AERIAL COMMUNICATIONS INC
8-K, 1998-04-29
RADIOTELEPHONE COMMUNICATIONS
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                                    FORM 8-K

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934


       Date of Report (Date of earliest event reported): February 5, 1998
                                                         ----------------
      
                           Aerial Communications, Inc.
                           ---------------------------
             (Exact name of registrant as specified in its charter)


     Delaware                  0-28262                     39-1706857
     --------                  -------                     ----------
   (State or other           (Commission                 (IRS Employer
    jurisdiction of          File Number)               Identification No.)
    incorporation)

                                                     
                                   
   8410 West Bryn Mawr, Suite 1100, Chicago, Illinois              60631
- -------------------------------------------------------          ----------
       (Address of principal executive offices)                  (Zip Code)

Registrant's telephone number, including area code:  (773) 399-4200


                                 Not Applicable
                                 --------------
          (Former name or former address, if changed since last report)








<PAGE>




Item 5.   Other Events.
          -------------
         
         This  Current  Report  on Form 8-K is being  filed for the  purpose  of
filing  the Trust  Indenture  Agreement  dated  February  5, 1998,  between  the
Company, as issuer, Telephone and Data Systems, Inc., as guarantor and The First
National Bank of Chicago,  as trustee related to the $219,975,000  Series B Zero
Coupon Notes Due 2008.


Item 7.   Financial Statements and Exhibits
          ---------------------------------

(c)      Exhibits
         --------

         The exhibits  accompanying  this report are listed in the  accompanying
Exhibit Index.































                                        2

<PAGE>



                                   SIGNATURES


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


Date:    April 29, 1998             AERIAL COMMUNICATIONS, INC.
                                    (Registrant)





                                    By: /s/ J. Clarke  Smith
                                      ------------------------------
                                    J. Clarke Smith
                                    Vice President - Finance and Administration,
                                    Chief Financial Officer and Treasurer





















                                        3

<PAGE>




                                  EXHIBIT INDEX


Exhibit Number                      Description of Exhibit
- -------------                       ----------------------

    4.1                             The Trust  Indenture  between the Company as
                                    issuer,  Telephone and Data Systems, Inc. as
                                    guarantor,  and The First  National  Bank of
                                    Chicago,   as  trustee  for  the   Company's
                                    $219,975,000  Series B Zero Coupon Notes Due
                                    2008.



































                                        


<PAGE>




                                                                     Exhibit 4.1


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









                          Aerial Communications, Inc.,
                                    as Issuer



                        Telephone and Data Systems, Inc.,
                                  as Guarantor


                                       AND


                       The First National Bank of Chicago,
                                   as Trustee


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


                                    Indenture


                          Dated as of February 5, 1998


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


                                  $219,975,000

                       Series B Zero Coupon Notes Due 2008










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

<PAGE>






                                TABLE OF CONTENTS

                                                                       Page
                                                                       ----

                                   ARTICLE ONE

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

SECTION 1.1     Certain Terms Defined...................................  1
                Agent Member............................................  2
                Authenticating Agent....................................  2
                Board of Directors......................................  2
                Board Resolution........................................  2
                Business Day............................................  2
                Capital Stock...........................................  2
                Capitalized Rent........................................  2
                Consolidated Capitalization.............................  2
                Corporate Trust Office..................................  2
                Debt ...................................................  3
                Definitive Notes........................................  3
                Depositary..............................................  3
                Event of Default........................................  3
                Exchange Act............................................  3
                Funded Debt.............................................  3
                Guarantee ..............................................  3
                Global Note.............................................  3
                Guarantor ..............................................  3
                Government Obligations..................................  3
                Holder    ..............................................  4
                Holder of Notes.........................................  4
                Noteholder..............................................  4
                IAI       ..............................................  4
                Indenture ..............................................  4
                Indenture Obligations...................................  4
                Issuer    ..............................................  4
                Issuer Order............................................  4
                Issue Price.............................................  4
                Lien      ..............................................  4
                Material Adverse Effect.................................  4
                Notes     ..............................................  4
                Notes Custodian.........................................  4
                Officer   ..............................................  4
                Officers' Certificate...................................  4
                Opinion of Counsel......................................  5
                Original Issue Discount.................................  5
                Outstanding.............................................  5
                Paying Agent............................................  5
                Person    ..............................................  5
                Principal Amount at Maturity............................  5
                QIB       ..............................................  5

                                        

<PAGE>


                                                                        Page
                                                                        ----

                Redemption Price........................................  6
                Registrar ..............................................  6
                Responsible Officer.....................................  6
                Sale and Leaseback Transaction..........................  6
                Secured Debt............................................  6
                SEC       ..............................................  6
                Securities Act..........................................  6
                Subsidiary..............................................  6
                subsidiary..............................................  6
                Successor Company.......................................  6
                Tax Consolidated Subsidiary.............................  7
                Transfer Restricted Notes...............................  7
                Trustee   ..............................................  7
                Wholly Owned Subsidiary.................................  7

                                   ARTICLE TWO

                                    THE NOTES
                                    ---------

SECTION 2.1  Form and Dating............................................  7
SECTION 2.2  Execution and Authentication...............................  8
SECTION 2.3  Registrar and Paying Agent.................................  8
SECTION 2.4  Paying Agent To Hold Money in Trust........................  9
SECTION 2.5  Transfer and Exchange......................................  9
SECTION 2.6  Replacement Notes.......................................... 14
SECTION 2.7  Temporary Notes and Certificated Notes..................... 14
SECTION 2.8  Cancellation............................................... 15
SECTION 2.9  CUSIP Numbers.............................................. 15

                                  ARTICLE THREE

                    COVENANTS OF THE ISSUER AND THE GUARANTOR
                    -----------------------------------------

SECTION 3.1  Payment of Notes........................................... 15
SECTION 3.2  Offices for Payments, etc.................................. 16
SECTION 3.3  Appointment to Fill a Vacancy in
             Office of Trustee.......................................... 16
SECTION 3.4  Paying Agents.............................................. 16
SECTION 3.5  Written Statement to Trustee............................... 17
SECTION 3.6  Limitation on Secured Debt................................. 17
SECTION 3.7  Limitation on Sale and Leaseback........................... 19
SECTION 3.8  Voting Control of the Issuer............................... 20
SECTION 3.9  Insurance   ............................................... 20





                                        

<PAGE>


                                                                        Page
                                                                        ----

                                  ARTICLE FOUR

                          NOTEHOLDERS LISTS AND REPORTS
                          BY THE ISSUER AND THE TRUSTEE
                          -----------------------------

SECTION 4.1  Issuer to Furnish Trustee Names and 
             Addresses of Noteholders................................... 21
SECTION 4.2  Preservation and Disclosure of Noteholders Lists........... 21
SECTION 4.3  Reports by the Issuer and the Guarantor.................... 22
SECTION 4.4  Reports by the Trustee..................................... 22

                                  ARTICLE FIVE

                     REMEDIES OF THE TRUSTEE AND NOTEHOLDERS
                               ON EVENT OF DEFAULT
                     ---------------------------------------
SECTION 5.1  Event of Default Defined; Acceleration of Maturity;
             Waiver of Default......................................... 24
SECTION 5.2  Collection of Indebtedness by
             Trustee; Trustee May Prove Debt........................... 26
SECTION 5.3  Application of Proceeds................................... 28
SECTION 5.4  Suits for Enforcement..................................... 28
SECTION 5.5  Restoration of Rights on Abandonment
                      of Proceedings................................... 28
SECTION 5.6  Limitations on Suits by Noteholders....................... 28
SECTION 5.7  Unconditional Right of Noteholders
             to Institute Certain Suits................................ 29
SECTION 5.8  Powers and Remedies Cumulative; Delay
             or Omission Not Waiver of Default......................... 29
SECTION 5.9  Control by Holders of the Notes........................... 29
SECTION 5.10 Waiver of Past Defaults................................... 30
SECTION 5.11 Trustee to Give Notice of Default,
             But May Withhold in Certain Circumstances................. 30
SECTION 5.12 Right of Court to Require Filing
             of Undertaking to Pay Costs............................... 30

                                   ARTICLE SIX

                             CONCERNING THE TRUSTEE
                             ----------------------

SECTION 6.1  Duties and Responsibilities of the
             Trustee; During Default; Prior to Default................. 31
SECTION 6.2  Certain Rights of the Trustee............................. 32

                                        

<PAGE>


                                                                       Page
                                                                       ----

SECTION 6.3  Trustee Not Responsible for Recitals,
             Disposition of the Notes or
             Application of Proceeds Thereof........................... 33
SECTION 6.4  Trustee and Agents May Hold Notes;
             Collections, etc.......................................... 33
SECTION 6.5  Moneys Held by Trustee.................................... 33
SECTION 6.6  Compensation and Indemnification
             of Trustee and Its Prior Claim............................ 34
SECTION 6.7  Right of Trustee to Rely on Officers'
             Certificate, etc.......................................... 34
SECTION 6.8  Qualification of Trustee; Conflicting
             Interests................................................. 34
SECTION 6.9  Persons Eligible for Appointment
             as Trustee................................................ 39
SECTION 6.10 Resignation and Removal; Appointment
             of Successor Trustee...................................... 39
SECTION 6.11 Acceptance of Appointment by
             Successor Trustee......................................... 40
SECTION 6.12 Merger, Conversion, Consolidation or
             Succession to Business of Trustee......................... 41
SECTION 6.13 Preferential Collection of Claims
             Against the Issuer........................................ 42
SECTION 6.14 Appointment of Authenticating
             Agent..................................................... 45

                                  ARTICLE SEVEN

                           CONCERNING THE NOTEHOLDERS
                           --------------------------

SECTION 7.1  Evidence of Action Taken by
             Noteholders............................................... 46
SECTION 7.2  Proof of Execution of Instruments
             and of Holding of Notes................................... 46
SECTION 7.3  Holders to be Treated as Owners........................... 46
SECTION 7.4  Notes Owned by Issuer Deemed Not
             Outstanding............................................... 46
SECTION 7.5  Right of Revocation of Action Taken....................... 47

                                  ARTICLE EIGHT

                             SUPPLEMENTAL INDENTURES
                             -----------------------

SECTION 8.1  Supplemental Indentures Without
             Consent of Noteholders.................................... 47
SECTION 8.2  Supplemental Indentures With Consent
             of the Noteholders........................................ 49
SECTION 8.3  Effect of Supplemental Indenture.......................... 50
SECTION 8.4  Documents to Be Given to Trustee.......................... 50

                                        

<PAGE>


                                                                       Page
                                                                       ----

SECTION 8.5  Notation on Notes in Respect of
             Supplemental Indentures................................... 50

                                  ARTICLE NINE

                    CONSOLIDATION, MERGER, SALE OR CONVEYANCE
                    -----------------------------------------

SECTION 9.1  Covenant of the Guarantor and the
             Issuer Not to Merge, Consolidate,
             Sell or Convey Property Except
             Under Certain Conditions.................................. 50
SECTION 9.2  Notes to be Secured in Certain Events..................... 51
SECTION 9.3  Successor Company Substituted............................. 51
SECTION 9.4  Officers' Certificate and Opinion of
             Counsel Delivered to Trustee.............................. 52

                                   ARTICLE TEN

                          SATISFACTION AND DISCHARGE OF
                           INDENTURE; UNCLAIMED MONEYS
                         ------------------------------
SECTION 10.1  Satisfaction and Discharge of Indenture.................. 52
SECTION 10.2  Application by Trustee of Funds Deposited for 
              Payment of Notes......................................... 55
SECTION 10.3  Repayment of Moneys Held by Paying Agent................. 55
SECTION 10.4  Return of Moneys Held by Trustee and Paying Agent 
              Unclaimed for Two Years.................................. 55
SECTION 10.5  Indemnity for Government Obligations..................... 56
SECTION 10.6  Reinstatement............................................ 56

                                 ARTICLE ELEVEN

                            MISCELLANEOUS PROVISIONS
                            ------------------------

SECTION 11.1  Incorporators, Stockholders, Officers and Directors of 
              Issuer and Guarantor Exempt from Individual Liability.... 56
SECTION 11.2  Provisions of Indenture for the Sole Benefit of Parties 
              and Holders of Notes..................................... 56
SECTION 11.3  Successors and Assigns of Issuer or Guarantor Bound by
              Indenture................................................ 57
SECTION 11.4  Notices and Demands on Issuer, the Guarantor, Trustee 
              and Holders of Notes..................................... 57
SECTION 11.5  Officers' Certificates and Opinions of Counsel; 
              Statements to be Contained Therein....................... 57
SECTION 11.6  Payments Due on Saturdays, Sundays and Holidays.......... 58
SECTION 11.7  Illinois Law to Govern................................... 59
SECTION 11.8  Counterparts............................................. 59
SECTION 11.9  Effect of Headings....................................... 59

                                        

<PAGE>


                                                                       Page
                                                                       ----

                                 ARTICLE TWELVE

                               REDEMPTION OF NOTES
                               -------------------

SECTION 12.1  Right to Redeem; Notices to Trustee...................... 59
SECTION 12.2  Notice of Redemption; Partial Redemptions................ 59
SECTION 12.3  Payment of Notes Called for Redemption................... 60
SECTION 12.4  Exclusion of Certain Notes from Eligibility for 
              Selection for Redemption................................. 61

                                ARTICLE THIRTEEN

                                    GUARANTEE
                                    ---------

SECTION 13.1  Telephone and Data Systems, Inc. Guarantee............... 61
SECTION 13.2  Continuing Guarantee; No Right of Set-Off; 
              Independent Obligation................................... 61
SECTION 13.3  Guarantee Unconditional.................................. 62
SECTION 13.4  Right to Demand Full Performance......................... 64
SECTION 13.5  Waivers    .............................................. 64
SECTION 13.6  The Guarantor Remains Obligated in the Event the Issuer  
              is No Longer Obligated to Discharge Indenture Obligations 65
SECTION 13.7  Subrogation.............................................. 65
SECTION 13.8  Guarantee Is In Addition to Other Security............... 65
SECTION 13.9  Release of Security Interests............................ 65
SECTION 13.10 No Bar to Further Actions................................ 66
SECTION 13.11 Failure to Exercise Rights Shall Not Operate As a Waiver; 
              No Suspension of Remedies................................ 66
SECTION 13.12 Release of Guarantee..................................... 66
SECTION 13.13 Execution of Guarantee................................... 66
SECTION 13.14 Guarantee Unsecured Unsubordinated Indebtedness of 
              Guarantor................................................ 67
- ---------------

EXHIBIT A                         Form of Note


                                       

<PAGE>






          THIS INDENTURE dated as of February 5, 1998 (the "Indenture")
among  Aerial  Communications,  Inc.,  a Delaware  corporation,  as issuer  (the
"Issuer"),  Telephone and Data Systems, Inc., an Iowa corporation,  as Guarantor
(the  "Guarantor"),  and The First  National  Bank of Chicago,  as trustee  (the
"Trustee").

                              W I T N E S S E T H :

          WHEREAS, the Issuer has duly authorized the issue of the Series B
Zero Coupon Notes Due February 1, 2008 (the "Notes) up to $219,975,000 principal
amount at maturity.

          WHEREAS, the Issuer has duly authorized the execution and delivery of 
this Indenture to provide, among other things, for the authentication, delivery 
and administration of the Notes;

          WHEREAS, the Guarantor has duly authorized the full and
unconditional guarantee by the Guarantor,  when and as the same shall become due
and payable,  of the Issuer's due and punctual payment of its obligations  under
this  Indenture  and  the  Notes,   whether  at  maturity,   by  declaration  of
acceleration, upon redemption or otherwise; and

          WHEREAS, all things necessary to make this Indenture a valid
indenture and agreement according to its terms have been done;

          NOW, THEREFORE:

          In consideration of the premises and the purchases of the Notes by
the holders thereof, the Issuer, the Guarantor and the Trustee mutually covenant
and agree for the equal and proportionate benefit of the respective Holders from
time to time of the Notes as follows:


                                   ARTICLE ONE

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

          SECTION 1.1  Certain Terms Defined.  The following terms (except
as  otherwise  expressly  provided  or  unless  the  context  otherwise  clearly
requires) for all purposes of this  Indenture and of any indenture  supplemental
hereto  shall  have the  respective  meanings  specified  in this  Section.  All
accounting terms used herein and not otherwise  expressly defined shall have the
meanings assigned to such terms in accordance with generally accepted accounting
principles,  and the term "generally accepted accounting  principles" means such
accounting  principles as are generally accepted at the time of any computation.
The words  "herein",  "hereof" and "hereunder" and other words of similar import
refer to this Indenture as a whole and not to any particular Article, Section or
other subdivision.  The terms defined in this Article include the plural as well
as the singular.

                                        


                                                        

<PAGE>



         "Agent Member" shall have the meaning set forth in Section 2.1(b).

         "Authenticating Agent" shall have the meaning set forth in Section
6.14.

         "Board of Directors" means the Board of Directors of the Issuer or
the Guarantor, as the case may be, or any committee of such Board duly 
authorized to act on its behalf.

         "Board Resolution" means a copy of one or more resolutions,
certified  by the  secretary  or an  assistant  secretary  of the  Issuer or the
Guarantor,  as the case may be, to have been duly adopted or consented to by the
Board of Directors of the Issuer or the Guarantor, as the case may be, and to be
in full force and effect, and delivered to the Trustee.

         "Business Day" means, with respect to the Notes, a day on which,
in any city where amounts are payable on the Notes as therein specified, banking
institutions are not authorized or required by law or regulation to close.

         "Capital Stock" means and includes any and all shares, interests,
participations or other equivalents (however designated) of ownership in a 
corporation or other Person.

         "Capitalization" means with respect to any Person the total of (a)
Funded  Debt,  (b) the par value or, in the case of  Capital  Stock  with no par
value, a value stated on the books, of all outstanding  shares of Capital Stock,
(c) the paid-in surplus and retained earnings (or minus the net surplus deficit,
as the case may be), (d) deferred taxes and deferred investment tax credits, (e)
Capitalized  Rent and (f) minority  interests in  subsidiaries,  of such Person.
Notwithstanding  the  foregoing,  for  purposes of the  definition  of "Event of
Default,"  "Capitalization"  shall have the  meaning  set forth in  Section  5.1
hereof.

          "Capitalized Rent" means the present value (discounted
semi-annually at the yield to maturity on the Notes, calculated from the date of
issuance thereof) of the total net amount of rent payable for the remaining term
of any lease of property by the Guarantor  (including  any period for which such
lease has been  extended);  provided,  however,  that no such rental  obligation
shall be deemed to be Capitalized Rent unless the lease resulted from a Sale and
Leaseback Transaction.  The total net amount of rent payable under any lease for
any period  shall be the total  amount of the rent  payable  by the lessee  with
respect to such  period but shall not  include  amounts  required  to be paid on
account of maintenance and repairs, insurance, taxes, assessments,  water rates,
sewer rates and similar charges.

          "Consolidated Capitalization" means the Capitalization of the
Guarantor and its Subsidiaries  determined on a consolidated basis as of the end
of the Guarantor's  then most recently  reported fiscal year or quarter,  as the
case may be, including minority interests in its Subsidiaries.

         "Corporate Trust Office" means the principal office of the Trustee at
which at any particular time its corporate trust business shall be administered,
which office at the

                                        2


                                                         
<PAGE>



date of original  execution of this  Indenture is located at One First  National
Plaza, Suite 0126, Chicago, IL 60670, Attention: Corporate Trust Administration,
except  that,  with  respect  to  presentation  of  the  Notes  for  payment  or
registration  of transfers or exchanges and the location of the  register,  such
term means the office or agency of the Trustee at which at any  particular  time
its corporate agency business shall be conducted,  which at the date of original
execution of this Indenture is located at 14 Wall Street - 8th Floor - Window 2,
New York, New York 10005.

          "Debt" means with respect to a Person all obligations of such
Person  for  borrowed  money and all such  obligations  of any other  Person for
borrowed money guaranteed by such Person.

          "Definitive Notes" shall have the meaning set forth in Section 2.1(c).

          "Depositary" means The Depository Trust Company, its nominees
and their respective successors.

           "Event of Default" means any event or condition specified as such in
Section 5.1.

           "Exchange Act" means the Securities Exchange Act of 1934 and the
rules and regulations promulgated thereunder.

           "Funded Debt" means any Debt maturing by its terms more than
one year from its date of  issuance  (notwithstanding  that any  portion of such
Debt is included in current liabilities).

          "Guarantee" means the guarantee by the Guarantor of the Issuer's
obligations under this Indenture and the Notes, as provided in Article Thirteen.

          "Global Note" shall have the meaning set forth in Section 2.1(a).

          "Guarantor" means Telephone and Data Systems, Inc., an Iowa
corporation, and, subject to Article Nine, its successors and assigns.

          "Government Obligations" means securities that are (a) direct
obligations  of the  United  States  of  America,  (b)  obligations  of a Person
controlled or supervised  by and acting as an agency or  instrumentality  of the
United States of America,  which, in either case, are not callable or redeemable
at the option of the issuer thereof, and shall also include a depository receipt
issued by a bank (as defined in Section  3(a)(2) of the  Securities Act of 1933,
as amended) as custodian  with respect to any such  Government  Obligation  or a
specific  payment of principal of or interest on any such Government  Obligation
held by such custodian for the account of the holder of such depository receipt,
provided  that (except as provided by law) such  custodian is not  authorized to
make any  deduction  from the amount  payable  to the holder of such  depository
receipt from any amount  received by the custodian in respect of such Government
Obligation  or  the  specific  payment  of  principal  of or  interest  on  such
Government Obligation evidenced by such depository receipt.



                                                      


                                        3

<PAGE>



          "Holder", "Holder of Notes", "Noteholder" or other similar terms means
the Person in whose name such Note is registered on the books of the Registrar.

          "IAI" shall have the meaning set forth in Section 2.1(c).

          "Indenture" means this instrument as originally executed and
delivered or, if amended or  supplemented as herein  provided,  as so amended or
supplemented  or both,  and  shall  include  the  forms  and  terms of the Notes
established, as provided hereunder.

          "Indenture Obligations" means the obligations of the Issuer under
this Indenture or under the Notes to pay the Principal Amount at Maturity, Issue
Price,  accrued  Original Issue Discount and Redemption  Price on the Notes when
due and  payable,  and all  other  amounts  due or to  become  due  under  or in
connection  with this  Indenture,  the Notes  and the  performance  of all other
obligations  to the Trustee and the Holders under this  Indenture and the Notes,
according to the terms thereof.

          "Issuer" means Aerial Communications, Inc., a Delaware
corporation and, subject to Article Nine, its successors and assigns.

          "Issuer Order" means a written statement, request or order of the
Issuer or the Guarantor,  as the case may be, signed in its name by the Chairman
of the Board of Directors,  the President or any Vice President  (whether or not
designated  by a number or numbers or a word or words added  before or after the
title "Vice  President")  and by the  Treasurer,  any Assistant  Treasurer,  the
Secretary,  any Assistant Secretary,  the Controller or any Assistant Controller
of the Issuer or the Guarantor, as the case may be.

          "Issue Price" of any Note means, in connection with the original
issuance of such Note, the initial issue price as set forth on the face of the 
Note.

          "Lien" means any mortgage, pledge, security interest, lien, charge
or other encumbrance.

          "Material Adverse Effect" means a material adverse effect on (a) the
business, operations,  affairs, financial condition, assets or properties of the
Guarantor and its Subsidiaries  taken as a whole, (b) the rights and remedies of
the Holders  under this  Indenture  or (c) the ability of the  Guarantor  or the
Issuer to perform its obligations under this Indenture.

          "Notes" shall have the meaning set forth in the preamble.

          "Notes Custodian" means the custodian with respect to a Global
Note (as appointed by the Depository), or any successor person thereto and shall
initially be the Trustee.

          "Officer" means the Chairman of the Board, the President, any Vice
President, the Treasurer or the Secretary of the Issuer or the Guarantor, as the
case may be.

          "Officers' Certificate" means a certificate signed by the Chairman of
the Board of Directors, the President or any Vice President (whether or not 
designated by a

                                                    

                                        4

<PAGE>



number or  numbers  or a word or words  added  before  or after the title  "Vice
President") and by the Treasurer,  any Assistant Treasurer,  the Secretary,  any
Assistant Secretary, the Controller or any Assistant Controller of the Issuer or
the  Guarantor,  as the case may be, and  delivered  to the  Trustee.  Each such
certificate shall include the statements provided for in Section 11.5.

          "Opinion of Counsel" means an opinion in writing signed by legal
counsel,  who may be an employee of, or counsel to, the Issuer or the Guarantor,
as the case may be. Each such opinion shall include the statements  provided for
in Section 11.5, if and to the extent required thereby.

           "Original Issue Discount" of any Note means the difference between
the Issue Price and the Principal Amount at Maturity of the Note as set forth on
the face of the Note.

          "Outstanding", when used with reference to Notes, shall, subject to
the  provisions  of Section 7.4,  mean,  as of any  particular  time,  all Notes
authenticated and delivered by the Trustee under this Indenture, except:

          (a)       Notes theretofore cancelled by the Trustee or delivered to
         the Trustee for cancellation;

          (b)       Subject to Article 10, Notes, or portions thereof, for the
         payment or  redemption of which moneys or  Government  Obligations  (as
         provided for in Section 10.1) in the  necessary  amount shall have been
         deposited  in trust with the  Trustee or with any Paying  Agent  (other
         than the Issuer) or shall have been set aside,  segregated  and held in
         trust by the Issuer for the Holders of such Notes (if the Issuer  shall
         act as its own Paying Agent),  provided that if such Notes, or portions
         thereof,  are to be redeemed prior to the maturity  thereof,  notice of
         such redemption shall have been given as herein provided,  or provision
         satisfactory  to the  Trustee  shall  have  been made for  giving  such
         notice; and

          (c)       Notes which shall have been paid or in substitution for
         which other Notes shall have been  authenticated and delivered pursuant
         to the terms of Section 2.6 (except with respect to any such Note as to
         which proof  satisfactory to the Trustee is presented that such Note is
         held by a Person in whose hands such Note is a legal, valid and binding
         obligation of the Issuer).

          "Paying Agent" shall have the meaning set forth in Section 2.3.

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

          "Principal Amount at Maturity" of a Note means the Principal
Amount at Maturity as set forth on the face of the Note.

          "QIB" shall have the meaning set forth in Section 2.1.


                                                    
                                        5

<PAGE>


          "Redemption Price" shall have the meaning set forth in paragraph 5
of the Notes.

          "Registrar" shall have the meaning set forth in Section 2.3.

          "Responsible Officer", when used with respect to the Trustee,
means the chairman of the board of directors,  any vice chairman of the board of
directors,  the chairman of the trust  committee,  the chairman of the executive
committee, any vice chairman of the executive committee, the president, any vice
president  (whether or not  designated by numbers or words added before or after
the title "vice  president"),  the cashier,  the secretary,  the treasurer,  any
trust officer,  any assistant trust officer,  any assistant vice president,  any
assistant cashier, any assistant secretary, any assistant treasurer or any other
officer or assistant  officer of the Trustee  customarily  performing  functions
similar  to  those  performed  by the  persons  who at the  time  shall  be such
officers,  respectively,  or to whom any  corporate  trust  matter  is  referred
because of his knowledge of and familiarity with the particular subject.

          "Sale and Leaseback Transaction" means any arrangement with
any Person other than a Tax  Consolidated  Subsidiary  providing for the leasing
(as lessee) by the Guarantor of any property  (except for temporary leases for a
term, including any renewal thereof, of not more than three years (provided that
any such temporary  lease may be for a term of up to five years if (a) the Board
of  Directors  of the  Guarantor  reasonably  finds  such term to be in the best
interest of the  Guarantor  and (b) the primary  purpose of the  transaction  of
which  such  lease is a part is not to  provide  funds to or  financing  for the
Guarantor)),  which  property  has been or is to be sold or  transferred  by the
Guarantor  (i) to any  subsidiary  of the  Guarantor in  contemplation  of or in
connection with such arrangement or (ii) to such other Person.

          "Secured Debt" means Debt of the Guarantor secured by any Lien
on property (including Capital Stock or indebtedness of Subsidiaries of the 
Guarantor) owned by the Guarantor.

          "SEC" shall have the meaning set forth in Section 2.1(a).

          "Securities Act" shall have the meaning set forth in Section 2.1(a).

          "Subsidiary" means a Person which is consolidated with the Issuer
or the Guarantor, as applicable, in accordance with generally accepted 
accounting principles.

          "subsidiary" means, with respect to any Person, any corporation,
association,  partnership or other business entity of which more than 50% of the
total  voting  power of shares of Capital  Stock or other  interests  (including
partnership  interests)  entitled  (without  regard  to  the  occurrence  of any
contingency) to vote in the election of directors,  managers or trustees thereof
is at the time owned or controlled,  directly or indirectly, by (i) such Person,
(ii) such  Person and one or more  subsidiaries  of such  Person or (iii) one or
more subsidiaries of such Person.

          "Successor Company" shall have the meaning set forth in Section 9.1.


                                                
                                        6

<PAGE>



          "Tax Consolidated Subsidiary" means a subsidiary of the Guarantor
with which, at the time a Sale and Leaseback  Transaction is entered into by the
Guarantor, the Guarantor would be entitled to file a consolidated federal income
tax return.

          "Transfer Restricted Notes" means Definitive Notes and Notes that
bear or are required to bear the legend set forth in Section 2.5(d).

          "Trustee" means the Person identified as "Trustee" in the first
paragraph  hereof and,  subject to the  provisions  of Article  Six,  shall also
include any successor trustee.

          "Wholly Owned Subsidiary" means a Subsidiary all the capital stock
of which (other than directors' qualifying shares) is owned by the Issuer or the
Guarantor, as applicable, or another Wholly Owned Subsidiary.


                                   ARTICLE TWO

                                    THE NOTES
                                    ---------

          SECTION 2.1  Form and Dating.  The Notes and the Trustee's
certificate of  authentication  shall be substantially in the form of Exhibit A,
which is hereby incorporated in and expressly made a part of this Indenture. The
Notes may have notations, legends or endorsements required by law and agreements
to which  the  Issuer  is  subject,  if any,  or usage  (provided  that any such
notation,  legend or  endorsement  is in a form  acceptable to the Issuer).  The
Notes  shall be dated the date of their  authentication.  The terms of the Notes
set forth in Exhibit A are part of the terms of this Indenture.

