of the following information:

                (i)   the number of shares of Equity Securities of Newco bought
and sold in accordance with the terms of the Governance Agreement during such
Month;

                (ii)  Sprint's calculation of the number of Available Top-Up
shares with respect to issuances of Transactional Securities, as of the last day
of the Month; and

                (iii) Sprint's calculation of Sprint's Percentage Interest as of
the last day of the Month.

          (c) Each Newco Outstanding Stock Report and Sprint Ownership Report
(individually, a "Report" and together, the "Reports") shall state the month to
which it applies, and shall be signed by an authorized officer of the applicable
party.  Newco represents and warrants that each Newco Outstanding Stock Report
shall be true and correct in all material respects on the Report Delivery Date.
Sprint represents and warrants that each Sprint Ownership Report shall be true
and correct in all material respects on the Report Delivery Date.  If a Report
is determined to be incorrect in any respect at any time after delivery to the
other party, the submitting party must resubmit a true and accurate replacement
Report which identifies all such corrections; provided, however, that the
                                              --------  -------          
submission of any replacement Report or the failure of any Party to submit such
replacement Report shall not constitute a waiver by any other Party hereto of
any substantive rights otherwise existing under this Agreement.

                                  ARTICLE VII

                                 MISCELLANEOUS
                                 -------------

          SECTION 7.01.  Effectiveness; Termination; Survival.  (a) This
                         ------------------------------------           
Agreement shall become effective at the Closing.  This Agreement shall terminate
at the earliest of the following to occur:  (i) the termination of the
Investment Agreement in accordance with its terms; (ii) such time as Sprint's
Percentage Interest is greater than 90% or less than the Lower Threshold; (iii)
the expiration of the Sprint Right to Offer Period; (iv) the first date on which
any Person or 13D Group (other than Affiliated Equity Holders) is determined (A)
to beneficially own or control more than 35% of the Equity Securities
outstanding by virtue of the acquisition of such securities pursuant to a Third-
Party Offer if the rights granted and process contemplated by Article IV hereof
have been effected in accordance with the terms thereof or (B) to beneficially

                                       29
<PAGE>
 
own or control 50% or more of the Voting Equity Securities outstanding; (v) upon
the termination of the Marketing Agreement in accordance with Sections
24(b)(ii), 24(c), 24(d)(i), or 24(d)(ii) thereof; or (vi) upon the exercise by
any "Holder" of "Registrable Securities" under the Registration Rights Agreement
of registration rights (demand or incidental) held by Person thereunder.

          (b) Notwithstanding the termination of this Agreement as set forth in
Section 7.01(a) above, until the sixth anniversary of the Closing Date and
thereafter for so long as Sprint's Percentage Interest is greater than the Lower
Threshold, then Sprint shall still be subject to the restrictions set forth in
Sections 4.01 and 5.01 hereof (the "Standstill Provisions") and, for so long as
Sprint's Percentage Interest remains greater than the Lower Threshold, Sprint
shall still have rights pursuant to this Agreement under Section 2.01 (subject
to termination of such rights by virtue of Section 2.01(d)) and Section 3.01(b).
In such event, the Standstill Provisions, Section 2.01, Section 3.01(b), Article
VII and any definition or definitional provision of any of the foregoing
provisions of this Agreement shall remain in full force and effect until such
time as Sprint's Percentage Interest is less than the Lower Threshold (provided,
                                                                       -------- 
that, the use of any such definitions for such limited purpose shall not give
- ----                                                                         
rise to any of the substantive rights or obligations that relate to such
definitions); provided, however, that during any period in which the Standstill
              --------  -------                                                
Provisions survive, Sprint and its Affiliates may directly approach the Board of
Directors of Newco in order to make an offer to effect a Business Combination.

          SECTION 7.02.  Notices.  Unless otherwise provided herein, any notice,
                         -------                                                
request, waiver, instruction, consent or document or other communication
required or permitted to be given by this Agreement shall be effective only if
it is in writing and (a) delivered by hand or sent by certified mail, return
receipt requested, (b) if sent by a nationally-recognized overnight delivery
service with delivery confirmed, or (c) if telexed or telescoped, with receipt
confirmed as follows:

        The Company:          3100 New York Drive
                              Pasadena, California 91107
                              Attn.: President and CEO
                              Telecopy No.: 626/296-4161

        With a copy to:       Hunton & Williams
                              NationsBank Plaza, Suite 4100
                              600 Peachtree Street, N.E.
                              Atlanta, Georgia  30308-2216
                              Attn:  Scott M. Hobby, Esq.
                              Telecopy No.: (404) 888-4190

        Newco and Newco Sub:  3100 New York Drive
                              Pasadena, California 91107
                              Attn: President and CEO
                              Telecopy No.: 626/296-4161

                                       30
<PAGE>
 
        with a copy to:       Hunton & Williams
                              NationsBank Plaza, Suite 4100
                              600 Peachtree Street, N.E.
                              Atlanta, Georgia  30308-2216
                              Attn: Scott M. Hobby, Esq.
                              Telecopy No.: (404) 888-4190

        Sprint:               Sprint Corporation
                              2330 Shawnee Mission Parkway
                              Westwood, Kansas 66205
                              Attn:  Chief Financial Officer
                              Telecopy No.: (913) 624-8426

        with a copy to:       Sprint Corporation
                              2330 Shawnee Mission Parkway
                              Westwood, Kansas 66205
                              Attn:  Corporate Secretary
                              Telecopy No.: (913) 624-8233

        with an additional 
        copy to:              Stinson, Mag & Fizzell, P.C.
                              1201 Walnut, Suite 2800
                              P.O. Box 419251
                              Kansas City, Missouri  64141-6251
                              Attn:  John A. Granda, Esq.
                              Telecopy No.: (816) 691-3495

The parties hereto ("Parties") shall promptly notify each other of any change in
their respective addresses or facsimile numbers or of the Person or office to
receive notices, requests or other communications under this Section 7.02.
Notice shall be deemed to have been given as of the date when so personally
delivered, when actually delivered by the U.S. Postal Service at the proper
address, the next day when delivered during business hours to an overnight
delivery service properly addressed or when receipt of a telex or telecopy is
confirmed, as the case may be, unless the sending party has actual Knowledge
that such notice was not received by the intended recipient.

          SECTION 7.03.  Entire Agreement.  This Agreement and, upon execution
                         ----------------                                     
by all Parties thereto, the Investment Agreement and the Ancillary Agreements,
together with the respective Schedules and Exhibits hereto and thereto, embody
the entire agreement and understanding of the Parties in respect to the matters
contemplated hereby and thereby and supersedes and renders null and void all
other prior agreements and understandings, written and oral, with respect to the
subject matter hereof and thereof, provided, that, this provision shall not
                                   --------  ----                          
abrogate any other written agreement between the Parties executed simultaneously
with this Agreement.  No Party shall be liable or bound to any other Party in
any manner by any promises, conditions, representations, warranties, covenants,
agreements and understandings, except as specifically set forth herein or
therein.

                                       31
<PAGE>
 
          SECTION 7.04.  Waiver.  Except as otherwise permitted in this
                         ------                                        
Agreement, the terms or conditions of this Agreement may not be waived unless
set forth in a writing signed by the Party entitled to the benefits thereof.  No
waiver of any of the provisions of this Agreement shall be deemed or shall
constitute a waiver of such provision at any time in the future or a waiver of
any other provision hereof.  The rights and remedies of the Parties are
cumulative and not alternative.  Except as otherwise permitted in this
Agreement, neither the failure nor any delay by any Party in exercising any
right, power or privilege under this Agreement, any of the Ancillary Agreements
or the documents referred to in this Agreement or therein will operate as a
waiver of such right, power or privilege, and no single or partial exercise of
any such right, power or privilege will preclude any other or further exercise
of such right, power or privilege or the exercise of any other right, power or
privilege.

          SECTION 7.05.  Successors and Assigns.  Neither this Agreement nor any
                         ----------------------                                 
of the rights, interests or obligations under this Agreement shall be assigned
or transferred, in whole or in part, by any of the Parties without the prior
written consent of the other Parties; provided, however, that such assignment or
                                      --------  -------                         
transfer may be made by (i) by Sprint or Sprint L.P. to any of their respective
Affiliates who are "controlled" (as such term is defined in Rule 12b-2
promulgated pursuant to the Exchange Act) by Sprint or Sprint L.P., or (ii)
pursuant to any merger or sale of substantially all of the assets of Sprint or
such Affiliates (or any transaction having such effect) that is pursuant to an
agreement entered into after the Closing; provided, however, that, in either
                                          --------  -------                 
such case, before such assignment may take effect, the proposed successor or
assignee agrees in writing to be bound by all of the provisions hereof and
executes an Irrevocable Proxy.  Subject to the preceding sentence, this
Agreement will be binding upon, inure to the benefit of, and be enforceable by,
the parties and their respective successors and assigns.  Any attempted
assignment in violation of this Section 7.05 shall be void.

          SECTION 7.06.  Governing Law.  This Agreement shall be construed in
                         -------------                                       
accordance with and governed by the laws of the State of Delaware, without
regard to conflict of laws principles.

          SECTION 7.07.  Severability.  If any term or provision of this
                         ------------                                   
Agreement or the application thereof to either party or set of circumstances
shall, in any jurisdiction and to any extent, be finally held invalid or
unenforceable, such term or provision shall only be ineffective as to such
jurisdiction, and only to the extent of such invalidity or unenforceability,
without invalidating or rendering unenforceable any other terms or provisions of
this Agreement or under any other circumstances, and the Parties shall negotiate
in good faith a substitute provision which comes as close as possible to the
invalidated or unenforceable term or provision, and which puts each party in a
position as nearly comparable as possible to the position it would have been in
but for the finding of invalidity or unenforceability, while remaining valid and
enforceable.

          SECTION 7.08.  Counterparts.  This Agreement may be executed in one or
                         ------------                                           
more counterparts each of which when so executed and delivered shall for all
purposes be deemed to be an original but all of which, when taken together,
shall constitute one and the same Agreement.

                                       32
<PAGE>
 
          SECTION 7.09.  Headings.  The table of contents, captions and headings
                         --------                                               
used in this Agreement are inserted for convenience only and shall not be deemed
to constitute part of this Agreement or to affect the construction or
interpretation hereof.

          SECTION 7.10.  No Third-Party Beneficiaries.  Nothing in this
                         ----------------------------                  
Agreement or any Ancillary Agreements, express or implied, shall create or
confer upon any Person (including but not limited to any employees), other than
the Parties or their respective successors and permitted assigns, any legal or
equitable rights, remedies, obligations, liabilities or claims under or with
respect to this Agreement except as expressly provided herein.

          SECTION 7.11.  Interpretation.  (a)  Unless specifically stated
                         --------------                                  
otherwise, references to Articles, Sections, Exhibits and Schedules refer to
Articles, Sections, Exhibits and Schedules in this Agreement.  References to
"includes" and "including" mean "includes without limitation" and "including
without limitation."

          (b) Each Party is a sophisticated legal entity that was advised by
experienced counsel and, to the extent it deemed necessary, other advisors in
connection with this Agreement.  Accordingly, each Party hereby acknowledges
that no Party has relied or will rely in respect of this Agreement or the
transactions contemplated hereby upon any document or written or oral
information previously furnished to or discovered by it or its representatives,
other than this Agreement or the documents and instruments delivered at the
Closing.

          (c) No provision of this Agreement shall be interpreted in favor of,
or against, either of the Parties by reason of the extent to which either such
Party or its counsel participated in the drafting thereof or by reason of the
extent to which any such provision is inconsistent with any prior draft hereof
or thereof.

          SECTION 7.12.  Inclusion of Information in Schedules.  The inclusion
                         -------------------------------------                
of any information in any disclosure schedule (i) shall not be deemed an
admission that any such information is material for purposes of the
representation and warranty to which it relates or any other representation and
warranty or for any other purpose related to this Agreement or any Ancillary
Agreement or the transactions contemplated hereby or thereby, including, without
limitation, for purposes of any covenants, closing conditions or any other
remedies the Parties may have, and (ii) shall not be used or interpreted in any
manner to create a standard of materiality for any such purpose.

          SECTION 7.13.  Exclusive Jurisdiction and Consent to Service of
                         ------------------------------------------------
Process. The Parties agree that any legal action arising out of or relating to
- -------                                                                       
this Agreement or the transactions contemplated hereby or thereby shall be
instituted by the Parties only in a Delaware state court or a federal court
sitting in that state, which shall be the exclusive venue of any such action.
Each Party waives any objection which such party may now or hereafter have to
the laying of venue of any such action, and irrevocably consents and submits to
the jurisdiction of any such court (and the appropriate appellate courts) in any
such action.  Any and all service of process and any other notice in any such
action shall be effective against such Party when transmitted in accordance with
Section 7.02.  Nothing contained herein shall be deemed to affect the right of
any Party to serve process in any manner permitted by applicable law.

                                       33
<PAGE>
 
          SECTION 7.14.  Amendment.  No amendment, modification or alteration of
                         ---------                                              
the terms or provisions of this Agreement or any Ancillary Agreement, including
any Schedules and Exhibits hereto or thereto, shall be binding unless the same
shall be in writing and duly executed by the Party against whom such amendment,
modification or alteration is sought to be enforced.

          SECTION 7.15.  Survival.  All of the representations, warranties,
                         --------                                          
covenants and agreements set forth in this Agreement shall survive the Closing.

          SECTION 7.16.  WAIVER OF JURY TRIAL.  THE COMPANY, NEWCO, SPRINT AND
                         --------------------                                 
SPRINT L.P. HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE ANY RIGHT THAT IT MAY
HAVE TO A TRIAL BY JURY IN ANY ACTION INVOLVING, DIRECTLY OR INDIRECTLY, ANY
MATTER (WHETHER SOUNDING IN TORT, CONTRACT OR OTHERWISE) IN ANY WAY ARISING OUT
OF, RELATED TO, OR CONNECTED WITH THIS AGREEMENT OR ANY ANCILLARY AGREEMENT OR
THE RELATIONSHIP ESTABLISHED HEREUNDER OR THEREUNDER.

          SECTION 7.17.  Specific Performance.  The Parties agree that immediate
                         --------------------                                   
irreparable damages for which there is no adequate remedy at law would occur in
the event that any provision of this Agreement is not performed in accordance
with the specific terms hereof or is otherwise breached.  It is accordingly
agreed that in the event of a failure by a party to perform its obligations
under this Agreement, the non-breaching Party shall be entitled to specific
performance through injunctive relief to prevent breaches of the provisions of
this Agreement and to enforce specifically the provisions of this Agreement in
any action instituted in any court having subject matter jurisdiction, in
addition to any other remedy to which such Party may be entitled, at law or in
equity.

          SECTION 7.18.  Voting Agreement; Proxy.  (a) To the extent this
                         -----------------------                         
Agreement constitutes a voting agreement in accordance with Section 218(c) of
the Delaware General Corporation Law, it is intended to comply therewith and be
enforceable thereunder.  The voting obligations of Sprint under this Agreement,
including without limitation, those set forth in Sections 2.02, 4.02 and 4.03
hereof, shall be irrevocable.

          (b) In order to ensure that the voting agreements set forth in
Sections 2.02, 4.02 and 4.03 hereof will be fulfilled, each of Sprint and Sprint
L.P. agrees to grant, and concurrently with the execution of this Agreement
hereby grants, to the Company and Newco, or either of them, an Irrevocable
Proxy, coupled with an interest, with respect to (a) the matters contemplated by
Section 2.02 hereof, all of the Equity Securities owned by Affiliated Equity
Holders and (b) with respect to the matters contemplated by Section 4.02 or
Section 4.03 hereof, the Specified Number of Equity Securities covered by such
voting agreements which Sprint or Sprint L.P. beneficially owns, as determined
under Rule 13d-3 of the Exchange Act, in each such case, for and in the name,
place and stead of such stockholder or any of its Affiliated Equity Holders, at
any annual or special meeting of the holders of Newco Common Stock and at any
adjournment or postponement thereof, or pursuant to any consent in lieu of a
meeting. The Irrevocable Proxy granted by each of the Sprint and Sprint L.P.
constitutes the valid and effective 

                                       34
<PAGE>
 
irrevocable proxy, coupled with an interest, of each of Sprint and Sprint L.P.
in respect of the Equity Securities beneficially owned by each of them, within
the meaning of Section 212(e) of the Delaware General Corporation Law; revokes
any proxy or proxies or powers of attorney heretofore given by either of them in
respect of such Equity Securities; shall remain in full force and effect and is
and shall be irrevocable until the termination of this Agreement and is coupled
with an interest and an integral part of the benefits and obligations of each of
Sprint and Sprint L.P. and the rights and benefits of the Company and Newco.

                                       35
<PAGE>
 
          IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the day and year first above written.

                              SPRINT CORPORATION

                              By: /s/ Theodore H. Schell
                                 --------------------------------------
                                 Name:  Theodore H. Schell
                                 Title: Vice President - Strategic Planning 
                                        and Corporate Development


                              SPRINT COMMUNICATIONS COMPANY L.P.

                              By:  U.S. Telecom, Inc., General Partner

                              By: /s/ Don A. Jensen
                                 --------------------------------------
                                 Name:  Don A. Jensen
                                 Title: Vice President and Secretary

                              EARTHLINK NETWORK, INC.

                              By: /s/ Charles G. Betty
                                 --------------------------------------
                              Name:   Charles G. Betty
                              Title:  President and CEO

                              NEWCO, INC.

                              By: /s/ Charles G. Betty
                                 --------------------------------------
                              Name:   Charles G. Betty
                              Title:  President and CEO



                   [SIGNATURE PAGE FOR GOVERNANCE AGREEMENT]

                                       36
<PAGE>
 
                                                                SCHEDULE 2.01 TO
                                                        THE GOVERNANCE AGREEMENT

                              Board of Directors
                              ------------------

Management Directors
- --------------------

Sky D. Dayton
C. Garry Betty

 

 


Independent Directors
- ---------------------

Sidney Azeez
Robert M. Kavner
Linwood A. Lacy, Jr.
Paul McNulty
Kevin M. O'Donnell
John W. Sidgmore
Reed E. Slatkin

<PAGE>
 
                  IRREVOCABLE PROXY COUPLED WITH AN INTEREST


     The undersigned hereby irrevocably appoint(s) EarthLink Network, Inc., a
Delaware corporation ("EarthLink Network"), or Newco, Inc., a Delaware
corporation ("Newco"), or either of them, as the proxy of the undersigned and
hereby grant(s) to EarthLink Network or Newco this irrevocable proxy coupled
with an interest ("Irrevocable Proxy") with respect to the following Equity
Securities of the undersigned or any Affiliated Equity Holder of the undersigned
that the undersigned owns of record or otherwise has the right to vote, with all
power and authority to vote and to execute and deliver written consents, in each
case in accordance with the terms of Sections 2.02, 4.02 and 4.03 of the
Governance Agreement to the extent specified below:

          (a) With respect to any matter contemplated by Section 2.02 of that
     certain Governance Agreement dated February 10, 1998 (the "Governance
     Agreement") by and among EarthLink Network, Newco, Sprint Corporation and
     Sprint Communications Company L.P., as to all Equity Securities owned by
     the undersigned or by any Affiliated Equity Holder of the undersigned;

          (b) With respect to any matter contemplated by Section 4.02 or Section
     4.03 of the Governance Agreement, as to the Specified Number of Equity
     Securities owned by the undersigned or by any Affiliated Equity Holder of
     the undersigned;

in each case, in the name, place and stead of the undersigned, and at any annual
or special meeting of stockholders of EarthLink Network or Newco or at any
adjournment or postponement thereof, or as to any action that can be taken by
written consent; and in each case to the same extent and with the same effect as
the undersigned might or could do under any applicable law or regulation
governing the rights and powers of stockholders of a Delaware corporation,
irrespective of whether the undersigned is present at such meeting.

          This Irrevocable Proxy constitutes a valid and effective irrevocable
proxy coupled with an interest of EarthLink Network and Newco in the Equity
Securities, within the meaning of Section 212(e) of the Delaware General
Corporation Law, of the undersigned in respect of the foregoing Equity
Securities and revokes any proxy or proxies heretofore given by the undersigned
in respect of any such Equity Securities.  This Irrevocable Proxy shall remain
in full force and effect and be irrevocable until termination of the Governance
Agreement.  Unless otherwise defined herein, all capitalized terms shall have
the meanings ascribed to them in the Governance Agreement.

<PAGE>
 
     Until such time as the Governance Agreement is terminated, this Irrevocable
Proxy shall continue to cover all Equity Securities sold, transferred or
otherwise disposed of after the date hereof other than in accordance with the
terms and provisions of the Governance Agreement.



Dated:  February    , 1998      SPRINT CORPORATION
                 ---

                              By:
                                 --------------------------------------
                              Name:
                                   ------------------------------------
                              Title:
                                    -----------------------------------



 
                              SPRINT COMMUNICATIONS COMPANY L.P.


                              By:  U.S. Telecom, Inc.

                              By:
                                 --------------------------------------
                                     General Partner


STATE OF          )
                  )  ss.
COUNTY OF         )
         ---------

          Sworn to and subscribed before me this ___ day of February, 1998 and
acknowledged before me as being the free act and deed of the above
signatory(ies).



 
                                 --------------------------------------
                                              Notary Public


My Commission expires:
                      ---------------------



            [SIGNATURE PAGE FOR IRREVOCABLE PROXY WITH AN INTEREST]


<PAGE>
                                                              EXHIBIT NO. (C)(3)

                                                                  EXECUTION COPY
                                                                  --------------

                            STOCKHOLDERS' AGREEMENT


     THIS STOCKHOLDERS' AGREEMENT (the "Agreement"), dated as of February 10,
1998, is entered into by and among, EARTHLINK NETWORK, INC., a Delaware
corporation (the "Company"), DOLPHIN, INC., a Delaware corporation ("NEWCO"),
SPRINT CORPORATION, a Kansas corporation ("Sprint"), SPRINT COMMUNICATIONS
COMPANY L.P., a Delaware limited partnership ("Sprint L.P.") and the persons
identified on Schedule I hereto, each of whom is a stockholder of the Company
(individually, a "Stockholder" and collectively, the "Stockholders").

                                R E C I T A L S

     A.   WHEREAS, the respective Boards of Directors of Sprint and the Company
have determined to enter into a strategic relationship in the area of Internet
access and related services and Sprint will make investments in Newco and the
Company in connection with the Merger (as defined below) of Dolphin Sub, Inc., a
Delaware corporation ("Newco Sub") and the Company in order to enhance the
capabilities for growth and financial and strategic success;

     B.   WHEREAS, pursuant to an Investment Agreement, dated as of February 10,
1998, among Sprint, Sprint L.P., the Company, Newco and Newco Sub (the
"Investment Agreement"), Sprint proposes to make a tender offer (as it may be
amended from time to time as permitted under the Investment Agreement, with the
Company's consent, if required under the Investment Agreement (the "Tender
Offer")), to purchase 1,250,000 shares of common stock, par value $.01 per
share, of the Company (the "Common Stock"), for an aggregate cash consideration
of $56,250,000 and at a price per share of Common Stock of $45 net to each
seller in cash, upon the terms and subject to the conditions set forth in the
Investment Agreement; and the Board of Directors of the Company has approved the
Tender Offer and the other transactions contemplated by the Investment Agreement
and is recommending that the Company's stockholders who wish to receive cash for
their shares of Common Stock accept the Tender Offer;

     C.   WHEREAS, immediately following the closing of the Tender Offer, Sprint
L.P. proposes to purchase 4,102,941 shares of Series A Convertible Preferred
Stock, par value $.01 per share of Newco (the "Convertible Preferred Stock") in
exchange for (i) an aggregate cash consideration of $23,750,000, (ii) the
assignment to Newco of 100% of the Sprint Internet Passport Subscribers, and
(iii) entering into a network agreement whereby Newco and the Company will
utilize Sprint L.P.'s long-distance network under specified terms and
conditions;

     D.   WHEREAS, Sprint, Sprint L.P., the Company and Newco will enter into a
marketing agreement whereby Newco and the Company will utilize the Sprint brand
under specified terms and conditions, and will, inter alia, have the right to 
                                                ----- ----                
use Sprint L.P. distribution channels under specified terms and conditions and
agree to sell certain Sprint products;

     E.   WHEREAS, Sprint shall provide Newco and the Company, as co-borrowers,
with up to $25 million of Convertible Senior Debt financing on or after the
Closing, with such amount 
<PAGE>
 
to increase to up to $100 million over time (the "Convertible Debt Financing"),
such indebtedness to be evidenced by one or more Convertible Senior Promissory
Note(s);

     F.   WHEREAS, the closing of the Contribution and the other transactions
referred to above other than the Tender Offer shall take place concurrently with
the merger of Newco Sub into the Company (the "Merger") and the conversion of
each share of the Company's outstanding Common Stock into one share of Newco
common stock, par value $.01 per share ("Newco Common Stock") pursuant to the
Merger, in each case upon the terms and subject to the conditions set forth in
the Investment Agreement and any applicable Ancillary Agreements;

     G.   WHEREAS, the parties hereto desire to make certain representations,
warranties, covenants and agreements and also to prescribe various conditions in
connection with the transactions contemplated by this Agreement;

     H.   WHEREAS, in furtherance of all of the foregoing arrangements, the
Company, Newco, Sprint and Steven L.P. have entered into a Governance Agreement,
dated February 10, 1998 (the "Governance Agreement");

     I.   WHEREAS, in order to effectuate the intent and provisions of the
Governance Agreement, the Company, Newco, Sprint, Steven L.P. and the
Stockholders each desire to enter into this Agreement to provide for certain
rights and obligations of such parties with respect to the Stockholders' voting
and disposition of certain Equity Securities beneficially owned by each of them;
and

     J.   WHEREAS, the rights and obligations of the parties hereto shall not
take effect prior to the Closing.

     NOW, THEREFORE, in consideration of the mutual covenants, benefits and
agreements of the parties hereto pursuant to this Agreement, and other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto, intending to be legally bound, agree as
follows:

     1.   DEFINITIONS.  All capitalized terms used herein but not otherwise
          -----------                                                      
defined shall have the meanings given to such terms in the Governance Agreement.

     2.   REPRESENTATIONS AND WARRANTIES.  Each of the Stockholders represents,
          ------------------------------                           
as to itself only, and warrants to Sprint and Sprint L.P. as follows:

          (a)  Each Stockholder that is an entity is a corporation or
partnership that is duly organized, validly existing and in good standing under
the laws of the jurisdiction in which it is incorporated or organized and has
the power and authority to execute, deliver and perform this Agreement. Each
Stockholder that is a natural person has the capacity and the full legal right
to execute, deliver and perform this Agreement.

          (b)  This Agreement has been duly executed and delivered and
constitutes a valid and binding agreement and irrevocable proxy (coupled with an
interest), respectively, and 

                                       2
<PAGE>
 
is enforceable in accordance with its terms, except to the extent that the
enforcement of this Agreement may be limited by (i) bankruptcy, insolvency,
reorganization, moratorium or other similar laws now or hereafter in effect
relating to creditors' rights generally, and (ii) general principles of equity
regardless of whether enforceability is considered in a proceeding in equity or
at law.

          (c)  The execution and delivery of this Agreement did not, and the
performance thereof, without obtaining the consent of any third party will not,
conflict with, or result in any violation of, or default (with or without notice
or lapse of time, or both) under (i) to the knowledge of the Stockholder, the
certificate of incorporation or bylaws of the Company, (ii) any loan or credit
agreement, note, bond, mortgage, indenture, lease or other agreement,
instrument, permit or license applicable to the applicable Stockholder or the
Owned Shares, or (iii) any law applicable to the Stockholder.  No consent,
approval, order or authorization of, or registration, declaration or filing
with, any governmental entity or any party to a material contract is required by
or with respect to the applicable Stockholder or by the applicable Stockholder
in connection with the execution and delivery of this Agreement except under the
Exchange Act.

          (d)  Each of the Owned Shares is free and clear of all liens, claims
and encumbrances, except for any bona fide pledge to margin facilities and,
except as contemplated by this Agreement and the Voting Agreement, is not
subject to any (i) right of first refusal, (ii) right to purchase, acquire or
vote or (iii) power of attorney.

          (e)  Each Stockholder has the sole power, right and authority to vote
and to tender the Owned Shares in accordance with the terms of this Agreement.

          (f)  Notwithstanding the foregoing, Quantum Industrial Partners LDC
("QIP") has granted discretionary authority to vote and dispose of its Owned
Shares to Soros Fund Management LLC, although such grant will not affect QIP's
obligations hereunder.

          3.   OBLIGATIONS TO TENDER OR VOTE.
               ----------------------------- 

               (a)  NOTICE OF OFFERS.  Promptly after its receipt thereof, Newco
                    ----------------
shall give notice of an Offer, a Sprint Offer or a Qualified Offer to each of
the Stockholders (a "Stockholder Notice"). Such notice shall set forth in
reasonable detail the aggregate consideration and other terms and conditions of
the Offer, Sprint Offer or the Qualified Offer, as appropriate. If the terms of
any such offer are materially amended after an initial Stockholder Notice, Newco
shall promptly give notice of such amended terms to each Stockholder. For
purposes of comparing a Third-Party Offer with a Sprint Offer or a Qualified
Offer, the Stockholders may request and shall be entitled to receive from Newco
any additional information pertaining to any such offer possessed by Newco.

               (b)  SPRINT OFFER.  If a Sprint Offer is initiated and if an
                    ------------                                           
Intervening Offer is not then outstanding, each Stockholder shall be subject to
the following obligations:

                    (i)  Tender Offers.  If the Sprint Offer is to be effected,
                         -------------
     in whole or in part, in the form of a tender offer (a "Sprint Tender
     Offer"), each Stockholder shall 

                                       3
<PAGE>
 
     validly tender into the Sprint Tender Offer, in accordance with the terms
     and subject to the conditions set forth in Sprint's offer to purchase and
     related letter of transmittal and shall not withdraw such shares therefrom,
     all of such Stockholder's Owned Shares; and

                    (ii) Other Offers.  If the Sprint Offer involves a Business
                         ------------                                          
     Combination which must be approved by the holders of Voting Equity
     Securities (or a related matter that must be approved by the holders of
     Voting Equity Securities in order for such Business Combination to be
     effected), at the meeting at which such matters are considered by the
     stockholders of Newco, each Stockholder shall vote all of such
     Stockholder's Owned Shares in favor of such Business Combination and any
     such related matter.

          (c)  QUALIFIED OFFER.  If a Qualified Offer is initiated and if an
               ---------------                                              
Intervening Offer is not then outstanding, each Stockholder shall be subject to
the following obligations:

               (i)  Tender Offers.  If the Qualified Offer is to be effected, in
                    -------------                                               
     whole or in part, in the form of a Sprint Tender Offer, each Stockholder
     shall tender into the Sprint Tender Offer, in accordance with the terms and
     subject to the conditions set forth in Sprint's offer to purchase and
     related letter of transmittal and shall not withdraw such shares therefrom,
     all of such Stockholder's Owned Shares;

               (ii) Other Offers.  If the Qualified Offer involves a Business
                    ------------                                             
     Combination, which must be approved by the holders of Voting Equity
     Securities (or a related matter that must be approved by the holders of
     Voting Equity Securities in order for such Business Combination to be
     effected), at the meeting at which such matters are considered by the
     stockholders of Newco, each Stockholder shall vote all of such
     Stockholder's Owned Shares in favor of such Business Combination and any
     such related matter.

     4.   COVERED SHARES.
          -------------- 

          (a)  The term "Owned Shares" used herein shall mean all Equity
Securities (defined as if it covered both Common Stock and Newco Common Stock)
owned of record or beneficially (as defined in Rule 13d-3 under the Securities
Exchange Act of 1934, as amended (the "Exchange Act")) by each respective
Stockholder as of the date hereof, which shall include all shares of Newco
Common Stock received in the Merger, all Newco securities received in the Merger
and convertible into Newco Common Stock, and all other shares of stock or
securities or rights issuable in respect thereof on or after the date hereof.
Upon receipt of a Stockholder Notice, each Stockholder holding Equity Securities
that are convertible into Newco Common Stock shall promptly convert such
securities to Newco Common Stock in a manner that will permit the Newco Common
Stock issued pursuant to such conversion to be included in the Tender Offer, as
required under Sections 3(b)(i) and 3(c)(i) hereof, or voted under the
irrevocable proxy required under Sections 3(b)(ii) or 3(c)(ii) hereof, as the
case may be; provided, that no such conversion shall be required if the amount
to be paid per share in the relevant transaction is less than the amount to be
paid by the Stockholder in effecting such conversion.  All of the 

                                       4
<PAGE>
 
Newco Common Stock issued upon conversion shall be considered "Owned Shares" for
purposes of this Agreement.

          (b)  Notwithstanding any provision of this Agreement to the contrary,
at any time after the Closing, each Stockholder may offer, sell, convey, assign
or otherwise transfer or dispose of ("Transfer") any of such Stockholder's Owned
Shares:

               (i)   in transactions effected pursuant to Rule 144 under the
     Securities Act of 1933, as amended;

               (ii)  in a public offering registered with the SEC;

               (iii) in any other transaction other than one which, to the
     applicable Stockholder's actual knowledge, would be a Transfer to a Person
     that (i) owns, of record or beneficially, or who is (by virtue of such
     Transfer) reasonably anticipated to own of record or beneficially (as
     defined in Rule 13d-3 under the Exchange Act), 5% or more of the
     outstanding Equity Securities of the Company (calculated in accordance with
     Rule 13d-3 under the Exchange Act), or (ii) is obligated to file (or would,
     by virtue of such transaction, reasonably be anticipated to be obligated to
     file) a Schedule 13D with the SEC pursuant to each of paragraphs (b) and
     (e) of Rule 13d-1 under the Exchange Act;

               (iv)  in any placement to a margin or nominee account; subject to
     the requirements set forth in Section 5(b) hereof; or

               (v)   subject to Sprint's prior written consent, in any other
     transaction.

          (c)  Owned Shares as to which a Transfer is effected shall cease to be
Owned Shares immediately upon acceptance by such Stockholder of payment for such
shares, and may be so Transferred free and clear of any restrictions arising
under this Agreement.

     5.   VOTING AGREEMENT.  (a) To the extent this Agreement constitutes a
          ----------------                                                 
voting agreement in accordance with Section 218(c) of the Delaware General
Corporation Law, it is intended to comply therewith and be enforceable
thereunder.  The obligations of the Stockholders in this Agreement, including
without limitation those with respect to the voting of their respective Owned
Shares, are irrevocable during the term of this Agreement.

          (b)  In order to insure that the voting agreements set forth in
Sections 3(b)(ii) and 3(c)(ii) will be fulfilled, each of the undersigned
Stockholders agrees to grant, and (except with respect to shares held by a
nominee for which the applicable Stockholders will obtain from such nominee
promptly after the date hereof) concurrently with the execution of this
Agreement hereby grants, to Sprint and Sprint L.P., or either of them, an
Irrevocable Proxy, coupled with an interest, in the form attached hereto, with
respect to all of the Owned Shares covered by such voting agreements, for and in
the name, place and stead of such Stockholder, at any annual or special meeting
of the holders of Newco Common Stock and at any adjournment or postponement
thereof, or pursuant to any consent in lieu of a meeting, in respect of the
specific matters described in Sections 3(b)(ii) and 3(c)(ii).  The Irrevocable
Proxy granted by each of the 

                                       5
<PAGE>
 
Stockholders constitutes the valid and effective Irrevocable Proxy, coupled with
an interest, of each such Stockholder in respect of the Owned Shares, within the
meaning of Section 212(e) of the Delaware General Corporation Law, revokes any
proxy or proxies or powers of attorney heretofore given by such Stockholder in
respect of such Owned Shares; shall remain in full force and effect and is and
shall be irrevocable until the termination of this Agreement and is coupled with
an interest and an integral part of the benefits and obligations of such
Stockholder and the rights and benefits of Sprint and Sprint L.P.
Notwithstanding the foregoing, in the event that a Stockholder places any Owned
Shares in a nominee account after the date hereof, the Stockholder shall, on or
before the date on which such placement is made, deliver a replacement
Irrevocable Proxy to Sprint.

     6.   NATURE OF STOCKHOLDER OBLIGATIONS.  The obligations of the
          ---------------------------------                         
Stockholders hereunder are several and not joint.

     7.   TERM.  This Agreement and the obligations hereunder shall commence
          ----                                                              
on the Closing Date (as defined in the Investment Agreement) and continue until
the earlier of (i) the termination of the Investment Agreement, (ii) the
modification, waiver or amendment of the Investment Agreement or the Ancillary
Agreements in any manner adverse to the Stockholders, and (iii) June 15, 1998 if
the Closing Date has not occurred on or before such date (each, a "Termination
Date").

     8.   MISCELLANEOUS.
          ------------- 

          (a)  Notices. Unless otherwise provided herein, any notice, request,
               -------                                                        
waiver, instruction, consent or document or other communication required or
permitted to be given by this Agreement shall be effective only if it is in
writing and (a) delivered by hand or sent by certified mail, return receipt
requested, (b) if sent by a nationally-recognized overnight delivery service
with delivery confirmed, or (c) if telexed or telecopied, with receipt confirmed
as follows:

                                       6
<PAGE>
 
      The Company:          3100 New York Drive
                            Pasadena, California 91107
                            Attn:  President and CEO
                            Telecopy No.: 626/296-4161

      with a copy to:       Hunton & Williams
                            NationsBank Plaza, Suite 4100
                            600 Peachtree Street, N.E.
                            Atlanta, Georgia  30308-2216
                            Attn: Scott M. Hobby, Esq.
                            Telecopy No.: (404) 888-4190

      Newco and Newco Sub:  3100 New York Drive
                            Pasadena, California 91107
                            Attn: President and CEO
                            Telecopy No.:  626/296-4161

      with a copy to:       Hunton & Williams
                            NationsBank Plaza, Suite 4100
                            600 Peachtree Street, N.E.
                            Atlanta, Georgia  30308-2216
                            Attn: Scott M. Hobby, Esq.
                            Telecopy No.: (404) 888-4190

      Sprint:               Sprint Corporation
                            2330 Shawnee Mission Parkway
                            Westwood, Kansas 66205
                            Attn:  Chief Financial Officer
                            Telecopy No.:  (913) 624-8426

      with a copy to:       Sprint Corporation
                            2330 Shawnee Mission Parkway
                            Westwood, Kansas 66205
                            Attn:  Corporate Secretary
                            Telecopy No.:  (913) 624-8233

                                       7
<PAGE>
 
      with an additional 
      copy to:              Stinson, Mag & Fizzell, P.C.
                            1201 Walnut, Suite 2800
                            P.O. Box 419251
                            Kansas City, Missouri  64141-6251
                            Attn:  John A. Granda, Esq.
                            Telecopy No.: (816) 691-3495

      Quantum Industrial
      Partners LDC:         Quantum Industrial Partners LDC
                            c/o Soros Fund Management, LLC
                            888 7th Avenue, Floor 33
                            New York, New York  10106
                            Attn:  Michael Neus, Esq.
                            Telecopy No.: (212) 664-0544

      with a copy to:       Akin, Gump, Strauss, Hauer, Feld, L.L.P.
                            590 Madison Avenue
                            New York, New York  10022
                            Attn:  Patrick Dooley, Esq.
                            Telecopy No.: (212) 407-3280

The parties hereto (the "Parties") shall promptly notify each other of any
change in their respective addresses or facsimile numbers or of the Person or
office to receive notices, requests or other communications under this Section
8(a).  Notice shall be deemed to have been given as of the date when so
personally delivered, when actually delivered by the U.S. Postal Service at the
proper address, the next day when delivered during business hours to an
overnight delivery service properly addressed or when receipt of a telex or
telecopy is confirmed, as the case may be, unless the sending party has actual
Knowledge that such notice was not received by the intended recipient.

        (b)  Amendments.  No amendment, modification or alteration of the 
             ----------
     terms or provisions of this Agreement shall be binding unless the same
     shall be in writing and duly executed by the Party against whom such
     amendment, modification or alteration is sought to be enforced.

        (c)  Waivers.  Except as otherwise permitted in this Agreement, the 
             -------
     terms or conditions of this Agreement may not be waived unless set forth in
     a writing signed by, the Party entitled to the benefits thereof. No waiver
     of any of the provisions of this Agreement shall be deemed or shall
     constitute a waiver of such provision at any time in the future or a waiver
     of any other provision hereof. The rights and remedies of the Parties are
     cumulative and not alternative. Except as otherwise permitted in this
     Agreement, neither the failure nor any delay by any Party in exercising any
     right, power or privilege under this Agreement will operate as a waiver of
     such right, power or privilege, and no single or partial exercise of any
     such right, power or privilege will preclude any other or further exercise
     of such right, power or privilege or the exercise of any other right, power
     or privilege.

                                       8
<PAGE>
 
        (d)  Severability.  If any term or provision of this Agreement or the
             ------------                                                    
     application thereof to either party or set of circumstances shall, in any
     jurisdiction and to any extent, be finally held invalid or unenforceable,
     such term or provision shall only be ineffective as to such jurisdiction,
     and only to the extent of such invalidity or unenforceability, without
     invalidating or rendering unenforceable any other terms or provisions of
     this Agreement or under any other circumstances, and the parties shall
     negotiate in good faith a substitute provision which comes as close as
     possible to the invalidated or unenforceable term or provision, and which
     puts each party in a position as nearly comparable as possible to the
     position it would have been in but for the finding of invalidity or
     unenforceability, while remaining valid and enforceable.

        (e)  Inapplicability of Certain Sections.  Notwithstanding the 
             -----------------------------------
     obligations set forth in Section 3(b)(i) and (ii), 3(c)(i) and (ii), and
     Sections 4(a) or 5(b), such sections shall be deemed to be inapplicable to
     any Stockholder who, in his or its sole discretion, reasonably determines,
     at any time after the date hereof and prior to his or its tender,
     conversion, voting or granting of such proxy as to Owned Shares, that such
     action could be a transaction in violation of Section 16(b) of the Exchange
     Act. In such event, the applicable Stockholder's obligation to take any
     actions required under such Sections shall be deemed to be null and void
     and not enforceable against such Stockholder, but only to the extent of
     such potential violation.

