EXHIBIT 4.4




                   QWEST COMMUNICATIONS INTERNATIONAL INC.,

                                    Issuer

                                      to

                            BANKERS TRUST COMPANY,

                                    Trustee



                             ____________________



                                   Indenture


                          Dated as of ________, 1997


                             _____________________



                                 $250,000,000


                      10 % Series B Senior Notes Due 2007


                                  




                                                                    

 
                               TABLE OF CONTENTS

                                                                   PAGE

PARTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
RECITALS OF THE COMPANY . . . . . . . . . . . . . . . . . . . . .  1


                                  ARTICLE ONE

                       DEFINITIONS AND OTHER PROVISIONS
                            OF GENERAL APPLICATION

SECTION 101.     Definitions. . . . . . . . . . . . . . . . . . .  1
                 Acquired Debt. . . . . . . . . . . . . . . . . .  2
                 Act. . . . . . . . . . . . . . . . . . . . . . .  2
                 Affiliate. . . . . . . . . . . . . . . . . . . .  2
                 Agent Member . . . . . . . . . . . . . . . . . .  2
                 Asset Disposition. . . . . . . . . . . . . . . .  2
                 Attributable Value . . . . . . . . . . . . . . .  3
                 Board of Directors . . . . . . . . . . . . . . .  3
                 Board Resolution . . . . . . . . . . . . . . . .  3
                 Business Day . . . . . . . . . . . . . . . . . .  3
                 Capital Lease Obligation . . . . . . . . . . . .  3
                 Capital Stock. . . . . . . . . . . . . . . . . .  4
                 Cash Equivalents . . . . . . . . . . . . . . . .  4
                 Change of Control. . . . . . . . . . . . . . . .  4
                 Commission . . . . . . . . . . . . . . . . . . .  4
                 Common Stock . . . . . . . . . . . . . . . . . .  4
                 Company. . . . . . . . . . . . . . . . . . . . .  5
                 Company Order. . . . . . . . . . . . . . . . . .  5
                 Company Request. . . . . . . . . . . . . . . . .  5
                 Consolidated Capital Ratio . . . . . . . . . . .  5
                 Consolidated Cash Flow Available for 
                  Fixed Charges. . . . . . . . . . . . . . . . ..  5
                 Consolidated Income Tax Expense. . . . . . . . .  5
                 Consolidated Interest Expense. . . . . . . . . .  5
                 Consolidated Net Income. . . . . . . . . . . . .  6
                 Consolidated Net Worth . . . . . . . . . . . . .  6
                 Consolidated Tangible Assets . . . . . . . . . .  6
                 Continuing Director. . . . . . . . . . . . . . .  7
                 Corporate Trust Office . . . . . . . . . . . . .  7
                 Corporation. . . . . . . . . . . . . . . . . . .  7
                 Credit Facilities. . . . . . . . . . . . . . . .  7
                 Debt . . . . . . . . . . . . . . . . . . . . . .  7
                 Debt Securities. . . . . . . . . . . . . . . . .  8
                 Default. . . . . . . . . . . . . . . . . . . . .  8
                 Defaulted Interest . . . . . . . . . . . . . . .  8
                 Depository . . . . . . . . . . . . . . . . . . .  8
                 Designation. . . . . . . . . . . . . . . . . . .  8
                 Designation Amount . . . . . . . . . . . . . . .  8
                 Disqualified Stock . . . . . . . . . . . . . . .  8
                 Eligible Institution . . . . . . . . . . . . . .  9
                 Eligible Receivables . . . . . . . . . . . . . .  9
                 Event of Default . . . . . . . . . . . . . . . .  9
                 Exchange Act . . . . . . . . . . . . . . . . . .  9
                 Exchange Securities. . . . . . . . . . . . . . .  9
                 Expiration Date. . . . . . . . . . . . . . . . .  9
__________________________

     Note:  This table of contents shall not, for any purpose, be deemed to be a
part of the Indenture.

 
                                      ii

                                                                   PAGE

                 Fair Market Value. . . . . . . . . . . . . . . . .  9
                 Federal Bankruptcy Code. . . . . . . . . . . . . .  9
                 Global Security. . . . . . . . . . . . . . . . . .  9
                 Government Securities. . . . . . . . . . . . . . .  9
                 Group. . . . . . . . . . . . . . . . . . . . . . .  9
                 Guarantee. . . . . . . . . . . . . . . . . . . . .  9
                 Guarantor. . . . . . . . . . . . . . . . . . . . . 10
                 Holder . . . . . . . . . . . . . . . . . . . . . . 10
                 Incur. . . . . . . . . . . . . . . . . . . . . . . 10
                 Indenture. . . . . . . . . . . . . . . . . . . . . 10
                 Indenture Obligations. . . . . . . . . . . . . . . 10
                 Initial Purchasers . . . . . . . . . . . . . . . . 10
                 Interest Payment Date. . . . . . . . . . . . . . . 11
                 Interest Rate or Currency Protection Agreement . . 11
                 Investment . . . . . . . . . . . . . . . . . . . . 11
                 Lien . . . . . . . . . . . . . . . . . . . . . . . 11
                 Maturity . . . . . . . . . . . . . . . . . . . . . 11
                 Net Available Proceeds . . . . . . . . . . . . . . 11
                 Notice of Default. . . . . . . . . . . . . . . . . 12
                 Offer. . . . . . . . . . . . . . . . . . . . . . . 12
                 Offer to Purchase. . . . . . . . . . . . . . . . . 12
                 Officers' Certificate. . . . . . . . . . . . . . . 14
                 Old Securities . . . . . . . . . . . . . . . . . . 14
                 Opinion of Counsel . . . . . . . . . . . . . . . . 14
                 Outstanding. . . . . . . . . . . . . . . . . . . . 14
                 Paying Agent . . . . . . . . . . . . . . . . . . . 15
                 Permitted Holders. . . . . . . . . . . . . . . . . 15
                 Permitted Interest Rate or Currency Protection     
                   Agreement. . . . . . . . . . . . . . . . . . . . 16
                 Permitted Investments. . . . . . . . . . . . . . . 16
                 Permitted Joint Venture. . . . . . . . . . . . . . 16
                 Permitted Liens. . . . . . . . . . . . . . . . . . 16
                 Permitted Telecommunications Capital Asset         
                   Disposition. . . . . . . . . . . . . . . . . . . 17
                 Person . . . . . . . . . . . . . . . . . . . . . . 17
                 Physical Security. . . . . . . . . . . . . . . . . 17
                 Predecessor Security . . . . . . . . . . . . . . . 17
                 Preferred Dividends. . . . . . . . . . . . . . . . 17
                 Preferred Stock. . . . . . . . . . . . . . . . . . 18
                 Private Placement Legend . . . . . . . . . . . . . 18
                 Public Equity Offering . . . . . . . . . . . . . . 18
                 Purchase Amount. . . . . . . . . . . . . . . . . . 18
                 Purchase Date. . . . . . . . . . . . . . . . . . . 18
                 Purchase Money Debt. . . . . . . . . . . . . . . . 18
                 Purchase Price . . . . . . . . . . . . . . . . . . 18
                 Rating Decline . . . . . . . . . . . . . . . . . . 18
                 Receivables. . . . . . . . . . . . . . . . . . . . 18
                 Receivables Sale . . . . . . . . . . . . . . . . . 18
                 Redemption Date. . . . . . . . . . . . . . . . . . 18
                 Redemption Price . . . . . . . . . . . . . . . . . 19
                 Regular Record Date. . . . . . . . . . . . . . . . 19
                 Related Person . . . . . . . . . . . . . . . . . . 19
                 Responsible Officer. . . . . . . . . . . . . . . . 19
                 Restricted Payment . . . . . . . . . . . . . . . . 19
                 Restricted Subsidiary. . . . . . . . . . . . . . . 19
                 Restricted Subsidiary Guarantee. . . . . . . . . . 19
                 Revocation . . . . . . . . . . . . . . . . . . . . 19
                 Sale and Leaseback Transaction . . . . . . . . . . 20
                 Securities . . . . . . . . . . . . . . . . . . . . 20

 
                                      iii

                                                                   PAGE

                 Securities Act . . . . . . . . . . . . . . . . . 20
                 Security Register. . . . . . . . . . . . . . . . 20
                 Security Registrar . . . . . . . . . . . . . . . 20
                 Special Record Date. . . . . . . . . . . . . . . 20
                 Stated Maturity. . . . . . . . . . . . . . . . . 20
                 Strategic Investor . . . . . . . . . . . . . . . 20
                 Subordinated Debt. . . . . . . . . . . . . . . . 20
                 Subsidiary . . . . . . . . . . . . . . . . . . . 21
                 Telecommunications Assets. . . . . . . . . . . . 21
                 Telecommunications Business. . . . . . . . . . . 21
                 Trust Indenture Act. . . . . . . . . . . . . . . 21
                 TIA. . . . . . . . . . . . . . . . . . . . . . . 21
                 Trustee. . . . . . . . . . . . . . . . . . . . . 22
                 Unrestricted Subsidiary. . . . . . . . . . . . . 22
                 Vice President . . . . . . . . . . . . . . . . . 22
                 Voting Stock . . . . . . . . . . . . . . . . . . 22
                 Wholly Owned Subsidiary. . . . . . . . . . . . . 22
SECTION 102.     Compliance Certificates and Opinions . . . . . . 22
SECTION 103.     Form of Documents Delivered to Trustee . . . . . 23
SECTION 104.     Acts of Holders. . . . . . . . . . . . . . . . . 23
SECTION 105.     Notices, etc., to Trustee and Company. . . . . . 25
SECTION 106.     Notice to Holders; Waiver. . . . . . . . . . . . 25
SECTION 107.     Effect of Headings and Table of Contents . . . . 26
SECTION 108.     Successors and Assigns . . . . . . . . . . . . . 26
SECTION 109.     Separability Clause. . . . . . . . . . . . . . . 26
SECTION 110.     Benefits of Indenture. . . . . . . . . . . . . . 26
SECTION 111.     Governing Law. . . . . . . . . . . . . . . . . . 26
SECTION 112.     Conflict with Trust Indenture Act. . . . . . . . 26
SECTION 113.     Legal Holidays . . . . . . . . . . . . . . . . . 27
SECTION 114.     No Personal Liability of Directors, Officers,    
                   Employees and Stockholders . . . . . . . . . . 27
SECTION 115.     Independence of Covenants. . . . . . . . . . . . 27
SECTION 116.     Exhibits . . . . . . . . . . . . . . . . . . . . 27
SECTION 117.     Counterparts . . . . . . . . . . . . . . . . . . 27
SECTION 118.     Duplicate Originals  . . . . . . . . . . . . . . 28

                                  ARTICLE TWO

                                SECURITY FORMS

SECTION 201.     Forms Generally. . . . . . . . . . . . . . . . . 28
                                                                  
                                                                  
                                 ARTICLE THREE                    
                                                                  
                                THE SECURITIES                    
                                                                  
SECTION 301.     Title and Terms. . . . . . . . . . . . . . . . . 28
SECTION 302.     Denominations. . . . . . . . . . . . . . . . . . 29
SECTION 303.     Execution, Authentication, Delivery and Dating . 29
SECTION 304.     Temporary Securities . . . . . . . . . . . . . . 31
SECTION 305.     Registration, Registration of Transfer and       
                 Exchange.........................................32
SECTION 306.     Mutilated, Destroyed, Lost and Stolen Securities.33
SECTION 307.     Payment of Interest; Interest Rights Preserved...34
SECTION 308.     Persons Deemed Owners . . . . . . . . . . . .....35
SECTION 309.     Cancellation. . . . . . . . . . . . . . . . .....35
SECTION 310.     Computation of Interest . . . . . . . . . . .....36

 
                                      iv

                                                                   PAGE

SECTION 311.     CUSIP Number. . . . . . . . . . . . . . . . . . . 36
SECTION 312.     Book-Entry Provisions for Global Securities. . .. 36
SECTION 313.     [omitted] . . . . . . . . . . . . . . . . . . . . 37
                                                                   
                                 ARTICLE FOUR                      
                                                                   
                          SATISFACTION AND DISCHARGE               
                                                                   
SECTION 401.     Satisfaction and Discharge of Indenture . . . . . 40
SECTION 402.     Application of Trust Money. . . . . . . . . . . . 41
                                                                   
