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                                                                     Exhibit 4.3

                         SHAREHOLDERS' RIGHTS AGREEMENT

      This Shareholders' Rights Agreement (this "Agreement"), is dated as of
October 2, 2000, by and between Telecom Wireless Solutions, Inc., a Delaware
corporation ("TWS"), Blue Sky Communications, Inc., a Georgia corporation (the
"Company"), Stanford Financial Group Company, a Florida corporation ("Stanford")
and interWAVE Communications International, Ltd., a Bermuda corporation
("IWAV").

                                    RECITALS

      WHEREAS, IWAV and the Company have entered into a Stock Purchase Agreement
(the "Stock Purchase Agreement") of even date herewith, in which IWAV has agreed
to purchase from the Company 1,175,000 shares of Convertible Series A Preferred
Stock, par value $0.001 per share, for an aggregate purchase price of
$4,700,000;

      WHEREAS, the parties hereto desire to set forth herein their mutual
agreement regarding various matters relating to the Company.

                                   AGREEMENTS

      NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
set forth herein, the parties hereto, intending to be legally bound, agree as
follows:

                                   ARTICLE 1

                                   DEFINITIONS

      1.1 CERTAIN DEFINITIONS. As used in this Agreement, the following terms
shall have the following respective meanings:

      "Affiliate" means, with respect to any Person, any Person that, directly
or indirectly, controls, is controlled by, or is under common control with such
first-named Person. For the purposes of this definition, "control" (including
with correlative meanings, the terms "controlled by" and "under common control
with") shall mean the possession, directly or indirectly, of the power to direct
or cause the direction of the management and policies of such Person, whether
through the ownership of voting securities or by contract or otherwise.

      "Board" means the Board of Directors of the Company, as constituted from
time to time.

      "Commission" means the Securities and Exchange Commission.

      "Common Stock" means shares of the Company's common stock, par value $.001
per share.

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      "Corporate Transaction" means, (i) the acquisition of the Company by
another entity by means of any transaction or series of related transactions
(including, without limitation, any reorganizations merger or consolidation, but
excluding any merger effected primarily for the purpose of changing the domicile
of the Company) in which the shareholders of the Company immediately prior to
the transaction (or first step in such related transactions) do not retain at
least fifty percent (50%) or more of the outstanding voting power of the
Company; or (ii) a sale of all or substantially all of the assets of the
Company.

      "Person" means any individual, corporation, partnership, limited liability
company, joint venture, association, joint stock company, trust, unincorporated
organization or government or any agency or political subdivision thereof.

      "Preferred Stock" means the shares of the Company's preferred stock, par
value $0.001 per share.

      "Qualified IPO" means the closing of a firmly underwritten public offering
of the shares of Common Stock of the Company at a per share price (prior to
underwriting commission and expenses) of not less than $8.40 per share and for a
total offering of at least twenty-five million dollars ($25,000,000).

      "Representing Party" has the meaning set forth in Section 4 of this
Agreement.

      "Securities Act" means the Securities Act of 1933, as amended, including
the rules and regulations of the Commission promulgated thereunder.

      "Shareholder" means each of TWS, Stanford and IWAV. "Shareholders" means
all of TWS, Stanford and IWAV.

      "Shares" means all shares of Common Stock and Preferred Stock held by
Shareholder and any of its Affiliates, and any and all shares of Common Stock
and Preferred Stock from time to time acquired by Shareholder and any of its
Affiliates.

      "Stock Purchase Agreement" shall have the meaning set forth in the
recitals.

      "Subsidiary" means, with respect to the Company, (i) any corporation more
than 50% of whose stock of any class or classes having by the terms thereof
ordinary voting power to elect a majority of the directors of such corporation
(irrespective of whether or not at the time such stock of any class or classes
of such corporation shall have or might have voting power by reason of the
happening of any contingency) is at the time owned by the Company and/or one or
more subsidiaries of the Company and (ii) any partnership, association, joint
venture or other entity (a) in which the Company and/or one or more subsidiaries
of the Company has more than a 50% equity interest at the time or (b) as to
which the Company and/or one or more of its subsidiaries

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has the power to direct or cause the direction of the management and policies of
such entity by contract or otherwise.

      "Transfer" (including with correlative meaning the term "Transferred")
means any transfer, sale, assignment, pledge, encumbrance or other disposition
of Shares or any portion of the ownership interest therein, irrespective of
whether any of the foregoing are effected voluntarily or involuntarily, by
operation of law or otherwise, or whether INTER VIVOS or upon death.

                                   ARTICLE 2

                               TRANSFER OF SHARES

      2.1 TRANSFER OF SHARES. No Transfer of Shares, or any interest therein,
shall be made by Shareholder unless the Shareholder shall comply with the
provisions of Section 5.1 hereof and then not unless (i) the Company, at its
option, shall have received a written opinion of counsel reasonably satisfactory
to the Company, addressed to the Company, to the effect that the proposed
Transfer of Shares, or an interest therein, may be effected without registration
under the Securities Act or under applicable state securities laws, (ii) the
Company shall have received such representation letters as it may reasonably
require, in form and substance reasonably satisfactory to the Company, to ensure
compliance with the provisions of the Securities Act and applicable state
securities laws and (iii) the Transferee shall have entered into this Agreement.
Notwithstanding the foregoing provisions of this Section 2.1, the restrictions
imposed by this Section 2.1 upon the transferability of any Shares shall
terminate when such Shares have been registered under the Securities Act and
sold by the holder thereof in accordance with such registration or Transferred
pursuant to Rule 144 under the Securities Act.

      Section 2.2 RESTRICTIVE LEGEND. Unless and until otherwise permitted by
Section 2.1, each certificate for Shares issued to Shareholder, or to any
subsequent permitted Transferee of such certificate, shall be stamped or
otherwise imprinted with a restrictive legend substantially in the form of the
following:

            "The securities represented by this Certificate have been acquired
            for investment and have not been registered pursuant to the
            Securities Act of 1933, as amended (the "Act"), or any applicable
            state statutes, and are subject to the provisions (including the
            restrictions on transfer) set forth in that certain Shareholders'
            Rights Agreement dated as of October 2, 2000, between Blue Sky
            Communications, Inc., Telecom Wireless Solutions, Inc., Stanford
            Financial Group Company and interWAVE Communications International,
            Ltd. (the "Shareholders' Rights Agreement"), a copy of which is on
            file with the Secretary of the Company. Such securities may not be
            sold, transferred, pledged,

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            hypothecated, or otherwise disposed of except in compliance with the
            Shareholders' Agreement and unless (i) a registration statement
            under the Act or applicable state securities laws shall have become
            effective with regard thereto, or (ii) an exemption from
            registration exists under the Act (or the regulations promulgated
            thereunder) and applicable state securities laws and such exemption
            is applicable thereto."

In connection with the termination of restrictions on transferability of Shares
provided for hereunder, the holder of a certificate representing such Shares as
to which such restrictions shall have terminated shall be entitled to receive
from the Company, without expense to such holder, one or more new certificates
for Shares not bearing the restrictive legend set forth in this Section 2.2.