        (f)  Entire Agreement.  This Agreement and, upon execution by all 
             ----------------
     Parties thereto embodies the entire agreement and understanding of the
     Parties in respect to the matter contemplated hereby and thereby and
     supersedes and renders null and void all other prior agreements and
     understandings, written and oral, with respect to the subject matter hereof
     and thereof, provided, that this provision shall not abrogate any other
                  --------
     written agreement between the Parties executed simultaneously with this
     Agreement. No Party shall be liable or bound to any other Party in any
     manner by any promises, conditions, representations, warranties, covenants,
     agreements and understandings, except as specifically set forth herein or
     therein.

        (g)  Assignment.  Neither this Agreement nor any of the rights, 
             ----------
     interests or obligations under this Agreement shall be assigned or
     transferred, in whole or in part, by any of the Parties without the prior
     written consent of the other Parties; provided, however, that such
     assignment or transfer may be made by (i) by Sprint to any of its
     Affiliates, or (ii) pursuant to any merger or sale of substantially all of
     the assets of Sprint or such Affiliates (or any transaction having such
     effect) that is pursuant to an agreement entered into after the Closing.
     Subject to the preceding sentence, this Agreement will be binding upon,
     inure to the benefit of, and be enforceable by, the parties and their
     respective successors and assigns. Any attempted assignment in violation of
     this Section 8(g) shall be void.

        (h)  Parties in Interest.  Nothing in this Agreement, express or 
             -------------------
     implied, shall create or confer upon any Person (including but not limited
     to any employees), other than the Parties or their respective successors
     and permitted assigns, any legal or equitable rights, remedies,
     obligations, liabilities or claims under or with respect to this Agreement
     except as expressly provided herein.

        (i)  Specific Performance.  The Parties recognize and agree that 
             -------------------- 
     immediate irreparable damages for which there is no adequate remedy at law
     would occur in the event that

                                       9
<PAGE>
 
     any provision of this Agreement is not performed in accordance with the
     specific terms hereof or is otherwise breached.  Accordingly, it is agreed
     that in the event of a failure by a Party to perform its obligations under
     this Agreement, the non-breaching Party shall be entitled to specific
     performance through injunctive relief to prevent breaches of the provisions
     of this Agreement and to enforce specifically the provisions of this
     Agreement in any action instituted in any court having subject matter
     jurisdiction, in addition to any other remedy to which such party may be
     entitled, at law or in equity.

        (j)  Governing Law.  This Agreement shall be construed in accordance 
             ------------- 
     with and governed by the laws of the State of Delaware, without regard to
     conflict of laws principles.

        (k)  Exclusive Jurisdiction and Consent to Service of Process.  The 
             -------------------------------------------------------- 
     Parties agree that any Action arising out of or relating to this Agreement,
     the Ancillary Agreements or the transactions contemplated hereby or thereby
     shall be brought by the Parties only in a Delaware state court or a federal
     court sitting in that state, which shall be the exclusive venue of any such
     Action. Each Party waives any objection which such party may now or
     hereafter have to the laying of venue of any such Action, and irrevocably
     consents and submits to the jurisdiction of any such court (and the
     appropriate appellate courts) in any such Action. Any and all service of
     process and any other notice in any such Action shall be effective against
     such Party when transmitted in accordance with Section 8(a). Nothing
     contained herein shall be deemed to affect the right of any Party to serve
     process in any manner permitted by Law.

        (l)  Counterparts.  This Agreement may be executed in one or more 
             ------------
     counterparts each of which when so executed and delivered shall for all
     purposes be deemed to be an original but all of which, when taken together,
     shall constitute one and the same Agreement.

        (m)  Effectiveness; Termination.  This Agreement shall become effective 
             -------------------------- 
     at the Closing and, concurrently therewith, upon the effectiveness of the
     Governance Agreement. After becoming effective, this Agreement shall
     terminate upon termination of the Governance Agreement and the Stockholders
     shall thereafter have no further obligations hereunder.

        (n)  WAIVER OF JURY TRIAL.  THE COMPANY, NEWCO, SPRINT AND SPRINT L.P. 
             --------------------   
     AND EACH STOCKHOLDER HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE ANY RIGHT
     THAT IT MAY HAVE TO A TRIAL BY JURY IN ANY ACTION INVOLVING, DIRECTLY OR
     INDIRECTLY, ANY MATTER (WHETHER SOUNDING IN TORT, CONTRACT OR OTHERWISE) IN
     ANY WAY ARISING OUT OF, RELATED TO, OR CONNECTED WITH THIS AGREEMENT OR ANY
     ANCILLARY AGREEMENT OR THE RELATIONSHIP ESTABLISHED HEREUNDER OR
     THEREUNDER.

        (o)  Nothing herein contained shall prohibit a Stockholder from
     tendering into any Tender Offer any Owned Shares.

                                       10
<PAGE>
 
     IN WITNESS WHEREOF, the parties hereto have executed this Stockholders'
Agreement as of the day and year first above written.



                      [Signatures on the following page]

                                       11
<PAGE>
 
                              EARTHLINK NETWORK, INC.

                              By: /s/ Charles G. Betty
                                 -----------------------------------------
                              Name:   Charles G. Betty
                                   ---------------------------------------
                              Title:  President and CEO


                              DOLPHIN, INC.

                              By: /s/ Charles G. Betty
                                 -----------------------------------------
                              Name:   Charles G. Betty
                                   ---------------------------------------
                              Title:  President and CEO


                              SPRINT CORPORATION

                              By: /s/ Theodore H. Schell
                                 -----------------------------------------
                              Name:   Theodore H. Schell
                                   ---------------------------------------
                              Title:  Vice President - Strategic Planning
                                      and Corporate Development


                              SPRINT COMMUNICATIONS COMPANY L.P.

                              By:  U.S. Telecom, Inc., General Partner

                                  By: /s/ Don A. Jenson
                                     -------------------------------------
                                  Name:   Don A. Jenson
                                       -----------------------------------
                                  Title:  Vice President and Secretary
                                        ----------------------------------



                  SIGNATURE PAGE FOR STOCKHOLDERS' AGREEMENT

                                       12
<PAGE>
 
                                              /s/ Sky Dayton
                                              ----------------------------------
                                              SKY D. DAYTON



                  SIGNATURE PAGE FOR STOCKHOLDERS' AGREEMENT

<PAGE>
 
                                         QUANTUM INDUSTRIAL PARTNERS LDC

                                         By: /s/ Michael C. Neus
                                            ------------------------------------
                                         Name: Michael C. Neus
                                              ----------------------------------
                                         Title:  Attorney-in-Fact



                  SIGNATURE PAGE FOR STOCKHOLDERS' AGREEMENT

<PAGE>

                                              /s/ Kevin M. O'Donnell
                                              ----------------------------------
                                              KEVIN M. O'DONNELL



                  SIGNATURE PAGE FOR STOCKHOLDERS' AGREEMENT

<PAGE>

                                              /s/ George Soros   
                                              ----------------------------------
                                              GEORGE SOROS



                  SIGNATURE PAGE FOR STOCKHOLDERS' AGREEMENT

<PAGE>
 

                                              /s/ Reed Slatkin
                                              ----------------------------------
                                              REED SLATKIN



                  SIGNATURE PAGE FOR STOCKHOLDERS' AGREEMENT

<PAGE>
 
                                              /s/ Sidney Azeez
                                              ----------------------------------
                                              SIDNEY AZEEZ



                  SIGNATURE PAGE FOR STOCKHOLDERS' AGREEMENT

<PAGE>
 
                                  Schedule I
                                  ----------

Name and Address                                      Owned Shares
- ----------------                                      ------------
Sky D. Dayton                                            1,500,000
3100 New York Drive
Pasadena, CA 91107

Quantum Industrial Partners LDC                          1,456,095
c/o Soros Fund Management
Attn: Paul McNulty
888 Seventh Avenue
New York, NY 10106

Kevin M. O'Donnell                                         974,002
9919 Beverly Grove Drive
Beverly Hills, CA 90210

George Soros                                               214,545
888 Seventh Avenue
New York, NY 10106

Reed Slatkin                                             1,042,473
890 North Kellogg Avenue
Santa Barbara, CA 93111

Sidney Azeez                                               236,884
c/o Unitel Cellular Communications Systems
Bayport One, Suite 400
West Atlantic City, NJ 08232



<PAGE>
 
                                                                  EXHIBIT (C)(4)
                          AGREEMENT AND PLAN OF MERGER
                         AMONG EARTHLINK NETWORK, INC.,
                             A DELAWARE CORPORATION
                                 DOLPHIN, INC.,
                          A DELAWARE CORPORATION, AND
                               DOLPHIN SUB, INC.,
                             A DELAWARE CORPORATION
                                        

     THIS AGREEMENT AND PLAN OF MERGER DATED AS OF FEBRUARY 10, 1998 (THE
"AGREEMENT") IS AMONG EARTHLINK NETWORK, INC., A DELAWARE CORPORATION
("EARTHLINK"), DOLPHIN, INC., A DELAWARE CORPORATION ("NEWCO"), AND DOLPHIN SUB
INC., A DELAWARE CORPORATION AND A WHOLLY-OWNED SUBSIDIARY OF DOLPHIN ("NEWCO
SUB"). EARTHLINK AND NEWCO SUB ARE SOMETIMES REFERRED TO HEREIN AS THE
"CONSTITUENT CORPORATIONS."

                                R E C I T A L S
                                ---------------

     A.  EarthLink is a corporation duly organized and existing under the laws
of the State of Delaware and has an authorized capital of sixty million
(60,000,000) shares, fifty million (50,000,000) of which are designated as
common stock, $.01 par value per share (the "EarthLink Common Stock"), and ten
million (10,000,000) of which are designated as preferred stock, $.01 par value
per share.

     B.  Newco is a corporation duly organized and existing under the laws of
the State of Delaware and has an authorized capital of seventy-five million
(75,000,000) shares, fifty million (50,000,000) of which are designated as
common stock, $.01 par value per share (the "Newco Common Stock"), and twenty-
five million (25,000,000) of which are designated as preferred stock, $.01 par
value per share (the "Newco Preferred Stock").  As of February 10, 1998, ten
(10) shares of Newco Common Stock were issued and outstanding (the "Newco
Subscription Shares") and no shares of Newco Preferred Stock were issued and
outstanding.

     C.  Newco Sub is a corporation duly organized and existing under the laws
of the State of Delaware and has an authorized capital of sixty million
(60,000,000) shares, fifty million (50,000,000) of which are designated as
common stock, $.01 par value per share (the "Newco Sub Common Stock"), and ten
million (10,000,000) of which are designated as preferred stock, $.01 par value
per share.  As of February 10, 1998, ten (10) shares of Newco Sub Common Stock
were issued and outstanding, all of which were held by Newco.

     D.  The Boards of Directors of EarthLink and Newco Sub have determined that
it is advisable and in the best interests of EarthLink and Newco Sub,
respectively, that Newco Sub merge with and into EarthLink upon the terms and
conditions herein provided.

     E.  The Boards of Directors of each of EarthLink, Newco and Newco Sub have
approved this Agreement and the transactions contemplated hereby and directed
that this Agreement be executed by the respective undersigned officers of each
of those corporations.

                                       1
<PAGE>
 
     F.  The Boards of Directors of EarthLink and Newco Sub have directed that
this Agreement be submitted to a vote of their respective stockholders with the
recommendation that such stockholders approve the Agreement and the transactions
contemplated hereby.

     NOW, THEREFORE, in consideration of the mutual agreements and covenants set
forth herein, EarthLink, Newco and Newco Sub hereby agree, subject to the terms
and conditions hereinafter set forth, as follows:

                                   I.  MERGER

     1.1  Merger.  In accordance with the provisions of this Agreement and the
          ------                                                              
Delaware General Corporation Law, Newco Sub shall be merged with and into
EarthLink (the "Merger"), the separate existence of Newco Sub shall cease and
EarthLink shall be, and is herein sometimes referred to as, the "Surviving
Corporation," and the name of the Surviving Corporation shall be EarthLink
Operations, Inc.  Upon the Effective Date of the Merger (as defined below),
Newco shall file a change of name amendment to its Certificate of Incorporation,
whereby it shall assume the name "EarthLink Network, Inc."

     1.2  Filing and Effectiveness.  The Merger shall become effective when the
          ------------------------                                             
following actions shall have been completed:

     (a) This Agreement and Merger shall have been adopted and approved by the
stockholders of each of the Constituent Corporations in accordance with the
requirements of the Delaware General Corporation Law; and

     (b) An executed Certificate of Merger or an executed counterpart of this
Agreement meeting the requirements of the Delaware General Corporation Law shall
have been filed with the Secretary of State of the State of Delaware.

     The date and time when the Merger shall become effective, as aforesaid, is
herein called the "Effective Time of the Merger."

     1.3  Effect of the Merger.  Upon the Effective Time of the Merger, the
          --------------------                                             
separate existence of Newco Sub shall cease and EarthLink, as the Surviving
Corporation, (i) shall continue to possess all of its assets, rights, powers and
property as constituted immediately prior to the Effective Time of the Merger,
(ii) shall be subject to all actions previously taken by its and Newco Sub's
Board of Directors, (iii) shall succeed, without other transfer, to all of the
assets, rights, powers and property of Newco Sub in the manner more fully set
forth in Section 259 of the Delaware General Corporation Law, (iv) shall
continue to be subject to all of the debts, liabilities and obligations of Newco
Sub in the same manner as if EarthLink had itself incurred them, all as more
fully provided under the applicable provisions of the Delaware General
Corporation Law.

                                       2
<PAGE>
 
                 II.  CHARTER DOCUMENTS, DIRECTORS AND OFFICERS

     2.1  Certificate of Incorporation.  The Certificate of Incorporation of
          ----------------------------                                      
Newco Sub as in effect immediately prior to the Effective Time of the Merger
shall continue in full force and effect as the Certificate of Incorporation of
the Surviving Corporation until duly amended in accordance with the provisions
thereof and applicable law.  The Certificate of Incorporation of Newco Sub is
attached hereto as Appendix A.
                   -------- - 

     2.2  Bylaws.  The Bylaws of Newco Sub as in effect immediately prior to the
          ------                                                                
Effective Time of the Merger shall continue in full force and effect as the
Bylaws of the Surviving Corporation until duly amended in accordance with the
provisions thereof and applicable law.  The Bylaws of Newco Sub are attached
hereto as Appendix B.
          -------- - 

     2.3  Directors and Officers.  The directors and officers of EarthLink
          ----------------------                                          
immediately prior to the Effective Time of the Merger shall be the directors and
officers of each of Newco and the Surviving Corporation until their successors
shall have been duly elected and qualified or until as otherwise provided by
law, the Certificate of Incorporation or the Bylaws of Newco or of the Surviving
Corporation, respectively.

                      III.  MANNER OF CONVERSION OF STOCK

     3.1  Newco Sub Common Stock.  Upon the Effective Time of the Merger, the
          ----------------------                                             
shares of Newco Sub Common Stock issued and outstanding immediately prior
thereto shall, by virtue of the Merger and without any action by the Constituent
Corporations, the holder of such shares or any other person, be converted into
and exchanged for such number of fully paid and nonassessable shares of common
stock of the Surviving Corporation as is equal to the number of shares of
EarthLink Common Stock outstanding at the Effective Time of the Merger.

     3.2  EarthLink Common Stock.  Upon the Effective Time of the Merger, each
          ----------------------                                              
share of EarthLink Common Stock issued and outstanding immediately prior thereto
shall by virtue of the Merger and without any action by the Constituent
Corporations, the holder of such shares or any other person, be converted into
and exchanged for one fully paid and nonassessable share of Newco Common Stock.

     3.3  Newco Subscription Shares.  Upon the Effective Time of the Merger, the
          -------------------------                                             
Newco Subscription Shares shall be canceled and thereafter held as treasury
stock of Newco.

     3.4  EarthLink Options, Stock Purchase Rights and Convertible Securities.
          ------------------------------------------------------------------- 

     (a) Upon the Effective Time of the Merger, to the extent permitted by the
terms of such instruments as in effect at the Effective Time of the Merger,
Newco shall assume the obligations of EarthLink under any and all securities,
warrants, calls, rights to purchase, rights of first refusal, securities
convertible into or exchangeable for voting securities, commitments, agreements,
arrangements or undertakings of any kind to which EarthLink is a party or by
which it is bound obligating EarthLink to issue, deliver or sell or create, or

                                       3
<PAGE>
 
cause to be issued, delivered or sold or created, additional shares of the
capital stock of or other voting securities or phantom stock or other
contractual rights the value of which is determined in whole or in part by the
value of any capital stock of EarthLink, or obligating EarthLink to issue,
grant, extend or enter into any such security, option, warrant, call, right,
commitment, agreement, arrangement, or undertaking (collectively, the "Dilutive
Securities") on the same terms and conditions as were in effect immediately
prior to the Merger; thereafter, each such Dilutive Security shall become,
subject to the provisions in paragraph (c) hereof, an option, right to purchase
or a security convertible into Newco Common Stock on the basis of one share of
Newco Common Stock for each one share of EarthLink Common Stock issuable
pursuant to any such Dilutive Security, on the same terms and conditions and at
an exercise price equal to the exercise price applicable to any such Dilutive
Security at the Effective Time of the Merger.

     (b) A number of shares of Newco Common Stock shall be reserved for issuance
upon the exercise of options, stock purchase rights and convertible securities
equal to the number of shares of EarthLink Common Stock so reserved immediately
prior to the Effective Date of the Merger.

     (c) The assumed Rights shall not entitle any holder thereof to a fractional
share upon exercise or conversion (unless the holder was entitled to a
fractional interest immediately prior to the Merger).  In lieu thereof, any
fractional share interests to which a holder of an assumed Right (other than an
option issued pursuant to EarthLink's 1995 Stock Option Plan, as amended) would
otherwise be entitled upon exercise or conversion shall be aggregated (but only
with other similar Rights which have the same per share terms).  To the extent
that after such aggregation the holder would still be entitled to a fractional
share with respect thereto upon exercise or conversion, the holder shall be
entitled, upon the exercise or conversion of all such assumed Rights pursuant to
their terms (as modified herein), to one full share of common stock in lieu of
such fractional share.  With respect to each class of such similar Rights, no
holder will be entitled to more than one full share in lieu of a fractional
share upon exercise or conversion.

     3.5  Stock Certificates.
          ------------------ 

          (a) Upon the Effective Time of the Merger, each outstanding
certificate theretofor representing shares of EarthLink Common Stock shall be
deemed for all purposes to represent the number of shares of Newco Common Stock
into which such shares of EarthLink Common Stock were converted in the Merger.
The registered owner of shares of EarthLink Common Stock on the books and
records of EarthLink shall be entitled, as of the Effective Time of the Merger,
to exercise any voting and other rights with respect to, and receive dividends
and other distributions upon, the shares of Newco Common Stock represented by
such outstanding certificate as provided above.

          (b) Upon the Effective Time of the Merger, Newco, the sole stockholder
of Newco Sub, shall surrender the outstanding certificate representing shares of
Newco Sub to the Surviving Corporation in exchange for a certificate or
certificates representing the number of shares of common stock of the Surviving
Corporation into which the surrendered shares were converted as herein provided.
Such certificate for shares of common stock of the Surviving

                                       4
<PAGE>
 
Corporation shall bear the same legends, if any, with respect to the
restrictions on transferability as the certificate of Newco Sub so converted and
given in exchange therefor, unless otherwise determined by the Board of
Directors of the Surviving Corporation in compliance with applicable laws.

                                  IV.  GENERAL

     4.1  Assurances.  From time to time, as and when required by the parties
          ----------                                                         
hereto or by their successors or assigns, there shall be executed and delivered
on behalf of the parties hereto such deeds and other instruments, and there
shall be taken or caused to be taken by it such further and other actions as
shall be appropriate or necessary in order to vest or perfect in or conform of
record or otherwise by the parties hereto the title to and possession of all the
property, interests, assets, rights, privileges, immunities, powers, franchises
and authority of the parties hereto and otherwise to carry out the purposes of
this Agreement, and the officers and directors of the parties hereto are fully
authorized in the name and on behalf of such parties or otherwise to take any
and all such action and to execute and deliver any and all such deeds and other
instruments.

     4.2  Abandonment.  At any time before the Effective Time of the Merger,
          -----------                                                       
this Agreement may be terminated and the Merger may be abandoned for any reason
whatsoever by the Board of Directors of any of EarthLink, Newco or Newco Sub,
notwithstanding the approval of this Agreement by the stockholders of EarthLink
or by the sole stockholder of Newco or Newco Sub.

     4.3  Amendment.  Subject to the Investment Agreement dated February 10,
          ---------                                                         
1998, by and among EarthLink, Newco, Newco Sub, Sprint Corporation and Sprint
Communications Company L.P., the Boards of Directors of the Constituent
Corporations may amend this Agreement at any time prior to the filing of this
Agreement (or certificate in lieu thereof) with the Secretary of State of the
State of Delaware, provided that an amendment made subsequent to the adoption of
this Agreement by the stockholders of either Constituent Corporation shall not:
(i) alter or change the amount or kind of shares, securities, cash, property
and/or rights to be received in exchange for or in conversion of all or any of
the shares of any class or series thereof of either of the Constituent
Corporations, (ii) alter or change any term of the Certificate of Incorporation
of the Surviving Corporation to be effected by the Merger, or (iii) alter or
change any of the terms and conditions of this Agreement if such alteration or
change would adversely affect the holders of any class or series of capital
stock of either of the Constituent Corporations.

     4.4  Registered Office.  The registered office of the Surviving Corporation
          -----------------                                                     
in the State of Delaware is 1209 Orange Street, Wilmington, DE 19801 and The
Corporation Trust Company is the registered agent of the Surviving Corporation
at such address.

     4.5  Agreement.  Executed copies of this Agreement will be on file at the
          ---------                                                           
principal place of business of the Surviving Corporation at 3100 New York Drive,
Suite 201, Pasadena, California 91107, and copies thereof will be furnished to
any stockholder of either Constituent Corporation, upon request and without
cost.

                                       5
<PAGE>
 
     4.6  Governing Law.  This Agreement shall in all respects be construed,
          -------------                                                     
interpreted and enforced in accordance with and governed by the laws of the
State of Delaware.

     4.7  Counterparts.  In order to facilitate the filing and recording of this
          ------------                                                          
Agreement, the same may be executed in any number of counterparts, each of which
shall be deemed to be an original and all of which together shall constitute one
and the same instrument.


     IN WITNESS WHEREOF, this Agreement having first been approved by the
resolutions of the Board of Directors of EarthLink Network, Inc., a Delaware
corporation, Dolphin, Inc., a Delaware corporation, Dolphin Sub, Inc., a
Delaware corporation, and is hereby executed on behalf of each such corporations
and attested by their respective officers thereunto duly authorized.


                                             EARTHLINK NETWORK, INC.
                                             a Delaware corporation


                                             By:_______________________________
                                                     Sky D. Dayton, Chairman

ATTEST:

___________________________
Kirsten Hansen, Secretary


 
                                             DOLPHIN, INC.
                                             a Delaware corporation


                                             By:_______________________________
                                                     Sky D. Dayton, Chairman

ATTEST:

_______________________________
Kirsten Hansen, Secretary



                    [SIGNATURES CONTINUED ON FOLLOWING PAGE]

                                       6
<PAGE>
 
                                             DOLPHIN SUB, INC.
                                             a Delaware corporation


                                             By:_______________________________
                                                     Sky D. Dayton, Chairman

ATTEST:

_______________________________
Kirsten Hansen, Secretary

                                       7

<PAGE>

                                                            EXHIBIT NO. (C)(5)
================================================================================




                               CREDIT AGREEMENT


                                    BETWEEN


                                 DOLPHIN, INC.


                                      AND


                            EARTHLINK NETWORK, INC.
                                 AS BORROWERS,


                                      AND


                              SPRINT CORPORATION
                                   AS LENDER



                         DATED AS OF FEBRUARY 10, 1998





================================================================================
<PAGE>
 
<TABLE>
<CAPTION>
                                 TABLE OF CONTENTS

                                                                                     PAGE
                                                                                     ----  
                                                                                    <C> 
<S>                                     
ARTICLEI I  DEFINITIONS................................................................2
      1.01. Definitions................................................................2

ARTICLE II THE CREDITS  11
      2.01. Advances...................................................................11
      2.02. Facility Termination Date..................................................11
      2.03. Minimum Amount of Each Advance............................................ 12
      2.04. Commitment Increases...................................................... 12
      2.05. Borrowing Notices for New Advances........................................ 12
      2.06. Rates Applicable After an Event of Default................................ 13
      2.07. Method of Payment......................................................... 13
      2.08. Notes..................................................................... 13
      2.09. Interest Rate; Interest Payment Dates; Interest and Fee Basis............. 13
      2.10. Waivers; Special Agreements of Borrowers.................................. 13

 ARTICLE III CONVERSION AND PREPAYMENT................................................ 14
      3.01. Conversion................................................................ 14
      3.02. No Impairment............................................................. 18
      3.03. Stock Transfer Taxes...................................................... 18
      3.04. No Fractional Shares: Certificate as to Adjustments....................... 19
      3.05. Notices of Record Date.................................................... 19
      3.06. Reservation of Securities Issuable upon Conversion........................ 19
      3.07. Prepayment................................................................ 20
      3.08. Mandatory Prepayments..................................................... 20
      3.09. Stockholder Rights Plan................................................... 20
      3.10. Tolling of Automatic Conversion and Other Time periods for HSR  Compliance 21

ARTICLE IV  ADVANCE CONDITIONS........................................................ 21

ARTICLE V   REPRESENTATIONS AND WARRANTIES............................................ 22
     5.01.  Organization, Standing and Power.......................................... 22
     5.02.  Subsidiaries and Joint Ventures........................................... 22
     5.03.  Authority; Noncontravention............................................... 23
     5.04.  Taxes..................................................................... 23
     5.05.  Compliance with Laws...................................................... 23
     5.06.  Environmental Matters..................................................... 24
     5.07.  Intellectual Property..................................................... 24
     5.08.  Certain Payments.......................................................... 25
</TABLE>
                                                    
                                       i
<PAGE>
 
<TABLE>
<S>                                                                                     <C> 
ARTICLE VI COVENANTS.................................................................... 25
 6.01.    Financial Reporting........................................................... 25
 6.02.    Subsidiaries as Borrowers; Use of Proceeds.................................... 27
 6.03.    Notice of Default............................................................. 27
 6.04.    Conduct of Business; Merger, Sale of Assets, Etc.............................. 27
 6.05.    Taxes......................................................................... 28
 6.06.    Insurance..................................................................... 28
 6.07.    Compliance with Laws.......................................................... 28
 6.08.    Maintenance of Properties..................................................... 28
 6.09.    Inspection.................................................................... 28
 6.10.    Investments and Purchases..................................................... 28
 6.11.    Liens......................................................................... 29
 6.12.    Affiliates.................................................................... 30
 6.13.    Environmental Matters......................................................... 30
 6.14.    Change in Corporate Structure; Fiscal Year.................................... 30
 6.15.    Inconsistent Agreements....................................................... 31
 6.16.    Indebtedness.................................................................. 31
 6.17.    ERISA Compliance.............................................................. 31

 ARTICLE VII  EVENTS OF DEFAULT......................................................... 32
 7.01................................................................................... 32
 7.02................................................................................... 32
 7.03................................................................................... 32
 7.04................................................................................... 32
 7.05................................................................................... 33
 7.06................................................................................... 33
 7.07................................................................................... 33
 7.08................................................................................... 33
 7.09................................................................................... 33

ARTICLE VIII  ACCELERATION, WAIVERS, AMENDMENTS AND REMEDIES............................ 33

ARTICLE IX  SETOFF...................................................................... 34

ARTICLE X BENEFIT OF AGREEMENT; ASSIGNMENTS............................................. 35
 10.01.   Successors and Assigns........................................................ 35
 10.02.   Assignments by Sprint......................................................... 35
 10.03.   Dissemination of Information.................................................. 36
 
ARTICLE XI MISCELLANEOUS ............................................................... 36
 11.01.   Notices....................................................................... 36
 </TABLE> 
                                      ii
<PAGE>
 
<TABLE> 
<CAPTION> 
<S>                                                                                    <C> 
11.02.  Entire Agreement............................................................... 37
11.03.  Waiver......................................................................... 37
11.04.  Governing Law.................................................................. 38
11.05.  Severability................................................................... 38
11.06.  Counterparts................................................................... 38
11.07.  Headings....................................................................... 38
11.08.  No Third-Party Beneficiaries................................................... 38
11.09.  Interpretation................................................................. 38
11.10.  Inclusion of Information in Schedules.......................................... 39
11.11.  Amendment...................................................................... 39
11.12.  Joint and Several Obligations of Borrowers..................................... 39
11.13.  Effectiveness of Agreement..................................................... 39
11.14.  Reliance on Investment Agreement............................................... 39
11.15.  Exclusive Jurisdiction and Consent to Service of Process....................... 39
11.16.  WAIVER OF JURY TRIAL........................................................... 41
 </TABLE>

                                      iii
<PAGE>
 
                                                                            PAGE
                                                                            ----
EXHIBITS
- --------

Exhibit A (Section 1)         Convertible Senior Promissory Note
Exhibit B (Section 6.1(d))    Compliance Certificate
Exhibit C ( Section 6.2(a))   Agreement to Add Borrower
Exhibit D (Section 10.2.1)    Assignment Agreement


 
SCHEDULES
- ---------

Schedule 6.10 - Investments
Schedule 6.11 - Liens
Schedule 6.12 - Certain Affiliate Agreements

                                      iv
<PAGE>
 
                               CREDIT AGREEMENT


     THIS CREDIT AGREEMENT, dated as of February 10, 1998, is between Dolphin,
Inc., a Delaware corporation ("Newco"), and EarthLink Network, Inc., a Delaware
corporation (the "Company"), and Sprint Corporation, a Kansas corporation
("Sprint"), as lender.

     WHEREAS, the respective Boards of Directors of Sprint, the general partner
of Sprint Communications L.P., a Delaware limited partnership ("Sprint L.P.")
and the Company have determined to enter into a strategic relationship in the
area of Internet access and related services and Sprint and Sprint L.P. will
make investments in Newco and the Company in connection with the Merger (as
defined below) of Newco Sub, Inc., a Delaware corporation and wholly-owned
subsidiary of Newco ("Newco Sub") and the Company in order to enhance the
capabilities for growth and financial and strategic success;

     WHEREAS, Sprint, Sprint L.P., the Company, Newco and Newco Sub have entered
into an Investment Agreement as of the date hereof (the "Investment Agreement")
contemplating that strategic alliance and addressing the terms and conditions of
such investment and related transactions;

     WHEREAS, Sprint proposes to make a tender offer (as it may be amended from
time to time as permitted under the Investment Agreement, with the Company's
consent if required thereby, the "Offer") to purchase 1,250,000 shares of common
stock, par value $.01 per share, of the Company (the "Company Common Stock"),
for an aggregate cash consideration of $56,250,000 and at a price per share of
Company Common Stock of $45 net to each seller in cash (such price, as may
hereafter be changed, the "Offer Price"), upon the terms and subject to the
conditions set forth in the Investment Agreement; and the Board of Directors of
the Company has approved the Offer and the other transactions contemplated by
the Investment Agreement and is recommending that the Company's stockholders who
wish to receive cash for their shares of Company Common Stock accept the Offer;

     WHEREAS, immediately following the closing of the Offer, Sprint L.P.
proposes to purchase 4,102,941 shares of Series A Convertible Preferred Stock,
par value $.01 per share of Newco (the "Convertible Preferred Stock") in
exchange for (i) an aggregate cash consideration of $23,750,000, (ii) the
assignment to Newco of 100% of the Sprint Internet Passport Subscribers, and
(iii) entering into a network agreement whereby Newco and the Company will
utilize Sprint's long-distance network under specified terms and conditions;

     WHEREAS, Sprint, Sprint L.P., the Company and Newco will enter into a
marketing agreement whereby Newco and the Company will utilize the Sprint brand
under specified terms and conditions and will, inter alia, have the right to use
                                               ----- ----                       
Sprint L.P. distribution channels under specified terms and conditions and agree
to sell certain Sprint L.P. products;

                                       1
<PAGE>
 
     WHEREAS, Sprint shall provide Newco and the Company, as co-borrowers, with
up to $25 million of Convertible Senior Debt financing (the "Convertible Debt
Financing") on or after the Closing, with such amount to increase to up to $100
million over time, such indebtedness to be evidenced by one or more Notes;

     WHEREAS, the closing of the acquisition of the Convertible Preferred Stock
and the other transactions referred to above other than the Offer shall take
place concurrently with the merger of Newco Sub into the Company (the "Merger")
and the conversion of each outstanding share of Company Common Stock into one
share of Newco Common Stock, par value $.01 per share ("Newco Common Stock')
pursuant to the Merger, in each case upon the terms and subject to the
conditions set forth in the Investment Agreement and/or the Ancillary
Agreements;

     WHEREAS, to induce Sprint and Sprint L.P. to enter into the Investment
Agreement and the Ancillary Agreements, and to consummate the transactions
contemplated thereby, (i) certain stockholders of the Company have entered into
a Stockholders' Agreement with Sprint and Sprint L.P., and (ii) certain other
stockholders have granted to Sprint agreements to vote and/or tender their
shares of Company Common Stock in connection with the transactions contemplated
by the Investment Agreement;

     WHEREAS, each Borrower hereunder recognizes and acknowledges that this
Agreement, the Investment Agreement and the Ancillary Agreements, and the
Advances made hereunder to such Borrower and to Affiliates of such Borrower,
serve to benefit, directly or indirectly, such Borrower; and

     WHEREAS, Newco intends to make the credit facility provided for in this
Agreement and Advances thereunder available to its Subsidiaries for working
capital and other purposes permitted hereunder.

     NOW, THEREFORE, in consideration of the representations, warranties,
covenants and agreements contained in this Agreement, the Investment Agreement
and in the Ancillary Agreements, and for other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties hereto
hereby agree as follows:


                                   ARTICLE I

                                  DEFINITIONS

     SECTION 1.01.  Definitions.  Definitions as used in this Agreement:

     "Action" means any action, suit, arbitration, inquiry, proceeding or
investigation by or before any Governmental Entity.

                                       2
<PAGE>
 
     "Advance" means a borrowing hereunder.

     "Affiliate" and "Associate" shall have the respective meanings ascribed to
such terms in Rule 12b-2 under the Securities Exchange Act of 1934, as amended,
as such Rule is in effect on the Closing Date.

     "Aggregate Available Commitment" means, at any time, the Aggregate
Commitment at such time, minus the aggregate amount of all Advances.
                         -----                                      

     "Aggregate Commitment" means the total amount which Sprint is obligated to
advance under Section 2.04 below
              ------------      

     "Agreement" means this Credit Agreement, as it may be amended, modified or
restated and in effect from time to time.

     "Ancillary Agreements" is defined in Article VIII of the Investment
Agreement.

     "Authorized Officer" means any of the chairman, chief executive officer or
chief financial officer of the Borrowers, or any other officer of the Borrowers
they or any of them designate to Sprint.

     "Average Market Price" means the average of the Closing Prices for the 30
Trading Days immediately preceding an Advance.

     "Bankruptcy Code" means Title 11, United States Code, sections 101 et seq.,
                                                                        -- ---  
as the same may be amended from time to time, and any successor thereto or
replacement therefor which may be hereafter enacted.

     "Borrower" means each of Newco and the Company and any Subsidiary added as
a "Borrower" under Section 6.02(a).
                   --------------- 

     "Borrower Filed SEC Documents" is defined in Section 6.01.
                                                  ------------ 

     "Borrowing Date" means a date on which an Advance is made hereunder.

     "Borrowing Notice" is defined in Section 2.05.
                                      ------------ 

     "Business Day" means with respect to any borrowing or payment, a day (other
than a Saturday or Sunday) on which banks generally are open in Kansas City,
Missouri for the conduct of substantially all of their commercial lending
activities.

     "Business Combination" shall have the same meaning as given such term in
the Governance Agreement.

                                       3
<PAGE>
 
     "Capitalized Lease" of a Person means any lease of Property by such Person
as lessee which would be capitalized on a balance sheet of such Person prepared
in accordance with GAAP.

     "Capitalized Lease Obligations" of a Person means the amount of the
obligations of such Person under Capitalized Leases which would be shown as a
liability on a balance sheet of such Person prepared in accordance with GAAP.

     "Closing" shall have the same meaning as given such term in the Investment
Agreement.

     "Closing Price" per share of Common Stock on any date shall be the last
sale price, regular way, or, in case no such sale takes place on such day, the
average of the closing bid and asked prices, regular way, in either case as
reported in the principal consolidated transaction reporting system with respect
to securities listed or admitted to trading on the New York Stock Exchange or,
if the Common Stock is not listed or admitted to trading on the New York Stock
Exchange, as reported in the principal consolidated transaction reporting system
with respect to securities listed on the principal national securities exchange
on which the Common Stock is listed or admitted to trading or, if the Common
Stock is not listed or admitted to trading on any national securities exchange,
if such shares of Common Stock are not listed or admitted to trading on such
exchange, as reported on the NASDAQ National Market, or if not quoted on the
NASDAQ National Market, the last quoted sale price or, if not so quoted, the
average of the high bid and low asked prices in the over-the-counter market, as
reported by NASDAQ or such other system then in use, or, if on any such date the
Common Stock is not quoted by any such organization, the average of the closing
bid and asked prices as furnished by a professional market maker making a market
in the Common Stock selected by the Board of Directors.  If the Common Stock is
not publicly held or so listed or publicly traded, "Closing Price" shall mean
the Fair Market Value per share as determined in good faith by the Board of
Directors.

     "Code" means the Internal Revenue Code of 1986.

     "Common Stock" shall mean Newco's authorized Common Stock, $.01 par value,
as constituted on the Closing Date, and any stock into which such Common Stock
may thereafter be changed or reclassified, including, without limitation, any
Surviving Entity Securities; provided, however, that if Common Stock is changed
or reclassified into more than one class or series of equity securities, the
term "Common Stock" shall refer to the class or series of such equity securities
having the greatest general voting power in the election of directors of Newco
as compared to the other classes or series of equity securities.

     "Company" has the meaning set forth in the recitals.

     "Condemnation" is defined in Section 7.08.
                                  ------------ 

                                       4
<PAGE>
 
     "Consolidated" or "consolidated", when used in connection with any
calculation, means a calculation to be determined on a consolidated basis (as
determined in accordance with GAAP) for Newco.

     "Consolidated Person" means, for the taxable year of reference, each Person
which is a member of the affiliated group of  which Newco is a member if
consolidated returns are or shall be filed for such affiliated group for federal
income tax purposes or any combined or unitary group of which  Newco is a member
for state income tax purposes.

     "Contingent Obligation" of a Person means any agreement, undertaking or
arrangement by which such Person assumes, guarantees, endorses, contingently
agrees to purchase or provide funds for the payment of, or otherwise becomes or
is contingently liable upon, the obligation or liability of any other Person, or
agrees to maintain the net worth or working capital or other financial condition
of any other Person, or otherwise assures any creditor of such other Person
against loss, including, without limitation, any operating agreement or take-or-
pay contract or application for a letter of credit.

     "Controlled Group" means all members of a controlled group of corporations
and all trades or businesses (whether or not incorporated) under common control
which, together with  Newco or any of its Subsidiaries and after giving effect
to the transactions contemplated by the Investment Agreement and the Ancillary
Agreements, are treated as a single employer under Section 414 of the Code.

     "Conversion Rights," "Conversion Notice," "Conversion Amount," and
"Conversion Price" are defined in Section 3.01.
                                  ------------ 

     "Current Market Price" per share of Newco Common Stock on any date shall be
deemed to be the Closing Price per share of Newco Common Stock on the Trading
Day immediately prior to such date, except that "Current Market Price" for
purposes of  an adjustment resulting from a Spin-Off under Section 3.01(c)(v)
                                                           ------------------
shall mean the average Closing Price for the 20 Trading Days following the 10th
Trading Day following the effective date of any Spin-Off, as defined in Section
                                                                        -------
3.01(c)(v).
- ---------- 

     "Default" means any event or condition the occurrence of which would, with
the passage of time or the giving of notice, or both, constitute an Event of
Default.

     "Encumbrance" means any charge, claim, community property interest,
equitable interest lien, tax lien, option, pledge, security interest, right of
first refusal or restriction of any kind, including any restriction on transfer,
receipt of income or exercise of any other attribute of ownership.

     "Environment" means soil, land surface or subsurface strata, surface waters
(including navigable waters, ocean waters, streams, ponds, drainage basins, and
wetlands), groundwaters, drinking water supply, stream sediments, ambient air
(including indoor air), plant and animal life, and any other environmental
medium or natural resource.

                                       5
<PAGE>
 
     "Environmental Law" means any Law that requires or relates to protection of
human health or the Environment.

     "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time.

     "Event of Default" is defined in Article VII.

     "Facility Termination Date" is defined in Section 2.02.
                                               ------------ 

     "Fair Market Value" means the amount which a willing buyer would pay a
willing seller in an arm's-length transaction.

     "Fiscal Quarter" means one of the four consecutive three-month accounting
periods beginning on the first day of each Fiscal Year.

     "Fiscal Year" means the twelve-month accounting period ending on December
31 of each year.

     "Foreign Entity" means any Person that is not a resident of the United
States or organized under the laws of the United States or any state thereof or
any Person that has property equal to a Substantial Portion located outside the
United States.

     "GAAP" means generally accepted accounting principles, consistently
applied.

     "Governance Agreement" means the Governance Agreement, dated as of the date
hereof, among Sprint, Sprint L.P., the Company and Newco.

     "Governmental Entity" means any federal, state, foreign or local
government, any of its subdivisions, administrative agencies, authorities,
commissions, boards or bureaus, any federal, state, foreign or local court or
tribunal and any arbitrator.

     "Holder" is defined in Section 3.01.
                            ------------ 

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

     "Indebtedness" of a Person means such Person's (a) obligations for borrowed
money, (b) obligations representing the deferred purchase price of Property or
services (other than accounts payable arising in the ordinary course of such
Person's business), (c) obligations, whether or not assumed, secured by Liens or
payable out of the proceeds or production from Property now or hereafter owned
or acquired by such Person, (d) obligations which are evidenced by notes,
acceptances, or other instruments, (e) Capitalized Lease Obligations, (f)
Contingent Obligations, and 

                                       6
<PAGE>
 
(g) repurchase obligations or liabilities of such Person with respect to
accounts receivable or notes receivable sold by such Person.