                                 ARTICLE FIVE                      
                                                                   
                                   REMEDIES                        
                                                                   
SECTION 501.     Events of Default . . . . . . . . . . . . . . . . 42
SECTION 502.     Acceleration of Maturity; Rescission and          
                   Annulment. . . . . . . . . . . . . . . . . . .. 43
SECTION 503.     Collection of Indebtedness and Suits for          
                   Enforcement by Trustee. . . . . . . . . . . . . 45
SECTION 504.     Trustee May File Proofs of Claim. . . . . . . . . 45
SECTION 505.     Trustee May Enforce Claims Without Possession     
                   of Securities. . . . . . . . . . . . . . . . .. 46
SECTION 506.     Application of Money Collected. . . . . . . . . . 46
SECTION 507.     Limitation on Suits . . . . . . . . . . . . . . . 47
SECTION 508.     Unconditional Right of Holders to Receive         
                   Principal, Premium and Interest . . . . . . . . 48
SECTION 509.     Restoration of Rights and Remedies. . . . . . . . 48
SECTION 510.     Rights and Remedies Cumulative. . . . . . . . . . 48
SECTION 511.     Delay or Omission Not Waiver. . . . . . . . . . . 48
SECTION 512.     Control by Holders. . . . . . . . . . . . . . . . 49
SECTION 513.     Waiver of Past Defaults . . . . . . . . . . . . . 49
SECTION 514.     Waiver of Stay or Extension Laws. . . . . . . . . 49
                                                                   
                                  ARTICLE SIX                      
                                                                   
                                  THE TRUSTEE                      
                                                                   
SECTION 601.     Certain Duties and Responsibilities . . . . . . . 50
SECTION 602.     Notice of Default . . . . . . . . . . . . . . . . 51
SECTION 603.     Certain Rights of Trustee . . . . . . . . . . . . 51
SECTION 604.     Trustee Not Responsible for Recitals or Issuance  
                   of Securities. . . . . . . . . . . . . . . . .. 53
SECTION 605.     May Hold Securities . . . . . . . . . . . . . . . 53
SECTION 606.     Money Held in Trust . . . . . . . . . . . . . . . 53
SECTION 607.     Compensation and Reimbursement. . . . . . . . . . 53
SECTION 608.     Corporate Trustee Required; Eligibility;          
                   Conflicting Interests. . . . . . . . . . . . .. 54
SECTION 609.     Resignation and Removal; Appointment              
                   of Successor. . . . . . . . . . . . . . . . . . 55
SECTION 610.     Acceptance of Appointment by Successor. . . . . . 56
SECTION 611.     Merger, Conversion, Consolidation or Succession   
                   to Business. . . . . . . . . . . . . . . . . .. 56
                                                                   
                                 ARTICLE SEVEN                     
                                                                   
               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY   
                                                                   
SECTION 701.     Disclosure of Names and Addresses of Holders. . . 57
SECTION 702.     Reports by Trustee. . . . . . . . . . . . . . . . 57
SECTION 703.     Reports by Company. . . . . . . . . . . . . . . . 57

 
                                       v

                                                                   PAGE
                                 ARTICLE EIGHT

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 801.     Company May Consolidate, etc., Only on Certain
                   Terms. . . . . . . . . . . . . . . . . . . . . ..58
SECTION 802.     Successor Substituted . . . . . . . . . . . . . . .59

                                 ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

SECTION 901.     Supplemental Indentures Without Consent of
                   Holders. . . . . . . . . . . . . . . . . . . . . 59
SECTION 902.     Supplemental Indentures with Consent of
                   Holders. . . . . . . . . . . . . . . . . . . . ..60
SECTION 903.     Execution of Supplemental Indentures. . . . . . . .61
SECTION 904.     Effect of Supplemental Indentures . . . . . . . . .61
SECTION 905.     Conformity with Trust Indenture Act . . . . . . . .61
SECTION 906.     Reference in Securities to Supplemental
                   Indentures. . . . . . . . . . . . . . . . . . . .61
SECTION 907.     Notice of Supplemental Indentures . . . . . . . . .62

                                  ARTICLE TEN

                                   COVENANTS

SECTION 1001.    Payment of Principal, Premium, if Any, and
                   Interest. . . . . . . . . . . . . . . . . . . . .62
SECTION 1002.    Maintenance of Office or Agency . . . . . . . . . .62
SECTION 1003.    Money for Security Payments to Be Held in Trust. ..63
SECTION 1004.    Corporate Existence . . . . . . . . . . . . . . . .64
SECTION 1005.    Payment of Taxes and Other Claims . . . . . . . . .64
SECTION 1006.    Maintenance of Properties . . . . . . . . . . . . .65
SECTION 1007.    Insurance . . . . . . . . . . . . . . . . . . . . .65
SECTION 1008.    Provision of Financial Statements . . . . . . . . .65
SECTION 1009.    Statement by Officers as to Default . . . . . . . .65
SECTION 1010.    Purchase of Securities upon Change of Control. . ..66
SECTION 1011.    Limitation on Consolidated Debt . . . . . . . . . .67
SECTION 1012.    Limitation on Debt and Preferred Stock of
                   Restricted Subsidiaries. . . . . . . . . . . . ..69
SECTION 1013.    Limitation on Restricted Payments . . . . . . . . .71
SECTION 1014.    Limitation on Dividend and Other Payment
                   Restrictions Affecting Restricted Subsidiaries. .73
SECTION 1015.    Limitation on Liens . . . . . . . . . . . . . . . .74
SECTION 1016.    Limitation on Issuances of Certain Guarantees by,
                   and Debt Securities of, Restricted Subsidiaries..75
SECTION 1017.    Limitation on Sale and Leaseback Transactions. . ..75
SECTION 1018.    Limitation on Asset Dispositions. . . . . . . . . .75
SECTION 1019.    Limitation on Issuances and Sales of Capital
                   Stock of Restricted Subsidiaries. . . . . . . . .76
SECTION 1020.    Transactions with Affiliates and Related Persons. .77
SECTION 1021.    Limitation on Designations of Unrestricted
                   Subsidiaries. . . . . . . . . . . . . . . . . . .77
SECTION 1022.    No Repayment of Existing Parent Company
                   Advances with the Proceeds of the Securities. . .78
SECTION 1023.    Waiver of Certain Covenants . . . . . . . . . . . .79
SECTION 1024.    Trustee Not to Monitor Performance. . . . . . . . .79

                                ARTICLE ELEVEN

                           REDEMPTION OF SECURITIES

SECTION 1101.    Right of Redemption . . . . . . . . . . . . . . . .79

 
                                      vi

                                                                   PAGE

SECTION 1102.    Applicability of Article. . . . . . . . . . 79
SECTION 1103.    Election to Redeem; Notice to Trustee . . . 79
SECTION 1104.    Selection by Trustee of Securities to Be    
                   Redeemed. . . . . . . . . . . . . . . . . 80
SECTION 1105.    Notice of Redemption. . . . . . . . . . . . 80
SECTION 1106.    Deposit of Redemption Price . . . . . . . . 81
SECTION 1107.    Securities Payable on Redemption Date . . . 81
SECTION 1108.    Securities Redeemed in Part . . . . . . . . 81

                                ARTICLE TWELVE

                      DEFEASANCE AND COVENANT DEFEASANCE

SECTION 1201.    Company's Option to Effect Defeasance or
                   Covenant Defeasance. . . . . . . . . . .. 82
SECTION 1202.    Defeasance and Discharge. . . . . . . . . . 82
SECTION 1203.    Covenant Defeasance . . . . . . . . . . . . 83
SECTION 1204.    Conditions to Defeasance or Covenant 
                   Defeasance. . . . . . . . . . . . . . . . 83 
SECTION 1205.    Deposited Money and Government Securities to
                   Be Held in Trust; Other Miscellaneous
                   Provisions . . . . . . . . . . . . . . .. 84
SECTION 1206.    Reinstatement . . . . . . . . . . . . . . . 85

TESTIMONIUM. . . . . . . . . . . . . . . . . . . . . . . . . 86
                                                                    
SIGNATURES AND SEALS . . . . . . . . . . . . . . . . . . . . 86


EXHIBIT A - Form of Security


                    QWEST COMMUNICATIONS INTERNATIONAL INC.

              RECONCILIATION AND TIE BETWEEN TRUST INDENTURE ACT
                          OF 1939 AND THIS INDENTURE


                                 

TRUST INDENTURE
  ACT SECTION                                               INDENTURE
Section

(S) 310(a)(1)  . . . . . . . . . . . . . . . . . . . . . .  608
       (a)(2)  . . . . . . . . . . . . . . . . . . . . . .  608
       (a)(3)  . . . . . . . . . . . . . . . . . . . . . .  N/A
       (a)(4)  . . . . . . . . . . . . . . . . . . . . . .  N/A
       (b)     . . . . . . . . . . . . . . . . . . . . . .  608(b)
(S) 311(a)     . . . . . . . . . . . . . . . . . . . . . .  605
       (b)     . . . . . . . . . . . . . . . . . . . . . .  605
(S) 312(a)     . . . . . . . . . . . . . . . . . . . . . .  701
       (b)     . . . . . . . . . . . . . . . . . . . . . .  701
       (c)     . . . . . . . . . . . . . . . . . . . . . .  701
__________________________

     Note:  This reconciliation and tie shall not, for any purpose, be deemed to
            be a part of the Indenture.

 
                                      vii


(S) 313(a)     . . . . . . . . . . . . . . . . . . . . . .   702
       (a)(4)  . . . . . . . . . . . . . . . . . . . . . .   702
       (b)     . . . . . . . . . . . . . . . . . . . . . .   702
       (c)     . . . . . . . . . . . . . . . . . . . . . .   702
       (d)     . . . . . . . . . . . . . . . . . . . . . .   702
(S) 314(a)     . . . . . . . . . . . . . . . . . . . . . .   703
       (b)     . . . . . . . . . . . . . . . . . . . . . .   N/A
       (c)(1)  . . . . . . . . . . . . . . . . . . . . . .   102
       (c)(2)  . . . . . . . . . . . . . . . . . . . . . .   102
       (c)(3)  . . . . . . . . . . . . . . . . . . . . . .   N/A
       (d)     . . . . . . . . . . . . . . . . . . . . . .   N/A
       (e)     . . . . . . . . . . . . . . . . . . . . . .   102
(S) 315(a)     . . . . . . . . . . . . . . . . . . . . . .   601
       (b)     . . . . . . . . . . . . . . . . . . . . . .   601
       (c)     . . . . . . . . . . . . . . . . . . . . . .   601
       (d)     . . . . . . . . . . . . . . . . . . . . . .   601
       (e)     . . . . . . . . . . . . . . . . . . . . . .   601
(S) 316(a)(last                                           
      sentence). . . . . . . . . . . . . . . . . . . . . .   101("Outstanding") 
       (a)(1)(A) . . . . . . . . . . . . . . . . . . . . .   502, 512
       (a)(1)(B) . . . . . . . . . . . . . . . . . . . . .   513
       (a)(2)    . . . . . . . . . . . . . . . . . . . . .   N/A
       (b)       . . . . . . . . . . . . . . . . . . . . .   508
       (c)       . . . . . . . . . . . . . . . . . . . . .   104(d)
(S) 317(a)(1)  . . . . . . . . . . . . . . . . . . . . . .   503
       (a)(2)    . . . . . . . . . . . . . . . . . . . . .   504
       (b)       . . . . . . . . . . . . . . . . . . . . .   1003
(S) 318(a)     . . . . . . . . . . . . . . . . . . . . . .   111

Note:  This reconciliation and tie shall not, for any purpose, be deemed to be a
part of this Indenture.

 
            INDENTURE, dated as of ______, 1997 between Qwest Communications
International Inc., a corporation duly organized and existing under the laws of
the State of Delaware (herein called the "Company"), having its principal office
at 555 Seventeenth Street, Denver, Colorado 80202, and Bankers Trust Company, a
New York banking corporation, as Trustee (herein called the "Trustee").


                            RECITALS OF THE COMPANY

            The Company has duly authorized the creation of an issue of 10 %
Series B Senior Notes Due 2007 (herein called the "Exchange Securities"), of
substantially the tenor and amount hereinafter set forth, and to provide
therefor the Company has duly authorized the execution and delivery of this
Indenture.  The Exchange Securities are being issued in connection with an offer
by the Company to exchange its 10 % Senior Notes Due 2007 (herein called the
"Old Securities") for the Exchange Securities.  The Exchange Securities and the
Old Securities are  considered collectively to be a single class for all
purposes under this Indenture, including, without limitation, waivers,
amendments, redemptions and Offers to Purchase, and are referred to collectively
as the "Securities."

            All things necessary have been done to make the Securities, when
executed by the Company and authenticated and delivered hereunder and duly
issued by the Company, the valid obligations of the Company and to make this
Indenture a valid agreement of each of the Company and the Trustee, in
accordance with their and its terms.

            NOW, THEREFORE, THIS INDENTURE WITNESSETH:

            For and in consideration of the premises and the purchase of the
Securities by the Holders thereof, it is mutually covenanted and agreed, for the
equal and proportionate benefit of all Holders of the Securities, as follows:


                           ARTICLE ONE

                 DEFINITIONS AND OTHER PROVISIONS
                      OF GENERAL APPLICATION

       SECTION 101.  Definitions.