          (a)       Global Notes.  The Notes offered and sold to "qualified
institutional buyers" (as defined in Rule 144A under the Securities Act) (each a
"QIB") or in reliance on Regulation S under the Securities Act  ("Regulation S")
shall  be  issued  initially  in  the  form  of one  permanent  global  Note  in
definitive,  fully registered form without interest coupons with the global Note
legend and  restricted  Note legend set forth in Exhibit A hereto  (the  "Global
Note"),  which  shall be  deposited  on  behalf of the  purchasers  of the Notes
represented  thereby with the Trustee,  at its New York office, as custodian for
the Depository (or with such other custodian as the Depository may direct),  and
registered in the name of the  Depository or a nominee of the  Depository,  duly
executed by the Issuer and the  Guarantor  and  authenticated  by the Trustee as
hereinafter  provided.  The aggregate Principal Amount at Maturity of the Global
Note may from time to time be increased or decreased by adjustments  made on the
records  of the  Trustee  and  the  Depository  or its  nominee  as  hereinafter
provided.

          (b)       Book-Entry Provisions.  This Section 2.1(b) shall apply only
to the Global Note deposited with or on behalf of the Depository.

          The Issuer and the Guarantor shall execute and the Trustee shall, in
accordance  with this Section  2.1(b),  authenticate  and deliver  initially one
Global Note that (a) shall be  registered  in the name of the  Depository or the
nominee  of the  Depository  and (b) shall be  delivered  by the  Trustee to the
Depository or pursuant to the  Depository's  instructions or held by the Trustee
as custodian for the Depository.

                                                     
                                        7

<PAGE>



          Members of, or participants in, the Depository ("Agent Members")
shall have no rights under this  Indenture  with respect to the Global Note held
on their  behalf by the  Depository  or by the Trustee as the  custodian  of the
Depository or under such Global Note,  and the  Depository may be treated by the
Issuer,  the Trustee and any agent of the Issuer or the Trustee as the  absolute
owner of such  Global Note for all  purposes  whatsoever.  Notwithstanding the
foregoing,  nothing herein shall prevent the Issuer, the Trustee or any agent of
the Issuer or the Trustee from giving effect to any written certification, proxy
or other  authorization  furnished by the  Depository or impair,  as between the
Depository and its Agent Members,  the operation of customary  practices of such
Depository  governing  the  exercise  of the rights of a Holder of a  beneficial
interest in the Global Note.

          (c)       Certificated Notes.  Except as provided in this Section or
Section 2.5 or 2.7,  owners of beneficial  interests in the Global Note will not
be entitled to receive physical  delivery of certificated  Notes.  Purchasers of
the Notes who are  institutional  "accredited  investors"  as  described in Rule
501(a)(1),  (2), (3) or (7) under the Securities Act (each an "IAI") and who are
not QIBs and did not  purchase  Notes  sold in  reliance  on  Regulation  S will
receive  certificated  Notes  bearing  the  restricted  Note legend set forth in
Exhibit A hereto (such  securities  as held by an IAI are herein  referred to as
"Definitive Notes"); provided,  however, that upon transfer of such certificated
Notes to a QIB or in  reliance on  Regulation  S such  certificated  Notes will,
unless the Global  Note has  previously  been  exchanged,  be  exchanged  for an
interest  in  the  Global  Note  pursuant  to the  provisions  of  Section  2.5.
Definitive  Notes will bear the  restricted  Note  legend set forth on Exhibit A
unless removed in accordance with Section 2.5(d).

           SECTION 2.2  Execution and Authentication.  Two Officers shall
sign the Notes for the Issuer by manual or  facsimile  signature.  The  Issuer's
seal shall be impressed,  affixed,  imprinted or reproduced on the Notes and may
be in facsimile  form. The Guarantee shall be executed by one of the Officers of
the  Guarantor  under its  corporate  seal  reproduced  thereon  attested by its
Secretary or one of its Assistant Secretaries.

          If an Officer whose signature is on a Note no longer holds that office
at the time the Trustee authenticates the Note, the Note shall be valid
nevertheless.

          A Note shall not be valid until an  authorized signatory of the 
Trustee or a duly  appointed  Authenticating  Agent  manually  signs the  
certificate of authentication on the Note. The signature shall be conclusive  
evidence that the Note has been authenticated under this Indenture.

          The  Trustee  or  duly  appointed   Authenticating  Agent  shall
authenticate  and deliver  Notes for issue in an aggregate  Principal  Amount at
Maturity  of  $219,975,000  upon a  written  order of the  Issuer  signed by two
Officers  or by an Officer and either an  Assistant  Treasurer  or an  Assistant
Secretary of the Issuer.  Such order shall specify the amount of the Notes to be
authenticated  and the date on which the issue of Notes is to be  authenticated.
The aggregate  Principal Amount at Maturity of Notes outstanding at any time may
not exceed $219,975,000 except as provided in Section 2.6.

          SECTION 2.3  Registrar and Paying Agent.  The Issuer shall
maintain an office or agency where Notes may be presented  for  registration  of
transfer or for exchange (the  "Registrar")  and an office or agency where Notes
may be presented for payment

                                        8

<PAGE>



(the "Paying  Agent").  The Registrar  shall keep a register of the Notes and of
their transfer and exchange.  The Issuer may have one or more  co-registrars and
one or more  additional  paying  agents.  The term "Paying  Agent"  includes any
additional paying agent.

               The Issuer shall enter into an appropriate agency agreement with
any Registrar,  Paying Agent or co-registrar not a party to this Indenture.  The
agreement  shall  implement the provisions of this Indenture that relate to such
agent.  The Issuer  shall notify the Trustee of the name and address of any such
agent. If the Issuer fails to maintain a Registrar or Paying Agent,  the Trustee
shall act as such and shall be entitled  to  appropriate  compensation  therefor
pursuant  to Section  6.6.  The Issuer or any of its  domestically  incorporated
Wholly Owned  Subsidiaries may act as Paying Agent,  Registrar,  co-registrar or
transfer agent.

               SECTION 2.4  Paying Agent To Hold Money in Trust.  Prior to each
due date of payments in respect of any Note,  the Issuer shall  deposit with the
Paying Agent a sum  sufficient  to make such  payments when so becoming due. The
Issuer  shall  require  each Paying  Agent  (other than the Trustee) to agree in
writing that the Paying Agent shall hold in trust for the benefit of Noteholders
or the Trustee all money held by the Paying  Agent for the making of payments in
respect of the Notes and shall  notify the  Trustee of any default by the Issuer
in making any such payments. If the Issuer or a Subsidiary acts as Paying Agent,
it  shall  segregate  the  money  held by it as  Paying  Agent  and hold it as a
separate  trust fund.  The Issuer at any time may require a Paying  Agent to pay
all money held by it to the Trustee and to account  for any funds  disbursed  by
the Paying Agent. Upon complying with this Section,  the Paying Agent shall have
no further liability for the money delivered to the Trustee.

               SECTION 2.5  Transfer and Exchange.  (a) Transfer and Exchange
of Definitive Notes.  When Definitive Notes are presented to the Registrar or a 
co-registrar with a  request:

          (x)       to register the transfer of such Definitive Notes; or

          (y)       to exchange such Definitive Notes for an equal Principal
         Amount at Maturity of Definitive Notes of other authorized 
         denominations,

the Registrar or  co-registrar  shall register the transfer or make the exchange
as requested if the requirements of this Indenture are met;  provided,  however,
that the Definitive Notes surrendered for transfer or exchange:

               i)        shall be duly endorsed or accompanied by a written
         instrument of transfer in form  reasonably  satisfactory  to the Issuer
         and the Registrar or co-registrar,  duly executed by the Holder thereof
         or such Holder's attorney duly authorized in writing; and

               ii)       are being transferred or exchanged pursuant to Section
         2.5(b) or pursuant to clause (A), (B) or (C) below, and are accompanied
         by the following additional information and documents, as applicable:

                    (A) if  such  Definitive  Notes  are being  delivered to the
          Registrar by a Holder for registration in the name of such 
          Holder,

                                                     
                                        9

<PAGE>



           without transfer, a certification from such Holder to that 
           effect (in the form set forth on the reverse of the Note); or

                    (B) if  such  Definitive  Notes  are  being    transferred  
               to the    Issuer   a certification  to that effect (in the form 
           set forth on the reverse of the Note); or

                    (C) if  such  Definitive  Notes  are being  transferred 
               pursuant  to an  exemption from  registration in accordance with 
               Rule 144 or Regulation S under the Securities  Act: (i)
               a certificate  to that effect (in the form set forth on the 
               reverse of the Note), and (ii) if the Issuer or Registrar so
               requests,  evidence reasonably  satisfactory  to  them  as to the
               compliance with the  restrictions set forth in the legend set 
               forth in Section 2.5(d)(i).

               (b)       Restrictions on Transfer of a Definitive Note for a
Beneficial Interest  in the Global  Note.  A  Definitive  Note may not be
exchanged  for a    beneficial  interest  in  the  Global  Note  except  upon  
satisfaction  of  the    requirements set forth below.  Upon receipt by the 
Trustee of a Definitive Note, duly endorsed or  accompanied by  appropriate  
instruments of transfer,  in form satisfactory to the Trustee, together with:

               i)  certification, in the form set forth on the reverse of the 
     Note, that such Definitive Note is being transferred to a QIB in accordance
     with Rule 144A under the Securities Act or to a non-U.S. person in 
     accordance with Rule 904 under the Securities Act; and

               ii) written instructions directing the Trustee to make, or to 
     direct the Notes  Custodian to make,  an  adjustment on its books and 
     records with respect to such Global  Note to reflect an  increase  in the 
     aggregate Principal  Amount at  Maturity of the Notes  represented  by the 
     Global Note, 

then the Trustee  shall  cancel such  Definitive  Note and 
cause,  or direct the Notes  Custodian to cause,  in  accordance  with the 
standing  instructions  and procedures  existing  between  the  Depository  and 
the  Notes  Custodian,  the aggregate  Principal Amount at Maturity of Notes  
represented by the Global Note to be increased accordingly.  If no Global Note 
is then outstanding,  the Issuer shall issue and the Trustee shall authenticate,
upon written order of the Issuer in the form of an Officers'  Certificate,  
a new Global Note in the  appropriate Principal Amount at Maturity.

               (c)   Transfer and Exchange of Global Note.
                                        
                i)  The transfer and exchange of the Global Note or beneficial
         interests  therein  shall  be  effected  through  the  Depository,   in
         accordance with this Indenture  (including  applicable  restrictions on
         transfer set forth herein, if any) and the procedures of the Depository
         therefor, if applicable.

               ii)  Notwithstanding any other provisions of this Indenture 
         (other than the provisions set forth in Section 2.7), the Global Note 
         may not be transferred as a

                                       10

<PAGE>



         whole except by the  Depository to a nominee of the  Depository or by a
         nominee of the Depository to the  Depository or another  nominee of the
         Depository  or by the  Depository  or any such  nominee to a  successor
         Depository or a nominee of such successor Depository.

               iii)  In the event that the Global Note is exchanged for Notes in
         definitive  form  pursuant to Section 2.7,  such Notes may be exchanged
         only in accordance with such procedures as are substantially consistent
         with the provisions of this Section 2.5  (including  the  certification
         requirements  set forth on the reverse of the Notes  intended to ensure
         that such transfers  comply with Rule 144A or Regulation S, as the case
         may be) and such other  procedures  as may from time to time be adopted
         by the Issuer.

                    (d)       Legend.
                               
               i)  Except as permitted by the following paragraph (ii), each 
         Note certificate  evidencing the Global Note and the  Definitive  Notes
         (and all Notes issued in exchange  therefor or  substitution  thereof) 
         shall bear a legend in substantially the following form:

                 "THIS    NOTE  (OR  ITS  PREDECESSOR)  WAS  ORIGINALLY  ISSUED
         IN  A  TRANSACTION  EXEMPT  FROM  REGISTRATION   UNDER  THE   UNITED
         STATES  SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES  ACT"), AND
         UNDER  APPLICABLE  STATE  SECURITIES  LAWS,  AND  THIS  NOTE MAY NOT BE
         OFFERED,   SOLD  OR  OTHERWISE  TRANSFERRED  IN  THE  ABSENCE  OF  SUCH
         REGISTRATION OR AN APPLICABLE  EXEMPTION  THEREFROM.  EACH PURCHASER OF
         THIS  NOTE IS  HEREBY  NOTIFIED  THAT THE  SELLER  OF THIS  NOTE MAY BE
         RELYING  ON THE  EXEMPTION  FROM THE  PROVISIONS  OF  SECTION  5 OF THE
         SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER.

                THE   HOLDER  OF  THIS  NOTE  AGREES  FOR  THE  BENEFIT   OF
         THE  ISSUER  THAT (A) THIS  NOTE MAY BE  OFFERED,  RESOLD,  PLEDGED  OR
         OTHERWISE TRANSFERRED,  ONLY (i) TO A PERSON WHOM THE SELLER REASONABLY
         BELIEVES  IS A QUALIFIED  INSTITUTIONAL  BUYER (AS DEFINED IN RULE 144A
         UNDER THE SECURITIES ACT) IN A TRANSACTION  MEETING THE REQUIREMENTS OF
         RULE 144A, (ii) IN AN OFFSHORE  TRANSACTION IN ACCORDANCE WITH RULE 904
         UNDER  THE  SECURITIES   ACT,  (iii)  PURSUANT  TO  AN  EXEMPTION  FROM
         REGISTRATION  UNDER THE  SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER
         (IF AVAILABLE) OR (iv) PURSUANT TO AN EFFECTIVE  REGISTRATION STATEMENT
         UNDER  THE  SECURITIES  ACT,  IN  EACH OF  CASES  (i)  THROUGH  (iv) IN
         ACCORDANCE  WITH ANY  APPLICABLE  SECURITIES  LAWS OF ANY  STATE OF THE
         UNITED STATES,  AND (B) THE HOLDER WILL, AND EACH SUBSEQUENT  HOLDER IS
         REQUIRED  TO,  NOTIFY ANY  PURCHASER  OF THIS  SECURITY  FROM IT OF THE
         RESALE RESTRICTIONS REFERRED TO IN (A) ABOVE."

               When set forth on a Definitive Note, the legend will include
the following additional words:

                                                   
                                       11

<PAGE>



                "IN CONNECTION WITH ANY TRANSFER, THE HOLDER WILL
         DELIVER TO THE REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND
         OTHER INFORMATION AS SUCH TRANSFER AGENT MAY REASONABLY REQUIRE
         TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOREGOING
         RESTRICTIONS."

               ii) Upon any sale or transfer of a Transfer Restricted Note
         (including any Transfer  Restricted Note  represented by a Global Note)
         pursuant to Rule 144 under the Securities Act:

                    (A) in  the  case  of  any  Transfer  Restricted  Note 
               that is a Definitive Note, the Registrar shall permit the 
               Holder  thereof to exchange such Transfer Restricted Note for a 
               certificated  Note  that  does  not  bear  the legend set forth
               above and rescind any restriction on the transfer of such 
               Transfer Restricted Note;
               

                    (B) in  the  case  of  any  Transfer Restricted Note that
               is represented by the Global Note, the Registrar shall permit the
               Holder  thereof to request  the  issuance of a certificated Note
               that  does  not  bear  the legend set forth above and rescind any
               restrictions  on the transfer of such Transfer Restricted Note, 
               if the sale or exchange was made in reliance on Rule 144 and the 
               Holder certifies  to that  effect in  writing  to the Registrar
               (such  certification  to be in  the form set forth on the reverse
               of the Note).

          (e)  Cancellation or Adjustment of Global Note.  At such time as all
beneficial  interests  in  the  Global  Note  have  either  been  exchanged  for
certificated Notes, redeemed,  repurchased or cancelled,  such Global Note shall
be returned to the Depository for  cancellation or retained and cancelled by the
Trustee.  At any time prior to such cancellation,  if any beneficial interest in
the Global Note is exchanged for certificated  Notes,  redeemed,  repurchased or
cancelled,  the Principal Amount at Maturity of Notes represented by such Global
Note  shall be reduced  and an  adjustment  shall be made by the  Trustee or the
Notes  Custodian to reflect such reduction on the books and records of the Notes
Custodian for such Global Note with respect to such Global Note.

          (f)  Obligations with Respect to Transfers and Exchanges of Notes.

               i)   To   permit   registration   of
          transfers  and  exchanges,  the Issuer and the
          Guarantor  shall execute and the Trustee shall
          authenticate  certificated  Notes,  Definitive
          Notes and the Global  Note at the  Registrar's
          or co-registrar's request.

               ii)  The Issuer may  require  payment
          of  a  sum   sufficient   to  pay  all  taxes,
          assessments or other  governmental  charges in
          connection   with  any  transfer  or  exchange
          pursuant to this Section 2.5.

              iii)  The Issuer shall not be required to make and the

                                                     
                                       12

<PAGE>



          Registrar  or  co-registrar  need not register
          transfers  or  exchanges  of  certificated  or
          Definitive   Notes   selected  for  redemption
          (except, in the case of any Definitive Note to
          be redeemed in part,  the portion  thereof not
          to be redeemed),  or any Notes for a period of
          15 days before a  selection  of Notes to be so
          redeemed.

               iv)  Prior  to the due  presentation
          for  registration of transfer of any Note, the
          Issuer,  the Trustee,  the Paying  Agent,  the
          Registrar  or any  co-registrar  may  deem and
          treat  the  person  in  whose  name a Note  is
          registered as the absolute  owner of such Note
          for  the  purpose  of  receiving  payments  in
          respect   of  such  Note  and  for  all  other
          purposes whatsoever,  whether or not such Note
          is  overdue,  and  none  of  the  Issuer,  the
          Trustee,  the Paying  Agent,  the Registrar or
          any  co-registrar  shall be affected by notice
          to the contrary.

               v)  All   Notes   issued   upon  any
          transfer or exchange  pursuant to the terms of
          this Indenture will evidence the same debt and
          will be  entitled to the same  benefits  under
          this Indenture as the Notes  surrendered  upon
          such transfer or exchange.

          (g)       No Obligation of the Trustee.

                i)  The   Trustee   shall   have  no
          responsibility or obligation to any beneficial
          owner of the  Global  Note,  a member of, or a
          participant  in the Depository or other Person
          with respect to the accuracy of the records of
          the  Depository  or  its  nominee  or  of  any
          participant or member thereof, with respect to
          any  ownership  interest  in the Notes or with
          respect to the  delivery  to any  participant,
          member,   beneficial  owner  or  other  Person
          (other  than  the  Depository)  of any  notice
          (including  any notice of  redemption)  or the
          payment of any amount,  under or with  respect
          to such Notes. All notices and  communications
          to be given to the Holders and all payments to
          be made to  Holders  under the Notes  shall be
          given or made only to or upon the order of the
          registered   Holders   (which   shall  be  the
          Depository  or its  nominee in the case of the
          Global Note). The rights of beneficial  owners
          in the  Global  Note shall be  exercised  only
          through   the   Depository   subject   to  the
          applicable   rules  and   procedures   of  the
          Depository.  The Trustee may rely and shall be
          fully  protected in relying  upon  information
          furnished  by the  Depository  with respect to
          its members,  participants  and any beneficial
          owners.

               ii)  The   Trustee   shall  have  no
          obligation  or duty to monitor,  determine  or
          inquire as to compliance with any restrictions
          on transfer  imposed  under this  Indenture or
          under  applicable  law  with  respect  to  any
          transfer   of  any   interest   in  any   Note
          (including  any  transfers  between  or  among
          Depository participants, members or beneficial
          owners  in the  Global  Note)  other  than  to
          required delivery

                                       13

<PAGE>



          of such  certificates and other  documentation
          or evidence as are expressly  required by, and
          to do so if and when  expressly  required  by,
          the terms of this  Indenture,  and to  examine
          the same to determine  substantial  compliance
          as  to  form  with  the  express  requirements
          hereof.

          SECTION 2.6  Replacement Notes.  If a mutilated Note is
surrendered to the Registrar or if the Holder of a Note claims that the Note has
been lost,  destroyed or wrongfully taken, the Issuer shall issue, the Guarantor
shall  execute and the Trustee  shall  authenticate  a  replacement  Note if the
Holder satisfies any reasonable  requirements of the Trustee.  Such Holder shall
furnish  an  indemnity  bond  sufficient  in the  judgment  of the  Issuer,  the
Guarantor and the Trustee to protect the Issuer, the Guarantor, the Trustee, the
Paying Agent, the Registrar and any co-registrar from any loss which any of them
may suffer if a Note is  replaced.  The Issuer  and the  Trustee  may charge the
Holder for their expenses in replacing a Note.

        Every replacement Note is an additional obligation of the Issuer and the
Guarantor evidencing the same debt as the Note for which it is a replacement.

           All Notes shall be held and owned upon the express condition that,
to the extent  permitted by law, the foregoing  provisions  are  exclusive  with
respect to the replacement or payment of mutilated,  defaced, destroyed, lost or
stolen  Notes  and  shall   preclude  any  and  all  other  rights  or  remedies
notwithstanding any law or statute existing or hereafter enacted to the contrary
with respect to the  replacement  or payment of negotiable  instruments or other
securities without their surrender.

           SECTION 2.7  Temporary Notes and Certificated Notes.  (a) Until
definitive Notes are ready for delivery,  the Issuer may prepare,  the Guarantor
shall  execute and the Trustee shall  authenticate  temporary  Notes.  Temporary
Notes  shall be  substantially  in the  form of  definitive  Notes  but may have
variations that the Issuer considers  appropriate for temporary  Notes.  Without
unreasonable  delay,  the Issuer shall prepare,  the Guarantor shall execute and
the Trustee shall authenticate definitive Notes and deliver them in exchange for
temporary Notes.

          (b)  The Global Note deposited with the Depository or with the
Trustee  as  custodian  for the  Depository  pursuant  to  Section  2.1 shall be
transferred to the beneficial  owners thereof in the form of certificated  Notes
in an aggregate  Principal  Amount at Maturity equal to the Principal  Amount at
Maturity of such Global Note,  in exchange  for such Global  Note,  only if such
transfer  complies with Section 2.5 and (i) the  Depository  notifies the Issuer
that it is unwilling or unable to continue as Depository for such Global Note or
if at any time such Depository ceases to be a "clearing agency" registered under
the  Exchange  Act and a successor  depository  is not  appointed  by the Issuer
within 90 days of such  notice,  (ii) an Event of Default  has  occurred  and is
continuing or (iii) the Issuer, in its sole discretion,  notifies the Trustee in
writing  that it elects to cause the issuance of  certificated  Notes under this
Indenture.

          (c)  Any Global Note that is transferable to the beneficial owners
thereof pursuant to this Section shall be surrendered by the Depository to the
Corporate Trust

                                       14

<PAGE>



Office of the Trustee located in the Borough of Manhattan, The City of New York,
to be so transferred, in whole or from time to time in part, without charge, and
the Trustee shall  authenticate and deliver,  upon such transfer of each portion
of such Global Note, an equal aggregate Principal Amount at Maturity of Notes of
authorized denominations. Any portion of the Global Note transferred pursuant to
this  Section  shall  be  executed,   authenticated   and   delivered   only  in
denominations of $1,000 and any integral multiple thereof and registered in such
names as the  Depository  shall  direct.  Any Note  delivered in exchange for an
interest  in the Global  Note  shall,  except as  otherwise  provided by Section
2.5(d), bear the restricted notes legend set forth in Exhibit A hereto.

          (d)  Subject to the provisions of Section 2.7(c), the registered 
Holder of the  Global  Note may grant  proxies  and  otherwise  authorize  any
person, including  agent  members,  participants  and  persons  that may hold  
interests through  agent  members,  to take any action  which a Holder is 
entitled to take under this Indenture or the Notes.

          (e)  In the event of the occurrence of any of the events specified in
Section  2.7(b),  the Issuer  will  promptly  make  available  to the  Trustee a
reasonable supply of certificated Notes in definitive, fully registered form.

          SECTION 2.8  Cancellation.  The Issuer at any time may deliver
Notes to the Trustee for cancellation.  The Registrar and the Paying Agent shall
forward  to the  Trustee  any  Notes  surrendered  to them for  registration  of
transfer,  exchange  or payment.  The  Trustee and no one else shall  cancel all
Notes   surrendered  for   registration  of  transfer,   exchange,   payment  or
cancellation and deliver such cancelled Notes to the Issuer.  The Issuer may not
issue new Notes to  replace  Notes it has  redeemed,  paid or  delivered  to the
Trustee for cancellation.

          SECTION 2.9  CUSIP Numbers.  The Issuer in issuing the Notes
may use "CUSIP"  numbers  (if then  generally  in use),  and, if so, the Trustee
shall use "CUSIP"  numbers in notices of redemption as a convenience to Holders;
provided that any such notice may state that no representation is made as to the
correctness  of such  numbers  either as printed on the Notes or as contained in
any notice of a  redemption  and that  reliance  may be placed only on the other
identification  numbers printed on the Notes,  and any such redemption shall not
be  affected  by any defect in or  omission  of such  numbers.  The Issuer  will
promptly notify the Trustee of any change in the CUSIP numbers.


                                  ARTICLE THREE

                    COVENANTS OF THE ISSUER AND THE GUARANTOR
                    -----------------------------------------

          SECTION 3.1  Payment of Notes.  The Issuer covenants and
agrees for the benefit of the Noteholders  that it will duly and punctually make
all payments in respect of the Notes on the dates and in the manner  provided in
the Notes or pursuant to this  Indenture.  Principal  Amount at Maturity,  Issue
Price, accrued Original Issue Discount,  Redemption Price and interest,  if any,
shall be considered  paid on the applicable date due if on such date the Trustee
or the  Paying  Agent  holds,  in  accordance  with  this  Indenture,  money  or
securities, if permitted hereunder,  sufficient to pay all such amounts then due
and the Trustee or

                                                     
                                       15

<PAGE>



the Paying Agent, as the case may be, is not prohibited pursuant to the terms of
this Indenture from paying such money to the Noteholders on that date.

          SECTION 3.2  Offices for Payments, etc.  So long as Notes are
outstanding hereunder, the Issuer will maintain in the Borough of Manhattan, The
City of New  York,  an office or  agency  where the Notes may be  presented  for
payment or for exchange as provided in this Indenture and where the Notes may be
presented for registration of transfer as provided in this Indenture.

          The Issuer and the Guarantor will maintain in the Borough of
Manhattan,  The City of New York,  an office or agency where notices and demands
to or upon the Issuer or the Guarantor in respect of the Notes or this Indenture
may be served.

          The Issuer and the Guarantor will give to the Trustee written notice
of the  location  of each such  office or agency and of any  change of  location
thereof.  In case the Issuer or the Guarantor  shall fail to maintain any office
or agency  required by this  Section to be located in the Borough of  Manhattan,
The City of New York,  or shall fail to give such  notice of the  location or of
any  change  in  the  location  of  any  of  the  above   offices  or  agencies,
presentations and demands may be made and notices may be served at the Corporate
Trust Office of the Trustee.

          The Issuer may from time to time designate one or more additional
offices or agencies  where the Notes may be  presented  for  payment,  where the
Notes may be presented for exchange as provided in this  Indenture and where the
Notes  may be  presented  for  registration  of  transfer  as  provided  in this
Indenture,  and the Issuer may from time to time  rescind any such  designation;
provided,  however,  that no such  designation or rescission shall in any manner
relieve the Issuer of its  obligation to maintain any office or agency  required
to be provided for in this Section.  The Issuer will give to the Trustee  prompt
written notice of any such designation or rescission thereof.

          SECTION 3.3  Appointment  to Fill  a  Vacancy  in  Office of Trustee.
The  Issuer,  whenever   necessary   to  avoid  or  fill  a  vacancy  in  the
office  of  Trustee,  will  appoint,  in  the manner  provided  in  Section 
6.10, a Trustee,  so that there shall at all times be a Trustee with respect to 
the Notes hereunder.

          SECTION 3.4  Paying Agents.  Whenever the Issuer shall appoint a
Paying Agent other than the Trustee  with  respect to Notes,  it will cause such
Paying Agent to execute and deliver to the Trustee an  instrument  in which such
agent shall agree with the Trustee, subject to the provisions of this Section:

               (a)  that  it  will  hold  all  sums received by it as such agent
          for  payments in respect of the Notes  (whether  such sums have
          been  paid  to it by the Issuer or the Guarantor) in trust for the 
          benefit  of  the  Holders of the  Notes  or  of the Trustee, and
          
               (b) that it will  give  the  Trustee notice  of any  failure  by
          the  Issuer or the Guarantor  to make any  payments in respect of
          the  Notes  when  the  same  shall  be due and payable, and
          

                                                 
                                       16

<PAGE>



               (c)  that  at any  time  during  the continuance of any such 
          failure referred to in the  foregoing  paragraph  (b),  it will  upon
          written  request of the Trustee  forthwith pay to the  Trustee  all
          sums so held in trust by such agent.
          

          The Issuer will, on or prior to each due date of payments in respect
of any  Notes,  deposit  with the  Paying  Agent a sum  sufficient  to make such
payment so becoming  due,  and (unless  such Paying  Agent is the  Trustee)  the
Issuer will promptly notify the Trustee of any failure to take such action.

          If the Issuer shall act as its own Paying Agent with respect to the
Notes,  it will, on or before each due date of payments in respect of any Notes,
set aside,  segregate  and hold in trust for the  benefit of the  Holders of the
Notes a sum  sufficient  to pay such  payment so becoming  due.  The Issuer will
promptly notify the Trustee of any failure to take such action.

          Anything in this section to the contrary notwithstanding, but subject
to Section  10.1,  the Issuer may at any time,  for the  purpose of  obtaining a
satisfaction and discharge with respect to the Notes hereunder, or for any other
reason,  pay or cause to be paid to the  Trustee  all sums held in trust for the
Notes by the Issuer or any Paying Agent hereunder,  as required by this Section,
such sums to be held by the Trustee upon the trust herein contained.