      2.2 TRANSFER OF RIGHTS. Notwithstanding anything to the contrary, each
Shareholders shall be allowed to transfer its Shares to its Subsidiary and the
rights granted to Shareholder under this Agreement shall inure to the benefit of
any transferee of Shares transferred by Shareholder and the obligations of
Shareholder shall be assumed by any transferee of Shares transferred by
Shareholder; provided, however, that the transfer does not contravene the
provisions of this Agreement.

                                   ARTICLE 3
                         BOARD OF DIRECTORS; MANAGEMENT

      3.1 COMPOSITION OF BOARD OF DIRECTORS. For so long as IWAV holds at least
587,500 Shares, IWAV shall have the right to nominate any one (1) individual, in
its sole discretion, to be a member of the Board and the Board shall not have
more than seven members.

      3.2 REMOVAL. The director designated as aforesaid by IWAV and duly elected
to the Board shall be subject to removal only at the request of IWAV.

      3.3 ELECTION OF DIRECTORS. TWS and Stanford agree to vote all of their
Shares for election (or removal) of the nominee designated by IWAV as provided
in Sections 3.1 and 3.2 hereof and, in the event of a vacancy in the Board
created by the death, resignation or removal of such director, to vote all their
respective Shares for the election of a nominee to be designated by IWAV (unless
such vacancy has resulted from the termination of the power of IWAV to nominate
such director). Such replacement director shall hold office for the remainder of
the term of the director for whom he or she is designated to replace. The
Company shall take such action as shall be reasonably required in order to
facilitate the nomination, removal and election of such director as aforesaid.
Without limiting the foregoing, in the event that TWS and Stanford no longer
hold Shares which, together with those of IWAV, represent a majority of the
voting interests of the Company, the Company shall use its best efforts to cause
additional shareholders to execute a voting agreement requiring them to vote
their shares of the Company's voting

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capital stock for the IWAV nominee to the Board, so that the shares held by such
additional shareholders, together with those shares held by Shareholders,
represent a majority of the voting interests of the Company.

      3.4 MEETING. The Board shall meet at least quarterly.

                                   ARTICLE 4

             REPRESENTATIONS AND WARRANTIES OF TWS, THE COMPANY AND
                                   SHAREHOLDER

      Each of the TWS, Stanford, IWAV and the Company (each, a "Representing
Party") hereby represents and warrants to the other Representing Parties as
follows:

      4.1 ORGANIZATION, QUALIFICATION AND POWER. Each Representing Party is a
corporation duly organized, validly existing and in good standing under the laws
of the jurisdiction of its organization, and has the requisite corporate power
and authority to own and hold its properties, and to carry on its business as
conducted or proposed to be conducted. Each Representing Party has requisite
corporate power and authority to execute, deliver and perform this Agreement.

      4.2 AUTHORIZATION OF AGREEMENT; NO CONFLICT. The execution, delivery and
performance by each Representing Party of this Agreement have been duly
authorized by all requisite corporate action of the Representing Party, if any,
and will not violate any provision of law, any order of any court or other
agency of government, any of such Representing Party's organizational documents,
or any provision of any indenture, agreement or instrument to which such
Representing Party or any of such Representing Party's properties or assets is
bound, or conflict, result in a breach of, or constitute (with due notice or
lapse of time or both) a default under any such indenture, agreement or other
instrument.

      4.3 VALIDITY. This Agreement has been duly executed and delivered by each
Representing Party and constitutes a legal, valid and binding obligation of such
Representing Party, enforceable against such Representing Party in accordance
with its terms, subject to the effect of bankruptcy, insolvency, moratorium, or
other similar laws affecting the enforcement of creditors' rights generally and
except as to the extent the availability of equitable remedies may be limited to
general principles of equity.

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                                   ARTICLE 5

                    TRANSFER, CO-SALE AND REGISTRATION RIGHTS

      5.1 RIGHTS OF TRANSFER.

            (a) If Shareholder determines to voluntarily Transfer all or any
      part of the Shares, Shareholder shall first give written notice (the
      "Sales Notice") of such intention to the Company addressed to the Chief
      Executive Officer or Chief Financial Officer. The Sales Notice shall
      include the name of the proposed Transferee, the proposed aggregate
      purchase price including cash value of any non-cash consideration, the
      terms of payment of such aggregate purchase price and all other matters
      relating to such proposed sale. The Sales Notice shall constitute a
      binding offer by the Shareholder to sell to the Company (or in the event
      that the Company shall not accept such offer, to the other shareholders of
      the Company) the Shares which are the subject of the Sales Notice at a
      price equal to the monetary price designated in the Sales Notice. Not
      later than fifteen days after receipt of the Sales Notice (the "Election
      Period"), the Company shall deliver written notice (the "Company Notice")
      to the Shareholder and the other Shareholders stating whether the Company
      has accepted the offer set forth in the Sales Notice. The Company may
      accept none, any or all of the offered Shares. The Company Notice shall
      fix a time, location and date for the closing of the purchase which date
      shall not be less than ten nor more than thirty days after the later of
      the receipt of any required regulatory approvals and delivery of the
      Company Notice.

            (b) If the Company fails to accept any or all of the offered Shares
      within the Election Period then all other Shareholders (the "Non-Selling
      Shareholders") shall have the right to purchase the portion of the Shares
      not purchased by the Company at a price equal to the price designated in
      the Sales Notice. Not later than twenty days after the earlier of (i) the
      date the Company gives notice of its intention not to purchase any or all
      of the offered Shares and (ii) the expiration of the Election Period, the
      Non-Selling Shareholders shall deliver to the selling Shareholder a
      written notice (the "Non-Selling Shareholders' Notice") stating whether
      the Non-Selling Shareholders intend to purchase any of the offered Shares
      not purchased by the Company and stating the maximum amount of the offered
      Shares such Non-Selling Shareholder would be willing to purchase under the
      terms of the Sales Notice. The Non-Selling Shareholders may accept none,
      any or all of the offer of the selling Shareholder.

            (c) If the Company has not agreed to purchase any of the offered
      Shares, and the Non-Selling Shareholders accept the offer of the Selling
      Shareholder, the Non-Selling Shareholders' Notice shall fix a time,
      location and date for the closing of the purchase, which date shall be not
      less than ten nor more than thirty days after the later of the receipt of
      any required regulatory approvals and delivery of the Non-Selling
      Shareholders'

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      Notice. If the Company has agreed to purchase a portion of the offered
      Shares, the closing shall take place at the time, location and date set
      forth in the Company Notice. Unless otherwise agreed between or among the
      Non-Selling Shareholders, the purchase by the Non-Selling Shareholders
      shall be on a pro rata basis relative to the percentage of the offered
      Shares such Non-Selling Shareholder has offered to buy, allocated
      according to their pro rata percentage ownership of the Company; provided
      that if one or more of the Non-Selling Shareholders elects not to purchase
      any of the offered Shares, the remaining Non-Selling Shareholders may
      purchase the offered Shares not purchased by the Company, without the
      consent of the Non-Selling Shareholders who elected not to participate,
      pro rata between or among them or in such other manner as they may agree.

            (d) Subject to Section 5.2 of this Agreement, if the Company or the
      Non-Selling Shareholders fail to purchase all of the offered Shares, then
      the Selling Shareholder shall be free to sell the unpurchased Shares to
      the Transferee designated in the Sales Notice at a price and on terms no
      less favorable than described in the Sales Notice; provided that such sale
      must be consummated within 180 days after the giving of the Sales Notice.
      As a condition precedent to the effectiveness of a Transfer pursuant to
      this Section 5.1, the Selling Shareholder and the proposed Transferee
      shall comply with the provisions of Section 2 and thereafter such
      Transferee shall be permitted to Transfer any Shares only in accordance
      with this Agreement.