       For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

       (a)  the terms defined in this Article have the meanings assigned
  to them in this Article, and include the plural as well as the singular;

       (b)  all other terms used herein which are defined in the Trust
  Indenture Act, either directly or by reference therein, have the meanings
  assigned to them therein, and the terms "cash transaction" and
  "self-liquidating paper", as used in TIA Section 311, shall have the
  meanings assigned to them in the rules of the Commission adopted under the
  Trust Indenture Act;

       (c)  all accounting terms not otherwise defined herein have the
  meanings assigned to them in accordance with generally accepted accounting
  principles, and, except as otherwise herein expressly provided, the term
  "generally accepted accounting principles" with respect to any computation
  required or permitted hereunder shall mean such accounting principles as
  are generally accepted at the date of such computation;

                                       1

 
       (d)  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, paragraph or other subdivision; and

       (e)  unless otherwise indicated, references to Articles, Sections,
  paragraphs or other subdivisions are references to such Articles,
  Sections, paragraphs or other subdivisions of this Indenture.

       "Acquired Debt" means, with respect to any specified Person, (i)
Debt of any other Person existing at the time such Person merges with or into or
consolidates with or becomes a Subsidiary of such specified Person and (ii) Debt
secured by a Lien encumbering any asset acquired by such specified Person, which
Debt was not incurred in anticipation of, and was outstanding prior to, such
merger, consolidation or acquisition.

       "Act", when used with respect to any Holder, has the meaning
specified in Section 104.

       "Affiliate" of any Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such Person.  For the purposes of this definition, "control" when
used with respect to any Person means the power to direct the management and
policies of such Person, directly or indirectly, whether through the ownership
of voting securities, by contract or otherwise; and the terms "controlling" and
"controlled" have meanings correlative to the foregoing.

       "Agent Member" has the meaning specified in Section 312.

       "Asset Disposition" means any transfer, conveyance, sale, lease or
other disposition by the Company or any Restricted Subsidiary in one or more
related transactions occurring within any 12-month period (including a
consolidation or merger or other sale of any such Restricted Subsidiary with,
into or to another Person in a transaction in which such Restricted Subsidiary
ceases to be a Restricted Subsidiary of the Company, but excluding a disposition
by a Restricted Subsidiary to the Company or a Restricted Subsidiary or by the
Company to a Restricted Subsidiary) of (i) shares of Capital Stock or other
ownership interests of a Restricted Subsidiary (other than as permitted by
clauses (iii), (iv) and (v) of Section 1019), (ii) substantially all of the
assets of the Company or any Restricted Subsidiary representing a division or
line of business or (iii) other assets or rights of the Company or any
Restricted Subsidiary outside of the ordinary course of business (excluding any
transfer, conveyance, sale, lease or other disposition of equipment that is
obsolete or no longer used by or useful to the Company, provided that the
Company has delivered to the Trustee an Officers' Certificate stating that such
criteria are satisfied); provided in each case that the aggregate consideration
for such transfer, conveyance, sale, lease or other disposition is equal to
$500,000 or more in any 12-month period and provided further that the following
shall not be Asset Dispositions:  (x) Permitted Telecommunications Capital Asset
Dispositions, (y) exchanges of Telecommunications Assets for other
Telecommunications Assets where the Fair Market Value of the Telecommunications
Assets received is at least equal to the Fair Market Value of the
Telecommunications Assets disposed of or, if less, the difference is received in
cash and such cash is Net Available Proceeds and (z) Liens permitted to be
Incurred pursuant to the second paragraph of Section 1015.

       "Attributable Value" means, as to any particular lease under which
any Person is at the time liable other than a Capital Lease Obligation, and at
any date as of which the amount thereof is to be determined, the total net
amount of rent required to be paid by such Person under such lease during the
initial term thereof as determined in accordance with generally accepted
accounting principles, discounted from the last date of such initial term to the

                                       2

 
date of determination at a rate per annum equal to the discount rate which would
be applicable to a Capital Lease Obligation with like term in accordance with
generally accepted accounting principles.  The net amount of rent required to be
paid under any such lease for any such period shall be the aggregate amount of
rent payable by the lessee with respect to such period after excluding amounts
required to be paid on account of insurance, taxes, assessments, utility,
operating and labor costs and similar charges.  In the case of any lease which
is terminable by the lessee upon the payment of penalty, such net amount shall
also include the lesser of the amount of such penalty (in which case no rent
shall be considered as required to be paid under such lease subsequent to the
first date upon which it may be so terminated) or the rent which would otherwise
be required to be paid if such lease is not so terminated.  "Attributable Value"
means, as to a Capital Lease Obligation, the principal amount thereof.

       "Board of Directors" means the board of directors of the Company.

       "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Company to have been duly adopted by
the Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee.

       "Business Day" means each Monday, Tuesday, Wednesday, Thursday and
Friday which is not a day on which banking institutions in The City of New York
are authorized or obligated by law or executive order to close.

       "Capital Lease Obligation" of any Person means the obligation to pay
rent or other payment amounts under a lease of (or other Debt arrangements
conveying the right to use) real or personal property of such Person which is
required to be classified and accounted for as a capital lease or a liability on
the face of a balance sheet of such Person in accordance with generally accepted
accounting principles (a "Capital Lease").  The stated maturity of such
obligation shall be the date of the last payment of rent or any other amount due
under such lease prior to the first date upon which such lease may be terminated
by the lessee without payment of a penalty.  The principal amount of such
obligation shall be the capitalized amount thereof that would appear on the face
of a balance sheet of such Person in accordance with generally accepted
accounting principles.

       "Capital Stock" of any Person means any and all shares, interests,
participations or other equivalents (however designated) of corporate stock or
other equity participations, including partnership interests, whether general or
limited, of such Person.

       "Cash Equivalents" means (i) any Debt with a maturity of 365 days or
less issued or directly and fully guaranteed as insured by the United States or
any agency or instrumentality thereof (provided that the full faith and credit
of the United States is pledged in support thereof or such Debt constitutes a
general obligation of such country); (ii) deposits, certificates of deposit or
acceptances with a maturity of 365 days or less of any financial institution
that is a member of the Federal Reserve System, in each case having combined
capital and surplus and undivided profits (or any similar capital concept) of
not less than $500 million and whose senior unsecured debt is rated at least 
"A-1" by Standard & Poor's Ratings Services or "P-1" by Moody's Investors 
Service, Inc.; (iii) commercial paper with a maturity of 365 days or less issued
by a Corporation (other than an Affiliate of the Company) organized under the 
laws of the United States or any state thereof and rated at least 
"A-1" by Standard & Poor's Ratings Services or "P-1" by Moody's Investors 
Service, Inc.; and (iv) repurchase agreements and reverse repurchase agreements 
relating to marketable direct obligations issued or unconditionally guaranteed 
by the United States or issued by any agency or instrumentality thereof and 
backed by the full 

                                       3

 
faith and credit of the United States maturing within 365 days from the date of
acquisition.

       "Change of Control" has the meaning specified in Section 1010.

       "Commission" means the Securities and Exchange Commission, as from
time to time constituted, created under the Exchange Act, or, if at any time
after March 31, 1997 such Commission is not existing and performing the duties
now assigned to it under the Trust Indenture Act, then the body performing such
duties at such time.

       "Common Stock" of any Person means Capital Stock of such Person that
does not rank prior, as to the payment of dividends or as to the distribution of
assets upon any voluntary or involuntary liquidation, dissolution or winding up
of such Person, to shares of Capital Stock of any other class of such Person.

       "Company" means the Person named as the "Company" in the first
paragraph of this Indenture, until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

       "Company Order" or "Company Request" means a written request or
order signed in the name of the Company by the Chairman of the Board of
Directors, a Vice Chairman of the Board of Directors, the President or a Vice
President, and by the Chief Financial Officer, the Chief Accounting Officer, the
Treasurer, an Assistant Treasurer, the Secretary or an Assistant Secretary of
the Company and delivered to the Trustee.

       "Consolidated Capital Ratio" of any Person as of any date means the
ratio of (i) the aggregate consolidated principal amount of Debt of such Person
then outstanding to (ii) the greater of either (a) the aggregate consolidated
paid-in capital of such Person as of such date or (b) the stockholders' equity
as of such date as shown on the consolidated balance sheet of such Person in
accordance with generally accepted accounting principles.

       "Consolidated Cash Flow Available for Fixed Charges" for any period
means the Consolidated Net Income of the Company and its Restricted Subsidiaries
for such period increased by the sum of (i) Consolidated Interest Expense of the
Company and its Restricted Subsidiaries for such period, plus (ii) Consolidated
Income Tax Expense of the Company and its Subsidiaries for such period, plus
(iii) the consolidated depreciation and amortization expense or other non-cash
write-offs of assets included in the income statement of the Company and its
Restricted Subsidiaries for such period, plus (iv) any charge related to any
premium or penalty paid in connection with redeeming or retiring any Debt prior
to its stated maturity; provided, however, that there shall be excluded
therefrom the Consolidated Cash Flow Available for Fixed Charges (if positive)
of any Restricted Subsidiary (calculated separately for such Restricted
Subsidiary in the same manner as provided above for the Company) that is subject
to a restriction which prevents the payment of dividends or the making of
distributions to the Company or another Restricted Subsidiary to the extent of
such restriction.

       "Consolidated Income Tax Expense" for any period means the aggregate
amounts of the provisions for income taxes of the Company and its Subsidiaries
for such period calculated on a consolidated basis in accordance with generally
accepted accounting principles.

       "Consolidated Interest Expense" means for any period the interest
expense included in a consolidated income statement (excluding interest income)
of the Company and its Restricted Subsidiaries for such period in accordance
with generally accepted accounting principles, including without limitation or

                                       4

 
duplication (or, to the extent not so included, with the addition of), (i) the
amortization of Debt discounts; (ii) any payments or fees with respect to
letters of credit, bankers' acceptances or similar facilities; (iii) fees with
respect to interest rate swap or similar agreements or foreign currency hedge,
exchange or similar agreements; (iv) Preferred Stock dividends of the Company
and its Subsidiaries (other than dividends paid in shares of Preferred Stock
that is not Disqualified Stock) declared and paid or payable; (v) accrued
Disqualified Stock dividends of the Company and its Restricted Subsidiaries,
whether or not declared or paid; (vi) interest on Debt guaranteed by the Company
and its Restricted Subsidiaries; and (vii) the portion of any Capital Lease
Obligation paid during such period that is allocable to interest expense.

       "Consolidated Net Income" for any period means the net income (or
loss) of the Company and its Restricted Subsidiaries for such period determined
on a consolidated basis in accordance with generally accepted accounting
principles; provided that there shall be excluded therefrom (a) the net income
(or loss) of any Person acquired by the Company or a Restricted Subsidiary in a
pooling-of-interests transaction for any period prior to the date of such
transaction, (b) the net income (or loss) of any Person that is not a Restricted
Subsidiary except to the extent of the amount of dividends or other
distributions actually paid to the Company or a Restricted Subsidiary by such
Person during such period, (c) gains or losses on Asset Dispositions by the
Company or its Restricted Subsidiaries, (d) all extraordinary gains and
extraordinary losses, determined in accordance with generally accepted
accounting principles, (e) the cumulative effect of changes in accounting
principles, (f) non-cash gains or losses resulting from fluctuations in currency
exchange rates, (g) any non-cash expense related to the issuance to employees or
directors of the Company or any Restricted Subsidiary or any Affiliate of the
Company of (i) options to purchase Capital Stock of the Company or such
Restricted Subsidiary or (ii) other compensatory rights (including under the
Company's Growth Share Plan), provided, in either case, that such options or
rights, by their terms, can be redeemed only for Capital Stock, (h) with respect
to a Restricted Subsidiary that is not a Wholly Owned Subsidiary, any aggregate
net income (or loss) in excess of the Company's or any Restricted Subsidiary's
pro rata share of the net income (or loss) of such Restricted Subsidiary that is
not a Wholly Owned Subsidiary shall be excluded and (i) the tax effect of any of
the items described in clauses (a) through (h) above; provided further that for
purposes of any determination pursuant to Section 1013, there shall further be
excluded therefrom the net income (but not net loss) of any Restricted
Subsidiary that is subject to a restriction which prevents the payment of
dividends or the making of distributions to the Company or another Restricted
Subsidiary to the extent of such restriction.

       "Consolidated Net Worth" of any Person means the stockholders'
equity of such Person, determined on a consolidated basis in accordance with
generally accepted accounting principles, less amounts attributable to
Disqualified Stock of such Person; provided that, with respect to the Company,
adjustments following March 31, 1997 to the accounting books and records of the
Company in accordance with Accounting Principles Board Opinions Nos. 16 and 17
(or successor opinions thereto) or otherwise resulting from the acquisition of
control of the Company by another Person shall not be given effect to.

       "Consolidated Tangible Assets" of any Person means the total amount
of assets (less applicable reserves and other properly deductible items) which
under generally accepted accounting principles would be included on a
consolidated balance sheet of such Person and its Subsidiaries after deducting
therefrom all goodwill, trade names, trademarks, patents, unamortized debt
discount and expense and other like intangibles, which in each case under
generally accepted accounting principles would be included on such consolidated
balance sheet.