          Anything in this Section to the contrary notwithstanding, the
agreement  to hold sums in trust as provided  in this  Section is subject to the
provisions of Sections 10.3 and 10.4.

          SECTION 3.5  Written Statement to Trustee. The Guarantor will
deliver to the Trustee on or before April 30 in each year  (beginning with April
30, 1998) an  Officers'  Certificate  (which need not comply with Section  11.5)
stating that in the course of the  performance by the signers of their duties as
officers of the Guarantor  they would  normally have knowledge of any default by
the Guarantor in the  performance of any covenants  contained in this Indenture,
stating  whether or not they have  knowledge  of any such  default  and,  if so,
specifying  each such default of which the signers have knowledge and the nature
thereof.

          SECTION 3.6  Limitation on Secured Debt.  So long as any of the
Notes remain  Outstanding,  the  Guarantor  will not create or incur any Secured
Debt  without  in any such  case  effectively  providing  concurrently  with the
creation or incurrence of any such Secured Debt that the Notes then  Outstanding
(together  with,  if the  Guarantor  shall so  determine,  any other  Debt of or
guarantee by the Guarantor  ranking equally with the Guarantee and then existing
or  thereafter  created)  shall be secured  equally and ratably with (or, at the
option of the Guarantor,  prior to) such Secured Debt, unless  immediately after
the incurrence of such Secured Debt (and after giving effect to the  application
of the proceeds, if any, therefrom),  the aggregate principal amount of all such
Secured Debt,  together with the aggregate amount of Capitalized Rent in respect
of Sale and Leaseback  Transactions (other than Sale and Leaseback  Transactions
described in clauses (a) to (e),  inclusive,  of Section 3.7),  would not exceed
10% of  Consolidated  Capitalization;  provided,  however,  that  the  foregoing
restrictions  shall not  apply to,  and there  shall be  excluded  in  computing
Secured Debt for the purpose of 

                                       17


<PAGE>



such restrictions, Secured Debt secured by:

              (a)  Liens on property existing at the time of acquisition of such
         property by the Guarantor, or Liens to secure the payment of all or any
         part of the purchase  price of property  acquired or constructed by the
         Guarantor  (including any improvements to existing property) created at
         the  time of or  within  270 days  following  the  acquisition  of such
         property by the Guarantor, or Liens to secure any Secured Debt incurred
         by the Guarantor  prior to, at the time of or within 270 days following
         the  acquisition of such  property,  which Secured Debt is incurred for
         the purpose of financing all or any part of the purchase price thereof;
         provided,  however, that in the case of any such acquisition,  the Lien
         shall  not apply to any  property  theretofore  owned by the  Guarantor
         (including  property  transferred by the Guarantor to any subsidiary of
         the Guarantor in contemplation of or in connection with the creation of
         such Lien) or to any property of the Guarantor  other than the property
         so acquired  (other than, in the case of  construction  or improvement,
         any  theretofore  unimproved  real property or portion thereof on which
         the property so constructed, or the improvement, is located);

               (b) Liens on property of a Person (i) existing at the time such
         Person is merged into or consolidated with the Guarantor or at the time
         of a sale, lease or other  disposition of the properties of a Person as
         an entirety or  substantially  as an  entirety to the  Guarantor,  (ii)
         resulting from such merger,  consolidation,  sale, lease or disposition
         by virtue of any Lien on  property  granted by the  Guarantor  prior to
         such merger,  consolidation,  sale,  lease or  disposition  (and not in
         contemplation  thereof or in  connection  therewith)  which  applies to
         after-acquired  property of the Guarantor or (iii)  resulting from such
         merger, consolidation, sale, lease or disposition pursuant to a Lien or
         contractual  provision  granted or entered into by such Person prior to
         such merger, consolidation,  sale, lease or disposition (and not at the
         request  of the  Guarantor);  provided,  however,  that any  such  Lien
         referred  to in  clause  (i) shall  not  apply to any  property  of the
         Guarantor  other  than the  property  subject  thereto at the time such
         Person or  properties  were  acquired and any such Lien  referred to in
         clause (ii) or (iii) shall not apply to any  property of the  Guarantor
         other than the property so acquired;

                (c) Liens existing on the date of this Indenture;

                (d)  Liens  in  favor  of  a   government   or governmental 
         entity to secure partial  progress,  advance or other  payments,  or 
         other  obligations, pursuant to any contract or statute or to secure 
         any Debt  incurred for the  purpose  of  financing  all or any part of
         the cost of  acquiring, constructing   or  improving   the  property  
         subject  to  such  Liens (including,  without  limitation,  Liens  
         incurred in  connection  with pollution control, industrial revenue, 
         private activity bond or similar financing);

               (e) Liens arising by reason of deposits  with, or the giving of 
         any form of security  to, any  governmental  agency or any body created
         or approved by law or governmental  regulation,  which Lien is required
         by law or governmental regulation as a condition to the transaction of 
         any business  or the  exercise  of any  privilege, franchise, license 
         or permit;

               (f)   Liens for taxes, assessments or governmental charges or 
         levies not  yet   delinquent  or   governmental   charges  or levies

                                                       
                                       18

<PAGE>



         already delinquent, the validity of which charge or levy is being
         contested in good faith and for which any reserves required in
         accordance with generally accepted accounting principles have been
         established;

               (g) Liens  (including  judgment liens) arising in connection with
         legal proceedings  so long as such  proceedings  are being  contested 
         in good faith and, in the case of judgment liens,  execution  thereon 
         is stayed and for  which any  reserves  required  in  accordance  with 
         generally accepted accounting principles have been established; and

               (h)  any extension, renewal or replacement (or successive
         extensions,  renewals or  replacements) in whole or in part of any Lien
         referred to in the foregoing clauses (a) to (g),  inclusive;  provided,
         however,  that the  principal  amount of Secured Debt  secured  thereby
         shall not exceed the principal  amount of Secured Debt secured  thereby
         at the time of such extension,  renewal or  replacement,  and that such
         extension,  renewal or replacement shall be limited to all or a part of
         the property  which  secured the Lien so extended,  renewed or replaced
         (plus improvements to such property).

          SECTION 3.7  Limitation on Sale and Leaseback.  The Guarantor
will  not  enter  into any Sale and  Leaseback  Transaction  unless  immediately
thereafter (and after giving effect to the application of the proceeds,  if any,
therefrom),  the  aggregate  amount of  Capitalized  Rent in respect of Sale and
Leaseback  Transactions,  together  with the aggregate  principal  amount of all
Secured  Debt  (other  than  Secured  Debt  described  in  clauses  (a) to  (h),
inclusive, of Section 3.6), would not exceed 10% of Consolidated Capitalization;
provided, however, that the foregoing restrictions shall not apply to, and there
shall be excluded in computing the aggregate  amount of Capitalized Rent for the
purpose of such restrictions, the following Sale and Leaseback Transactions:

          (a)  any Sale and Leaseback Transaction entered into to finance the
         payment of all or any part of the purchase  price of property  acquired
         or constructed by the Guarantor (including any improvements to existing
         property)  or entered  into prior to, at the time of or within 270 days
         after the acquisition or construction of such property,  which Sale and
         Leaseback  Transaction is entered into for the purpose of financing all
         or  part of the  purchase  or  construction  price  thereof;  provided,
         however,  that in the  case of any  such  acquisition,  such  Sale  and
         Leaseback Transaction shall not involve any property transferred by the
         Guarantor to any subsidiary of the Guarantor in  contemplation of or in
         connection  with such Sale and  Leaseback  Transaction  or involve  any
         property of the  Guarantor  other than the property so acquired  (other
         than,  in the case of  construction  or  improvement,  any  theretofore
         unimproved  real  property or portion  thereof on which the property so
         constructed, or the improvement, is located);

          (b)  any Sale and Leaseback Transaction involving property of a
         Person  existing at the time such Person is merged into or consolidated
         with the Guarantor or at the time of a sale, lease or other disposition
         of the  properties  of a Person as an entirety or  substantially  as an
         entirety to the Guarantor;

          (c)  any Sale and Leaseback Transaction in which the lessor is a

                                                     
                                       19

<PAGE>



         government  or  governmental   entity  and  which  Sale  and  Leaseback
         Transaction  is entered  into to secure  partial  progress,  advance or
         other  payments,  or other  obligations,  pursuant  to any  contract or
         statute or to secure any Debt incurred for the purpose of financing all
         or any part of the  cost of  constructing  or  improving  the  property
         subject  to such Sale and  Leaseback  Transaction  (including,  without
         limitation, Sale and Leaseback Transactions incurred in connection with
         pollution control, industrial revenue, private activity bond or similar
         financing);

          (d)  any Sale and Leaseback Transaction involving the extension,
         renewal  or  replacement   (or  successive   extensions,   renewals  or
         replacements)  in  whole or in part of a lease  pursuant  to a Sale and
         Leaseback  Transaction referred to in the foregoing clauses (a) to (c),
         inclusive;  provided,  however,  that such lease extension,  renewal or
         replacement  shall be limited  to all or any part of the same  property
         leased  under  the  lease  so  extended,   renewed  or  replaced  (plus
         improvements to such property); and

          (e)  any Sale and Leaseback Transaction the net proceeds of which
         are at least  equal to the fair  value (as  determined  by the Board of
         Directors) of the property  leased  pursuant to such Sale and Leaseback
         Transaction,  so long as within 270 days of the effective  date of such
         Sale and Leaseback  Transaction,  the Guarantor applies (or irrevocably
         commits to an escrow  account for the  purpose or purposes  hereinafter
         mentioned)  an  amount  equal  to the net  proceeds  of such  Sale  and
         Leaseback  Transaction  to either (x) the  purchase  of other  property
         having a fair value at least  equal to the fair  value of the  property
         leased  in such Sale and  Leaseback  Transaction  and  having a similar
         utility and function,  or (y) the  retirement or repayment  (other than
         any  mandatory  retirement  or repayment at maturity) of (i) the Notes,
         (ii) other  Funded Debt of the  Guarantor  which ranks prior to or on a
         parity with the Notes or (iii)  indebtedness  of any  subsidiary of the
         Guarantor  maturing  by its  terms  more than one year from its date of
         issuance  (notwithstanding  that any  portion of such  indebtedness  is
         included in current  liabilities)  or preferred stock of any subsidiary
         of the Guarantor (other than any such indebtedness owed to or preferred
         stock  owned by the  Guarantor  or any  subsidiary  of the  Guarantor);
         provided, however, that in lieu of applying an amount equivalent to all
         or any part of such net proceeds to such  retirement  or repayment  (or
         committing  such an amount to an escrow account for such purpose),  the
         Guarantor  may  deliver to the  Trustee  Outstanding  Notes and thereby
         reduce the amount to be applied  pursuant  to (y) of this clause (e) by
         an amount  equivalent to the aggregate  Principal Amount at Maturity of
         the Notes so delivered.

          SECTION 3.8  Voting Control of the Issuer.  The Guarantor shall at
all times maintain beneficial  ownership,  directly or indirectly through one or
more  Subsidiaries,  of that number of shares of Capital Stock of the Issuer (or
any entity into which the Issuer is merged or  consolidated  in accordance  with
Article  Nine) with at least a majority of the total  voting power of the Issuer
entitled  (without  regard to the occurrence of any  contingency) to vote in the
election of directors (or persons performing similar functions).

          SECTION 3.9  Insurance.  The Guarantor shall, and shall cause
each of its  Subsidiaries to,  maintain,  with  financially  sound and reputable
insurers,  insurance  with respect to its  respective  properties and businesses
against such casualties and

                                                      
                                       20

<PAGE>



contingencies,  of such  types,  on such  terms and in such  amounts  (including
deductibles,   co-insurance  and   self-insurance,   if  adequate  reserves  are
maintained  with  respect  thereto) as is  customary  in the case of entities of
established  reputations engaged in the same or similar businesses and similarly
situated.


                                  ARTICLE FOUR

                          NOTEHOLDERS LISTS AND REPORTS
                          BY THE ISSUER AND THE TRUSTEE
                          -----------------------------

          SECTION 4.1  Issuer to Furnish Trustee Names and Addresses of
Noteholders. The Issuer covenants and agrees that it will furnish or cause to be
furnished  to the  Trustee a list in such  form as the  Trustee  may  reasonably
require of the names and addresses of the Holders of the Notes:

               (a)  at least semi-annually on October 15 and April 15, and

               (b)  at  such  other  times  as  the Trustee may request in
          writing, within 30 days after  receipt  by  the  Issuer  of  any  such
          request,  as of a date not  more  than 15 days prior  to  the  time
          such information  is furnished,
          
provided  that if and so long as the  Trustee  shall be the  Registrar  for such
Notes and such Notes are registered on the register of the Registrar,  such list
shall not be required to be furnished.

          SECTION 4.2  Preservation  and  Disclosure  of Noteholders Lists. 
(a)  The  Trustee  shall  preserve,  in as  current  a  form  as  is  reasonably
practicable, all information as to the names and addresses of the Holders of the
Notes (i)  contained  in the most  recent  list  furnished  to it as provided in
Section 4.1, (ii) received by it in the capacity of Registrar, if so acting, and
(iii) filed with it within two preceding  years pursuant to Section  4.4(c)(ii).
The Trustee may destroy any list furnished to it as provided in Section 4.1 upon
receipt of a new list so furnished.

               (b)  In case three or more Holders of Notes (hereinafter referred
to as "applicants") apply in writing to the Trustee  and  furnish to the Trustee
reasonable  proof that each such  applicant  has owned a Note for a period of at
least six months  preceding the date of such  application,  and such application
states that the applicants  desire to  communicate  with other Holders of Notes,
then the  Trustee  shall,  within five  Business  Days after the receipt of such
application, at its election, either

                    (i) afford to such applicants access
                to the  information  preserved  at the time by
               the Trustee in accordance  with the provisions
               of subsection (a) of this Section, or

                    (ii)  inform such  applicants  as to
               the  approximate  number of Holders of all the
               Notes whose names and addresses  appear in the
               information  preserved  at  the  time  by  the
               Trustee, in accordance

                                                       
                                       21

<PAGE>



               with the provisions of such subsection (a) and
               as to the approximate  cost of mailing to such
               Holders   the   form   of   proxy   or   other
               communication,   if  any,  specified  in  such
               application.

          If the Trustee shall elect not to afford to such applicants
access to such information,  the Trustee shall, upon the written request of such
applicants,  mail to all Holders of the Notes, whose name and address appears in
the  information  preserved  at the time by the Trustee in  accordance  with the
provisions  of  such  subsection  (a) a copy  of the  form  of  proxy  or  other
communication  which is specified in such request,  with  reasonable  promptness
after a tender to the Trustee of the  material  to be mailed and of payment,  or
provision for the payment, of the reasonable expenses of mailing,  unless within
five days after such tender the Trustee shall mail to such applicants,  together
with a copy of the  material  to be mailed,  a written  statement  to the effect
that, in the opinion of the Trustee,  such mailing would be contrary to the best
interests  of the Holders of the Notes or would be in  violation  of  applicable
law. Such written statement shall specify the basis of such opinion.

          (c)  Each  and   every   Holder of Notes  by receiving and holding the
same,  agrees  with the Issuer and the Trustee  that  neither the Issuer nor the
Trustee nor any agent of the Issuer or the Trustee shall be held  accountable by
reason of the  disclosure of any such  information as to the names and addresses
of the Holders of Notes in accordance  with the  provisions of subsection (b) of
this Section,  regardless of the source from which such information was derived,
and that the  Trustee  shall not be held  accountable  by reason of mailing  any
material pursuant to a request made under such subsection (b).

          (d) The Issuer shall upon  written  request to the Trustee (or, if
applicable, the Registrar) be entitled to receive a list of the Holders of any
and all of the Notes.

          SECTION 4.3  Reports by the Issuer and the Guarantor.  The Issuer
and the Guarantor covenant:

          (a) to file with the Trustee, within 15 days after either the Issuer 
         or the Guarantor is required to file the same with the SEC, copies 
         of the annual reports and of the information,  documents and other 
         reports (or copies of such portions of any of the foregoing  as the SEC
         may from time to time by rules  and  regulations  prescribe)  which  
         either the Issuer or the  Guarantor  may be required  to file with the 
         Commission pursuant to Section 13 or Section 15(d) of the Exchange Act;
         and

          (b) to transmit by mail to the  Holders  of Notes within 30 days after
         the filing  thereof with the  Trustee,  in the manner and to the extent
         provided  in  Section  4.4(c),   such  summaries  of  any  information,
         documents and reports  required to be filed by either the Issuer or the
         Guarantor pursuant to subsection (a) of this Section as may be required
         to be transmitted to such Holders by rules and  regulations  prescribed
         from time to time by the SEC.

          SECTION 4.4  Reports by the Trustee.  (a)  Within 60 days after
May 15 of each year,  commencing  with the year 1998, the Trustee shall transmit
by mail to the  Holders of the Notes,  as  provided  in  subsection  (c) of this
Section, a brief report dated as of such May 15 with respect to

                                                      
                                       22

<PAGE>



          (i)  its eligibility under Section 6.9 and its qualification under 
         Section 6.8, or in lieu thereof, if to the best of its knowledge it has
         continued to be eligible and qualified  under such Sections,  a written
         statement to such effect;

          (ii) the  character and amount of any advances (and if the Trustee
         elects so to state, the  circumstances  surrounding the making thereof)
         made by the Trustee (as such) which  remain  unpaid on the date of such
         report and for the reimbursement of which it claims or may claim a lien
         or charge, prior to that of the Notes, on any property or funds held or
         collected  by it as  Trustee,  except  that the  Trustee  shall  not be
         required  (but may elect) to report such  advances if such  advances so
         remaining  unpaid at any time  aggregate not more than 1/2 of 1% of the
         Principal  Amount at Maturity of the Notes  Outstanding  on the date of
         such report;

          (iii) the amount,  interest  rate and maturity date of all other
         indebtedness owing by the Issuer or the Guarantor to the Trustee in its
         individual   capacity  on  the  date  of  such  report,  with  a  brief
         description  of any  property  held as  collateral  security  therefor,
         except any indebtedness based upon a creditor  relationship  arising in
         any manner described in Section 6.13 (b) (2), (3), (4) or (6);

          (iv)  the property and funds, if any, physically in the possession of
         the Trustee (as such) on the date of such report; and

          (v)  any action taken by the Trustee in the performance of its duties
         under this Indenture which it has not previously  reported and which in
         its opinion materially affects the Notes, except action in respect of a
         default,  notice  of  which  has  been  or is to be  withheld  by it in
         accordance with the provisions of Section 5.11.

          (b)  The Trustee shall transmit to the Holders of the Notes, as
provided in subsection  (c) of this Section,  a brief report with respect to the
character and amount of any advances (and if the Trustee elects so to state, the
circumstances  surrounding  the making  thereof)  made by the Trustee,  as such,
since the date of the last  report  transmitted  pursuant to the  provisions  of
subsection  (a)  of  this  Section  (or  if no  such  report  has  yet  been  so
transmitted, since the date of this Indenture) for the reimbursement of which it
claims or may claim a lien or charge, prior to that of the Notes, on property or
funds  held or  collected  by it as  Trustee  and  which  it has not  previously
reported  pursuant to this  subsection (b), except that the Trustee shall not be
required (but may elect) to report such  advances if such advances  remaining at
any time aggregate 10% or less of the Principal  Amount at Maturity of the Notes
Outstanding  at such time,  such report to be  transmitted  within 90 days after
such time.

          (c) Reports  pursuant to this Section shall be
transmitted by mail:

          (i)  to all Holders of the Notes, as the names and addresses of such
         Holders appear upon the registry books of the Registrar;

          (ii) to such  other  Holders of Notes as have,
within two years preceding such transmission, filed their names and addresses 
with the Trustee for that purpose; and


                                       23

<PAGE>



          (iii)  except in the case of reports  pursuant
to subsection (b), to each Holder of a Note whose name and  address are  
preserved  at the time by the Trustee as provided in Section 4.2(a).


                                  ARTICLE FIVE

                     REMEDIES OF THE TRUSTEE AND NOTEHOLDERS
                               ON EVENT OF DEFAULT
                     ---------------------------------------
         
          SECTION 5.1  Event of Default Defined; Acceleration of Maturity;
Waiver of Default.  "Event of Default",  wherever used herein, means each of the
following  events which shall have  occurred  and be  continuing  (whatever  the
reason  for  such  Event of  Default  and  whether  it  shall  be  voluntary  or
involuntary  or be effected  by  operation  of law or pursuant to any  judgment,
decree  or  order  of  any  court  or  any  order,  rule  or  regulation  of any
administrative or governmental body):

          (a)  default in the payment of all or any part of the Principal Amount
         at Maturity, Issue Price, accrued Original Issue Discount or Redemption
         Price on any Note as and when the same shall  become  due and  payable,
         whether at maturity, upon any redemption,  by declaration or otherwise;
         or

          (b) failure on the part of the Guarantor or the Issuer duly to observe
         or perform any other of the  covenants or agreements on the part of the
         Guarantor  or the  Issuer,  as the case may be, in the Notes or in this
         Indenture  contained  for a period  of 90 days  after the date on which
         written notice  specifying such failure,  stating that such notice is a
         "Notice of Default"  hereunder and demanding  that the Guarantor or the
         Issuer,  as the case may be, remedy the same, shall have been given (i)
         (A) in  person to the  Chairman,  the  President,  the  Executive  Vice
         President - Finance or the  Treasurer of the  Guarantor and the Issuer,
         promptly  followed by notice by  registered or certified  mail,  return
         receipt  requested,  by the Trustee,  or (B) by registered or certified
         mail, return receipt requested,  to the Guarantor and the Issuer by the
         Trustee,  or (ii) by  registered  or  certified  mail,  return  receipt
         requested, to the Guarantor,  the Issuer and the Trustee by the Holders
         of not less than 25% in aggregate  Principal  Amount at Maturity of the
         Outstanding Notes; or

          (c)  the Guarantor shall fail to pay any principal of, premium or
         interest on or any other  amount  payable in respect of any Debt of the
         Guarantor that is outstanding in an aggregate principal amount equal to
         or  greater  than 2% of  Consolidated  Capitalization,  when  the  same
         becomes  due and  payable  (whether  by  scheduled  maturity,  required
         prepayment,  acceleration, demand or otherwise), and such failure shall
         continue after the applicable  grace period,  if any,  specified in the
         agreement or instrument  relating to such Debt;  or any default  occurs
         under any instrument under which there is at the time  outstanding,  or
         by which  there  may be  secured  or  evidenced,  any such  Debt of the
         Guarantor that is outstanding in an aggregate principal amount equal to
         or greater  than 2% of  Consolidated  Capitalization  which  results in
         acceleration  (whether by declaration or  automatically)  of such Debt;
         provided,  however,  that it shall not  constitute  an Event of Default
         hereunder as long as the Guarantor is contesting such

                                                     
                                       24

<PAGE>



         default or  acceleration  in good faith and by appropriate  proceedings
         and no actual  acceleration  of such Debt of the  Guarantor  shall have
         occurred; or

          (d)  the Guarantee ceases to be in full force and effect or the
         Guarantor or any Person acting on behalf of the Guarantor shall deny or
         disaffirm the Guarantor's obligations under the Guarantee; or

          (e)  a court having jurisdiction in the premises shall enter a decree
         or order for  relief in respect  of the  Guarantor  or the Issuer in an
         involuntary case under any applicable  bankruptcy,  insolvency or other
         similar  law now or  hereafter  in effect,  or  appointing  a receiver,
         liquidator,  assignee,  custodian,  trustee or sequestrator (or similar
         official) of the Guarantor or the Issuer or for any substantial part of
         the property of the Guarantor or the Issuer, or ordering the winding up
         or liquidation of the affairs of the Guarantor or the Issuer,  and such
         decree or order shall remain  unstayed and in effect for a period of 60
         consecutive days; or

          (f) the Guarantor or the Issuer shall commence a voluntary case
         under any applicable bankruptcy, insolvency or other similar law now or
         hereafter in effect,  or consent to the entry of an order for relief in
         an involuntary  case under any such law, or consent to the  appointment
         or taking possession by a receiver,  liquidator,  assignee,  custodian,
         trustee or sequestrator  (or similar  official) of the Guarantor or the
         Issuer or for any substantial  part of the property of the Guarantor or
         the  Issuer,  or  make  any  general  assignment  for  the  benefit  of
         creditors.

If an Event of  Default  (other  than an Event of  Default  described  in clause
5.1(e) or 5.1(f)) shall have occurred and be  continuing,  then, and in each and
every such case,  unless the  principal  of all of the Notes shall have  already
become due and  payable,  either the Trustee or the Holders of not less than 25%
in  aggregate  Principal  Amount at Maturity of the Notes then  Outstanding,  by
notice in writing to the  Guarantor  and the Issuer (and to the Trustee if given
by such Holders),  may declare the Issue Price of all the Notes then Outstanding
and the Original  Issue Discount  accrued to the date of such  declaration to be
due and payable immediately, and upon any such declaration the same shall become
immediately due and payable.  If an Event of Default  described in clause 5.1(e)
or 5.1(f)  shall have  occurred  and be  continuing,  the Issue Price on all the
Notes then  Outstanding  and the Original Issue Discount  accrued  thereon shall
thereby become and be  immediately  due and payable  without any  declaration or
other act on the part of the Trustee or any Noteholders.

          The foregoing paragraph, however, is subject to the condition that if,
at any time after the Issue Price and  accrued  Original  Issue  Discount of the
Notes shall have been so declared  due and  payable,  and before any judgment or
decree for the payment of the moneys due shall have been  obtained or entered as
hereinafter  provided,  the  Guarantor or the Issuer shall pay or shall  deposit
with  the  Trustee  a sum  sufficient  to pay the  principal  including  accrued
Original  Issue Discount of all Notes which shall have become due otherwise than
by such  declaration or  acceleration  (with interest upon such amounts,  to the
extent that payment of such interest is enforceable under applicable law, at the
same rate as the yield to maturity  on the Notes to the date of such  payment or
deposit) and such amount as shall be sufficient to cover reasonable compensation
to the Trustee,  its agents,  attorneys and counsel,  and all other expenses and
liabilities  incurred,  and all advances made, by the Trustee except as a result
of negligence or bad faith, and if any and all Events of Default  under this

                                                     
                                       25

<PAGE>



Indenture,  other than the  non-payment of amounts on the Notes which shall have
become due by such declaration or acceleration, shall have been cured, waived or
otherwise remedied as provided herein--then, and in every such case, the Holders
of a majority in  aggregate  Principal  Amount at Maturity of all the Notes then
Outstanding,  by  written  notice to the  Guarantor  and the  Issuer  and to the
Trustee,  may waive all defaults and rescind and annul such  declaration and its
consequences,  but no such waiver or rescission and annulment shall extend to or
shall  affect  any  subsequent  default  or shall  impair  any right  consequent
thereon.

          For purposes of the definition of "Event of Default," "Capitalization"
shall  mean the total of (a) Debt,  (b) the par value or, in the case of Capital
Stock with no par value, a value stated on the books, of all outstanding  shares
of Capital Stock,  (c) the paid-in  surplus and retained  earnings (or minus the
net  surplus  deficit,  as the case may be),  (d)  deferred  taxes and  deferred
investment  tax credits,  (e)  Capitalized  Rent and (f)  minority  interests in
Subsidiaries.

          SECTION 5.2  Collection of Indebtedness by Trustee; Trustee May
Prove Debt.  The Issuer  covenants that (a) in case default shall be made in the
payment of any part of the Principal Amount at Maturity,  Issue Price, including
accrued Original Issue Discount or Redemption Price on the Notes as and when the
same shall become due and  payable,  whether at maturity,  upon  redemption,  by
declaration  or otherwise -- then,  upon demand of the Trustee,  the Issuer will
pay to the Trustee for the benefit of the Holders of the Notes the whole  amount
that then shall have become due and  payable on all the Notes (with  interest to
the date of such payment upon the overdue amounts, at the same rate as the yield
to maturity on the Notes); and in addition thereto, such further amount as shall
be  sufficient  to  cover  the  costs  and  expenses  of  collection,  including
reasonable  compensation to the Trustee, its agents,  attorneys and counsel, and
any expenses and  liabilities  incurred,  and all advances  made by the Trustee,
except as a result of its negligence or bad faith.

          Until such demand is made by the Trustee, the Issuer may make
payments in respect of the Notes to the Holders, whether or not the Notes are 
overdue.

          In case the Issuer shall fail forthwith to pay such amounts upon
such demand,  the Trustee,  in its own name and as trustee of an express  trust,
shall be entitled and empowered to institute any action or proceedings at law or
in equity for the  collection  of the sums so due and unpaid,  and may prosecute
any such action or proceedings to judgment or final decree,  and may enforce any
such judgment or final decree against the Issuer or the Guarantor upon the Notes
and collect in the manner  provided by law out of the  property of the Issuer or
the Guarantor upon the Notes,  wherever  situated the moneys adjudged or decreed
to be payable.

          In case there shall be pending proceedings relative to the Issuer or
the  Guarantor  upon the Notes under  Title 11 of the United  States Code or any
other applicable  Federal or state bankruptcy,  insolvency or other similar law,
or in case a receiver,  assignee  or trustee in  bankruptcy  or  reorganization,
liquidator,  sequestrator  or similar  official shall have been appointed for or
taken possession of the Issuer or its property or the Guarantor or its property,
or in case of any other comparable judicial  proceedings  relative to the Issuer
or  the  Guarantor,  or to the  creditors  or  property  of  the  Issuer  or the
Guarantor, the Trustee, irrespective of whether the Principal Amount at 

                                                 
                                       26

<PAGE>



Maturity,  Issue Price, accrued Original Issue Discount or Redemption Price of
the Notes  shall  then be due and payable as therein expressed or by declaration
or otherwise and irrespective of whether the Trustee shall have made any demand
pursuant to the provisions of this Section,  shall be entitled and empowered,
by intervention in such proceedings or otherwise:

          (a)  to file and prove a claim or claims for the amount of the Issue
         Price on the Notes then  Outstanding  and the Original  Issue  Discount
         accrued thereon owing and unpaid in respect of such Notes,  and to file
         such other  papers or  documents  as may be  necessary  or advisable in
         order to have the  claims  of the  Trustee  (including  any  claim  for
         reasonable  compensation  to the Trustee and its agents,  attorneys and
         counsel,   and  for  reimbursement  of  all  expenses  and  liabilities
         incurred, and all advances made, by the Trustee,  except as a result of
         negligence or bad faith) and of the Noteholders allowed in any judicial
         proceedings relative to the Issuer or the Guarantor or to the creditors
         or property of the Issuer or the Guarantor.