      5.2 RIGHTS OF CO-SALE. If the Company and the Non-Selling Shareholders
have not elected to purchase all of the offered Shares pursuant to Section 5.1,
and any unpurchased Shares which the Selling Shareholder proposes to Transfer to
the Transferee pursuant to Section 5.1(d) are equal to at least ten percent
(10%) of such Selling Shareholders' Shares, then any Non-Selling Shareholder who
has not elected to purchase any of Selling Shareholders' Shares shall have the
right to participate in the proposed Transfer on a pro rata basis relative to
the percentage of the offered Shares such Transferee has offered to buy,
allocated according to the respective pro rata ownership of Shares owned prior
to the proposed Transfer of the Shareholders participating in the Transfer. Any
Non-Selling Shareholder who elects to participate in such Transfer must give
written notice (the "Co-Sale Notice") to the Selling Shareholder not later than
the earlier of 20 days after the earlier of (i) the date the Company gives
notice of its intention not to purchase any or all of the offered Shares and
(ii) the expiration of the Election Period. If the Selling Shareholder does not
receive a Co-Sale Notice from a Non-Selling Shareholder within such 20 day
period, the Selling Shareholder shall be free to consummate the proposed
Transfer described in the Sales Notice without any obligation to include such
Non-Selling Shareholders Shares in such Transfer. Any Non-Selling Shareholder
who elects to participate in the Transfer shall have the right to receive the
same price per share as the price set forth in the Sales Notice. The Selling
Shareholder and each participating Non-Selling Shareholder shall Transfer to the
Transferee all but not less than all of the Shares proposed to be sold by them
at not less than the price and upon other terms and conditions if any not more
favorable to the Transferee than those stated in the Sales Notice.

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      5.3 REGISTRATION RIGHTS. IWAV, TWS and Stanford shall have the
registration rights described in a Registration Rights Agreement entered into
between the Company and IWAV, TWS and Stanford dated October 2, 2000.

      5.4 PERMITTED SALES. Notwithstanding the foregoing, Article 5 shall not
apply to: (i) any sale by IWAV in order to remain below a 20% ownership and/or
voting interest in the Company; and (ii) any sales of Shares pursuant to
registration rights as described in the Registration Rights Agreement as
referenced in Section 5.3 above.

                                   ARTICLE 6

                             IWAV OWNERSHIP INTEREST

      6.1 MAINTENANCE OF OWNERSHIP INTEREST. The Company shall cooperate, and
TWS and Stanford shall cause the Company to cooperate, with IWAV in fulfilling
the terms of this Article 6 allowing IWAV to sell its Shares or purchase the
Company's capital stock in order for IWAV to remain below a 20% ownership and/or
voting interest (the "20% Threshold") and to maintain its 19% ownership
interest, on only an issued and outstanding basis ("Ownership Stake"), as
established by the Stock Purchase Agreement entered into between the Company and
IWAV and dated as of the date of this Agreement.

      6.2 CALL OPTION. If the Company issues any shares of Common Stock or
additional shares of Series A Preferred Stock, regardless whether sold, granted,
issued pursuant to an exercise of any options or warrants, issued pursuant to
the conversion of any note or other instrument, or issued through any other
means, IWAV shall have the right to purchase such shares of the Company's Common
Stock or Series A Preferred Stock, as IWAV shall choose in its sole discretion,
to maintain its Ownership Stake. The purchase price shall be the fair market
value of such shares.

                                   ARTICLE 7

                                  MISCELLANEOUS

      7.1 SURVIVAL. The representations, warranties, obligations, undertakings
and agreements contained in this Agreement shall survive the execution and
delivery of this Agreement, the issuance of and payment for any Preferred Stock
pursuant to the Stock Purchase Agreement and any disposition of Preferred Stock.

      7.2 ENTIRE AGREEMENT; AMENDMENT. This Agreement embodies the entire
agreement of the parties hereto with respect to the subject matter hereof. Any
provision of this Agreement may be amended, waived or modified if, but only if,
such amendment, waiver or modification is

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in writing and is signed by the parties sought to be bound by such amendment,
waiver or modification.

      7.3 BINDING EFFECT; BENEFITS. This Agreement and all the provisions hereof
shall be binding upon and inure to the benefit of the parties hereto and their
respective heirs, legal representatives, successors and permitted assigns.
Except as expressly provided herein, nothing in this Agreement is intended to
confer on any Persons, other than the parties hereto or their respective
successors and assigns, any rights, remedies, obligations or liabilities under
or by reason of this Agreement.

      7.4 RECAPITALIZATION, EXCHANGES, ETC. AFFECTING THE COMMON STOCK. All the
provisions of this Agreement shall apply, to the full extent set forth herein
with respect to the Shares and any and all securities of the Company or any
successor or assign of the Company (whether by merger, consolidation, sale of
assets or otherwise) which may be issued in respect of, in exchange for, or in
substitution of the Shares or by reason of any stock dividend, split, reverse
split, combination, recapitalization, reclassification, merger, consolidation or
otherwise.

      7.5 NOTICES, ETC. All notices, requests, consents, and other
communications hereunder shall be in writing and shall be deemed effectively
given and received when delivered in person or by national overnight courier
service or by certified or registered mail, return receipt requested, or by
telecopier, addressed as follows:

      (a)   if to the Company:

            Blue Sky Communications, Inc.
            100 North Point Center East
            Suite 300
            Alpharetta, Georgia 30022
            Attention: Mr. David D. Lasier, Chief Executive Officer
            Facsimile No.: (678) 366-9659

      with copies to:

            Blue Sky Communications, Inc.
            100 North Point Center East
            Suite 320
            Alpharetta, Georgia 30022
            Attention: Richard A. Cohen, Esq., General Counsel
            Facsimile No.: (678) 366-9662

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      (b)   if to TWS:

            Telecom Wireless Solutions, Inc.
            100 North Point Center East
            Ste. 320
            Alpharertta, GA  30022
            Attention:  David D. Lasier, Chairman and CEO
            Facsimile No.: (678) 366-9659

            with a copy to:

            Attention: Richard A. Cohen, Esq., General Counsel, at the same
                       address
            Facsimile No.: (678) 366-9662

      (c)   if to Stanford:

            Stanford Financial Group Company
            5100 Westheimer
            Houston, Texas 77056
            Attention: Mr. James M. Davis, Chief Financial Officer
            Facsimile No.: (713) 964-5142

            with copies to:

            Stanford Financial Group Company
            5100 Westheimer
            Houston, Texas 77056
            Attention: Mauricio Alvardo, Esq., General Counsel
            Facsimile No.: (713) 964-5142

                              and

            Greenberg Traurig
            1300 Connecticut Avenue, N.W.
            Suite 1000
            Washington, DC 20036
            Attention: Richard Rubin, Esq.
            Facsimile No.: (202) 261-0161

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      (c)   if to IWAV:

            Thomas W. Hubbs
            Executive Vice President and Chief Financial Officer
            312 Constitution Drive
            Menlo Park, CA 94025
            Facsimile No: (650)

            with copies to:

            Robin E. Foor
            Vice President and General Counsel
            312 Constitution Drive
            Menlo Park, CA 94025
            Facsimile No.: (650) 321-6381

or, in any such case, at such other address or addresses as shall have been
furnished in writing by such party to the others.