                                       5

 
       "Continuing Director" means, as of any date of determination, any
member of the Board of Directors who (i) was a member of such Board of Directors
on March 31, 1997 or (ii) was nominated for election or elected to the Board of
Directors with the affirmative vote of a majority of the Continuing Directors
who were members of the Board of Directors at the time of such nomination or
election or the affirmative vote of Permitted Holders.

       "Corporate Trust Office" means the principal corporate trust office
of the Trustee, at which at any particular time its corporate trust business
shall be administered, which office at the date of execution of this Indenture
is located at Four Albany Street, New York, New York  10006, except that, with
respect to presentation of Securities for payment or for registration of
transfer or exchange, such term shall mean the office or agency of the Trustee
at which, at any particular time, its corporate agency business shall be
conducted.

       "Corporation" includes corporations, associations, companies and
business trusts.

       "Credit Facilities" means one or more credit agreements, loan
agreements or similar facilities, secured or unsecured, entered into from time
to time by the Company and its Restricted Subsidiaries, and including any
related notes, Guarantees, collateral documents, instruments and agreements
executed in connection therewith, as the same may be amended, supplemented,
modified, restated or replaced from time to time.

       "Debt" means (without duplication), with respect to any Person,
whether recourse is to all or a portion of the assets of such Person and whether
or not contingent, (i) every obligation of such Person for money borrowed, (ii)
every obligation of such Person evidenced by bonds, debentures, notes or other
similar instruments, including obligations incurred in connection with the
acquisition of property, assets or businesses, (iii) every reimbursement
obligation of such Person with respect to letters of credit, bankers'
acceptances or similar facilities issued for the account of such Person, (iv)
every obligation of such Person issued or assumed as the deferred purchase price
of property or services (including securities repurchase agreements but
excluding trade accounts payable or accrued liabilities arising in the ordinary
course of business), (v) every Capital Lease Obligation of such Person, (vi) all
Receivables Sales of such Person, together with any obligation of such Person to
pay any discount, interest, fees, indemnities, penalties, recourse, expenses or
other amounts in connection therewith, (vii) all obligations to redeem
Disqualified Stock issued by such Person, (viii) every obligation under Interest
Rate and Currency Protection Agreements of such Person and (ix) every obligation
of the type referred to in clauses (i) through (viii) of another Person and all
dividends of another Person the payment of which, in either case, such Person
has Guaranteed.  The "amount" or "principal amount" of Debt at any time of
determination as used herein represented by (a) any Debt issued at a price that
is less than the principal amount at maturity thereof shall be the amount of the
liability in respect thereof determined in accordance with generally accepted
accounting principles, (b) any Receivables Sale shall be the amount of the
unrecovered capital or principal investment of the purchaser (other than the
Company or a Wholly Owned Subsidiary of the Company) thereof, excluding amounts
representative of yield or interest earned on such investment, or (c) any
Disqualified Stock shall be the maximum fixed redemption or repurchase price in
respect thereof.

       "Debt Securities" means any debt securities (including any guarantee
of such securities) issued by the Company or any Restricted Subsidiary of the
Company in connection with a public offering or a private placement (excluding
Debt permitted to be Incurred pursuant to paragraph (b) of Section 1011).

                                       6

 
       "Default" means any event, act or condition the occurrence of which
is, or after notice or the passage of time or both would be, an Event of
Default.

       "Defaulted Interest" has the meaning specified in Section 307.

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

       "Designation" and "Designation Amount" have the respective meanings
specified in Section 1021.

       "Disqualified Stock" of any Person means any Capital Stock of such
Person which, by its terms (or by the terms of any security into which it is
convertible or for which it is exchangeable), or upon the happening of any
event, matures or is mandatorily redeemable, pursuant to a sinking fund
obligation or otherwise, or is redeemable at the option of such Person, any
Subsidiary of such Person or the holder thereof, in whole or in part, on or
prior to the final Stated Maturity of the Securities, provided, however, that
any Preferred Stock which would not constitute Disqualified Stock but for
provisions thereof giving holders thereof the right to require the Company to
repurchase or redeem such Preferred Stock upon the occurrence of a Change of
Control occurring prior to the final Stated Maturity of the Securities shall not
constitute Disqualified Stock if the change of control provisions applicable to
such Preferred Stock are no more favorable to the holders of such Preferred
Stock than the provisions applicable to the Securities contained in Section 1010
and such Preferred Stock specifically provides that the Company shall not
repurchase or redeem any such stock pursuant to such provisions prior to the
Company's repurchase of such Securities as are required to be repurchased
pursuant to Section 1010.

       "Eligible Institution" means a commercial banking institution that
has combined capital and surplus of not less than $500 million or its equivalent
in foreign currency, whose debt is rated "A" (or higher) according to Standard &
Poor's Ratings Services or Moody's Investors Service, Inc. at the time as of
which any investment or rollover therein is made.

       "Eligible Receivables" means, at any time, Receivables of the
Company and its Restricted Subsidiaries, as evidenced on the most recent
quarterly consolidated balance sheet of the Company as at a date at least 45
days prior to such time, less Receivables of the Company or any Restricted
Subsidiary employed to secure Debt Incurred pursuant to clause (vii) of
paragraph (b) of Section 1011.

       "Event of Default" has the meaning specified in Section 501.

       "Exchange Act" means the Securities Exchange Act of 1934, as amended
(or any successor act), and the rules and regulations thereunder (or respective
successors thereto).

       "Exchange Securities" has the meaning stated in the first recital of
this Indenture and more particularly means any Securities authenticated and
delivered under this Indenture.

       "Expiration Date" has the meaning specified in "Offer to Purchase"
below.

       "Fair Market Value" means, with respect to any asset or property,
the price that could be negotiated in an arm's-length free market transaction,
for cash, between a willing seller and a willing buyer, neither of whom is under
pressure or compulsion to complete the transaction.  Fair Market Value shall be

                                       7

 
determined by the Board of Directors acting in good faith and shall be evidenced
by a Board Resolution.

       "Federal Bankruptcy Code" means the Bankruptcy Act of Title 11 of
the United States Code, as amended from time to time.

       "Global Security" has the meaning specified in Section 303. 

       "Government Securities" means direct obligations of, or obligations
guaranteed by, the United States of America for the payment of which guarantee
or obligations the full faith and credit of the United States is pledged and
which have a remaining weighted average life to maturity of not less than one
year from the date of investment therein.

       "Group" has the meaning specified in Section 1010.

       "Guarantee" by any Person means any obligation, contingent or
otherwise, of such Person guaranteeing, or having the economic effect of
guaranteeing, any Debt of any other Person (the "primary obligor") in any
manner, whether directly or indirectly, and including, without limitation, any
obligation of such Person (i) to purchase or pay (or advance or supply funds for
the purchase or payment of) such Debt or to purchase (or to advance or supply
funds for the purchase of) any security for the payment of such Debt, (ii) to
purchase property, securities or services for the purpose of assuring the holder
of such Debt of the payment of such Debt or (iii) to maintain working capital,
equity capital or other financial statement condition or liquidity of the
primary obligor so as to enable the primary obligor to pay such Debt (and
"Guaranteed", "Guaranteeing" and "Guarantor" shall have meanings correlative to
the foregoing); provided, however, that the Guarantee by any Person shall not
include endorsements by such Person for collection or deposit, in either case,
in the ordinary course of business.

       "Guarantor" means a Restricted Subsidiary of the Company that has
executed a Restricted Subsidiary Guarantee.

       "Holder" means a Person in whose name a Security is registered in
the Security Register.

       "Incur" means, with respect to any Debt or other obligation of any
Person, to create, issue, incur (by conversion, exchange or otherwise), assume,
Guarantee or otherwise become liable in respect of such Debt or other obligation
including by acquisition of Subsidiaries or the recording, as required pursuant
to generally accepted accounting principles or otherwise, of any such Debt or
other obligation on the balance sheet of such Person (and "Incurrence",
"Incurred", "Incurrable" and "Incurring" shall have meanings correlative to the
foregoing); provided, however, that a change in generally accepted accounting
principles that results in an obligation of such Person that exists at such time
becoming Debt shall not be deemed an Incurrence of such Debt and that neither
the accrual of interest nor the accretion of original issue discount shall be
deemed an Incurrence of Debt.

       "Indenture" means this instrument as originally executed and as it
may from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof.

       "Indenture Obligations" means the obligations of the Company and any
other obligor under this Indenture or under the Securities to pay principal of,
premium, if any, and interest on the Securities when due and payable, whether at
maturity, by acceleration, call for redemption or repurchase or otherwise, and
all other amounts due or to become due under or in connection with this
Indenture or the Securities and the performance of all other obligations to the

                                       8

 
Trustee (including, but not limited to, payment of all amounts due the Trustee
under Section 607), Paying Agent, Security Registrar and the Holders of the
Securities under this Indenture and the Securities according to the terms
thereof.

       "Initial Purchasers" means Salomon Brothers Inc, Donaldson, Lufkin &
Jenrette Securities Corporation and Goldman, Sachs & Co.

       "Interest Payment Date" means the Stated Maturity of an installment
of interest on the Securities.

       "Interest Rate or Currency Protection Agreement" of any Person means
any forward contract, futures contract, swap, option or other financial
agreement or arrangement (including, without limitation, caps, floors, collars
and similar agreements) relating to, or the value of which is dependent upon,
interest rates or currency exchange rates or indices.

       "Investment" by any Person means any direct or indirect loan,
advance or other extension of credit or capital contribution (by means of
transfers of cash or other property to others or payments for property or
services for the account or use of others, or otherwise) to, or purchase or
acquisition of Capital Stock, bonds, notes, debentures or other securities or
evidence of Debt issued by, any other Person, including any payment on a
Guarantee of any obligation of such other Person.

       "Lien" means, with respect to any property or assets, any mortgage
or deed of trust, pledge, hypothecation, assignment, Receivables Sale, deposit
arrangement, security interest, lien, charge, easement (other than any easement
not materially impairing usefulness), encumbrance, preference, priority or other
security agreement or preferential arrangement of any kind or nature whatsoever
on or with respect to such property or assets (including, without limitation,
any conditional sale or other title retention agreement having substantially the
same economic effect as any of the foregoing).  For purposes of this definition
the sale, lease, conveyance or other transfer by the Company or any Subsidiary
of, including the grant of indefeasible rights of use or equivalent arrangements
with respect to, dark or lit communications fiber capacity or communications
conduit shall not constitute a Lien.

       "Maturity", when used with respect to any Security, means the date
on which the principal of such Security or an installment of principal becomes
due and payable as therein or herein provided, whether at the Stated Maturity or
by declaration of acceleration, notice of redemption or otherwise.

       "Net Available Proceeds" from any Asset Disposition by any Person
means cash or cash equivalents received (including amounts received by way of
sale or discounting of any note, installment receivable or other receivable, but
excluding any other consideration received in the form of assumption by the
acquiror of Debt or other obligations relating to such properties or assets)
therefrom by such Person, net of (i) any portion thereof invested within 360
days of such Asset Disposition in Telecommunications Assets, (ii) all legal,
title and recording tax expenses, commissions and other fees and expenses
Incurred and all federal, state, provincial, foreign and local taxes required to
be accrued as a liability as a consequence of such Asset Disposition, (iii) all
payments made by such Person or its Subsidiaries on any Debt which is secured by
such assets in accordance with the terms of any Lien upon or with respect to
such assets or which must by the terms of such Lien, or in order to obtain a
necessary consent to such Asset Disposition or by applicable law, be repaid out
of the proceeds from such Asset Disposition, (iv) all distributions and other
payments made to minority interest holders in Subsidiaries of such Person or
Permitted Joint Ventures as a result of such Asset Disposition and (v)
appropriate amounts to be provided by such Person or any Subsidiary thereof, as

                                       9

 
the case may be, as a reserve in accordance with generally accepted accounting
principles against any liabilities associated with such assets and retained by
such Person or any Subsidiary thereof, as the case may be, after such Asset
Disposition, including, without limitation, liabilities under any
indemnification obligations and severance and other employee termination costs
associated with such Asset Disposition, in each case as determined by the Board
of Directors of such Person, in its reasonable good faith judgment evidenced by
Board Resolution; provided, however, that any reduction in such reserve within
twelve months following the consummation of such Asset Disposition shall be for
all purposes of this Indenture and the Securities treated as a new Asset
Disposition at the time of such reduction with Net Available Proceeds equal to
the amount of such reduction.

       "Notice of Default" has the meaning specified in Section 501.

       "Offer" has the meaning specified in "Offer to Purchase" below.