          (b)  unless prohibited by applicable law and regulations, to vote on
         behalf of the  Holders of the Notes in any  election  of a trustee or a
         standby  trustee in arrangement,  reorganization,  liquidation or other
         bankruptcy  or  insolvency  proceedings  or person  performing  similar
         functions in comparable proceedings, and

          (c) to collect and receive any moneys or other property payable or
         deliverable on any such claims,  and to distribute all amounts received
         with  respect to the claims of the  Noteholders  and of the  Trustee on
         their behalf; and any trustee, receiver, liquidator, custodian or other
         similar  official is hereby  authorized by each of the  Noteholders  to
         make payments to the Trustee,  and, in the event that the Trustee shall
         consent to the making of payments  directly to the Noteholders,  to pay
         to the Trustee such amounts as shall be sufficient to cover  reasonable
         compensation to the Trustee, and its agents, attorneys and counsel, and
         all other expenses and liabilities incurred,  and all advances made, by
         the Trustee except as a result of negligence or bad faith.

          Nothing herein contained shall be deemed to authorize the Trustee
to  authorize  or  consent  to or vote for or  accept  or adopt on behalf of any
Holder  any  plan of  reorganization,  arrangement,  adjustment  or  composition
affecting  the Notes or the rights of any Holder  thereof,  or to authorize  the
Trustee to vote in  respect  of the claim of any  Holder in any such  proceeding
except,  as  aforesaid,  to vote for the election of a trustee in  bankruptcy or
similar person.

          All rights of action and of asserting claims under this Indenture, or
under the Notes, may be enforced by the Trustee without the possession of any of
the Notes or the production  thereof on any trial or other proceedings  relative
thereto,  and any such action or proceedings  instituted by the Trustee shall be
brought  in its own name as trustee of an express  trust,  and any  recovery  of
judgment, subject to the payment of the expenses, disbursements and compensation
of the Trustee and its agents,  attorneys and counsel,  shall be for the ratable
benefit of the Holders of the Notes.

          In any proceedings brought by the Trustee (and also any proceedings 
involving the interpretation of any provision of this Indenture to which the 
Trustee shall be a party) the Trustee shall be held to represent all the Holders

                                                       
                                       27

<PAGE>



of the Notes, and it shall not be necessary to make any Holders of the Notes
parties to any such proceedings.

          SECTION 5.3  Application of Proceeds.  Any moneys collected by
the Trustee pursuant to this Article in respect of the Notes shall be applied in
the  following  order at the date or dates fixed by the Trustee  and, in case of
the  distribution  of such moneys upon  presentation  of the Notes in respect of
which moneys have been collected and stamping (or otherwise  noting) thereon the
payment,  or issuing Notes in reduced  Principal Amounts at Maturity in exchange
for the presented  Notes if only partially  paid, or upon  surrender  thereof if
fully paid:

          FIRST:  To the payment of costs and expenses of collection
         applicable to such series,  including  reasonable  compensation  to the
         Trustee and its agents,  attorneys  and counsel and of all expenses and
         liabilities incurred, and all advances made, by the Trustee except as a
         result of negligence or bad faith;

          SECOND:  To the payment of the whole amount then owing and
         unpaid upon the Notes for  Principal  Amount at Maturity,  Issue Price,
         accrued Original Issue Discount or Redemption Price, with interest upon
         the  overdue  amounts at the same rate as the yield to  maturity on the
         Notes; and in case such moneys shall be insufficient to pay in full the
         whole  amount so due and unpaid upon the Notes,  then to the payment of
         such amount without preference or priority, ratably to the aggregate of
         such amount; and

          THIRD:  To the payment of the remainder, if any, to the Issuer or
         any other person lawfully entitled thereto.

          SECTION 5.4  Suits for Enforcement.  In case an Event of Default
has  occurred,  has not been  waived and is  continuing,  the Trustee may in its
discretion  proceed  to protect  and  enforce  the  rights  vested in it by this
Indenture by such  appropriate  judicial  proceedings  as the Trustee shall deem
most  effectual to protect and enforce any of such  rights,  either at law or in
equity or in bankruptcy or otherwise,  whether for the specific  enforcement  of
any covenant or agreement  contained in this Indenture or in aid of the exercise
of any  power  granted  in this  Indenture  or to  enforce  any  other  legal or
equitable right vested in the Trustee by this Indenture or by law.

          SECTION 5.5 Restoration of Rights on Abandonment of Proceedings. In 
case the Trustee shall have proceeded to enforce any right under this Indenture
and such proceedings shall have been discontinued or abandoned for any reason,
or shall have been determined adversely to the Trustee, then, and in every such
case, the Issuer, the Guarantor and the Trustee shall be restored respectively
to their former positions and rights hereunder, and all rights, remedies and
powers of the Issuer, the Guarantor, the Trustee and the Noteholders shall
continue as though no such proceedings had been taken.

          SECTION 5.6  Limitations on Suits by Noteholders.  No Holder of
the Notes shall have any right by virtue or by availing of any provision of this
Indenture  to  institute  any  action  or  proceeding  at law or in equity or in
bankruptcy or otherwise upon or under or with respect to this Indenture,  or for
the appointment of a trustee, receiver, liquidator, custodian or other similar

                                                     
                                       28

<PAGE>



official or for any other remedy hereunder, unless such Holder previously shall
have given to the Trustee written notice of default and of the continuance  
thereof, as hereinbefore provided, and unless also the Holders of not less than 
25% in aggregate Principal Amount at Maturity of the Notes then Outstanding  
(determined as provided in Section 5.1 and voting as one class) shall have made 
written request upon the Trustee to institute such action or  proceedings  in 
its own name as trustee  hereunder and shall have offered to the Trustee  such  
reasonable  indemnity  as it may  require  against the costs, expenses and  
liabilities to be incurred  therein or thereby and the Trustee for 60 days after
its receipt of such notice, request and offer of indemnity shall have  failed  
to institute any such action or proceeding and no direction inconsistent  with 
such written request shall have been given to the Trustee pursuant to Section 
5.9; it being understood and intended, and being expressly covenanted  by the 
taker and  Holder of every Note with  every  other  taker and Holder and the 
Trustee,  that no one or more Holders of the Notes shall have any right in any 
manner  whatever by virtue or by availing of any  provision of this Indenture to
affect, disturb or prejudice the rights of any other Holder of the Notes,  or to
obtain or seek to obtain  priority over or preference to any other such Holder 
or to enforce any right under this  Indenture,  except in the manner herein 
provided and for the equal,  ratable and common benefit of all Holders of the 
Notes. For the protection and enforcement of the provisions of this Section,
each and every  Noteholder  and the Trustee  shall be entitled to such relief as
can be given either at law or in equity.

          SECTION 5.7  Unconditional Right of Noteholders to Institute
Certain  Suits.  Notwithstanding  any other  provision in this Indenture and any
provision of the Notes, the right of any Holder of the Notes to receive payments
in  respect  of such  Notes on or after the due dates for such  payments,  or to
institute  suit for the  enforcement of any such payment on or after such dates,
shall not be impaired or affected without the consent of such Holder.

          SECTION 5.8  Powers and Remedies Cumulative; Delay or Omission  Not 
Waiver of  Default.  Except as  provided  in the last sentence of Section 2.6 
and subject to Section 5.6, no right or remedy herein conferred upon or reserved
to the  Trustee or to the Holders of the Notes is intended to be exclusive of 
any other right or remedy, and every right and remedy shall, to the extent  
permitted by law, be cumulative and in addition to every other right and remedy 
given  hereunder or now or  hereafter  existing  at law or in equity or
otherwise.  The  assertion or employment  of any right or remedy  hereunder,  or
otherwise, shall not prevent the concurrent assertion or employment of any other
appropriate right or remedy.

          No delay or omission of the Trustee or of any Holder of the Notes to
exercise any right or power  accruing  upon any Event of Default  occurring  and
continuing  as  aforesaid  shall  impair  any  such  right  or power or shall be
construed  to be a  waiver  of any  such  Event of  Default  or an  acquiescence
therein;  and,  subject to Section  5.6,  every  power and remedy  given by this
Indenture  or by law to  the  Trustee  or to the  Holders  of the  Notes  may be
exercised from time to time, and as often as shall be deemed  expedient,  by the
Trustee or by the Holders of the Notes.

          SECTION 5.9  Control by Holders of the Notes.  The Holders of a
majority in  aggregate  Principal  Amount at Maturity of the  Outstanding  Notes
shall have the right to direct the time,  method,  and place of  conducting  any
proceeding for any remedy  available to the Trustee,  or exercising any trust or
power conferred upon the Trustee with respect to the Notes by this Indenture;

                                                       
                                       29

<PAGE>



provided that such  direction  shall not be otherwise than in accordance  with 
law and the  provisions of this Indenture and provided, further,  that (subject 
to the provisions of Section 6.1) the Trustee shall have the right to decline to
follow any such direction if the Trustee, being advised by counsel,  shall  
determine  that the action or proceeding so directed may not lawfully be taken 
or if the Trustee in good faith by its board of directors, its executive 
committee or a trust committee of directors or Responsible Officers of the 
Trustee shall  determine  that the action or  proceedings  so directed would
involve the Trustee in personal  liability  or that the actions or  forbearances
specified in or pursuant to such  direction  would be unduly  prejudicial to the
interests  of Holders of the Notes not joining in the giving of said  direction,
it being understood that (subject to Section 6.1) the Trustee shall have no duty
to ascertain whether or not such actions or forbearances are unduly  prejudicial
to such Holders.

          Nothing in this Indenture shall impair the right of the Trustee in its
discretion  to take any action  deemed  proper by the  Trustee  and which is not
inconsistent with such direction or directions by Noteholders.

          SECTION 5.10  Waiver of Past Defaults.  Prior to the declaration of
acceleration  of the  maturity  of the Notes as  provided  in Section  5.1,  the
Holders  of a  majority  in  aggregate  Principal  Amount  at  Maturity  of  the
Outstanding  Notes may on behalf of all the  Holders  waive any past  default or
Event of Default and its consequences with respect to the Notes, as described in
Section 5.1, except a default or an Event of Default in respect of a covenant or
provision hereof or of the Notes which cannot be modified or amended without the
consent of the Holder of each Note. In the case of any such waiver,  the Issuer,
the Guarantor, the Trustee and the Holders of all the Notes shall be restored to
their former positions and rights  hereunder,  respectively;  but no such waiver
shall extend to any  subsequent or other default or impair any right  consequent
thereon.

          Upon any such waiver, such default shall cease to exist and be
deemed to have been  cured and not to have  occurred,  and any Event of  Default
arising  therefrom shall be deemed to have been cured,  and not to have occurred
for every  purpose of this  Indenture;  but no such waiver  shall  extend to any
subsequent or other  default or Event of Default or impair any right  consequent
thereon.

          SECTION 5.11  Trustee to Give Notice of Default, But May Withhold
in Certain Circumstances. The Trustee shall, within 90 days after the occurrence
of a default with respect to the Notes,  give notice of all such defaults  known
to the  Trustee to all the  Holders of the Notes in the manner and to the extent
provided in Section  4.4(c),  unless in each case such defaults  shall have been
cured before the mailing of such notice (the term  "default"  for the purpose of
this Article  being hereby  defined to mean any event or condition  which is, or
with  notice  or  lapse of time or both  would  become,  an  Event of  Default);
provided that,  except in the case of default  described in Section 5.1(a),  the
Trustee  shall be  protected  in  withholding  such notice if and so long as the
board of directors, the executive committee or a trust committee of directors or
trustees  and/or  Responsible  Officers of the Trustee in good faith  determines
that the withholding of such notice is in the interests of the Noteholders.

          SECTION 5.12  Right of Court to Require Filing of Undertaking to
Pay Costs.  All parties to this Indenture agree, and each Holder of the Notes by
his acceptance thereof shall be deemed to have agreed, that any court may in its

                                                     
                                       30

<PAGE>



discretion require, in any suit for the enforcement of any right or remedy under
this Indenture or in any suit against the Trustee for any action taken, suffered
or omitted by it as Trustee, the filing by any party litigant in such suit of an
undertaking  to pay the  costs of such  suit,  and that  such  court  may in its
discretion  assess  reasonable  costs,  including  reasonable  attorneys'  fees,
against  any party  litigant  in such suit,  having due regard to the merits and
good  faith of the  claims or  defenses  made by such  party  litigant;  but the
provisions  of this  Section  shall  not  apply  to any suit  instituted  by the
Trustee,  to any suit  instituted  by any  Noteholder  or  group of  Noteholders
holding in the aggregate more than 10% in aggregate Principal Amount at Maturity
of the Notes, or to any suit instituted by any Noteholder for the enforcement of
the payment of the Principal Amount at Maturity,  Issue Price,  accrued Original
Issue  Discount or Redemption  Price of the Notes when the same shall become due
and payable.


                                   ARTICLE SIX

                             CONCERNING THE TRUSTEE
                             ----------------------

          SECTION 6.1  Duties and Responsibilities of the Trustee; During
Default;  Prior to Default. The Trustee,  prior to the occurrence of an Event of
Default  with respect to the Notes and after the curing or waiving of all Events
of Default  which may have  occurred  with respect to the Notes,  undertakes  to
perform such duties and only such duties as are  specifically  set forth in this
Indenture.  In case an Event of Default  with  respect to the Notes has occurred
(which has not been cured or waived),  the Trustee  shall  exercise  such of the
rights and powers  vested in it by this  Indenture,  and use the same  degree of
care and skill in their  exercise,  as a prudent man would exercise or use under
the circumstances in the conduct of his own affairs.

          No provision of this Indenture shall be construed to relieve the
Trustee from liability for its own negligent action, its own negligent failure
to act or its own wilful misconduct, except that

          (a)   prior  to  the  occurrence of an Event of Default with respect
         to the  Notes and after the  curing or  waiving  of all such  Events of
         Default which may have occurred with respect to the Notes:

               (i) the  duties and  obligations  of
          the Trustee with respect to the Notes shall be
          determined solely by the express provisions of
          this  Indenture,  and the Trustee shall not be
          liable  except  for  the  performance  of such
          duties and obligations as are specifically set
          forth  in  this  Indenture,   and  no  implied
          covenants  or  obligations  shall be read into
          this Indenture against the Trustee; and

               (ii) in the  absence of bad faith on
          the  part  of the  Trustee,  the  Trustee  may
          conclusively  rely,  as to  the  truth  of the
          statements and the correctness of the opinions
          expressed   therein,   upon  any   statements,
          certificates  or  opinions  furnished  to  the
          Trustee and conforming to the  requirements of
          this Indenture; but in the case of any such 

                                                      
                                       31

<PAGE>



          statements, certificates or opinions which by 
          any provision hereof are specifically required 
          to be furnished  to the Trustee, the Trustee  
          shall be under a duty to examine the same to 
          determine  whether or not they conform to the 
          requirements of this Indenture;

          (b)       the Trustee shall not be liable for any error of judgment
         made in good faith by a Responsible Officer or Responsible  Officers of
         the Trustee,  unless it shall be proved that the Trustee was  negligent
         in ascertaining the pertinent facts; and

          (c)       the Trustee shall not be liable with respect to any action
         taken or omitted to be taken by it in good faith in accordance  with an
         appropriate  direction of the Holders  pursuant to Section 5.9 relating
         to the time,  method and place of  conducting  any  proceeding  for any
         remedy  available  to the  Trustee,  or  exercising  any trust or power
         conferred upon the Trustee, under this Indenture.

          None of the provisions contained in this Indenture shall require the
Trustee to expend or risk its own funds or otherwise  incur  personal  financial
liability in the  performance  of any of its duties or in the exercise of any of
its rights or powers,  if there shall be reasonable  grounds for believing  that
the repayment of such funds or adequate  indemnity against such liability is not
reasonably assured to it.

          SECTION 6.2  Certain Rights of the Trustee.  Subject to Section 6.1:

          (a)       the Trustee may rely and shall be protected in acting or
         refraining  from acting upon any resolution,  Officers'  Certificate or
         other certificate,  statement,  instrument,  opinion,  report,  notice,
         request,  consent,  order, bond, debenture,  note, coupon,  security or
         other paper or  document  believed by it to be genuine and to have been
         signed or presented by the proper party or parties;

          (b)       any request, direction, order or demand of the Issuer or the
         Guarantor  mentioned  herein  shall  be  sufficiently  evidenced  by an
         Officers'  Certificate  (unless  other  evidence in respect  thereof be
         herein  specifically  prescribed);  and any  resolution of the Board of
         Directors of either the Issuer or the Guarantor may be evidenced to the
         Trustee by a copy thereof  certified  by the  secretary or an assistant
         secretary of the Issuer or the Guarantor, as applicable;

          (c)       the Trustee may consult with counsel and any written
         advice  or  any  Opinion  of  Counsel   shall  be  full  and   complete
         authorization  and protection in respect of any action taken,  suffered
         or omitted to be taken by it hereunder in good faith and in  accordance
         with such advice or Opinion of Counsel;

          (d)       the Trustee shall be under no obligation to exercise any of
         the trusts or powers  vested in it by this  Indenture  at the  request,
         order or direction of any of the Holders  pursuant to the provisions of
         this  Indenture,  unless such Holders shall have offered to the Trustee
         reasonable indemnity against the costs,  expenses and liabilities which
         might be incurred therein or thereby;

                                       32

<PAGE>



          (e)       the Trustee shall not be liable for any action taken or
         omitted by it in good faith and believed by it to be authorized or
         within the discretion, rights or powers conferred upon it by this 
         Indenture;

          (f)       prior to the occurrence of an Event of Default with respect
         to the  Notes and after the  curing or  waiving  of all such  Events of
         Default,  the Trustee shall not be bound to make any investigation into
         the facts or matters stated in any resolution,  certificate, statement,
         instrument, opinion, report, notice, request, consent, order, approval,
         appraisal,  bond, debenture,  note, coupon,  security or other paper or
         document  unless  requested  in writing so to do by the  Holders of not
         less than a majority in aggregate  Principal  Amount at Maturity of the
         then  Outstanding  Notes;  provided  that,  if  the  payment  within  a
         reasonable  time to the Trustee of the costs,  expenses or  liabilities
         likely to be incurred by it in the making of such  investigation is, in
         the opinion of the Trustee,  not  reasonably  assured to the Trustee by
         the security afforded to it by the terms of this Indenture, the Trustee
         may  require  reasonable  indemnity  against  such  costs,  expenses or
         liabilities  as a condition to proceeding;  the reasonable  expenses of
         every such investigation shall be paid by the Issuer or, if paid by the
         Trustee, shall be repaid by the Issuer upon demand; and

          (g)       the Trustee may execute any of the trusts or powers
         hereunder  or perform  any duties  hereunder  either  directly or by or
         through  agents or  attorneys  not  regularly  in its  employ,  and the
         Trustee shall not be  responsible  for any  misconduct or negligence on
         the part of any such agent or  attorney  appointed  with due care by it
         hereunder.

          SECTION 6.3  Trustee Not Responsible for Recitals, Disposition of
the Notes or Application of Proceeds Thereof.  The recitals contained herein and
in the Notes,  except the Trustee's  certificates  of  authentication,  shall be
taken as the statements of the Issuer, and the Trustee assumes no responsibility
for the correctness of the same. The Trustee makes no  representation  as to the
validity or sufficiency of this Indenture or of the Notes. The Trustee shall not
be  accountable  for the use or application by the Issuer of the Notes or of the
proceeds thereof.

          SECTION 6.4  Trustee and Agents May Hold Notes; Collections,
etc. The Trustee or any agent of the Issuer or the Trustee, in its individual or
any other  capacity,  may become the owner or pledgee of the Notes with the same
rights it would have if it were not the  Trustee  or such agent and,  subject to
Sections 6.8 and 6.13, may otherwise deal with the Issuer and receive,  collect,
hold and retain  collections  from the Issuer with the same rights it would have
if it were not the Trustee or such agent.

          SECTION 6.5  Moneys Held by Trustee.  Subject to the provisions
of Section 10.4, all moneys received by the Trustee shall, until used or applied
as herein  provided,  be held in trust  for the  purposes  for  which  they were
received,  but need not be  segregated  from  other  funds  except to the extent
required by mandatory  provisions  of law.  Neither the Trustee nor any agent of
the Issuer or the  Trustee  shall be under any  liability  for  interest  on any
moneys received by it hereunder.



                                       33

<PAGE>



          SECTION 6.6  Compensation and Indemnification of Trustee and Its
Prior Claim.  The Issuer covenants and agrees to pay to the Trustee from time to
time, and the Trustee shall be entitled to, reasonable compensation (which shall
not be  limited  by any  provision  of law in  regard to the  compensation  of a
trustee of an express  trust),  and the  Issuer  covenants  and agrees to pay or
reimburse   the  Trustee   upon  its  request  for  all   reasonable   expenses,
disbursements  and advances incurred or made by or on behalf of it in accordance
with  any  of  the  provisions  of  this  Indenture  (including  the  reasonable
compensation and the expenses and disbursements of its counsel and of all agents
and  other  persons  not  regularly  in its  employ)  except  any such  expense,
disbursement  or  advance  as may arise from its  negligence  or bad faith.  The
Issuer also  covenants  to  indemnify  the Trustee  for, and to hold it harmless
against, any loss, liability or expense incurred without negligence or bad faith
on  its  part  arising  out  of  or  in  connection   with  the   acceptance  or
administration  of  this  Indenture  or the  trusts  hereunder  and  its  duties
hereunder,  including  the costs and  expenses of  defending  itself  against or
investigating  any claim or liability in the premises.  The  obligations  of the
Issuer under this Section to compensate  and indemnify the Trustee and to pay or
reimburse the Trustee for expenses,  disbursements and advances shall constitute
additional  indebtedness  hereunder  and  shall  survive  the  satisfaction  and
discharge of this  Indenture.  Such  additional  indebtedness  shall be a senior
claim to that of the Notes upon all  property and funds held or collected by the
Trustee as such,  except  funds held in trust for the  benefit of the Holders of
the Notes,  and the Notes are hereby  subordinated  to such  senior  claim.  The
Company's  payment  obligations  pursuant to this Section 6.6 shall  survive the
discharge  of this  Indenture.  When  the  Trustee  incurs  expenses  after  the
occurrence  of an Event of  Default  specified  in  Section  5.1(e) or (f),  the
expenses  are  intended  to  constitute  expenses  of  administration  under any
Bankruptcy Law.

          SECTION  6.7 Right of Trustee to Rely on Officers' Certificate, etc.
Subject to Sections 6.1 and 6.2, whenever in the administration of the trusts of
this Indenture the Trustee shall deem it necessary or desirable that a matter be
proved or  established  prior to taking or  suffering  or  omitting  any  action
hereunder,  such matter  (unless  other  evidence  in respect  thereof is herein
specifically  prescribed)  may, in the absence of negligence or bad faith on the
part of the Trustee,  be deemed to be conclusively  proved and established by an
Officers'  Certificate  delivered to the Trustee,  and such certificate,  in the
absence of  negligence  or bad faith on the part of the  Trustee,  shall be full
warrant to the Trustee for any action taken, suffered or omitted by it under the
provisions of this Indenture in reliance thereon.

         SECTION 6.8  Qualification of Trustee; Conflicting Interests.  
         (a)       If the Trustee has or shall acquire any conflicting interest,
as defined in this Section, it shall,  within  90  days  after  ascertaining 
that  it  has  such conflicting  interest,  either eliminate such conflicting
interest or resign in the manner and with the effect specified in this Article.


         (b)       In the event that the Trustee shall fail to comply with the
provisions of subsection (a) of this Section,  the Trustee shall, within 10 days
after the  expiration  of such 90 day  period,  transmit  by mail notice of such
failure to the  Noteholders in the manner and to the extent  required by Section
4.4(c).

        (c)        For the purposes of this Section, the Trustee shall be
deemed to have a conflicting interest with respect to the Notes if the Notes are
in default and:

               (i)  the Trustee is a trustee under another indenture under

                                       34


                                                        

<PAGE>



          which any other securities, or certificates of
          interest   or   participation   in  any  other
          securities, of the Issuer or the Guarantor are
          outstanding,  unless such other indenture is a
          collateral  trust  indenture  under  which the
          only  collateral  consists of the Notes issued
          under  this  Indenture;  provided  that  there
          shall be excluded  from the  operation of this
          paragraph  such other  indenture or indentures
          under which other securities,  or certificates
          of   interest   or   participation   in  other
          securities, of the Issuer or the Guarantor are
          outstanding, if

               (1) this  Indenture  and such  other
          indenture or indentures  are wholly  unsecured
          and such other  indenture  or  indentures  are
          hereafter  qualified under the Trust Indenture
          Act of 1939,  unless  the SEC shall have found
          and  declared  by order  pursuant  to  Section
          305(b)   or   Section   307(c)  of  the  Trust
          Indenture Act of 1939 that  differences  exist
          between the  provisions of this  Indenture and
          the  provisions  of such  other  indenture  or
          indentures, as applicable, which are so likely
          to involve a material  conflict of interest as
          to make it necessary in the public interest or
          for the  protection of investors to disqualify
          the  Trustee  from  acting as such  under this
          Indenture   and  such   other   indenture   or
          indentures, or

               (2) the Issuer shall have  sustained
          the burden of proving,  on  application to the
          SEC and after opportunity for hearing thereon,
          that trusteeship under this Indenture and such
          other  indenture  or  indentures,  is  not  so
          likely  to  involve  a  material  conflict  of
          interest as to make it necessary in the public
          interest or for the protection of investors to
          disqualify  the  Trustee  from  acting as such
          under this Indenture and such other  indenture
          or indentures;

          (ii)  the Trustee or any of its directors or executive officers is an
         obligor upon the Notes issued under this Indenture or an underwriter 
         for the Issuer or the Guarantor;

          (iii)  the Trustee directly or indirectly controls or is directly or
         indirectly controlled by or is under direct or indirect common control 
         with the Issuer or the Guarantor or an underwriter for the Issuer;

          (iv)  the Trustee or any of its directors or executive officers is a
         director,  officer, partner,  employee,  appointee or representative of
         the Issuer,  or of an underwriter  (other than the Trustee  itself) for
         the Issuer or the Guarantor who is currently engaged in the business of
         underwriting,  except that (x) one  individual  may be a director or an
         executive  officer,  or  both,  of the  Trustee  and a  director  or an
         executive officer, or both, of the Issuer or the Guarantor, but may not
         be at the same time an  executive  officer of both the  Trustee and the
         Issuer; (y) if and so long as the number of directors of the Trustee in
         office is more than nine, one  additional  individual may be a director
         or an executive officer,  or both, of the Trustee and a director of the
         Issuer;  and (z) the Trustee may be  designated by the Issuer or by any
         underwriter for the Issuer to act in the

                                                       
                                       35

<PAGE>



         capacity of transfer agent, registrar,  custodian, paying agent, fiscal
         agent,  escrow agent or depositary,  or in any other similar  capacity,
         or,  subject to the  provisions  of (c)(i) of this  Section,  to act as
         trustee, whether under an indenture or otherwise;

          (v)  10% or more of the voting securities of the Trustee is
         beneficially owned either by the Issuer or by any director,  partner or
         executive officer thereof,  or 20% or more of such voting securities is
         beneficially owned,  collectively,  by any two or more of such persons;
         or 10% or more of the voting  securities of the Trustee is beneficially
         owned  either by an  underwriter  for the  Issuer  or by any  director,
         partner  or  executive  officer  thereof,  or  is  beneficially  owned,
         collectively, by any two or more such persons;

          (vi)  the Trustee is the beneficial owner of, or holds as collateral
         security for an obligation  which is in default,  (x) 5% or more of the
         voting securities, or 10% or more of any other class of security of the
         Issuer,  not  including  the Notes  issued  under  this  Indenture  and
         securities  issued under any other indenture under which the Trustee is
         also  trustee,  or (y) 10% or  more  of any  class  of  security  of an
         underwriter for the Issuer;

          (vii)  the Trustee is the beneficial owner of, or holds as collateral
         security  for an  obligation  which  is in  default,  5% or more of the
         voting  securities  of any person who, to the knowledge of the Trustee,
         owns 10% or more of the voting  securities of, or controls  directly or
         indirectly  or is under direct or indirect  common  control  with,  the
         Issuer;

          (viii)  the Trustee is the beneficial owner of, or holds as collateral
         security  for an  obligation  which is in  default,  10% or more of any
         class of security of any person who, to the  knowledge  of the Trustee,
         owns 50% or more of the voting securities of the Issuer; or

          (ix)  the Trustee, on the date of default upon the Notes or
         anniversary  of such default  while such  default on the Notes  remains
         outstanding, in the capacity of executor,  administrator,  testamentary
         or inter vivos trustee, guardian,  committee or conservator,  or in any
         other  similar  capacity,  an  aggregate  of 25% or more of the  voting
         securities,  or of any class of security, of any person, the beneficial
         ownership of a specified  percentage of which would have  constituted a
         conflicting  interest  under  clause  (vi),  (vii)  or  (viii)  of this
         subsection.  As to any such  securities  of which the Trustee  acquired
         ownership  through  becoming  executor,  administrator  or testamentary
         trustee  of an  estate  which  included  them,  the  provisions  of the
         preceding  sentence shall not apply, for a period of two years from the
         date of such acquisition,  to the extent that such securities  included
         in such  estate do not exceed 25% of such voting  securities  or 25% of
         any such  class  of  security.  Promptly  after  the  dates of any such
         default  upon the Notes and annually in each  succeeding  year that the
         Notes remain in default, the Trustee shall make a check of its holdings
         of such securities in any of the above-mentioned  capacities as of such
         dates.  If the Issuer  fails to make payment in full of principal of or
         interest  on any of the  Notes  when  and as the same  becomes  due and
         payable, and such failure continues for 30 days thereafter, the Trustee
         shall make a prompt check of its holdings of such  securities in any of
         the above-mentioned capacities

                                                      
                                       36

<PAGE>



         as of the date of the expiration of such 30-day period,  and after such
         date,  notwithstanding the foregoing provisions of this paragraph,  all
         such securities so held by the Trustee, with sole or joint control over
         such securities  vested in it, shall,  but only so long as such failure
         shall  continue,  be  considered  as though  beneficially  owned by the
         Trustee  for the  purposes  of clauses  (vi),  (vii) and (viii) of this
         subsection.