      7.6 SEVERABILITY. The invalidity, illegality or unenforceability of one or
more of the provisions of this Agreement in any jurisdiction shall not affect
the validity, legality or enforceability of the remainder of this Agreement in
such jurisdiction or the validity, legality or enforceability of this Agreement,
including any such provision, in any other jurisdiction, it being intended that
all rights and obligations of the parties hereunder shall be enforceable to the
fullest extent permitted by law.

      7.7 HEADINGS. The headings of the sections of this Agreement are inserted
for convenience only and shall not constitute a part of this Agreement.

      7.8 FURTHER ASSURANCES. Each party hereto shall do and perform or cause to
be done and performed all such further acts and things and shall execute and
deliver all such other agreements, certificates, instruments, and documents as
any other party hereto reasonably may request in order to carry out the intent
and accomplish the purposes of this Agreement and the consummation of the
transactions contemplated hereby.

      7.9 SPECIFIC PERFORMANCE. Each of the parties hereto acknowledges and
agrees that in the event of any breach of this Agreement, the non-breaching
party would be irreparably harmed and could not be made whole by monetary
damages. It is accordingly agreed that the parties hereto will waive the defense
in any action for specific performance that a remedy at law would be adequate
and that the parties hereto, in addition to any other remedy to which they may
be entitled at law or in equity, shall be entitled to compel specific
performance of this Agreement in

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any action instituted in any court of the United States or any state thereof
having subject matter jurisdiction of such action.

      7.10 RIGHTS CUMULATIVE; WAIVER. The rights and remedies of the parties
under his Agreement shall be cumulative and not exclusive of any rights or
remedies which any party hereto would otherwise have hereunder or at law or in
equity or by statute, and no failure or delay by any such party in exercising
any right or remedy shall impair any such right or remedy or operate as a waiver
of such right or remedy, nor shall any single or partial exercise of any power
or right preclude such party's other or further exercise or the exercise of any
other power or right. The waiver by any party hereto of a breach of any
provision of this Agreement shall not operate or be construed as a waiver of any
preceding or succeeding breach and no failure by any party hereto to exercise
any right or privilege hereunder shall be deemed a waiver of such party's rights
or privileges hereunder or shall be deemed a waiver of such party's rights to
exercise the same at any subsequent time or times hereunder.

      7.11 TERMINATION. This Agreement shall terminate upon the earliest to
occur of any one of the following events:

            (a) the liquidation, dissolution or indefinite cessation of the
business operations of the Company,

            (b) the execution by the Company of a general assignment for the
benefit of creditors or the appointment of a receiver or trustee to take
possession of the property and assets of the Company,

            (c) immediately prior to any Corporate Transaction,

            (d) immediately prior to the consummation of a Qualified IPO, or

            (e) the written mutual agreement of the parties hereto.

      7.12 MISCELLANEOUS; CONSTRUCTION. The use of the singular or plural or
masculine, feminine or neuter gender shall not be given an exclusionary meaning
and, where applicable, shall be intended to include the appropriate number or
gender, as the case may be.

      7.13 NO IMPAIRMENT. Nothing in this Agreement shall impair or otherwise
adversely affect the rights accorded TWS and Stanford in that Shareholders
Rights Agreement dated as of March 15, 2000 between the Company, Stanford and
TWS.

      7.14 COUNTERPARTS. This Agreement may be executed in two or more
counterparts, each of which shall be deemed to be an original, and all of which
when taken together shall constitute one and the same instrument.

      7.15 GOVERNING LAW; ARBITRATION; VENUE; EQUITABLE RELIEF.

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      (a) GOVERNING LAW. This Agreement will be governed by and construed and
      enforced in accordance with the laws of the State of Georgia, without
      regard to principles of conflicts of laws. All disputes, claims, and
      controversies concerning the interpretation or enforcement of this
      Agreement, or any other matter arising out of or relating to this
      Agreement, will be arbitrated pursuant to the provisions of this Section
      7.14.

      (b) INITIATION OF ARBITRATION PROCEEDING. Any party to this Agreement may
      initiate an arbitration proceeding by making a written demand for
      arbitration and serving a notice of said demand upon the adverse party in
      the manner provided in this Agreement, and upon the San Francisco regional
      office of J A M S ("JAMS"). A written response to the demand must be
      served upon the initiating party and JAMS within ten (10) days of the
      adverse party's receipt of the demand.

      (c) SELECTION OF ARBITRATOR. The arbitration will be conducted by a single
      arbitrator who is a retired judge associated with the San Francisco
      regional office of JAMS. The arbitrator will be selected in accordance
      with the JAMS Rules of Practice & Procedure for Arbitration then in effect
      (the "JAMS Rules") within fourteen (14) days of the service of the written
      demand for arbitration. If the parties cannot so agree upon the selection
      of the arbitrator within the fourteen (14) day period, then the
      arbitration will be conducted by a single arbitrator who will be a retired
      judge associated with the San Francisco regional office of JAMS, and who
      will be selected by JAMS within five (5) days of the service of a written
      request that JAMS select the arbitrator.

      (d) VENUE. Any arbitration proceeding instituted under the provisions of
      this Agreement will be conducted in San Francisco through the San
      Francisco regional office of JAMS.

      (e) ARBITRATION HEARING AND AWARD. The arbitration hearing will be
      conducted within thirty (30) days of the appointment of the arbitrator.
      The arbitration will be conducted in accordance with the JAMS Rules. The
      arbitrator's award will be conclusive and binding on the parties. The
      arbitrator's award will provide, among other things, that the prevailing
      party in the arbitration is entitled to recover from the adverse party its
      costs and expenses incurred in connection therewith including, without
      limitation, attorneys' fees as determined by the arbitrator, the costs of
      the arbitration, and actual out-of-pocket expenses including, without
      limitation, expert witness and consultants' fees. Judgment upon the
      arbitrator's award may be entered in any court of competent jurisdiction.

      (f) EQUITABLE RELIEF. The Arbitrator has the authority to grant the
      parties equitable relief on such terms and conditions as it deems
      reasonably necessary or appropriate.

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      IN WITNESS WHEREOF, the undersigned have executed this Agreement as of the
date set forth above.

                                         TELECOM WIRELESS SOLUTIONS, INC.

                                         By:____________________________________
                                               David Lasier
                                               Chief Executive Officer

                                         BLUE SKY COMMUNICATIONS, INC.

                                         By:____________________________________
                                               David Lasier
                                               Chief Executive Officer

                                         STANFORD FINANCIAL GROUP COMPANY

                                         By:____________________________________
                                               James M. Davis
                                               Chief Financial Officer

                                         interWAVE COMMUNICATIONS
                                               INTERNATIONAL, LTD.

                                         By:____________________________________
                                               Priscilla Lu
                                               Chief Executive Officer

                                       14<Page>

                                                                     EXHIBIT 4.4

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

                          BLUE SKY COMMUNICATIONS, INC.