       "Offer to Purchase" means a written offer (the "Offer") sent by the
Company by first class mail, postage prepaid, to each Holder of Securities at
his address appearing in the Security Register on the date of the Offer offering
to purchase up to the total aggregate principal amount of Securities specified
in such Offer at the purchase price specified in such Offer (as determined
pursuant to Section 1010).  Unless otherwise required by applicable law, the
Offer shall specify an expiration date (the "Expiration Date") of the Offer to
Purchase which shall be, subject to any contrary requirements of applicable law,
not less than 30 days or more than 60 days after the date of such Offer and a
settlement date (the "Purchase Date") for purchase of Securities within five
Business Days after the Expiration Date.  The Company shall notify the Trustee
at least 15 Business Days (or such shorter period as is acceptable to the
Trustee) prior to the mailing of the Offer of the Company's obligation to make
an Offer to Purchase, and the Offer shall be mailed by the Company or, at the
Company's request, by the Trustee in the name and at the expense of the Company.
The Offer shall contain information concerning the business of the Company and
its Subsidiaries which the Company in good faith believes will enable such
Holders to make an informed decision with respect to the Offer to Purchase
(which at a minimum will include (i) the most recent annual and quarterly
financial statements and "Management's Discussion and Analysis of Financial
Condition and Results of Operations" contained in the documents required to be
filed with the Trustee pursuant to Section 1008 (which requirements may be
satisfied by delivery of such documents together with the Offer), (ii) a
description of material developments in the Company's business subsequent to the
date of the latest of such financial statements referred to in clause (i)
(including a description of the events requiring the Company to make the Offer
to Purchase), (iii) if applicable, appropriate pro forma financial information
concerning the Offer to Purchase and the events requiring the Company to make
the Offer to Purchase and (iv) any other information required by applicable law
to be included therein).  The Offer shall contain all instructions and materials
necessary to enable such Holders to tender Securities pursuant to the Offer to
Purchase.  The Offer shall also state:

       (a)  the Section of this Indenture pursuant to which the Offer to
  Purchase is being made;

       (b)  the Expiration Date and the Purchase Date;

       (c)  the aggregate principal  amount of the Outstanding Securities
  offered to be purchased by the Company pursuant to the Offer to Purchase
  (including, if less than 100%, the manner by which such has been
  determined pursuant to the Section hereof requiring the Offer to Purchase)
  (the "Purchase Amount");

                                      10

 
       (d)  the purchase price to be paid by the Company for each $1,000
  aggregate principal amount of Securities accepted for payment (as
  specified pursuant to Section 1010) (the "Purchase Price");

       (e)  that the Holder may tender all or any portion of the
  Securities registered in the name of such Holder and that any portion of a
  Security tendered must be tendered in an integral multiple of $1,000
  principal amount;

       (f)  the place or places where Securities are to be surrendered for
  tender pursuant to the Offer to Purchase;

       (g)  that any Securities not tendered or tendered but not purchased
  by the Company will continue to accrue interest, as the case may be;

       (h)  that on the Purchase Date the Purchase Price will become due
  and payable upon each Security being accepted for payment pursuant to the
  Offer to Purchase and that interest thereon, if any, shall cease to accrue
  on and after the Purchase Date;

       (i)  that each Holder electing to tender a Security pursuant to the
  Offer to Purchase will be required to surrender such Security at the place
  or places specified in the Offer prior to the close of business on the
  Expiration Date (such Security being, if the Company or the Trustee so
  requires, duly endorsed by, or accompanied by a written instrument of
  transfer in form satisfactory to the Company and the Trustee duly executed
  by, the Holder thereof or its attorney duly authorized in writing);

       (j)  that Holders will be entitled to withdraw all or any portion
  of Securities tendered if the Company (or their Paying Agent) receives,
  not later than the close of business on the Expiration Date, a telegram,
  telex, facsimile transmission or letter setting forth the name of the
  Holder, the principal amount of the Security the Holder tendered, the
  certificate number of the Security the Holder tendered and a statement
  that such Holder is withdrawing all or a portion of its tender;

       (k)  that (i) if Securities in an aggregate principal amount less
  than or equal to the Purchase Amount are duly tendered and not withdrawn
  pursuant to the Offer to Purchase, the Company shall purchase all such
  Securities and (ii) if Securities in an aggregate principal amount in
  excess of the Purchase Amount are tendered and not withdrawn pursuant to
  the Offer to Purchase, the Company shall purchase Securities having an
  aggregate principal amount equal to the Purchase Amount on a pro rata
  basis (with such adjustments as may be deemed appropriate so that only
  Securities in denominations of $1,000 or integral multiples thereof shall
  be purchased); and

       (l)  that in the case of any Holder whose Security is purchased
  only in part, the Company shall execute, and the Trustee shall
  authenticate and deliver to the Holder of such Security without service
  charge, a new Security or Securities, of any authorized denomination as
  requested by such Holder, in an aggregate principal amount equal to and in
  exchange for the unpurchased portion of the Security so tendered.

Any Offer to Purchase shall be governed by and effected in accordance with the
Offer for such Offer to Purchase.

       "Officers' Certificate" means a certificate signed by the Chairman
of the Board of Directors, a Vice Chairman of the Board of Directors, the
President or a Vice President, and by the Chief Financial Officer, the Chief

                                      11

 
Accounting Officer, the Treasurer, an Assistant Treasurer, the Secretary or an
Assistant Secretary of the Company and delivered to the Trustee.

       "Opinion of Counsel" means an opinion of counsel acceptable to the
Trustee (who may be counsel to the Company, including an employee of the
Company).

       "Outstanding", when used with respect to Securities, means, as of
the date of determination, all Securities theretofore authenticated and
delivered under this Indenture, except:

       (i)   Securities theretofore cancelled by the Trustee or delivered
  to the Trustee for cancellation;

       (ii)  Securities, or portions thereof, for whose payment or
  redemption money in the necessary amount has been theretofore deposited
  with the Trustee or any Paying Agent (other than the Company) in trust or
  set aside and segregated in trust by the Company (if the Company shall act
  as its own Paying Agent) for the Holders of such Securities; provided
  that, if such Securities are to be redeemed, notice of such redemption has
  been duly given pursuant to this Indenture;  

       (iii) Securities, except to the extent provided in Sections 1202 and
  1203, with respect to which the Company has effected defeasance and/or
  covenant defeasance as provided in Article Twelve; and

       (iv)  Securities which have been paid pursuant to Section 306 or in
  exchange for or in lieu of which other Securities have been authenticated
  and delivered pursuant to this Indenture, other than any such Securities
  in respect of which there shall have been presented to the Trustee proof
  satisfactory to it that such Securities are held by a bona fide purchaser
  in whose hands the Securities are valid obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of Outstanding Securities have given any request, demand,
authorization, direction, consent, notice or waiver hereunder, and for the
purpose of making the calculations required by TIA Section 313, Securities owned
by the Company or any other obligor upon the Securities or any Affiliate of the
Company or such other obligor shall be disregarded and deemed not to be
Outstanding, except that, in determining whether the Trustee shall be protected
in making such calculation or in relying upon any such request, demand,
authorization, direction, notice, consent or waiver, only Securities which any
Responsible Officer of the Trustee knows to be so owned shall be so disregarded.
Securities 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 Securities and that the pledgee
is not the Company or any other obligor upon the Securities or any Affiliate of
the Company or such other obligor.

       "Old Securities" has the meaning stated in the first recital of this
Indenture.

       "Paying Agent" means any Person (including the Company acting as
Paying Agent) authorized by the Company to pay the principal of (and premium, if
any) or interest on any Securities on behalf of the Company.

       "Permitted Holders" means any Person who was the beneficial owner
(within the meaning of Rule 13d-3 under the Exchange Act) of stock of the
Company on March 31, 1997, and any Affiliates of such Person (i) who were
Affiliates of such Person on March 31, 1997 or (ii) who were formed, directly or
indirectly, by any such Person after March 31, 1997; provided, however, that

                                      12

 
Persons who were beneficial owners (within the meaning of Rule 13d-3 under the
Exchange Act) of such Person on March 31, 1997 continued to be beneficial owners
(within the meaning of Rule 13d-3 under the Exchange Act) at the time of
formation of such Affiliate.

       "Permitted Interest Rate or Currency Protection Agreement" of any
Person means any Interest Rate or Currency Protection Agreement entered into
with one or more financial institutions in the ordinary course of business that
is designed to protect such Person against fluctuations in interest rates or
currency exchange rates with respect to Debt Incurred and which shall have a
notional amount no greater than the payments due with respect to the Debt being
hedged thereby and not for purposes of speculation.

       "Permitted Investments" means (a) Cash Equivalents; (b) Investments
in prepaid expenses, negotiable instruments held for collection and lease,
utility and workers' compensation, performance and other similar deposits;
(c) loans, advances or extensions of credit to employees and directors made in
the ordinary course of business and consistent with past practice; (d)
obligations under Interest Rate or Currency Protection Agreements; (e) bonds,
notes, debentures and other securities received as a result of Asset
Dispositions pursuant to and in compliance with Section 1018; (f) Investments
made in the ordinary course of business as partial payment for constructing a
network relating to a Telecommunications Business; (g) commercially reasonable
extensions of trade credit; (h) Investments in any Person as a result of which
such Person becomes a Restricted Subsidiary; (i) Investments in Permitted Joint
Ventures in an aggregate amount not to exceed $25 million; (j) Investments in
Affiliates or Related Persons in an aggregate amount not to exceed $11 million,
provided that the making of such Investments is permitted pursuant to
Section 1020; and (k) Investments in an aggregate amount not to exceed $15
million consisting of the contribution by the Company or any Restricted
Subsidiary of assets located in Mexico to joint ventures in which the Company or
a Restricted Subsidiary has an interest.

       "Permitted Joint Venture" means a Corporation, partnership or other
entity other than a Restricted Subsidiary engaged in one or more
Telecommunications Businesses over which the Company and/or one or more
Strategic Investors have, directly or indirectly, the power to direct the
policies, management and affairs.

       "Permitted Liens" means (a) Liens for taxes, assessments,
governmental charges, levies or claims which are not yet delinquent or which are
being contested in good faith by appropriate proceedings, if a reserve or other
appropriate provision, if any, as shall be required in conformity with generally
accepted accounting principles shall have been made therefor; (b) other Liens
incidental to the conduct of the Company's and its Restricted Subsidiaries'
business or the ownership of its property and assets not securing any Debt, and
which do not in the aggregate materially detract from the value of the Company's
and its Restricted Subsidiaries' property or assets when taken as a whole, or
materially impair the use thereof in the operation of its business; (c) Liens
with respect to assets of a Restricted Subsidiary granted by such Restricted
Subsidiary to the Company or a Restricted Subsidiary to secure Debt owing to the
Company or such Restricted Subsidiary; (d) Liens, pledges and deposits made in
the ordinary course of business in connection with workers' compensation,
unemployment insurance and other types of statutory obligations; (e) Liens,
pledges or deposits made to secure the performance of tenders, bids, leases,
public or statutory obligations, sureties, stays, appeals, indemnities,
performance or other similar bonds and other obligations of like nature Incurred
in the ordinary course of business (exclusive of obligations for the payment of
borrowed money); (f) zoning restrictions, servitudes, easements, rights-of-way,
restrictions and other similar charges or encumbrances Incurred in the ordinary
course of business which, in the aggregate, do not materially detract from the

                                      13

 
value of the property subject thereto or materially interfere with the ordinary
conduct of the business of the Company or its Restricted Subsidiaries; (g) Liens
arising out of judgments or awards against or other court proceedings concerning
the Company or any Restricted Subsidiary with respect to which the Company or
such Restricted Subsidiary is prosecuting an appeal or proceeding for review and
the Company or such Restricted Subsidiary is maintaining adequate reserves in
accordance with generally accepted accounting principles; and (h) any interest
or title of a lessor in the property subject to any lease other than a Capital
Lease.

       "Permitted Telecommunications Capital Asset Disposition" means the
transfer, conveyance, sale, lease or other disposition of a capital asset that
is a Telecommunications Asset (including fiber, conduit and related equipment)
(i) the proceeds of which are treated as revenues by the Company in accordance
with generally accepted accounting principles and (ii) that, in the case of the
sale of fiber, would not result in the Company retaining less than 24 fibers per
route mile on any segment of the Company's network.

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

       "Physical Security" has the meaning specified in Section 303.

       "Predecessor Security" of any particular Security means every
previous Security evidencing all or a portion of the same debt as that evidenced
by such particular Security; and, for the purposes of this definition, any
Security authenticated and delivered under Section 306 in exchange for a
mutilated security or in lieu of a lost, destroyed or stolen Security shall be
deemed to evidence the same debt as the mutilated, lost, destroyed or stolen
Security.

       "Preferred Dividends" for any Person means for any period the
quotient determined by dividing the amount of dividends and distributions paid
or accrued (whether or not declared) on Preferred Stock of such Person during
such period calculated in accordance with generally accepted accounting
principles, by 1 minus the maximum statutory income tax rate then applicable to
the Company (expressed as a decimal).