          The specification of percentages in clauses (v) to (ix), inclusive, of
this subsection  shall not be construed as indicating that the ownership of such
percentages  of the  securities of a person is or is not necessary or sufficient
to  constitute  direct or indirect  control for the  purposes of clause (iii) or
(vii) of this subsection.

          For the purposes of clauses (vi), (vii), (viii) and (ix) of this
subsection only,

          (i)  the terms "security" and "securities" shall include only such
         securities as are generally  known as corporate  securities,  but shall
         not  include  any note or other  evidence  of  indebtedness  issued  to
         evidence an  obligation to repay moneys lent to a person by one or more
         banks, trust companies or banking firms, or any certificate of interest
         or participation in any such note or evidence of indebtedness;

          (ii) an  obligation  shall be deemed to be "in default" when a default
         in payment of principal or interest shall have continued for 30 days or
         more and shall not have been cured; and

          (iii)  the  Trustee  shall not be deemed to be the owner or holder of 
         (x) any security  which it holds as  collateral security, as trustee or
         otherwise,  for an  obligation  which is not in  default  as defined in
         clause (ii) above,  or (y) any  security  which it holds as  collateral
         security under this Indenture,  irrespective of any default  hereunder,
         or (z) any  security  which it holds as  agent  for  collection,  or as
         custodian, escrow agent or depositary, or in any similar representative
         capacity.

          Except as provided above, the word "security" or "securities," as
used in this  Section,  shall  mean  any  note,  stock,  treasury  stock,  bond,
debenture, evidence of indebtedness, certificate of interest or participation in
any  profit-sharing  agreement,  collateral trust  certificate,  preorganization
certificate or subscription,  transferable share,  investment  contract,  voting
trust certificate,  certificate of deposit for a security,  fractional undivided
interest in oil,  gas or other  mineral  rights or, in general,  any interest or
instrument  commonly  known as a "security,"  or any  certificate of interest or
participation in, temporary or interim  certificate for, receipt for,  guarantee
of, or warrant or right to subscribe to or purchase, any of the foregoing.

          (d)       For purposes of this Section:

          (i) the term "underwriter," when used with reference to the Issuer,
         shall mean every person who, within three years prior to the time as of
         which the  determination  is made, has purchased from the Issuer with a
         view to, or has offered or sold for the Issuer in connection  with, the
         distribution of any security of the Issuer outstanding at such time, or
         has  participated or has had a direct or indirect  participation in any
         such undertaking, or has participated or has had a participation in the
         direct or indirect underwriting of any such undertaking, but such term

                                                     
                                       37

<PAGE>



         shall not include a person whose  interest  was limited to a commission
         from an underwriter  or  dealer  not in  excess  of  the  usual  and  
         customary distributors' or sellers' commission;

          (ii)  the  term  "director"   shall  mean  any director of a 
         corporation or any individual performing similar functions with respect
         to any organization, whether incorporated or unincorporated;

          (iii)  the  term "person" shall mean  an individual, a corporation, a
         partnership,  an  association,  a  joint-stock  company,  a  trust,  an
         unincorporated  organization  or a government or political  subdivision
         thereof;  as used in this clause, the term "trust" shall include only a
         trust  where  the  interest  or  interests   of  the   beneficiary   or
         beneficiaries are evidenced by a security;

          (iv) the term "voting security" shall mean any security presently
         entitling  the  owner or holder  thereof  to vote in the  direction  or
         management of the affairs of a person,  or any security issued under or
         pursuant to any trust,  agreement or  arrangement  whereby a trustee or
         trustees  or agent or agents  for the owner or holder of such  security
         are  presently  entitled to vote in the  direction or management of the
         affairs of a person;

          (v) the term  "Issuer"  shall mean any obligor upon the Notes; and

          (vi) the term "executive officer" shall mean the president, every vice
         president,  every trust  officer,  the cashier,  the  secretary and the
         treasurer of a corporation,  and any individual  customarily performing
         similar   functions   with   respect  to  any   organization,   whether
         incorporated or  unincorporated,  but shall not include the chairman of
         the board of directors.

          (e)       The percentages of voting securities and other securities
specified in this Section shall be calculated in accordance with the following 
provisions:

         (i) a specified percentage of the voting securities of the Trustee, the
         Issuer or any other person referred to in this Section (each of whom is
         referred to as a "person" in this subsection)  means such amount of the
         outstanding  voting securities of such person as entitles the holder or
         holders  thereof to cast such  specified  percentage  of the  aggregate
         votes which the holders of all the  outstanding  voting  securities  of
         such person are entitled to cast in the  direction or management of the
         affairs of such person;

          (ii) a  specified  percentage  of a  class  of securities of a person
         means such percentage of the aggregate amount of securities of the 
         class outstanding;

          (iii) the term  "amount,"  when used in regard to securities, means
         the  principal  amount if relating to  evidences of  indebtedness,  the
         number of shares if relating to capital  shares and the number of units
         if relating to any other kind of security;

          (iv) the term  "outstanding"  means issued and not held by or for the
         account of the issuer; the following securities shall not be deemed
         outstanding within the meaning of this definition:

                                            
                                       38

<PAGE>



         
               (A)  securities of an issuer held in
         a sinking fund  relating to  securities of the
         issuer of the same class;

               (B)  securities of an issuer held in
         a sinking  fund  relating to another  class of
         securities  of the issuer,  if the  obligation
         evidenced by such other class of securities is
         not in default as to  principal or interest or
         otherwise;

               (C) securities pledged by the issuer
         thereof as security for an  obligation  of the
         issuer  not  in  default  as to  principal  or
         interest or otherwise; and

               (D) securities held in escrow if placed in escrow by the
         issuer thereof; 

         provided  that any  voting  securities  of an  issuer shall be deemed  
         outstanding  if  any  person  other  than  the  issuer  is  entitled to
         exercise the voting rights thereof; and

          (v) a  security  shall be  deemed to be of the same class as another
         security if both  securities  confer upon the holder or holders thereof
         substantially  the same rights and  privileges;  provided  that, in the
         case of  secured  evidences  of  indebtedness,  all of which are issued
         under a single indenture, differences in the interest rates or maturity
         dates of  various  series  thereof  shall not be deemed  sufficient  to
         constitute such series different classes and provided,  further,  that,
         in the case of unsecured evidences of indebtedness,  differences in the
         interest rates or maturity dates thereof shall not be deemed sufficient
         to constitute them securities of different classes, whether or not they
         are issued under a single indenture.

          SECTION 6.9  Persons Eligible for Appointment as Trustee.  There
shall at all times be a Trustee hereunder which shall be a corporation organized
and doing  business  under the laws of the  United  States of  America or of any
State thereof or the District of Columbia having a combined  capital and surplus
of at least  $50,000,000,  and which is  authorized  under such laws to exercise
corporate  trust powers and is subject to supervision or examination by Federal,
State or District of Columbia authority.  If such corporation  publishes reports
of condition at least  annually,  pursuant to law or to the  requirements of the
aforesaid  supervising  or examining  authority,  then, for the purposes of this
Section, the combined capital and surplus of such corporation shall be deemed to
be its  combined  capital and surplus as set forth in its most recent  report of
condition  so  published.  In case at any time  the  Trustee  shall  cease to be
eligible in accordance  with the  provisions of this Section,  the Trustee shall
resign immediately in the manner and with the effect specified in Section 6.10.

          SECTION 6.10  Resignation and Removal; Appointment of Successor 
Trustee.  (a) The  Trustee,  or any  trustee  or  trustees  hereafter appointed,
may at any time resign by giving written notice of resignation to the
Issuer  and by mailing  notice of such  resignation  to the  Holders of the then
Outstanding Notes at their addresses as they shall appear on the register of the
Registrar. Upon receiving such notice of resignation, the Issuer shall

                                                      
                                       39

<PAGE>



promptly appoint a successor  trustee or trustees with respect to the applicable
series by written instrument,  in duplicate,  executed by authority of the Board
of Directors,  one copy of which  instrument shall be delivered to the resigning
Trustee  and one copy to the  successor  trustee or  trustees.  If no  successor
trustee shall have been so appointed and shall have accepted  appointment within
30 days after the mailing of such notice of resignation,  the resigning  trustee
may  petition  any court of  competent  jurisdiction  for the  appointment  of a
successor  trustee,  or any Holder who has been a bona fide Holder of a Note for
at least six months may, subject to the provisions of Section 5.12, on behalf of
such Holder and all others similarly  situated,  petition any such court for the
appointment of a successor trustee. Such court may thereupon, after such notice,
if any, as it may deem proper, appoint a successor trustee.

          (b)       In case at any time any of the following shall occur:

          (i)  the Trustee shall fail to comply with the provisions of Section 
         6.8 after written request therefor by the Issuer or by any Holder who 
         has been a bona fide Holder of a Note for at least six months; or

          (ii) the Trustee shall cease to be eligible in accordance with the
         provisions of Section 6.9 and shall fail to resign after written 
         request therefor by the Issuer or by any such Holder; or

          (iii) the Trustee  shall  become  incapable of acting or shall be
         adjudged a bankrupt or  insolvent,  or a receiver or  liquidator of the
         Trustee or of its property  shall be appointed,  or any public  officer
         shall  take  charge or control of the  Trustee  or of its  property  or
         affairs for the purpose of rehabilitation, conservation or liquidation;
         or

          (iv) the  Issuer shall elect to  remove  the Trustee, provided that no
         Event of  Default,  or event which  following  notice or the passage of
         time or both would  constitute  an Event of  Default,  shall then exist
         with respect to the Notes and such removal  does not  adversely  affect
         the interests of any Holder of the Notes;

then,  in any such  case,  the  Issuer may  remove  the  Trustee  and  appoint a
successor trustee by written instrument, in duplicate,  executed by order of the
Board of  Directors,  one copy of which  instrument  shall be  delivered  to the
Trustee so  removed  and one copy to the  successor  trustee  or  trustees,  or,
subject to the  provisions of Section 5.12,  any Holder who has been a bona fide
Holder of a Note for at least six months  may,  on behalf of such Holder and all
others similarly situated,  petition any court of competent jurisdiction for the
removal of the Trustee and the  appointment of a successor  trustee.  Such court
may  thereupon,  after such notice,  if any, as it may deem  proper,  remove the
Trustee and appoint a successor trustee.

          (c)       Any resignation or removal of the Trustee and any
appointment  of a successor  trustee  pursuant to any of the  provisions of this
Section shall become  effective upon  acceptance of appointment by the successor
trustee as provided in Section 6.11.

          SECTION  6.11  Acceptance  of  Appointment  by Successor Trustee.
Any successor trustee appointed as provided in Section 6.10 shall execute, 
acknowledge and

                                                     
                                       40

<PAGE>



deliver to the Issuer and to its  predecessor  trustee an  instrument  accepting
such  appointment  hereunder,  and thereupon the  resignation  or removal of the
predecessor  trustee shall become effective and such successor trustee,  without
any  further  act,  deed or  conveyance,  shall  become  vested with all rights,
powers, trusts and duties of its predecessor  hereunder,  with like effect as if
originally named as trustee hereunder; but, nevertheless, on the written request
of the Issuer or of the  successor  trustee,  upon  payment of its charges  then
unpaid,  the trustee ceasing to act shall,  subject to Section 10.4, pay over to
the  successor  trustee  all  moneys  at the time held by it  hereunder  for the
benefit of such applicable series and shall execute,  acknowledge and deliver an
instrument  transferring  to such  successor  trustee all such  rights,  powers,
trusts and duties. Upon request of any such successor trustee,  the Issuer shall
execute and  acknowledge  any and all  instruments in writing for more fully and
certainly  vesting in and confirming to such successor  trustee all such rights,
powers and trusts.  Any  trustee  ceasing to act shall,  nevertheless,  retain a
prior claim upon all property or funds held or collected by such trustee for the
benefit  of the  Notes  to  secure  any  amounts  then  due it  pursuant  to the
provisions of Section 6.6.

          No successor trustee shall accept appointment as provided in this
Section unless at the time of such  acceptance  such successor  trustee shall be
qualified  under the provisions of Section 6.8 and eligible under the provisions
of Section 6.9.

          Upon acceptance of appointment by any successor trustee as
provided in this Section, the Issuer shall give notice thereof to the Holders of
the Notes by mailing  such  notice to such  Holders at their  addresses  as they
shall appear on the register of the Registrar.  If the acceptance of appointment
is substantially  contemporaneous  with the resignation,  then the notice called
for by the  preceding  sentence  may be combined  with the notice  called for by
Section  6.10.  If the  Issuer  fails to give such  notice  within 10 days after
acceptance of appointment by the successor trustee,  the successor trustee shall
cause such notice to be given at the expense of the Issuer.

          SECTION 6.12  Merger, Conversion, Consolidation or Succession
to Business of Trustee.  Any corporation into which the Trustee may be merged or
converted or with which it may be  consolidated,  or any  corporation  resulting
from any merger,  conversion  or  consolidation  to which the Trustee shall be a
party,  or any  corporation  succeeding to the corporate  trust  business of the
Trustee,  shall be the  successor of the Trustee  hereunder,  provided that such
corporation  shall be qualified under the provisions of Section 6.8 and eligible
under the provisions of Section 6.9,  without the execution or filing of a paper
or any further act on the part of any of the parties hereto,  anything herein to
the contrary notwithstanding.

         In case at the time of such  succession to the Trustee any of the Notes
shall have been authenticated but not delivered,  any such successor trustee may
adopt the certificate of authentication  of any predecessor  trustee and deliver
the Notes so authenticated; and, in case at that time any of the Notes shall not
have been  authenticated,  any  successor  trustee may  authenticate  such Notes
either in the name of any predecessor hereunder or in the name of such successor
trustee; and in all such cases such certificate of authentication shall have the
full force which it is anywhere in the Notes or in this Indenture  provided that
the certificate of authentication  of the Trustee shall have;  provided that the
right to adopt the  certification of any predecessor  trustee or to authenticate
the  Notes  in the  name of any  predecessor  trustee  shall  apply  only to its
successor or successors by merger, conversion or consolidation.


                                                     
                                       41

<PAGE>



          SECTION 6.13 Preferential Collection of Claims Against the Issuer.
(a) Subject to the provisions of this Section,  if the Trustee shall be or shall
become a creditor,  directly or indirectly,  secured or unsecured, of the Issuer
within  three months prior to a default,  as defined in  subsection  (c) of this
Section,  or subsequent to such a default,  then,  unless and until such default
shall be cured,  the Trustee  shall set apart and hold in a special  account for
the  benefit  of the  Trustee  individually,  the  Holders  of the Notes and the
holders of other indenture securities (as defined in such subsection (c)):

          (1)       an amount equal to any and all reductions in the amount
         due and owing upon any claim as such  creditor in respect of  principal
         or interest,  effected after the beginning of such three months' period
         and valid as against  the Issuer  and its other  creditors,  except any
         such  reduction  resulting  from  the  receipt  or  disposition  of any
         property  described  in  clause  (2) of this  subsection,  or from  the
         exercise of any right of set-off which the Trustee could have exercised
         if a petition  in  bankruptcy  had been filed by or against  the Issuer
         upon the date of such default; and

          (2)       all property received by the Trustee in respect of any claim
         as such creditor,  either as security  therefor,  or in satisfaction or
         composition  thereof,  or otherwise,  after the beginning of such three
         months' period, or an amount equal to the proceeds of any such property
         if disposed of, subject,  however, to the rights, if any, of the Issuer
         and its other creditors in such property or such proceeds.

          Nothing herein contained, however, shall affect the right of the
Trustee:

          (A)       to retain for its own account (i) payments made on account
         of any such claim by any person  (other  than the Issuer) who is liable
         thereon,  (ii) the  proceeds of the bona fide sale of any such claim by
         the Trustee to a third person,  and (iii)  distributions  made in cash,
         securities  or other  property in respect of claims  filed  against the
         Issuer  in   bankruptcy  or   receivership   or  in   proceedings   for
         reorganization  pursuant  to  Title  11 of the  United  States  Code or
         applicable state law;

          (B)      to realize, for its own account, upon any property held by it
         as security for any such claim, if such property was so held prior to 
         the beginning of such three months' period;

          (C)     to realize, for its own account, but only to the extent of the
         claim hereinafter  mentioned,  upon any property held by it as security
         for any such claim,  if such claim was created  after the  beginning of
         such four  months'  period and such  property  was received as security
         therefor  simultaneously with the creation thereof,  and if the Trustee
         shall  sustain the burden of proving that at the time such property was
         so  received  the  Trustee had no  reasonable  cause to believe  that a
         default as defined in subsection (c) of this Section would occur within
         three months; or

          (D)       to receive payment on any claim referred to in clause (B) or
         (C) of this  subsection,  against the release of any  property  held as
         security  for such claim as  provided in such clause (B) or (C), as the
         case may be, to the extent of the fair value of such property,

                                                       
                                       42

<PAGE>



          For the purposes of clauses (B), (C) and (D), property substituted
after the  beginning of three months period for property held as security at the
time of such substitution  shall to the extent of the fair value of the property
released, have the same status as the property released, and, to the extent that
any claim  referred  to in any of such  clauses  is  created in renewal of or in
substitution  for or for the purpose of repaying or refunding  any  pre-existing
claim of the Trustee as such creditor,  such claim shall have the same status as
such preexisting claim.

          If the Trustee shall be required to account, the fund and property
held in such special account and the proceeds thereof shall be apportioned among
the Trustee,  the Holders and the holders of other indenture  securities in such
manner  that the  Trustee,  the  Holders  and the  holders  of  other  indenture
securities  realize,  as a result of  payments  from such  special  account  and
payments  of  dividends  on claims  filed  against the Issuer in  bankruptcy  or
receivership  or in proceedings for  reorganization  pursuant to Title 11 of the
United  States  Code or  applicable  State  law,  the same  percentage  of their
respective claims, figured before crediting to the claim of the Trustee anything
on account of the  receipt  by it from the Issuer of the funds and  property  in
such  special  account  and before  crediting  to the  respective  claims of the
Trustee,  the Holders and the holders of other indenture securities dividends on
claims filed against the Issuer in bankruptcy or  receivership or in proceedings
for reorganization  pursuant to Title 11 of the United States Code or applicable
State law, but after crediting  thereon  receipts on account of the indebtedness
represented  by their  respective  claims from all sources  other than from such
dividends  and from the funds and property so held in such special  account.  As
used in this paragraph  with respect to any claim,  the term  "dividends"  shall
include  any  distribution   with  respect  to  such  claim,  in  bankruptcy  or
receivership  or in proceedings for  reorganization  pursuant to Title 11 of the
United States Code or applicable State law, whether such distribution is made in
cash, securities or other property,  but shall not include any such distribution
with respect to the secured  portion,  if any, of such claim. The court in which
such bankruptcy,  receivership or proceeding for reorganization is pending shall
have  jurisdiction  (i) to  apportion  among the  Trustee,  the  Holders and the
holders of other indenture securities, in accordance with the provisions of this
paragraph,  the funds and property held in such special account and the proceeds
thereof, or (ii) in lieu of such apportionment,  in whole or in part, to give to
the provisions of this paragraph due  consideration  in determining the fairness
of the  distributions to be made to the Trustee,  the Holders and the holders of
other indenture  securities with respect to their  respective  claims,  in which
event it shall not be  necessary  to  liquidate  or to appraise the value of any
securities or other property held in such special account or as security for any
such claim, or to make a specific  allocation of such  distributions  as between
the secured and  unsecured  portions of such  claims,  or otherwise to apply the
provisions of this paragraph as a mathematical formula.

          Any Trustee who has resigned or been removed after the beginning
of  such  three-months'  period  shall  be  subject  to the  provisions  of this
subsection  as though  such  resignation  or removal  had not  occurred.  If any
Trustee has resigned or been removed prior to the beginning of such four-months'
period,  it shall be subject to the provisions of this subsection if and only if
the following conditions exist:

          (i)       the receipt of property or reduction of claim which would
         have given rise to the  obligation  to  account,  if such  Trustee  had
         continued   as  trustee,   occurred   after  the   beginning   of  such
         three-months' period; and

                                                     
                                       43

<PAGE>



          (ii)      such receipt of property or reduction of claim occurred
         within three months after such resignation or removal.

          (b) There shall be excluded from the operation of this Section a
creditor relationship arising from:

          (1)       ownership or acquisition of securities issued under any
         indenture or any security or securities having a maturity of one year 
         or more at the time of acquisition by the Trustee;

          (2)       advances authorized by a receivership or bankruptcy court
         of  competent  jurisdiction  or by this  Indenture  for the  purpose of
         preserving  any property which shall at any time be subject to the lien
         of this Indenture or of  discharging  tax liens or other prior liens or
         encumbrances   thereon,   if  notice  of  such   advance   and  of  the
         circumstances   surrounding   the  making   thereof  is  given  to  the
         Noteholders at the time and in the manner provided in this Indenture;

          (3)       disbursements made in the ordinary course of business in
         the capacity of trustee under an indenture,  transfer agent, registrar,
         custodian,  paying agent, fiscal agent or depositary,  or other similar
         capacity;

          (4)       an indebtedness created as a result of services rendered
         or premises rented or an  indebtedness  created as a result of goods or
         securities sold in a cash  transaction as defined in subsection  (c)(3)
         of this Section;

          (5)       the ownership of stock or of other securities of a
         corporation  organized  under the  provisions  of Section  25(a) of the
         Federal  Reserve  Act, as amended,  which is directly or  indirectly  a
         creditor of the Issuer; or

          (6)       the acquisition, ownership, acceptance or negotiation of
         any drafts,  bills of exchange,  acceptances or obligations  which fall
         within  the  classification  of  self-liquidating  paper as  defined in
         subsection (c)(4) of this Section.

          (c)       As used in this Section:

          (1)       the term "default" shall mean any failure to make payment
         in full of the  principal or interest in respect of the Notes when such
         payment  becomes due and payable or  principal  and  interest  upon the
         other  indenture  securities  when and as such  principal  or  interest
         becomes due and payable;

          (2)       the term "other indenture securities" shall mean securities
         upon which the Issuer is an obligor (as defined in the Trust  Indenture
         Act of 1939)  outstanding under any other indenture (i) under which the
         Trustee is also trustee,  (ii) which contains provisions  substantially
         similar to the  provisions of subsection  (a) of this Section and (iii)
         under which a default  exists at the time of the  apportionment  of the
         funds and property held in said special account;

          (3)       the term "cash transaction" shall mean any transaction in

                                                       
                                       44

<PAGE>



         which full  payment for goods or  securities  sold is made within seven
         days after delivery of the goods or securities in currency or in checks
         or other orders drawn upon banks or bankers and payable upon demand;

          (4)       the term "self-liquidating paper" shall mean any draft, bill
         of exchange,  acceptance or obligation which is made, drawn, negotiated
         or incurred  by the Issuer  for the  purpose of  financing  the  
         purchase, processing,  manufacture,  shipment, storage or sale of 
         goods, wares or merchandise  and which is secured  by  documents  
         evidencing  title to, possession of, or a lien upon,  the goods, wares 
         or merchandise or the receivables  or proceeds  arising from the sale 
         of the goods,  wares or merchandise previously constituting the 
         security, provided the security is  received  by the Trustee  
         simultaneously  with the  creation of the creditor relationship with 
         the Issuer arising from the making, drawing, negotiating or incurring 
         of the draft, bill of exchange,  acceptance or obligation; and

          (5)      the term "Issuer" shall mean any obligor upon the Notes.

          SECTION 6.14  Appointment of Authenticating Agent.  As long as
any Note  remains  Outstanding,  the Trustee may, by an  instrument  in writing,
appoint  with  the  approval  of  the  Issuer  an   authenticating   agent  (the
"Authenticating  Agent")  which  shall be  authorized  to act on behalf  of, but
subject to the direction of, the Trustee to  authenticate  Notes including Notes
issued upon exchange,  registration of transfer,  partial redemption or pursuant
to Section 2.6. Notes so authenticated shall be entitled to the benefits of this
Indenture and shall be valid and obligatory for all purposes as if authenticated
by  the  Trustee.   Whenever   reference  is  made  in  the   Indenture  to  the
authentication  and  delivery  of  Notes  by the  Trustee  or to  the  Trustee's
certificate  of  authentication,  such  reference  shall be  deemed  to  include
authentication and delivery on behalf of the Trustee by an Authenticating  Agent
for such series and a certificate  of  authentication  executed on behalf of the
Trustee by such  Authenticating  Agent. Such  Authenticating  Agent shall at all
times be a corporation organized and doing business under the laws of the United
States of  America  or of any  State  thereof  or of the  District  of  Columbia
authorized under such laws to exercise corporate trust powers, having a combined
capital and surplus of at least  $5,000,000  (determined  as provided in Section
6.9 with respect to the Trustee) and subject to  supervision  or  examination by
Federal or State authority.

          Any corporation into which any Authenticating Agent may be
merged or converted  or with which it may be  consolidated,  or any  corporation
resulting   from  any  merger,   conversion  or   consolidation   to  which  any
Authenticating  Agent  shall  be a part  or any  corporation  succeeding  to the
corporate agency or corporate trust business of any Authenticating  Agent, shall
be the successor to such Authenticating  Agent with respect to the Notes without
the  execution  or  filing of any  paper or any  further  act on the part of the
Trustee or such Authenticating Agent.

          Any Authenticating Agent may at any time, and if it shall cease to be
eligible hereunder shall,  resign by giving written notice of resignation to the
Trustee and to the Issuer.  The Trustee may at any time  terminate the agency of
any Authenticating Agent by giving written notice thereof to such Authenticating
Agent and the Issuer. Upon receiving such a notice of resignation or upon such a
termination,  or in case at any time any Authenticating  Agent shall cease to be
eligible in accordance  with the  provisions of this Section,  the Trustee shall
upon

                                                     
                                       45

<PAGE>



receipt of an Issuer Order  appoint a successor  Authenticating  Agent and shall
provide notice of such appointment to all the Holders of the Notes in the manner
and to the extent  provided in Section 6.11 with respect to the appointment of a
successor  trustee.  Any successor  Authenticating  Agent upon acceptance of its
appointment  hereunder shall become vested with all rights, powers and duties of
its  predecessor  hereunder,  with  like  effect  as if  originally  named as an
Authenticating Agent.

          Sections 6.2, 6.3, 6.4, 6.6 (except for the last sentence thereof) and
7.3 shall be applicable to any Authenticating Agent.


                                  ARTICLE SEVEN

                           CONCERNING THE NOTEHOLDERS
                           --------------------------

          SECTION 7.1  Evidence of Action Taken by Noteholders.  Any
request,  demand,  authorization,  direction,  notice,  consent, waiver or other
action provided by this Indenture to be given or taken by a specified percentage
in  aggregate  Principal  Amount at  Maturity of the Holders of the Notes may be
evidenced by one or more  instruments of  substantially  similar tenor signed by
such  specified  percentage  of  Holders  in  person  or by agent or proxy  duly
appointed in writing;  and, except as herein otherwise expressly provided,  such
action shall become  effective when such instrument or instruments are delivered
to the Trustee.

          SECTION 7.2  Proof of Execution of Instruments and of Holding of
Notes. Subject to Sections 6.1 and 6.2, proof of the execution of any instrument
by a Holder or his agent or proxy shall be sufficient if made in accordance with
such reasonable  rules and regulations as may be prescribed by the Trustee or in
such manner as shall be satisfactory to the Trustee. Subject to Sections 6.1 and
6.2,  proof of the holding by any Person of any Note shall be  sufficient if the
ownership of the Notes is proved by the  register  maintained  by the  Registrar
pursuant to Section 2.3 or by a certificate of the Registrar.

          SECTION 7.3  Holders to be Treated as Owners.  The Issuer, the
Guarantor, the Trustee and any agent of the Issuer, the Guarantor or the Trustee
may deem and treat the Person in whose name any Note  shall be  registered  upon
the register maintained by the Registrar pursuant to Section 2.3 as the absolute
owner  of  such  Note   (whether   or  not  such  Note  shall  be  overdue   and
notwithstanding  any  notation of ownership  or other  writing  thereon) for the
purpose  of  receiving  payments  of or on account of the Note and for all other
purposes;  and none of the Issuer,  the Guarantor,  the Trustee and any agent of
the Issuer,  the Guarantor or the Trustee shall be affected by any notice to the
contrary. All such payments so made to any such Person, or upon his order, shall
be valid,  and, to the extent of the sum or sums so paid,  effectual  to satisfy
and discharge the liability for moneys payable upon any such Note.

          SECTION 7.4  Notes Owned by Issuer Deemed Not Outstanding.
In determining  whether the Holders of the requisite  aggregate Principal Amount
at Maturity of Outstanding  Notes have  concurred in any  direction,  consent or
waiver under this Indenture,  Notes which are owned by the Issuer, the Guarantor
or by any Person  directly or indirectly  controlling  or controlled by or under
direct or indirect  common  control  with the Issuer or the  Guarantor  shall be
disregarded and deemed not to be Outstanding for the purposes of any such

                                                      
                                       46

<PAGE>



determination,  except that for the purpose of  determining  whether the Trustee
shall be protected relying on any such direction,  consent or waiver, only Notes
which the  Trustee  knows are so owned shall be so  disregarded.  Notes so owned
which have been  pledged in good faith may be  regarded  as  Outstanding  if the
pledgee establishes to the satisfaction of the Trustee the pledgee's right so to
act with  respect  to such  Notes and that the  pledgee is not the Issuer or the
Guarantor  upon such Notes or any Person  directly or indirectly  controlling or
controlled by or under direct or indirect  common control with the Issuer or the
Guarantor. In case of a dispute as to such right, the advice of counsel shall be
full  protection  in respect of any decision  made by the Trustee in  accordance
with such advice.  Upon request of the Trustee,  the Issuer shall furnish to the
Trustee promptly an Officers'  Certificate listing and identifying all Notes, if
any, known by the Issuer to be owned or held by or for the account of any of the
above described Persons; and, subject to Sections 6.1 and 6.2, the Trustee shall
be entitled to accept such Officers'  Certificate as conclusive  evidence of the
facts  therein  set forth and of the fact that all Notes not listed  therein are
Outstanding for the purposes of any such determination.