     "Investment" of a Person means any loan, advance (other than commission,
travel and similar advances to officers and employees made in the ordinary
course of business), extension of credit (other than accounts receivable arising
in the ordinary course of business), or contribution of capital by such Person
to any other Person or any investment in, or purchase or other contribution of,
the stock, partnership interests, notes, debentures or other securities of any
other Person made by such Person valued at historical cost.

     "Investment Agreement" is defined in the recitals hereof.

     "Knowledge" means the actual knowledge of any of the executive officers and
directors of the Parties (except in respect of the Company, John W. Sidgmore)
without any duty to inquire or attribution of knowledge from any other Person to
the persons in such capacities.

     "Law" means any federal, state, local, municipal, foreign, international,
multinational, or other judicial or administrative order, judgment, decree,
constitution, law, ordinance, common law of California and Delaware, regulation,
statute, or treaty.

     "Lien" means any lien, pledge, claim, security interest or Encumbrance
whatsoever, mortgage, deed of trust, security interest (including any
Capitalized Lease or other title retention agreement), charge, pledge, retention
of title agreement, easement, encroachment, condition, reservation, covenant,
lis pendens lien, claim of lien, adverse claim, restriction on attributes of
ownership, or other Encumbrance affecting title.

     "Loan" means the aggregate of all Advances.

     "Loan Documents" means this Agreement, the Notes, and the other documents
and agreements contemplated by this Agreement and executed by any Borrower in
favor of Sprint in connection with this Agreement.

     "Margin Stock" has the meaning assigned to that term under Regulation G of
the Board of Governors of the Federal Reserve.

     "Marketing Agreement" means the Marketing and Distribution Agreement, dated
as of the date hereof, among Sprint L.P., Newco and the Company.

     "Material Adverse Effect" means any change or effect having a material
adverse effect (or any development as to which there is a substantial
likelihood, insofar as can be foreseen, would have such an effect) on the
business, properties, assets, condition (financial or otherwise), or results of
operations of Newco, the Company and their Subsidiaries taken as a whole.

                                       7
<PAGE>
 
     "Multiemployer Plan" means a Plan coming within Section 4001(a)(3) of
ERISA.

     "Net Income" means, for any computation period, with respect to Newco on a
consolidated basis with its Subsidiaries (other than any Subsidiary which is
restricted from declaring or paying dividends or otherwise advancing funds to
its parent whether by contract or otherwise), cumulative net income earned
during such period in accordance with GAAP.

     "Note" and "Notes" means one or more of the Convertible Senior Promissory
Notes substantially in the form attached hereto as Exhibit A each evidencing an
Advance (including any such Convertible Senior Promissory Notes issued in
exchange or substitution).

     "Obligations" means all unpaid principal of and accrued and unpaid interest
on the Notes, all accrued and unpaid fees and all expenses, reimbursements,
indemnities and other obligations of a Borrower to Sprint or any indemnified
party hereunder arising under any of the Loan Documents.

     "Ordinary Course of Business" means an action taken by a Person will be
deemed to have been taken in the "Ordinary Course of Business" only if:

          (a)  such action is consistent with the past practices of such Person
     and is taken in the ordinary course of the normal day-to-day operations of
     such Person; and

          (b)  such action is not required to be authorized by the board of
     directors of such Person (or by any Person or group of Persons exercising
     similar authority);

     "Party" and "Parties" shall mean individually a party to this Agreement and
collectively all of the parties to this Agreement.

     "Payment Date" means the fifteenth day of each January, April, July and
October and any other date on which any payment of principal and/or interest is
due hereunder or under any Note.

     "PBGC" means the Pension Benefit Guaranty Corporation or any successor
thereto.

     "Person" means any natural person, corporation, limited liability company,
firm, joint venture, partnership, association, enterprise, trust or other entity
or organization, or any government or political subdivision or any agency,
department, division or instrumentality of any of the foregoing.

     "Plan" means an employee pension benefit plan, as defined in Section 3(2)
of ERISA, as to which Newco or any member of the Controlled Group has any
liability.

     "Prime Rate" means the interest rate from time to time on corporate loans
at large U.S. money center commercial banks (as published from time to time in
The Wall Street Journal under the caption "Money Rates - Prime Rates"). In the
event that such rate is no longer published in The Wall Street Journal as
contemplated by this definition, then the reference rate of interest or formula,

                                       8
<PAGE>
 
identified in a written notice from Sprint to Newco, that is substantially
similar to the reference rate contemplated by this definition shall be used.

     "Property" of a Person means any and all property, whether real, personal,
tangible, intangible, or mixed, of such Person, or other assets owned, leased or
operated by such Person.

     "Purchase" means any transaction, or any series of related transactions,
consummated on or after the date of this Agreement, by which Newco or any of its
Subsidiaries (a) acquires any going business or all or substantially all of the
assets of any other Person, whether through purchase of assets, merger or
otherwise, or (b) directly or indirectly acquires (in one transaction or as the
most recent transaction in a series of transactions) at least a majority (in
number of votes) of the securities of a corporation which have ordinary voting
power for the election of directors (other than securities having such power
only by reason of the happening of a contingency) or a majority in interest (by
percentage or voting power) of the outstanding interests of any other Person.

     "Release" is defined in the Comprehensive Environmental Response,
Compensation and Liability Act, as amended, 42 U.S.C. (S) 9601 et seq.
                                                               -- --- 

     "Reportable Event" means a reportable event as defined in Section 4043 of
ERISA and the regulations issued under such section, with respect to a Plan,
excluding, however, such events as to which the PBGC has by regulation waived
the requirement of Section 4043(a) of ERISA that it be notified within 30 days
of the occurrence of such event; provided, that a failure to meet the minimum
                                 --------                                    
funding standard of Section 412 of the Code and of Section 302 of ERISA shall be
a Reportable Event regardless of the issuance of any such waiver of the notice
requirement in accordance with Section 4043(a) of ERISA.

     "Returns" means all tax returns that must be filed with any federal, state
or local taxing authority.

     "SEC" means the Securities and Exchange Commission of the United States
Government.

     "Single Employer Plan" means a Plan subject to Title IV of ERISA, other
than a Multiemployer Plan.

     "Sprint" means Sprint Corporation, a Kansas corporation and its successors
and assigns.

     "Stockholders' Equity" means stockholders' equity of Newco determined in
accordance with GAAP.

     "Subsidiary" of any Person means any corporation or other entity of which a
majority of the voting power of the voting equity securities or equity interest
is owned, directly or indirectly, by such Person.

                                       9
<PAGE>
 
     "Substantial Portion" means, with respect to the Property of Newco and its
Subsidiaries, Property which (a) represents more than 15% of the consolidated
assets of  Newco, as would be shown in the consolidated financial statements of
Newco as at the end of the Fiscal Quarter next preceding the date on which such
determination is made, or (b) is responsible for more than 15% of the
consolidated net sales or of the Net Income of Newco for the 12-month period
ending as of the end of the Fiscal Quarter next preceding the date of
determination.

     "Surviving Entity" and "Surviving Entity Securities" are defined in Section
                                                                         -------
3.01(c)(iv) hereof.
- ----------         

     "Tax" or "Taxes" means all income, profits, franchise, gross receipts,
capital, sales, use, withholding, value added, ad valorem, transfer, employment,
social security, disability, occupation, property, severance, production, excise
and other taxes, duties and similar governmental charges and assessments imposed
by or on behalf of any Governmental Entity (including interest and penalties
thereon).

     "Termination Event" means, with respect to a Plan which is subject to Title
IV of ERISA, (a) a Reportable Event, (b) the withdrawal of Newco or any other
member of the Controlled Group from such Plan during a plan year in which Newco
or any other member of the Controlled Group was a "substantial employer" as
defined in Section 4001(a)(2) of ERISA or was deemed such under Section 4066 of
ERISA, (c) the termination of such Plan or the filing of a notice of intent to
terminate such Plan under Section 4041 of ERISA, or (d) the institution by the
PBGC of proceedings to terminate such Plan or the occurrence of any event or
condition which constitutes grounds under Section 4042 of ERISA for the
termination of, or appointment of a trustee to administer, such Plan.

     "Threatened" means any demand or statement that has been made in writing
that would lead a prudent person to conclude that a claim, proceeding, dispute,
Action, or other matter is likely to be asserted, commenced, taken, or otherwise
pursued in the future.

     "Total Liabilities" means all liabilities of Newco, on a consolidated
basis, reflected on a balance sheet prepared in accordance with GAAP, including
all Indebtedness.

     "Trading Day" means a day on which the principal national securities
exchange, NASDAQ or other securities market on which Newco Common Stock is
listed or admitted to trading is open for the transaction of business or, if
Newco Common Stock is not listed or admitted to trading on any national
securities exchange, any day other than a Saturday, Sunday, or a day on which
banking institutions in the State of New York are authorized or obligated by law
or executive order to close.

     "Unfunded Liability" means the amount (if any) by which the present value
of all vested and unvested accrued benefits under a Single Employer Plan exceeds
the fair market value of assets allocable to such benefits, all determined as of
the then most recent valuation date for such Plan using PBGC actuarial
assumptions for single employer plan terminations.

                                       10
<PAGE>
 
     Any capitalized terms appearing herein and not otherwise defined shall have
the meaning ascribed to them in the Investment Agreement.


                                  ARTICLE II

                                  THE CREDITS

     SECTION 2.01.  Advances.  (a)  From and after the Closing, but prior to the
Facility Termination Date, Sprint agrees, on the terms and subject to the
conditions set forth in this Agreement, to make Advances to the Borrowers from
time to time in amounts not to exceed the Aggregate Available Commitment
existing at such time. Although the Borrowers may obtain multiple Advances
hereunder, this is not a revolving line of credit and Advances may not be repaid
and re-advanced. Prepayment may only be made in accordance with Sections 3.07
                                                                -------------
and 3.08.
- -------- 

     (b)  The Borrowers, jointly and severally, agree that if at any time the
outstanding balance of the Loan exceeds the Aggregate Commitment, the Borrowers
shall repay immediately the then outstanding Loan balance in such amount as is
necessary to eliminate such excess.

     (c)  The Borrowers' obligation to pay the principal of, and interest on,
each Advance shall be evidenced by a Note executed by the Borrowers in the
principal amount equal to such Advance and dated the date of such Advance.  Each
Borrower's joint and several obligations as co-maker of each Note shall exist
regardless of which Borrower actually receives the applicable Advance.

Each Advance shall mature, and the principal amount thereof and any unpaid
accrued interest thereon shall be due and payable, on the 5/th/ anniversary of
the Borrowing Date for such Advance (or as otherwise provided in the related
Note or in Section 3.08).
           ------------  

     SECTION 2.02.  Facility Termination Date. The Facility Termination Date is
the date after which Sprint is no longer obligated to make Advances hereunder
and shall occur upon the first to occur of the following:

     (a)  The 5/th/ anniversary of the Closing;

     (b)  Acceleration by Sprint in accordance with the provisions of Article
          VIII;

     (c)  Consummation of a Business Combination; or

     (d)  Termination of the Marketing Agreement other than a termination by
          Sprint under Section 24(b)(ii) thereof and other than a termination by
          the Company under Section 24(c), 24(d)(i) and 24(d)(ii) thereof.

                                       11
<PAGE>
 
Such termination of the credit facility shall not affect in any way Sprint's
rights, including the Conversion Rights and rights to accelerate the Loans,
under this Agreement and the Notes.

     SECTION 2.03.  Minimum Amount of Each Advance. Each Advance shall be in the
minimum amount of $5,000,000 (and in multiples of $1,000,000 if in excess
thereof); provided, however, that any Advance may be in the amount of the
          --------  -------                                              
Aggregate Available Commitment.

     SECTION 2.04.  Commitment Increases. Sprint shall not be obligated to make
any Advance prior to the Closing.  From and after the Closing the "Aggregate
Commitment" shall be $25,000,000 and shall be automatically increased by the
following amounts on the following dates:

<TABLE>
<CAPTION>
                                                     Aggregate
           Date                        Increase     Commitment
           ----                        --------     ---------- 
     <S>                              <C>          <C>     
     1/st/ Anniversary of Closing     $25,000,000  $ 50,000,000
     2/nd/ Anniversary of Closing     $25,000,000  $ 75,000,000
     3/rd/ Anniversary of Closing     $25,000,000  $100,000,000
</TABLE>

     SECTION 2.05.  Borrowing Notices for New Advances. Newco shall give Sprint
irrevocable notice containing the following information (a "Borrowing Notice")
                                                            ----------------
not later than 10:00 a.m. (Kansas City time) at least ten (10) Business Days and
not more than twenty (20) Business Days before the proposed Borrowing Date of
each Advance:

          (a)  the proposed Borrowing Date, which shall be a Business Day, of
     such Advance;

          (b)  the aggregate amount of such Advance;

          (c)  a statement to the effect that all of the representations and
     warranties of each Borrower contained herein are true and correct (i) as of
     the date referred to in any representation or warranty that addresses a
     matter as of a particular date and (ii) as to all other representations and
     warranties as of the date of such Borrowing Notice, unless in either the
     case of clause (i) or (ii), the inaccuracies under such representations and
     warranties would not, individually or in the aggregate, have a Material
     Adverse Effect; and

          (d)  a description of any Default that exists as to which the proviso
     of clause (g) in Article IV may apply.

Subject to the terms hereof and subject to the satisfaction of the conditions
set forth in Article IV, Sprint shall, not later than noon (Kansas City time) on
             ----------                                                         
each Borrowing Date, make available to Newco immediately available funds in the
amount of the Advance requested to be made on such Borrowing Date.

                                       12
<PAGE>
 
     SECTION 2.06.  Rates Applicable After an Event of Default. During the
continuance of an Event of Default, Sprint may, at its option, by notice to the
Borrowers (which notice may be revoked at the option of Sprint), declare that
for the duration of time during which such Event of Default shall be continuing,
the outstanding balance of the Loan shall bear a floating rate of interest equal
to the Prime Rate, as in effect from time to time, plus five percent (5%) per
annum calculated for actual days elapsed on the basis of a 360-day year.

     SECTION 2.07.  Method of Payment. All payments of the Obligations hereunder
shall be made, without setoff, deduction or counterclaim, in immediately
available funds to Sprint pursuant to wire transfer instructions provided to the
Borrowers by a duly authorized executive officer of Sprint, or absent such
instructions, at Sprint's address specified pursuant to Section 11.01, on the
                                                        -------------         
date when due. If the Borrowers shall be required by law to deduct any such
amounts from or in respect of any sum payable hereunder to Sprint, then the sum
payable hereunder shall be increased so that, after making all required
deductions, Sprint receives an amount equal to the sum it would have received
had no such deduction been made, and the Borrowers, jointly and severally, shall
indemnify Sprint for taxes, assessments and governmental charges imposed by any
jurisdiction on account of amounts paid or payable pursuant to this sentence.
Within 30 days after the date of any payment of any such amount withheld by
either Borrower in respect of any payment to Sprint, such Borrower shall furnish
to Sprint the original or certified copy of a receipt evidencing payment
thereof.

     SECTION 2.08.  Notes.  Upon receipt of a Borrowing Notice, Sprint shall
deliver to the Borrowers a Note for execution by the Borrowers; provided,
                                                                -------- 
however, that Sprint may refuse to deliver such Note if Sprint is not obligated
- -------                                                                        
to make an Advance hereunder.
 
     SECTION 2.09.  Interest Rate; Interest Payment Dates; Interest and Fee
Basis. Interest on principal shall be payable at a rate equal to six percent
(6%) per annum, provided, however, such interest rate may be increased as
provided in this Agreement under certain circumstances to a floating rate equal
to five percent (5%) above the Prime Rate. Interest accrued on each Advance
shall be payable on each Payment Date, commencing with the first Payment Date to
occur after the Borrowing Date, on any date on which principal is prepaid,
whether due to acceleration or otherwise, and at maturity. Interest shall be
calculated for actual days elapsed on the basis of a 360-day year. Interest
shall be payable for the day an Advance is made but not for the day of any
payment on the amount paid if payment is received prior to noon (Kansas City
time) at the place of payment. If any payment of principal of or interest on an
Advance shall become due on a day which is not a Business Day, such payment
shall be made on the next succeeding Business Day and, in the case of a
principal payment, such extension of time shall be included in computing
interest in connection with such payment.

     SECTION 2.10.  Waivers; Special Agreements of Borrowers. Each Borrower
warrants to Sprint that it has adequate means to obtain from the other Borrower,
on a continuing basis, information concerning the financial condition of such
other Borrower, and that it is not relying on Sprint to provide such
information, now or in the future. Each Borrower hereby waives any act or
omission of Sprint (except acts or omissions in bad faith) that materially
increases the scope of such 

                                       13
<PAGE>
 
Borrower's risk, including negligent administration of the loan. As a condition
of payment or performance by either Borrower, Sprint is not required to seek to
enforce any remedies against the other Borrower or any other party liable to
Sprint on account of the Obligations; nor is Sprint required to seek to enforce
or resort to any remedies with respect to any Lien granted to Sprint by the
other Borrower or any other party on account of the Obligations. This Agreement
and the Notes shall remain fully enforceable against a Borrower irrespective of
any defenses which the other Borrower may assert with respect to the
Obligations, including failure of consideration, breach of warranty, fraud,
payment, statute of frauds, bankruptcy, lack of legal capacity, statute of
limitations, lender liability, accord and satisfaction and usury.


                                  ARTICLE III

                           CONVERSION AND PREPAYMENT

     SECTION 3.01.  Conversion. Sprint or a permitted assignee (in either case,
a "Holder") of a Note shall have conversion rights as follows (the "Conversion
Rights"):

          (a)  Optional Conversion Rights and Automatic Conversion.

               (i)    Each Note shall be convertible, in whole or in part, at
          the option of the Holder thereof, at any time, and from time to time,
          at the office of Newco into such number of validly issued, fully paid
          and nonassessable shares of Newco Common Stock, free and clear of all
          Liens of any kind or nature whatsoever, as is determined by dividing
          the outstanding principal balance of such Note at the time of such
          conversion, or the part thereof converted by the Holder, by the
          Conversion Price per share at the time in effect for such Note;
          provided, however, any such conversion shall be in the following
          minimum amounts ("Minimum Conversion Amounts"): (1) If the aggregate
          principal amount of the Notes outstanding at the time of such
          conversion is less than $5,000,000 then the Minimum Conversion Amount
          is such aggregate principal amount; or (2) If the aggregate principal
          amount of the Notes is more than $5,000,000, then the Minimum
          Conversion Amount is equal to $5,000,000 plus such multiples of
          $1,000,000 as the Holder may elect. The Conversion Price per share for
          each Note shall be an amount equal to 130% times the Average Market
          Price of the Newco Common Stock, calculated with reference to the
          related Borrowing Date, which amount shall be inserted in each Note at
          the time of its original issuance in the appropriate space identifying
          the Conversion Price of such Note, subject to adjustment as
          hereinafter provided. It is understood that the Conversion Price for
          each Note, if there is more than one Note, may be different. The
          Conversion Price for each Note shall be subject to adjustment, from
          time to time as set forth in Section 3.01(c).
                                       --------------- 

                                       14
<PAGE>
 
               (ii)   Upon conversion of all or part of the then outstanding
          principal balance of a Note, payment shall be made for all accrued but
          unpaid interest on that portion of such Note converted through the
          date of conversion.

          (b)  Mechanics of Conversion.  If the Holder of a Note desires to
     exercise such right of conversion, such Holder shall give written notice to
     Newco (the "Conversion Notice") of that Holder's election to convert a
     stated amount of the principal balance (the "Conversion Amount") into
     shares of Newco Common Stock, and surrender to Newco, at its principal
     office or at such other office or agency maintained by Newco for such
     purpose, the originally executed Note evidencing such Conversion Amount.
     The Conversion Notice shall also contain a statement of the name or names
     (with addresses) in which the certificate or certificates for Newco Common
     Stock shall be issued. Notwithstanding the foregoing, Newco shall not be
     required to issue any certificates to any person other than the Holder of
     the converted Note unless Newco has obtained reasonable assurance that such
     transaction is exempt from the registration requirements of, or is covered
     by an effective registration statement under, the Securities Act of 1933,
     as amended (the "Act"), and all applicable state securities laws,
     including, if necessary in the reasonable judgment of Newco or its legal
     counsel, receipt of an opinion to such effect from counsel reasonably
     satisfactory to Newco. In no event would such opinion be required if the
     shares of Newco Common Stock could, upon conversion, be resold pursuant to
     Rule 144 or Rule 144A under the Act. Promptly as practicable, and in any
     event within five business days (subject to the last sentence of Section
     3.01(c)(v)), after the receipt of the Conversion Notice and the surrender
     of the Note evidencing at least the Conversion Amount, Newco shall issue
     and deliver, or cause to be delivered, to the Holder of such Note or his
     nominee or nominees, (i) a certificate or certificates for the number of
     shares of Newco Common Stock issuable upon the conversion of such
     Conversion Amount and (ii) if the Conversion Amount is less than the total
     outstanding principal balance of the converted Note which is surrendered, a
     new Note, of like tenor, evidencing the remaining portion of the
     outstanding principal balance which is not converted.  Such conversion
     shall be deemed to have been effected as of the close of business on the
     date Newco received the Conversion Notice and the originally executed Note
     representing at least the Conversion Amount, and the person or persons
     entitled to receive the shares of Newco Common Stock issuable upon
     conversion shall be treated for all purposes as the holder or holders of
     record of such shares of Newco Common Stock as of the close of business on
     such date.

          (c)  Conversion Price Adjustments.

               (i)    If Newco should at any time or from time to time after the
          date of the Advance evidenced by a Note fix a record date for the
          effectuation of a split or subdivision of the outstanding shares of
          Newco Common Stock or the determination of holders of Newco Common
          Stock entitled to receive a dividend or other distribution payable in
          additional shares of Newco Common Stock, then, as of such record date
          (or, if no record date is fixed, as of the close of business on the
          date on 

                                       15
<PAGE>
 
          which the Board of Directors of Newco adopts the resolution relating
          to such dividend, distribution, split or subdivision), the Conversion
          Price for such Note shall be decreased to equal the product of the
          Conversion Price in effect immediately prior to such date for such
          Note multiplied by a fraction, the numerator of which shall be the
          number of shares of Newco Common Stock outstanding immediately prior
          thereto and the denominator of which shall be the number of shares of
          Newco Common Stock outstanding immediately thereafter.

               (ii)   If the number of shares of Newco Common Stock outstanding
          at any time or from time to time after the date of the Advance
          evidenced by a Note is decreased by a combination of the outstanding
          shares of Newco Common Stock, then following such combination, the
          Conversion Price shall be increased to equal the product of the
          Conversion Price in effect immediately prior thereto for such Note
          multiplied by a fraction, the numerator of which shall be the number
          of shares of Newco Common Stock outstanding immediately prior thereto
          and the denominator of which shall be the number of shares of Newco
          Common Stock outstanding immediately thereafter. So long as any of the
          Notes are outstanding, Newco shall not combine any shares of Newco
          Common Stock unless it likewise combines all shares of Newco Common
          Stock.

               (iii)  If Newco shall at any time and from time to time after the
          date of the Advance evidenced by a Note issue rights or warrants to
          all holders of the Newco Common Stock entitling such holders to
          subscribe for or purchase Newco Common Stock at a price per share less
          than the Current Market Price per share of the Newco Common Stock on
          the record date for the determination of stockholders entitled to
          receive such rights or warrants, then, and in each such case, the
          Conversion Price shall be adjusted so that the Holder of such Note
          shall be entitled to receive, upon the conversion thereof, the number
          of shares of Newco Common Stock determined by multiplying the number
          of shares of Newco Common Stock into which such Note was convertible
          on the day immediately prior to such record date by a fraction, (A)
          the numerator of which is the sum of (1) the number of shares of Newco
          Common Stock outstanding on such record date and (2) the number of
          additional shares of Newco Common Stock which such rights or warrant
          entitle holders of Common Stock to subscribe for or purchase ("Offered
          Shares"), and (B) the denominator of which is the sum of (1) the
          number of shares of Newco Common Stock outstanding on the record date
          and (2) a fraction, (x) the numerator of which is the product of the
          number of Offered Shares multiplied by the subscription or purchase
          price of the Offered Shares and (y) the denominator of which is the
          Current Market Price per share of Newco Common Stock on such record
          date.  Such adjustment shall become effective immediately after such
          record date.

               (iv)   If Newco shall be a party to any transaction, including
          any capital reorganization or reclassification of the Newco Common
          Stock (other than a 

                                       16
<PAGE>
 
          transaction described in clauses (i), (ii) and (v) of this Section
                                                                     -------
          3.01(c)), or consolidation or merger of Newco, or the sale or
          --------
          conveyance of all or substantially all of its assets in which the
          previously outstanding shares of Newco Common Stock shall be changed
          into or, pursuant to the operation of law or the terms of the
          transaction to which Newco is a party, exchanged, or would have been
          changed or exchanged as required by the Certificate of Incorporation
          if such Newco Common Stock were outstanding, for different securities
          of Newco or common stock or other securities of another company or
          interests in a non-corporate entity (such other company or non-
          corporate entity is referred to herein as the "Surviving Entity") or
          other property (including cash) or any combination of the foregoing,
          then, as a condition to the consummation of such transaction, lawful
          and adequate provision shall be made whereby each Holder of a Note
          shall thereafter have the right to receive, in lieu of the shares of
          Newco Common Stock immediately theretofore receivable with respect to
          the conversion of such Holder's Note, such shares of stock or
          securities (such stock and securities are referred to herein as the
          "Surviving Entity Securities") or assets as are issued or are payable
          with respect to or in exchange for the shares of Newco Common Stock
          which such Holder would have held had his Note been converted in full
          immediately prior to such transaction. In any such case, appropriate
          provisions shall be made with respect to the rights and interests of
          each Holder of a Note to the end that such conversion rights
          (including, without limitation, provisions for adjustment of the
          Conversion Price) shall thereafter be applicable, as nearly as may be
          practicable in relation to any shares of Surviving Entity Securities
          or assets thereafter deliverable upon the exercise thereof.

               (v)    If Newco shall at any time or from time to time after the
          date of an Advance declare, order, pay or make a dividend or other
          distribution (including, without limitation, any distribution of stock
          or other securities or property or rights or warrants to subscribe for
          securities of Newco or any of its Subsidiaries by way of dividend) on
          Newco Common Stock, other than (x) regular quarterly dividends payable
          in cash or extraordinary cash dividends in an aggregate amount not to
          exceed in any Fiscal Quarter an amount equal to 6.25% of the Net
          Income for the twelve-month period ending on the day immediately
          preceding the first day of such Fiscal Quarter, (y) shares of Newco
          Common Stock which are referred to in clause (i) of this Section
                                                                   -------
          3.01(c), or (z) rights or warrants which are referred to in clause
          ------                                                            
          (iii) of this Section 3.01(c), then, as a condition to the
                        --------------                              
          consummation of such dividend or distribution, the Conversion Price of
          each Note shall be adjusted so that the Holder of each Note shall be
          entitled to receive, upon the conversion of the Note, the number of
          shares of Common Stock determined by multiplying (1) the number of
          shares of Newco Common Stock into which such share was convertible on
          the day immediately prior to the record date fixed for the
          determination of stockholders entitled to receive such dividend or
          distribution by (2) a fraction, the numerator of which shall be the
          Current Market Price per share of Newco Common Stock as of the third
          Trading Day prior to such record date, and the denominator of which
          shall be such Current Market 

                                       17
<PAGE>
 
          Price per share of Newco Common Stock less the Fair Market Value per
          share of Newco Common Stock (as determined in good faith by the Board
          of Directors of Newco, a certified resolution with respect to which
          shall be mailed to each Holder of a Note) of such dividend or
          distribution; provided, however, that in the event of a distribution 
                        --------  ------- 
          of shares of capital stock of a Subsidiary of Newco (a "Spin-Off")
          made to holders of shares of Newco Common Stock, the numerator of such
          fraction shall be the sum of the Current Market Price per share of
          Newco Common Stock and the Current Market Price of the number of
          shares (or the fraction of a share) of capital stock of the Subsidiary
          which is distributed in such Spin-Off in respect of one share of Newco
          Common Stock and the denominator of which shall be the Current Market
          Price per share of Newco Common Stock. An adjustment made pursuant to
          this clause (v) shall be made upon the opening of business on the next
          Business Day following the date on which any such dividend or
          distribution is paid and shall be effective retroactively to such time
          immediately after the close of business on the record date fixed for
          the determination of stockholders entitled to receive such dividend or
          distribution; provided, however, if the proviso in the foregoing
                        --------  ------- 
          sentence applies, then such adjustment shall be made and be effective
          as of the 30th Trading Day after the effective date of such Spin-Off,
          and in the event all or part of this Note is converted after the
          record date for such Spin-Off but prior to the 30th Trading Day after
          the effective date of the Spin-Off, Newco will deliver to the holder
          of this Note in accordance with Section 3.01(b) that number of shares
                                          --------------- 
          which would be issued prior to the appropriate adjustment, and issue
          the additional number of shares which would be issuable as a result of
          the applicable adjustment pursuant to this clause (v) within 35
          Trading Days after the effective date of such Spin-Off.

     SECTION 3.02.  No Impairment. Newco will not, by amendment of its
Certificate of Incorporation, Bylaws or other organizational documents or
through any reorganization, reclassification, recapitalization, transfer of
assets, consolidation, merger, dissolution, issue or sale of securities or any
other voluntary action, avoid or seek to avoid the observance or performance of
any of the terms to be observed or performed hereunder by Newco but will at all
times in good faith assist in the carrying out of all the provisions of Section
                                                                        -------
3.01 and in the taking of all such action as may be necessary or appropriate in
- ----                                                                           
order to protect the Conversion Rights of each Holder of the Notes against
impairment.  Without limiting the foregoing, Newco will not effect any
transaction described in this Section 3.02, the result of which is to adversely
                              ------------                                     
affect any of the rights of holders of Newco Common Stock relative to the rights
of holders of any other securities of Newco other than the Notes.

     SECTION 3.03.  Stock Transfer Taxes. The issuance of stock certificates
upon the conversion of a Note shall be made without charge to the Holder thereof
for any tax in respect of such issuance. Newco shall not, however, be required
to pay any tax which may be payable in respect of any transfer involved in the
issuance and delivery of shares in any name other than that of the Holder of the
applicable Note, and Newco shall not be required to issue or deliver any such
stock 

                                       18
<PAGE>
 
certificate unless and until the person or persons requesting the issuance
thereof shall have paid to Newco the amount of such tax, if any.

     SECTION 3.04.  No Fractional Shares: Certificate as to Adjustments. (a) No
fractional shares shall be issued upon conversion of a Note, and the number of
shares of Common Stock to be issued shall be rounded to the nearest whole share.

     (b)  Upon the occurrence of each adjustment or readjustment of the
Conversion Price of a Note pursuant to Section 3.01(c), Newco, at its expense,
                                       ---------------                        
shall promptly compute such adjustment or readjustment in accordance with the
terms hereof and prepare and furnish to the Holder of each Note a certificate
setting forth such adjustment or readjustment for such Holder's Note and showing
in detail the facts upon which such adjustment or readjustment is based.  Newco
shall, upon the written request at any time by a Holder of a Note, furnish or
cause to be furnished to such Holder a like certificate setting forth (A) such
adjustment and readjustment, (B) the Conversion Price at the time in effect for
such Note, and (C) the number of shares of Newco Common Stock and the amount, if
any, of other property which at the time would be received upon the total
conversion of such Note.

     SECTION 3.05.  Notices of Record Date. In the event of any taking by Newco
of a record of the holders of any class of securities for the purpose of
determining the holders thereof who are entitled to receive any dividend (other
than a cash dividend) or other distribution, any right to subscribe for,
purchase or otherwise acquire any shares of stock or any class of any other
securities or property, or to receive any other right, Newco shall mail to each
Holder of the Notes, at least ten (10) Business Days prior to the date specified
therein, a notice specifying the date on which any such record is to be taken
for the purpose of such dividend, distribution or right, and the amount and
character of such dividend, distribution or right. Newco shall not issue rights
or warrants described in Section 3.01(c)(iii), consummate any reorganization,
                         --------------------                                
reclassification, consolidation, merger or sale described in Section
                                                             -------
3.01(c)(iv), or dividend or distribution described in Section 3.01(c)(v), unless
- -----------                                           ------------------        
it provides each Holder of the Notes at least ten (10) Business Days advance
notice thereof.

     SECTION 3.06.  Reservation of Securities Issuable upon Conversion. Newco
shall at all times reserve and keep available out of its authorized but unissued
shares of Common Stock, solely for the purpose of effecting the conversion of
the Notes, free from any preemptive right or other obligation, such number of
its shares of Newco Common Stock as shall from time to time be sufficient to
effect the conversion of all of the outstanding principal balance of the Notes
issued under this Agreement; and if at any time the number of authorized but
unissued shares of Newco Common Stock shall not be sufficient to effect the
conversion of all of the outstanding principal balance of the Notes issued under
this Agreement, in addition to such other remedies as shall be available to the
Holders of the Notes, Newco will take such corporate action as may be necessary
to increase its authorized but unissued shares of Newco Common Stock to such
number of shares as shall be sufficient for such purposes. Newco shall prepare
and shall use its best efforts to obtain and keep in force such governmental or
regulatory permits or other authorizations as may be required by law, and shall
comply with all requirements as to registration, qualification or listing of the
Newco Common Stock in order to enable Newco to lawfully issue and deliver to the
Holders of the Notes such number 

                                       19
<PAGE>
 
of shares of its Newco Common Stock as shall from time to time be sufficient to
effect the conversion of all of the outstanding principal balance of the Notes
issued under this Agreement.

     SECTION 3.07.  Prepayment. From and after the date which is 42 months after
the Borrowing Date applicable to a Note, the Borrowers shall have the right to
prepay such Note, upon not less than thirty (30) nor more than sixty (60) days'
prior notice setting forth the amount (each prepayment shall be made in the
minimum amount of $5,000,000 and in $1,000,000 increments over the minimum
amount) that it wishes to prepay of such Note and the date of such prepayment
("Prepayment Notice"). In the event that the Borrowers prepay a Note in part,
the Borrowers shall execute and deliver to Holder a new Note in a principal
amount equal to the principal remaining outstanding. Delivery of a Prepayment
Notice shall not affect Holder's right to convert any such Note, in whole or in
part, prior to the date set for prepayment.

     SECTION 3.08.  Mandatory Prepayments. (a) Newco or the Company shall, as
the case may be, notify Sprint that it intends to enter into a Business
Combination or that a Business Combination may occur at least thirty (30) days
prior to consummation of such proposed Business Combination, setting forth in
such notice all the material facts relating to the Business Combination. Prior
to the consummation of such Business Combination, the Holders shall continue to
have the right to convert the Notes as herein provided. From and after the
consummation of such Business Combination and for a thirty (30) day period
thereafter, the Holders shall have the right to require the Borrowers to prepay
all principal and accrued interest on the Notes (calculating accrued interest to
the date of such prepayment), plus an amount equal to 1% of the principal amount
of such Notes. Such mandatory prepayment shall be made on or before the tenth
day after notice is given by Sprint to the Borrowers demanding such prepayment.

     (b)  In the event the Facility Termination Date occurs pursuant to Section
2.02(d), then each of the Notes outstanding hereunder shall be required to be
prepaid, without the necessity of any notice or demand by Sprint or any Holder,
on or before the first Business Day following the end of one year after such
Facility Termination Date.

     (c)  The foregoing provisions of this Section 3.08 shall not affect in any
                                           ------------                        
way the obligation of the Borrowers to pay any Note on its maturity date if such
maturity date is earlier than the required prepayment date.

     SECTION 3.09.  Stockholder Rights Plan. Notwithstanding any other provision
of this Agreement to the contrary, if Newco shall adopt a stockholders rights
plan (sometimes known as a "poison pill" plan), and shall declare, order, pay or
make a dividend or other distribution of rights thereunder with respect to the
Newco Common Stock (whether or not separate from the Newco Common Stock), each
Holder of a Note shall be entitled to receive from Newco, upon conversion of
such Note into Newco Common Stock pursuant to Article III, all of the rights
distributed under such plan (but without any limitation or restriction on the
exercise of such rights) fully and to the same extent as if immediately prior to
the earlier of such distribution or any record date therefor such Holder had
converted all of such Holder's outstanding principal balance on the Notes into
shares of 

                                       20
<PAGE>
 
Newco Common Stock. The preceding sentence shall provide the exclusive
protection under this Agreement to the Holders of the Notes (including
adjustments that would otherwise be required by Section 3.01(c)) with respect to
the subject matter of the immediately preceding sentence.

     SECTION 3.10.  Tolling of Automatic Conversion and Other Time periods for
HSR Compliance. Notwithstanding any other provision of this Agreement to the
contrary, until such time as the filing and waiting period requirements of the
HSR Act relating to the conversion of any of the Notes into Common Stock
pursuant to Article III shall have been complied with, if any, and there shall
be no action taken or instituted by the United States Department of Justice or
the United States Federal Trade Commission to delay, enjoin or impose conditions
on such conversion, and such waiting period applicable under the HSR Act shall
have expired or received early termination: (i) the date for any prepayments
pursuant to Section 3.07 or 3.08 shall be automatically extended for a period of
            --------------------                                                
five (5) Business Days beyond the date of expiration or early termination of the
waiting period of the HSR Act (as so extended, the "Extended Redemption Date")
and each Holder of Notes shall be entitled to convert any or all of the
outstanding principal balance of such Notes into Common Stock prior to the
Extended Redemption Date; and (ii) each other date or event that would otherwise
impair any right to convert the Notes into Common Stock or otherwise impair the
rights of the Notes shall be tolled until the Extended Redemption Date.  Any
Holder of Notes who is required to comply with the filing and waiting period
requirements of the HSR Act with respect to the conversion of any Notes shall
use commercially reasonable efforts to cause such filing to be made as soon as
practicable after such Holder has provided notice of its intention to convert
such Notes and to diligently and in good faith pursue expiration or termination
of the waiting period of the HSR Act, provided no conditions are imposed on
Sprint.


                                  ARTICLE IV

                              ADVANCE CONDITIONS

     Sprint shall not be required to make a requested Advance, if on the
proposed Borrowing Date for such Advance:

          (a)  There is then outstanding any "Recommended Third Party Offer," as
     such term is defined in the Governance Agreement;

          (b)  All representations and warranties of the Borrowers contained
     herein are not true and correct (i) as of the date referred to in any
     representation or warranty that addresses a matter as of a particular date
     and (ii) as to all other representations and warranties as of the date of
     such proposed Advance, unless, in either the case of clause (i) or (ii),
     the inaccuracy of such representations and warranties would not,
     individually or in the aggregate, have a Material Adverse Effect;

                                       21
<PAGE>
 
          (c)  The Average Market Price of the Newco Common Stock is less than
     $13.00 (adjusted after the date hereof for any stock split, stock dividend
     or other subdivision or combination of the Newco Common Stock);

          (d)  A Borrowing Notice shall not have been properly submitted with
     respect to such Advance;

          (e)  A duly executed Note representing the Advance has not been
     received by Sprint;

          (f)  The Facility Termination Date shall have occurred; or

          (g)  A Default or Event of Default has occurred and is continuing or
     will exist as a result of the requested Advance; provided, however, this
     clause (g) shall not apply to any Default, the facts of which have been
     specifically disclosed to Sprint in the Borrowing Notice for such Advance
     and as to which Sprint has, within five (5) Business Days after Sprint's
     receipt of the Borrowing Notice, neither advised the Borrowers of its
     intent to declare an Event of Default nor, advised the Borrowers that it
     intends to exercise its rights in this clause (g) and not make the
     requested Advance (as is Sprint's right, exercising such right in its sole
     discretion).

Each Borrowing Notice with respect to each such Advance shall constitute a
representation and warranty by  the Borrowers that the conditions contained in
this Article IV have been satisfied. Sprint may require a duly completed
compliance certificate (dated the Borrowing Date) in substantially the form of
Exhibit B hereto as a condition to making an Advance.
- ---------                                            


                                   ARTICLE V

                        REPRESENTATIONS AND WARRANTIES

     SECTION 5.01.  Organization, Standing and Power.  Each of the Borrowers is
a corporation duly organized, validly existing and in good standing under the
laws of the jurisdiction in which it is incorporated and has all requisite power
and authority to own, lease and operate its properties and to carry on its
business as now being conducted. Each of the Borrowers is duly qualified or
licensed to do business and is in good standing in each jurisdiction in which
the nature of its business or the ownership or leasing of its properties makes
such qualification or licensing necessary, other than in such jurisdictions
where the failure to be so qualified or licensed (individually or in the
aggregate) would not have a Material Adverse Effect.

     SECTION 5.02.  Subsidiaries and Joint Ventures. No Borrower has any
Subsidiary that is not also a Borrower hereunder or has the right to acquire an
equity interest in any corporation, 

                                       22
<PAGE>
 
partnership, limited liability company, joint venture, business trust or any
other entity, except to the extent any such interest may be acquired under
Section 6.10 hereof.
- ------------        

     SECTION 5.03.  Authority; Noncontravention. Each Borrower has the requisite
corporate power and authority to enter into this Agreement and perform its
obligations hereunder and under the Loan Documents and the same have been duly
authorized by all necessary corporate action on the part of such Borrower, and
assuming this Agreement constitutes the valid and binding agreement of Sprint,
constitute valid and binding obligations of such Borrower enforceable against
such Borrower, in accordance with its terms, except to the extent that the
enforcement thereof may be limited by (i) bankruptcy, insolvency,
reorganization, moratorium or other similar laws now or hereafter in effect
relating to creditors' rights generally, and (ii) general principles of equity
regardless of whether enforceability is considered in a proceeding in equity or
at law. The execution and delivery of this Agreement by each Borrower did not,
and the consummation of the transactions contemplated by this Agreement will
not, conflict with, or result in any violation of, or default (with or without
notice or lapse of time, or both) under, or give rise to a right of termination,
cancellation or acceleration of any obligation or to loss by such Borrower of a
material benefit under, or result in the creation of any Lien upon any of the
properties or assets of such Borrower under, (i) the certificate of
incorporation or bylaws of such Borrower, (ii) any loan or credit agreement,
note, bond, mortgage, indenture, lease or other agreement, instrument, permit or
license applicable to such Borrower or its properties or assets or (iii) subject
to the governmental filings and other matters referred to in the following
sentence, any law applicable to such Borrower or its respective properties or
assets, other than, in the case of clauses (ii), (iii) and (iv), any such
conflicts, violations, defaults, rights or Liens that individually or in the
aggregate would not (x) have a Material Adverse Effect, (y) materially impair
the ability of such Borrower to perform its obligations under this Agreement or
(z) prevent the consummation of any of the transactions contemplated by this
Agreement.