                          REGISTRATION RIGHTS AGREEMENT

                           DATED AS OF OCTOBER 2, 2000

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

<Page>

                          REGISTRATION RIGHTS AGREEMENT

      THIS REGISTRATION RIGHTS AGREEMENT (the "Agreement"), is made and entered
into as of October 2, 2000, among BLUE SKY COMMUNICATIONS, INC., a Georgia
corporation (the "Company"), INTERWAVE COMMUNICATIONS INTERNATIONAL, LTD., a
Bermuda corporation (the "Investor"), Telecom Wireless Solutions, Inc., a
Delaware corporation ("TWS") and Stanford Financial Group Company, a Florida
Corporation ("Stanford")(collectively, TWS and Stanford shall be referred to as
the "Shareholders").

                              W I T N E S S E T H:

      WHEREAS, the Company and the Investors have entered into a Stock Purchase
Agreement (the "Purchase Agreement"), dated as of the date hereof, pursuant to
which the Investor has agreed to purchase, and the Company has agreed to issue,
1,175,000 shares of the Company's Series A Convertible Preferred Stock, par
value $0.001 per share (the "Purchased Stock"); and

      WHEREAS, in connection with the Purchase Agreement, the Company has agreed
to grant the Investor and Shareholders certain rights concerning registration of
the Company's Common Stock as more particularly set forth herein.

      NOW THEREFORE, in consideration of the premises and the mutual covenants
and agreements contained herein and for other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties hereto
agree as follows:

1. DEFINITIONS. For purposes of this Agreement, the following terms shall have
the following respective meanings:

(a) "COMMISSION" shall mean the Securities and Exchange Commission or any other
federal agency at the time administering the Securities Act.

(b) "COMMON STOCK" shall mean the common stock, par value $ 0.001 per share, of
the Company.

(c) "HOLDER" shall mean the Investor and Shareholders who hold Registrable
Securities or Purchased Stock and any person holding Registrable Securities or
Purchased Stock to whom the rights under this Agreement have been transferred in
accordance with Section 11 hereof.

(d) "INITIATING HOLDERS" shall mean the Investor, Shareholders or transferees of
such parties under Section 11 hereof who in the aggregate are Holders of greater
than thirty percent (30%) of the Registrable Securities.

(e) "MAJORITY HOLDER" shall mean the Investor, Shareholders or transferees of
such parties under Section 11 hereof who in the aggregate are Holders of greater
than (50%) of the Registrable Securities.

<Page>

(f) "PREFERRED STOCK" shall mean the preferred stock, par value $0.001 per
share, of the Company.

(g) "QUALIFYING IPO" shall mean an underwritten public offering of shares of the
Company's Common Stock at a price per share that is not less than Eight and
40/100 Dollars ($8.40) and with aggregate offering proceeds of at least
Twenty-Five Million Dollars ($25,000,000).

(h) "REGISTER," "REGISTERED" and "REGISTRATION" refer to a registration effected
by preparing and filing with the Commission a registration statement in
compliance with the Securities Act, and the declaration or ordering of the
effectiveness of such registration statement.

(i) "REGISTRABLE SECURITIES" means (i) any Common Stock of the Company issued or
issuable in respect of the Purchased Stock (the "Conversion Stock"); and (ii)
any other securities issued or issuable pursuant to the conversion of the
Purchased Stock or the Conversion Stock upon any stock split, stock dividend,
recapitalization, or similar event, or any Common Stock otherwise issued or
issuable with respect to the Purchased Shares, any convertible notes, options or
warrants of the Company held by the Investor or Shareholders.

(j) "REGISTRATION EXPENSES" shall mean all expenses, except Selling Expenses as
defined below, incurred by the Company in complying with Sections 4 and 5
hereof, including, without limitation, all registration, qualification and
filing fees, printing expenses, escrow fees, fees and disbursements of counsel
for the Company, blue sky fees and expenses, the expense of any special audits
incident to or required by any such registration (but excluding the compensation
of regular employees of the Company which shall be paid in any event by the
Company) and the reasonable fees and disbursements of one counsel for all
Holders.

(k) "SECURITIES ACT" shall mean the Securities Act of 1933, as amended.

(l) "SELLING EXPENSES" shall mean all underwriting discounts, selling
commissions, stock transfer taxes applicable to the securities registered by the
Holders and, except as set forth in the definition of Registration Expenses, all
fees and disbursements of special counsel for any Holder.

2. RESTRICTIONS ON TRANSFERABILITY. The Purchased Stock, the Conversion Stock or
any other Common Stock shall not be sold, assigned, pledged or in any way
transferred except upon satisfaction of the conditions specified in the
Shareholders' Rights Agreement of even date herewith among the parties hereto
and other shareholders described therein (as amended from time to time, the
"Shareholders Agreement"), which conditions are intended to ensure compliance
with the provisions of the Securities Act. The Investor and Shareholders will
cause any proposed purchaser, assignee, pledgee or transferee of the Purchased
Stock, Conversion Stock or any other Common Stock held by such parties to agree
to take and hold such securities subject to the provisions and conditions of
such Shareholders Agreement for so long as such Shareholders Agreement is in
effect.

3. RESTRICTIONS ON REGISTRATION. The registration rights referred to in this
Agreement apply only to shares of Common Stock, and shall not apply to any
Preferred Stock of the Company. Notwithstanding the foregoing, in the event of a
notice of proposed registration pursuant to Section 5(a)(i) hereof, the Holder
of the Preferred Stock may exercise its rights of conversion and

                                       2
<Page>

elect to register the Common Stock received pursuant to such conversion and the
Company shall take all steps reasonably appropriate herewith in order to insure
that the Holder's rights to convert and register are protected.

4. REQUESTED REGISTRATION.

(A) REQUEST FOR REGISTRATION. Not later than the earlier of the third (3rd)
anniversary of the closing of the Purchase Agreement or six (6) months after a
Qualifying IPO, the Initiating Holders shall be entitled to three demand
registrations of their Registrable Securities, provided that each Holder is only
entitled to one such request by providing a written request that the Company
effect a registration under the Securities Act with respect to not less than
thirty percent (30%) of the Registrable Securities; provided, however, that the
registration must be declared or ordered effective to count as the one (1) time
demand registration right. Upon such a request, the Company shall:

(i) promptly give written notice of the proposed registration, qualification or
compliance to all other Holders; and

(ii) as soon as practicable, use its commercially reasonable best efforts to
effect such registration (including, without limitation, appropriate
qualification under applicable blue sky or other state securities laws and
appropriate compliance with applicable regulations issued under the Securities
Act and any other governmental requirements or regulations) as may be so
requested and as would permit or facilitate the sale and distribution of all or
such portion of such Registrable Securities as are specified in such request,
together with all or such portion of the Registrable Securities of any Holder or
Holders joining in such request as are specified in a written request received
by the Company within sixty (60) days after receipt of such written notice from
the Company;

provided, however, that the Company shall not be obligated to take any action to
effect any such registration, qualification or compliance pursuant to this
Section 4:

                        (A)   Prior to the date that is six (6) months after the
                              effective date of the Company's first registered
                              public offering of its stock;