          SECTION 7.5  Right of Revocation of Action Taken.  At any time
prior to (but not after) the  evidencing to the Trustee,  as provided in Section
7.1, of the taking of any action by the Holders of the  requisite  percentage in
aggregate  Principal Amount at Maturity of the Notes specified in this Indenture
in connection with such action,  any Holder of a Note the serial number of which
is shown by the  evidence to be included  among the serial  numbers of the Notes
the Holders of which have consented to such action may, by filing written notice
at the Corporate Trust Office and upon proof of ownership as provided in Section
7.2, revoke such action so far as concerns such Note.  Except as aforesaid,  any
such action taken by the Holder of a Note shall be  conclusive  and binding upon
such Holder and upon all future Holders and owners of such Note and of any Notes
issued in  exchange or  substitution  therefor  or on  registration  of transfer
thereof,  irrespective  of whether or not any notation in regard thereto is made
upon any such Note. Any action taken by the Holders of the requisite  percentage
in  aggregate  Principal  Amount  at  Maturity  of the Notes  specified  in this
Indenture in connection with such action shall be conclusively  binding upon the
Issuer, the Guarantor, the Trustee and the Holders of all the Notes.

          The Issuer may, but shall not be obligated to, fix a record date for
the purpose of  determining  the  Noteholders  entitled to give their consent or
take  any  other  action  described  above.  If a  record  date is  fixed,  then
notwithstanding  the  immediately  preceding  paragraph  those  Persons who were
Holders of Notes at such record  date (or their duly  designated  proxies),  and
only those  Persons,  shall be  entitled  to give such  consent or to revoke any
consent  previously given or to take any such action with respect to such Notes,
whether or not such Persons  continue to be Holders  after such record date.  No
such  consent  shall be valid or  effective  for more than 120 days  after  such
record date.


                                  ARTICLE EIGHT

                             SUPPLEMENTAL INDENTURES
                             -----------------------

          SECTION 8.1  Supplemental Indentures Without Consent of
Noteholders.  The Issuer and the Guarantor, when authorized by a resolution of 
their respective Boards of Directors (which resolution may provide general terms
or parameters for such action

                                                      
                                       47

<PAGE>



and may provide  that the  specific  terms of such action may be  determined  in
accordance with or pursuant to an Issuer Order),  and the Trustee may, from time
to time and at any time,  enter into an  indenture  or  indentures  supplemental
hereto for one or more of the following purposes:

          (a)       subject to Section 3.6, to convey, transfer, assign,
         mortgage or pledge to the Trustee as security for the Notes any 
         property or assets;

          (b)       to add guarantees with respect to the Notes;

          (c)       to evidence the succession of another corporation to the
         Issuer or the Guarantor, or successive successions,  and the assumption
         by  the  successor   corporation  of  the  covenants,   agreements  and
         obligations of the Issuer or the Guarantor,  as applicable  pursuant to
         Article Nine;

          (d)       to add to the covenants of the Issuer or the Guarantor such
         further  covenants,  restrictions,  conditions  or  provisions  as  the
         Issuer,  the  Guarantor  and the Trustee  shall  consider to be for the
         protection of the Holders of the Notes, and to make the occurrence,  or
         the occurrence and continuance, of a default in complying with any such
         additional  covenant,  restriction,  condition or provision an Event of
         Default  permitting  the  enforcement  of all  or  any  of the  several
         remedies  provided in this Indenture as herein set forth; in respect of
         any such additional covenant, restriction, condition or provision, such
         supplemental  indenture  may provide for a  particular  period of grace
         after default  (which period may be shorter or longer than that allowed
         in the  case  of  other  defaults)  or  may  provide  for an  immediate
         enforcement  upon such an Event of  Default  or may limit the  remedies
         available to the Trustee upon such an Event of Default or may limit the
         right of the Holders of a majority  in  aggregate  Principal  Amount at
         Maturity of the Notes to waive such an Event of Default;

          (e)       to cure any ambiguity, defect, omission or inconsistency or
         to correct  or  supplement  any  provision  contained  herein or in any
         supplemental  indenture which may be defective or inconsistent with any
         other provision contained herein or in any supplemental  indenture,  or
         to make such other  provisions  as the Issuer or the Guarantor may deem
         necessary or desirable,  provided  that no such action shall  adversely
         affect the interests of the Holders of the Notes;

          (f)       to evidence and provide for the acceptance of appointment
         hereunder by a successor trustee, as provided in Section 6.11; and

          (g)       to provide for uncertificated Notes in addition to or in 
         place of certificated Notes; provided, however, that the uncertificated
         Notes are issued in  registered  form for  purposes of Section  163(f) 
         of the Internal Revenue Code of 1986, as amended, or in a manner such 
         that the uncertificated  Notes are  described  in  Section  
         163(f)(2)(B) of the Internal Revenue Code of 1986, as amended.

          The Trustee is hereby authorized to join with the Issuer and the
Guarantor  in the  execution  of any such  supplemental  indenture,  to make any
further  appropriate  agreements and stipulations which may be therein contained
and to accept the conveyance,  transfer,  assignment,  mortgage or pledge of any
property or assets thereunder, but the Trustee

                                                      
                                       48

<PAGE>



shall not be  obligated  to enter  into any such  supplemental  indenture  which
affects the Trustee's own rights,  duties or immunities  under this Indenture or
otherwise.

          Any supplemental indenture authorized by the provisions of this
Section may be  executed  without the consent of the Holders of the Notes at the
time Outstanding, notwithstanding any of the provisions of Section 8.2.

          SECTION 8.2  Supplemental Indentures With Consent of the
Noteholders.  With the consent  (evidenced as provided in Article  Seven) of the
Holders of not less than a majority in aggregate Principal Amount at Maturity of
the Outstanding  Notes affected by such supplemental  indenture,  the Issuer and
the Guarantor,  when  authorized by a resolution of their  respective  Boards of
Directors  (which  resolution  may provide  general terms or parameters for such
action and may provide that the specific  terms of such action may be determined
in accordance  with or pursuant to an Issuer  Order),  and the Trustee may, from
time to time and at any time, enter into an indenture or indentures supplemental
hereto for the purpose of adding any  provisions to or changing in any manner or
eliminating  any of the  provisions  of this  Indenture  or of any  supplemental
indenture  or of  modifying  in manner the  rights of the  Holders of the Notes;
provided that no such supplemental  indenture shall, without the consent of each
Holder affected thereby (a) reduce the Principal  Amount at Maturity,  the Issue
Price or the Redemption  Price with respect to any Note, the amount thereof that
would be due and  payable  upon an  acceleration  of the  maturity  of the Notes
pursuant to Section 5.1, or the amount thereof  provable in bankruptcy  pursuant
to Section 5.2, or extend the maturity of any Note,  or alter the manner or rate
of accrual of  Original  Issue  Discount,  or make any Note  payable in money or
securities  other than that  stated in the Note;  (b) reduce the  percentage  in
Principal Amount at Maturity of the Outstanding Notes whose Holders must consent
to any such supplemental indenture or any waiver provided for in this Indenture;
or (c) impair the right to  institute  suit for the  enforcement  of any payment
with respect to the Notes.

          Upon the request of the Issuer and the Guarantor, accompanied by
a Board Resolution from each of the Issuer and the Guarantor  complying with the
first  paragraph  of this  Section and evidence of the consent of the Holders of
the Notes as aforesaid and such other  documents,  if any, as may be required by
Section  7.1,  the Trustee  shall join with the Issuer and the  Guarantor in the
execution of such  supplemental  indenture  unless such  supplemental  indenture
affects the Trustee's own rights,  duties or immunities  under this Indenture or
otherwise,  in which case the  Trustee may in its  discretion,  but shall not be
obligated to, enter into such supplemental indenture.

          It shall not be necessary for the consent of the Holders under this
Section to approve the particular form of any proposed  supplemental  indenture,
but it shall be sufficient if such consent shall approve the substance thereof.

          Promptly after the execution by the Issuer, the Guarantor and the
Trustee  of any  supplemental  indenture  pursuant  to the  provisions  of  this
Section,  the  Trustee  shall give  notice  thereof  (i) to the  Holders of then
Outstanding  Notes,  by  mailing a notice  thereof by  first-class  mail to such
Holders  at  their  addresses  as  they  shall  appear  on the  register  of the
Registrar.  Any  failure  of the  Trustee  to give such  notice,  or any  defect
therein,  shall not,  however,  in any way impair or affect the  validity of any
such supplemental indenture.


                                       49

<PAGE>



          SECTION 8.3  Effect of Supplemental Indenture.  Upon the
execution of any supplemental  indenture pursuant to the provisions hereof, this
Indenture  shall be and be deemed  to be  modified  and  amended  in  accordance
therewith and the respective rights, limitations of rights, obligations,  duties
and immunities  under this Indenture of the Trustee,  the Issuer,  the Guarantor
and the Holders of the Notes of each series affected thereby shall thereafter be
determined,  exercised  and enforced  hereunder  subject in all respects to such
modifications  and  amendments,  and all the  terms and  conditions  of any such
supplemental  indenture  shall  be and be  deemed  to be part of the  terms  and
conditions of this Indenture for any and all purposes.

          SECTION 8.4  Documents to Be Given to Trustee.  The Trustee,
subject to the  provisions  of Sections  6.1 and 6.2,  may receive an  Officers'
Certificate  and  an  Opinion  of  Counsel  as  conclusive   evidence  that  any
supplemental  indenture  executed  pursuant to this  Article  complies  with the
applicable provision of this Indenture.

          SECTION 8.5  Notation on Notes in Respect of Supplemental
Indentures.  Notes of any series authenticated and delivered after the execution
of any  supplemental  indenture  pursuant to the  provisions of this Article may
bear a notation  form  approved by the Trustee as to any matter  provided for by
such supplemental  indenture. If a supplemental indenture changes the terms of a
Note,  the  Trustee  may  require  the  Holder of such Note to deliver it to the
Trustee, and the Trustee may place an appropriate notation on the Note regarding
the  changed  terms and  return it to such  Holder.  A failure  to make any such
notation  shall not,  however,  in any way impair or affect the  validity of any
such supplemental indenture or any such Note the terms of which are changed.


                                  ARTICLE NINE

                    CONSOLIDATION, MERGER, SALE OR CONVEYANCE
                    -----------------------------------------

          SECTION 9.1  Covenant of the Guarantor and the Issuer Not to
Merge,  Consolidate,  Sell or Convey Property  Except Under Certain  Conditions.
Neither the  Guarantor nor the Issuer shall  consolidate  with, or merge with or
into, any other Person or Persons  (whether or not affiliated with the Guarantor
or the Issuer),  or be a party to successive  consolidations or mergers to which
the Guarantor or the Issuer,  as the case may be, or its successor or successors
shall be a party or  parties,  or sell,  lease or  convey  the  property  of the
Guarantor or the Issuer as an entirety or substantially  as an entirety,  unless
(and in the case of the Issuer,  subject to the  provisions of Section 3.8): (a)
upon any such  consolidation,  merger,  sale,  lease or conveyance,  the due and
punctual  payment of the  Principal  Amount at Maturity,  Issue  Price,  accrued
Original Issue Discount and Redemption  Price on all the Notes,  and the due and
punctual  performance  and  observance of all of the  covenants,  conditions and
other obligations of this Indenture and the Notes to be performed or observed by
the Guarantor or the Issuer, as the case may be, shall be expressly assumed,  by
supplemental  indenture  satisfactory  in  form  to the  Trustee,  executed  and
delivered  to the Trustee by the Person  formed by such  consolidation,  or into
which the  Guarantor or the Issuer,  as the case may be, shall have been merged,
or which shall have acquired such property (the  "Successor  Company");  (b) the
Successor  Company shall be either (i) a Person organized and existing under the
laws of the United States, any state thereof or the District of Columbia or (ii)
a Person organized and

                                       50

<PAGE>



existing under the laws of Canada, Japan, Australia,  New Zealand, any nation in
Western  Europe or of any political  subdivision  of any thereof and such Person
undertakes to pay to the Holders of the Notes any  additional  amounts as may be
necessary in order that every net payment of Principal Amount at Maturity, Issue
Price,  accrued Original Issue Discount and Redemption Price on the Notes, after
withholding  for or on  account  of any  present or future  tax,  assessment  or
governmental  charge imposed upon such Holder  (except for a tax,  assessment or
charge imposed solely as a result of a connection  between the recipient and the
jurisdiction imposing such tax assessment or charge) by reason of or as a result
of such payment being made by a Person which is not a Person  existing under the
laws of the United States or any state thereof or the District of Columbia, will
not be less  than  the  amount  provided  for in the  Notes  to be then  due and
payable;  (c) immediately  after giving effect to such transaction (and treating
any Secured Debt or Sale and Leaseback  Transaction  which becomes an obligation
of the Successor Company as a result of such transaction as having been incurred
or entered into by the Successor  Company at the time of such  transaction),  no
Event of Default,  and no event  which,  after  notice or lapse of time or both,
would become an Event of Default, shall have happened and be continuing; and (d)
in the case of any such  transaction  with respect to the Issuer,  the Guarantor
consents to such transaction and reaffirms the Guarantee.

          SECTION 9.2  Notes to be Secured in Certain Events.  If, upon any
such  consolidation  or merger of the  Guarantor  or the Issuer or upon any such
sale,  lease or  conveyance of the property of the Guarantor or the Issuer as an
entirety or substantially as an entirety to any other Person, any property owned
by the Guarantor immediately prior thereto would thereupon become subject to any
Lien (unless the Secured  Debt in respect of such Lien could have been  incurred
by the Guarantor  without its being required by the provisions of Section 3.6 to
secure the Notes equally and ratably with (or prior to) such Secured Debt),  the
Guarantor,  prior to any such consolidation,  merger, sale, lease or conveyance,
will by indenture  supplemental  hereto secure the Notes  (together with, if the
Guarantor shall so determine, any other Debt incurred,  assumed or guaranteed by
the Guarantor  ranking  equally with, or prior to, the  Guarantee,  whether then
existing or thereafter  created) by direct Lien on such  property,  prior to all
Liens other than any theretofore existing thereon.

          SECTION 9.3  Successor Company Substituted.  In case of any
consolidation, merger, sale, lease or conveyance referred to in Section 9.1, and
following such an assumption by the Successor  Company,  such Successor  Company
shall succeed to and be substituted for the Guarantor or the Issuer, as the case
may be, with the same effect as if it had been named herein.

          Such Successor Company may cause to be signed, and may issue
either in its own name or in the name of the  Guarantor  or the  Issuer,  as the
case  may  be,  prior  to  such  succession,  any or all of the  Notes  issuable
hereunder which  theretofore  shall not have been signed by the Guarantor or the
Issuer, as the case may be, and delivered to the Trustee; and, upon the order of
such Successor Company,  instead of the Guarantor or the Issuer, as the case may
be, and subject to all the terms,  conditions and  limitations in this Indenture
prescribed,  the Trustee  shall  authenticate  and shall deliver any Notes which
previously shall have been signed and delivered by the officers of the Guarantor
or the Issuer,  as the case may be, to the Trustee for  authentication,  and any
Notes  which such  Successor  Company  thereafter  shall  cause to be signed and
delivered to the Trustee for that  purpose.  All of the Notes so issued shall in
all respects  have the same legal rank and benefit  under this  Indenture as the
Notes

                                                      
                                       51

<PAGE>



theretofore or thereafter  issued in accordance with the terms of this Indenture
as though all of such Notes had been issued at the date of the execution hereof.

          In case of any such consolidation, merger, sale, lease or
conveyance  such changes in  phraseology  and form (but not in substance) may be
made in the Notes thereafter to be issued as may be appropriate.

          In the event of any such sale or conveyance (other than a
conveyance  by way of  lease),  the  Guarantor  or the  Issuer or any  Successor
Company which shall theretofore have become such in the manner described in this
Article  shall be  discharged  from all  obligations  and  covenants  under this
Indenture and the Notes and may be liquidated and dissolved.

          SECTION 9.4  Officers' Certificate and Opinion of Counsel
Delivered to Trustee. The Trustee, subject to the provisions of Sections 6.1 and
6.2, may receive an Officers' Certificate and an Opinion of Counsel each stating
that any such consolidation,  merger,  sale, lease or conveyance,  that any such
assumption,  that any such supplemental  indenture and that any such liquidation
or dissolution, complies with the applicable provisions of this Indenture.


                                   ARTICLE TEN

                          SATISFACTION AND DISCHARGE OF
                           INDENTURE; UNCLAIMED MONEYS
                          -----------------------------
          
           SECTION 10.1    Satisfaction and Discharge of Indenture.  (A)  If at
any time (a) the  Issuer  shall  have paid or  caused  to be paid the  Principal
Amount at  Maturity  due and  payable in  respect  of all the Notes  theretofore
authenticated  (other than Notes which have been  destroyed,  lost or stolen and
which have been replaced or paid as provided in Section 2.6), in accordance with
the terms of this  Indenture and such Notes or (b) as to Notes not so paid,  the
Issuer  shall have  delivered  to the  Trustee  for  cancellation  all the Notes
theretofore authenticated (other than any Notes which shall have been destroyed,
lost or stolen and which shall have been replaced or paid as provided in Section
2.6) or (c) as to Notes not so paid or delivered for  cancellation,  (i) all the
Notes  shall  have  become  due and  payable,  and (ii) the  Issuer  shall  have
irrevocably  deposited or caused to be deposited with the Trustee as trust funds
the entire amount in cash (other than moneys repaid by the Trustee or any paying
agent to the Issuer in accordance with Section 10.4) to pay the Principal Amount
at Maturity on all the Notes; and if, in the case of (a), (b) or (c), the Issuer
shall  also pay or cause to be paid all  other  sums  payable  hereunder  by the
Issuer,  then this  Indenture  shall,  subject to Section  10.6,  cease to be of
further effect (except as to (i) rights of registration of transfer and exchange
of the Notes and the Issuer's right of optional redemption, (ii) substitution of
mutilated, defaced, destroyed, lost or stolen Notes, (iii) the rights of Holders
of the Notes to receive  payments  thereon  upon the  original  stated due dates
therefor (but not upon acceleration),  (iv) the rights, obligations,  duties and
immunities of the Trustee  hereunder,  (v) the rights of Holders of the Notes as
beneficiaries  hereof with respect to the property so deposited with the Trustee
and  payable to all or any of them,  (vi) the  obligations  of the Issuer  under
Sections  3.2,  3.3, 3.4, 4.1 and 9.3 and clauses (a) and (b) of Section 9.1 and
(vii) this Article 10 pertinent to such continuing obligations); and the

                                                    
                                       52

<PAGE>



Trustee, on demand of the Issuer accompanied by an Officers'  Certificate and an
Opinion of Counsel,  each stating that all conditions  precedent herein provided
for  relating to the  satisfaction  and  discharge of this  Indenture  have been
complied with,  and at the cost and expense of the Issuer,  shall execute proper
instruments  acknowledging  such  satisfaction  and discharge of this Indenture;
provided  that the rights of Holders of the Notes to receive  amounts in respect
of the Principal  Amount at Maturity or  redemption,  as the case may be, on the
Notes held by them shall not be delayed longer than required by then  applicable
mandatory rules or policies of any national  securities  exchange upon which the
Notes are listed.  The Issuer  agrees to reimburse  the Trustee for any costs or
expenses  thereafter  reasonably  and properly  incurred and to  compensate  the
Trustee for any services  thereafter  reasonably  and  properly  rendered by the
Trustee in connection with this Indenture or the Notes.

          (B) In addition to discharge of this Indenture pursuant to the next
preceding  paragraph (A), the Issuer shall be deemed to have paid and discharged
the entire  indebtedness on all the Notes on the 123rd day after the date of the
deposit  referred  to in  subparagraph  (a) below,  and the  provisions  of this
Indenture with respect to the Notes shall, subject to Section 10.6, no longer be
in effect (except as to (i) rights of  registration  of transfer and exchange of
the Notes and the Issuer's right of optional  redemption,  (ii)  substitution of
mutilated, defaced, destroyed, lost or stolen Notes, (iii) the rights of Holders
of the Notes to receive  payments  thereon  upon the  original  stated due dates
therefor (but not upon acceleration),  solely from the trust fund referred to in
subparagraph (a) below, (iv) the rights,  obligations,  duties and immunities of
the Trustee  hereunder,  (v) the rights of Holders of the Notes as beneficiaries
hereof with respect to the property so deposited with the Trustee and payable to
all or any of them, (vi) the respective obligations of the Issuer under Sections
3.2, 3.3, 3.4, 4.1 and 9.3 and clauses (a) and (b) of Section 9.1 and (vii) this
Article 10 pertinent to such continuing  obligations);  and the Trustee,  at the
cost and expense of the Issuer,  shall, at the Issuer's request,  execute proper
instruments acknowledging the same, if:

          (a)       the Issuer shall have irrevocably deposited or caused to be
         irrevocably  deposited  with the  Trustee as a trust fund  specifically
         pledged as security  for, and  dedicated  solely to, the benefit of the
         Holders  of the  Notes  (i)  cash  in an  amount,  or  (ii)  Government
         Obligations, maturing as to principal and interest at such times and in
         such  amounts  as will  insure  the  availability  of cash,  or (iii) a
         combination  thereof,   sufficient  in  the  opinion  of  a  nationally
         recognized  firm  of  independent  public  accountants  expressed  in a
         written  certification  thereof  delivered to the  Trustee,  to pay the
         Principal  Amount at  Maturity  on all the Notes on each date that such
         amount is due and payable;

          (b)       no Event of Default or event which, with notice or lapse of
         time or both,  would  become an Event of  Default  with  respect to the
         Notes shall have occurred and be continuing on the date of such deposit
         or, insofar as clauses (e) and (f) of Section 5.1 are concerned, at any
         time  during the period  ending on the 123rd day after the date of such
         deposit (it being  understood  that this condition  shall not be deemed
         satisfied until the expiration of such period);

          (c)       such deposit, defeasance and discharge shall not result in
         a breach or violation of, or constitute a default under, this Indenture
         or any other  agreement or instrument to which either the Issuer or the
         Guarantor is a party or by which either is bound;

                                                      
                                       53

<PAGE>



          (d)       the Issuer shall have delivered to the Trustee an Opinion of
         Counsel  (which  counsel,  for the  purpose  of clause  (ii),  shall be
         counsel selected by the Issuer with national  recognition in matters of
         federal  income tax law) to the effect that (i) such deposit  shall not
         result  in the  Issuer,  the  Guarantor,  the  Trustee  or  such  trust
         constituting an "investment  company" under the Investment  Company Act
         of 1940, as amended, and (ii) either (A) there has been a change in the
         applicable  Federal income tax law or (B) the Issuer has received from,
         or there has been published by, the Internal  Revenue  Service a ruling
         to the effect that,  and in any such case  referred to in clause (A) or
         (B) such  Opinion of Counsel  shall  confirm  that based  thereon,  the
         Holders of the Notes then Outstanding will not recognize  income,  gain
         or loss for Federal  income tax  purposes as a result of such  deposit,
         defeasance  and discharge and will be subject to Federal  income tax on
         the same  amounts,  in the same  manner  and at the same times as would
         have been the case if such  deposit,  defeasance  and discharge had not
         occurred; and

          (e)       the Issuer shall have delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that all conditions
         precedent  herein provided for relating to the defeasance  contemplated
         by this paragraph have been complied with.

          (C)       The Issuer and the Guarantor shall be released from their
respective  obligations  under  Sections  3.5, 3.6, 3.7, 3.8 and 3.9 and Article
Nine (other than  clauses  (a),  (b) and (d) of Section 9.1 with  respect to the
Notes on and  after  the date the  conditions  set  forth  below  are  satisfied
(hereinafter,  "covenant  defeasance").  Covenant  defeasance  means that,  with
respect to the  Outstanding  Notes,  the Issuer  and the  Guarantor  may omit to
comply with and shall have no  liability  in respect of any term,  condition  or
limitation  set forth in Sections  3.5,  3.6,  3.7, 3.8 and 3.9 and Article Nine
(other than Section  9.1(a),  (b) and (d)),  whether  directly or  indirectly by
reason of any  reference  elsewhere  herein to any such  Section or Article,  by
reason of any reference in such Section or Article to any other provision herein
or by  reason of any  reference  to any such  Section  or  Article  in any other
document,  and such omission to comply shall not  constitute an Event of Default
under Section 5.1 with respect to the  Outstanding  Notes,  but the remainder of
this  Indenture  shall  be  unaffected  thereby.  The  following  shall  be  the
conditions to application of this paragraph (C):

          (a)       the Issuer shall have irrevocably deposited or caused to be
         irrevocably  deposited  with the  Trustee as a trust fund  specifically
         pledged as security  for, and  dedicated  solely to, the benefit of the
         Holders  of the  Notes,  (i)  cash in an  amount,  or  (ii)  Government
         Obligations, maturing as to principal and interest at such times and in
         such  amounts  as will  insure  the  availability  of cash,  or (iii) a
         combination  thereof,   sufficient  in  the  opinion  of  a  nationally
         recognized  firm  of  independent  public  accountants  expressed  in a
         written  certification  thereof  delivered to the  Trustee,  to pay the
         Principal  Amount at  Maturity  on all the Notes on each date that such
         amount is due and payable;

          (b)       no Event of Default or event which, with notice or lapse of
         time or both,  would  become an Event of  Default  with  respect to the
         Notes shall have occurred and be continuing on the date of such deposit
         or, insofar as clauses (e) and (f) of Section 5.1 are concerned, at any
         time during the period ending on the 123rd day after

                                                    
                                       54

<PAGE>



         the date of such deposit (it being understood that this condition shall
         not be deemed satisfied until the expiration of such period);

          (c)       such deposit and covenant defeasance shall not result in a
         breach or violation of, or constitute a default  under,  this Indenture
         or any other  agreement or instrument to which either the Issuer or the
         Guarantor is a party or by which either is bound;

          (d)       the Issuer shall have delivered to the Trustee an Opinion of
         Counsel  (which  counsel,  for the  purpose  of clause  (ii),  shall be
         counsel selected by the Issuer with national  recognition in matters of
         federal  income tax law) to the effect that (i) such deposit  shall not
         result  in the  Issuer,  the  Guarantor,  the  Trustee  or  such  trust
         constituting an "investment  company" under the Investment  Company Act
         of 1940, as amended, and (ii) the Holders of the Notes then Outstanding
         will not recognize income, gain or loss for Federal income tax purposes
         as a result of such deposit and covenant defeasance and will be subject
         to Federal  income tax on the same  amounts,  in the same manner and at
         the same times as would have been the case if such deposit and covenant
         defeasance had not occurred; and

          (e)       the Issuer shall have delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that all conditions
         precedent herein provided for relating to such covenant defeasance have
         been complied with.

          SECTION 10.2  Application by Trustee of Funds Deposited for
Payment of Notes. Subject to Section 10.4, all moneys deposited with the Trustee
pursuant to Section  10.1 in respect of the  Outstanding  Notes shall be held in
trust and applied by it to the  payment,  either  directly or through any Paying
Agent  (including the Issuer acting as its own Paying Agent),  to the Holders of
the Notes of all sums due and to become due thereon for the Principal  Amount at
Maturity,  but such money need not be segregated  from other funds except to the
extent required by law.

          SECTION 10.3  Repayment of Moneys Held by Paying Agent. In
connection with the satisfaction and discharge of this Indenture with respect to
the Notes,  all moneys then held by any Paying Agent under the provisions of the
Indenture shall, upon demand of the Issuer, be paid to the Trustee and thereupon
such Paying Agent shall be released from all further  liability  with respect to
such moneys.

          SECTION 10.4  Return of Moneys Held by Trustee and Paying
Agent Unclaimed for Two Years.  Any moneys deposited with or paid to the Trustee
or any Paying  Agent for the  payment of any amount on any Note and not  applied
but  remaining  unclaimed  for two years  after the date upon which such  amount
shall have become due and payable, shall, upon the written request of the Issuer
and unless otherwise  required by mandatory  provisions of applicable escheat or
abandoned or unclaimed  property  law, be repaid to the Issuer by the Trustee or
such Paying Agent, and the Holder of the Notes shall,  unless otherwise required
by mandatory provisions of applicable escheat or abandoned or unclaimed property
laws,  thereafter  look only to the Issuer for any payment which such Holder may
be entitled to collect,  and all  liability  of the Trustee or any Paying  Agent
with respect to such moneys shall thereupon cease;  provided,  however, that the
Trustee or such Paying Agent,

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<PAGE>



before  being  required  to make any  such  repayment  with  respect  to  moneys
deposited with it for any payment,  shall at the expense of the Issuer,  mail by
first-class  mail to  Holders  of such  Notes at their  addresses  as they shall
appear on the  register of the  Registrar,  notice  that such moneys  remain and
that, after a date specified therein,  which shall not be less than 30 days from
the date of such mailing,  any unclaimed  balance of such moneys then  remaining
will be repaid to the Issuer.

          SECTION 10.5  Indemnity for Government Obligations.  The Issuer
shall pay and indemnify the Trustee against any tax, fee or other charge imposed
on or assessed against the Government  Obligations deposited pursuant to Section
10.1 or the  principal  or  interest  received  in  respect  of such  Government
Obligations,  other than any such tax,  fee or other  charge which by law is for
the  account  of the  Holders  of the Notes for whose  benefit  such  Government
Obligations are held.