       "Preferred Stock" of any Person means Capital Stock of such Person
of any class or classes (however designated) that ranks prior, as to the payment
of dividends or as to the distribution of assets upon any voluntary or
involuntary liquidation, dissolution or winding up of such Person, to shares of
Capital Stock of any other class of such Person.

       "Private Placement Legend" means the third paragraph of the legend
set forth in the Securities in the form set forth in Exhibit A.

       "Public Equity Offering" means an underwritten public offering of
common stock made on a primary basis by the Company pursuant to a registration
statement filed with, and declared effective by, the Commission in accordance
with the Securities Act.

       "Purchase Amount" has the meaning specified in "Offer to Purchase"
above.

       "Purchase Date" has the meaning specified in "Offer to Purchase"
above.

       "Purchase Money Debt" means Debt Incurred at any time within 270
days of, and for the purposes of financing all or any part of the cost of, the


                                      14

 
construction, installation, acquisition or improvement by the Company or any
Restricted Subsidiary of the Company of any new Telecommunications Assets
constructed, installed, acquired or improved after March 31, 1997, provided that
the proceeds of such Debt are expended for such purposes within such 270-day
period.

       "Purchase Price" has the meaning specified in "Offer to Purchase"
above.

       "Rating Decline" means the Securities cease to be rated B+ (or the
equivalent thereof) or better by Standard & Poor's Ratings Services or B2 (or
the equivalent thereof) or better by Moody's Investors Service, Inc.

       "Receivables" means receivables, chattel paper, instruments,
documents or intangibles evidencing or relating to the right to payment of
money, excluding allowances for doubtful accounts.

       "Receivables Sale" of any Person means any sale of Receivables of
such Person (pursuant to a purchase facility or otherwise), other than in
connection with a disposition of the business operations of such Person relating
thereto or a disposition of defaulted Receivables for purposes of collection and
not as a financing arrangement.

       "Redemption Date", when used with respect to any Security to be
redeemed, in whole or in part, means the date fixed for such redemption by or
pursuant to this Indenture.

       "Redemption Price", when used with respect to any Security to be
redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

       "Regular Record Date" for the interest payable on any Interest
Payment Date means the September 15 or March 15 (whether or not a Business Day),
as the case may be, next preceding such Interest Payment Date.

       "Related Person" of any Person means any other Person directly or
indirectly owning (a) 5% or more of the outstanding Common Stock of such Person
(or, in the case of a Person that is not a Corporation, 5% or more of the
outstanding equity interest in such Person) or (b) 5% or more of the combined
outstanding voting power of the Voting Stock of such Person.

       "Responsible Officer", when used with respect to the Trustee, means
any officer within the Trustee's Corporate Trust Office, including any vice
president, the Managing Director, the secretary, any assistant secretary, any
assistant treasurer, or any other officer of the Trustee customarily performing
functions similar to those performed by any of the above-designated officers,
and also means, with respect to a particular corporate trust matter, any other
officer to whom such matter is referred because of his knowledge of and
familiarity with the particular subject.

       "Restricted Payment" has the meaning specified in Section 1013.

       "Restricted Subsidiary" means a Subsidiary of the Company, or of a
Restricted Subsidiary that is a Wholly Owned Subsidiary of the Company, that has
not been designated by the Board of Directors (by a Board Resolution) as an
Unrestricted Subsidiary pursuant to and in compliance with Section 1021.

       "Restricted Subsidiary Guarantee" means a supplemental indenture to
this Indenture, in form satisfactory to the Trustee, executed in accordance with
Article Nine, providing for an unconditional Guarantee of payment in full of the
principal of, premium, if any, and interest on the Securities.  Any such

                                      15

 
Restricted Subsidiary Guarantee shall not be subordinate in right of payment to
any Debt of the Restricted Subsidiary providing the Restricted Subsidiary
Guarantee.

       "Revocation" has the meaning specified in Section 1021.

       "Sale and Leaseback Transaction" of any Person means an arrangement
with any lender or investor or to which such lender or investor is a party
providing for the leasing by such Person of any property or asset of such Person
which has been or is being sold or transferred by such Person more than 365 days
after the acquisition thereof or the completion of construction or commencement
of operation thereof to such lender or investor or to any Person to whom funds
have been or are to be advanced by such lender or investor on the security of
such property or asset.  The stated maturity of such arrangement shall be the
date of the last payment of rent or any other amount due under such arrangement
prior to the first date on which such arrangement may be terminated by the
lessee without payment of a penalty.

       "Securities" has the meaning stated in the first recital of this
Indenture.

       "Securities Act" means the Securities Act of 1933, as amended.

       "Security Register" and "Security Registrar" have the respective
meanings specified in Section 305.

       "Special Record Date" for the payment of any Defaulted Interest
means a date fixed by the Trustee pursuant to Section 307.

       "Stated Maturity", when used with respect to any Security or any
installment of interest thereon, means the date specified in such Security as
the fixed date on which the principal of such Security or such installment of
interest is due and payable.

       "Strategic Investor" means a Corporation, partnership or other
entity engaged in one or more Telecommunications Businesses that has, or 80% or
more of the Voting Stock of which is owned by a Person that has, an equity
market capitalization, at the time of its initial Investment in the Company or
in a Permitted Joint Venture with the Company, in excess of $2 billion.

       "Subordinated Debt" means Debt of the Company as to which the
payment of principal of (and premium, if any) and interest and other payment
obligations in respect of such Debt shall be subordinate to the prior payment in
full of the Securities to at least the following extent:  (i) no payments of
principal of (or premium, if any) or interest on or otherwise due in respect of
such Debt may be permitted for so long as any default in the payment of
principal (or premium, if any) or interest on the Securities exists; (ii) in the
event that any other Default exists with respect to the Securities, upon notice
by 25% or more in principal amount of the Securities, to the Trustee, the
Trustee shall have the right to give notice to the Company and the holders of
such Debt (or trustees or agents therefor) of a payment blockage, and thereafter
no payments of principal of (or premium, if any) or interest on or otherwise due
in respect of such Debt may be made for a period of 179 days from the date of
such notice; and (iii) such Debt may not (x) provide for payments of principal
of such Debt at the stated maturity thereof or by way of a sinking fund
applicable thereto or by way of any mandatory redemption, defeasance, retirement
or repurchase thereof by the Company (including any redemption, retirement or
repurchase which is contingent upon events or circumstances but excluding any
retirement required by virtue of acceleration of such Debt upon an event of
default thereunder), in each case prior to the final Stated Maturity of the
Securities or (y) permit redemption or other retirement (including pursuant to

                                      16

 
an offer to purchase made by the Company) of such other Debt at the option of
the holder thereof prior to the final Stated Maturity of the Securities, other
than a redemption or other retirement at the option of the holder of such Debt
(including pursuant to an offer to purchase made by the Company) which is
conditioned upon a change of control of the Company pursuant to provisions
substantially similar to those described in Section 1010 (and which shall
provide that such Debt shall not be repurchased pursuant to such provisions
prior to the Company's repurchase of the Securities required to be repurchased
by the Company pursuant to the provisions of Section 1010).

       "Subsidiary" of any Person means (i) a Corporation more than 50% of
the combined voting power of the outstanding Voting Stock of which is owned,
directly or indirectly, by such Person or by one or more other Subsidiaries of
such Person or by such Person and one or more Subsidiaries thereof or (ii) any
other Person (other than a Corporation) in which such Person, or one or more
other Subsidiaries of such Person or such Person and one or more other
Subsidiaries thereof, directly or indirectly, has at least a majority ownership
and power to direct the policies, management and affairs thereof.

       "Telecommunications Assets" means all assets, rights (contractual or
otherwise) and properties, whether tangible or intangible, used or intended for
use in connection with a Telecommunications Business.

       "Telecommunications Business" means the business of (i)
transmitting, or providing services relating to the transmission of, voice, data
or video through owned or leased transmission facilities, (ii) constructing,
creating, developing or marketing communications related network equipment,
software and other devices for use in a telecommunications business or
(iii) evaluating, participating or pursuing any other activity or opportunity
that is primarily related to those identified in (i) or (ii) above, provided
that the determination of what constitutes a Telecommunications Business shall
be made in good faith by the Board of Directors.

       "Trust Indenture Act" or "TIA" means the Trust Indenture Act of 1939
as in force at the date as of which this Indenture was executed, except as
provided in Section 905.

       "Trustee" means the Person named as the "Trustee" in the first
paragraph of this Indenture until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean such successor Trustee.

       "Unrestricted Subsidiary" means any Subsidiary of the Company
designated as such pursuant to and in compliance with Section 1021.

       "Vice President", when used with respect to the Company or the
Trustee, means any vice president, whether or not designated by a number or a
word or words added before or after the title "vice president".

       "Voting Stock" of any Person means Capital Stock of such Person
which ordinarily has voting power for the election of directors (or persons
performing similar functions) of such Person, whether at all times or only for
so long as no senior class of securities has such voting power by reason of any
contingency.

       "Wholly Owned Subsidiary" of any Person means a Subsidiary of such
Person all of the outstanding Voting Stock or other ownership interests (other
than directors' qualifying shares) of which shall at the time be owned by such
Person or by one or more Wholly Owned Subsidiaries of such Person or by such
Person and one or more Wholly Owned Subsidiaries of such Person.

                                      17

 
       SECTION 102.  Compliance Certificates and Opinions.
                     ------------------------------------

       Upon any application or request by the Company to the Trustee to
take any action under any provision of this Indenture, the Company shall furnish
to the Trustee an Officers' Certificate stating that all conditions precedent,
if any, provided for in this Indenture (including any covenant compliance with
which constitutes a condition precedent) 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, if any, have been complied with, except
that in the case of any such application or request as to which the furnishing
of such documents is specifically required by any provision of this Indenture
relating to such particular application or request, no additional certificate or
opinion need be furnished.

       Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than pursuant to
Section 1009(a)) shall include:

       (1)  a statement that each individual signing such certificate or
  opinion has read such covenant or condition and the definitions herein
  relating thereto;

       (2)  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;

       (3)  a statement that, in the opinion of each such individual, 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

       (4)  a statement as to whether, in the opinion of each such
  individual, such condition or covenant has been complied with.

       SECTION 103.  Form of Documents Delivered to Trustee.
                     --------------------------------------

       In any case where several matters are required to be certified by,
or covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

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

       Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated (with
proper identification of each matter covered therein) and form one instrument.

                                      18

 
       SECTION 104.  Acts of Holders.
                     ---------------

       (a) Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Indenture to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by agents 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 and, where it is hereby expressly required, to the Company. Such
instrument or instruments (and the action embodied therein and evidenced
thereby) are herein sometimes referred to as the "Act" of the Holders signing
such instrument or instruments. Proof of execution of any such instrument or of
a writing appointing any such agent shall be sufficient for any purpose of this
Indenture and (subject to Section 601) conclusive in favor of the Trustee and
the Company, if made in the manner provided in this Section.

       (b)  The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him the execution thereof.  Where
such execution is by a signer acting in a capacity other than his individual
capacity, such certificate or affidavit shall also constitute sufficient proof
of authority.  The fact and date of the execution of any such instrument or
writing, or the authority of the Person executing the same, may also be proved
in any other manner that the Trustee deems sufficient.

       (c)  The principal amount and serial numbers of Securities held by
any Person, and the date of holding the same, shall be proved by the Security
Register.

       (d)  If the Company shall solicit from the Holders of Securities
any request, demand, authorization, direction, notice, consent, waiver or other
Act, the Company may, at its option, by or pursuant to a Board Resolution, fix
in advance a record date for the determination of Holders entitled to give such
request, demand, authorization, direction, notice, consent, waiver or other Act,
but the Company shall have no obligation to do so.  Notwithstanding TIA
Section 316(c), such record date shall be the record date specified in or
pursuant to such Board Resolution, which shall be a date not earlier than the
date 30 days prior to the first solicitation of Holders generally in connection
therewith and not later than the date such solicitation is completed.  If such a
record date is fixed, such request, demand, authorization, direction, notice,
consent, waiver or other Act may be given before or after such record date, but
only the Holders of record at the close of business on such record date shall be
deemed to be Holders for the purposes of determining whether Holders of the
requisite proportion of Outstanding Securities have authorized or agreed or
consented to such request, demand, authorization, direction, notice, consent,
waiver or other Act, and for that purpose the Outstanding Securities shall be
computed as of such record date; provided that no such authorization, agreement
or consent by the Holders on such record date shall be deemed effective unless
it shall become effective pursuant to the provisions of this Indenture not later
than eleven months after the record date.

       (e)  Any request, demand, authorization, direction, notice,
consent, waiver or other Act of the Holder of any Security shall bind every
future Holder of the same Security and the Holder of every Security issued upon
the registration of transfer thereof or in exchange therefor or in lieu thereof
in respect of anything done, omitted or suffered to be done by the Trustee or
the Company in reliance thereon, whether or not notation of such action is made
upon such Security.