     SECTION 5.04.  Taxes. Except as set forth on Schedule 5.04, each Borrower
has timely filed all Returns and reports required to be filed by it, except
where failure to timely file would not have a Material Adverse Effect. All such
Returns and reports are complete and accurate except where the failure to be
complete or accurate would not have a Material Adverse Effect. Each Borrower has
paid or has set up an adequate reserve for the payment of all Taxes shown as due
on such Returns except where the failure to do so would not have a Material
Adverse Effect. Except as set forth on Schedule 5.04, no deficiencies for any
Taxes have been asserted, proposed or assessed against any Borrower that have
not been paid or otherwise settled or reserved against, except for deficiencies
the assertion, proposing or assessment of which would not have a Material
Adverse Effect, and no requests for waivers of the time to assess any such taxes
are pending. There are no material Liens for Taxes (other than for current taxes
not yet due and payable) on the assets of any Borrower.

     SECTION 5.05.  Compliance with Laws. Each Borrower has in effect all
permits from approvals, authorizations, certificates, filings, franchises,
licenses, notices, permits, variances, exemptions, orders and rights ("Permits")
necessary for it to own, lease or operate its properties and assets and to carry
on its business as now conducted, and there has not occurred any default under
any Permit, except for the absence of Permits and for defaults under Permits
that, individually or in 

                                       23
<PAGE>
 
the aggregate, have not had a Material Adverse Effect. Except as disclosed in
the Borrower Filed SEC Documents, such Borrower is in compliance with all
applicable Law, except where failures to so comply, individually or in the
aggregate, would not have a Material Adverse Effect.

     SECTION 5.06.  Environmental Matters. Each Borrower is and at all times has
been in full compliance with, and has not been and is not in violation of or
liable under, any Environmental Law (which compliance includes the possession by
such Borrower of all Permits required under applicable Environmental Law and
compliance with the terms and conditions thereof), except for such failure to be
in compliance which, individually or in the aggregate, would not have a Material
Adverse Effect. There are no pending or, to the Knowledge of any Borrower,
Threatened claims, orders, notices, administrative or judicial actions, or
Encumbrances, relating to environmental, health, and safety liabilities arising
under or pursuant to any federal, state or local Environmental Laws, with
respect to or affecting any of the properties and assets (whether real,
personal, or mixed) in which such Borrower has an interest, except for any such
claim, order, notice, administrative or judicial action, Encumbrance or other
restriction that would not, individually or in the aggregate, have a Material
Adverse Effect.

     SECTION 5.07.  Intellectual Property. Each Borrower owns sufficient right,
title and interest in and to, or has valid licenses of sufficient scope and
duration for, all patents, patent rights, copyrights, trademarks, service marks,
trade names, software, trade secrets, confidential information and other
intellectual property material to the operation of the business of such Borrower
as currently conducted or proposed to be conducted (the "Intellectual Property
Assets") and as proposed to be conducted. The Intellectual Property Assets are
free and clear of all Liens which would materially impair such Borrower's
ability to use the Intellectual Property Assets in the business of such Borrower
as currently conducted or proposed to be conducted. No Borrower has granted any
third party any rights in and to the Intellectual Property Assets except for
distribution rights, OEM rights, end user licenses and rights to reproduce
certain of the Intellectual Property Assets in the Ordinary Course of Business
in connection with the marketing and distribution of such Borrower's product and
service offerings, and which individually and in the aggregate would not have a
Material Adverse Effect. Except as set forth on Schedule 5.8, no Intellectual
Property Assets of any Borrower infringes, or conflicts with, or to the
Knowledge of any Borrower, is alleged to infringe upon or conflict with the
intellectual property rights of any third party. No Borrower has Knowledge that
any of its employees performing or managing key functions of such Borrower is
obligated under any contract (including licenses, covenants or commitments of
any nature) or other agreement, or subject to any judgment, decree or order of
any court or administrative agency, that would interfere with the use of such
employee's best efforts to promote the interests of such Borrower or that would
conflict with such Borrower's business as proposed to be conducted. To the
Knowledge of any Borrower, neither the execution nor delivery of this Agreement,
nor the carrying on of any Borrower's business by the employees of such
Borrower, nor the conduct of the business of any Borrower as proposed, will
conflict with or result in a breach of the terms, conditions or provisions of,
or constitute a default under, any contract, covenant or instrument under which
any of such employees is now obligated, which conflict or breach would have a
Material Adverse Effect. No Borrower utilizes or intends to 

                                       24
<PAGE>
 
utilize any inventions of any of its employees (or people it currently intends
to hire) made prior to their employment by such Borrower.

     SECTION 5.08.  Certain Payments. No Borrower, or any of the directors,
officers, agents, or employees of any Borrower, or to the Knowledge of any
Borrower, any other Person associated with or acting for or on behalf of any
Borrower, has directly or indirectly (a) made any contribution, gift, bribe,
rebate, payoff, influence payment, kickback, or other payment to any Person,
private or public, regardless of form, whether in money, property, or services
(i) to obtain favorable treatment in securing business, (ii) to pay for
favorable treatment for business secured, (iii) to obtain special concessions or
for special concessions already obtained, for or in respect of a Borrower or any
Affiliate of a Borrower, (b) established or maintained any fund or asset that
has not been appropriately recorded in the books and records of the Borrower,
which in the case of either clause (a) or (b) would be in violation of Law or
would have a Material Adverse Effect.


                                  ARTICLE VI

                                   COVENANTS

     So long as any Note remains unpaid, unless Sprint shall otherwise consent
in writing:

     SECTION 6.01.  Financial Reporting. Newco will maintain, for itself and
each Subsidiary, a system of accounting established and administered in
accordance with GAAP, and furnish to Sprint:

          (a)  Within five (5) days after its filing with the SEC, and in any
     event within 120 days after the close of each Fiscal Year, an unqualified
     audit report certified by independent certified public accountants (which
     shall be a "Big Six" accounting firm, or another nationally recognized
     accounting firm), prepared in accordance with GAAP on a consolidated and
     consolidating basis (consolidating statements need not be certified by such
     accountants), including balance sheets as of the end of such period and
     related statements of income and cash flows, accompanied by (i) any
     management letter prepared by said accountants, (ii) a certificate of said
     accountants that, in the course of the examination necessary for their
     certification of the foregoing, they have obtained no knowledge of any
     Default or Event of Default, or if, in the opinion of such accountants, any
     Default or Event of Default shall exist, stating the nature and status
     thereof, and (iii) a letter from said accountants addressed to Sprint
     acknowledging that Sprint is extending credit in primary reliance on such
     financial statements and authorizing such reliance.  Newco hereby
     authorizes Sprint to communicate directly with such accountants following
     the occurrence of a Default or Event of Default.

          (b)  Within five (5) days after its filing with the SEC, and in any
     event within 65 days after the close of the first three Fiscal Quarters of
     each Fiscal Year, consolidated and consolidating unaudited balance sheets
     as at the close of each such period and consolidated and consolidating
     statements of income and cash flows for the period from the beginning of

                                       25
<PAGE>
 
     such Fiscal Year to the end of such Fiscal Quarter, all certified by its
     chief financial officer to have been prepared in accordance with GAAP
     (other than the absence of notes to financial statements and subject to
     normal recurring year-end audit adjustments).

          (c)  As soon as available, but in any event not later than 15 days
     before the end of each Fiscal Year, beginning with Fiscal Year 1998, a copy
     of the plan and forecast (including a projected consolidated and
     consolidating balance sheet, income statement and cash flow statement) of
     Newco and its Subsidiaries for the next Fiscal Year.

          (d)  Together with the financial statements required by clauses (a)
                                                                  -----------
     and (b) above, a compliance certificate in substantially the form of
         ---
     Exhibit B hereto signed by its chief financial officer showing the
     ---------
     calculations necessary to determine compliance with this Agreement and
     stating that no Default or Event of Default exists and no Business
     Combination has occurred, or if any Default or Event of Default exists,
     stating the nature and status thereof.

          (e)  Within 270 days after the close of each Fiscal Year, a statement
     of the Unfunded Liabilities of each Single Employer Plan, certified by an
     actuary enrolled under ERISA.

          (f) As soon as possible and in any event within ten (10) days after
     Newco knows that any event has occurred which is a Termination Event with
     respect to any Plan which is subject to Title IV of ERISA, a statement,
     signed by the chief financial officer of Newco, describing said Termination
     Event and any action which Newco proposes to take with respect thereto.

          (g)  As soon as possible and in any event within ten (10) days after
     receipt by Newco, a copy of (i) any notice, claim, complaint or order to
     the effect that Newco or any of its Subsidiaries is or may be liable to any
     Person as a result of the release by Newco, any of its Subsidiaries, or any
     other Person of any Hazardous Materials into the environment or requiring
     that action be taken by Newco to respond to or clean up a Release of
     Hazardous Materials into the environment, and (ii) any notice, complaint or
     citation alleging any violation of any environmental law or environmental
     permit by Newco or any of its Subsidiaries. Within ten (10) days after
     Newco or any Subsidiary having Knowledge of the proposal, enactment or
     promulgation of any environmental law which would have a Material Adverse
     Effect, Newco shall provide Sprint with written notice thereof.

          (h)  Promptly upon the furnishing thereof to the stockholders of
     Newco, copies of all financial statements, reports and proxy statements so
     furnished.

          (i)  Promptly, and in any event within five (5) days after the filing
     thereof, copies of any reports which Newco or any of its Subsidiaries files
     with the SEC.

                                       26
<PAGE>
 
          (j)  Promptly, and in any event within ten (10) days after learning
     thereof, notification of (i) any tax assessment, demand, notice of proposed
     deficiency or notice of deficiency received by Newco or any other
     Consolidated Person or (ii) the filing of any tax Lien or commencement of
     any judicial proceeding by or against any such Consolidated Person, if any
     such assessment, demand, notice, Lien or judicial proceeding relates to tax
     liabilities in excess of $1,000,000.

          (k)  Such other information (including non-financial information) as
     Sprint may from time to time reasonably request.

Each Borrower shall file, on a timely basis, all reports, schedules, forms,
statements and other documents that are required to be filed with the SEC
("Borrower Filed SEC Documents").  As of their respective dates, the Borrower
Filed SEC Documents will comply in all material respects with the requirements
of the Securities Act of 1933 or the Securities and Exchange Act of 1934, as the
case may be, applicable to such Borrower Filed SEC Documents, and none of the
Borrower Filed SEC Documents will contain any untrue statement of a material
fact or omit to state a 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 6.02.  Subsidiaries as Borrowers; Use of Proceeds. (a) Prior to or
simultaneously with any Person (other than a Foreign Entity), becoming a
Subsidiary of a Borrower the Borrower agrees to cause such Person to enter into
an agreement with Sprint pursuant to which such Person shall be added as a party
hereto and a "Borrower" hereunder, such agreement to be substantially in the
form of Exhibit B hereto.

     (b)  The Borrowers will use the proceeds of the Advances to meet the
working capital needs of the Borrowers. No Borrower will use any of the proceeds
of the Advances to purchase or carry any Margin Stock.

     SECTION 6.03.  Notice of Default. The Borrowers will give prompt notice in
writing to Sprint of the occurrence of any Default or Event of Default and of
any other development relating to any Borrower, financial or other, which would
have a Material Adverse Effect.

     SECTION 6.04.  Conduct of Business; Merger, Sale of Assets, Etc. (a) Each
Borrower will carry on and conduct its business in generally the same manner and
in generally the same fields of enterprise as it is presently conducted and to
do all things necessary to remain duly incorporated, validly existing and in
good standing as a domestic corporation in its jurisdiction of incorporation
and, except where the failure to do so would not have a Material Adverse Effect,
maintain all requisite authority to conduct its business in each jurisdiction in
which its business is conducted.

     (b)  No Borrower shall sell, transfer, lease or otherwise dispose of any of
its Property which, when taken together with all other Property of the Borrowers
disposed of during the twelve 

                                       27
<PAGE>
 
month period ending with the month in which such disposition occurs, constitutes
a Substantial Portion.

     SECTION 6.05.  Taxes. Each Borrower will timely file complete and correct
United States federal and applicable foreign, state and local tax returns
required by applicable law and pay when due all taxes, assessments and
governmental charges and levies upon it or its income, profits or Property,
except those which are being diligently contested in good faith by appropriate
proceedings and with respect to which adequate reserves have been set aside.

     SECTION 6.06.  Insurance. Each Borrower will maintain with financially
sound and reputable insurance companies insurance on all its Property in such
amounts and covering such risks as is consistent with sound business practice,
and Newco will furnish to Sprint upon request full information as to the
insurance carried.

     SECTION 6.07.  Compliance with Laws. Each Borrower will comply with all
laws, rules, regulations, orders, writs, judgments, injunctions, decrees or
awards to which it may be subject, the failure to comply with which would have a
Material Adverse Effect.

     SECTION 6.08.  Maintenance of Properties. Each Borrower will do all things
necessary to maintain, preserve, protect and keep its Property in good repair,
working order and condition, and make all necessary and proper repairs, renewals
and replacements so that its business carried on in connection therewith may be
properly conducted at all times.

     SECTION 6.09.  Inspection. Each Borrower will permit Sprint, by its
representatives and agents, to inspect any of the Property, corporate books and
financial records of each Borrower, to examine and make copies of the books of
accounts and other financial records of each Borrower, and to discuss the
affairs, finances and accounts of each Borrower with, and to be advised as to
the same by, their respective officers at such reasonable times and intervals as
Sprint may designate; provided, that if a Default has occurred and is
                      --------                                       
continuing, each Borrower shall permit Sprint or its representatives and agents,
to exercise the inspection rights set forth above during normal business hours
without limitation, whether by reason of a Borrower's claims of inconvenience,
interruption of business operations or otherwise, so long as no Default has
occurred and is continuing, no such action shall unreasonably and in a material
fashion interfere with the normal business operations of a Borrower. Each
Borrower will keep or cause to be kept, appropriate records and books of account
in which complete entries are to be made reflecting its business and financial
transactions, such entries to be made in accordance with GAAP.

     SECTION 6.10.  Investments and Purchases. No Borrower will make or suffer
to exist any Investments or commitments therefor, or become or remain a partner
in any partnership or joint venture, or make any Purchase of any Person, except:

          (a)  Obligations that have a term of one year or less or are fully
     guaranteed by the United States of America;

                                       28
<PAGE>
 
          (b)  Commercial paper rated A-l or better by Standard and Poor's
     Rating Group or P-l or better by Moody's Investors Service, Inc.;

          (c)  Demand deposit accounts maintained in the ordinary course of
     business;

          (d)  Certificates of deposit issued by and time deposits with
     commercial banks (whether domestic or foreign) having capital and surplus
     in excess of $100,000,000;

          (e)  Repurchase agreements issued by any commercial bank or trust
     company organized under the laws of the United States or any state thereof
     having capital and surplus in excess of $100,000,000 and whose commercial
     paper (or that of its parent corporation) is rated A-1 or better by
     Standard & Poor's Ratings Group or P-1 or better by Moody's Investors
     Service, Inc.;

          (f)  Investments in existence on the date hereof and described in
     Schedule 6.10 hereto; and
     -------------            

          (g)  Subject to Section 6.10(h) hereof, Investments in Borrowers; and
                          ---------------                                      

          (h)  Any other Investment which, when aggregated with all other
     Investments made under this clause (h), does not exceed $20,000,000,
     provided that no more than $5,000,000 of such Investments in the aggregate
     shall be made in one or more Foreign Entities.

     SECTION 6.11.  Liens.  No Borrower will create, incur, or suffer to exist
any Lien in, of or on the Property of such Borrower, except:

          (a)  Liens for taxes, assessments or governmental charges or levies on
     its Property if the same shall not at the time be delinquent or thereafter
     can be paid without penalty, or are being contested in good faith and by
     appropriate proceedings and for which adequate reserves in accordance with
     GAAP shall have been set aside on its books;

          (b)  Liens imposed by law, such as landlords', carriers',
     warehousemen's and mechanics' liens and other similar liens arising in the
     ordinary course of business which secure payment of obligations not more
     than 60 days past due or which are being contested in good faith by
     appropriate proceedings and for which adequate reserves in accordance with
     GAAP shall have been set aside on its books;

          (c)  Liens arising out of pledges or deposits under worker's
     compensation laws, unemployment insurance, old age pensions, or other
     social security or retirement benefits, or similar legislation;

                                       29
<PAGE>
 
          (d)  Utility easements, building restrictions and such other
     encumbrances or charges against real property as are of a nature generally
     existing with respect to properties of a similar character and which do not
     in any material way adversely affect the marketability of the same or
     interfere with the use thereof in the business of any Borrower;

          (e)  Capitalized Leases, whether currently existing or hereafter
     created, under which the Capitalized Lease Obligations do not exceed in the
     aggregate (i) $56,250,000 in 1998, (ii) $90,000,000 in 1999, (iii)
     $100,000,000 in 2000, and (iv) $150,000,000 thereafter; and

          (f)  All other Liens securing Indebtedness (other than Capitalized
     Lease Obligations) which does not exceed in the aggregate (i) $30,000,000
     in 1998, (ii) $45,000,000 in 1999, (iii) $60,000,000 in 2000, and (iv)
     $90,000,000 thereafter.

     SECTION 6.12.  Affiliates.  No Borrower shall enter into any transaction
(including, without limitation, the purchase or sale of any Property or service)
with, or make any payment or transfer to, any other Affiliate (other than
another Borrower) except (a) pursuant to the agreements described in the
Prospectus included in Newco's registration statement declared effective by the
SEC on January 22, 1997, (b) where expressly permitted, or (c) in the Ordinary
Course of Business and pursuant to the reasonable requirements of such
Borrower's business and upon fair and reasonable terms no less favorable to such
Borrower than such Borrower would obtain in a comparable arms-length
transaction.

     SECTION 6.13.  Environmental Matters. Each Borrower shall (a) at all times
materially comply with all applicable Environmental Laws and (b) take any and
all remedial actions as are required by Environmental Laws in response to the
Release of any Hazardous Materials on, under or about any real property owned,
leased or operated by such Borrower. In the event that a Borrower undertakes any
remedial action with respect to any Hazardous Material on, under or about any
real property, such Borrower shall conduct and complete such remedial action in
compliance with all applicable Environmental Laws, except when such Borrower's
liability for such Release of any Hazardous Material is being contested in good
faith by such Borrower and appropriate reserves therefor have been established.
If Sprint at any time has a reasonable basis to believe that there may be a
material violation of any Environmental Law by any Borrower, a Release of a
material amount of Hazardous Materials on any real property owned, leased or
operated by a Borrower or a Release of a material amount of Hazardous Materials
from such real property onto real property adjacent to such real property, then
the Borrowers shall, upon the request of Sprint, provide Sprint with all such
reports, certificates, engineering studies and other written material or data
relating thereto as Sprint may reasonably require which shall be maintained as
confidential by Sprint to the fullest extent authorized by law.

     SECTION 6.14.  Change in Corporate Structure; Fiscal Year.  No Borrower
shall (a) permit any amendment or modification to be made to its certificate of
incorporation or bylaws which is adverse to the interests of Sprint or (b)
subject to Sprint's consent (which consent shall not be 

                                       30
<PAGE>
 
unreasonably withheld), change its Fiscal Year to end on any date other than
December 31 of each year.

     SECTION 6.15.  Inconsistent Agreements.  No Borrower shall enter into any
indenture, agreement, instrument or other arrangement which contains any
provision which would be violated or breached by the making of Advances or by
the performance by any Borrower of any of such Borrower's obligations under any
Loan Document, the Investment Agreement or any Ancillary Agreement.

     SECTION 6.16.  Indebtedness.  Newco shall not permit its consolidated
Indebtedness as of any date during a Fiscal Year identified below (including the
aggregate of Capitalized Lease Obligations and other Indebtedness secured by
Liens limited by Section 6.11(e) and (f)) to exceed the greater of (a) the
amount listed below opposite such Fiscal Year and (b) four and one-half (4 1/2)
times EBITDA for the latest period of four (4) fiscal quarters ended prior to
the date of determination:

<TABLE>
<CAPTION>
               DURING FISCAL YEAR       AMOUNT      
               ------------------       ------      
               <S>                   <C>            
                    1998             $ 75,000,000   
                    1999              150,000,000   
                    2000              200,000,000   
               2001 and beyond        300,000,000    
</TABLE>

As used herein, "EBITDA" means Net Income for a specified period, plus the sum
of the amounts equal to the interest expense, the provision for taxes based on
income and the depreciation and amortization expense deducted in determining
such Net Income.

     SECTION 6.17.  ERISA Compliance. With respect to any Plan, no Borrower
shall:

          (a)  engage in any "prohibited transaction" (as such term is defined
     in Section 406 of ERISA or Section 4975 of the IRC) for which a civil
     penalty pursuant to Section 502(i) of ERISA or a tax pursuant to Section
     4975 of the IRC in excess of $1,000,000 is imposed;

          (b)  incur any "accumulated funding deficiency" (as such term is
     defined in Section 302 of ERISA) in excess of $1,000,000, whether or not
     waived, or permit any Unfunded Liability in excess of $1,000,000, to exist
     for more than 30 days after learning thereof;

          (c)  permit the occurrence of any Termination Event which results in a
     liability to a Borrower or any other member of the Controlled Group in
     excess of $1,000,000;

                                       31
<PAGE>
 
          (d)  fail to make any contribution or payment to any Multiemployer
     Plan which either Borrower or any other member of the Controlled Group is
     required to make under any agreement relating to such Multiemployer Plan or
     Title IV of ERISA which results in a liability in excess of $1,000,000; or

          (e)  permit the establishment or amendment of any Plan or fail to
     comply with the applicable provisions of ERISA and the IRC with respect to
     any Plan which would result in liability to a Borrower or any other member
     of the Controlled Group which, individually or in the aggregate, would have
     a Material Adverse Effect.


                                  ARTICLE VII

                               EVENTS OF DEFAULT

     The occurrence of any one or more of the following events shall constitute
an Event of Default:

     SECTION 7.01.  Any representations or warranties of the Borrowers made or
deemed made by or on behalf of a Borrower to Sprint under or in connection with
this Agreement, or in any certificate or information delivered in connection
with this Agreement or any other Loan Document are not true and correct (i) as
of the date referred to in such representations or warranties that addresses a
matter as of a particular date and (ii) as to all other representations and
warranties as of the date of such representation or warranty, except in either
the case of clause (i) or (ii), if the inaccuracy of such representations and
warranties would not in the aggregate have a Material Adverse Effect.

     SECTION 7.02.  Nonpayment of (a) principal of any Note within fourteen (14)
days after the same becomes  due, or (b) interest upon a Note or obligations
under any of the Loan Documents within fourteen (14) days after the same becomes
due.

     SECTION 7.03.  The breach by a Borrower of any of the terms or provisions
of Sections 6.02, 6.14, 6.15 or 6.16.
   -------------  ----  ----    ---- 

     SECTION 7.04.  The breach by a Borrower (other than a breach which
constitutes a Default under Section 7.01, 7.02 or 7.03) of any of the terms or
                            ------------  ----    ----                        
provisions of this Agreement, Sections 5.07 or 5.08 of the Investment Agreement,
or Articles II, III or IV of the Governance Agreement, or any material breach by
a Borrower of any terms or provisions of the Registration Rights Agreement (as
defined in the Investment Agreement), in any such case, which is not remedied
within forty-five (45) days after written notice to Newco from Sprint; provided,
however, such forty-five (45) day period shall be reduced to a fifteen (15) day
period for any breach under Section 6.10 or Section 6.12.
                            ------------    ------------ 

                                       32
<PAGE>
 
     SECTION 7.05.  The default by a Borrower in the performance of any term,
provision or condition contained in any agreement or agreements under which any
Indebtedness aggregating in excess of $5,000,000 was created or is governed, or
the occurrence of any other event or existence of any other condition, the
effect of any of which is to cause, or to permit the holder or holders of such
Indebtedness to cause, such Indebtedness to become due prior to its stated
maturity; or any such Indebtedness of a Borrower shall be declared to be due and
payable or required to be prepaid (other than by a regularly scheduled payment)
prior to the stated maturity thereof.

     SECTION 7.06.  A Borrower shall (a) have an order for relief entered with
respect to it under the Federal bankruptcy laws as now or hereafter in effect,
(b) make an assignment for the benefit of creditors, (c) apply for, seek,
consent to, or acquiesce in, the appointment of a receiver, custodian, trustee,
examiner, liquidator or similar official for it or any Substantial Portion of
its Property, (d) institute any proceeding seeking an order for relief under the
Federal bankruptcy laws as now or hereafter in effect or seeking to adjudicate
it a bankrupt or insolvent, or seeking dissolution, winding up, liquidation,
reorganization, arrangement, adjustment or composition of it or its debts under
any law relating to bankruptcy, insolvency or reorganization or relief of
debtors, (e) take any corporate action to authorize or effect any of the
foregoing actions set forth in this Section 7.06, (f) fail to contest in good
                                    ------------                             
faith any appointment or proceeding described in Section 7.07 or (g) become
                                                 ------------              
unable to pay, not pay, or admit in writing its inability to pay, its debts
generally as they become due.

     SECTION 7.07.  Without the application, approval or consent of a Borrower,
a receiver, trustee, examiner, liquidator or similar official shall be appointed
for a Borrower or any Substantial Portion of its Property, or a proceeding
described in Section 7.06(d) shall be instituted against a Borrower, and such
             ---------------                                                 
appointment continues undischarged or such proceeding continues undismissed or
unstayed for a period of ninety (90) consecutive days.

     SECTION 7.08.  Any court, government or governmental agency shall condemn,
seize or otherwise appropriate, or take custody or control of (each a
"Condemnation"), all or any portion of the Property of a Borrower which, when
 ------------                                                                
taken together with all other Property of the Borrowers so condemned, seized,
appropriated, or taken custody or control of, during the twelve-month period
ending with the month in which any such Condemnation occurs, constitutes a
Substantial Portion.

     SECTION 7.09.  A Borrower shall fail within thirty (30) days to pay, bond
or otherwise discharge any judgments or orders for the payment of money in an
aggregate amount in excess of $1,000,000, which are not stayed on appeal or
otherwise being appropriately contested in good faith.


                                 ARTICLE VIII

                ACCELERATION, WAIVERS, AMENDMENTS AND REMEDIES

                                       33
<PAGE>
 
     If any Event of Default described in Section 7.06 or 7.07 occurs with
                                          ------------    ----            
respect to a Borrower, the obligations of Sprint to make Advances hereunder
shall automatically terminate and the Obligations shall immediately become due
and payable without any election or action on the part of Sprint.  If any other
Event of Default occurs, Sprint may terminate or suspend the obligations of
Sprint to make Advances hereunder, or declare the Obligations to be due and
payable, or both, whereupon the Obligations shall become immediately due and
payable, without presentment, demand, protest or notice of any kind, all of
which each of the Borrowers hereby expressly waives.

     Within ten (10) Business Days after acceleration of the maturity of the
Obligations or termination of the obligations of Sprint to make Advances
hereunder as a result of any Event of Default (other than any Event of Default
as described in Section 7.06 or 7.07 with respect to a Borrower) and before any
                ------------    ----                                           
judgment or decree for the payment of the Obligations due shall have been
obtained or entered, Sprint may (in its sole discretion), by notice to the
Borrowers, rescind and annul such acceleration and/or termination.


                                  ARTICLE IX

                                    SETOFF

     In addition to, and without limitation of, any rights of Sprint under
applicable law, if any Default or Event of Default or Business Combination
occurs, any and all deposits (including all account balances, whether
provisional or final and whether or not collected or available) and any other
Indebtedness at any time held or owing by Sprint or any Affiliate of Sprint to
or for the credit or account of any Borrower may be offset and applied toward
the payment of the Obligations owing to Sprint or such Affiliate of Sprint,
whether or not the Obligations, or any part hereof, shall then be due or have
matured; provided, however, the foregoing shall not apply to any Business
Combination unless at least ten days prior to such offset or applications,
Sprint has given notice to the Borrowers that a prepayment is being required
under Section 3.08(a).

                                       34
<PAGE>
 
                                   ARTICLE X

                       BENEFIT OF AGREEMENT; ASSIGNMENTS

     SECTION 10.01.  Successors and Assigns. The terms and provisions of the
Loan Documents shall be binding upon and inure to the benefit of the Borrowers
and Sprint and their respective successors and assigns, except that (a) the
Borrowers shall not have the right to assign any rights or obligations under the
Loan Documents, and (b) any assignment by Sprint must be made in compliance with
Section 10.02.  Any assignee or transferee of any Note agrees by acceptance
- -------------                                                              
thereof to be bound by all the terms and provisions of the Loan Documents.  Any
request, authority or consent of any Person, who at the time of making such
request or giving such authority or consent is the holder of the Note, shall be
conclusive and binding on any subsequent holder, transferee or assignee of such
Note or of any note or notes issued in exchange therefor.

     SECTION 10.02.  Assignments by Sprint.

          10.02.1.   Assignments of this Agreement and the Obligations
                     -------------------------------------------------
Thereunder.  An Assignment or transfer of this Agreement may be made without the
- ----------                                                                      
prior consent of the Borrowers (i) by Sprint to any of its Affiliates, provided
that any such assignment or transfer to such Affiliate shall not release Sprint
from the obligations of Sprint under this Agreement, or (ii) pursuant to any
merger or sale of substantially all of the assets or stock of Sprint or such
Affiliates (or any transaction having such effect) that is pursuant to an
agreement entered into after the Closing Date and pursuant to which in the case
of a purchase of substantially all of the assets or stock of Sprint or such
Affiliates, the party purchasing such assets or stock of Sprint or such
Affiliates assumes the obligations of Sprint under this Agreement.

          10.02.2.   Transfers of the Notes.  Sprint may in accordance with
                     ----------------------                                
applicable law and without the prior consent of the Borrowers, at any time,
transfer and assign all or part of the Notes to one or more Persons
("Transferees").  In the case of such an assignment or transfer, Sprint shall
surrender the Notes subject to such assignment to the Borrowers prior to the
transfer and assignment being effective and the Borrowers shall, simultaneously
with such surrender, reissue and deliver new Notes in the same aggregate
outstanding principal amount as the surrendered Note in the name of such holders
as requested by Sprint.  On or after the effective date of such transfer and
assignment, (a) each such Transferee shall acquire all of the rights of Sprint
in the Notes assigned to such Transferee, and (b) Sprint shall remain subject to
the Aggregate Commitment and Loans.

          10.02.3.   Administration.  As a condition to any transfer or
                     --------------                                    
assignment of the Notes pursuant to Section 10.02.2, each Transferee shall
appoint Sprint (or any other Person to whom this Agreement has been assigned in
accordance with Section 10.02.1 or with the consent of the Borrowers) (the
"Agent") to act as agent of such Transferee, provided that the Agent shall not
have a fiduciary relationship in respect of the Borrowers or any Transferee of
the Notes.  The Agent shall exclusively exercise such powers under this
Agreement as are specifically delegated to Sprint by the terms hereof, including
the right to receive notices, requests, waivers, instructions, information

                                       35
<PAGE>
 
regarding the Borrowers, consents and other documents which the Borrowers may be
required to deliver pursuant to this Agreement.  The Agent shall have no implied
duties to the Transferees, or any obligation to the Transferees to take any
action thereunder.

     SECTION 10.03.  Dissemination of Information. Each Borrower authorizes
Sprint to disclose to any Person to whom this Agreement is being assigned
pursuant to Section 10.02.1 or Transferees under Section 10.02.2 any and all
information in Sprint's possession concerning the creditworthiness of the
Borrowers, subject however, to Sprint obtaining an appropriate confidentiality
agreement respecting such information.


                                  ARTICLE XI

                                 MISCELLANEOUS

     SECTION 11.01.  Notices.  Unless otherwise provided herein, any notice,
request, waiver, instruction, consent or document or other communication
required or permitted to be given by this Agreement shall be effective only if
it is in writing and (a) delivered by hand or sent by certified mail, return
receipt requested, (b) if sent by a nationally-recognized overnight delivery
service with delivery confirmed, or (c) if telexed or telecopied, with receipt
confirmed as follows:

          The Borrowers:                3100 New York Drive
                                        Pasadena, California 91107
                                        Attn: President and CEO
                                        Telecopy No.: (626) 296-4161

          with a copy to:               Hunton & Williams
                                        NationsBank Plaza, Suite 4100
                                        600 Peachtree Street, N.E.
                                        Atlanta, Georgia  30308-2216
                                        Attn: Scott M. Hobby, Esq.
                                        Telecopy No.: (404) 888-4190

          Sprint:                       Sprint Corporation
                                        2330 Shawnee Mission Parkway
                                        Westwood, Kansas 66205
                                        Attn: Chief Financial Officer
                                        Telecopy No.: (913) 624-8426

          with a copy to:               Sprint Corporation
                                        2330 Shawnee Mission Parkway
                                        Westwood, Kansas 66205
                                        Attn: Senior Vice President and 
                                              Treasurer

                                       36
<PAGE>
 
                                        Telecopy No.: (913) 624-8426

          with additional copies to:    Sprint Corporation
                                        2330 Shawnee Mission Parkway
                                        Westwood, Kansas 66205
                                        Attn: Vice President and Assistant 
                                              Treasurer
                                        Telecopy No.: (913) 624-8252

                                        Sprint Corporation
                                        2330 Shawnee Mission Parkway
                                        Westwood, Kansas 66205
                                        Attn: Corporate Secretary
                                        Telecopy No.: (913) 624-8233
 
The Parties shall promptly notify each other of any change in their respective
addresses or facsimile numbers or of the Person or office to receive notices,
requests or other communications under this Section 11.01.  Notice shall be
                                            -------------                  
deemed to have been given as of the date when so personally delivered, when
actually delivered by the U.S. Postal Service at the proper address, the next
day when delivered during business hours to an overnight delivery service
properly addressed or when receipt of a telex or telecopy is confirmed, as the
case may be, unless the sending party has actual Knowledge that such notice was
not received by the intended recipient.

     SECTION 11.02.  Entire Agreement.  This Agreement together with all
Schedules and Exhibits hereto, embody the entire agreement and understanding of
the Parties in respect to the matters contemplated hereby and supersedes and
renders null and void all other prior agreements and understandings, written and
oral, with respect to the subject matters hereof, provided that this provision
                                                  --------                    
shall not abrogate any other written agreement between the Parties executed
simultaneously with this Agreement.  No Party shall be liable or bound to any
other Party in any manner by any promises, conditions, representations,
warranties, covenants, agreements and understandings, except as specifically set
forth herein or therein.

     SECTION 11.03.  Waiver.  Except as otherwise permitted in this Agreement,
the terms or conditions of this Agreement may not be waived unless set forth in
a writing signed by the Party entitled to the benefits thereof.  No waiver of
any of the provisions of this Agreement shall be deemed or shall constitute a
waiver of such provision at any time in the future or a waiver of any other
provision hereof.  The rights and remedies of the Parties are cumulative and not
alternative.  Except as otherwise provided in this Agreement, neither the
failure nor any delay by any Party in exercising any right, power or privilege
under this Agreement, or the documents referred to in this Agreement or therein
will operate as a waiver of such right, power or privilege, and no single or
partial exercise of any such right, power or privilege will preclude any other
or further exercise of such right, power or privilege or the exercise of any
other right, power or privilege.

                                       37
<PAGE>
 
     SECTION 11.04.  Governing Law.  This Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware, without regard
to conflict of laws principles.

     SECTION 11.05.  Severability.  If any term or provision of this Agreement
or the application thereof to either party or set of circumstances shall, in any
jurisdiction and to any extent, be finally held invalid or unenforceable, such
term or provision shall only be ineffective as to such jurisdiction, and only to
the extent of such invalidity or unenforceability, without invalidating or
rendering unenforceable any other terms or provisions of this Agreement or under
any other circumstances, and the parties shall negotiate in good faith a
substitute provision which comes as close as possible to the invalidated or
unenforceable term or provision, and which puts each party in a position as
nearly comparable as possible to the position it would have been in but for the
finding of invalidity or unenforceability, while remaining valid and
enforceable.

     SECTION 11.06.  Counterparts.  This Agreement may be executed in one or
more counterparts each of which when so executed and delivered shall for all
purposes be deemed to be an original but all of which, when taken together,
shall constitute one and the same Agreement.

     SECTION 11.07.  Headings.  The table of contents, captions and headings
used in this Agreement are inserted for convenience only and shall not be deemed
to constitute part of this Agreement or to affect the construction or
interpretation hereof.

     SECTION 11.08.  No Third-Party Beneficiaries.  Nothing in this Agreement,
express or implied, shall create or confer upon any Person (including but not
limited to any employees), other than the Parties or their respective successors
and permitted assigns, any legal or equitable rights, remedies, obligations,
liabilities or claims under or with respect to this Agreement, except as
expressly provided herein.

     SECTION 11.09.  Interpretation.  (a)  Unless specifically stated otherwise,
references to Articles, Sections, Exhibits and Schedules refer to Articles,
Sections, Exhibits and Schedules in this Agreement.  References to "includes"
and "including" mean "includes without limitation" and "including without
limitation."  Whenever the context may require, any pronoun shall include the
corresponding masculine feminine and neuter forms.  Unless the context shall
otherwise require or provide, any reference to any agreement or other instrument
or statute or regulation is to such agreement, instrument statute or regulation
as amended and supplemented from time to time (and, in the case of a statute or
regulation, to any successor provision).

     (b)  Each Party is a sophisticated legal entity that was advised by
experienced counsel and, to the extent it deemed necessary, other advisors in
connection with this Agreement.  Accordingly, each Party hereby acknowledges
that no Party has relied or will rely in respect of this Agreement or the
transactions contemplated hereby upon any document or written or oral
information previously furnished to or discovered by it or its representatives,
other than this Agreement or the documents and instruments delivered at the
Closing.

                                       38
<PAGE>
 
     (c)  No provision of this Agreement shall be interpreted in favor of, or
against, any of the Parties by reason of the extent to which any such Party or
its counsel participated in the drafting thereof or by reason of the extent to
which any such provision is inconsistent with any prior draft hereof or thereof.

     SECTION 11.10.  Inclusion of Information in Schedules.  The inclusion of
any information in any Schedule (i) shall not be deemed an admission that any
such information is material for purposes of the representation and warranty to
which it relates or any other representation and warranty or for any other
purpose related to this Agreement or the transactions contemplated hereby,
including for purposes of any covenants, closing conditions or any other
remedies the Parties may have, and (ii) shall not be used or interpreted in any
manner to create a standard of materiality for any such purpose.

     SECTION 11.11.  Amendment.  No amendment, modification or alteration of the
terms or provisions of this Agreement, including any Schedules and Exhibits
hereto or thereto, shall be binding unless the same shall be in writing and duly
executed by the Party against whom such amendment, modification or alteration is
sought to be enforced.

     SECTION 11.12.  Joint and Several Obligations of Borrowers.  Each and
every agreement and obligation of Newco or any Borrower under this Agreement,
any Note or any other Loan Document shall be the joint and several obligation of
each Borrower.

     SECTION 11.13.  Effectiveness of Agreement.  This Agreement shall become
effective at the Closing, provided that this Agreement shall terminate upon the
termination of the Investment Agreement pursuant to Section 6.01(a) thereof.
                                                    ---------------         

     SECTION 11.14.  Reliance on Investment Agreement.  The Borrowers recognize
and acknowledge that in entering into this Agreement Sprint is relying on each
and every representation and warranty made by the Borrowers to Sprint in the
Investment Agreement as of the Closing.

     SECTION  11.15.  EXCLUSIVE JURISDICTION AND CONSENT TO SERVICE OF PROCESS.
THE PARTIES AGREE THAT ANY ACTION ARISING OUT OF OR RELATING TO THIS AGREEMENT,
THE NOTES, THE LOAN DOCUMENTS OR THE TRANSACTIONS CONTEMPLATED HEREBY SHALL BE
INSTITUTED IN A FEDERAL COURT SITTING IN DELAWARE OR STATE COURT SITTING IN
DELAWARE, WHICH SHALL BE THE EXCLUSIVE VENUE OF ANY SUCH ACTION.  EACH PARTY
WAIVES ANY OBJECTION WHICH SUCH PARTY MAY NOW OR HEREAFTER HAVE TO THE LAYING OF
VENUE OF ANY SUCH ACTION, AND IRREVOCABLY CONSENTS AND SUBMITS TO THE
JURISDICTION OF ANY SUCH COURT (AND THE APPROPRIATE APPELLATE COURTS) IN ANY
SUCH ACTION.  ANY AND ALL SERVICE OF PROCESS AND ANY OTHER NOTICE IN ANY SUCH
ACTION SHALL BE EFFECTIVE AGAINST SUCH PARTY WHEN TRANSMITTED IN ACCORDANCE WITH
SECTION 11.01. NOTHING CONTAINED HEREIN SHALL BE DEEMED TO AFFECT 
- -------------                                                                 

                                       39
<PAGE>
 
THE RIGHT OF ANY PARTY TO SERVE PROCESS IN ANY MANNER PERMITTED BY LAW.

              [THE BALANCE OF THIS PAGE LEFT BLANK INTENTIONALLY]

                                       40
<PAGE>
 
     SECTION 11.16. WAIVER OF JURY TRIAL. THE BORROWERS AND SPRINT HEREBY WAIVE
TRIAL BY JURY IN ANY JUDICIAL PROCEEDING INVOLVING, DIRECTLY OR INDIRECTLY, ANY
MATTER (WHETHER SOUNDING IN TORT, CONTRACT OR OTHERWISE), INCLUDING ANY CLAIM,
COUNTERCLAIM, CROSS-CLAIM, DEFENSE, OR AFFIRMATIVE DEFENSE, IN ANY WAY ARISING
OUT OF, RELATED TO, OR CONNECTED WITH ANY LOAN DOCUMENT OR THE RELATIONSHIP
ESTABLISHED THEREUNDER.