          SECTION 10.6  Reinstatement.  If the Trustee or Paying Agent is
unable to apply any  money or  Government  Obligation  in  accordance  with this
Article  10 by  reason  of any  legal  proceeding  or by  reason of any order or
judgment  of any  court or  governmental  authority  enjoining,  restraining  or
otherwise  prohibiting  such  application,  the  Issuer's  and  the  Guarantor's
obligations  under this  Indenture and the Notes shall be revived and reinstated
as though no deposit had occurred pursuant to this Article 10 until such time as
the Trustee or Paying Agent is  permitted to apply all such money or  Government
Obligations in accordance with this Article 10; provided,  however, that, if the
Issuer or the  Guarantor  has made any  payment of  principal  in respect of any
Notes  because  of the  reinstatement  of its  obligations,  the  Issuer  or the
Guarantor,  as applicable,  shall be entitled,  at its election,  (a) to receive
from the Trustee or Paying Agent,  as applicable,  that portion of such money or
Government  Obligations  equal  to  the  amount  of  such  payment  or (b) to be
subrogated  to the rights of the Holders of such Notes to receive  such  payment
from the money or Government Obligations held by the Trustee or Paying Agent.


                                 ARTICLE ELEVEN

                            MISCELLANEOUS PROVISIONS
                            ------------------------

          SECTION 11.1  Incorporators, Stockholders, Officers and Directors
of Issuer and Guarantor Exempt from Individual  Liability.  No recourse under or
upon any obligation,  covenant or agreement  contained in this Indenture,  or in
the Notes,  or  because  of any  indebtedness  evidenced  thereby,  shall be had
against  any  incorporator,  as such,  or  against  any past,  present or future
stockholder,  officer or director, as such, of the Issuer or the Guarantor or of
any  successor,  either  directly or through the Issuer or the  Guarantor or any
successor,  under any rule of law, statute or constitutional provision or by the
enforcement  of any  assessment  or by any  legal  or  equitable  proceeding  or
otherwise,  all such  liability  being  expressly  waived  and  released  by the
acceptance of the Notes by the Holders thereof and as part of the  consideration
for the issue of the Notes.

          SECTION 11.2  Provisions of Indenture for the Sole Benefit of
Parties and Holders of Notes.  Nothing in this Indenture or in the Notes, 
expressed or implied, shall give or be construed to give to any person, firm or 
corporation, other than the parties

                                                     
                                       56

<PAGE>



hereto and their successors and the Holders of the Notes, any legal or equitable
right,  remedy or claim under this  Indenture or under any covenant or provision
herein  contained,  all such covenants and provisions being for the sole benefit
of the parties hereto and their successors and of the Holders of the Notes.

          SECTION 11.3  Successors and Assigns of Issuer or Guarantor
Bound by Indenture. All the covenants, stipulations,  promises and agreements in
this Indenture contained by or on behalf of the Issuer or the Guarantor,  as the
case may be, shall bind any successors and assigns, whether so expressed or not.

          SECTION 11.4  Notices and Demands on Issuer, the Guarantor,
Trustee and Holders of Notes.  Any notice or demand  which by any  provision  of
this  Indenture is required or permitted to be given or served by the Trustee or
by any  Holder of Notes to or upon the Issuer or the  Guarantor  may be given or
served in person or by being  deposited  postage  prepaid in the  United  States
mail,  first-class  mail (except as  otherwise  specifically  provided  herein),
addressed  (until another address of the Issuer or the Guarantor is filed by the
Issuer or the Guarantor with the Trustee) to Aerial  Communications,  Inc., 8410
West Bryn Mawr Avenue,  Suite 1100,  Chicago,  Illinois  60631-3486,  Attention:
Chief Financial Officer, and to Telephone and Data Systems, Inc., Suite 4000, 30
North LaSalle Street, Chicago, Illinois 60602, Attention: Treasurer. Any notice,
direction,  request  or demand by the Issuer or the  Guarantor  or any Holder of
Notes  to or upon the  Trustee  may be given or  served  in  person  or by being
deposited postage prepaid in the United States mail, first-class mail (except as
otherwise specifically provided herein), addressed (until another address of the
Trustee is filed by the Trustee with the Issuer) to The First  National  Bank of
Chicago,  One First National Plaza, Suite 0126,  Chicago,  IL 60670,  Attention:
Corporate  Trust Office.  Any notice required or permitted to be given or served
by the Issuer,  the Guarantor or by the Trustee to or upon any Holders of Notes,
may be given or served by being deposited in the United States mail, first-class
mail  (except as otherwise  specifically  provided  herein),  addressed at their
addresses as they shall appear on the register of the Registrar.

          In any case where notice to the Noteholders is given by mail,
neither the failure to mail such notice, nor any defect in any notice so mailed,
to any  particular  Holder  shall  affect the  sufficiency  of such  notice with
respect  to other  Holders.  Where  this  Indenture  provides  for notice in any
manner,  such notice may be waived in writing by the person  entitled to receive
such  notice,  either  before or after the event,  and such waiver  shall be the
equivalent of such notice.  Waivers of notice by Holders shall be filed with the
Trustee,  but such filing shall not be a condition  precedent to the validity of
any action taken in reliance upon such waiver.

           In case, by reason of the suspension of or irregularities in regular
mail service,  it shall be  impracticable to mail notice to the Issuer when such
notice is required to be given pursuant to any provision of this Indenture, then
any manner of giving  such  notice as shall be  reasonably  satisfactory  to the
Trustee shall be deemed to be a sufficient giving of such notice.

          SECTION 11.5  Officers' Certificates and Opinions of Counsel; 
Statements to be Contained Therein.  Upon any application or demand by the 
Issuer or the Guarantor to the Trustee to take any action under any of the 
provisions of this Indenture, the

                                                     
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<PAGE>



Issuer or the  Guarantor,  as the case may be,  shall  furnish to the Trustee an
Officers' Certificate stating that all conditions precedent provided for in this
Indenture relating to the proposed action have been complied with and an Opinion
of Counsel  stating  that in the  opinion of such  counsel  all such  conditions
precedent  have  been  complied  with,  except  that  in the  case  of any  such
application  or  demand  as  to  which  the  furnishing  of  such  documents  is
specifically  required  by any  provision  of this  Indenture  relating  to such
particular  application or demand, no additional  certificate or opinion need be
furnished.

          Each certificate or opinion provided for in this Indenture and
delivered to the Trustee with respect to compliance with a condition or covenant
provided for in this  Indenture  shall  include (a) a statement  that the person
making such  certificate  or opinion has read such covenant or condition,  (b) a
brief statement as to the nature and scope of the  examination or  investigation
upon which the statements or opinions  contained in such  certificate or opinion
are based, (c) a statement that, in the opinion of such person, he has made such
examination  or  investigation  as is  necessary  to enable  him to  express  an
informed  opinion as to  whether  or not such  covenant  or  condition  has been
complied  with and (d) a statement  as to whether or not, in the opinion of such
person, such condition or covenant has been complied with.

        Any certificate, statement or opinion of an officer of the Issuer or the
Guarantor  may  be  based,  insofar  as it  relates  to  legal  matters,  upon a
certificate  or opinion of or  representations  by counsel,  unless such officer
knows that the certificate or opinion of or representations  with respect to the
matters  upon  which  his  certificate,  statement  or  opinion  may be based as
aforesaid are erroneous,  or in the exercise of reasonable care should know that
the same are erroneous. Any certificate,  statement or opinion of counsel may be
based,  insofar as it relates to factual  matters,  information  with respect to
which is in the possession of the Issuer or the  Guarantor,  as the case may be,
upon the certificate,  statement or opinion of or  representations by an officer
or officers of the Issuer or the  Guarantor,  unless such counsel knows that the
certificate, statement or opinion or representations with respect to the matters
upon which his  certificate,  statement or opinion may be based as aforesaid are
erroneous,  or in the exercise of reasonable  care should know that the same are
erroneous.

        Any certificate, statement or opinion of an officer of the Issuer or the
Guarantor  or of counsel  may be based,  insofar  as it  relates  to  accounting
matters, upon a certificate or opinion of or representations by an accountant or
firm of accountants  in the employ of the Issuer or the  Guarantor,  as the case
may be,  unless  such  officer or  counsel,  as the case may be,  knows that the
certificate or opinion or representations with respect to the accounting matters
upon which his  certificate,  statement or opinion may be based as aforesaid are
erroneous,  or in the exercise of reasonable  care should know that the same are
erroneous.

          Any certificate or opinion of any independent firm of public
accountants  filed with and  directed to the Trustee  shall  contain a statement
that such firm is independent.

          SECTION 11.6 Payments Due on Saturdays, Sundays and
Holidays.  If the date of maturity of  principal  of the Notes or the date fixed
for  redemption  or  repayment  of the Notes shall not be a Business  Day,  then
payment  of amounts  due on the Notes need not be made on such date,  but may be
made on the next succeeding Business Day

                                                      
                                       58

<PAGE>



with the same  force and effect as if made on the date of  maturity  or the date
fixed for  redemption or repayment  and no interest  shall accrue for the period
after such date.

          SECTION 11.7  Illinois Law to Govern.  This Indenture and the
Notes shall be deemed to be a contract  under the laws of the State of Illinois,
and for all  purposes  shall be construed  in  accordance  with the laws of such
State, except as may otherwise be required by mandatory provisions of law.

          SECTION 11.8  Counterparts.  This Indenture may be executed in
any  number  of  counterparts,  each of  which  shall be an  original;  but such
counterparts shall together constitute but one and the same instrument.

          SECTION 11.9  Effect of Headings.  The Article and Section
headings herein and the Table of Contents are for convenience only and shall not
affect the construction hereof.


                                 ARTICLE TWELVE

                               REDEMPTION OF NOTES
                               -------------------

          SECTION 12.1  Right to Redeem; Notices to Trustee.  The Issuer,
at its  option,  may  redeem  the Notes in  accordance  with the  provisions  of
paragraphs 5 and 6 of the Notes.  If the Issuer elects to redeem Notes  pursuant
to  paragraph  5 of the Notes,  it shall  notify  the  Trustee in writing of the
redemption  date,  the Principal  Amount at Maturity of Notes to be redeemed and
the Redemption  Price.  The Issuer shall give the notice to the Trustee provided
for in this Section 12.1 at least 70 days before the  redemption  date (unless a
shorter notice shall be satisfactory to the Trustee).

          SECTION 12.2  Notice of Redemption; Partial Redemptions.  (a)
Notice of redemption to the Holders of the Notes to be redeemed as a whole or in
part shall be given by mailing  notice of such  redemption  by first class mail,
postage  prepaid,  at least 30 days and not more than 60 days  prior to the date
fixed for  redemption,  to such  Holders at their last  addresses  as they shall
appear upon the  register of the  Registrar.  Any notice  which is mailed in the
manner herein provided shall be  conclusively  presumed to have been duly given,
whether or not the Holder  receives the notice.  Failure to give notice by mail,
or any defect in the notice to the Holder of any Note  designated for redemption
as a whole or in part,  shall not affect the validity of the proceedings for the
redemption of any other Note.

          (b)       The notice of redemption to each such Holder shall specify
the  Principal  Amount  at  Maturity  of each  Note  held by such  Holder  to be
redeemed,  the date fixed for  redemption,  the Redemption  Price,  the place or
places of payment and that payment will be made upon  presentation and surrender
of such Note,  that on and after said date Original Issue Discount and interest,
if any,  will  cease to accrue  (unless  the  Issuer  defaults  in  making  such
redemption  payment or the Paying Agent is  prohibited  from making such payment
pursuant to the terms of this Indenture) and that no  representation  is made as
to the  correctness  or accuracy  of the CUSIP  number,  if any,  listed in such
notice or printed on the Notes.  In case any Note is to be redeemed in part only
the notice of redemption shall state the portion of the

                                                     
                                       59

<PAGE>



Principal  Amount at Maturity thereof to be redeemed and shall state that on and
after the date fixed for redemption,  upon surrender of such Note, a new Note or
Notes in authorized  denominations for an aggregate Principal Amount at Maturity
equal to the unredeemed portion thereof will be issued in the name of the Holder
thereof upon cancellation of the original Note.

          (c)       The notice of redemption of Notes to be redeemed at the
option of the Issuer shall be given by the Issuer or, at the  Issuer's  request,
by the Trustee in the name and at the  expense of the Issuer,  in which case the
Issuer will provide the Trustee with the information  required to be included in
such notice by the preceding paragraph.

          (d)       On or before the redemption date specified in the notice of
redemption  given as provided in this Section,  the Issuer will deposit with the
Trustee or with one or more  Paying  Agents  (or, if the Issuer is acting as its
own paying agent, set aside,  segregate and hold in trust as provided in Section
3.4) an amount of money  sufficient  to  redeem on the  redemption  date all the
Notes so called for redemption at the applicable  Redemption  Price. In the case
of any partial redemption, selection of the Notes for redemption will be made by
the Trustee on a pro rata basis,  by lot or by a method that  complies  with the
applicable  legal and  securities  exchange  requirements,  if any, and that the
Trustee  considers  fair and  appropriate  and in  accordance  with the  methods
generally used at the time of selection by fiduciaries in similar circumstances.
Notes may be redeemed in part in multiples equal to $1,000  Principal  Amount at
Maturity or any integral multiple thereof. The Trustee shall promptly notify the
Issuer in writing of the Notes selected for redemption. For all purposes of this
Indenture, unless the context otherwise requires, all provisions relating to the
redemption  of Notes  shall  relate,  in the case of any Note  redeemed or to be
redeemed  only in part,  to the portion of the  Principal  Amount at Maturity of
such Note which has been or is to be redeemed.

          SECTION 12.3  Payment of Notes Called for Redemption.  If notice
of redemption  has been given as provided in Section 12.2, the Notes or portions
of the Notes  specified  in such notice shall become due and payable on the date
and at the place stated in such notice at the applicable  Redemption  Price, and
on and after said date (unless the Issuer  shall  default in the payment of such
Notes at the  applicable  Redemption  Price) the  Original  Issue  Discount  and
interest,  if any, on the Notes or  portions  of Notes so called for  redemption
shall cease to accrue,  and,  except as provided in Sections 6.5 and 10.4,  such
Notes shall cease from and after the date fixed for redemption to be entitled to
any benefit or security under this Indenture, and the Holders thereof shall have
no right in  respect of such Notes  except the right to receive  the  applicable
Redemption Price thereof. On presentation and surrender of such Notes at a place
of  payment  specified  in said  notice,  such Notes or the  specified  portions
thereof  shall be paid and redeemed by the Issuer at the  applicable  Redemption
Price.

          If any Note called for redemption shall not be so paid upon
surrender  thereof  for  redemption,  the  principal  shall,  until paid or duly
provided for,  bear interest from the date fixed for  redemption at the yield to
maturity borne by the Notes.

          Upon presentation of any Note redeemed in part only, the Issuer
shall execute and the Trustee shall  authenticate and deliver to or on the order
of the Holder  thereof,  at the expense of the Issuer,  a new Note or Notes,  of
authorized  denominations,   in  Principal  Amount  at  Maturity  equal  to  the
unredeemed portion of the Note so presented.


                                                      
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<PAGE>



          SECTION 12.4  Exclusion of Certain Notes from Eligibility for
Selection for Redemption. Notes shall be excluded from eligibility for selection
for redemption if they are identified by registration and certificate  number in
an Officers'  Certificate delivered to the Trustee at least 40 days prior to the
last date on which  notice of  redemption  may be given as being owned of record
and beneficially by, and not pledged or hypothecated by: (a) the Issuer; (b) the
Guarantor;   or  (c)  an  entity  specifically   identified  in  such  Officers'
Certificate  as directly or  indirectly  controlling  or  controlled by or under
direct or indirect common control with the Issuer or the Guarantor.


                                ARTICLE THIRTEEN

                                    GUARANTEE
                                    ---------

          SECTION 13.1  Telephone and Data Systems, Inc. Guarantee.  For
value received, the Guarantor, in accordance with this Article Thirteen,  hereby
absolutely, fully, unconditionally and irrevocably guarantees to the Trustee and
the Holders,  as if the Guarantor were the principal debtor, the full and prompt
payment  when due of all  Indenture  Obligations  (which  for  purposes  of this
Guarantee shall also be deemed to include all commissions,  fees, charges, costs
and  other  expenses  (including,   without  limitation,  all  court  costs  and
reasonable legal fees and  disbursements of counsel) arising out of, or incurred
by the  Trustee or the  Holders in  connection  with,  the  enforcement  of this
Guarantee).

          SECTION 13.2  Continuing Guarantee; No Right of Set-Off;
Independent  Obligation.  (a) This Guarantee shall be a continuing  guarantee of
the  payment of all  Indenture  Obligations  and shall  remain in full force and
effect until the payment in full of all of the Indenture  Obligations  and shall
apply to and secure any ultimate  balance due or remaining unpaid to the Trustee
or the  Holders;  and this  Guarantee  shall  not be  considered  as  wholly  or
partially  satisfied by the payment or  liquidation  at any time or from time to
time of any sum of money  for the time  being  due or  remaining  unpaid  to the
Trustee or the Holders.  Without  limiting the generality of the foregoing,  the
Guarantor's  liability shall extend to all amounts which  constitute part of the
Indenture  Obligations  and would be owed by the Issuer under this Indenture and
the  Notes  but for the fact  that  they are  unenforceable,  reduced,  limited,
impaired,  suspended or not  allowable  due to the  existence  of a  bankruptcy,
reorganization or similar proceeding involving the Issuer.

           (b)       The Guarantor hereby guarantees that the Indenture
Obligations will be paid to the Trustee without set-off or counterclaim or other
reduction  whatsoever  (whether for taxes,  withholding  or otherwise) in lawful
currency of the United States of America.

          (c)        The Guarantor's liability to pay or perform or cause the
performance  of the  Indenture  Obligations  under this  Guarantee  shall  arise
forthwith  after demand for payment or performance by the Trustee has been given
to the Guarantor in the manner prescribed in Section 11.4 hereof.

          (d)        Except as provided herein, the provisions of this Article 
Thirteen cover all agreements between the parties hereto relative to this 
Guarantee and none of

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<PAGE>



the parties  shall be bound by any  representation,  warranty or promise made by
any Person relative thereto which is not embodied herein; and it is specifically
acknowledged  and agreed that this Guarantee has been delivered by the Guarantor
free of any  conditions  whatsoever and that no  representations,  warranties or
promises have been made to the Guarantor  affecting its  liabilities  hereunder,
and that the Trustee  shall not be bound by any  representations,  warranties or
promises now or at any time hereafter made by the Issuer to the Guarantor.

          (e)       This Guarantee is a guarantee of payment and not of
collectibility  and is in no way  conditioned or contingent  upon any attempt to
collect  from or enforce  performance  or  compliance  by the Issuer or upon any
other event or condition whatsoever.

          (f)       The obligations of the Guarantor set forth herein constitute
the full recourse  obligations  of the Guarantor  enforceable  against it to the
full extent of all its assets and properties.

          SECTION 13.3  Guarantee Unconditional.  The obligations of the
Guarantor  hereunder are  independent of the obligations of the Issuer under the
Notes and this  Indenture  and a separate  action or actions  may be brought and
prosecuted  against  the  Guarantor  whether or not an action or  proceeding  is
brought  against  the Issuer and whether or not the Issuer is joined in any such
action or proceeding.  The liability of the Guarantor  hereunder is irrevocable,
absolute and  unconditional  and (to the extent  permitted by law) the liability
and obligations of the Guarantor  hereunder  shall not be released,  discharged,
mitigated, waived, impaired or affected in whole or in part by:

          (a)       any lack of validity or enforceability in respect of any
         indebtedness  or other  obligation  of the  Issuer or any other  Person
         under this  Indenture  or the Notes,  or any  agreement  or  instrument
         relating to any of the foregoing;

          (b)       any grants of time, renewals, extensions, indulgences,
         releases,  discharges or modifications which the Trustee or the Holders
         may extend to, or make with,  the Issuer,  the  Guarantor  or any other
         Person, or any change in the time, manner or place of payment of, or in
         any other  term of,  all or any of the  Indenture  Obligations,  or any
         other amendment or waiver of, or any consent to or departure from, this
         Indenture  or the Notes,  including  any  increase  or  decrease in the
         Indenture Obligations;

          (c)       the taking of security from the Issuer, the Guarantor or any
         other Person, and the release, discharge or alteration of, or other 
         dealing with, such security;

          (d)       the abstention from taking security from the Issuer, the
         Guarantor or any other Person or from perfecting, continuing to keep 
         perfected or taking advantage of any security;

          (e)       any loss, diminution of value or lack of enforceability of 
         any security received from the Issuer, the Guarantor or any other 
         Person, and including any other guarantees received by the Trustee;

                                                       
                                       62

<PAGE>



          (f)       any other dealings by the Issuer or the Guarantor with any
         other Person, or with any security;

          (g)       the Trustee's or the Holders' acceptance of compositions
         from the Issuer or the Guarantor;

          (h)       the application by the Holders or the Trustee of all monies
         at any  time and  from  time to time  received  from  the  Issuer,  the
         Guarantor  or any  other  Person on  account  of any  indebtedness  and
         liabilities  owing by the Issuer or the Guarantor to the Trustee or the
         Holders,  in such manner as the  Trustee or the Holders  deems best and
         the changing of such application in whole or in part and at any time or
         from time to time,  or any  manner of  application  of  collateral,  or
         proceeds thereof,  to all or any of the Indenture  Obligations,  or the
         manner of sale of any collateral;

          (i)       the release or discharge of the Issuer or the Guarantor or
         of any other guarantor of the Notes or of any Person liable directly as
         surety or otherwise  by  operation  of law or otherwise  for the Notes,
         other than an  express  release in  writing  given by the  Trustee,  on
         behalf  of  the  Holders,  of  the  liability  and  obligations  of the
         Guarantor hereunder;

          (j)       any change in the name, business, capital structure or
         governing instrument of the Issuer or the Guarantor or any refinancing 
         or restructuring of any of the Indenture Obligations;

          (k)       the sale of the Issuer's or the Guarantor's business or any
         part thereof;

          (l)       any    merger    or    consolidation,   arrangement   or
         reorganization of the Issuer, the Guarantor,  any Person resulting from
         the merger or  consolidation  of the Issuer or the  Guarantor  with any
         other  Person  or any  other  successor  to such  Person  or  merged or
         consolidated  Person or any other  change in the  corporate  existence,
         structure or ownership of the Issuer or the  Guarantor or any change in
         the corporate relationship between the Issuer and the Guarantor, or any
         termination of such relationship;

          (m)       the insolvency,  bankruptcy,  liquidation,  winding-up,
         dissolution,  receivership,  arrangement,  readjustment, assignment for
         the benefit of creditors or distribution of the assets of the Issuer or
         its assets or any resulting  discharge of any obligations of the Issuer
         (whether  voluntary  or  involuntary)  or  of  the  Guarantor  (whether
         voluntary or involuntary) or the loss of corporate existence;

          (n)       any arrangement or plan of reorganization affecting the
         Issuer or the Guarantor;

          (o)       any failure, omission or delay on the part of the Issuer to
         conform or comply with any term of this Indenture;

          (p)       any limitation on the liability or obligations of the Issuer
         or

                                                      
                                       63

<PAGE>



         any other person under this Indenture,  or any discharge,  termination,
         cancellation,     distribution,     irregularity,     invalidity     or
         unenforceability in whole or in part, of this Indenture;

          (q)       any other circumstance that might otherwise constitute a
         defense available to, or discharge of, the Issuer or the Guarantor; or

          (r)       any modification, compromise, settlement or release by the
         Trustee,  or by  operation  of  law  or  otherwise,  of  the  Indenture
         Obligations  or the  liability of the Issuer or any other obligor under
         the Notes, or of any  collateral,  in whole or in part, and any refusal
         of payment by the Trustee,  in whole or in part, from any other obligor
         or other guarantor in connection with any of the Indenture Obligations,
         whether or not with notice to, or further assent by, or any reservation
         of rights against, the Guarantor.

          SECTION 13.4  Right to Demand Full Performance.  In the event of
any demand for payment by the Trustee from the Guarantor hereunder,  the Trustee
or the Holders  shall have the right to demand its full claim and to receive all
payments in respect  thereof until the Indenture  Obligations  have been paid in
full, and the Guarantor  shall  continue to be liable  hereunder for any balance
which may be owing to the  Trustee  or the  Holders  by the  Issuer  under  this
Indenture  and the Notes.  The  retention  by the  Trustee or the Holders of any
security,  prior to the  realization by the Trustee or the Holders of its rights
to such security upon foreclosure thereon, shall not, as between the Trustee and
the  Guarantor,  be  considered as a purchase of such  security,  or as payment,
satisfaction or reduction of the Indenture Obligations due to the Trustee or the
Holders by the Issuer or any part thereof. The Guarantor, promptly after demand,
will  reimburse  the  Trustee  and the  Holders  for all costs and  expenses  of
collecting such amount under, or enforcing this  Guarantee,  including,  without
limitation, the reasonable fees and expenses of counsel.

          SECTION 13.5  Waivers.  (a)  The Guarantor hereby expressly
waives  (to the  extent  permitted  by law)  notice  of the  acceptance  of this
Guarantee and notice of the  incurrence,  existence,  renewal,  extension or the
non-performance,  non-payment,  or non-observance on the part of the Issuer of
any of the terms, covenants,  conditions and provisions of this Indenture or the
Notes or any other notice whatsoever to or upon the Issuer or the Guarantor with
respect  to the  Indenture  Obligations,  whether  by  statute,  rule  of law or
otherwise. The Guarantor hereby acknowledges communication to it of the terms of
this  Indenture and the Notes and all of the  provisions  therein  contained and
consents to and approves the same. The Guarantor hereby expressly waives (to the
extent permitted by law) diligence,  presentment, protest and demand for payment
with respect to (i) any notice of any sale, transfer or other disposition of any
right,  title to or interest  in the Notes by the Holders or in this  Indenture,
(ii) any release of the Guarantor from its obligations  hereunder resulting from
any loss by it of its  rights  of  subrogation  hereunder  and  (iii)  any other
circumstance  whatsoever  that might  otherwise  constitute a legal or equitable
discharge,  release or defense of a guarantor or surety or that might  otherwise
limit recourse against the Guarantor.

          (b)       Without prejudice to any of the rights or recourses which
the Trustee or the Holders may have  against the Issuer,  the  Guarantor  hereby
expressly  waives (to the  extent  permitted  by law) any right to  require  the
Trustee or the Holders to:

                (i)   enforce, assert, exercise, initiate or exhaust any rights,
         remedies or

                                                      

                                       64

<PAGE>



         recourse against the Issuer, the Guarantor or any other Person under 
         this Indenture or otherwise;

               (ii)   value,  realize  upon, or dispose of any security of
         the Issuer or any other Person held by the Trustee or the Holders;

               (iii)  initiate  or  exhaust  any other  remedy  which the
         Trustee or the Holders may have in law or equity; or
     
               (iv)   mitigate the damages resulting from any default under this
         Indenture;

before requiring or becoming entitled to demand payment from the Guarantor under
this Guarantee.

          SECTION 13.6 The Guarantor  Remains Obligated in the Event the
Issuer is No Longer  Obligated to  Discharge  Indenture  Obligations.  It is the
express  intention of the Trustee and the  Guarantor  that if for any reason the
Issuer  has no legal  existence,  is or  becomes  under no legal  obligation  to
discharge the Indenture  Obligations  owing to the Trustee or the Holders by the
Issuer or if any of the Indenture Obligations owing by the Issuer to the Trustee
or the Holders becomes  irrecoverable from the Issuer by operation of law or for
any  reason  whatsoever,  this  Guarantee  and  the  covenants,  agreements  and
obligations  of  the  Guarantor   contained  in  this  Article   Thirteen  shall
nevertheless  be  binding  upon  the  Guarantor,  until  such  time as all  such
Indenture  Obligations  have been paid in full to the Trustee and all  Indenture
Obligations  owing  to the  Trustee  or the  Holders  by the  Issuer  have  been
discharged,  or such  earlier  time as Section 10.1 shall apply to the Notes and
the Guarantor shall be responsible for the payment thereof to the Trustee or the
Holders upon demand.

          SECTION 13.7 Subrogation.  The Guarantor will not exercise any
rights  that it may now or  hereafter  acquire  against  the Issuer or any other
guarantor that arise from the existence,  payment, performance or enforcement of
the Guarantor's  obligations under the Guarantee including,  without limitation,
any  right  of   subrogation,   reimbursement,   exoneration,   contribution  or
indemnification  and any  right to  participate  in any  claim or  remedy of the
Holders or the Trustee against the Issuer or any other guarantor, whether or not
such  claim,  remedy or right  arises in equity or under  contract,  statute  or
common law, including, without limitation, the right to take or receive from the
Issuer or any other guarantor, directly or indirectly, in cash or other property
or by set-off or in any other  manner,  payment or  security  on account of such
claim,  remedy or right,  unless and until all of the Indenture  Obligations and
all other amounts  payable under this Guarantee  shall have been paid in full in
cash.

          SECTION 13.8 Guarantee Is In Addition to Other Security.  This
Guarantee  shall  be in  addition  to and  not in  substitution  for  any  other
guarantees  or other  security  which the Trustee may now or  hereafter  hold in
respect of the Indenture  Obligations owing to the Trustee or the Holders by the
Issuer and  (except as may be  required  by law) the  Trustee  shall be under no
obligation to marshal in favor of the  Guarantor  any other  guarantees or other
security  or any moneys or other  assets  which the  Trustee  may be entitled to
receive or upon which the Trustee or the Holders may have a claim.

          SECTION 13.9 Release of Security  Interests.  Without limiting
the  generality  of the  foregoing  and  except as  otherwise  provided  in this
Indenture, the Guarantor hereby

                                                     
                                       65

<PAGE>



consents and agrees, to the fullest extent permitted by applicable law, that the
rights of the Trustee hereunder,  and the liability of the Guarantor  hereunder,
shall not be affected by any and all releases for any purpose of any collateral,
if any, from the Liens and security interests created by any collateral document
and that this Guarantee shall continue to be effective or be reinstated,  as the
case may be, if at any time any payment of any of the Indenture  Obligations  is
rescinded  or must  otherwise  be returned by the Trustee  upon the  insolvency,
bankruptcy  or  reorganization  of the Issuer or  otherwise,  all as though such
payment had not been made.