                        (B)   If the Company, within twenty (20) days of the
                              receipt of the request from the Initiating
                              Holders, gives notice of its bona fide intention
                              to effect the filing of a registration statement
                              with the Commission within one hundred twenty
                              (120) days of the receipt of such request (other
                              than with respect to a registration statement
                              relating to a Rule 145 transaction, an offering
                              solely to employees or any other registration
                              which is not appropriate for the registration of
                              Registrable Securities);

                                       3
<Page>

                        (C)   With respect to a Qualifying IPO, during the
                              period starting with the date sixty (60) days
                              prior to the Company's estimated date of filing
                              and ending on the date six (6) months immediately
                              following the effective date of the Company's
                              Qualifying IPO. With respect to any other public
                              offering, during the period starting with the date
                              sixty (60) days prior to the Company's estimated
                              date of filing and ending on the date three (3)
                              months immediately following the effective date of
                              any registration statement pertaining to
                              securities of the Company (other than a
                              registration of securities in a Rule 145
                              transaction or with respect to an employee benefit
                              plan); provided that the Company is actively
                              employing in good faith all commercially
                              reasonable efforts to cause such registration
                              statement to become effective;

                        (D)   If the anticipated aggregate offering price of the
                              Registrable Securities, net of underwriting
                              discounts and commissions, does not exceed Three
                              Million Dollars ($3,000,000); or

                        (E)   If the Company shall furnish to such Holders a
                              certificate signed by the President of the Company
                              stating that in the good faith judgment of the
                              Board of Directors of the Company it would be
                              seriously detrimental to the Company or its
                              shareholders for a registration statement to be
                              filed in the near future, in which case the
                              Company's obligation to use its commercially
                              reasonable best efforts to register, qualify or
                              comply under this Section 4 shall be deferred for
                              a period not to exceed one hundred twenty (120)
                              days from the date of receipt of the written
                              request from the Initiating Holders, provided that
                              the right to delay such request shall be exercised
                              by the Company not more than once in any twelve
                              (12) month period.

      Subject to the foregoing clauses (A) through (E), the Company shall use
its commercially reasonable best efforts to file a registration statement
covering the Registrable Securities so requested to be registered as soon as
practicable after receipt of the request or requests of the Initiating Holders.

(B) UNDERWRITING. In the event that a registration pursuant to this Section 4 is
for a registered public offering involving an underwriting, the Company shall so
advise the Holders as part of the notice given pursuant to Section 4(a)(i). In
such event, the right of any Holder to registration pursuant to this Section 4
shall be conditioned upon such Holder's participation in the underwriting
arrangements required by this Section 4, and the inclusion of such Holder's
Registrable Securities in the underwriting to the extent requested shall be
limited as provided herein.

                                       4
<Page>

      The Company shall (together with all Holders proposing to distribute their
securities through such underwriting) enter into an underwriting agreement in
customary form with the managing underwriter(s) selected for such underwriting
by a majority in interest of the Initiating Holders, but subject to the
Company's reasonable approval. Notwithstanding any other provision of this
Section 4, if the managing underwriter(s) advise(s) the Initiating Holders or
the Company in writing that marketing factors require a limitation of the number
of shares to be underwritten, then the Company shall so advise all Holders
participating and the number of shares of Registrable Securities that may be
included in the registration and underwriting shall be allocated among all
Holders thereof in proportion, as nearly as practicable, to the respective
amounts of Registrable Securities held by such Holders at the time of filing the
registration statement. No Registrable Securities excluded from the underwriting
by reason of the underwriters' marketing limitation shall be included in such
registration. To facilitate the allocation of shares in accordance with the
above provisions, the Company or the underwriters may round the number of shares
allocated to any Holder to the nearest one-hundred (100) shares. Upon the
request of the managing underwriter(s), the Holders shall not effect any sale or
distribution of any equity securities of the Company during the six (6) months
after such registration has become effective.

      If any Holder disapproves of the terms of the underwriting, such person
may elect to withdraw therefrom by written notice to the Company, the managing
underwriter and the Initiating Holders. The Registrable Securities so withdrawn
shall also be withdrawn from registration, and such Registrable Securities shall
not be transferred in a public distribution prior to ninety (90) days after the
effective date of such registration, or such other shorter period of time as the
underwriters may require. The Company may include shares of Common Stock held by
shareholders other than Holders in a registration statement pursuant to Section
4 or 5 if, and to the extent that, the amount of Registrable Securities
otherwise includible in such registration statement would not thereby be
diminished.

5. COMPANY REGISTRATION.

(A) NOTICE OF REGISTRATION. If at any time or from time to time the Company
shall determine to register any of its securities, either for its own account or
for the account of a security holder or holders, other than (1) a registration
relating solely to employee benefit plans; (2) a registration relating solely to
a Commission Rule 145 transaction; or (3) any other registration which is not
appropriate for the registration for the Registrable Securities for sale to the
public, then the Company will:

(i) promptly give to each Holder written notice thereof; and

(ii) include in such registration (and any related qualification under blue sky
laws or other compliance), and in any underwriting involved therein, all the
Registrable Securities specified in written request or requests, made within
twenty (20) days after receipt of such written notice from the Company, by any
Holder.

(B) UNDERWRITING. If the registration of which the Company gives notice is for a
registered public offering involving an underwriting, the Company shall so
advise the Holders as a part of the written notice given pursuant to Section
5(a)(i). In such event the right of any Holder to

                                       5
<Page>

registration pursuant to this Section 5 shall be conditioned upon such Holder's
participation in such underwriting and the inclusion of such Holder's
Registrable Securities in the underwriting to the extent provided herein. All
Holders proposing to distribute their securities through such underwriting shall
(together with the Company and any other shareholders distributing their
securities through such underwriting) enter into an underwriting agreement in
customary form with the managing underwriter selected for such underwriting by
the Company. Notwithstanding any other provision of this Section 5, if the
managing underwriter determines that marketing factors require a limitation of
the number of shares to be underwritten, the managing underwriter may limit the
Registrable Securities that may be included in the registration and the number
of shares of Registrable Securities that may be included in the registration
shall be allocated among all Holders in proportion, as nearly as practicable, to
the respective amounts of Registrable Securities held by such Holders at the
time of filing the registration statement. To facilitate the allocation of
shares in accordance with the above provisions, the Company may round the number
of shares allocated to any Holder or other shareholder to the nearest one
hundred (100) shares. If any Holder or other shareholder disapproves of the
terms of any such underwriting, such Holder or other shareholder may elect to
withdraw therefrom by written notice to the Company and the managing
underwriter. Any securities excluded or withdrawn from such underwriting shall
be withdrawn from such registration, and shall not be transferred in a public
distribution prior to ninety (90) days after the effective date of the
registration statement relating thereto, or such other shorter period of time as
the underwriters may require. The Company may include shares of Common Stock
held by shareholders other than Holders in a registration statement pursuant to
Section 4 or 5 if, and to the extent that, the amount of Registrable Securities
otherwise includible in such registration statement would not thereby be
diminished.

(C) RIGHT TO TERMINATE REGISTRATION. The Company shall have the right to
terminate or withdraw any registration initiated by it under this Section 5
prior to the effectiveness of such registration whether or not any Holder has
elected to include securities in such registration.