THIS IS THE FINAL EXPRESSION OF THE CREDIT AGREEMENT BETWEEN THE BORROWERS, AS
DEBTORS, AND SPRINT, AS LENDER. THIS CREDIT AGREEMENT MAY NOT BE CONTRADICTED BY
EVIDENCE OF ANY PRIOR ORAL CREDIT AGREEMENT OR OF A CONTEMPORANEOUS ORAL CREDIT
AGREEMENT BETWEEN THE PARTIES.

Newco:                                   Sprint:    THS
      ------------                              ------------
     Initials                                      Initials

The Company:            
             -----------
     Initials

          IN WITNESS WHEREOF, Newco, the Company and Sprint have executed this
Agreement as of the date first above written.

                              DOLPHIN, INC.


                              By: /s/ Charles G. Betty
                                 ---------------------------------------
                              Print Name: Charles G. Betty
                                         -------------------------------
                              Title: President & CEO 
                                    ------------------------------------

                              EARTHLINK NETWORK, INC.


                              By: /s/ Charles G. Betty
                                 ---------------------------------------
                              Print Name: Charles G. Betty
                                         -------------------------------
                              Title: President & CEO 
                                    ------------------------------------
 
                              SPRINT CORPORATION


                              By: /s/ Theodore H. Schell
                                 ---------------------------------------
                              Print Name: Theodore H. Schell
                                         -------------------------------
                              Title: Vice President - Strategic Planning
                                    ------------------------------------
                                     and Corporate Development

                      SIGNATURE PAGE FOR CREDIT AGREEMENT
<PAGE>
 
                                                                       EXHIBIT A
                                                                       ---------


THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
(THE "ACT"), AND MAY NOT BE OFFERED OR SOLD UNLESS REGISTERED PURSUANT TO THE
PROVISIONS OF SUCH ACT OR AN EXEMPTION FROM REGISTRATION THEREFROM IS AVAILABLE.
NEWCO SHALL NOT BE REQUIRED TO ISSUE ANY CERTIFICATES TO ANY PERSON UPON
CONVERSION OF THIS NOTE OTHER THAN TO THE HOLDER OF SUCH CONVERTED NOTE UNLESS
NEWCO HAS OBTAINED REASONABLE ASSURANCE THAT SUCH TRANSACTION IS EXEMPT FROM THE
REGISTRATION REQUIREMENTS OF, OR IS COVERED BY AN EFFECTIVE REGISTRATION
STATEMENT UNDER, THE ACT AND ALL APPLICABLE STATE SECURITIES LAWS, INCLUDING, IF
NECESSARY IN THE REASONABLE JUDGMENT OF NEWCO OR ITS LEGAL COUNSEL, RECEIPT OF
AN OPINION TO SUCH EFFECT FROM COUNSEL SATISFACTORY TO NEWCO IN ITS REASONABLE
JUDGMENT.


                         THE UNDERSIGNED BORROWERS ACKNOWLEDGE RECEIPT OF A COPY
                         OF THIS PROMISSORY NOTE


                      CONVERTIBLE SENIOR PROMISSORY NOTE
                      ----------------------------------


                                    ____________________, ______________________
                                    (City)                   (State)

$_________________                                              [Borrowing Date]


     FOR VALUE RECEIVED, the undersigned, Dolphin, Inc., a Delaware corporation
and EarthLink Network, Inc., a Delaware corporation, jointly and severally as 
co-makers of this Note, (collectively the "Borrowers"), hereby promise to pay to
the order of Sprint Corporation, a Kansas corporation ("Lender"), its successors
and assigns (each a "Holder"), at its office designated below or at such other
place as the Holder hereof may, from time to time, designate in writing, the
following designated principal and interest in the manner set forth below:
<PAGE>
 
     PRINCIPAL: The principal sum of $___________________________________. Such
amount constitutes an Advance under the Credit Agreement (as hereinafter
defined).

     INTEREST on the principal shall be payable from the date hereof to and
including the date of maturity at a rate equal to SIX PERCENT (6 %) per annum;
provided, however, such interest rate may be increased as provided in the Credit
Agreement under certain circumstances to a floating rate equal to five percent
(5%) per annum above the Prime Rate.

     Interest shall be computed on the basis of the actual number of elapsed
days and a 360-day year.

     PRINCIPAL AND INTEREST shall be payable as follows:

     PRINCIPAL: Shall be payable five (5) years after the date of this Note.

     INTEREST: Shall be payable quarterly on the fifteenth day of January,
April, July and October of each year commencing on the first such day occurring
after the date of this Note and upon any prepayment or conversion hereunder
until such time as all amounts of principal under this Note are paid in full.

          If any Payment Date for this Note is not a Business Day (as defined in
the Credit Agreement), payment shall be made on the next successive Business Day
and interest shall be payable thereon at the rate herein specified during such
extension.

          Nothing in this Note shall be construed as an express or implied
agreement by Lender to forbear in the collection of any amount owing hereunder,
or be construed as in any way giving Borrowers the right, express or implied, to
fail to make timely payment hereunder.

     PLACE OF PAYMENT: All payments of principal and interest shall be made in
lawful currency of the United States of America in immediately available funds
to Lender to an account designated by instructions from Lender or at such other
place as the Holder hereof may from time to time, designate in writing.

     DEFINITIONS: The following terms shall have the following meanings herein:

     "Credit Agreement" means the Credit Agreement, dated as of ______________,
1998, between Lender and Borrowers.

     Capitalized terms not otherwise defined herein shall have the meanings
ascribed to them in the Credit Agreement.

     CREDIT AGREEMENT: This Note is issued subject to the provisions of the
Credit Agreement and each and every provision of the Credit Agreement is hereby
incorporated into this

                                      A-2
<PAGE>
 
Note by reference notwithstanding the termination of the Credit Agreement. Each
Holder of this Note, by accepting the same, agrees to and shall be bound by such
provisions.

     SET-OFF: Lender may exercise its right of set off in accordance with
Article IX of the Credit Agreement.
- ----------

     CONVERSION: The Conversion Price of this Note is $___________. This Note is
subject to the Conversion Rights set forth in the Credit Agreement.

     In the event of conversion of this Note in part only, the unpaid portion of
interest accrued on the part of the Note converted shall be prepaid as of the
date of such conversion and a New Note evidencing the remaining principal
balance of this Note shall be issued in the name of the Holder hereof upon the
cancellation hereof.

     PREPAYMENT: This Note is subject to optional and mandatory prepayment, all
as provided in the Credit Agreement.

     DEFAULT AND ACCELERATION: Upon the occurrence of an Event of Default,
Lender may, at its option, declare the entire unpaid balance of principal of and
interest on this Note, as well as the unpaid principal of and interest on any
other indebtedness or liability of Borrowers to Lender, immediately due and
payable without notice or demand. In addition to Lender's right of set-off as
provided above, Lender shall have, upon the occurrence of any Event of Default,
and at any time thereafter, the remedies provided for in the Credit Agreement
and any other document, agreement or instrument evidencing or otherwise relating
to this Note.

     PURPOSE OF LOAN: Borrowers hereby warrant and represent that the proceeds
of this loan will be used solely for business purposes of Borrowers and as set
forth in the Credit Agreement.

     MISCELLANEOUS TERMS: Demand, presentment, protest and notice of nonpayment
and dishonor of this Note are hereby waived.

     Unless otherwise agreed, all payments made by Borrowers to Lender in
connection with the indebtedness evidenced by this Note shall be applied first
toward all amounts owed to Lender for payment of attorneys' fees and costs of
collection, if any, next toward payment of accrued interest and finally toward
principal. If any Event of Default has occurred and is continuing, any and all
sums received from or for the account of Borrowers shall be applied to any
Indebtedness of any kind owed by Borrowers to Lender, whether evidenced by this
Note or otherwise, in such order as Lender may elect.

     Each Borrower agrees that Lender may, at its option, assign all or a part
of, the obligation evidenced hereby to such parties as Lender shall determine in
its sole discretion, subject to the provisions of the Credit Agreement.

                                      A-3
<PAGE>
 
     No delay or omission on the part of Lender in exercising any right or
remedy hereunder shall operate as a waiver of such right or remedy. A waiver on
any one occasion shall not be construed as a bar to or waiver of any such right
and/or remedy on any future occasion.

     Notwithstanding anything to the contrary herein, the interest rate hereon
shall not exceed the maximum rate, if any, permitted by applicable law to be
contracted by Borrowers for the purposes set forth herein.

     This Note shall be governed by and construed and enforced in accordance
with the laws of the State of Delaware.

     Borrowers will pay on demand, to the extent permitted by applicable law,
all costs of collection, including attorneys fees actually incurred or paid by
Lender in enforcing this Note.

     If any provision or clause of this Note shall be held or deemed to be or
shall, in fact, be inoperative, invalid or unenforceable as applied in any
particular case or in all cases because it conflicts with any provisions of any
constitution or statute or rule of public policy, or for any other reason, such
determination shall not affect in any way any other provision or clause herein
which can be given effect without the inoperative, invalid or unenforceable
provision or clause.

     EXCLUSIVE JURISDICTION AND CONSENT TO SERVICE OF PROCESS.  THE PARTIES
     --------------------------------------------------------              
AGREE THAT ANY ACTION ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE
TRANSACTIONS CONTEMPLATED HEREBY SHALL BE INSTITUTED IN A FEDERAL COURT SITTING
IN DELAWARE OR STATE COURT SITTING IN DELAWARE, WHICH SHALL BE THE EXCLUSIVE
VENUE OF ANY SUCH ACTION. EACH PARTY WAIVES ANY OBJECTION WHICH SUCH PARTY MAY
NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY SUCH ACTION, AND IRREVOCABLY
CONSENTS AND SUBMITS TO THE JURISDICTION OF ANY SUCH COURT (AND THE APPROPRIATE
APPELLATE COURTS) IN ANY SUCH ACTION. ANY AND ALL SERVICE OF PROCESS AND ANY
OTHER NOTICE IN ANY SUCH ACTION SHALL BE EFFECTIVE AGAINST SUCH PARTY WHEN
TRANSMITTED IN ACCORDANCE WITH SECTION 11.01.  NOTHING CONTAINED HEREIN SHALL BE
                               -------------                                    
DEEMED TO AFFECT THE RIGHT OF ANY PARTY TO SERVE PROCESS IN ANY MANNER PERMITTED
BY LAW.


DOLPHIN, INC.


By_________________________________
Printed Name:______________________
Title______________________________
<PAGE>
 
EARTHLINK NETWORK, INC.


By________________________________
Printed Name:_____________________
Title_____________________________

   [Any additional Borrowers at the Borrowing Date shall also sign the Note]
<PAGE>
 
                                                                       EXHIBIT B
                                                                       ---------


                           AGREEMENT TO ADD BORROWER
                           -------------------------

     THIS AGREEMENT made and entered into this ______ day of ______, _____ by
and between ______________, a ______________ ("Subsidiary") and Sprint
Corporation, a Kansas corporation ("Sprint").

     WHEREAS, Sprint, as lender, and Dolphin, Inc. and EarthLink Network, Inc.,
as borrowers, have entered into a Credit Agreement, dated February __, 1998 (the
"Credit Agreement"); and

     WHEREAS, it is anticipated that Subsidiary will become a "Subsidiary" (as
that term is defined in the Credit Agreement) of a Borrower under the Credit
Agreement; and

     WHEREAS, Subsidiary recognizes and acknowledges that the Credit Agreement,
the Investment Agreement and the Ancillary Agreements, including Advances
heretofore and hereafter made to the Borrowers under the Credit Agreement, serve
to benefit, directly or indirectly, Subsidiary; and

     WHEREAS, the Credit Agreement requires that prior to a Person becoming a
Subsidiary, such Person shall enter into this Agreement.

     NOW, THEREFORE, the parties hereto hereby agrees as follows:

     1.   All capitalized terms appearing herein and not otherwise defined shall
have the meaning attributed to them in the Credit Agreement.

     2.   Sprint hereby agrees that upon the Subsidiary becoming a Subsidiary
(as defined in the Credit Agreement) of a Borrower, the Subsidiary shall be and
become a "Borrower" under the Credit Agreement with all of the rights and
obligations of a Borrower thereunder.

     3.   In consideration of Sprint's Agreement set forth in paragraph 2 above,
Subsidiary hereby agrees to be bound by all of the terms and conditions of the
Credit Agreement as a "Borrower" thereunder and hereby joins all other Borrowers
therein in making, jointly and severally with each other Borrower, each and
every agreement, warranty and representation made therein by the Borrowers
thereunder, including, without limitation, the joint and several obligation of
the Borrower to pay all Obligations (including those in existence prior to the
date hereof) when the same are due, whether at maturity, by acceleration,
mandatory prepayment or otherwise.

                                      B-1
<PAGE>
 
     4.   Subsidiary agrees that at the request of Sprint, it will execute all
Convertible Senior Promissory Notes outstanding prior to the date hereof as an
additional Borrower, joint obligor and co-maker of each such Note.

     5.   The Credit Agreement is not otherwise amended and shall continue in
full force and effect.

     IN WITNESS WHEREOF, the undersigned have entered into this Agreement as of
the day and year first above written.


SPRINT CORPORATION                              ________________________________


By:________________________________             By:_____________________________

                    ("Sprint")                                    ("Subsidiary")


     The undersigned being all of the Borrowers under the above-mentioned Credit
Agreement hereby consent and agree to the foregoing Agreement to Add Borrowers.

Dated ___________, ______


DOLPHIN, INC.                       EARTHLINK NETWORK, INC.


By:________________________________             By:_____________________________

                     ("Newco")                                   ("The Company")


[The above is to be agreed to by all other Borrowers that exist at the time the
above Agreement is entered into.]
<PAGE>
 
                                                                       EXHIBIT C
                                                                       ---------


                            COMPLIANCE CERTIFICATE
                            ----------------------

     This Compliance Certificate is furnished to Sprint Corporation ("Lender")
pursuant to that certain Credit Agreement dated as of ____________, 1998, by and
among Lender and Dolphin, Inc. (the "Newco") and EarthLink Network, Inc.
(collectively, with those Persons added as a party to the Credit Agreement
pursuant to Section 6.02 thereof, the "Borrowers").  Unless otherwise defined
            ------------                                                     
herein, the terms used in this Compliance Certificate have the meanings ascribed
to thereto in the Credit Agreement.

     THE UNDERSIGNED HEREBY CERTIFIES THAT:

     1.   I am the duly appointed chief financial officer of Newco;

     2.   I have reviewed the terms of the Credit Agreement and I have made, or
have caused to be made under my supervision, a detailed review of the
transactions and conditions of each of the Borrowers during the accounting
period covered by the attached financial statements;

     3.   The examinations described in paragraph 2 did not disclose, and I have
no knowledge of, the existence of any condition or occurrence of any event which
constitutes a Default or Event of Default during or at the end of the accounting
period covered by the attached financial statements or as of the date of this
Certificate, except as set forth below;

     4.   No Business Combination has occurred as of the date of this
Certificate;

     5.   The financial statements required by Section 6.01 of the Credit
                                               ------------              
Agreement and being furnished to you concurrently with this Certificate are
true, correct and complete as of the date and for the periods covered thereby;
and

     6.   The Attachment hereto sets forth the financial data and computations
evidencing Newco's compliance with Section 6.11(e) and (f) and Section 6.16 of
                                   -----------------------     ------------   
the Credit Agreement, which data and computations are, to the best of my
knowledge, true, correct and complete and have been made in accordance with
Section 6.11(e) and (f) and Section 6.16 of the Credit Agreement.
- -----------------------     ------------                         

     Described below are the exceptions, if any, to paragraph 3 by listing, in
detail, the nature of the condition or event, the period during which it has
existed and the action which the relevant Borrower has taken, is taking, or
proposes to take with respect to each such condition or event:

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

                                     C-1 
<PAGE>
 
     The foregoing certifications, together with the computations set forth in
the Attachment hereto and the financial statements delivered with this
Certificate in support hereof, are made and delivered this ____________ day of
________________ __________.


_____________________________________
Chief Financial Officer for Newco
<PAGE>
 
                     ATTACHMENT TO COMPLIANCE CERTIFICATE

                 Compliance Calculations for Credit Agreement

                    Calculations as of ___________________

________________________________________________________________________________

<TABLE>
<CAPTION>
INDEBTEDNESS (SECTION 6.16)
<S>        <C>                         <C>          
 
     1.    Indebtedness (as defined)   $__________________
 
     2.    EBITDA (as defined)         $__________________
 
     3.    4 1/2 times Line 2          $__________________
 
     4.    Fiscal Year                     Amount
           -----------                     -------                             
  
           1998                              $ 75,000,000
           1999                              150,000.000
           2000                              200,000,000
           2001 and beyond                   300,000,000
 </TABLE> 
     5.   As listed in Section 6.16 for the Fiscal years indicated,
          Indebtedness shall not exceed the greater of Line 3 above
          or the amount indicated in Line 4 above adjacent to the
          appropriate Fiscal year.
 
     6.   Newco is in compliance?
          (Circle yes or no)                              Yes / No
                                                          --------
 
CAPITALIZED LEASE OBLIGATIONS AND OTHER INDEBTEDNESS SECURED BY LIENS (SECTIONS
6.11(e) AND (f))
 
     1.   Capitalized Lease Obligations (as defined)          $_____________
     2.   Other Indebtedness (as defined) secured by Liens 
         (as defined)                                         $_____________
     
 
<TABLE> 
<CAPTION> 
                                   Capitalized                 Other
                                      Lease                 Indebtedness
     3.   Fiscal Year              Obligations            Secured by Liens
                                   -----------            ---------------- 
     <S>                           <C>                    <C>   
            1998                      $ 56,250,000             $30,000,000
            1999                        90,000,000             45,000,000
            2000                        100,000,000            60,000,000
            2001 and beyond             150,000,000            90,000,000
</TABLE>
<PAGE>
 
     4.   As set forth in Section 6.11(e) for the Fiscal years indicated,
                          ---------------                                
          Capitalized Lease Obligations shall not exceed the amount indicated in
          Line 3 above adjacent to the appropriate Fiscal year.

          Newco is in compliance?
          (Circle yes or no)                            Yes / No
                                                        --------

     5.   As set forth in Seciton 6.11(f) for the Fiscal years indicated, other
          Indebtedness secured by Liens shall not exceed the amount indicated in
          Line 3 above adjacent to the appropriate Fiscal year.

          Newco is in compliance?
          (Circle yes or no)                            Yes / No
                                                        --------
                                      C-4

<PAGE>
                                                            EXHIBIT NO. (C)(6)
 
                         REGISTRATION RIGHTS AGREEMENT

     THIS REGISTRATION RIGHTS AGREEMENT (the "Agreement"), dated as of February
10, 1998 (the "Effective Date"), is by and between Dolphin, Inc., a Delaware
corporation ("Newco"), Sprint Corporation, a Kansas corporation ("Sprint") and
Sprint Communications Company L.P., a Delaware limited partnership ("Sprint
L.P.").

     WHEREAS, the respective Boards of Directors of Sprint, the general partner
of Sprint L.P. and Newco have determined to enter into a strategic relationship
in the area of Internet access and related services and Sprint and Sprint L.P.
will make investments in EarthLink Network, Inc., a Delaware corporation (the
"Company"), and Newco in connection with the Merger (as defined below) of
Dolphin Sub, Inc., a Delaware corporation and wholly-owned subsidiary of Newco
("Newco Sub"), and the Company in order to enhance the capabilities for growth
and financial and strategic success;

     WHEREAS, Sprint, Sprint L.P., Newco, the Company, and Newco Sub have
entered into an Investment Agreement as of the date hereof (the "Investment
Agreement") contemplating that strategic alliance and addressing the terms and
conditions of such investment and related transactions;

     WHEREAS, Sprint proposes to make a tender offer (as it may be amended from
time to time as permitted under the Investment Agreement, with the Company's
consent if required thereby, the "Offer") to purchase 1,250,000 shares of common
stock, par value $.01 per share, of the Company (the "Common Stock"), for an
aggregate cash consideration of $56,250,000 and at a price per share of Common
Stock of $45 net to each seller in cash (such price, as may hereafter be
changed, the "Offer Price"), upon the terms and subject to the conditions set
forth in the Investment Agreement; and the Board of Directors of the Company has
approved the Offer and the other transactions contemplated by the Investment
Agreement and is recommending that the Company's stockholders who wish to
receive cash for their shares of the Common Stock accept the Offer;

     WHEREAS, immediately following the closing of the Offer, Sprint L.P.
proposes to purchase 4,102,941 shares of Series A Convertible Preferred Stock,
par value $.01 per share of Newco (the "Convertible Preferred Stock") in
exchange for (i) an aggregate cash consideration of $23,750,000, (ii) the
assignment to Newco of 100% of the Sprint Internet Passport Subscribers, and
(iii) entering into a network agreement whereby Newco and the Company will
utilize Sprint's long-distance network under specified terms and conditions;

     WHEREAS, Sprint, Sprint L.P., the Company and Newco will enter into a
marketing and distribution agreement whereby Newco and the Company will utilize
the Sprint brand under specified terms and conditions and will, inter alia, have
                                                                ----- ----      
the right to use Sprint L.P. distribution channels under specified terms and
conditions and agrees to sell certain Sprint L.P. products;

     WHEREAS, Sprint shall provide Newco and the Company, as co-borrowers, with
up to $25 million of Convertible Senior Debt financing on or after the Closing,
with such amount to 
<PAGE>
 
increase to up to $100 million over time (the "Convertible Debt Financing"),
such indebtedness to be evidenced by one or more Convertible Senior Promissory
Note(s) (the "Convertible Notes");

     WHEREAS, the closing of the acqisition of the Convertible Preferred Stock
and the other transactions referred to above other than the Offer shall take
place concurrently with the merger of Newco Sub into the Company (the "Merger")
and the conversion of each share of Common Stock into one share of Newco common
stock, par value $.01 per share (the "Newco Common Stock") pursuant to the
Merger, in each case upon the terms and subject to the conditions set forth in
the Investment Agreement and/or the Ancillary Agreements;

     WHEREAS, Sprint and Sprint L.P. may desire, from time to time, to sell to
the public shares of Common Stock acquired in the Offer or pursuant to the
Merger or which may be acquired upon exercise of the conversion rights
associated with the Convertible Preferred Stock and the Convertible Notes or
pursuant to the exercise of its rights under the Governance Agreement
(individually a "Convertible Security" and collectively the "Convertible
Securities");

     WHEREAS, Newco, Sprint and Sprint L.P. therefore deem it to be in their
respective best interests to set forth the rights of Sprint in connection with
public offerings and sales of Registrable Securities (as defined below and
hereinafter all references to Sprint shall refer collectively to Sprint and
Sprint L.P. inasmuch as Sprint shall cause all decisions by Sprint to bind both
of them);

     NOW, THEREFORE, in consideration of the representations, warranties,
covenants and agreements contained in this Agreement and in the Ancillary
Agreements, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Parties hereto hereby agree as
follows:


                                  ARTICLE 1.

                         DEFINITIONS AND CONSTRUCTION

     Section 1.1    Certain Definitions.  As used in this Agreement, the
                    -------------------                                 
following terms shall have the meanings specified below:

     "Affiliate" of a Person means any Person that, directly or indirectly,
      ---------                                                            
controls, is controlled by, or under common control with such Person.

     "Ancillary Agreement" shall have the meaning ascribed to that term in the
      -------------------                                                     
Investment Agreement, and shall also include for purposes of this Agreement, the
Investment Agreement.

     "Closing" shall have the meaning ascribed to that term in the Investment
      -------                                                                
Agreement.

     "Closing Date" shall have the meaning ascribed to that term in the
      ------------                                                     
Investment Agreement.

                                       2
<PAGE>
 
     "Closing Price" per share of Registrable Securities on any date shall mean
      -------------                                                            
the last sale price, regular way, or, in case no such sale takes place on such
day, the average of the closing bid and asked prices, regular way, in either
case as reported in the principal consolidated transaction reporting system with
respect to securities listed or admitted to trading on the New York Stock
Exchange or, if the Registrable Securities are not listed or admitted to trading
on the New York Stock Exchange, as reported in the principal consolidated
transaction reporting system with respect to securities listed on the principal
national securities exchange on which the Registrable Securities are listed or
admitted to trading or, if the Registrable Securities are not listed or admitted
to trading on any national securities exchange, if such shares of Registrable
Securities are not listed or admitted to trading on such exchange, as reported
on the Nasdaq National Market, or if not quoted on the Nasdaq National Market,
the last quoted sale price or, if not so quoted, the average of the high bid and
low asked prices in the over-the-counter market, as reported by Nasdaq or such
other system then in use, or, if on any such date the Registrable Securities are
not quoted by any such organization, the average of the closing bid and asked
prices as furnished by a professional market maker making a market in the
Registrable Securities selected by the Board of Directors. If the Registrable
Securities are not publicly held or so listed or publicly traded, "Closing
Price" shall mean the Fair Market Value per share as determined in good faith by
the Board of Directors of Newco.

     "Common Stock" shall mean (i) Common Stock as defined in the third Recital
      ------------                                                             
to this Agreement with respect to the time period prior to the Merger, (ii)
Newco Common Stock as defined in the sixth Recital to this Agreement with
respect to the time period after the Merger, and (iii) any other class of common
equity of Newco into which the shares defined in (i) and (ii) may hereafter have
been changed or reclassified.

     "Effective Date" shall have the meaning ascribed to that term in the
      --------------                                                     
introductory paragraph of this Agreement.
 
     "Exchange Act" means the Securities Exchange Act of 1934, as amended, and
      ------------                                                            
the rules and regulations promulgated thereunder as in effect at the time.

     "Governance Agreement" means the Governance Agreement, dated as of the
      --------------------                                                 
Effective Date, by and between Sprint, Sprint L.P., Newco and the Company.

     "Holder" means Sprint, so long as it holds any Registrable Securities, and
      ------                                                                   
any Person owning Registrable Securities who is a permitted transferee or
assignee of rights under Article 10 of this Agreement.

     "Party" means any Person that is a signatory to this Agreement.
      -----                                                         

     "Person" means any natural person, corporation, partnership, limited
      ------                                                             
liability company, trust, unincorporated organization or other entity.

                                       3
<PAGE>
 
     "Register" the terms "register," "registered," and "registration" refer to
      --------                                                                 
a registration effected by the preparation and filing of a Registration
Statement in compliance with the Securities Act, and the declaration or ordering
of effectiveness of such Registration Statement by the SEC.

     "Registrable Securities" means at any time: (i) the Registration Common
      ----------------------                                                
Shares then owned or held by the Holders, and (ii) the Registration Common
Shares then issuable upon conversion of any and all Convertible Securities then
owned or held by the Holders, and, in each case, all shares of Common Stock
issued as (or issuable upon the conversion or exercise of any warrant, right or
other security which is issued as) a dividend, stock split or other distribution
including as a result of any merger, consolidation or other reorganization
involving Newco with respect to, in exchange for, or in replacement of such
Registration Common Shares then owned or held by such Holder or Holders or
Registration Common Shares then issuable upon conversion of any and all
Convertible Securities then owned or held by the Holders, as the case may be,
including as a result of any merger, consolidation or other reorganization
involving Newco. The term "Registrable Securities" excludes, however, any
security (i) the sale of which has been effectively registered under the
Securities Act and which has been disposed of in accordance with a Registration
Statement, (ii) that has been sold by a Holder in a transaction exempt from the
registration and prospectus delivery requirements of the Securities Act under
Section 4(l) thereof (including transactions pursuant to Rules 144 and 144A)
such that the further disposition of such securities by the transferee or
assignee is not restricted under the Securities Act, (iii) that has been sold by
a Holder in a transaction in which such Holder's rights under this Agreement are
not, or cannot be, assigned, or (iv) for which the registration rights provided
under this Agreement have expired pursuant to Article 13 of this Agreement.

     "Registration Common Shares" shall mean all shares of Common Stock owned or
      --------------------------                                                
acquired by Sprint, Sprint L.P. or by any permitted assignee or transferee as of
the date hereof or any time subsequent thereto, including Common Stock acquired
in the Tender Offer, by exercise of any top up or other rights to purchase
Common Stock under the Governance Agreement, or otherwise.

     "Registration Expenses" means: (i) registration, qualification and filing
      ---------------------                                                   
fees; (ii) fees and expenses of compliance with securities or blue sky laws
(including reasonable fees and disbursements of counsel in connection with blue
sky qualifications or registration of any Registrable Securities being
registered under the Securities Act or any applicable state securities or blue
sky laws); (iii) printing expenses; (iv) fees and disbursements of counsel for
Newco and customary fees and expenses for independent certified public
accountants retained by Newco (including the expenses of any comfort letters or
costs associated with the delivery by independent certified public accountants
of comfort letters customarily requested by underwriters); and (v) fees and
expenses of listing any Registrable Securities on any securities exchange or
automated quotation system on which the Common Stock is then listed or quoted,
but in all events excluding the compensation of regular employees of Newco and
excluding underwriter's fees, discounts and commissions.

     "Registration Statement" means any registration statement or similar
      ----------------------                                             
document under the Securities Act or any successor thereto that covers any of
the Registrable Securities pursuant to the provisions of this Agreement,
including the prospectus or preliminary prospectus included therein, all
amendments and supplements to such Registration Statement, including post-
effective 

                                       4
<PAGE>
 
amendments, all exhibits to such Registration Statement and all material
incorporated by reference in such Registration Statement.

     "Rule 144" means Rule 144 promulgated under the Securities Act or any
      --------                                                            
successor rule thereto.

     "Rule 144A" mean Rule 144A promulgated under the Securities Act or any
      ---------                                                            
successor rule thereto.

     "SEC" means the Securities and Exchange Commission.
      ---                                               

     "Securities Act" means the Securities Act of 1933, as amended, and the
      --------------                                                       
rules and regulations promulgated thereunder as in effect at the time.

     Section 1.2.   Construction.  The definitions in Section 1.1 shall apply
                    ------------                                             
equally to both the singular and plural forms of the terms defined.  Whenever
the context may require, any pronoun shall include the corresponding masculine,
feminine and neuter forms.  The words "include," "includes," and "including"
shall be deemed to be followed by the phrase "without limitation."  All
references to Articles and Sections shall be deemed to be references to Articles
and Sections of this Agreement unless the context otherwise requires.  The
headings of the Articles and Sections are inserted for convenience of reference
only and are not intended to be a part of or to affect the meaning or
interpretation of this Agreement.  Unless the context otherwise requires or
provides, any reference to any agreement or other instrument or statute or
regulation is to such agreement, instrument, statute or regulation as amended
and supplemented from time to time (and, in the case of a statute or regulation,
to any successor provision).


                                  ARTICLE 2.

                              DEMAND REGISTRATION

                                       5
<PAGE>
 
     Section 2.1   If Newco shall receive a written request from Sprint, or if
Sprint is not a Holder at such time, from Holders who in the aggregate hold a
majority of the Registrable Securities (in either case, collectively, the
"Initiating Holders") that Newco file a Registration Statement under the
Securities Act covering the registration of any or all of such Holder's
Registrable Securities, then Newco shall (i) within 10 days of the receipt
thereof, give written notice of such request to all Holders of outstanding
Registrable Securities known to Newco and to any additional addressees provided
to Newco by any transferee of any Holder, and (ii) subject to the limitations
contained in this Article 2, as soon as practicable and in any event within 45
days of the receipt of such request, file the Registration Statement to effect
registration under the Securities Act covering all Registrable Securities for
which Newco receives a request from the Holders and transferees thereof within
30 days of the delivery of the notice by Newco as required in clause (i) above.
Newco, however, shall not be required to file a Registration Statement pursuant
to this Article 2 unless the aggregate number of Registrable Securities
requested to be registered is greater than 750,000 (as adjusted to reflect stock
splits, reverse stock splits, stock dividends and similar actions).

     Section 2.2   If an Initiating Holder intends to distribute the Registrable
Securities covered by its request by means of an underwriting, it shall so
advise Newco as a part of its request made pursuant to Section 2.1 and Newco
shall include such information in the written notice to the Holders referred to
in Section 2.1. In such event, the right of any Holder to include its
Registrable Securities in such registration shall be conditioned upon such
Holder's participation in the underwriting and the inclusion of such Holder's
Registrable Securities in the underwriting to the extent provided herein. All
Holders proposing to sell Registrable Securities through such underwriting
(together with Newco as provided in Section 4.1(ix) of this Agreement and any
other holder of shares of Common Stock permitted to participate in such
registration pursuant to this Section 2.2) shall enter into an underwriting
agreement in customary form with the underwriter or underwriters selected for
such underwriting by the Initiating Holder(s) (provided the same are
underwriters of recognized national standing, and provided that such selection
is subject to the approval of Newco, which shall not be unreasonably withheld)
upon the terms and conditions agreed upon among Newco, the Initiating Holder(s)
and such underwriter(s). Notwithstanding any other provision of this Article 2,
if the underwriter(s) advise the Initiating Holder(s) and Newco in writing that
marketing or other factors require a limitation of the number of Registrable
Securities to be underwritten, then Newco shall so advise all Holders of
Registrable Securities that would otherwise be underwritten pursuant hereto, and
the number of Registrable Securities that may be included in the underwriting
shall be allocated among all Holders thereof, including the Initiating
Holder(s), in proportion (as nearly as practicable) to the number of Registrable
Securities which each Holder requested to be included in such registration;
provided, that there shall be no reduction in the number of shares included in
the registration by Sprint or its successor until all shares of Holders other
than Sprint or its successor have been excluded from such registration. If the
number of Registrable Securities to be underwritten has not been so limited,
Newco may include shares of Common Stock for its own account (or for the account
of other shareholders) in such registration if the underwriter(s) so agree and
to the extent that, in the opinion of such underwriter(s), the inclusion of such
additional shares will not adversely affect the offering and successful
marketing of the Registrable Securities included in such registration and if the
number of Registrable Securities that would otherwise have been included in such
registration and underwriting will not thereby be limited.

                                       6
<PAGE>
 
     Section 2.3   Newco shall not be obligated to effect a total of more than
four (4) registrations and shall not be obligated to cause any registration
pursuant to this Article 2 to be declared effective unless at least nine months
have elapsed since the prior Registration Statement filed pursuant to Article II
ceased to be effective.


                                  ARTICLE 3.

                            INCIDENTAL REGISTRATION

                                       7
<PAGE>
 
    If at any time (but without any obligation to do so) Newco proposes to
register (including a registration effected by Newco for shareholders other than
the Holders) any shares of Common Stock under the Securities Act in connection
with the public offering of such shares solely for cash on any form of
Registration Statement in which the inclusion of Registrable Securities is
appropriate (other than a registration (i) relating solely to the sale of
securities to participants in a Company stock or stock option plan, (ii)
pursuant to a Registration Statement on Form S-4 or Form S-8 (or any successor
forms) or any form that does not include substantially the same information,
other than information relating to the selling shareholders or their plan of
distribution, as would be required to be included in a Registration Statement
covering the sale of Registrable Securities, (iii) in connection with any
dividend reinvestment or similar plan, or (iv) for the sole purpose of offering
securities to another entity or its security holders in connection with the
acquisition of assets or securities of such entity or any similar business
combinations transaction), Newco shall promptly give each Holder written notice
of such registration at least 10 days before the anticipated filing date of any
such Registration Statement. Such notice shall describe fully the proposed
method of distribution of the securities being registered. If the registration
of which Newco gives notice is for a registered public offering involving an
underwriting, Newco shall so advise each of the Holders as a part of the written
notice given pursuant to this Article. Upon the written request of any Holder
given within 10 days after the delivery of such notice by Newco, Newco shall
cause to be registered under the Securities Act all of the Registrable
Securities that such Holder has so requested to be registered. Newco may decline
to file a Registration Statement after giving notice to the Holders, or withdraw
a Registration Statement after filing and after such notice, but prior to the
effectiveness thereof, provided that Newco shall promptly notify each Holder of
Registrable Securities in writing of any such action and provided further that
Newco shall bear all out-of-pocket expenses incurred by each Holder or otherwise
in connection with such declined or withdrawn Registration Statement. Further,
any such declining or withdrawal shall be without prejudice to the rights (if
any) of the Holders immediately to request that such registration be effected as
a registration under Article 2. The right of any Holder to have Registrable
Securities included in such Registration Statement shall be conditioned upon
participation in any underwriting to the extent provided herein. Newco shall not
be required to include any Registrable Securities in such underwriting unless
the Holders thereof agree to enter into an underwriting agreement in customary
form, and upon terms and conditions agreed upon among such Holders, Newco and
the underwriter(s), with the underwriter(s) selected by Newco. In the event that
the underwriter(s) shall advise Newco that marketing or other factors require a
limitation of the number of shares to be underwritten, then Newco shall so
advise all Holders of Registrable Securities that would otherwise be
underwritten pursuant hereto. The underwriter(s) may exclude some or all of the
Registrable Securities from such underwriting and the number of Registrable
Securities, if any, that may be included in the underwriting shall be allocated
among all Holders thereof in proportion (as nearly as practicable) to the number
of Registrable Securities which each Holder requested be included in such
registration. Nothing in this Article 3 is intended to diminish the number of
shares to be sold by Newco in such underwriting. Newco and the underwriter(s)
selected by Newco shall make all determinations with respect to the timing,
pricing and other matters related to the offering, provided that no Holder shall
be obligated to sell any Registrable Securities in such offering and may be
withdrawn at any time for any reason, including a disagreement with respect to
the timing, pricing and other matters related to the offering.

                                       8
<PAGE>
 
                                  ARTICLE 4.

                            REGISTRATION PROCEDURE

     Section 4.1   Whenever required under this Agreement to effect the
registration of any Registrable Securities, Newco shall, as expeditiously as
reasonably practicable:

          (i)   Prepare and file with the SEC as soon as practicable a new
     Registration Statement with respect to such Registrable Securities and use
     its reasonable best efforts to cause such Registration Statement to become
     effective as promptly as practicable, and keep such Registration Statement
     continuously effective for up to 120 days; provided, however, that no
     Registration Statement need remain in effect after all Registrable
     Securities covered thereby have been sold and the confirmation of sale and
     prospectus delivery requirements of the Securities Act and applicable state
     securities or blue sky laws have been effected.

          (ii)  Furnish to each Holder and to any underwriter, before filing
     with the SEC, copies of any Registration Statement (including all exhibits)
     and any prospectus forming a part thereof and any amendments and
     supplements thereto (including all documents incorporated or deemed
     incorporated by reference therein prior to the effectiveness of such
     Registration Statement and including each preliminary prospectus, any
     summary prospectus or any term sheet (as such term is used in Rule 434
     under the Securities Act)) and any other prospectus filed under Rule 424
     under the Securities Act, which documents, other than documents
     incorporated or deemed incorporated by reference, will be subject to the
     review of the Holders and any such underwriter for a period of at least two
     business days. Newco shall not file any such Registration Statement or such
     prospectus or any amendment or supplement to such Registration Statement or
     prospectus to which any Holder or any such underwriter shall reasonably
     object within two business days after the receipt thereof. A Holder or such
     underwriters, if any, may only object to such filing if the Registration
     Statement, amendment, prospectus or supplement, as applicable, as proposed
     to be filed, contains a material misstatement or omission.

          (iii) Prepare and file with the SEC such amendments and supplements to
     such Registration Statement and the prospectus used in connection with such
     Registration Statement as may be necessary to comply with the provisions of
     the Securities Act with respect to the disposition of all securities
     covered by such Registration Statement.

          (iv)  Furnish to the Holders of Registrable Securities to be
     registered and to any underwriter, without charge, such number of copies of
     a prospectus, including each preliminary prospectus, summary prospectus or
     term sheet, and any amendment or supplement thereto as they may, from time
     to time, reasonably request and a reasonable number of copies of the then-
     effective Registration Statement and any post-effective amendment thereto,
     including financial statements and schedules, all documents incorporated
     therein by reference and all exhibits (including those incorporated by
     reference).

                                       9
<PAGE>
 
          (v)    To the extent practicable, promptly prior to the filing of any
     document that is to be incorporated by reference into any Registration
     Statement or prospectus forming a part thereof subsequent to the
     effectiveness thereof, and in any event no later than the date such
     document is filed with the SEC, provide copies of such document to the
     Holders of Registrable Securities covered thereby and any underwriter and
     make representatives of Newco available for discussion of such document and
     other customary due diligence matters, and include in such document prior
     to the filing thereof such information as any Holder or any such
     underwriter may reasonably request.

          (vi)   Use its reasonable best efforts (x) to register and qualify the
     securities covered by such Registration Statement under such other
     securities or blue sky laws of such jurisdictions as shall be reasonably
     requested by the Holders, (y) to keep such registration or qualification in
     effect for so long as the applicable Registration Statement remains in
     effect, and (z) to take any other action which may be reasonably necessary
     or advisable to enable such Holders to consummate the disposition in such
     jurisdictions of the securities to be sold by such Holders; provided,
     however, that Newco shall not be required to qualify to do business or to
     file a general consent to service of process in any such states or
     jurisdictions where it would not otherwise be required to so qualify to do
     business or consent to service of process or subject itself to taxation in
     any such jurisdiction.

          (vii)  Use its reasonable best efforts to cause all Registrable
     Securities covered by such Registration Statement to be registered with or
     approved by such other federal or state governmental agencies or
     authorities as may be necessary in the opinion of counsel to Newco and
     counsel to the Holders of Registrable Securities to enable the Holders
     thereof to consummate the disposition of such Registrable Securities.

          (viii) Cooperate with the Holders of Registrable Securities and each
     underwriter participating in the disposition of such Registrable Securities
     and their respective counsel in connection with any filings required to be
     made with the National Association of Securities Dealers, Inc.

          (ix)   In the event of any underwritten public offering, enter into
     and perform its obligations under an underwriting agreement, in usual and
     customary form, with the underwriter(s) of such offering, with such terms
     and conditions as Newco, the Holders and the underwriter(s) may reasonably
     agree, including customary indemnification and contribution obligations of
     the type contemplated by Article 8 hereof. Newco agrees to cause the
     participation by senior management of Newco in such meetings with and
     presentations (including the provision of all customary information in
     connection therewith) to investors, analysts, investment banking firms and
     other institutions as are usual and customary in connection with the public
     offering of registered securities by companies similar to Newco. Each
     Holder participating in such underwriting shall also enter into and perform
     its obligations under such an agreement; provided, that no Holder shall be
     required to make any
                                       10
<PAGE>
 
     representation concerning information in a Registration Statement that is
     more broad than the information for which such Holder has agreed to provide
     indemnity under Section 8.2.