                                      19

 
       SECTION 105.  Notices, etc., to Trustee and Company.
                     -------------------------------------

       Any request, demand, authorization, direction, notice, consent,
waiver or Act of Holders or other document provided or permitted by this
Indenture to be made upon, given or furnished to, or filed with,

       (1)  the Trustee by any Holder or by the Company shall be
  sufficient for every purpose hereunder if made, given, furnished or filed
  in writing to or with the Trustee at its Corporate Trust Office,
  Attention:  Corporate Market Services, or

       (2)  the Company by the Trustee or by any Holder shall be
  sufficient for every purpose hereunder (unless otherwise herein expressly
  provided) if in writing and mailed, first-class postage prepaid, to the
  Company addressed to it at the address of its principal office specified
  in the first paragraph of this Indenture, or at any other address
  previously furnished in writing to the Trustee by the Company.

       SECTION 106.  Notice to Holders; Waiver.
                     -------------------------

       Where this Indenture provides for notice of any event to Holders by
the Company or the Trustee, such notice shall be sufficiently given (unless
otherwise herein expressly provided) if in writing and mailed, first-class
postage prepaid, to each Holder affected by such event, at the address of such
Holder as it appears in the Security Register, not later than the latest date,
and not earlier than the earliest date, prescribed for the giving of such
notice.  In any case where notice to Holders 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.  Any notice mailed to a Holder in the manner herein prescribed
shall be conclusively deemed to have been received by such Holder, whether or
not such Holder actually receives such notice.  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 or by reason of any other cause, it shall be impracticable to mail
notice of any event to Holders 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 satisfactory to the Trustee shall be deemed to be a sufficient giving
of such notice for every purpose hereunder.

       SECTION 107.  Effect of Headings and Table of Contents.
                     ----------------------------------------

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

       SECTION 108.  Successors and Assigns.
                     ----------------------

       All covenants and agreements in this Indenture by the Company shall
bind its successors and assigns, whether so expressed or not.

       SECTION 109.  Separability Clause.
                     -------------------

       In case any provision in this Indenture or in the Securities shall
be invalid, illegal or unenforceable, the validity, legality and enforceability
of the remaining provisions shall not in any way be affected or impaired
thereby.

                                      20

 
       SECTION 110.  Benefits of Indenture.
                     ---------------------

       Nothing in this Indenture or in the Securities, express or implied,
shall give to any Person, other than the parties hereto, any Paying Agent, any
Security Registrar and their successors hereunder and the Holders any legal or
equitable right, remedy or claim under this Indenture.

       SECTION 111.  Governing Law.
                     -------------

       This Indenture and the Securities shall be governed by and construed
in accordance with the law of the State of New York.  

       SECTION 112.  Conflict with Trust Indenture Act.
                     ---------------------------------

       The Trust Indenture Act shall apply as a matter of contract to this
Indenture for purposes of interpretation, construction and defining the rights
and obligations hereunder.  If any provision hereof limits, qualifies or
conflicts with any provision of the Trust Indenture Act or another provision
which is required or deemed to be included in this Indenture by any of the
provisions of the Trust Indenture Act, such provision or requirement of the
Trust Indenture Act shall control.

       If any provision of this Indenture modifies or excludes any
provision of the Trust Indenture Act that may be so modified or excluded, the
latter provision shall be deemed to apply to this Indenture as so modified or
excluded, as the case may be.

       SECTION 113.  Legal Holidays.
                     --------------

       In any case where any Interest Payment Date, Redemption Date, or
Stated Maturity or Maturity of any Security shall not be a Business Day, then
(notwithstanding any other provision of this Indenture or of the Securities)
payment of principal (or premium, if any) or interest need not be made on such
date, but may be made on the next succeeding Business Day with the same force
and effect as if made on the Interest Payment Date or Redemption Date or at the
Stated Maturity or Maturity; provided that no interest shall accrue for the
period from and after such Interest Payment Date, Redemption Date, Stated
Maturity or Maturity, as the case may be.

       SECTION 114.  No Personal Liability of Directors, Officers,
                     --------------------------------------------
Employees and Stockholders.
- --------------------------

       No director, officer, employee, incorporator or stockholder of the
Company, as such, shall have any liability for any obligations of the Company
under the Securities or this Indenture or for any claim based on, in respect of,
or by reason of, such obligations or their creation, solely by reason of its
status as a director, officer, employee, incorporator or stockholder of the
Company.  By accepting a Security, each Holder waives and releases all such
liability (but only such liability).  The waiver and release are part of the
consideration for issuance of the Securities.  

       SECTION 115.  Independence of Covenants.
                     -------------------------

       All covenants and agreements in this Indenture shall be given
independent effect so that if a particular action or condition is not permitted
by any of such covenants, the fact that it would be permitted by an exception
to, or be otherwise within the limitations of, another covenant shall not avoid
the occurrence of a Default if such action is taken or condition exists.

       SECTION 116.  Exhibits.
                     --------

                                      21

 
       All exhibits attached hereto are by this reference made a part
hereof with the same effect as if herein set forth in full.

       SECTION 117.  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 118.  Duplicate Originals.
                     -------------------

       The parties may sign any number of copies of this Indenture.  Each
signed copy shall be an original, but all of them together represent the same
agreement.


                                  ARTICLE TWO

                                SECURITY FORMS

       SECTION 201.  Forms Generally.
                     ---------------

       The Securities and the Trustee's certificate of authentication with
respect thereto shall be in substantially the form set forth in Exhibit A
hereto, with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture, and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange or system on which the Securities may be listed or eligible
for trading or as may, consistently herewith, be determined by the officers
executing such Securities, as evidenced by their execution of the Securities. 
Any portion of the text of any Security may be set forth on the reverse thereof,
with an appropriate reference thereto on the face of the Security.

       The definitive Securities shall be printed, lithographed or engraved
on steel-engraved borders or may be produced in any other manner permitted by
the rules of any securities exchange or system on which the Securities may be
listed or eligible for trading, all as determined by the officers of the Company
executing such Securities, as evidenced by their execution of such Securities.


                                 ARTICLE THREE

                                THE SECURITIES

       SECTION 301.  Title and Terms.
                     ---------------

       The aggregate principal amount of Securities which may be
authenticated and delivered under this Indenture is limited to $250,000,000,
except for Securities authenticated and delivered upon registration of transfer
of, or in exchange for, or in lieu of, other Securities pursuant to Section 304,
305, 306, 906, 1010, 1018 or 1108.

       The Securities shall be known and designated as the "10 % Series B
Senior Notes Due 2007" of the Company.  Their Stated Maturity shall be April 1,
2007, and they shall bear interest at the rate of 10 % per annum from March 31,
1997, or from the most recent Interest Payment Date to which interest has been
paid or duly provided for, payable on October 1, 1997 and semiannually
thereafter on April 1 and October 1, in each year and at said Stated Maturity,
until the principal thereof is paid or duly provided for.  Interest will be
computed on the basis of a 360-day year comprised of twelve 30-day months.

                                      22

 
       Principal of, premium, if any, and interest on the Securities will
be payable, and the Securities may be exchanged or transferred, at the office or
agency of the Company in The City of New York, which, unless otherwise provided
by the Company, will be the offices of the Trustee.  At the option of the
Company, interest may be paid by check mailed to addresses of the Persons
entitled thereto as such addresses shall appear on the Security Register.

       The Securities shall be redeemable as provided in Article Eleven.

       At the election of the Company, the entire Debt on the Securities or
certain of the Company's obligations and covenants and certain Events of Default
thereunder may be defeased as provided in Article Twelve.

       The Securities will be senior unsecured obligations of the Company,
ranking pari passu in right of payment with all existing and future senior
unsecured Debt of the Company, and will be senior in right of payment to all
existing and future Subordinated Debt of the Company.

       SECTION 302.  Denominations.
                     -------------

       The Securities will be issued without coupons and in fully
registered form only, in minimum denominations of $1,000 principal amount and
integral multiples thereof.

       SECTION 303.  Execution, Authentication, Delivery and Dating.
                     ----------------------------------------------

       The Securities shall be executed on behalf of the Company by its
Chairman, its President or a Vice President, under its corporate seal reproduced
thereon and attested by its Secretary or an Assistant Secretary.  The signature
of any of these officers on the Securities may be manual or facsimile signatures
of the present or any future such authorized officer and may be imprinted or
otherwise reproduced on the Securities.

       Securities bearing the manual or facsimile signatures of individuals
who were at any time the proper officers of the Company shall bind the Company,
notwithstanding that such individuals or any of them have ceased to hold such
offices prior to the authentication and delivery of such Securities or did not
hold such offices at the date of such Securities.

       At any time and from time to time after the execution and delivery
of this Indenture, the Company may deliver Securities executed by the Company to
the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with such Company Order shall authenticate and deliver such Securities.

       Each Security shall be dated the date of its authentication.

       No Security shall be entitled to any benefit under this Indenture or
be valid or obligatory for any purpose unless there appears on such Security a
certificate of authentication substantially in the form provided for herein duly
executed by the Trustee by manual signature of an authorized signatory, and such
certificate upon any Security shall be conclusive evidence, and the only
evidence, that such Security has been duly authenticated and delivered hereunder
and is entitled to the benefits of this Indenture.

       The Trustee shall authenticate Securities for original issue in an
aggregate principal amount not to exceed $250,000,000 upon receipt of a Company
Order, which shall,  specify the amount of Securities to be authenticated, the
names of the persons in which such Securities shall be registered and the date
on which such Securities are to be authenticated and direct the Trustee to
authenticate such Securities together with an Officers' Certificate certifying

                                      23

 
that all conditions precedent to the issuance of such Securities contained
herein have been complied with.  The aggregate principal amount of Securities
Outstanding at any time shall not exceed $250,000,000, except as provided in
Section 304.

       Except as described below, the Securities will be deposited with, or
on behalf of, the Depository, and registered in the name of Cede & Co. as the
Depository's nominee in the form of a global note certificate substantially in
the form of Exhibit A (the "Global Security"), for credit to the respective
accounts of the beneficial owners of the Securities represented thereby.

       In case the Company, pursuant to Article Eight, shall be
consolidated or merged with or into any other Person or shall convey, transfer,
lease or otherwise dispose of its properties and assets substantially as an
entirety to any Person, and the successor Person resulting from such
consolidation, or surviving such merger, or into which the Company shall have
been merged, or the Person which shall have received a conveyance, transfer,
lease or other disposition as aforesaid, shall have executed an indenture
supplemental hereto with the Trustee pursuant to Article Eight, any of the
Securities authenticated or delivered prior to such consolidation, merger,
conveyance, transfer, lease or other disposition may, from time to time, at the
request of the successor Person, be exchanged for other Securities executed in
the name of the successor Person with such changes in phraseology and form as
may be appropriate, but otherwise in substance of like tenor as the Securities
surrendered for such exchange and of like principal amount; and the Trustee,
upon Company Request of the successor Person, shall authenticate and deliver
Securities as specified in such request for the purpose of such exchange.  If
Securities shall at any time be authenticated and delivered in any new name of a
successor Person pursuant to this Section in exchange or substitution for or
upon registration of transfer of any Securities, such successor Person, at the
option of the Holders but without expense to them, shall provide for the
exchange of all Securities at the time Outstanding for Securities authenticated
and delivered in such new name.

       SECTION 304.  Temporary Securities.
                     --------------------

       Pending the preparation of definitive Securities, the Company may
execute, and upon Company Order the Trustee shall authenticate and deliver,
temporary Securities which are printed, lithographed, typewritten, mimeographed
or otherwise produced, in any authorized denomination, substantially of the
tenor of the definitive Securities in lieu of which they are issued and with
such appropriate insertions, omissions, substitutions and other variations as
the officers executing such Securities may determine, as conclusively evidenced
by their execution of such Securities.

       If temporary Securities are issued, the Company will cause
definitive Securities to be prepared without unreasonable delay.  After the
preparation of definitive Securities, the temporary Securities shall be
exchangeable for definitive Securities upon surrender of the temporary
Securities at the office or agency of the Company designated for such purpose
pursuant to Section 1002, without charge to the Holder.  Upon surrender for
cancellation of any one or more temporary Securities, the Company shall execute
and the Trustee shall authenticate and deliver in exchange therefor a like
principal amount of definitive Securities of authorized denominations.  Until so
exchanged, the temporary Securities shall in all respects be entitled to the
same benefits under this Indenture as definitive Securities.

                                      24

 
       SECTION 305.  Registration, Registration of Transfer and Exchange.
                     ---------------------------------------------------

       The Company shall cause to be kept at the Corporate Trust Office of
the Trustee a register (the register maintained in such office and in any other
office or agency designated pursuant to Section 1002 being herein sometimes
referred to as the "Security Register") in which, subject to such reasonable
regulations as it may prescribe, the Company shall provide for the registration
of Securities and of transfers of Securities.  The Security Register shall be in
written form or any other form capable of being converted into written form
within a reasonable time.  At all reasonable times, the Security Register shall
be open to inspection by the Trustee.  The Trustee is hereby initially appointed
as security registrar (the "Security Registrar") for the purpose of registering
Securities and transfers of Securities as herein provided.