6. LIMITATIONS ON SUBSEQUENT REGISTRATION RIGHTS. The Company shall not enter
into any agreement granting any holder or prospective holder of any securities
of the Company registration rights with respect to such securities unless (a)
such rights are subordinate to or on parity with the rights of the Investors and
Shareholders contained in this Agreement, or (b) are approved by the Majority
Holders, which approval shall not be unreasonably withheld or delayed.

7. EXPENSES OF REGISTRATION. All Registration Expenses incurred in connection
with a registration pursuant to Section 4 or Section 5, including the fees for
one special counsel attorney for the selling shareholders, shall be borne by the
Company. Unless otherwise stated, all Selling Expenses relating to securities
registered on behalf of the Holders and any other shareholders of the Company
shall be borne by the Holders of such securities and such other shareholders pro
rata on the basis of the number of shares so registered.

8. REGISTRATION PROCEDURES. In the case of each registration, qualification or
compliance effected by the Company pursuant to this Agreement, the Company will
keep each Holder advised in writing as to the initiation of each registration,
qualification and compliance and as to the completion thereof. At its expense
the Company shall:

                                       6
<Page>

(a) Keep such registration, qualification or compliance pursuant to this
Agreement effective for a period of six (6) months or until the Holder or
Holders have completed the distribution described in the Registration Statement
relating thereto, whichever occurs first; and

(b) Furnish such number of Prospectuses and such other documents incident
thereto as the Holder from time to time may reasonably request.

9. INFORMATION BY HOLDER. The Holder or Holders of Registrable Securities
included in any registration shall promptly furnish the Company such information
regarding such Holder or Holders, the Registrable Securities held by them and
the distribution proposed by such Holder or Holders as the Company may request
in writing and as shall be required in connection with any registration,
qualification or compliance referred to in this Agreement.

10. INDEMNIFICATION.

(a) The Company will indemnify each Holder, each of its officers, directors and
partners, and each person controlling such Holder within the meaning of Section
15 of the Securities Act, with respect to which registration, qualification or
compliance has been effected pursuant to this Agreement, and each underwriter,
if any, and each person who controls any underwriter within the meaning of
Section 15 of the Securities Act, against all expenses, claims, losses, damages
or liabilities (or actions in respect thereof), including any of the foregoing
incurred in settlement of any litigation, commenced or threatened, arising out
of or based on any untrue statement (or alleged untrue statement) made by the
Company of a material fact contained in any registration statement, prospectus,
offering circular or other document, or any amendment or supplement thereto,
incident to any such registration, qualification or compliance, or based on any
omission (or alleged omission) made by the Company to state therein a material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances in which they were made, not misleading, or any
violation by the Company of the Securities Act or any rule or regulation
promulgated under the Securities Act applicable to the Company in connection
with any such registration, qualification or compliance, and the Company will
reimburse each such Holder, each of its officers and directors, and each person
controlling such Holder, each such underwriter and each person who controls any
such underwriter, for any legal and any other expenses reasonably incurred in
connection with investigating, preparing or defending any such claim, loss,
damage, liability or action; provided that the Company will not be liable in any
such case to the extent that any such claim, loss, damage, liability or expense
arises out of or is based on any untrue statement or omission or alleged untrue
statement or omission, made in reliance upon and in conformity with written
information furnished to the Company by an instrument duly executed by such
Holder, controlling person or underwriter and stated to be specifically for use
therein.

                                       7
<Page>

(b) Each Holder will, if Registrable Securities held by such Holder are included
in the securities as to which such registration, qualification or compliance is
being effected, indemnify the Company, each of its directors and officers, each
underwriter, if any, of the Company's securities covered by such a registration
statement, each person who controls the Company or such underwriter within the
meaning of Section 15 of the Securities Act, and each other such Holder, each of
its officers and directors and each person controlling such Holder within the
meaning of Section 15 of the Securities Act, against all claims, losses, damages
and liabilities (or action in respect thereof) arising out of or based on (i)
any untrue statement (or alleged untrue statement) of a material fact contained
in any such registration statement, prospectus, offering circular or other
document, or 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, and will reimburse the Company, such Holders, such directors,
officers, persons, underwriters or control persons for any legal or any other
expenses reasonably incurred in connection with investigating or defending any
such claim, loss, damage, liability or action, in each case to the extent, but
only to the extent, that such untrue statement (or alleged untrue statement) or
omission (or alleged omission) is made in such registration statement,
prospectus, offering circular or other document in reliance upon and in
conformity with written information furnished to the Company by an instrument
duly executed by such Holder and stated to be specifically for use therein; or
(ii) any violation by such Holder of the Securities Act or any rule or
regulation promulgated under the Securities Act applicable to Holder in
connection with any such registration, qualification or compliance.
Notwithstanding the foregoing, the liability of each Holder under this
subsection (b) shall be limited to an amount equal to the initial public
offering price of the shares sold by such Holder, unless such liability arises
out of or is based on willful conduct by such Holder.

(c) Each party entitled to indemnification under this Section 10 (the
"Indemnified Party") shall give notice to the party required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the Indemnifying Party to assume the defense or settlement of any such
claim or any litigation resulting therefrom; provided that counsel for the
Indemnifying Party, who shall conduct the defense of such claim or litigation,
shall be approved by the Indemnified Party (whose approval shall not
unreasonably be withheld or delayed), and the Indemnified Party may participate
in such defense at such party's expense, and provided further that the failure
of any Indemnified Party to give notice as provided herein shall not relieve the
Indemnifying Party of its obligations under this Agreement unless the failure to
give such notice is materially prejudicial to an Indemnifying Party's ability to
defend or settle such action and provided further, that the Indemnifying Party
shall not assume the defense for matters as to which there is a conflict of
interest or separate and different defenses. No Indemnifying Party, in the
defense of any such claim or litigation, shall, except with the consent of each
Indemnified Party, consent to entry of any judgment or enter into any settlement
which does not include as an unconditional term thereof the giving by the
claimant or plaintiff to such Indemnified Party of a release from all liability
in respect to such claim or litigation.

11. TRANSFER OF REGISTRATION RIGHTS. The rights to cause the Company to register
securities granted under this Agreement may be assigned or transferred at any
time without the prior written consent of the Company but with prior notice to
Company to a transferee or assignee in connection with any transfer or
assignment of Registrable Securities by the Investor or

                                       8
<Page>

Shareholders; provided that such transferee or assignee (a) is a partner or
retired partner of the Investor or Shareholders that is a partnership; (b) is an
immediate family member or trust for the benefit of the Investor or
Shareholders; or (c) any subsidiary of the Investor or Shareholders which is a
corporation. In addition to the foregoing, such rights may be assigned to any
other transferee or assignee with the written consent of the Company, which
consent shall not be unreasonably delayed or withheld, in connection with any
permitted transfer or assignment of Registrable Securities by an Investor or the
Shareholders; provided that such transfer may otherwise be effected in
accordance with applicable securities laws.

12. TERMINATION OF REGISTRATION RIGHTS. All rights conferred in this Agreement
to the Investor, TWS and Stanford shall terminate for such party at such time as
the party owns securities constituting less than 5% of the outstanding voting
stock of the Company and when all shares held by the party (or its assignee) may
be sold under Rule 144 promulgated under the Securities Act within a ninety (90)
day period.