          (x)   Promptly notify each Holder of Registrable Securities covered by
     a Registration Statement (A) upon discovery that, or upon the happening of
     any event as a result of which, the prospectus forming a part of such
     Registration Statement, as then in effect, includes an untrue statement of
     a material fact or omits to state any material fact required to be stated
     therein or necessary to make the statements therein, in light of the
     circumstances under which they were made, not misleading, (B) of the
     issuance by the SEC of any stop order suspending the effectiveness of such
     Registration Statement or the initiation of proceedings for that purpose,
     (C) of any request by the SEC for (1) amendments to such Registration
     Statement or any document incorporated or deemed to be incorporated by
     reference in any such Registration Statement, (2) supplements to the
     prospectus forming a part of such Registration Statement or (3) additional
     information, or (D) of the receipt by Newco of any notification with
     respect to the suspension of the qualification or exemption from
     qualification of any of the Registrable Securities for sale in any
     jurisdiction or the initiation of any proceeding for such purpose, and at
     the request of any such Holder promptly prepare, file with the SEC and
     other required agency, and furnish to it a reasonable number of copies of a
     supplement to or an amendment of such prospectus as may be necessary or
     take other action so that, as applicable, (a) as thereafter delivered to
     the purchasers of such securities, such prospectus shall not include an
     untrue statement of a material fact or omit to state a material fact
     required to be stated therein or necessary to make the statements therein,
     in the light of the circumstances under which they were made, not
     misleading, (b) such stop order is lifted at the earliest possible time, or
     the proceedings that might otherwise lead to a stop order are terminated at
     the earliest practicable time, (c) such request by the SEC is satisfied, or
     (d) such suspension is lifted at the earliest possible time.

          (xi)  Use its reasonable best efforts to obtain the withdrawal of any
     order suspending the effectiveness of any such registration, or the lifting
     of any suspension of the qualification (or exemption from qualification) of
     any of the Registrable Securities for sale in any jurisdiction.

          (xii) If requested by any Initiating Holder, or any underwriter,
     promptly incorporate in such Registration Statement or prospectus, pursuant
     to a supplement or post-effective amendment if necessary, such information
     as the Initiating Holder and any underwriter may reasonably request to have
     included therein, including information relating to the "plan of
     distribution" of the Registrable Securities, information with respect to
     the principal amount or number of shares of Registrable Securities being
     sold to such underwriter, the purchase price being paid therefor and any
     other terms of the offering of the Registrable Securities to be sold in
     such offering and make all required filings of any such prospectus
     supplement or post-effective amendment as soon as practicable after Newco
     is notified of the matters to be incorporated in such prospectus supplement
     or post-effective amendment.

                                       11
<PAGE>
 
          (xiii)  Otherwise use its reasonable best efforts to comply with all
     applicable rules and regulations of the SEC, and make available to its
     security holders, as soon as reasonably practicable, an earnings statement
     covering the period of at least 12 months, but not more than 18 months,
     beginning after the effective date of such Registration Statement, which
     earnings statement shall satisfy the provision of Section 11(a) of the
     Securities Act and Rule 158 promulgated thereunder.

          (xiv)   Provide promptly to the Holders upon request any document
     filed by Newco with the SEC pursuant to the requirements of Section 13 and
     Section 15 of the Exchange Act.

          (xv)    Cause all Registrable Securities covered by the Registration
     Statement to be listed on each securities exchange or automated quotation
     system on which shares of the Common Stock is then listed.  If any of such
     shares are not so listed, Newco shall cause such shares to be listed on the
     securities exchange or automated quotation system as may be reasonably
     requested by the Holders of a majority of the Registrable Securities being
     registered.

          (xvi)   Furnish to the Holders, at the request of any Holder
     requesting registration pursuant to this Agreement, (A) an opinion of
     counsel representing Newco for the purposes of such registration addressed
     to such Holder and dated the date of the closing under the underwriting
     agreement, if any, or the date of effectiveness of the Registration
     Statement if such registration is not an underwritten offering, and (B) if
     such accountant will render such letter to such Holders, a "comfort" letter
     from independent certified public accountants of Newco who have certified
     Newco's financial statements included in such registration with respect to
     events included in and subsequent to the date of such financial statements,
     in each case to be dated such date and to be in form and substance as is
     customarily given by counsel or independent certified public accountants,
     as the case may be, to underwriters in an underwritten public offering,
     addressed to the underwriters.

          (xvii)  Permit a representative of any Holder of Registrable
     Securities, any underwriter participating in any disposition pursuant to
     such registration, and any attorney or accountant retained by such Holder
     or underwriter, to participate, at each Person's own expense, in the
     preparation of the Registration Statement, and cause Newco's officers,
     directors and employees to supply all information reasonably requested by
     any such representative, underwriter, attorney or accountant in connection
     with such registration; provided, however, that such representatives,
     underwriters, attorneys or accountants enter into a confidentiality
     agreement, in form and substance reasonably satisfactory to Newco, prior to
     the release or disclosure of any such information.

          (xviii) Promptly notify the Holders and any underwriter when any
     Registration Statement filed pursuant to this Agreement is declared
     effective.

Notwithstanding the foregoing, Newco may delay, suspend or withdraw any
registration or qualification of Registrable Securities required pursuant to
this Agreement for a period not exceeding 

                                       12
<PAGE>
 
120 days if Newco shall in good faith determine that any such registration would
adversely affect an offering or contemplated offering of any securities of Newco
or any other contemplated material corporate event (including requiring the
premature disclosure of such event); provided that (i) there shall be no more
than three such discontinuances during any two-year period, and (ii) if Newco
imposes such a suspension or a postponement pursuant to this Article 4 following
the printing and distribution of a preliminary prospectus in any underwritten
public offering of Registrable Securities (except such suspension, not to exceed
fifteen days, which results from an event that is not within the reasonable
control of Newco), then Newco shall reimburse the Holder for such printing
expenses and all other Registration Expenses incurred in connection therewith by
the Holder.


                                  ARTICLE 5.

                  HOLDER'S OBLIGATION TO FURNISH INFORMATION

     It shall be a condition precedent to the obligations of Newco to take any
action pursuant to this Agreement with respect to any Registrable Securities
that the Holder of such securities furnish to Newco such information regarding
itself, the Registrable Securities held by it, and the intended method of
disposition of such securities as shall be required to effect the registration
of such Holder's Registrable Securities.

     Each Holder agrees that, upon receipt of any notice from Newco, such Holder
will forthwith discontinue disposition of Registrable Securities pursuant to the
then current prospectus until (i) such Holder is advised in writing by Newco
that a new Registration Statement covering the reoffer of Registrable Securities
has become effective under the Securities Act, (ii) such Holder receives copies
of a supplemented or amended prospectus contemplated by Article 4 which
addresses any additional information, including material nonpublic information,
required to be disclosed therein, or until such Holder is advised in writing by
Newco that the use of the prospectus may be resumed, or (iii) a period of 75
days has elapsed, whichever is sooner.  Newco shall use its reasonable best
efforts to limit the duration of any discontinuance of disposition of
Registrable Securities pursuant to this paragraph.

                                       13
<PAGE>
 
                                  ARTICLE 6.

                             REGISTRATION EXPENSES

     In the case of any demand registration pursuant to Article 2, Newco shall
pay all Registration Expenses.  In the case of any incidental registration
pursuant to Article 3, the requesting Holders shall bear the pro rata share of
underwriter's fees, discounts and commissions incurred in such registration and
any incremental Registration Expenses, in each case, including (i) incremental
registration and qualification fees and expenses, and (ii) any incremental costs
and disbursements (including legal fees and expenses) that result from the
inclusion of the Registrable Securities included in such registration, with such
incremental expenses being borne by the requesting Holders on a pro rata basis.
Notwithstanding the foregoing, if, as a result of the withdrawal of a request
for registration pursuant to Article 2 by any of the Holders, as applicable, the
Registration Statement does not become effective, the Holders and the other
stockholders requesting registration may elect to bear the Registration Expenses
(pro rata on the basis of the number of their shares included in the
registration request, or on such other basis as such Holders and other
stockholders may agree), in which case such registration shall not be counted as
a registration requested under Section 2.3.


                                  ARTICLE 7.

                         EFFECTIVENESS OF REGISTRATION

     A registration requested pursuant to Article 2 will not be deemed to have
been effected if (i) the Registration Statement has not been kept effective for
the period required under Section 4.1(i) of this Agreement, (ii) the offering of
Registrable Securities pursuant to such registration is interfered with by any
stop order, injunction or other order or requirement of the SEC or other
governmental agency or court, (iii) the conditions to the closing of any such
registration that is underwritten are not satisfied, unless such conditions have
not been satisfied by the Holders participating in the underwriting, or (iv)
Newco has not complied with the terms of this Agreement, including Article 4.


                                  ARTICLE 8.

                       INDEMNIFICATION AND CONTRIBUTION

                                       14
<PAGE>
 
     Section 8.1   In the event any Registrable Securities are included in a
Registration Statement pursuant to this Agreement, Newco will indemnify and hold
harmless each Holder, each Person, if any, who "controls" such Holder (within
the meaning of the Securities Act or the Exchange Act) and their respective
directors, officers, employees and agents against all losses, claims, damages,
or liabilities, joint or several, or actions in respect thereof to which such
Holder or other Person entitled to indemnification hereunder may become subject
under the Securities Act, the Exchange Act, state securities or blue sky law,
common law or otherwise, insofar as such losses, claims, damages, liabilities or
actions in respect thereof arise out of, or are based upon, any untrue statement
or alleged untrue statement of any material fact contained in such Registration
Statement, any related preliminary prospectus, or any related prospectus or any
amendment or supplement thereto, offering circular or other document (including
any related notification or the like) incident to any such registration,
qualification or compliance, or arise out of, or are based upon, any omission or
alleged omission to state therein a material fact required to be stated therein
or necessary to make the statements therein not misleading, or any violation by
Newco of the Securities Act, the Exchange Act, state securities or blue sky law,
common law or otherwise and relating to action or inaction required of Newco in
connection with any such registration, qualification or compliance, and Newco
will reimburse each such Holder or other Person entitled to indemnification
hereunder for any legal or other expenses reasonably incurred by it in
connection with investigating or defending any such loss, claim, damage,
liability or action; provided, however, that Newco will not be so liable to the
extent that any such loss, claim, damage, liability or action arises out of, or
is based upon, an untrue statement or alleged untrue statement of a material
fact or an omission or alleged omission to state a material fact in such
Registration Statement, such preliminary prospectus, or such prospectus, or any
such amendment or supplement thereto, offering circular or other document
(including any related notification or the like) incident to any registration,
qualification or compliance,  in reliance upon, and in conformity with, written
information furnished to Newco by the Holder specifically for use therein.
Newco will also indemnify underwriters and dealer managers participating in the
distribution, each Person who "controls" such Persons (within the meaning of the
Securities Act or the Exchange Act), and their respective officers, directors,
employees and agents to the same extent as provided above with respect to the
indemnification of the Holders, if so requested, except (i) with respect to
information furnished in writing specifically for use in any prospectus or
Registration Statement by any selling Holders or any such underwriters, or (ii)
to the extent that any such loss, claim, damage, liability or action is solely
attributable to such underwriter's failure to deliver a final prospectus (or
amendment or supplement thereto) that corrects a material misstatement or
omission contained in the preliminary prospectus (or final prospectus).

                                       15
<PAGE>
 
     Section 8.2   With respect to written information furnished to Newco by a
Holder specifically for use in a Registration Statement, any related preliminary
prospectus, or any related prospectus or any supplement or amendment thereto,
offering circular or other document (including any related notification or the
like) incident to any registration, qualification or compliance, if Registrable
Securities held by it are included in the securities as to which such
registration, qualification or compliance is being effected, such Holder will
severally indemnify and hold harmless Newco and its directors, officers,
employees, agents and each Person, if any, who "controls" Newco (within the
meaning of the Securities Act or the Exchange Act) and any other Holder against
any losses, claims, damages or liabilities, joint or several, or actions in
respect thereof, to which Newco or such other Person entitled to indemnification
hereunder may become subject under the Securities Act, the Exchange Act, state
securities or blue sky laws, common law or otherwise, insofar as such losses,
claims, damages, liabilities or actions in respect thereof arise out of, or are
based upon, any untrue statement or alleged untrue statement of any material
fact contained in such Registration Statement, such preliminary prospectus, or
such prospectus, or any such amendment or supplement thereto, offering circular
or other document (including any related notification or the like) incident to
any registration, qualification or compliance, or arise out of, or are based
upon, the omission or alleged omission to state therein a material fact required
to be stated therein or necessary to make the statements therein not misleading;
and such Holder will reimburse Newco and such other Persons for any legal or
other expenses reasonably incurred by them in connection with investigating or
defending any such loss, claim, damage, liability or action, in each case to the
extent, but only to the extent, that the same arises out of, or is based upon,
an untrue statement or alleged untrue statement of material fact or an omission
or alleged omission to state a material fact in such Registration Statement,
such preliminary prospectus, or such prospectus or any such amendment or
supplement thereto in reliance upon, and in conformity with, such written
information; provided, however, that the obligations of each of the Holders
hereunder shall be limited to an amount equal to the net proceeds to such Holder
of Registrable Securities sold as contemplated herein.  Newco shall be entitled
to receive indemnities from underwriters, selling brokers, dealer managers and
similar securities industry professionals participating in the distribution, to
the same extent as provided above with respect to the information so furnished
in writing by such Persons specifically for inclusion in any prospectus or
Registration Statement.  The Holder will also indemnify underwriters and dealer
managers participating in the distribution and each Person who "controls" such
Persons (within the meaning of the Securities Act or the Exchange Act), their
officers, directors, employees and agents to the same extent as provided herein
with respect to the indemnification of Newco, if so requested.

     Section 8.3   Promptly after receipt by an indemnified Party of notice of
any claim or the commencement of any action, the indemnified Party will, if a
claim in respect thereof is to be made against the indemnifying Party, notify
the indemnifying Party in writing of the claim or the commencement of that
action; provided, however, that the failure to notify the indemnifying Party
will not relieve it from any liability that it may have to the indemnified Party
except to the extent it was actually damaged or suffered any loss or incurred
any additional expense as a result thereof. If any such claim or action is
brought against an indemnified Party, and it notifies the indemnifying Party
thereof, the indemnifying Party will be entitled to assume the defense thereof
with counsel selected by the indemnifying Party and reasonably satisfactory to
the indemnified Party. After notice from the indemnifying Party to the
indemnified Party of its election to assume the defense of such claim or 

                                       16
<PAGE>
 
action, (i) the indemnifying Party will not be liable to the indemnified Party
for any legal or other expense subsequently incurred by the indemnified Party in
connection with the defense thereof, (ii) the indemnifying Party will not be
liable for the costs and expenses of any settlement of such claim or action
unless such settlement was effected with the written consent of the indemnifying
Party or the indemnified Party waived any rights to indemnification hereunder in
writing, in which case the indemnified Party may effect a settlement without
such consent, and (iii) the indemnified Party will be obligated to cooperate
with the indemnifying Party in the investigation of such claim or action;
provided, however, that the indemnified Party who may be subject to liability
arising out of any claim in respect of which indemnity may be sought by such
indemnified Party against Newco may employ its own counsel if such indemnified
Party has been advised by counsel in writing that, in the reasonable judgment of
such counsel, it is advisable for such indemnified Party to be represented by
separate counsel due to the presence of actual or potential conflicts of
interest, and in that event the fees and expenses of such separate counsel will
also be paid by Newco; provided that Newco shall not be liable for the
reasonable fees and expenses of more than one separate counsel at any time for
all such indemnified parties. An indemnifying Party shall not, without the prior
written consent of the indemnified parties, settle, compromise or consent to the
entry of any judgment with respect to any pending or threatened claim, action,
suit or proceeding in respect of which indemnification or contribution may be
sought hereunder (whether or not the indemnified parties are actual or potential
parties to such claim or action) unless such settlement, compromise or consent
includes a release of such indemnified Party reasonably acceptable to such
indemnified Party from all liability arising out of such claim, action, suit or
proceeding and unless the indemnifying Party shall confirm in a written
agreement reasonably acceptable to such indemnified Party, that notwithstanding
any federal, state or common law, such settlement, compromise or consent shall
not adversely affect the right of any indemnified Party to indemnification or
contribution as provided in this Agreement.

     Section 8.4    If for any reason the indemnification provided for in
Sections 8.1 or 8.2 is unavailable to an indemnified Party or is insufficient to
hold such indemnified Party harmless as contemplated therein, then the
indemnifying Party shall contribute to the amount paid or payable by the
indemnified Party as a result of such loss, claim , damage or liability in such
proportion as is appropriate to reflect not only the relative benefits received
by the indemnifying Party and the indemnified Party, but also the relative fault
of the indemnifying Party and the indemnified Party, as well as any other
relevant equitable considerations. The relative fault of the indemnifying Party
and of the indemnified Party shall be determined by reference to, among other
things, whether the untrue (or alleged untrue) statement of a material fact or
the omission (or alleged omission) to state a material fact relates to
information supplied by the indemnifying Party or by the indemnified Party and
the parties' relative intent, knowledge, access to information and opportunity
to correct or prevent such statement or omission; provided, however, that the
obligations of each of the Holders hereunder shall be limited to an amount equal
to the net proceeds to such Holder of Registrable Securities sold as
contemplated herein. No Person guilty of fraudulent misrepresentation (within
the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any Person who was not guilty of such fraudulent
misrepresentation.

                                       17
<PAGE>
 
     Section 8.5   The obligations under this Article 8 shall survive the
completion of any offering of Registrable Securities in a Registration Statement
pursuant to this Agreement, and otherwise.

     Section 8.6   Notwithstanding the foregoing provisions of this Article 8,
to the extent that the provisions regarding indemnification and contribution
contained in the underwriting agreement entered into in connection with any
underwritten public offering contemplated by this Agreement are in conflict with
the foregoing provisions, the provisions in such underwriting agreement shall be
controlling, provided that each Holder, each Person, if any, who controls such
Holder (within the meaning of the Securities Act or the Exchange Act) and their
respective directors, officers, employees and agents receive protection at least
as extensively and are subject to obligations that are no more extensive, than
those set forth in this Article 8.


                                  ARTICLE 9.

                          REPORTS UNDER EXCHANGE ACT

     With a view to making available to the Holders the benefits of Rule 144 and
any other rule or regulation of the SEC that may at any time permit a Holder to
sell securities of Newco to the public without registration, Newco agrees that
so long as Newco is subject to the reporting requirements of the Exchange Act,
to:

          (1)  Make and keep public information available, as those terms are
     understood and defined in Rule 144;

          (2)  File with the SEC in a timely manner all reports and other
     documents required of Newco under the Securities Act and the Exchange Act;
     and

          (3)  Furnish to any Holder, so long as the Holder owns any Registrable
     Securities, upon request (a) a written statement by Newco as to its
     compliance with the reporting requirements of Rule 144, the Securities Act
     and the Exchange Act, (b) a copy of the most recent annual or quarterly
     report of Newco and such other reports and documents so filed by Newco, and
     (c) such other information as may be reasonably requested in availing any
     Holder of any rule or regulation of the SEC which permits the selling of
     any such securities without registration or pursuant to such form.


                                  ARTICLE 10.

                                       18
<PAGE>
 
                       ASSIGNMENT OF REGISTRATION RIGHTS

     The Holders' rights pursuant to this Agreement may not be assigned or
transferred by any Holder without the consent of Newco; provided, however, that
any transfer or assignment of the Common Stock or the Convertible Securities
permitted pursuant to the Governance Agreement, including any assignment or
transfer to an Affiliate of Sprint or any transfer pursuant to any merger or
sale of substantially all of the assets of Sprint or such Affiliates shall also
cause a permitted transfer or assignment of the rights under this Agreement and,
provided, further, that assignment or transfer may be made by (i) Sprint to any
of its Affiliates, (ii) any Affiliate of Sprint to any other Affiliate of
Sprint, or (iii) pursuant to any merger or sale of substantially all of the
assets of Sprint or such Affiliates (or any transaction having such effect)
without the consent of Newco.  Such an assignment or transfer shall be in
accordance with all applicable securities laws.


                                  ARTICLE 11.

                       AMENDMENT OF REGISTRATION RIGHTS

     Any provision of this Agreement may be amended or the observance thereof
may be waived (either generally or in a particular instance and either
retroactively or prospectively), only with the written consent of Newco and the
Holders of a majority of Registrable Securities then outstanding. Any amendment
or waiver effected in accordance with this Section shall be binding upon each
Holder of any Registrable Securities, each future Holder of such Registrable
Securities and Newco.


                                  ARTICLE 12.

                              STAND-OFF AGREEMENT

     Any Holder, if requested by Newco or an underwriter of an underwritten
public offering, agrees not to sell, make any short sale of, loan, grant any
option for the purchase of, or otherwise transfer or dispose of any Common Stock
held by such Holder (other than Registrable Securities included in the
registration) without the prior written consent of Newco or such underwriter(s),
as the case may be, during a period of up to five days prior to the pricing of
such public offering and 90 days following the effective date of any
underwritten registration of Newco's securities effected pursuant to Articles 2
or 3. Such agreement shall be in writing in form satisfactory to Newco and such
underwriter, and may be included in the underwriting agreement. Newco may impose
stop-transfer instructions with respect to the securities subject to the
foregoing restriction until the end of the required stand-off period.


                                  ARTICLE 13.

                                       19
<PAGE>
 
                      TERMINATION OF REGISTRATION RIGHTS

     If the number of shares of Registrable Securities owned by a Holder
represents less than one percent (1%) of the total number of shares of Common
Stock then outstanding, then such Holder's registration rights under this
Agreement relating to such Registrable Securities shall terminate on the date
such Holder is able to dispose of all of its shares of Registrable Securities in
any 90-day period pursuant to Rule 144. All registration rights (except for
rights previously exercised in connection with an underwritten public offering
pursuant to Article 3) of a Holder under this Agreement shall terminate on the
date on which all of such Holder's shares of Registrable Securities can be sold
pursuant to Rule 144(k).


                                  ARTICLE 14.

                                COMPANY OPTION

     Notwithstanding any provision to the contrary, Newco shall be granted an
option to purchase the number of shares of Registrable Securities set forth in a
Holder's written request that such Registrable Securities shall be Registered
pursuant to Article 2 or Article 3, which must be exercised by delivering
written notice of exercise to Sprint within ten business days after receipt of
such notice. The exercise price per share under such option shall be the average
Closing Price for a period of 20 trading days immediately preceding the date of
such written request for Registration.  The aggregate purchase price shall be
paid to Holders, based on the number of Registrable Shares proposed to be sold
as set forth in such notice, and shall be payable in cash by wire transfer of
immediately available funds to the accounts specified in wire transfer
instructions supplied by a duly authorized officer of a Holder with respect to
payments due such Holder.


                                  ARTICLE 15.

                              EXERCISE OF RIGHTS

     Notwithstanding any other provision of this Agreement to the contrary, the
Holders may not exercise rights to Register Registrable Securities hereunder
until 27 months have elapsed after the Closing Date.  Notwithstanding anything
herein to the contrary, during such 27 month period, Newco will not be obligated
to provide to the Holders notice of a registration as otherwise required under
Article 3.


                                  ARTICLE 16.

                                       20
<PAGE>
 
                                 MISCELLANEOUS

     Section 16.1   Confidential Information.  No Holder may use any 
                    ------------------------      
confidential information received by it pursuant to this Agreement in violation
of the Exchange Act or reproduce, disclose, or disseminate such information to
any other Person (other than its employees or agents having a need to know the
contents of such information and its accountants and attorneys), except to the
extent reasonably related to the exercise of rights under this Agreement, unless
(i) such information has been made available to the public generally (other than
by such recipient in violation of this Section 16.1), or (ii) such recipient is
required to disclose such information by a governmental body, regulatory agency
or subpoena or by law in connection with a transaction that is not otherwise
prohibited hereby and, to the extent possible, Newco is given a reasonable
opportunity to obtain injunctive relief or a protective order to maintain the
confidentiality of such information.

     Section 16.2   Notices.  Unless otherwise provided herein, any notice,
                    -------                                                
request, waiver, instruction, consent or document or other communication
required or permitted to be given by this Agreement shall be effective only if
it is in writing and (a) delivered by hand or sent by certified mail, return
receipt requested, (b) if sent by a nationally-recognized overnight delivery
service with delivery confirmed, or (c) if telexed or telecopied, with receipt
confirmed as follows:

          Newco:              Dolphin, Inc.
                              3100 New York Drive
                              Pasadena, California 91107
                              Attn: President and Chief Executive Officer
                              Telecopy No.: (626) 296-2161

          with a copy to:     Hunton & Williams
                              NationsBank Plaza, Suite 4100
                              600 Peachtree Street, N.E.
                              Atlanta, Georgia 30308-2216
                              Attn: Scott M. Hobby, Esq.
                              Telecopy No.: (404) 888-4190

          Sprint:             Sprint Corporation
                              2330 Shawnee Mission Parkway
                              Westwood, Kansas 66205
                              Attn: Chief Financial Officer
                              Telecopy No.: (913) 624-8426

          with a copy to:     Sprint Corporation
                              2330 Shawnee Mission Parkway
                              Westwood, Kansas 66205
                              Attn: Corporate Secretary
                              Telecopy No.: (913) 624-2256

                                       21
<PAGE>
 
          with an additional  Stinson, Mag & Fizzell, P.C.
          copy to:            1201 Walnut, Suite 2800
                              P.O. Box 419251
                              Kansas City, Missouri 64141-6251
                              Attn: John A. Granda, Esq.
                              Telecopy No.: (816) 691-3495

The Parties shall promptly notify each other of any change in their respective
addresses or facsimile numbers or of the Person or office to receive notices,
requests or other communications under this Section 16.2.  Notice shall be
deemed to have been given as of the date when so personally delivered, when
physically delivered by the U.S. Postal Service at the proper address, the next
day when delivered during business hours to an overnight delivery service
properly addressed or when receipt of a telex or telecopy is confirmed, as the
case may be, unless the sending Party has actual Knowledge (as defined in the
Investment Agreement) that such notice was not received by the intended
recipient.

     Section 16.3   Entire Agreement. This Agreement and, upon execution by all
                    ----------------                                           
Parties thereto, the Ancillary Agreements, together with the respective
Schedules and Exhibits hereto and thereto, embodies the entire agreement and
understanding of the Parties in respect to the matter contemplated hereby and
thereby and supersedes and renders null and void all other prior agreements and
understandings, written and oral, with respect to the subject matter hereof and
thereof, provided that this provision shall not abrogate any other written
         --------                                                         
agreement executed simultaneously with this Agreement by one or more of the
Parties to the Investment Agreement with respect to the Parties signing such
other agreement.  No Party shall be liable or bound to any other Party in any
manner by any promises, conditions, representations, warranties, covenants,
agreements and understandings, except as specifically set forth herein or
therein.

     Section 16.4   Waiver.  Except as otherwise permitted in this Agreement, 
                    ------              
the terms or conditions of this Agreement may not be waived unless set forth in
a writing signed by the Party entitled to the benefits thereof. No waiver of any
of the provisions of this Agreement shall be deemed or shall constitute a waiver
of such provision at any time in the future or a waiver of any other provision
hereof. The rights and remedies of the Parties are cumulative and not
alternative. Except as otherwise provided in this Agreement, neither the failure
nor any delay by any Party in exercising any right, power or privilege under
this Agreement, or any of the Ancillary Agreements or the documents referred to
in this Agreement or therein will operate as a waiver of such right, power or
privilege, and no single or partial exercise of any such right, power or
privilege will preclude any other or further exercise of such right, power or
privilege or the exercise of any other right, power or privilege.

     Section 16.5   Successors and Assigns.  Neither this Agreement nor any of 
                    ----------------------      
the rights, interests or obligations under this Agreement shall be assigned or
transferred, in whole or in part, by any of the Parties without the prior
written consent of the other Parties except as set forth in Article 10.  Subject
to the preceding sentence, this Agreement will be binding upon, inure to the
benefit of, and be enforceable by, the parties and their respective successors
and assigns.

                                       22
<PAGE>
 
     Section 16.6   Governing Law.  This Agreement shall be governed by the laws
                    -------------                                               
of the State of Delaware, without regard to conflict of laws principles.

     Section 16.7   Severability.  If any term or provision of this Agreement or
                    ------------                                                
the application thereof to either Party or set of circumstances shall, in any
jurisdiction and to any extent, be finally held invalid or unenforceable, such
term or provision shall only be ineffective as to such jurisdiction, and only to
the extent of such invalidity or unenforceability, without invalidating or
rendering unenforceable any other terms or provisions of this Agreement or under
any other circumstances, and the Parties shall negotiate in good faith a
substitute provision which comes as close as possible to the invalidated or
unenforceable term or provision, and which puts each Party in a position as
nearly comparable as possible to the position it would have been in but for the
finding of invalidity or unenforceability, while remaining valid and
enforceable.

     Section 16.8   No Inconsistent Agreements.  Newco will not hereafter enter
                    --------------------------                                 
into any agreement with respect to its securities which is inconsistent with the
rights granted to the Holders of Registrable Securities in this Agreement.

     Section 16.9   Remedies.  The Parties hereto recognize and agree that
                    --------                                              
immediate irreparable damages for which there is no adequate remedy at law would
occur in the event that any provision of this Agreement is not performed in
accordance with the specific terms hereof or is otherwise breached.  It is
accordingly agreed that in the event of a failure by a Party to perform its
obligations under this Agreement, the non-breaching Party shall be entitled to
specific performance through injunctive relief to prevent breaches of the
provisions of this Agreement and to enforce specifically the provisions of this
Agreement in any action instituted in any court having subject matter
jurisdiction, in addition to any other remedy to which such Party may be
entitled, at law or in equity.

     Section 16.10  Counterparts.  This Agreement may be executed in one or more
                    ------------                                                
counterparts each of which when so executed and delivered shall for all purposes
be deemed to be an original but all of which, when taken together, shall
constitute one and the same Agreement.

     Section 16.11  No Third-Party Beneficiaries.  Nothing in this Agreement,
                    ----------------------------                             
express or implied, shall create or confer upon any Person (including but not
limited to any employees), other than the Parties or their respective successors
and permitted assigns, any legal or equitable rights, remedies, obligations,
liabilities or claims under or with respect to this Agreement, except as
expressly provided herein.

     Section 16.12  Interpretation.  (a) Each Party is a sophisticated legal
                    --------------                                           
entity that was advised by experienced counsel and, to the extent it deemed
necessary, other advisors in connection with this Agreement and the Ancillary
Agreements.  Accordingly, each Party hereby acknowledges that no Party has
relied or will rely in respect of this Agreement or any Ancillary Agreements or
the transactions contemplated hereby or thereby upon any document or written or
oral information previously furnished to or discovered by it or its
representatives, other than this Agreement or any Ancillary Agreements or the
documents and instruments delivered at the Closing.

                                       23
<PAGE>
 
     (b)  No provision of this Agreement shall be interpreted in favor of, or
against, either of the Parties by reason of the extent to which either such
Party or its counsel participated in the drafting thereof or by reason of the
extent to which any such provision is inconsistent with any prior draft hereof
or thereof.

     Section 16.13  Exclusive Jurisdiction and Consent to Service of Process.  
                    --------------------------------------------------------   
The Parties agree that any Action (as defined in the Investment Agreement)
arising out of or relating to this Agreement, shall be brought by the Parties
and held and determined only in a Delaware state court or a federal court
sitting in that State which shall be the exclusive venue of any such Action.
Each Party waives any objection which such Party may now or hereafter have to
the laying of venue of any such Action, and irrevocably consents and submits to
the jurisdiction of any such court (and the appropriate appellate courts) in any
such Action. Any and all service of process and any other notice in any such
Action shall be effective against such Party when transmitted in accordance with
Section 16.02. Nothing contained herein shall be deemed to affect the right of
any Party to serve process in any manner permitted by Law.

     Section 16.14  WAIVER OF JURY TRIAL.  EACH OF THE PARTIES TO THIS AGREEMENT
                    --------------------                                        
HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE ANY RIGHT THAT THEY MAY HAVE TO A
TRIAL BY JURY IN ANY ACTION INVOLVING, DIRECTLY OR INDIRECTLY, ANY MATTER
(WHETHER SOUNDING IN TORT, CONTRACT OR OTHERWISE) IN ANY WAY ARISING OUT OF,
RELATED TO, OR CONNECTED WITH THIS AGREEMENT OR ANY OTHER ANCILLARY AGREEMENT OR
THE RELATIONSHIP ESTABLISHED HEREUNDER OR THEREUNDER.

     Section 16.15  Effectiveness of Agreement.  This Agreement shall not become
                    --------------------------                                  
effective until the Closing (as defined in the Investment Agreement) and then
only if all of the applicable conditions to the Closing have been satisfied or
waived.

                                       24
<PAGE>
 
     IN WITNESS WHEREOF, the Parties have caused their respective duly
authorized officers to execute this Agreement as of the day and year first above
written.

                                        DOLPHIN, INC.


                                        By: /s/ Charles G. Betty
                                            ------------------------------------
                                              Name: Charles G. Betty
                                              Title: President & CEO


                                        SPRINT CORPORATION


                                        By: /s/ Theodore H. Schell 
                                            ------------------------------------
                                              Name: Theodore H. Schell
                                              Title: Vice President - Strategic
                                                     Planning and Corporate 
                                                     Development

                                        SPRINT COMMUNICATIONS COMPANY L.P.
                                        By: US Telecom, Inc., General Partner


                                        By: /s/ Don A. Jensen 
                                            ------------------------------------
                                              Name: Don A. Jensen
                                              Title: Vice President and 
                                                     Secretary



               SIGNATURE PAGE FOR REGISTRATION RIGHTS AGREEMENT

                                       25

<PAGE>


                                                              EXHIBIT NO. (C)(7)

                                 DOLPHIN, INC.

                    CERTIFICATE OF DESIGNATION, PREFERENCES
              AND RIGHTS OF SERIES A CONVERTIBLE PREFERRED STOCK

                              ___________________

                        PURSUANT TO SECTION 151 OF THE
               GENERAL CORPORATION LAW OF THE STATE OF DELAWARE

                              ___________________

     Dolphin, Inc. (the "Corporation"), certifies that pursuant to the authority
contained in Article IV of its Certificate of Incorporation, and in accordance
with the provisions of Section 151 of the General Corporation Law of the State
of Delaware, its Board of Directors has adopted the following resolution
creating a series of the Preferred Stock, $.01 par value, designated as Series A
Convertible Preferred Stock:

     RESOLVED, that a series of the class of Preferred Stock, $.01 par value, of
the Corporation be hereby created, and that the designation and amount thereof
and the voting powers, preferences, and relative, participating, optional and
other special rights of the shares of such series, and the qualifications,
limitations or restrictions thereof are set forth in this Certificate of
Designation, Preferences and Rights of Series A Convertible Preferred Stock (the
"Certificate of Designation") as follows:

     1.   Designation and Amount.  Preferred Stock of the Corporation created
          ----------------------                                             
and authorized for issuance hereby shall be designated as "Series A Convertible
Preferred Stock" (herein referred to as "Series A Preferred Stock"), having a
par value per share equal to $.01, and the number of shares constituting such
series shall be 10,000,000. The Corporation shall only originally issue shares
of Series A Preferred Stock to Sprint Corporation, a Kansas corporation, and its
successors and Affiliates.

     2.   Rank.  The Series A Preferred Stock shall, with respect to dividend
          ----                                                               
rights and rights upon liquidation, winding up or dissolution, whether voluntary
or involuntary, rank prior to the Common Stock (as defined in Section 10 hereof)
and all classes or series of preferred stock, preference stock or any other
capital stock or equity securities of the Corporation, whether now issued or
hereafter created. All equity securities of the Corporation to which the Series
A Preferred Stock ranks prior, including the Common Stock, are collectively
referred to herein as the "Junior Securities."
<PAGE>
 
     3.   Dividend Provisions.
          ------------------- 

          (a)  Dividends.
               --------- 

               (i)  Mandatory PIK Dividends. On and before the fifth anniversary
          of the Purchase Date, the Corporation shall pay, and the holders of
          outstanding shares of Series A Preferred Stock ("Holders") shall be
          entitled to receive on each Dividend Payment Date, a dividend on each
          share of Series A Preferred Stock at a rate per annum equal to three
          percent (3.00%) of the Liquidation Value (as then increased, as
          provided in Section 4(a)) per share of Series A Preferred Stock,
          accruable and compounded quarterly on each of the Dividend Accrual
          Dates, which dividend shall be in the form of an increase in the
          Liquidation Value in such amount (each such increase is referred to as
          a "Liquidation Accretion Dividend"). All dividends shall accrue
          quarterly in arrears and shall compound on each Dividend Accrual Date,
          commencing on the first Dividend Accrual Date after the date of
          issuance of the applicable shares of Series A Preferred Stock. The
          Board of Directors shall declare and pay such accrued dividends on
          each Dividend Payment Date and the Corporation shall take all further
          actions necessary to cause such dividend to be paid to the Holders in
          the form and manner prescribed herein. Notwithstanding the foregoing,
          upon the first date of the consummation of a Business Combination, or
          an Optional Redemption by the Corporation pursuant to Section 6(a),
          the Corporation shall pay, and the Holders of outstanding shares of
          Series A Preferred Stock shall be entitled to receive, a dividend on
          each share of Series A Preferred Stock in the form of an aggregate
          increase in the Liquidation Value in an amount equal to the amount by
          which the Liquidation Value would have increased pursuant to this
          Section 3(a)(i) if such Holder had held such shares of Series A
          Preferred Stock, until the first Dividend Payment Date on or following
          the fifth anniversary of the Purchase Date.

               (ii) Cash Dividends.  After the fifth anniversary of the Purchase
          Date, the Corporation shall pay, and the Holders of outstanding shares
          of Series A Preferred Stock shall be entitled to receive, when, as and
          if declared by the Board of Directors, out of funds legally available
          therefor, cumulative dividends on each share of Series A Preferred
          Stock at a rate per annum equal to three percent (3.00%) of the
          Liquidation Value per share of Series A Preferred Stock, accruable
          quarterly on each of the Dividend Accrual Dates, payable only in cash;
          provided, however, that after the twentieth anniversary of the
          Purchase Date, the Corporation shall pay, and the Holders of
          outstanding shares of Series A Preferred Stock shall be entitled to
          receive, when, as and if declared by the Board of Directors, out of
          funds legally available therefor, cumulative dividends on each share
          of Series A Preferred Stock at a rate per annum equal to 8% of the
          Liquidation Value per share of Series A Preferred Stock, accruable
          quarterly on each of the Dividend Accrual Dates, payable only in cash,
          which rate shall increase by 200 basis points on each anniversary of
          the Closing Date thereafter, but not to exceed a maximum rate of 12%.
          All cash dividends shall be cumulative, whether or not declared, on a
          daily basis from the fifth anniversary of the 

                                       2
<PAGE>
 
          Purchase Date or the date of issuance, whichever is later, and shall
          accrue quarterly in arrears on each Dividend Accrual Date, commencing
          on the first Dividend Accrual Date after the fifth anniversary of the
          Purchase Date or the date of issuance, whichever is later. The Board
          of Directors shall declare and pay such accrued dividends at such time
          and to the extent permitted by law.

               (iii)  General Provisions.  Each distribution in the form of a
          cash dividend shall be payable to Holders of record as they appear on
          the stock books of the Corporation on such record date, not less than
          10 nor more than 60 days preceding the relevant Dividend Payment Date,
          as shall be fixed by the Board of Directors of the Corporation. For
          any period during which any share of Series A Preferred Stock is
          outstanding less than a full quarterly dividend period ending on a
          Dividend Accrual Date, the dividends payable shall be computed on the
          basis of a 360 day year consisting of twelve 30-day months and the
          actual number of days elapsed in the period for which the dividends
          are payable. If any Dividend Payment Date for a dividend payable in
          cash occurs on a day that is not a Business Day, any accrued dividends
          otherwise payable on such Dividend Payment Date shall be paid on the
          next succeeding Business Day.

          (b)  Certain Other Non-Cash Distributions. If the Corporation shall at
               ------------------------------------    
     any time, or from time to time, after the Purchase Date, declare, order,
     pay or make a dividend or other distribution (including, without
     limitation, any distribution or issuance of stock or other securities or
     property or rights or warrants to subscribe for securities of the
     Corporation or any of its Subsidiaries by way of dividend or spinoff or
     rights to purchase Common Stock or other Junior Securities) on its Common
     Stock, other than (i) dividends payable in cash in an aggregate amount in
     any fiscal year which, when declared, are not expected to exceed the net
     income of the Corporation during such year from continuing operations
     before extraordinary items, as determined in accordance with generally
     accepted accounting principles consistently applied in accordance with past
     practice, or (ii) any dividend or distribution described in Section
     5(c)(i), Section 5(c)(ii) or Section 5(c)(iii), then, and in each such case
     (a "Triggering Distribution"), each Holder of shares of Series A Preferred
     Stock shall be entitled to receive from the Corporation, with respect to
     the shares of Series A Preferred Stock held by such Holder, the same
     dividend or distribution that such Holder would have received if
     immediately prior to the earlier of such Triggering Distribution or any
     record date therefor (i) a Business Combination had occurred causing the
     last sentence of Section 3(a)(i) to be effected, and (ii) such Holder
     converted all of such Holder's shares of Series A Preferred Stock into
     shares of Common Stock.  Any such dividend, distribution or issuance shall
     be declared, ordered, paid or made on the Series A Preferred Stock at the
     same time such dividend, distribution or issuance is declared, ordered,
     paid or made on the Common Stock.

          (c)  Limitation on Dividends and Other Distributions.  Unless full
               -----------------------------------------------              
     cumulative dividends, if any, accrued on all outstanding shares of the
     Series A Preferred Stock have been or contemporaneously are declared and
     paid for all periods prior to and ending on the most recent Dividend
     Accrual Date, no dividend shall be declared or paid or set aside for
     payment 

                                       3
<PAGE>
 
     or other distribution declared or made upon the Junior Securities (other
     than a dividend or distribution paid solely in shares of, or warrants,
     rights or options solely exercisable for or convertible into, Junior
     Securities), nor shall any Junior Securities be redeemed, purchased or
     otherwise acquired for any consideration, nor may any moneys be paid to or
     made available for a sinking fund for the redemption of any shares of any
     such securities, by the Corporation (other than redemptions and purchases
     pursuant to or in accordance with agreements between the Corporation and
     its or its subsidiaries' directors, officers and key employees), except by
     conversion into or exchange for Junior Securities.