          SECTION 13.10 No Bar to Further Actions. Except as provided by
law, no action or proceeding  brought or instituted  under this Article Thirteen
and this  Guarantee and no recovery or judgment in pursuance  thereof shall be a
bar or defense to any further  action or  proceeding  which may be brought under
this  Article  Thirteen and this  Guarantee by reason of any further  default or
defaults  under Article  Thirteen and this Guarantee or in the payment of any of
the Indenture Obligations owing by the Issuer.

          SECTION 13.11 Failure to Exercise  Rights Shall Not Operate As
a Waiver; No Suspension of Remedies.  (a) No failure to exercise and no delay in
exercising,  on the  part of the  Trustee  or the  Holders,  any  right,  power,
privilege or remedy under this Article Thirteen and this Guarantee shall operate
as a waiver  thereof,  nor shall any  single or partial  exercise  of any right,
power,  privilege or remedy preclude any other or further exercise  thereof,  or
the exercise of any other right, powers,  privileges or remedies. The rights and
remedies  herein  provided for are cumulative and not exclusive of any rights or
remedies provided in law or equity.

          (b) Nothing contained in this Article Thirteen shall limit the
right of the  Trustee  or the  Holders  to take any  action  to  accelerate  the
maturity  of the Notes  pursuant  to  Article  Five or to pursue  any  rights or
remedies hereunder or under applicable law.

          SECTION  13.12  Release of  Guarantee.  Concurrently  with the
payment in full of all of the Indenture Obligations, then the Guarantor shall be
released from and relieved of its obligations under this Article Thirteen.  Upon
the  delivery by the Issuer to the Trustee of an Officers'  Certificate  and, if
requested  by the  Trustee,  an  Opinion  of  Counsel  to the  effect  that  the
transaction  giving rise to the release of this Guarantee was made by the Issuer
in accordance  with the provisions of this Indenture and the Notes,  the Trustee
shall execute any documents reasonably required in order to evidence the release
of the  Guarantor  from its  obligations  under  this  Guarantee.  If any of the
Indenture  Obligations are revived and reinstated  after the termination of this
Guarantee,  then all of the  obligations  of the Guarantor  under this Guarantee
shall be revived and  reinstated as if this  Guarantee  had not been  terminated
until such time as the Indenture Obligations are paid in full, and the Guarantor
shall enter into an amendment to this Guarantee,  reasonably satisfactory to the
Trustee, evidencing such revival and reinstatement.

          SECTION  13.13   Execution  of  Guarantee.   To  evidence  the
Guarantee,  the Guarantor  hereby  agrees to execute a notation  relating to the
Guarantee  substantially  in the form set forth in Exhibit A, to be  endorsed on
each Note  authenticated  and  delivered by the Trustee and that this  Indenture
shall be executed on behalf of the  Guarantor by its Chairman of the Board,  its
President or one of its Vice Presidents.  The signature of any of these officers
on the Notes may be manual or facsimile.

                                                  
                                       66

<PAGE>



          If an officer whose  signature is on this  Indenture no longer
holds that  office at the time the  Trustee  authenticates  a Note on which this
Guarantee is endorsed, such Guarantee shall be valid nevertheless.

          The Guarantor hereby agrees that the Guarantee shall remain in
full  force and  effect  notwithstanding  any  failure to include on each Note a
notation  relating to the  Guarantee.  The  delivery of any Note by the Trustee,
after the authentication thereof hereunder, shall constitute due delivery of the
Guarantee set forth in this Indenture on behalf of the Guarantor.

          SECTION 13.14 Guarantee Unsecured Unsubordinated  Indebtedness
of Guarantor.  The  indebtedness  represented  by this Guarantee is an unsecured
unsubordinated  obligation of the Guarantor and in all respects  shall rank pari
passu with all existing and future unsecured unsubordinated  indebtedness of the
Guarantor.


                                       67

<PAGE>



     IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed and delivered as of February 5, 1998.



               AERIAL COMMUNICATIONS, INC.,
                    as Issuer


               
               By:_________________________________________
                  Name:
                  Title:


               TELEPHONE AND DATA SYSTEMS, INC.,
                    as Guarantor


               By:_________________________________________
                  Name:
                  Title:


               THE FIRST NATIONAL BANK OF CHICAGO,
                    as Trustee


               
               By:________________________________________   
                  Name:
                  Title:



                                                      
                                       68

<PAGE>



                                                                       EXHIBIT A


                             [FORM OF FACE OF NOTE]

                              [Global Note Legend]


                  UNLESS  THIS   CERTIFICATE   IS  PRESENTED  BY  AN  AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION  ("DTC"),
NEW YORK,  NEW YORK,  TO THE ISSUER OR ITS AGENT FOR  REGISTRATION  OF TRANSFER,
EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS  REGISTERED IN THE NAME OF
CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF
DTC  (AND ANY  PAYMENT  IS MADE TO CEDE & CO.,  OR TO SUCH  OTHER  ENTITY  AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER
USE HEREOF FOR VALUE OR  OTHERWISE  BY OR TO ANY PERSON IS WRONGFUL  INASMUCH AS
THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

                  TRANSFERS OF THIS GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS IN
WHOLE,  BUT NOT IN PART,  TO NOMINEES  OF DTC OR TO A SUCCESSOR  THEREOF OR SUCH
SUCCESSOR'S  NOMINEE  AND  TRANSFERS  OF  PORTIONS  OF THIS GLOBAL NOTE SHALL BE
LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE  RESTRICTIONS  SET FORTH IN THE
INDENTURE REFERRED TO ON THE REVERSE HEREOF.*

                            [Restricted Note Legend]

                  "THIS  NOTE  (OR  ITS   PREDECESSOR)  HAS  BEEN  ISSUED  IN  A
         TRANSACTION EXEMPT FROM REGISTRATION UNDER THE UNITED STATES SECURITIES
         ACT OF 1933, AS AMENDED (THE  "SECURITIES  ACT"),  AND UNDER APPLICABLE
         STATE  SECURITIES  LAWS,  AND  THIS  NOTE MAY NOT BE  OFFERED,  SOLD OR
         OTHERWISE  TRANSFERRED  IN  THE  ABSENCE  OF  SUCH  REGISTRATION  OR AN
         APPLICABLE EXEMPTION  THEREFROM.  EACH PURCHASER OF THIS NOTE IS HEREBY
         NOTIFIED  THAT  THE  SELLER  OF THIS  SECURITY  MAY BE  RELYING  ON THE
         EXEMPTION  FROM THE  PROVISIONS  OF  SECTION  5 OF THE  SECURITIES  ACT
         PROVIDED BY RULE 144A THEREUNDER.

                  THE HOLDER OF THIS NOTE  AGREES FOR THE  BENEFIT OF THE ISSUER
         THAT (A)  THIS  NOTE  MAY BE  OFFERED,  RESOLD,  PLEDGED  OR  OTHERWISE
         TRANSFERRED,  ONLY (i) TO A PERSON WHOM THE SELLER REASONABLY  BELIEVES
         IS A QUALIFIED  INSTITUTIONAL  BUYER (AS DEFINED IN RULE 144A UNDER THE
         SECURITIES ACT) IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A,
         (ii) IN AN OFFSHORE  TRANSACTION IN ACCORDANCE  WITH RULE 904 UNDER THE
         SECURITIES
_______________

     * This legend should only be added if the Note is issued in global form.

                                       

                                                      

<PAGE>



         ACT,  (iii)  PURSUANT  TO AN  EXEMPTION  FROM  REGISTRATION  UNDER  THE
         SECURITIES  ACT PROVIDED BY RULE 144  THEREUNDER (IF AVAILABLE) OR (iv)
         PURSUANT TO AN EFFECTIVE  REGISTRATION  STATEMENT  UNDER THE SECURITIES
         ACT,  IN  EACH  OF  CASES  (i)  THROUGH  (iv) IN  ACCORDANCE  WITH  ANY
         APPLICABLE  SECURITIES LAWS OF ANY STATE OF THE UNITED STATES,  AND (B)
         THE HOLDER WILL, AND EACH SUBSEQUENT  HOLDER IS REQUIRED TO, NOTIFY ANY
         PURCHASER OF THIS NOTE FROM IT OF THE RESALE  RESTRICTIONS  REFERRED TO
         IN (A) ABOVE."

         ["IN  CONNECTION  WITH ANY  TRANSFER,  THE HOLDER  WILL  DELIVER TO THE
         REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER INFORMATION AS
         SUCH TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER
         COMPLIES WITH THE FOREGOING RESTRICTIONS.]**



























____________________

              ** Include  on a  Definitive  Note to be held by an  institutional
         "accredited  investor" (as defined in Rule 501(a), (1), (2), (3) or (7)
         under the Securities Act).

                                       A-2

                                                  
<PAGE>



                  FOR PURPOSES OF SECTIONS 1273 AND 1275 OF THE INTERNAL REVENUE
CODE OF 1986, AS AMENDED,  RELATING TO "ORIGINAL ISSUE DISCOUNT," THE ISSUE DATE
OF THIS NOTE IS FEBRUARY 5, 1998,  THE ISSUE PRICE FOR EACH $1,000 OF  PRINCIPAL
AMOUNT PAYABLE AT MATURITY IS $454.60, THE AMOUNT OF ORIGINAL ISSUE DISCOUNT FOR
EACH $1,000 OF PRINCIPAL AMOUNT PAYABLE AT MATURITY IS $545.40, AND THE YIELD TO
MATURITY IS 8.05% PER ANNUM, COMPOUNDED SEMI-ANNUALLY.


                           AERIAL COMMUNICATIONS, INC.

                     Fully and Unconditionally Guaranteed by
                        TELEPHONE AND DATA SYSTEMS, INC.


No.                                                CUSIP: 007655AA1

Issue Date:  February 5, 1998
Issue Price:  $454.60                              Original Issue Discount:
(for each $1,000 Principal                         $545.40 (for each $1,000
Amount at Maturity)                                Principal Amount at Maturity)

                       Series B Zero Coupon Note Due 2008


                  Aerial Communications,  Inc., a Delaware corporation, promises
to pay  to              or registered  assigns,  the  Principal  Amount  at
Maturity of                  Dollars ($_________) on February 1, 2008.

                  This Note shall not bear  interest  except as specified on the
other side of this Note. Original Issue Discount will accrue as specified on the
other side of this Note.

                  Additional  provisions of this Note are set forth on the other
side of this Note.


                                                AERIAL COMMUNICATIONS, INC.

                                                  by

[Seal]
                                                  ______________________________
                                                  Title:


                                                  ______________________________
                                                  Title:



                                       A-3

                                                   

<PAGE>



Dated:   February 5, 1998


TRUSTEE'S CERTIFICATE OF
         AUTHENTICATION

THE FIRST NATIONAL BANK OF CHICAGO

  as Trustee, certifies
  that this is one of the
  Notes referred to
  in the Indenture.

  by     ____________________
         Authorized Signatory


                                       A-4

                                                  
<PAGE>



                         [FORM OF REVERSE SIDE OF NOTE]

                           AERIAL COMMUNICATIONS, INC.

                     Fully and Unconditionally Guaranteed by

                        TELEPHONE AND DATA SYSTEMS, INC.

                       Series B Zero Coupon Note Due 2008


1.       Interest
         --------

                  This  Note  shall  not  bear  interest,  except  that  if  the
Principal  Amount at Maturity hereof or any portion of such Principal  Amount at
Maturity is not paid when due (whether upon acceleration pursuant to Section 5.1
of the Indenture, upon the date set for payment of the Redemption Price pursuant
to  paragraph 5 hereof or upon the stated  maturity of this Note),  then in each
such case the overdue amount shall bear interest at the yield to maturity on the
Notes, compounded semi-annually,  which interest,  including interest thereon at
the same rate, compounded  semi-annually (to the extent that the payment of such
interest shall be legally enforceable),  shall accrue from the date such overdue
amount  was  due to the  date of  payment  of such  amount,  including  interest
thereon,  has been made or duly provided for. All such interest shall be payable
on demand.

                  Original  Issue  Discount  (the  difference  between the Issue
Price and the  Principal  Amount at Maturity of the Note),  in the period during
which a Note  remains  outstanding,  shall  accrue  at  8.05%  per  annum,  on a
semi-annual bond equivalent basis using a 360-day year composed of twelve 30-day
months, commencing on the Issue Date of this Note.


2.       Method of Payment
         -----------------

                  Subject  to the terms and  conditions  of the  Indenture,  the
Issuer  will  make  payments  in  respect  of the Notes to the  persons  who are
registered  Holders  of  Notes at the  close of  business  on the  Business  Day
preceding the redemption  date or stated  maturity,  as the case may be. Holders
must  surrender  Notes to a Paying Agent to collect such  payments in respect of
the Notes.  The Issuer will pay cash amounts in money of the United  States that
at the time of payment is legal tender for payment of public and private  debts.
However, the Issuer may make such cash payments payable by check payable in such
money.

3.       Paying Agent and Registrar
         --------------------------

                  Initially, The First National Bank of Chicago (the "Trustee"),
will act as Paying  Agent and  Registrar.  The Issuer may appoint and change any
Paying Agent, Registrar or co-registrar without notice, other than notice to the
Trustee.  The  Issuer  or any  of its  domestically  incorporated  Wholly  Owned
Subsidiaries may act as Paying Agent, Registrar or co-registrar.

                                       A-5

                                               
<PAGE>





4.       Indenture
         ---------

                  The Issuer  issued the Notes  under an  Indenture  dated as of
February  5,  1998  (the  "Indenture"),  among the  Issuer,  Telephone  and Data
Systems,  Inc., an Iowa corporation (the "Guarantor") and the Trustee. The terms
of the Notes  include  those  stated in the  Indenture.  Capitalized  terms used
herein  and not  defined  herein  have  the  meanings  ascribed  thereto  in the
Indenture. The Notes are subject to all such terms, and Noteholders are referred
to the Indenture for a statement of those terms.

                  The  Notes are  unsecured  unsubordinated  obligations  of the
Issuer, ranking pari passu with all other unsecured unsubordinated  indebtedness
of the Issuer and limited to $219,975,000 aggregate Principal Amount at Maturity
(subject  to  Section  2.6 of the  Indenture).  The  Indenture  imposes  certain
limitations  on,  among  other  things,  the  creation  of  Secured  Debt by the
Guarantor and the  participation  by the Guarantor in certain Sale and Leaseback
transactions.


5.       Optional Redemption
         -------------------

                  No sinking fund is provided  for the Notes.  The Notes may not
be redeemed  prior to February 1, 2003.  On and after that date,  the Issuer may
redeem  the  Notes  in whole  or in part at any  time at the  Redemption  Prices
specified below.

                  The table below shows  Redemption  Prices of a Note per $1,000
Principal  Amount at Maturity on February 1, 2003, at each February 1 thereafter
prior to maturity and at maturity on February 1, 2008,  which prices reflect the
accrued  Original  Issue  Discount  calculated at each such date. The Redemption
Price of a Note redeemed  between such dates would include an additional  amount
reflecting  the  additional  Original  Issue  Discount  accrued  since  the next
preceding date in the table.


                                       A-6

                                                 

<PAGE>





                               (1)                 (2)                 (3)
                                                Original
                                                 Issue              Redemption
    Redemption                                 Discount at            Price
       Date                Issue Price            8.05%             (1) +(2)
    ----------             -----------         -----------      ----------------

February 1, 2003            $454.60             $219.30             $ 673.90

February 1, 2004             454.60              274.70               729.30

February 1, 2005             454.60              334.60               789.20

February 1, 2006             454.60              399.40               854.00

February 1, 2007             454.60              469.50               924.10

February 1, 2008             454.60              545.40              1000.00

6.       Notice of Redemption
         --------------------

                  Notice of  redemption  will be mailed at least 30 days but not
more  than 60 days  before  the  redemption  date to each  Holder of Notes to be
redeemed at the Holder's registered address.  Securities in denominations larger
than $1,000  Principal  Amount at  Maturity  may be redeemed in part but only in
integral  multiples of $1,000 Principal Amount at Maturity.  If money sufficient
to pay the  redemption  price  of all the  Notes  (or  portions  thereof)  to be
redeemed on the redemption  date is deposited with the Paying Agent on or before
the redemption  date and certain other  conditions  are satisfied,  on and after
such date  Original  Issue  Discount  ceases  to  accrue on such  Notes (or such
portions thereof) called for redemption.


7.       Guarantee
         ---------

                  Payment and  performance  of the Indenture  Obligations of the
Issuer in connection with the Indenture and the Notes are fully, unconditionally
and  absolutely  guaranteed  by the  Guarantor in  accordance  with the terms of
Article Thirteen of the Indenture.


8.       Denominations; Transfer; Exchange
         ---------------------------------

                  The  Notes  are  in   registered   form  without   coupons  in
denominations  of $1,000  Principal Amount at Maturity (or, in the case of Notes
sold to  institutional  "accredited  investors" as described in Rule  501(a)(1),
(2), (3) or (7) under the Securities Act in a transaction  intended to be exempt
from registration  under the Securities Act, minimum  denominations of $100,000)
and integral  multiples  of $1,000  Principal  Amount at Maturity.  A Holder may
transfer or exchange Notes in accordance  with the Indenture.  The Registrar may
require a Holder,  among other things,  to furnish  appropriate  endorsements or
transfer documents and to pay any taxes and fees required by law or permitted by
the  Indenture.  The Registrar need not register the transfer of or exchange any
Notes selected for redemption  (except,  in the case of a Note to be redeemed in
part,

                                       A-7

                                                 
<PAGE>



the portion of the Note not to be redeemed) or any Securities for a period of 15
days before a selection of Notes to be redeemed.


9.       Persons Deemed Owners
         ---------------------

                  The registered holder of this Note may be treated as the owner
of it for all purposes.  Owners of a beneficial interest in the Global Note will
not be considered the owners or Holders of any Note. So long as the  Depository,
or its  nominee,  is the  Holder of the  Global  Note,  the  Depository  or such
nominee, as the case may be, will be considered the sole owner and Holder of the
Notes  represented  by the Global Notes for all purposes under the Indenture and
this Note.


10.      Unclaimed Money
         ---------------

                  If money for the  payment  of any amount  with  respect to the
Notes remains unclaimed for two years, the Trustee or Paying Agent shall pay the
money back to the Issuer at its request unless the applicable abandoned property
law designates another person.  After any such payment,  Holders entitled to the
money must look only to the Issuer and not to the Trustee for payment.


11.      Defeasance
         ----------

                  Subject  to  certain  conditions,  the  Issuer at any time may
terminate  some or all of its  obligations  under the Notes and the Indenture if
the Issuer  deposits with the Trustee money or  Government  Obligations  for the
payment of the Principal Amount at Maturity on all the Notes.


12.      Amendment, Waiver
         -----------------

                  Subject to certain exceptions set forth in the Indenture,  (i)
the Indenture may be amended with the written consent of the Holders of at least
a majority in Principal Amount at Maturity Outstanding of the Notes and (ii) any
default or  noncompliance  with any  provision  may be waived  with the  written
consent of the Holders of a majority in Principal Amount at Maturity Outstanding
of the Notes. Subject to certain exceptions set forth in the Indenture,  without
the consent of any  Noteholder,  the Issuer,  the  Guarantor and the Trustee may
amend the Indenture to cure any ambiguity,  omission,  defect or  inconsistency,
provided that no such action  adversely  affects Holders of the Notes, or to add
guarantees  with  respect to the  Securities,  or to provide for  uncertificated
Notes in addition to or in place of  certificated  Notes,  or to add  additional
covenants, or to secure the Notes.


13.      Defaults and Remedies
         ---------------------

                  Under the Indenture, Events of Default include (a) default in 
any payment

                                       A-8

<PAGE>



of the  Principal  Amount at  Maturity,  Issue  Price,  accrued  Original  Issue
Discount or Redemption Price on the Notes when the same becomes due and payable;
(b)  failure on the part of the  Guarantor  or the  Issuer to comply  with other
agreements  in the Notes or in the  Indenture,  subject  to notice  and lapse of
time;  (c)  certain  accelerations  (including  failure  to pay within any grace
period after final maturity) of other indebtedness if the amount accelerated (or
so unpaid) equals or exceeds 2% of Consolidated Capitalization of the Guarantor;
(d) the Guarantee  ceases to be in full force and effect or the Guarantor or any
person acting on behalf of the Guarantor shall deny or disaffirm the Guarantor's
obligations  under  the  Guarantee;  or (e)  certain  events  of  bankruptcy  or
insolvency of the Guarantor or the Issuer.

                  If an Event of Default shall have occurred and be  continuing,
then,  unless the  principal  amount of all of the Notes  shall have  previously
become due and  payable,  either the  Trustee or the  Holders of at least 25% in
aggregate Principal Amount at Maturity of the Notes then Outstanding may declare
all the Notes to be immediately due and payable. Certain events of bankruptcy or
insolvency are Events of Default which will result in the Notes becoming due and
payable immediately upon the occurrence of such Events of Default.

                  Noteholders  may not enforce the Indenture or the Notes except
as provided in the Indenture. The Trustee may refuse to enforce the Indenture or
the Notes  unless it  receives  reasonable  indemnity  or  security.  Subject to
certain  limitations,  Holders of a majority in  aggregate  Principal  Amount at
Maturity  of the Notes at the time  Outstanding  may direct  the  Trustee in its
exercise of any trust or power. The Trustee may withhold from Noteholders notice
of any continuing  Default (except a Default in payment of amounts  specified in
clause  (a)  above)  if it  determines  that  withholding  notice  is  in  their
interests.


14.      Trustee Dealings with the Issuer
         --------------------------------

                  Subject  to  certain   limitations,   the  Trustee  under  the
Indenture,  in its  individual  or any other  capacity,  may become the owner or
pledgee of Notes and may otherwise deal with and collect  obligations owed to it
by the Issuer or its  affiliates  and may otherwise  deal with the Issuer or its
affiliates with the same rights it would have if it were not Trustee.


15.      No Recourse Against Others
         --------------------------

                  A director, officer, employee, stockholder or incorporator, as
such,  of the  Issuer  or the  Guarantor  shall not have any  liability  for any
obligations  of the Issuer or the Guarantor  under the Notes or the Indenture or
for any claim based on, in respect of or by reason of such  obligations or their
creation.  By  accepting a Note,  each  Noteholder  waives and releases all such
liability. The waiver and release are part of the consideration for the issue of
the Notes.



         

                                       A-9

                                                 
<PAGE>



16.       Authentication
          --------------

                  This Note shall not be valid until an authorized  signatory of
the Trustee (or an  authenticating  agent)  manually  signs the  certificate  of
authentication on the other side of this Note.


17.      Abbreviations
         -------------

                  Customary   abbreviations  may  be  used  in  the  name  of  a
Noteholder  or an  assignee,  such as TEN COM (= tenants in common),  TEN ENT (=
tenants by the entireties),  JT TEN (= joint tenants with rights of survivorship
and not as tenants in common), CUST (= custodian) and U/G/M/A (= Uniform Gift to
Minors Act).


18.      CUSIP Numbers
         -------------

                  Pursuant to a  recommendation  promulgated by the Committee on
Uniform Security  Identification  Procedures the Issuer has caused CUSIP numbers
to be printed on the Notes and has directed the Trustee to use CUSIP  numbers in
notices of redemption as a convenience to Noteholders. No representation is made
as to the  accuracy  of such  numbers  either  as  printed  on the  Notes  or as
contained  in any notice of  redemption  and  reliance may be placed only on the
other identification numbers placed thereon.


19.      Governing Law
         -------------

                  THIS NOTE SHALL BE GOVERNED BY, AND  CONSTRUED  IN  ACCORDANCE
WITH, THE LAWS OF THE STATE OF ILLINOIS,  EXCEPT AS MAY OTHERWISE BE REQUIRED BY
MANDATORY PROVISIONS OF LAW.

                  The Issuer will furnish to any Noteholder upon written request
and without charge to the Noteholder a copy of the Indenture which has in it the
text of this Note in larger type. Requests may be made to:


                                    Aerial Communications, Inc.
                                    8410 West Bryn Mawr Avenue
                                    Suite 1100
                                    Chicago, Illinois 60631

                                    Attention: Chief Financial Officer










                                      A-10

                                               
<PAGE>



                        FORM OF NOTATION ON NOTE RELATING
                                  TO GUARANTEE

             The Guarantor  (which term includes any successor  person under the
Indenture), has fully,  unconditionally and absolutely guaranteed, to the extent
set forth in the Indenture and subject to the provisions in the  Indenture,  the
complete and punctual  payment and  performance  by the Issuer of the  Indenture
Obligations in connection  with the Indenture and the Notes,  and further agrees
to pay any and all expenses (including,  without limitation, all court costs and
reasonable fees and  disbursements  of counsel) which may be paid or incurred by
the Trustee or the Holders in enforcing  their rights under the  Guarantee.  The
indebtedness  evidenced  by  the  Guarantees  is  an  unsecured   unsubordinated
obligation of the  Guarantor and in all respects  shall rank pari passu with all
existing and future unsecured unsubordinated indebtedness of the Guarantor.

             The obligations of the Guarantor to the Holders of Notes and to the
Trustee  pursuant to the  Guarantee and the Indenture are expressly set forth in
Article  Thirteen of the Indenture and reference is hereby made to the Indenture
for the precise terms of the  Guarantee.  Capitalized  terms used herein and not
defined herein have the meanings ascribed thereto in the Indenture.


TELEPHONE AND DATA
 SYSTEMS, INC.
                                                           [SEAL]


By________________________
Title:


Attest:___________________
       Title:

                                      A-11

                                            
<PAGE>



________________________________________________________________________________





                                 ASSIGNMENT FORM


    To assign this Note, fill in the form below:

    I or we assign and transfer this Note to

             (Print or type assignee's name, address and zip code)

             (Insert assignee's soc. sec. or tax I.D. No.)

             And  irrevocably  appoint                  agent  to transfer this
             Note on the books of the Issuer.  The agent may substitute  another
             to act for him.




________________________________________________________________________________




Date:__________________                 Your Signature:_________________________




________________________________________________________________________________
Sign exactly as your name appears on the other side of this Security.



Signature Guarantee:                    ________________________________________
                                       (Signature   must  be  guaranteed  by  an
                                       "eligible guarantor institution" that is,
                                       a bank,  stockbroker,  savings  and  loan
                                       association  or credit union  meeting the
                                       requirements  of  the  Registrar,   which
                                       requirements    include   membership   or
                                       participation in the Securities  Transfer
                                       Agents  Medallion  Program  ("STAMP")  or
                                       such other "signature  guarantee program"
                                       as may be  determined by the Registrar in
                                       addition  to,  or  in  substitution  for,
                                       STAMP.)

                                      A-12

                                              

<PAGE>



          CERTIFICATE TO BE DELIVERED UPON EXCHANGE OR REGISTRATION OF
                           TRANSFER OF RESTRICTED NOTE

This  certificate  relates to $_________  Principal  Amount at Maturity of Notes
held in (check applicable space) ____ book-entry or _____ definitive form by the
undersigned.

The undersigned (check one box below):

|_| has  requested  the Trustee by written  order to deliver in exchange for its
    beneficial  interest  in the Global  Note held by the  Depository  a Note or
    Notes in  definitive,  registered  form of authorized  denominations  and an
    aggregate  principal amount equal to its beneficial  interest in such Global
    Note (or the portion thereof indicated above); or

|_| has  requested  the Trustee by written  order to  exchange  or register  the
    transfer of a Note or Notes.

The undersigned confirms that such Notes are being:

CHECK ONE BOX BELOW:

             (1)      |_|     acquired for the undersigned's own account, 
                              without transfer (in satisfaction of Section 2.5
                              (a)(ii)(A) of the Indenture); or

             (2)      |_|     transferred to the Issuer; or

             (3)      |_|     transferred pursuant to and in compliance with 
                              Rule 144A under the Securities Act of 1933, as 
                              amended; or

             (4)      |_|     transferred pursuant to and in compliance with 
                              Regulation S under the Securities Act of 1933, as 
                              amended; or

             (5)      |_|     transferred pursuant to and in compliance with 
                              Rule 144 under the Securities Act of 1933, as 
                              amended; or

             (6)      |_|     transferred   pursuant   to   an   effective
                              registration statement under the Securities Act of
                              1933, as amended.






Unless one of the boxes is checked,  the Trustee  will refuse to register any of
the Notes evidenced by this certificate in the name of any person other than the
registered  holder thereof;  provided,  however,  that if box (4), (5) or (6) is
checked, the Issuer or the Trustee may require evidence reasonably  satisfactory
to them as to the compliance  with the  restrictions  set forth in the legend on
the face of this Security.


                                      A-13

 
<PAGE>





                                                ________________________________
                                                         Signature

Signature Guarantee:
                                     ___________________________________________
                                     (Signature   must  be   guaranteed   by  an
                                     "eligible guarantor institution",  that is,
                                     a  bank,   stockbroker,   saving  and  loan
                                     association  or credit  union  meeting  the
                                     requirements   of  the   Registrar,   which
                                     requirements    include    membership    or
                                     participation  in the  Securities  Transfer
                                     Agents Medallion  Program ("STAMP") or such
                                     other signature guarantee program as may be
                                     determined by the Registrar in addition to,
                                     or in substitution for, STAMP.)
                                   



                                      A-14

                                                

<PAGE>



                         [TO BE ATTACHED TO GLOBAL NOTE]

                SCHEDULE OF INCREASES OR DECREASES IN GLOBAL NOTE

          The  following  increases  or  decreases in this Global Note have been
made:

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

           Amount of          Amount of         Principal Amount   Signature 
           decrease           increase in       at Maturity of     of authorized
           in Principal       Principal Amount  this Global Note   signatory of
           Amount at          at Maturity       following such     Trustee or 
Date of    Maturity of this   of this           decrease or        Notes  
Exchange   Global Note        Global Note       increase           Custodian


































                                      A-15

 
<PAGE>

































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


                                      A-16


<PAGE>



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