13. AMENDMENTS AND WAIVERS. This Agreement may be amended, or any provision
herein waived, only with the prior written consent of all parties to this
Agreement who may be adversely affected by such amendment or waiver, and their
permitted successors and assigns. Any such permitted successors and assigns,
upon execution of appropriate documentation as determined by the Company, shall
be deemed to be an "Investor" hereunder and shall have the same (but not
superior) rights and the same obligations under this Agreement as each other
Investor and the capital stock held by such other Investor shall be deemed to be
Registrable Securities.

14. NOTICES. All notices, demands or other communications hereunder shall be in
writing and shall be deemed given when delivered personally, mailed by certified
mail (return receipt requested), sent by overnight courier service or telecopied
(transmission confirmed), or otherwise actually delivered:

            If to the Company     Blue Sky Communications, Inc.
            or TWS:               100 North Point Center East, Suite 300
                                  Alpharetta, Georgia 30022
                                  Attention: David D. Lasier, Chief Executive
                                             Officer
                                  Telephone: (678) 366-0104
                                  Facsimile: (678) 366-9659

            With copies to:       Blue Sky Communications, Inc.
                                  100 North Point Center East, Suite 300
                                  Alpharetta, Georgia  30022
                                  Attention: Richard A. Cohen, General Counsel
                                  Telephone: (678) 366-0104
                                  Facsimile: (678) 366-9659

                                       9
<Page>

            If to the Investor:   interWAVE Communications International, Ltd.
                                  Clarendon House, 2 Church Street, HM DX
                                  Hamilton, Bermuda
                                  Attention: Thomas W. Hubbs, Executive Vice
                                             President and Chief
                                  Financial Officer
                                  Telephone: (650) 838-2196
                                  Facsimile: (650) 321-6570

            With copies to:       Interwave Communications, Inc.
                                  312 Constitution Drive
                                  Menlo Park, CA 94025
                                  Attention: Robin E. Foor, Vice President and
                                             General Counsel
                                  Telephone: (650) 838-2168
                                  Facsimile: (650) 321-6381

            If to Stanford:       Stanford Financial Group Company
                                  5100 Westheimer
                                  Houston, TX 77056
                                  Attention: James M. Davis, Chief Financial
                                             Officer
                                  Facsimile: (713) 964-5142

            With copies to:       Stanford Financial Group Company
                                  Yolanda M. Suarez
                                  Chief of Staff
                                  Facsimile: (305) 347-9141

            and:                  Greenberg Traurig
                                  Richard Rubin, Esq.
                                  800 Connecticut Avenue
                                  Washington, D.C. 20006
                                  Facsimile: (202) 261-0161

or at such other address and numbers as may have been furnished by such person
in writing to the Company, Investor or Shareholders.

15. ASSIGNMENT. This Agreement shall be binding upon and inure to the benefit of
and be enforceable by the parties hereto and their respective successors and
assigns.

16. DESCRIPTIVE HEADINGS. The descriptive headings of the several sections and
paragraphs of this Agreement are inserted for reference only and shall not limit
or otherwise affect the meaning hereof.

17. COUNTERPARTS. This Agreement may be executed simultaneously in any number of
counterparts, each of which shall be deemed an original, but all such
counterparts together shall constitute one and the same instrument.

                                       10
<Page>

18. SEVERABILITY. In the event that any one or more of the provisions contained
herein, or the application thereof in any circumstances, is held invalid,
illegal or unenforceable in any respect for any reason, the validity, legality
and enforceability of any such provision in every other respect and of the
remaining provisions contained herein shall not be in any way impaired thereby,
it being intended that all of the rights and privileges of the holders of
Registrable Securities shall be enforceable to the fullest extent permitted by
law.

19. GOVERNING LAW; ARBITRATION; VENUE; EQUITABLE RELIEF.

(a) GOVERNING LAW. This Agreement will be governed by and construed and enforced
in accordance with the laws of the State of Georgia, without regard to
principles of conflicts of laws. All disputes, claims, and controversies
concerning the interpretation or enforcement of this Agreement, or any other
matter arising out of or relating to this Agreement, will be arbitrated pursuant
to the provisions of this Section 20.

(b) INITIATION OF ARBITRATION PROCEEDING. Any party may initiate an arbitration
proceeding by making a written demand for arbitration and serving a notice of
said demand upon the adverse party in the manner provided in this Agreement, and
upon the San Francisco regional office of J A M S ("JAMS"). A written response
to the demand must be served upon the initiating party and JAMS within ten (10)
days of the adverse party's receipt of the demand.

(c) SELECTION OF ARBITRATOR. The arbitration will be conducted by a single
arbitrator who is a retired judge associated with the San Francisco regional
office of JAMS. The arbitrator will be selected in accordance with the JAMS
Rules of Practice & Procedure for Arbitration then in effect (the "JAMS Rules")
within fourteen (14) days of the service of the written demand for arbitration.
If the parties cannot so agree upon the selection of the arbitrator within the
fourteen (14) day period, then the arbitration will be conducted by a single
arbitrator who will be a retired judge associated with the San Francisco
regional office of JAMS, and who will be selected by JAMS within five (5) days
of the service of a written request that JAMS select the arbitrator.

(d) VENUE. Any arbitration proceeding instituted under the provisions of this
Agreement will be conducted in San Francisco through the San Francisco regional
office of JAMS.

(e) ARBITRATION HEARING AND AWARD. The arbitration hearing will be conducted
within thirty (30) days of the appointment of the arbitrator. The arbitration
will be conducted in accordance with the JAMS Rules. The arbitrator's award will
be conclusive and binding on all parties. The arbitrator's award will provide,
among other things, that the prevailing party in the arbitration is entitled to
recover from the adverse party its costs and expenses incurred in connection
therewith including, without limitation, attorneys' fees as determined by the
arbitrator, the costs of the arbitration, and actual out-of-pocket expenses
including, without limitation, expert witness and consultants' fees. Judgment
upon the arbitrator's award may be entered in any court of competent
jurisdiction.

(f) EQUITABLE RELIEF. The Arbitrator has the authority to grant equitable relief
on such terms and conditions as it deems reasonably necessary or appropriate.

                                       11
<Page>

20. NO IMPAIRMENT. Nothing in this Agreement shall impair or otherwise adversely
affect the rights accorded TWS and Stanford in that Shareholders Rights
Agreement dated as of March 15, 2000 between the Company, Stanford and TWS.

                         [SIGNATURES ON FOLLOWING PAGES]

                                       12
<Page>

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

                                        "COMPANY"
                                        BLUE SKY COMMUNICATIONS, INC.

                                        By: /s/ David Lasier
                                           -----------------------------------
                                              David Lasier
                                              Chief Executive Officer

                                        "INVESTOR"
                                        INTERWAVE COMMUNICATIONS
                                        INTERNATIONAL, LTD.

                                        By: /s/ Priscilla Lu
                                           -----------------------------------
                                              Priscilla Lu
                                              Chief Executive Officer

                                        "TWS"
                                        TELECOM WIRELESS SOLUTIONS, INC.

                                        By:    /s/ David D. Lasier
                                              ---------------------------------
                                        Name:  David D. Lasier
                                        Title: Chief Executive Officer

                                        "STANFORD"
                                        STANFORD FINANCIAL GROUP COMPANY

                                        By:    /s/ James M. Davis
                                              ---------------------------------
                                        Name:  James M. Davis
                                        Title: Chief Financial Officer

                                       13

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