     4.   Liquidation Preference.
          ---------------------- 

          (a)  In the event of any voluntary or involuntary liquidation,
     dissolution or winding up of the Corporation ("Liquidation Event"), the
     Holders of Series A Preferred Stock then outstanding shall be entitled to
     receive, prior and in preference to any distribution of any of the assets
     of the Corporation to the holders of Common Stock and other Junior
     Securities by reason of their ownership thereof, an amount per share equal
     to the sum of (i) the average of the Closing Price per share of Common
     Stock for the 30 Trading Days immediately preceding the Purchase Date (the
     "Average Stock Price") for each outstanding share of Series A Preferred
     Stock, (ii) the amount of all Liquidation Accretion Dividends that have
     been paid pursuant to Section 3(a)(i) (including an amount equal to a
     prorated dividend pursuant to Section 3(a)(i) for the period from the
     Dividend Accrual Date immediately preceding the date of the Liquidation
     Event through the date of the Liquidation Event), and (iii) all
     accumulations of accrued but unpaid dividends payable in cash pursuant to
     Section 3(a)(ii) on each share of Series A Preferred Stock (including an
     amount equal to a prorated dividend pursuant to Section 3(a)(ii) for the
     period from the Dividend Accrual Date immediately prior to the receipt of
     such sum to the date of receipt of such sum), with the sum of the amounts
     referred to in clauses (i), (ii) and (iii) referred to herein as the
     "Liquidation Value".  The schedule of (i) the amount of the applicable
     Liquidation Accretion Dividend for each Share of Series A Preferred Stock
     for each Dividend Payment Date therefor, and (ii) the cumulative amount of
     the Liquidation Value for each Share of Series A Preferred Stock, as of
     each Dividend Payment Date, is as follows:

<TABLE>  
<CAPTION>
                            Amount of Applicable Quarterly Liquidation    
Dividend Payment Date for     Accretion Dividend for Each Share of          Cumulative Liquidation Value for    
        Quarter                      Series A Preferred Stock            Each Share of Series A Preferred Stock 
- -------------------------  --------------------------------------------  -------------------------------------- 
<S>                        <C>                                           <C>                                    
           1             
           2             
           3             
           4             
           5             
           6             
           7             
           8             
           9             
          10             
</TABLE> 

                                       4
<PAGE>
 
<TABLE>  
<CAPTION>
                            Amount of Applicable Quarterly Liquidation    
Dividend Payment Date for     Accretion Dividend for Each Share of          Cumulative Liquidation Value for   
        Quarter                      Series A Preferred Stock            Each Share of Series A Preferred Stock
- -------------------------  --------------------------------------------  --------------------------------------
<S>                        <C>                                           <C>                                    
          11
          12
          13
          14
          15
          16
          17
          18
          19
          20
</TABLE>

          If upon the occurrence of such Liquidation Event, the assets and funds
     are not sufficient to pay in full the liquidation payments payable to the
     Holders of the Series A Preferred Stock, then the Holders of outstanding
     shares of Series A Preferred Stock shall share ratably in such distribution
     of assets.  Except as provided in this Section 4(a), Holders of Series A
     Preferred Stock shall not be entitled to any additional distribution upon
     the occurrence of a Liquidation Event.

          (b)  After the distribution described in Section 4 (a) has been paid,
     the remaining assets of the Corporation available for distribution to
     shareholders shall be distributed among the holders of Junior Securities in
     accordance with their respective rights thereto.

          (c)  Neither the consolidation, merger, Business Combination or any
     other form of business combination of the Corporation with or into any
     other person or entity, nor the sale, lease, exchange, conveyance or
     disposition of all or substantially all of the assets of the Corporation to
     persons or entities other than the holders of Junior Securities shall be
     deemed to be a Liquidation Event for purposes of this Section 4.

     5.   Conversion.  The Holders of the Series A Preferred Stock shall have
          ----------                                                         
conversion rights as follows (the "Conversion Rights"):

          (a)  Optional Conversion Rights and Automatic Conversion.
               --------------------------------------------------- 

               (i)  Each share of Series A Preferred Stock shall be convertible,
          at the option of the Holder thereof, at any time after the first
          anniversary of the Purchase Date, at the office of the Corporation or
          any transfer agent for the Series A Preferred Stock, into such number
          of validly issued, fully paid and nonassessable shares of Common
          Stock, free and clear of all pledges, claims, liens, charges,
          encumbrances and security interests of any kind or nature whatsoever,
          as is determined by dividing the Liquidation Value by the Conversion
          Price at the time in effect for such share; provided, however, that,
          notwithstanding any other provision hereof to the contrary, conversion
          of all outstanding shares of Series A Preferred Stock shall be
          required in 

                                       5
<PAGE>
 
          the event of consummation of a Business Combination. The Conversion
          Price per share for shares of Series A Preferred Stock shall be (i)
          for the period from the Purchase Date through the Dividend Accrual
          Date immediately after the fifth anniversary of the Purchase Date, the
          product of (A) the Average Stock Price, times (B) 116.118%, and (ii)
          thereafter, the Conversion Price then in effect shall be increased at
          a rate per annum equal to six percent (6%) thereof, accruable
          quarterly, and in each case the Conversion Price shall be subject to
          adjustment, from time to time as set forth in Section 5(c).

               (ii)  Upon conversion of any Series A Preferred Stock, payment
          shall be made for (A) dividends under Section 3(a)(i) on each
          converted share of Series A Preferred Stock in an amount equal to a
          prorated Liquidation Accretion Dividend for the period from the
          Dividend Accrual Date immediately prior to the date of conversion to
          such conversion date, and (B) unpaid dividends under Section 3(b)
          resulting from events described therein and occurring prior to the
          date of conversion.

          (b)  Mechanics of Conversion.  If the Holder of shares of Series A
               -----------------------                                      
     Preferred Stock desires to exercise such right of conversion, such Holder
     shall give written notice to the Corporation (the "Conversion Notice") of
     that Holder's election to convert a stated whole number of shares of Series
     A Preferred Stock (the "Conversion Shares") into shares of Common Stock,
     and surrender to the Corporation, at its principal office or at such other
     office or agency maintained by the Corporation for such purpose, such
     Holder's certificate or certificates evidencing such Conversion Shares. The
     Conversion Notice shall also contain a statement of the name or names (with
     addresses) in which the certificate or certificates for Common Stock shall
     be issued. Notwithstanding the foregoing, the Corporation shall not be
     required to issue any certificates to any person other than the Holder
     thereof unless the Corporation has obtained reasonable assurance that such
     transaction is exempt from the registration requirements of, or is covered
     by an effective registration statement under, the Securities Act of 1933,
     as amended (the "Act"), and all applicable state securities laws,
     including, if necessary in the reasonable judgment of the Corporation or
     its legal counsel, receipt of an opinion to such effect from counsel
     reasonably satisfactory to the Corporation. In no event would such opinion
     be required if the shares of Common Stock could, upon conversion, be resold
     pursuant to Rule 144 or Rule 144A under the Act. As promptly as
     practicable, and in any event within five business days, after the receipt
     of the Conversion Notice and the surrender of the certificate or
     certificates representing the Conversion Shares, the Corporation shall
     issue and deliver, or cause to be delivered, to the Holder of the
     Conversion Shares or his nominee or nominees, (i) a certificate or
     certificates for the number of shares of Common Stock issuable upon the
     conversion of such Conversion Shares and (ii) if less than the full number
     of shares of Series A Preferred Stock evidenced by the surrendered
     certificate or certificates are being converted, a new certificate or
     certificates, of like tenor, evidencing the number of shares evidenced by
     such surrendered certificate or certificates less the number of Conversion
     Shares. Such conversion shall be deemed to have been effected as of the
     close of business on the date the Corporation received the Conversion
     Notice and the certificate or certificates representing the Conversion
     Shares, and the person 

                                       6
<PAGE>
 
     or persons entitled to receive the shares of Common Stock issuable upon
     conversion shall be treated for all purposes as the holder or holders of
     record of such shares of Common Stock as of the close of business on such
     date, provided, however, that if such conversion by a Holder of Series A
     Preferred Stock would give rise to the waiting period of the HSR Act, such
     conversion shall not be effective and shall be contingent upon (i) the
     expiration or termination of such waiting period, and (ii) the absence of
     any action taken or instituted by the Department of Justice, the Federal
     Trade Commission or any other governmental entity by the expiration or
     termination of such waiting period to delay, enjoin or place conditions on
     such conversion.

          (c)  Conversion Price Adjustments of Preferred Stock.
               ----------------------------------------------- 

               (i)    If the Corporation should at any time or from time to time
          after the Purchase Date fix a record date for the effectuation of a
          split or subdivision of the outstanding shares of Common Stock or the
          determination of holders of Common Stock entitled to receive a
          dividend or other distribution payable in additional shares of Common
          Stock, then, as of such record date (or, if no record date is fixed,
          as of the close of business on the date on which the Board of
          Directors adopts the resolution relating to such dividend,
          distribution, split or subdivision), the Conversion Price shall be
          decreased to equal the product of the Conversion Price in effect
          immediately prior to such date multiplied by a fraction, the numerator
          of which shall be the number of shares of Common Stock outstanding
          immediately prior thereto and the denominator of which shall be the
          number of shares of Common Stock outstanding immediately thereafter.

               (ii)   If the number of shares of Common Stock outstanding at any
          time or from time to time after the Purchase Date is decreased by a
          combination of the outstanding shares of Common Stock, then following
          such combination, the Conversion Price shall be increased to equal the
          product of the Conversion Price in effect immediately prior thereto
          multiplied by a fraction, the numerator of which shall be the number
          of shares of Common Stock outstanding immediately prior thereto and
          the denominator of which shall be the number of shares of Common Stock
          outstanding immediately thereafter.  So long as any shares of Series A
          Preferred Stock are outstanding, the Corporation shall not combine any
          shares of Common Stock unless it likewise combines all shares of
          Common Stock.

               (iii)  If the Corporation shall at any time and from time to time
          after the Purchase Date issue rights or warrants to all holders of the
          Common Stock entitling such holders to subscribe for or purchase
          Common Stock at a price per share less than the Current Market Price
          per share of the Common Stock on the record date for the determination
          of stockholders entitled to receive such rights or warrants, then, and
          in each such case, the number of shares of Common Stock into which
          each share of Series A Preferred Stock is convertible shall be
          adjusted so that the holder of each share thereof shall be entitled to
          receive, upon the conversion thereof, the number of 

                                       7
<PAGE>
 
          shares of Common Stock determined by multiplying the number of shares
          of Common Stock into which such share was convertible on the day
          immediately prior to such record date by a fraction, (A) the numerator
          of which is the sum of (1) the number of shares of Common Stock
          outstanding on such record date and (2) the number of additional
          shares of Common Stock which such rights or warrants entitle holders
          of Common Stock to subscribe for or purchase ("Offered Shares"), and
          (B) the denominator of which is the sum of (1) the number of shares of
          Common Stock outstanding on the record date and (2) a fraction, (x)
          the numerator of which is the product of the number of Offered Shares
          multiplied by the subscription or purchase price of the Offered Shares
          and (y) the denominator of which is the Current Market Price per share
          of Common Stock on such record date. Such adjustment shall become
          effective immediately after such record date.

               (ii)  If the Corporation shall be a party to any transaction,
          including any capital reorganization, reclassification or
          recapitalization involving the Common Stock of the Corporation (other
          than (A) a transaction described in clauses (i) and (ii) of this
          Section 5(c) or in Section 3(b) or (B) a consummated Business
          Combination), or some other form of transaction (other than a
          consummated Business Combination) in which the previously outstanding
          shares of Common Stock shall be changed into or, pursuant to the
          operation of law or the terms of the transaction to which the
          Corporation is a party, exchanged, or would have been changed or
          exchanged as required by the Certificate of Incorporation if such
          Common Stock were outstanding, for different securities of the
          Corporation or common stock or other securities of another corporation
          or interests in a non-corporate entity (such other corporation or non-
          corporate entity is referred to herein as the "Surviving Entity") or
          other property (including cash) or any combination of the foregoing,
          then, as a condition to the consummation of such transaction, lawful
          and adequate provision shall be made whereby the Holders of the Series
          A Preferred Stock shall thereafter have the right to receive, in lieu
          of the shares of Common Stock of the Corporation immediately
          theretofore receivable with respect to the conversion of such shares
          of Series A Preferred Stock, such shares of stock or securities (such
          stock and securities are referred to herein as the "Surviving Entity
          Securities") or assets as would have been issued or payable with
          respect to or in exchange for the shares of Common Stock which such
          holders would have held had the shares of Series A Preferred Stock
          been converted immediately prior to such transaction.  In any such
          case, appropriate provisions shall be made with respect to the rights
          and interests of the Holders of the Series A Preferred Stock to the
          end that such conversion rights (including, without limitation,
          provisions for adjustment of the Conversion Price) shall thereafter be
          applicable, as nearly as may be practicable in relation to any shares
          of Surviving Entity Securities or assets thereafter deliverable upon
          the exercise thereof.

          (d)  Stock Transfer Taxes.  The issuance of stock certificates upon
               --------------------                                           
     the conversion of the Series A Preferred Stock shall be made without charge
     to the converting Holder for any tax in respect of such issuance.  The
     Corporation shall not, however, be required to pay 

                                       8
<PAGE>
 
     any tax which may be payable in respect of any transfer involved in the
     issuance and delivery of shares in any name other than that of the Holder
     of such shares of Series A Preferred Stock converted, and the Corporation
     shall not be required to issue or deliver any such stock certificate unless
     and until the person or persons requesting the issuance thereof shall have
     paid to the Corporation the amount of such tax, if any.

          (e)  No Fractional Shares: Certificate as to Adjustments.
               --------------------------------------------------- 

               (i)   No fractional shares shall be issued upon conversion of the
          Series A Preferred Stock, and the number of shares of Common Stock to
          be issued shall be rounded to the nearest whole share.

               (ii)  Upon the occurrence of each adjustment or readjustment of
          the Conversion Price of Series A Preferred Stock pursuant to this
          Section 5, the Corporation, at its expense, shall promptly compute
          such adjustment or readjustment in accordance with the terms hereof
          and prepare and furnish to each Holder of Series A Preferred Stock a
          certificate setting forth such adjustment or readjustment and showing
          in detail the facts upon which such adjustment or readjustment is
          based. The Corporation shall, upon the written request at any time of
          any Holder of Series A Preferred Stock, furnish or cause to be
          furnished to such Holder a like certificate setting forth (A) such
          adjustment and readjustment, (B) the Conversion Price at the time in
          effect, and (C) the number of shares of Common Stock and the amount,
          if any, of other property which at the time would be received upon the
          conversion of a share of Series A Preferred Stock.

          (f)  Notices of Record Date.  In the event of any taking by the
               ----------------------                                    
     Corporation of a record of the Holders of any class of securities for the
     purpose of determining the Holders thereof who are entitled to receive any
     dividend (other than a cash dividend or a Liquidation Accretion Dividend)
     or other distribution, any right or warrant to subscribe for, purchase or
     otherwise acquire any shares of stock or any class of any other securities
     or property, or to receive any other right (including, without limitation,
     making a dividend or other distribution of any rights under a stockholder
     rights plan (sometimes known as a "poison pill" plan), whether now existing
     or hereafter created), the Corporation shall mail to each Holder of Series
     A Preferred Stock, at least 20 days prior to the date specified therein, a
     notice specifying the date on which any such record is to be taken for the
     purpose of such dividend, distribution, right or warrant, and the amount
     and character of such dividend, distribution, right or warrant. The
     Corporation shall not issue such dividend, distribution, right or warrant
     described herein or in Section 5(c)(iii), or consummate any Business
     Combination, or any reorganization, reclassification or recapitalization
     described in Section 5(c)(iv), unless it provides the Holders of the Series
     A Preferred Stock at least 20 days advance written notice thereof.

          (g)  Reservation of Securities Issuable upon Conversion.  The
               --------------------------------------------------      
     Corporation shall at all times reserve and keep available out of its
     authorized but unissued shares of Common 

                                       9
<PAGE>
 
     Stock, solely for the purpose of effecting the conversion of the shares of
     the Series A Preferred Stock, free from any preemptive right or other
     obligation, such number of its shares of Common Stock as shall from time to
     time be sufficient to effect the conversion of all outstanding shares of
     the Series A Preferred Stock; and if at any time the number of authorized
     but unissued shares of Common Stock shall not be sufficient to effect the
     conversion of all then outstanding shares of the Series A Preferred Stock,
     in addition to such other remedies as shall be available to the Holder of
     such Series A Preferred Stock, the Corporation will take such corporate
     action as may be necessary to increase its authorized but unissued shares
     of Common Stock to such number of shares as shall be sufficient for such
     purposes. The Corporation shall prepare and shall use commercially
     reasonable efforts to obtain and keep in force such governmental or
     regulatory permits or other authorizations as may be required by law, and
     shall comply with all requirements as to registration, qualification or
     listing of the Common Stock in order to enable the Corporation to lawfully
     issue and deliver to each Holder of record of Series A Preferred Stock such
     number of shares of its Common Stock as shall from time to time be
     sufficient to effect the conversion of all Series A Preferred Stock then
     outstanding and convertible into shares of Common Stock, including, without
     limitation, compliance with the filing and waiting period requirements of
     the HSR Act.

          (h)  Notices.  Any notice required by the provisions of this Section 5
               -------                                                          
     to be given to the Holders of shares of Series A Preferred Stock shall only
     be effective upon receipt and may be given by personal delivery, U.S.
     certified mail, return receipt requested, or by a nationally recognized
     overnight delivery service (e.g., United Parcel Service or Federal
     Express), delivery or postage prepaid and addressed to each Holder of
     record at his address appearing on the books of this Corporation (and, in
     the case of any Holder that is a corporation ore other entity, to the
     attention of the President).

     6.   Redemption.
          ---------- 

          (a)  Optional Redemption. The Series A Preferred Stock may be redeemed
               -------------------  
     (subject to (i) the right of any or all shares of Series A Preferred Stock
     to be converted into Common Stock at any time prior to the Redemption Date
     (as defined in Section 6(b)),  and (ii) subject to the restrictions
     described in this Section 6(a) and the legal availability of funds
     therefor) at any time after the third anniversary of the Purchase Date, at
     the Corporation's option, in whole or in part, in the manner provided in
     Section 6(b), at a redemption price per share of Series A Preferred Stock
     (expressed as a percentage of the Liquidation Value, which includes the
     full accelerated amount of the Liquidation Accretion Dividends as
     prescribed by Section 3(a)(i)) set forth above), if redeemed during the 12-
     month period beginning on the anniversary date of the Purchase Date of each
     of the years set forth below:

                                       10
<PAGE>
 
<TABLE> 
<CAPTION> 
                    Year                 Percentage
                    ----                 ----------
                    <S>                  <C> 
                    2001                    103%
                    2002                    102%
                    2003                    101%
                    Thereafter              100%
</TABLE> 

     In the event a redemption of less than all of the outstanding shares of
     Series A Preferred Stock pursuant to this Section 6(a), the Corporation
     shall effect such redemption either prorata according to the number of
     shares held by each Holder of shares of Series A Preferred Stock, or by
     lot, in each case, as may be determined by the Corporation in its sole
     discretion.

          (b)  Procedures for Redemption.
               ------------------------- 

               (i)  At least 30 days and not more than 60 days prior to the date
          fixed for any redemption of the Series A Preferred Stock, written
          notice (the "Redemption Notice") shall be given by first-class mail,
          postage prepaid, to each Holder of record on the record date fixed for
          such redemption (the "Redemption Date") of the Series A Preferred
          Stock at such Holder's address as the same appears on the stock
          register of the Corporation, provided that no failure to give such
          notice nor any deficiency therein shall affect the validity of the
          procedure for the redemption of any shares of Series A Preferred Stock
          to be redeemed except as to the Holder or Holders to whom the
          Corporation has failed to give said notice or except as to the Holder
          or Holders whose notice was defective; provided, further, that the
          Corporation may withdraw such Redemption Notice and thereby have no
          obligation to consummate the redemption described therein at any time
          prior to the third day prior to the Redemption Date set forth therein
          by providing written notice of such withdrawal to each Holder who
          received such Redemption Notice.  The Redemption Notice shall state:

                    (1)  the redemption price;

                    (2)  whether all or less than all the outstanding shares of
               the Series A Preferred Stock are to be redeemed and the total
               number of shares of the Series A Preferred Stock being redeemed;

                    (3)  the number of shares of Series A Preferred stock held,
               as of the appropriate record date, by the Holder that the
               Corporation intends to redeem;

                    (4)  the Redemption Date;

                    (5)  that the Holder is to surrender to the Corporation, at
               the place or places where certificates for shares of Series A
               Preferred Stock are to be 

                                       11
<PAGE>
 
               surrendered for redemption, in the manner and at the price
               designated, Holder's certificate or certificates representing the
               shares of Series A Preferred Stock to be redeemed; and

                      (6)  that cash dividends on the shares of the Series A
               Preferred Stock to be redeemed shall cease to accrue on such
               Redemption Date unless the Corporation defaults in the payment of
               the redemption price.

               (ii)   Each Holder of Series A Preferred Stock shall surrender
          the certificate or certificates representing such shares of Series A
          Preferred Stock to the Corporation, duly endorsed, in the manner and
          at the place designated in the Redemption Notice and on the Redemption
          Date. The full redemption price for such shares of Series A Preferred
          Stock shall be payable in cash to the person whose name appears on
          such certificate or certificates as the owner thereof, and each
          surrendered certificate shall be canceled and retired. In the event
          that less than all of the shares represented by any such certificate
          are redeemed, a new certificate shall be issued representing the
          unredeemed shares.

               (iii)  Unless the Corporation defaults in the payment in full of
          the applicable redemption price, cash dividends on the shares of
          Series A Preferred Stock called for redemption shall cease to accrue
          and accumulate on the Redemption Date, and the Holders of such
          redeemed shares shall cease to have any further rights with respect
          thereto from and after the Redemption Date, other than the right to
          receive the redemption price on the Redemption Date, without interest.

     7.   Voting Rights.  (a)  The Holders of shares of Series A Preferred Stock
          -------------                                                         
shall not be entitled to any voting rights, except as hereinafter provided in
Section 7(b) and Section 8 or as otherwise provided by law or by that certain
Governance Agreement between the Corporation, Steven, Steven L.P. and Flipper,
Inc., a Delaware corporation, dated the Purchase Date (the "Governance
Agreement"). Notwithstanding any other provision of this Section 7 or Section 8,
the Holders of shares of Series A Preferred Stock shall not be entitled to any
voting rights hereunder with respect to a Business Combination which is not a
Discriminatory Transaction (as defined in the Governance Agreement).

          (b)  Election of Directors.
               --------------------- 

               (i)    Except as otherwise provided herein, at all times from and
          after the Purchase Date, the Holders of shares of Series A Preferred
          Stock shall have the right to elect two (2) of the directors of the
          Corporation (the "Investor Directors").

               (ii)   Notwithstanding anything in the Section 7(b)(i) to the
          contrary, if at the end of any three consecutive months, (A) Steven's
          Percentage Interest shall be less than the Higher Threshold, the
          Holders shall promptly take action to cause one of its Investor
          Directors to resign from the Board, or (B) Steven's Percentage
          Interest shall 

                                       12
<PAGE>
 
          be less than the Lower Threshold, the Holders shall promptly take
          action to cause any and all remaining Investor Directors to resign
          from the Board; and, upon resignation of each respective Investor
          Director, the Holders of shares of Series A Preferred Stock shall
          forever cease to have any voting rights with respect to the election
          of that director.

               (iii) Except as otherwise provided in Section 7(b)(ii), the
          Holders of Series A Preferred Stock shall have the right to elect any
          replacement for an Investor Director designated for nomination or
          nominated in accordance with this Section 7(b) upon the death,
          resignation, retirement, disqualification or removal from office for
          other cause of such Director.

     8.   Protective Provisions.
          --------------------- 

          (a)  Class Voting.  So long as shares of Series A Preferred Stock are
               ------------                                                    
     outstanding, this Corporation shall not, without first obtaining the
     approval (by vote or written consent) of the Holders of sixty-six and two-
     thirds percent (66 2/3%) of the then outstanding shares of Series A
     Preferred Stock (voting as a class):

               (i)   alter or change the rights, preferences or privileges of
          the shares of Series A Preferred Stock so as to affect adversely the
          shares;

               (ii)  increase the number of authorized shares of Series A
          Preferred Stock, or create any new series of stock or any other
          securities convertible into equity securities of the Corporation
          having a preference over, or being on a parity with, the Series A
          Preferred Stock with respect to voting, dividends, distribution of
          assets upon liquidation, dissolution, winding up or otherwise or
          conversion rights;

               (iii) amend the Certificate of Incorporation, Bylaws or other
          organizational documents of the Corporation or take any action or
          enter into any other agreements which, prohibit or materially conflict
          with the Corporation's obligations hereunder with respect to the
          Holders of Series A Preferred Stock; or

               (iv)  engage in a Liquidation Event.

          (b)  No Impairment.  The Corporation will not, by amendment of its
               -------------                                                 
     Certificate of Incorporation, Bylaws or other organizational documents or
     through any reorganization, reclassification, recapitalization, Liquidation
     Event, issue or sale of securities or any other voluntary action by the
     Corporation, avoid or seek to avoid the observance or performance of any of
     the terms to be observed or performed hereunder by the Corporation but will
     at all times in good faith assist in the carrying out of all the provisions
     of this Certificate of Designation, and in the taking of all such action as
     may be necessary or appropriate in order to protect the conversion and
     other rights of the Holders of the Series A Preferred Stock against
     impairment; provided, however, that the protection provided by this Section
     8(b) shall 

                                      13
<PAGE>
 
     not apply to a Business Combination in which (i) neither the Liquidation
     Value nor the Conversion Price of the Series A Preferred Stock is changed,
     and (ii) the Holders of Series A Preferred Stock shall be entitled to
     receive consideration at the same time, and in the same amount and in the
     same form per share, as if each share of Series A Preferred Stock had been
     converted into Common Stock immediately prior to such Business Combination,
     after giving effect to the acceleration of the full amount of all of the
     Liquidation Accretion Dividends as contemplated by the last sentence of
     Section 3(a)(i). Without limiting the foregoing, but subject to the proviso
     in the immediately preceding sentence, the Corporation will not effect any
     transaction described in this Section 8(b), the result of which is to
     adversely affect any of the rights of Holders of Common Stock relative to
     the rights of Holders of any other securities other than the Series A
     Preferred Stock.

          (c)  Tolling of Automatic Conversion and Other Time periods for HSR
               --------------------------------------------------------------
     Compliance.  Notwithstanding any other provision of this Certificate of
     ----------                                                             
     Designation, until such time as the filing and waiting period requirements
     of the HSR Act relating to the conversion of any of the shares of Series A
     Preferred Stock pursuant to Section 5 shall have been complied with, if
     any, and there shall be no action taken or instituted by the United States
     Department of Justice or the United States Federal Trade Commission to
     delay, enjoin or impose conditions on such conversion, and such waiting
     period applicable under the HSR Act shall have expired or received early
     termination: (i) there shall be no automatic conversion of the Series A
     Preferred Stock into Common Stock, (ii) the Redemption Date shall be
     automatically extended for a period of five Business Days beyond the latest
     date contemplated by the first sentence of Section 6(b)(i) (as so extended,
     the "Extended Redemption Date") and each Holder of shares of Series A
     Preferred Stock shall be entitled to convert any or all of such shares into
     Common Stock prior to the Extended Redemption Date, and (iii) each other
     date or event that would otherwise impair any right to convert the Series A
     Preferred Stock into Common Stock or otherwise impair the rights of the
     Series A Preferred Stock shall be tolled until 10 days after the expiration
     or early termination of all waiting periods under the HSR Act; provided,
     however, that no cash dividends shall accrue during the period after the
     date originally set for redemption pursuant to Section 6.  Any Holder who
     is required to comply with the filing and waiting period requirements of
     the HSR Act with respect to the conversion of any shares of Series A
     Preferred Stock shall use commercially reasonable efforts to cause such
     filing to be made as soon as practicable after such Holder has provided
     notice of its intention to convert such shares of Series A Preferred Stock
     and to diligently and in good faith pursue  expiration or termination of
     the waiting period of the HRS Act.

     9.   Stockholder Rights Plan.  Notwithstanding any other provision of this
          -----------------------                                              
Certificate of Designation to the contrary, if the Corporation shall adopt a
stockholders rights plan (sometimes known as a "poison pill" plan), and shall
declare, order, pay or make a dividend or other distribution of rights
thereunder with respect to the Common Stock (whether or not separate from the
Common Stock), each Holder of shares of Series A Preferred Stock shall be
entitled to receive from the Corporation, upon conversion of such shares of
Series A Preferred Stock into Common Stock pursuant to Section 5, all of the
rights distributed under such plan (but without any limitation or restriction or
the exercise of such rights that are not also applicable to holders of Common
Stock) 

                                       14
<PAGE>
 
fully and to the same extent as if immediately prior to the earlier of such
distribution or any record date therefor (i) the Liquidation Value of such
shares of Series A Preferred Stock had then increased by the full amount of all
Liquidation Accretion Dividends payable as if such shares of Series A Preferred
Stock had been held through and including the first Dividend Payment Date on or
following the fifth anniversary of the Purchase Date, and (ii) such Holder had
then converted all of such Holder's shares of Series A Preferred Stock into
shares of Common Stock. The preceding sentence shall provide the exclusive
protection under this Certificate of Designation to the Holders of the Series A
Preferred Stock (including any adjustments that would otherwise be required by
Section 5(c)) with respect to the subject matter of the immediately preceding
sentence.

     10.  Status of Converted Stock. In the event any shares of Series A
          -------------------------                                     
Preferred Stock shall be converted pursuant to Section 5 hereof, the shares so
converted shall be canceled and thereupon restored to the status of authorized
but unissued Preferred Stock undesignated as to class or series.

     11.  Certain Definitions.  For purposes of this Certificate of Designation,
          -------------------                                                   
Preferences and Rights of Series A Preferred Stock, unless the context otherwise
requires:

               (i)   "Affiliate" and "Associate" shall have the respective
          meanings ascribed to such terms in Rule 12b-2 under the Exchange Act
          as such Rule is in effect on the Purchase Date.

               (ii)  A Person shall be deemed to "beneficially own," any
          securities:

                    (A)  which such Person or any of such Person's Affiliates or
               Associates, directly or indirectly, has the right to acquire
               (whether such right is exercisable immediately or only after the
               passage of time) pursuant to any agreement, arrangement or
               understanding (whether or not in writing) or upon the exercise of
               conversion rights, exchange rights, rights, warrants or options,
               or otherwise;

                    (B)  which such Person or any of such Person's Affiliates or
               Associates, directly or indirectly, has the right to vote or
               dispose of or has "beneficial ownership" of (as determined
               pursuant to Rule 13d-3 under the Exchange Act as such Rule is in
               effect on the date of this Agreement), including pursuant to any
               agreement, arrangement or understanding, whether or not in
               writing; provided, however, that a Person shall not be deemed the
                        --------  -------                                       
               "Beneficial Owner" of, or to "beneficially own," any security
               under this subparagraph (B) as a result of an agreement,
               arrangement or understanding to vote such security if such
               agreement, arrangement or understanding arises solely from a
               revocable proxy given in response to a public proxy or consent
               solicitation made by the Corporation pursuant to, and in
               accordance with, the applicable provisions of the General Rules
               and Regulations under the Exchange Act; or

                                       15
<PAGE>
 
                    (C)  which are beneficially owned, directly or indirectly,
               by any other Person (or any Affiliate or Associate thereof) with
               which such Person (or any of such Person's Affiliates or
               Associates) has any agreement, arrangement or understanding
               (whether or not in writing), for the purpose of acquiring,
               holding, voting (except pursuant to a revocable proxy as
               described in the proviso to subparagraph (B)) or disposing of any
               voting securities of the Corporation; provided, however, that
                                                     --------  -------      
               nothing in this subparagraph (C) shall cause a person engaged in
               business as an underwriter of securities to be the "Beneficial
               Owner" of, or to "beneficially own," any securities acquired
               through such person's participation in good faith in a firm
               commitment underwriting under the Act until the expiration of 40
               days after the date of such acquisition.

               (iii)  "Business Combination" shall have the meaning set forth in
          the Governance Agreement.

               (iv)   "Business Day" means any day other than a Saturday, Sunday
          or a day on which banking institutions in the State of New York are
          authorized or obligated by law or executive order to close.

               (v)    "Closing Price" per share of Common Stock on any date
          shall be the last sale price, regular way, or, in case no such sale
          takes place on such day, the average of the closing bid and asked
          prices, regular way, in either case as reported in the principal
          consolidated transaction reporting system with respect to securities
          listed or admitted to trading on the New York Stock Exchange or, if
          the Common Stock is not listed or admitted to trading on the New York
          Stock Exchange, as reported in the principal consolidated transaction
          reporting system with respect to securities listed on the principal
          national securities exchange on which the Common Stock is listed or
          admitted to trading or, if the Common Stock is not listed or admitted
          to trading on any national securities exchange, if such shares of
          Common Stock are not listed or admitted to trading on such exchange,
          as reported on the Nasdaq National Market, or if not quoted on the
          Nasdaq National Market, the last quoted sale price or, if not so
          quoted, the average of the high bid and low asked prices in the over-
          the-counter market, as reported by Nasdaq or such other system then in
          use, or, if on any such date the Common Stock is not quoted by any
          such organization, the average of the closing bid and asked prices as
          furnished by a professional market maker making a market in the Common
          Stock selected by the Board of Directors. If the Common Stock is not
          publicly held or so listed or publicly traded, "Closing Price" shall
          mean the Fair Market Value per share as determined in good faith by
          the Board of Directors of the Corporation.

               (vi)   "Common Stock" shall mean the Corporation's authorized
          Common Stock, $.01 par value, as constituted on the Purchase Date, and
          any stock into which such Common Stock may thereafter be changed or
          reclassified, including, without 

                                       16
<PAGE>
 
          limitation, any Surviving Entity Securities; provided, however, that
          if Common Stock is changed or reclassified into more than one class or
          series of equity securities, the term "Common Stock" shall refer to
          the class or series of such equity securities having the greatest
          general voting power in the election of directors of the Corporation
          as compared to the other classes or series of equity securities.

               (vii)  "Corporation" means Dolphin, Inc., a Delaware corporation,
          together with any successors of the Corporation, whether by merger,
          consolidation or otherwise, including without limitation a Surviving
          Entity.

               (viii) "Current Market Price" per share of Common Stock on any
          date shall be deemed to be the Closing Price per share of Common Stock
          on the Trading Day immediately prior to such date.

               (ix)   "Dividend Accrual Date" shall mean each anniversary date
          of the Purchase Date and the dates three months, six months and nine
          months of each year thereafter, beginning with the date three months
          after the Purchase Date, or at such additional times and for such
          interim periods, if any, as determined by the Board of Directors.

               (x)    "Dividend Payment Date" shall mean with respect to
          dividends under Section 3(a)(i), the Dividend Accrual Date, and with
          respect to dividends under Section 3(a)(ii), the date established by
          the Board of Directors for the payment of all or part of the accrued
          dividends on the Series A Preferred Stock.

               (xi)   "Equity Security" means (i) any Common Stock, (ii) any
          debt or equity securities of the Corporation convertible into or
          exchangeable for Common Stock or other Equity Securities of the
          Corporation that grant the right to vote generally in the election of
          directors ("Voting Equity Securities"), (iii) any options, rights or
          warrants (or any other similar securities) issued by the Corporation
          to acquire Common Stock or other Voting Equity Securities or (iv) any
          security issuable in connection with any stock split, stock dividend,
          recapitalization or other similar transaction in which securities are
          issued on a proportionate basis to all holders of a class of Equity
          Securities.

               (xii)  "Exchange Act" shall mean the Securities Exchange Act of
          1934, as amended and in effect on the Purchase Date.

               (xiii) "Fair Market Value" means the amount which a willing buyer
          would pay a willing seller in an arm's-length transaction.

               (xiv)  "Higher Threshold" shall have the meaning set forth in the
          Governance Agreement.

                                       17
<PAGE>
 
               (xv)    "HSR Act" means the Hart-Scott-Rodino Antitrust
          Improvements Act of 1976, as amended, and the regulations promulgated
          thereunder.

               (xvi)   "Lower Threshold" shall have the meaning set forth in the
          Governance Agreement.

               (xvii)  "Person" means any individual, firm, corporation,
          partnership, limited liability company or other entity, and shall
          include any successor (by merger or otherwise) of such entity.

               (xviii) "Purchase Date" means the date of the Closing as defined
          in the Governance Agreement.

               (xix)   "Steven's Percentage Interest" shall have the meaning set
          forth in the Governance Agreement.

               (xx)    "Subsidiary" of any person means any corporation or other
          entity of which a majority of the voting power of the voting equity
          securities or equity interest is owned, directly or indirectly, by
          such person.

               (xxi)   "Trading Day" means a day on which the principal national
          securities exchange Nasdaq or other securities market on which the
          Common Stock is listed or admitted to trading is open for the
          transaction of business or, if the Common Stock is not listed or
          admitted to trading on any national securities exchange, any day other
          than a Saturday, Sunday, or a day on which banking institutions in the
          State of New York are authorized or obligated by law or executive
          order to close.

     IN WITNESS WHEREOF, the Corporation has caused the foregoing certificate to
be signed on ________________________, 1998.


                                    DOLPHIN, INC.



                                    By: ________________________________________
                                         Charles G. Betty, President

                                       18

<PAGE>

                                                                 EXHIBIT (C)(8)
 
                      AGREEMENT TO VOTE AND TENDER STOCK


         THIS AGREEMENT TO VOTE AND TENDER STOCK, dated as of February 10, 1998
(the "Agreement"), among the Granting Stockholders named on Schedule A hereto,
Sprint Corporation, a Kansas corporation ("Sprint") and Sprint Communications
Company L.P., a Delaware limited partnership ("Sprint L.P.") (the Granting
Stockholders, Sprint and Sprint L.P. are collectively referred to herein as the
"Parties" and individually as a "Party").

         WHEREAS, the respective Boards of Directors of Sprint and EarthLink
Network Inc., a Delaware corporation (the "Company") have determined to enter
into a strategic relationship in the area of Internet access and related
services and Sprint will make investments in the Newco, Inc., a Delaware
corporation ("Newco") and the Company in connection with the Merger of Newco
Sub, Inc., a Delaware corporation and wholly-owned subsidiary of Newco ("Newco
Sub") and the Company in order to enhance the capabilities for growth and
financial and strategic success;

         WHEREAS, Sprint, Sprint L.P., the Company, Newco and Newco Sub have
entered into an Investment Agreement as of the date hereof (the "Investment
Agreement") contemplating that strategic alliance and addressing the terms and
conditions of such investment and related transactions;

         WHEREAS, a condition to Sprint's obligations under the Investment
Agreement is that each of the Granting Stockholders execute and perform this
Agreement and grant an irrevocable proxy in the form attached hereto as Exhibit
A (the "Irrevocable Proxy");

         WHEREAS, Sprint proposes to make a tender offer (as it may be amended
from time to time as permitted under the Investment Agreement, with the
Company's consent if required hereby, the "Offer") to purchase 1,250,000 shares
of common stock, par value $.01 per share, of the Company (the "Common Stock"),
for an aggregate cash consideration of $56,250,000 and at a price per share of
Common Stock of $45 net to each seller in cash (such price, as may hereafter be
changed, the "Offer Price"), upon the terms and subject to the conditions set
forth in the Investment Agreement; and the Board of Directors of the Company has
approved the Offer and the other transactions contemplated in the Investment
Agreement and is recommending that the Company's stockholders who wish to
receive cash for their shares of Common Stock accept the Offer;

         WHEREAS, immediately following the closing of the Offer, Sprint L.P.
proposes to purchase 4,102,941 shares of Series A Convertible Preferred Stock,
par value $.01 per share of Newco (the "Convertible Preferred Stock") in
exchange for (i) an aggregate cash consideration of $23,750,000, (ii) the
assignment to Newco of 100% of the Sprint Internet Passport Subscribers, (iii)
entering enter into an agreement whereby Newco and the Company will utilize the
Sprint brand under specified terms and conditions Newco and Newco Sub will,
inter alia, have the right to use Sprint distribution channels under specified
terms and conditions, and (iv) entering into a 
<PAGE>
 
network agreement whereby Newco and the Company will utilize Sprint's long-
distance network under specified terms and conditions.

         WHEREAS, Sprint shall provide Newco and the Company, as co-borrowers,
with up to $25 million of Convertible Senior Debt financing (the "Convertible
Debt Financing") on or after the Closing, with such amount to increase to up to
$100 million over time, such indebtedness to be evidenced by one or more
Convertible Senior Promissory Note(s) (the "Convertible Notes");

         WHEREAS, the closing of the Contribution and the other transactions
referred to above other than the Offer shall take place concurrently with the
merger of Newco Sub into the Company (the "Merger") and the conversion of each
share of the Company's outstanding Common Stock into one share of Newco common
stock, par value $.01 per share ("Newco Common Stock") pursuant to the Merger,
in each case upon the terms and subject to the conditions set forth in the
Investment Agreement and/or the Ancillary Agreements (as defined below);

         WHEREAS, Section 2.02(c) of the Investment Agreement includes as a
condition to the obligations of Sprint and Sprint L.P. to consummate the
transactions contemplated by the Investment Agreement and the Ancillary
Agreements that the Granting Stockholders shall execute, deliver and fully
perform this Agreement and that the terms and conditions of this Agreement shall
have been otherwise satisfied in all material respects;

         WHEREAS, the Granting Stockholders desire to induce the parties to the
Investment Agreement to execute, deliver and perform such agreement and the
Ancillary Agreements and to satisfy the aforesaid condition to the Closing of
the Investment Agreement;

         WHEREAS, capitalized terms used herein shall have the meaning set forth
in the Investment Agreement unless otherwise defined herein.

         NOW, THEREFORE, in consideration of (i) the foregoing premises, (ii)
the benefits to be received equally by all stockholders of the Company upon the
execution, delivery and performance of the Investment Agreement and the
Ancillary Agreements, (iii) the interest of Sprint and Sprint L.P. in purchasing
shares of Common Stock from the Granting Stockholders and other stockholders of
the Company in the Offer, (iv) the representations, warranties, covenants and
agreements contained in this Agreement, the Investment Agreement and the
Ancillary Agreements, and (v) for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto,
intending to be legally bound, hereby agree as follows:

         1.     Agreement and Obligation to Tender. Each of the Granting
                ----------------------------------
Stockholders agrees to tender all of the shares of Common Stock which they own
of record or beneficially (within the meaning of Rule 13d-3 under the Exchange
Act as of the date hereof), which number of shares is set forth opposite the
Granting Stockholder's name on Schedule A attached hereto in the precise manner
in which such name it is set forth on the certificate evidencing the Shares (the
"Owned 

                                       2
<PAGE>
 
Shares"; which term shall include any and all other shares of capital stock or
securities or rights issued or issuable in respect thereof on or after the date
hereof), in accordance with the terms and subject to the conditions set forth in
the Offer to Purchase and the related Letter of Transmittal (which, together
with any amendments or supplements to such Offer to Purchase and Letter of
Transmittal, shall definitively constitute the Offer). The Granting Stockholders
understand and agree that the actual number of Owned Shares purchased by Sprint
will vary depending upon the total number of shares of Common Stock validly
tendered and not withdrawn at the expiration of the Offer and the obligation
imposed on Sprint by Rule 14d-8 under the Exchange Act to prorate such
purchases; provided, however, that Sprint shall not be obligated to purchase any
shares of Common Stock in the Offer unless all of the conditions to the Offer
have been satisfied or waived in accordance with the Investment Agreement.

         2.     Agreement and Obligation to Vote. (a) Each of the Granting
                --------------------------------
Stockholders agrees to cast, or cause to be cast, all of the votes represented
by the Owned Shares (which for this purpose shall also include all shares of
Newco Common Stock received upon conversion of the Owned Shares into Newco
Common Stock pursuant to the Merger) which such Granting Stockholder has the
right or power to vote, directly or indirectly, or has the right or power to
vote by holding a proxy to vote such shares or otherwise, in favor of (a) the
Merger, (b) the issuance and sale of the Convertible Preferred Stock, the
Convertible Notes and the Newco Common Stock issuable upon conversion of the
Convertible Preferred Stock and/or the Convertible Notes, in each case in
accordance with the Investment Agreement and the applicable Ancillary
Agreements, (c) the other transactions contemplated by the Investment Agreement
and the Ancillary Agreements, and (d) any related matter that must be approved
by the holders of Common Stock or Newco Common Stock in order for the
transactions contemplated by the Investment Agreement or any Ancillary Agreement
to be consummated.

         (b)   In order to ensure that the voting agreement set forth in Section
2(a) will be fulfilled, each of the Granting Stockholders agrees to grant, and
concurrently with the execution of this Agreement hereby grants, to Sprint
Corporation an Irrevocable Proxy, coupled with an interest, with respect to all
of the Owned Shares covered by the aforesaid voting agreement which the Granting
Stockholder is entitled to vote, for and in the name, place and stead of such
stockholder, at any annual or special meeting of the holders of Common Stock and
at any adjournment or postponement thereof, or pursuant to any consent in lieu
of a meeting, or otherwise for the matters described in Section 2(a). The
Irrevocable Proxy granted by each of the Granting Stockholders constitutes the
valid and effective irrevocable proxy, coupled with an interest, of each of the
Granting Stockholders in respect of the Owned Shares within the meaning of
Section 212(e) of the Delaware General Corporation Law; revokes any proxy or
proxies or powers of attorney heretofore given by any of the Granting
Stockholders in respect of the Shares; shall remain in full force and effect and
is and shall be irrevocable until the Closing of the Merger and the other
transactions contemplated by the Investment Agreement and the Ancillary
Agreements; and is coupled with an interest and an integral part of the benefits
and obligations of each of the Granting Stockholders and the rights and benefits
of Sprint and Sprint L.P.

         3.     Agreement Not to Dispose of Shares. Each Granting Stockholder
                ----------------------------------
hereby 

                                       3
<PAGE>
 
covenants and agrees as follows between the date hereof and the Closing (as
defined in the Investment Agreement):

                a.   The Granting Stockholders will not, and will not agree to,
         directly or indirectly, (i) sell, transfer, assign, pledge,
         hypothecate, cause to be redeemed or repurchased or otherwise dispose
         of any of the Owned Shares, (ii) grant any proxy, power of attorney or
         interest in or with respect to the Shares, or (iii) enter into a voting
         agreement with respect to the Owned Shares, in any such case prior to
         the Closing of the Merger and the other transactions contemplated by
         the Investment Agreement and the Ancillary Agreements.

                b.   The Granting Stockholders will cause the Company to have
         the certificates evidencing their shares bear substantially the
         following legend and to cause the Company to instruct its transfer
         agent to stop the transfer of any certificates bearing such legend that
         is not made in accordance with this Agreement:

                THE TRANSFER OF AND VOTING OF THE SHARES REPRESENTED BY THIS
                CERTIFICATE IS SUBJECT TO THE PRIOR RIGHTS AND LIMITATIONS
                IMPOSED BY THE AGREEMENT TO VOTE AND TENDER STOCK DATED FEBRUARY
                10, 1998 AMONG SPRINT CORPORATION, A KANSAS CORPORATION, SPRINT
                COMMUNICATIONS COMPANY L.P., AND CERTAIN GRANTING STOCKHOLDERS
                WHO ARE SIGNATORIES THERETO. A COPY OF SUCH AGREEMENT WILL BE
                FURNISHED BY THE COMPANY'S SECRETARY UPON WRITTEN REQUEST AND
                WITHOUT CHARGE.

         4.     Representations and Warranties. Each of the Granting
                ------------------------------
Stockholders severally represents and warrants to Sprint and Sprint L.P. as
follows:

                a.   Each Granting Stockholder that is an entity is a
         corporation, limited liability company or partnership that is duly
         organized, validly existing and in good standing under the laws of the
         jurisdiction in which it is incorporated or organized and has the power
         and authority to execute, deliver and perform this Agreement and to
         grant the Irrevocable Proxy. Each Granting Stockholder that is a
         natural person has the capacity and the full legal right to execute,
         deliver and perform this Agreement and to grant the Irrevocable Proxy.

                b.   This Agreement and each Irrevocable Proxy have been duly
         executed and delivered and constitute a valid and binding agreement or
         irrevocable proxy (coupled with an interest), respectively, and are
         enforceable in accordance with their respective terms, except to the
         extent that the enforcement of this Agreement or the Irrevocable Proxy
         may be limited by (i) bankruptcy, insolvency, reorganization,
         moratorium or other similar laws 

                                       4
<PAGE>
 
         now or hereafter in effect relating to creditors' rights generally, and
         (ii) general principles of equity regardless of whether enforceability
         is considered in a proceeding in equity or at law.

               c.    The execution and delivery of this Agreement and of the
         Irrevocable Proxies did not, and the performance thereof, without
         obtaining the consent of any third party will not, conflict with, or
         result in any violation of, or default (with or without notice or lapse
         of time, or both) under (i) to their knowledge, the certificate of
         incorporation or bylaws of the Company, (ii) any loan or credit
         agreement, note, bond, mortgage, indenture, lease or other agreement,
         instrument, permit or license applicable to the Granting Stockholder or
         the Owned Shares, or (iii) any Law applicable to the Granting
         Stockholders. No consent, approval, order or authorization of, or
         registration, declaration or filing with, any Governmental Entity or
         any party to a Contract is required by or with respect to the
         applicable Granting Stockholder or in connection with the execution and
         delivery of this Agreement or the applicable Irrevocable Proxy.

               d.    Each of the Owned Shares has been duly and validly issued,
         is fully paid and nonassessable, is free and clear of all Liens, and is
         not subject to (i) any preemptive rights, (ii) right of first refusal,
         (iii) right to purchase, acquire or vote, (iv) power of attorney, or
         (v) any other right.

               e.    Each Granting Stockholder has the sole power, right and
         authority to vote and to tender the Owned Shares in accordance with the
         terms of this Agreement and the Irrevocable Proxy.

         5.    Specific Performance. Each Granting Stockholder understands and
               --------------------
agrees that immediate irreparable damages for which there is no adequate remedy
at law would occur in the event that any provision of this Agreement and/or the
Irrevocable Proxy is not performed in accordance with the specific terms hereof
or thereof or is otherwise breached. Accordingly, it is agreed that in the event
of a failure by a Granting Stockholder to perform its obligations under this
Agreement and/or the Irrevocable Proxy, Sprint and Sprint L.P. shall each be
entitled to specific performance through injunctive relief to prevent breaches
of the provisions of this Agreement and/or the Irrevocable Proxy and to enforce
specifically the provisions of this Agreement and/or the Irrevocable Proxy in
any Action instituted in any court having competent jurisdiction, in addition to
any other remedy to which Sprint and Sprint L.P. may be entitled, at law or in
equity.

         6.    Term. This Agreement and the obligations hereunder shall commence
               ----
on the date hereof and continue until the earlier of (a) the Closing of the
Merger and the other transactions contemplated by the Investment Agreement and
the Ancillary Agreements, or (b) the termination of the Investment Agreement
pursuant to Section 6.01 thereof.

         7.    Miscellaneous Provisions. (a) Unless otherwise provided herein, 
               ------------------------
any notice, request, waiver, instruction, consent or document or other
communication required or permitted 

                                       5
<PAGE>
 
to be given by this Agreement shall be effective only if it is in writing and
(i) delivered by hand or sent by certified mail, return receipt requested, (ii)
if sent by a nationally-recognized overnight delivery service with delivery
confirmed, or (iii) if telexed or telecopied, with receipt confirmed as follows:

           Granting Stockholders           Hunton & Williams
           in care of their attorneys:     NationsBank Plaza, Suite 4100
                                           600 Peachtree Street, N.E.
                                           Atlanta, Georgia 30308-2216
                                           Attn: Scott M. Hobby, Esq.
                                           Telecopy No.: (404) 888-4190

           Sprint and Sprint L.P.:         Sprint Corporation
                                           2330 Shawnee Mission Parkway
                                           Westwood, Kansas 66205
                                           Attn: Chief Financial Officer
                                           Telecopy No.: (913) 624-8426

           with a copy to:                 Sprint Corporation
                                           2330 Shawnee Mission Parkway
                                           Westwood, Kansas 66205
                                           Attn: Corporate Secretary
                                           Telecopy No.: (913) 624-8233

           with an additional copy to:     Stinson, Mag & Fizzell, P.C.
                                           1201 Walnut, Suite 2800
                                           P.O. Box 419251
                                           Kansas City, Missouri  64141-6251
                                           Attn: John A. Granda, Esq.
                                           Telecopy No.: (816) 691-3495

The parties shall promptly notify each other of any change in their respective
addresses or facsimile numbers or of the Person or office to receive notices,
requests or other communications under this Section 7(a). Notice shall be deemed
to have been given as of the date when so personally delivered, three (3) days
after when so deposited with the United States mail properly addressed, the next
day when delivered during business hours to such overnight delivery service
properly addressed or when receipt of a telex or telecopy is confirmed, as the
case may be, unless the sending party has actual Knowledge that such notice was
not received by the intended recipient.

     (b)    This Agreement and the Irrevocable Proxies embody the entire
agreement and understanding of the Parties in respect to the matter contemplated
hereby and thereby and supersede and render null and void all other prior
agreements and understandings, written and oral, with respect to the subject
matter hereof and thereof, provided that this provision shall not 

                                       6
<PAGE>
 
abrogate any other written agreement between the Parties executed simultaneously
with this Agreement. No Party shall be liable or bound to any other Party in any
manner by any promises, conditions, representations, warranties, covenants,
agreements and understandings, except as specifically set forth herein or
therein.

     (c)    Except as otherwise permitted in this Agreement, this Agreement may
not be amended or supplemented, unless set forth in a writing signed by and
delivered to, all the Parties and no Irrevocable Proxy may be amended or
supplemented unless set forth in a writing signed by Sprint, Sprint L.P. and the
Granting Stockholder who has granted such Irrevocable Proxy. Except as otherwise
permitted in this Agreement or the Irrevocable Proxies, the terms or conditions
of this Agreement and the Irrevocable Proxies may not be waived unless set forth
in a writing signed by the Party or Parties entitled to the benefits thereof. No
waiver of any of the provisions of this Agreement or the Irrevocable Proxies
shall be deemed or shall constitute a waiver of such provision at any time in
the future or a waiver of any other provision hereof or, in the case of the
Irrevocable Proxies, any similar provision in another Irrevocable Proxy. The
rights and remedies of the Parties are cumulative and not alternative. Except as
otherwise provided in this Agreement or the Irrevocable Proxies, neither the
failure nor any delay by any Party in exercising any right, power or privilege
under this Agreement or the Irrevocable Proxies will operate as a waiver of such
right, power or privilege, and no single or partial exercise of any such right,
power or privilege will preclude any other or further exercise of such right,
power or privilege or the exercise of any other right, power or privilege.

     (d)    Neither this Agreement or the Irrevocable Proxies nor any of the
rights, interests or obligations under this Agreement or the Irrevocable Proxies
shall be assigned or transferred, in whole or in part, by any of the Parties
without the prior written consent of the other Parties; provided, however, that
such assignment or transfer may be made by (i) Sprint or Sprint L.P. to any of
its Affiliates, (ii) by any Affiliate of Sprint to any other Affiliate of
Sprint, or (iii) pursuant to any merger, consolidation, reorganization or sale
of substantially all of the assets of Sprint or such Affiliates (or any
transaction having such effect). Subject to the preceding sentence, this
Agreement and the Irrevocable Proxies will be binding upon, inure to the benefit
of, and be enforceable by, the Parties and their respective successors and
assigns.

     (e)    This Agreement shall be governed by the laws of the State of
Delaware, without regard to conflict of laws principles.

     (f)    If any term or provision of this Agreement or the Irrevocable
Proxies or the application thereof to any Party or set of circumstances shall,
in any jurisdiction and to any extent, be finally held invalid or unenforceable,
such term or provision shall only be ineffective as to such jurisdiction, and
only to the extent of such invalidity or unenforceability, without invalidating
or rendering unenforceable any other terms or provisions of this Agreement or
the Irrevocable Proxies or under any other circumstances, and the Parties shall
negotiate in good faith a substitute provision which comes as close as possible
to the invalidated or unenforceable term or provision, and which puts each Party
in a position as nearly comparable as possible to the position it would have
been in but for the finding of invalidity or unenforceability, while remaining
valid and 

                                       7
<PAGE>
 
enforceable.

     (g)    This Agreement may be executed in one or more counterparts each of
which when so executed and delivered shall for all purposes be deemed to be an
original but all of which, when taken together, shall constitute one and the
same Agreement.

     (h)    The captions and headings used in this Agreement and the Irrevocable
Proxies are inserted for convenience only and shall not be deemed to constitute
part of this Agreement or the Irrevocable Proxies, as the case may be, or to
affect the construction or interpretation hereof or thereof.

     (i)    Nothing in this Agreement or the Irrevocable Proxies, express or
implied, shall create or confer upon any Person, other than the Parties or their
respective successors and permitted assigns, any legal or equitable rights,
remedies, obligations, liabilities or claims under or with respect to this
Agreement or the Irrevocable Proxies, except as expressly provided herein or
therein.

     (j)    Unless specifically stated otherwise, references to sections refer
to sections in this Agreement. References to "includes" and "including" mean
"includes without limitation" and "including without limitation."

     (k)    Each Granting Stockholder is a sophisticated legal entity or
individual that was advised by experienced counsel and, to the extent it deemed
necessary, other advisors in connection with this Agreement and the Irrevocable
Proxies. Accordingly, each Party hereby acknowledges that no Party has relied or
will rely in respect of this Agreement or the Irrevocable Proxies or the
transactions contemplated hereby or thereby upon any document or written or oral
information previously furnished to or discovered by it or its representatives,
other than this Agreement or the Irrevocable Proxies or the documents and
instruments delivered at the Closing.

     (l)    No provision of this Agreement or the Irrevocable Proxies shall be
interpreted in favor of, or against, any Party by reason of the extent to which
such Party or its counsel participated in the drafting thereof or by reason of
the extent to which any such provision is inconsistent with any prior draft
hereof or thereof.

     (m)    The Parties agree that any Action arising out of or relating to this
Agreement or the Irrevocable Proxies shall be brought by the Parties and held
and determined only in a Delaware state court or a federal court sitting in that
state which shall be the exclusive venue of any such Action. Each Party waives
any objection which such Party may now or hereafter have to the laying of venue
of any such Action, and irrevocably consents and submits to the jurisdiction of
any such court (and the appropriate appellate courts) in any such Action. Any
and all service of process and any other notice in any such Action shall be
effective against such Party when transmitted in accordance with subsection (a)
of this Section 7. Nothing contained herein shall be deemed to affect the right
of any Party to serve process in any manner permitted by Law.

                                       8
<PAGE>
 
     (n)    All representations, warranties and covenants in this Agreement or
the Irrevocable Proxies shall survive the execution and delivery of this
Agreement and shall continue for their respective statute of limitations period,
except for any covenant which by its terms continues in effect for a longer time
period, and shall in no way be affected by any investigation of the subject
matter thereof made by or on behalf of any Party or any information capable of
being acquired by any Party.

                                       9
<PAGE>

     (o)    THE PARTIES HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE ANY RIGHT
THAT THEY MAY HAVE TO A TRIAL BY JURY IN ANY ACTION INVOLVING, DIRECTLY OR
INDIRECTLY, ANY MATTER (WHETHER SOUNDING IN TORT, CONTRACT OR OTHERWISE) IN ANY
WAY ARISING OUT OF, RELATED TO, OR CONNECTED WITH THIS AGREEMENT OR THE
IRREVOCABLE PROXIES.

     IN WITNESS WHEREOF, the Parties hereto have executed this Agreement as of
the day and year first above written.

                                   EARTHLINK NETWORK, INC.


                                   By: /s/ Charles G. Betty
                                      -------------------------------- 
                                      Name:  Charles G. Betty
                                      Title: President and CEO


                                   DOLPHIN, INC.


                                   By: /s/ Charles G. Betty
                                      --------------------------------
                                      Name:  Charles G. Betty
                                      Title: President and CEO


                                   SPRINT CORPORATION


                                   By: /s/ Theodore H. Schell
                                      --------------------------------
                                      Name:  Theodore H. Schell
                                      Title: Vice President-Strategic
                                             Planning and Corporate 
                                             Development


                                   SPRINT COMMUNICATIONS 
                                   COMPANY L.P.
                                   By: US Telecom, Inc., General Partner

 
                                   By: /s/ Don A. Jensen
                                      --------------------------------
                                      Name:  Don A. Jensen
                                      Title: Vice President and Secretary



             SIGNATURE PAGE FOR AGREEMENT TO VOTE AND TENDER STOCK
             -----------------------------------------------------

                                       10
<PAGE>
 
                                        /s/ Sky D. Dayton
                                        ----------------------------
                                            Sky D. Dayton













             SIGNATURE PAGE FOR AGREEMENT TO VOTE AND TENDER STOCK
             -----------------------------------------------------

                                       11
<PAGE>
 
                                        /s/ Kevin M. O'Donnell
                                        ----------------------
                                            Kevin M. O'Donnell















             SIGNATURE PAGE FOR AGREEMENT TO VOTE AND TENDER STOCK
             -----------------------------------------------------

                                       12
<PAGE>
 
                                        /s/ Gregory Abbott
                                        ------------------
                                            Gregory Abbott

















             SIGNATURE PAGE FOR AGREEMENT TO VOTE AND TENDER STOCK
             -----------------------------------------------------

                                       13
<PAGE>
 
                                       /s/ Robert S. London
                                       -----------------------------------     
                                           Robert S. London






              SIGNATURE PAGE FOR AGREEMENT TO VOTE AND TENDER STOCK

                                       14
<PAGE>
 
                                       /s/ George Abbott
                                       ---------------------------------
                                           George Abbott
                                      

              
             SIGNATURE PAGE FOR AGREEMENT TO VOTE AND TENDER STOCK

                                       15
<PAGE>
 
                                       STORIE PARTNERS L.P.


                                       By: /s/ Steven A. Ledger
                                          -----------------------------
                                          Name: Steven A. Ledger
                                          Title: Managing Partner



             SIGNATURE PAGE FOR AGREEMENT TO VOTE AND TENDER STOCK

                                       16
<PAGE>
 
                                  Schedule A
                                  ----------

<TABLE> 
<CAPTION> 

                     Name and Address                             Owned Shares                 
                     ----------------                             ------------                 
<S>                                                               <C>                          
Sky D. Dayton
3100 New York Drive
Pasadena, CA 91107                                                         1,500,000

Kevin M. O'Donnell
9919 Beverly Grove Drive
Beverly Hills, CA 90210                                                      944,614

Gregory Abbott
1200 Kessler Drive
Aspen, CO 81611                                                              427,212

Robert S. London
212 Aurora Drive
Montecito, CA 93108                                                          392,032

George Abbott
1285 South Ocean Boulevard
Palm Beach, FL 33480                                                         203,364

Storie Partners LP
c/o Coman and Cohen
One Bush Street, Suite 1350
San Francisco, CA 94104                                                      521,892
</TABLE> 


<PAGE>

                                                              EXHIBIT NO. (C)(9)

                             AGREEMENT TO VOTE STOCK


         THIS AGREEMENT TO VOTE STOCK, dated as of February 10, 1998 (the
"Agreement"), among the Granting Stockholders named on Schedule A hereto, Sprint
Corporation, a Kansas corporation ("Sprint") and Sprint Communications Company
L.P., a Delaware limited partnership ("Sprint L.P.") (the Granting Stockholders,
Sprint and Sprint L.P. are collectively referred to herein as the "Parties" and
individually as a "Party").

         WHEREAS, the respective Boards of Directors of Sprint and EarthLink
Network, Inc., a Delaware corporation (the "Company") have determined to enter
into a strategic relationship in the area of Internet access and related
services and Sprint will make investments in Dolphin, Inc., a Delaware
corporation ("Newco") and the Company in connection with the Merger of Dolphin
Sub, Inc., a Delaware corporation and wholly-owned subsidiary of Newco ("Newco
Sub") and the Company in order to enhance the capabilities for growth and
financial and strategic success;

         WHEREAS, Sprint, Sprint L.P., the Company, Newco and Newco Sub have
entered into an Investment Agreement as of the date hereof (the "Investment
Agreement") contemplating that strategic alliance and addressing the terms and
conditions of such investment and related transactions;

         WHEREAS, a condition to Sprint's obligations under the Investment
Agreement is that each of the Granting Stockholders execute and perform this
Agreement;

         WHEREAS, Sprint proposes to make a tender offer (as it may be amended
from time to time as permitted under the Investment Agreement, with the
Company's consent if required hereby, the "Offer") to purchase 1,250,000 shares
of common stock, par value $.01 per share, of the Company (the "Common Stock"),
for an aggregate cash consideration of $56,250,000 and at a price per share of
Common Stock of $45 net to each seller in cash (such price, as may hereafter be
changed, the "Offer Price"), upon the terms and subject to the conditions set
forth in the Investment Agreement; and the Board of Directors of the Company has
approved the Offer and the other transactions contemplated in the Investment
Agreement and is recommending that the Company's stockholders who wish to
receive cash for their shares of Common Stock accept the Offer;

         WHEREAS, immediately following the closing of the Offer, Sprint L.P.
proposes to purchase 4,102,941 shares of Series A Convertible Preferred Stock,
par value $.01 per share of Newco (the "Convertible Preferred Stock") in
exchange for (i) an aggregate cash consideration of $23,750,000, (ii) the
assignment to Newco of 100% of the Sprint Internet Passport Subscribers, and
(iii) entering into a network agreement whereby Newco and the Company will
utilize Sprint's long-distance network under specified terms and conditions (the
consideration under clauses (i), (ii) and (iii) is referred to collectively
herein as the "Contribution");

         WHEREAS, Sprint L.P. will enter into an agreement whereby Newco and the
Company will utilize the Sprint brand under specified terms and conditions Newco
and Newco Sub will, 
<PAGE>
 
inter alia, have the right to use Sprint distribution channels under specified
- ----- ----
terms and conditions and agrees to sell certain Sprint products;

         WHEREAS, Sprint shall provide Newco and the Company, as co-borrowers,
with up to $25 million of Convertible Senior Debt financing (the "Convertible
Debt Financing") on or after the Closing, with such amount to increase to up to
$100 million over time, such indebtedness to be evidenced by one or more
Convertible Senior Promissory Note(s) (the "Convertible Notes");

         WHEREAS, the closing of the Contribution and the other transactions
referred to above other than the Offer shall take place concurrently with the
merger of Newco Sub into the Company (the "Merger") and the conversion of each
share of the Company's outstanding Common Stock into one share of Newco common
stock, par value $.01 per share ("Newco Common Stock") pursuant to the Merger,
in each case upon the terms and subject to the conditions set forth in the
Investment Agreement and/or the Ancillary Agreements (as defined below);

         WHEREAS, Section 2.02(c) of the Investment Agreement includes as a
condition to the obligations of Sprint and Sprint L.P. to consummate the
transactions contemplated by the Investment Agreement and the Ancillary
Agreements that the Granting Stockholders shall execute, deliver and fully
perform this Agreement and that the terms and conditions of this Agreement shall
have been otherwise satisfied in all material respects;

         WHEREAS, the Granting Stockholders desire to induce the parties to the
Investment Agreement to execute, deliver and perform such agreement and the
Ancillary Agreements and to satisfy the aforesaid condition to the Closing of
the Investment Agreement;

         WHEREAS, capitalized terms used herein shall have the meaning set forth
in the Investment Agreement unless otherwise defined herein; and

         NOW, THEREFORE, in consideration of (i) the foregoing premises, (ii)
the benefits to be received equally by all stockholders of the Company upon the
execution, delivery and performance of the Investment Agreement and the
Ancillary Agreements, (iii) the interest of Sprint in purchasing shares of
Common Stock from the stockholders of the Company in the Offer, (iv) the
representations, warranties, covenants and agreements contained in this
Agreement, the Investment Agreement and the Ancillary Agreements, and (v) for
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the parties hereto, intending to be legally bound, hereby
agree as follows:

         1. Agreement and Obligation to Vote. Each of the Granting Stockholders
            --------------------------------
on and prior to the Termination Date agrees to cast, or cause to be cast, at any
duly called meeting of the stockholders, all of the votes represented by the
shares of Common Stock which they own of record or beneficially (within the
meaning of Rule 13d-3 under the Exchange Act as of the date hereof), which
number of shares is set forth opposite the Granting Stockholder's name on
Schedule A attached hereto (the "Owned Shares"; which term shall include any and
all other shares of capital stock or securities or rights issued or issuable in
respect thereof on or after the date hereof), (which for this purpose shall also
include all shares of Newco Common Stock 
<PAGE>
 
received upon conversion of the Owned Shares into Newco Common Stock pursuant to
the Merger) which such Granting Stockholder has the right or power to vote,
directly or indirectly, or has the right or power to vote by holding a proxy to
vote such shares or otherwise, in favor of the following matters only (a) the
Merger, (b) the issuance and sale of the Convertible Preferred Stock, the
Convertible Notes and the Newco Common Stock issuable upon conversion of the
Convertible Preferred Stock and/or the Convertible Notes, in each case in
accordance with the Investment Agreement and the applicable Ancillary
Agreements, (c) the other transactions contemplated by the Investment Agreement
and the Ancillary Agreements, and (d) any related matter that must be approved
by the holders of Common Stock or Newco Common Stock in order for the
transactions contemplated by the Investment Agreement or any Ancillary Agreement
to be consummated so long as not inconsistent with the Investment Agreement and
the Ancillary Agreements.

         2. Agreement Not to Dispose of Shares. Each Granting Stockholder hereby
            ----------------------------------
covenants and agrees as follows between the date hereof and the Termination
Date:

         (a) The Granting Stockholders will not, and will not agree to, directly
or indirectly, (i) sell, transfer, assign, pledge, hypothecate, cause to be
redeemed or repurchased or otherwise dispose of any of the Owned Shares, (ii)
grant any proxy, power of attorney or interest in or with respect to the Owned
Shares, or (iii) enter into a voting agreement with respect to the Owned Shares,
in any such case prior to the Closing of the Merger and the other transactions
contemplated by the Investment Agreement and the Ancillary Agreements, provided,
such Granting Stockholder may pledge such shares in connection with bona fide
margin facilities.

         (b) The Granting Stockholders will request the Company to have the
certificates evidencing those shares which are owned of record by such Granting
Stockholders to bear substantially the following legend and to request the
Company to instruct its transfer agent to stop the transfer of any certificates
bearing such legend that is not made in accordance with this Agreement:

             THE TRANSFER OF AND VOTING OF THE SHARES REPRESENTED BY THIS
             CERTIFICATE IS SUBJECT TO THE PRIOR RIGHTS AND LIMITATIONS
             IMPOSED BY THE AGREEMENT TO VOTE DATED AS OF FEBRUARY 10, 1998
             AMONG SPRINT CORPORATION, A KANSAS CORPORATION, SPRINT
             COMMUNICATIONS COMPANY L.P. AND CERTAIN GRANTING STOCKHOLDERS
             WHO ARE SIGNATORIES THERETO. A COPY OF SUCH AGREEMENT WILL BE
             FURNISHED BY THE COMPANY'S SECRETARY UPON WRITTEN REQUEST AND
             WITHOUT CHARGE.

         (c) Notwithstanding the foregoing, each Granting Stockholder shall be
permitted to tender any or all Owned Shares into the Offer.

                                       3
<PAGE>
 
         3. Representations and Warranties. Each of the Granting Stockholders,
            ------------------------------
as to itself only, represents and warrants to Sprint and Sprint L.P. as follows:

         (a) Each Granting Stockholder that is an entity is a corporation,
limited liability company or partnership that is duly organized, validly
existing and in good standing under the laws of the jurisdiction in which it is
incorporated or organized and has the power and authority to execute, deliver
and perform this Agreement. Each Granting Stockholder that is a natural person
has the capacity and the full legal right to execute, deliver and perform this
Agreement.

         (b) This Agreement has been duly executed and delivered and constitute
a valid and binding agreement and is enforceable in accordance with its terms,
except to the extent that the enforcement of this Agreement may be limited by
(i) bankruptcy, insolvency, reorganization, moratorium or other similar laws now
or hereafter in effect relating to creditors' rights generally, and (ii) general
principles of equity regardless of whether enforceability is considered in a
proceeding in equity or at law.

         (c) The execution and delivery of this Agreement did not, and the
performance thereof, without obtaining the consent of any third party will not,
conflict with, or result in any violation of, or default (with or without notice
or lapse of time, or both) under (i) to their knowledge, the certificate of
incorporation or bylaws of the Company, (ii) any loan or credit agreement, note,
bond, mortgage, indenture, lease or other agreement, instrument, permit or
license applicable to the Granting Stockholder or the Owned Shares, or (iii) any
Law applicable to the Granting Stockholders. No consent, approval, order or
authorization of, or registration, declaration or filing with, any Governmental
Entity or any party to a Contract is required by or with respect to the
applicable Granting Stockholder or by the Granting Stockholder in connection
with the execution and delivery of this Agreement except under the Exchange Act.

         (d) Each of the Owned Shares is free and clear of all Liens except for
bona fide margin facilities permitted under Section 2(a), and, except as
contemplated by this Agreement and the Stockholder's Agreement, is not subject
to any (i) right of first refusal, (ii) right to purchase, acquire or vote, or
(iii) power of attorney.

         (e) Each Granting Stockholder has the sole power, right and authority
to vote the Owned Shares in accordance with the terms of this Agreement.

         (f) Notwithstanding the foregoing, Quantum Industrial Partners LDC
("QIP") has granted discretionary authority to vote and dispose of its Owned
Shares to Soros Fund Management LLC, although such grant will not affect QIP's
obligations hereunder.

         4. Term. This Agreement and the obligations hereunder shall commence on
            ----
the date hereof and continue until the earlier of (a) consummation of the
Merger, (b) termination of the Investment Agreement pursuant to Section 6.01
thereof, (c) the modification, waiver or amendment, in any manner, adverse to
the Granting Stockholders, of the Investment Agreement or the Ancillary
Agreements, and (d) June 15, 1998 (the "Termination Date").

                                       4
<PAGE>
 
         5. Miscellaneous Provisions. (a) Unless otherwise provided herein, any
            ------------------------
notice, request, waiver, instruction, consent or document or other communication
required or permitted to be given by this Agreement shall be effective only if
it is in writing and (i) delivered by hand or sent by certified mail, return
receipt requested, (ii) if sent by a nationally-recognized overnight delivery
service with delivery confirmed, or (iii) if telexed or telecopied, with receipt
confirmed as follows:

           Granting Stockholders           Hunton & Williams
           in care of their attorneys:     NationsBank Plaza, Suite 4100
                                           600 Peachtree Street, N.E.
                                           Atlanta, Georgia 30308-2216
                                           Attn: Scott M. Hobby, Esq.
                                           Telecopy No.: (404) 888-4190

           Sprint and Sprint L.P.:         Sprint Corporation
                                           2330 Shawnee Mission Parkway
                                           Westwood, Kansas 66205
                                           Attn: Chief Financial Officer
                                           Telecopy No.: (913) 624-8426

           with a copy to:                 Sprint Corporation
                                           2330 Shawnee Mission Parkway
                                           Westwood, Kansas 66205
                                           Attn: Corporate Secretary
                                           Telecopy No.: (913) 624-8233

           with an additional copy to:     Stinson, Mag & Fizzell, P.C.
                                           1201 Walnut, Suite 2800
                                           P.O. Box 419251
                                           Kansas City, Missouri 64141-6251
                                           Attn: John A. Granda, Esq.
                                           Telecopy No.: (816) 691-3495

The parties shall promptly notify each other of any change in their respective
addresses or facsimile numbers or of the Person or office to receive notices,
requests or other communications under this Section 5(a). Notice shall be deemed
to have been given as of the date when so personally delivered, when physically
delivered by the U.S. Postal Service at the proper address, the next day when
delivered during business hours to an overnight delivery service properly
addressed or when receipt of a telex or telecopy is confirmed, as the case may
be, unless the sending party has actual Knowledge that such notice was not
received by the intended recipient.

         (b) This Agreement embodies the entire agreement and understanding of
the Parties in respect to the matter contemplated hereby and thereby and
supersede and render null and void all other prior agreements and
understandings, written and oral, with respect to the subject matter hereof and
thereof, provided that this provision shall not abrogate any other written
agreement 

                                       5
<PAGE>
 
between the Parties executed simultaneously with this Agreement. No Party shall
be liable or bound to any other Party in any manner by any promises, conditions,
representations, warranties, covenants, agreements and understandings, except as
specifically set forth herein or therein.

         (c) Except as otherwise permitted in this Agreement, this Agreement may
not be amended or supplemented, unless set forth in a writing signed by and
delivered to, all the Parties. Except as otherwise permitted in this Agreement,
the terms or conditions of this Agreement may not be waived unless set forth in
a writing signed by the Party or Parties entitled to the benefits thereof. No
waiver of any of the provisions of this Agreement shall be deemed or shall
constitute a waiver of such provision at any time in the future or a waiver of
any other provision hereof. The rights and remedies of the Parties are
cumulative and not alternative. Except as otherwise provided in this Agreement,
neither the failure nor any delay by any Party in exercising any right, power or
privilege under this Agreement will operate as a waiver of such right, power or
privilege, and no single or partial exercise of any such right, power or
privilege will preclude any other or further exercise of such right, power or
privilege or the exercise of any other right, power or privilege.

         (d) This Agreement nor any of the rights, interests or obligations
under this Agreement shall be assigned or transferred, in whole or in part, by
any of the Parties without the prior written consent of the other Parties;
provided, however, that such assignment or transfer may be made by (i) Sprint or
Sprint L.P. to any of their Affiliates, (ii) by any Affiliate of Sprint to any
other Affiliate of Sprint, or (iii) pursuant to any merger, consolidation,
reorganization or sale of substantially all of the assets of Sprint or such
Affiliates (or any transaction having such effect). Subject to the preceding
sentence, this Agreement will be binding upon, inure to the benefit of, and be
enforceable by, the Parties and their respective successors and assigns.

         (e) This Agreement shall be governed by the laws of the State of
Delaware, without regard to conflict of laws principles.

         (f) If any term or provision of this Agreement or the application
thereof to any Party or set of circumstances shall, in any jurisdiction and to
any extent, be finally held invalid or unenforceable, such term or provision
shall only be ineffective as to such jurisdiction, and only to the extent of
such invalidity or unenforceability, without invalidating or rendering
unenforceable any other terms or provisions of this Agreement or under any other
circumstances, and the Parties shall negotiate in good faith a substitute
provision which comes as close as possible to the invalidated or unenforceable
term or provision, and which puts each Party in a position as nearly comparable
as possible to the position it would have been in but for the finding of
invalidity or unenforceability, while remaining valid and enforceable.

         (g) This Agreement may be executed in one or more counterparts each of
which when so executed and delivered shall for all purposes be deemed to be an
original but all of which, when taken together, shall constitute one and the
same Agreement.

         (h) The captions and headings used in this Agreement are inserted for
convenience only and shall not be deemed to constitute part of this Agreement or
to affect the construction or 

                                       6
<PAGE>
 
interpretation hereof.

         (i) Nothing in this Agreement, express or implied, shall create or
confer upon any Person, other than the Parties or their respective successors
and permitted assigns, any legal or equitable rights, remedies, obligations,
liabilities or claims under or with respect to this Agreement, except as
expressly provided herein.

         (j) Unless specifically stated otherwise, references to sections refer
to sections in this Agreement. References to "includes" and "including" mean
"includes without limitation" and "including without limitation."

         (k) Each Granting Stockholder is a sophisticated legal entity or
individual that was advised by experienced counsel and, to the extent it deemed
necessary, other advisors in connection with this Agreement. Accordingly, each
Party hereby acknowledges that no Party has relied or will rely in respect of
this Agreement or the transactions contemplated hereby or thereby upon any
document or written or oral information previously furnished to or discovered by
it or its representatives, other than this Agreement or the documents and
instruments delivered at the Closing.

         (l) No provision of this Agreement shall be interpreted in favor of, or
against, any Party by reason of the extent to which such Party or its counsel
participated in the drafting thereof or by reason of the extent to which any
such provision is inconsistent with any prior draft hereof or thereof.

         (m) The Parties agree that any Action arising out of or relating to
this Agreement shall be brought by the Parties and held and determined only in a
Delaware state court or a federal court sitting in that state which shall be the
exclusive venue of any such Action. Each Party waives any objection which such
Party may now or hereafter have to the laying of venue of any such Action, and
irrevocably consents and submits to the jurisdiction of any such court (and the
appropriate appellate courts) in any such Action. Any and all service of process
and any other notice in any such Action shall be effective against such Party
when transmitted in accordance with subsection (a) of this Section 5. Nothing
contained herein shall be deemed to affect the right of any Party to serve
process in any manner permitted by Law.

         (n) All representations, warranties and covenants in this Agreement
shall survive the execution and delivery of this Agreement and shall continue
for their respective statute of limitations period, except for any covenant
which by its terms continues in effect for a longer time period, and shall in no
way be affected by any investigation of the subject matter thereof made by or on
behalf of any Party or any information capable of being acquired by any Party.

         (o) THE PARTIES HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE ANY RIGHT
THAT THEY MAY HAVE TO A TRIAL BY JURY IN ANY ACTION INVOLVING, DIRECTLY OR
INDIRECTLY, ANY MATTER (WHETHER SOUNDING

                                       7
<PAGE>
 
IN TORT, CONTRACT OR OTHERWISE) IN ANY WAY ARISING OUT OF, RELATED TO, OR
CONNECTED WITH THIS AGREEMENT.

         IN WITNESS WHEREOF, the Parties hereto have executed this Agreement as
of the day and year first above written.

                                 SPRINT CORPORATION


                                 By: /s/ Theodore H. Schell
                                    --------------------------------------------
                                    Name:  Theodore H. Schell
                                           -------------------------------------
                                    Title: Vice President-Strategic
                                           -------------------------------------
                                           Planning and Corporate Development
                                           -------------------------------------


                                 SPRINT COMMUNICATIONS 
                                 COMPANY L.P.

                                 By: US Telecom, Inc., General Partner


                                 By: /s/ Don A. Jensen
                                    --------------------------------------------
                                    Name:  Don A. Jensen
                                           -------------------------------------
                                    Title: Vice President and Secretary
                                           -------------------------------------













                  SIGNATURE PAGE FOR AGREEMENT TO VOTE STOCK
<PAGE>
 
                                           /s/ George Soros
                                           ------------------------------------
                                           George Soros

                                           QUANTUM INDUSTRIAL PARTNERS LDC


                                           By: /s/ Michael C. Neus
                                              ----------------------------------
                                              Name:  Michael C. Neus
                                                     ---------------------------
                                              Title: Attorney-in-Fact
                                                     ---------------------------


                                           /s/ Reed Slatkin
                                           -------------------------------------
                                           Reed Slatkin

                                           /s/ Sidney Azeez
                                           -------------------------------------
                                           Sidney Azeez





                  SIGNATURE PAGE FOR AGREEMENT TO VOTE STOCK
<PAGE>
 
                                  Schedule A
                                  ----------

       Name and Address                         Owned Shares          
       ----------------                         ------------          

George Soros
888 Seventh Avenue
New York, NY 10106                                   214,545
                                                 
Quantum Industrial Partners LDC                  
c/o Soros Fund Management                        
Attn:  Paul McNulty                              
888 Seventh Avenue                               
New York, NY 10106                                 1,456,095
                                                 
Reed Slatkin 
890 North Kellogg Avenue                         
Santa Barbara, CA 93111                            1,042,473
                                                 
Sidney Azeez                                     
c/o Unitel Cellular Communications Systems       
Bayport One, Suite 400                           
West Atlantic City, NJ 08232                         236,884


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