       Upon surrender for registration of transfer of any Security at the
office or agency of the Company designated pursuant to Section 1002, the Company
shall execute, and the Trustee shall authenticate and deliver, in the name of
the designated transferee or transferees, one or more new Securities of any
authorized denomination or denominations of a like aggregate principal amount.

       At the option of the Holder, Securities may be exchanged for other
Securities of any authorized denomination and of a like aggregate principal
amount, upon surrender of the Securities to be exchanged at such office or
agency.  Whenever any Securities are so surrendered for exchange, the Company
shall execute, and the Trustee shall authenticate and deliver, the Securities
which the Holder making the exchange is entitled to receive.

       All Securities issued upon any registration of transfer or exchange
of Securities shall be the valid obligations of the Company, evidencing the same
debt, and entitled to the same benefits under this Indenture, as the Securities
surrendered upon such registration of transfer or exchange.

       Every Security presented or surrendered for registration of transfer
or for exchange shall (if so required by the Company or the Security Registrar)
be duly endorsed, or be accompanied by a written instrument of transfer, in form
satisfactory to the Company and the Security Registrar, duly executed by the
Holder thereof or his attorney duly authorized in writing.

       No service charge shall be made for any registration of transfer or
exchange or redemption of Securities, but the Company may require payment of a
sum sufficient to cover any tax or other governmental charge that may be imposed
in connection with any registration of transfer or exchange of Securities, other
than exchanges pursuant to Section 304, 906, 1010, 1018 or 1108 not involving
any transfer.

       The Company shall not be required (i) to issue, register the
transfer of or exchange any Security during a period beginning at the opening of
business 15 days before the selection of Securities to be redeemed under
Section 1104 and ending at the close of business on the day of such mailing of
the relevant notice of redemption or (ii) to register the transfer of or
exchange any Security so selected for redemption in whole or in part, except the
unredeemed portion of any Security being redeemed in part.

       SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities.
                     ------------------------------------------------

       If (i) any mutilated Security is surrendered to the Trustee or
(ii) the Company and the Trustee receive evidence to their satisfaction of the
destruction, loss or theft of any Security, and there is delivered to the
Company and the Trustee such security or indemnity as may be required by them to
save each of them harmless, then, in the absence of notice to the Company or the
Trustee that such Security has been acquired by a bona fide purchaser, the

                                      25

 
Company shall execute and upon Company Order the Trustee shall authenticate and
deliver, in exchange for any such mutilated Security or in lieu of any such
destroyed, lost or stolen Security, a new Security of like tenor and principal
amount, bearing a number not contemporaneously outstanding.

       In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion may,
instead of issuing a new Security, pay such Security.

       Upon the issuance of any new Security under this Section, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

       Every new Security issued pursuant to this Section in lieu of any
mutilated, destroyed, lost or stolen Security shall constitute an original
additional contractual obligation of the Company, whether or not the mutilated,
destroyed, lost or stolen Security shall be at any time enforceable by anyone,
and shall be entitled to all benefits of this Indenture equally and
proportionately with any and all other Securities duly issued hereunder.

       The provisions of this Section are exclusive and shall preclude (to
the extent lawful) all other rights and remedies with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Securities.

       SECTION 307.  Payment of Interest; Interest Rights Preserved.
                     ----------------------------------------------

       Interest on any Security which is payable, and is punctually paid or
duly provided for, on any Interest Payment Date shall be paid to the Person in
whose name such Security (or one or more Predecessor Securities) is registered
at the close of business on the Regular Record Date for such interest at the
office or agency of the Company maintained for such purpose pursuant to
Section 1002; provided, however, that each installment of interest may at the
Company's option be paid by mailing a check for such interest, payable to or
upon the written order of the Person entitled thereto pursuant to Section 308,
to the address of such Person as it appears in the Security Register.

       Any interest on any Security which is payable, but is not punctually
paid or duly provided for, on any Interest Payment Date shall forthwith cease to
be payable to the Holder on the Regular Record Date by virtue of having been
such Holder, and such defaulted interest and (to the extent lawful) interest on
such defaulted interest at the rate borne by the Securities (such defaulted
interest and interest thereon herein collectively called "Defaulted Interest")
may be paid by the Company, at its election in each case, as provided in
paragraph (1) or (2) below:

       (1)  The Company may elect to make payment of any Defaulted
  Interest to the Persons in whose names the Securities (or their respective
  Predecessor Securities) are registered at the close of business on a
  Special Record Date for the payment of such Defaulted Interest, which
  shall be fixed in the following manner.  The Company shall notify the
  Trustee in writing of the amount of Defaulted Interest proposed to be paid
  on each Security and the date of the proposed payment, and at the same
  time the Company shall deposit with the Trustee an amount of money equal
  to the aggregate amount proposed to be paid in respect of such Defaulted
  Interest or shall make arrangements satisfactory to the Trustee for such
  deposit prior to the date of the proposed payment, such money when
  deposited to be held in trust for the benefit of the Persons entitled to
  such Defaulted Interest as in this clause provided.  Thereupon the Trustee
  shall fix a Special Record Date for the payment of such Defaulted Interest
  which shall be not more than 15 days and not less than 10 days prior to

                                      27

 
  the date of the proposed payment and not less than 10 days after the
  receipt by the Trustee of the notice of the proposed payment.  The Trustee
  shall promptly notify the Company of such Special Record Date, and in the
  name and at the expense of the Company, shall cause notice of the proposed
  payment of such Defaulted Interest and the Special Record Date therefor to
  be given in the manner provided for in Section 106, not less than 10 days
  prior to such Special Record Date.  Notice of the proposed payment of such
  Defaulted Interest and the Special Record Date therefor having been so
  given, such Defaulted Interest shall be paid to the Persons in whose names
  the Securities (or their respective Predecessor Securities) are registered
  at the close of business on such Special Record Date and shall no longer
  be payable pursuant to the following paragraph (2).

       (2)  The Company may make payment of any Defaulted Interest in any
  other lawful manner not inconsistent with the requirements of any
  securities exchange or system on which the Securities may be listed or
  eligible for trading, and upon such notice as may be required by such
  exchange or system, if, after notice given by the Company to the Trustee
  of the proposed payment pursuant to this clause, such manner of payment
  shall be deemed practicable by the Trustee.

       Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to interest accrued
and unpaid, and to accrue, which were carried by such other Security.

       SECTION 308.  Persons Deemed Owners.
                     ---------------------

       Prior to the due presentment of a Security for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee
may treat the Person in whose name such Security is registered as the owner of
such Security for the purpose of receiving payment of principal of (and premium,
if any) and (subject to Sections 305 and 307) interest on such Security and for
all other purposes whatsoever, whether or not such Security be overdue, and none
of the Company, the Trustee or any agent of the Company or the Trustee shall be
affected by notice to the contrary.

       SECTION 309.  Cancellation.
                     ------------

       All Securities surrendered for payment, redemption, registration of
transfer or exchange shall, if surrendered to any Person other than the Trustee,
be delivered to the Trustee and shall be promptly cancelled by it.  The Company
may at any time deliver to the Trustee for cancellation any Securities
previously authenticated and delivered hereunder which the Company may have
acquired in any manner whatsoever, and may deliver to the Trustee (or to any
other Person for delivery to the Trustee) for cancellation any Securities
previously authenticated hereunder which the Company has not issued and sold,
and all Securities so delivered shall be promptly cancelled by the Trustee.  If
the Company shall so acquire any of the Securities, however, such acquisition
shall not operate as a redemption or satisfaction of the indebtedness
represented by such Securities unless and until the same are surrendered to the
Trustee for cancellation.  No Securities shall be authenticated in lieu of or in
exchange for any Securities cancelled as provided in this Section, except as
expressly permitted by this Indenture.  All cancelled Securities held by the
Trustee shall be disposed of by the Trustee in accordance with its customary
procedures and certification of their disposal delivered to the Company unless
by Company Order the Company shall direct that cancelled Securities be returned
to it.

                                      27

 
       SECTION 310.  Computation of Interest.
                     -----------------------

       Interest on the Securities shall be computed on the basis of a
360-day year comprised of twelve 30-day months.

       SECTION 311.  CUSIP Number.
                     ------------

       The Company in issuing the Securities may use a "CUSIP" number (if
then generally in use), and if so, the Trustee may use the CUSIP numbers in
notices of redemption or exchange as a convenience to Holders; provided,
however, that any such notice may state that no representation is made as to the
correctness or accuracy of the CUSIP number printed in the notice or on the
Securities, and that reliance may be placed only on the other identification
numbers printed on the Securities.  The Company shall promptly notify the
Trustee in writing of any change in the CUSIP number of the Securities.

       SECTION 312.  Book-Entry Provisions for Global Securities.
                     -------------------------------------------

       (a)  The Global Securities initially shall (i) be registered in the
name of the Depository or the nominee of such Depository, (ii) be delivered to
the Trustee as custodian for such Depository and (iii) bear legends as set forth
in Exhibit A.

       Members of, or participants in, the Depository ("Agent Members")
shall have no rights under this Indenture with respect to any Global Security
held on their behalf by the Depository, or the Trustee as its custodian, or
under the Global Security, and the Depository may be treated by the Company, the
Trustee and any agent of the Company or the Trustee as the absolute owner of the
Global Security for all purposes whatsoever.  Notwithstanding the foregoing,
nothing herein shall prevent the Company, the Trustee or any agent of the
Company 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 governing
the exercise of the rights of a Holder of any Security.

       (b)  Transfers of Global Securities shall be limited to transfers
in whole, but not in part, to the Depository, its successors or their respective
nominees.  Interests of beneficial owners in a Global Security may be
transferred or exchanged for Physical Securities in accordance with the rules
and procedures of the Depository.  In addition, Physical Securities shall be
transferred to all beneficial owners in exchange for their beneficial interests
in a Global Security if (i) the Depository notifies the Company that it is
unwilling or unable to continue as a depository for such Global Security or if
at any time the Depository ceases to be a clearing agency registered under the
Exchange Act, and a successor depository is not appointed by the Company within
90 days, (ii) the Company executes and delivers to the Trustee a notice that
such Global Security shall be so transferable, registrable and exchangeable, and
such transfer shall be registrable, or (iii) there shall have occurred and be
continuing a Default or Event of Default with respect to the Securities
represented by such Global Security.

       (c)  In connection with any transfer or exchange of a portion of
the beneficial interest in any Global Security to beneficial owners pursuant to
paragraph (b), the Security Registrar shall (if one or more Physical Securities
are to be issued) reflect on its books and records the date and a decrease in
the principal amount of the Global Security in an amount equal to the principal
amount of the beneficial interest in the Global Security to be transferred, and
the Company shall execute, and the Trustee shall authenticate and deliver, one
or more Physical Securities of like tenor and principal amount of authorized
denominations.

                                      28

 
       (d)  In connection with the transfer of the Global Securities as an
entirety to beneficial owners pursuant to paragraph (b), the Global Securities
shall be deemed to be surrendered to the Trustee for cancellation, and the
Company shall execute, and the Trustee shall authenticate and deliver, to each
beneficial owner identified by the Depository in exchange for its beneficial
interest in the Global Securities, an equal aggregate principal amount of
Physical Securities of like tenor of authorized denominations.

       (e)  The Holder of any Global Security may grant proxies and
otherwise authorize any person, including Agent Members 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 Securities.

       SECTION 313.  [omitted]


                                 ARTICLE FOUR

                          SATISFACTION AND DISCHARGE

       SECTION 401.  Satisfaction and Discharge of Indenture.
                     ---------------------------------------

       This Indenture shall upon Company Request cease to be of further
effect (except as to surviving rights of registration of transfer or exchange of
Securities expressly provided for herein or pursuant hereto) and the Trustee, at
the expense of the Company, shall execute proper instruments acknowledging
satisfaction and discharge of this Indenture when

       (1)  either

            (a)  all Securities theretofore authenticated and delivered
       (other than (i) Securities which have been destroyed, lost or stolen
       and which have been replaced or paid as provided in Section 306 and
       (ii) Securities for whose payment money has theretofore been
       deposited in trust with the Trustee or any Paying Agent or
       segregated and held in trust by the Company and thereafter repaid to
       the Company or discharged from such trust as provided in
       Section 1003) have been delivered to the Trustee for cancellation;
       or

            (b)  all such Securities not theretofore delivered to the
       Trustee for cancellation

                 (i)  have become due and payable, or

                 (ii) will become due and payable at their Stated
            Maturity within one year, or

                 (iii)     are to be called for redemption within one year
            under arrangements satisfactory to the Trustee for the giving
            of notice of redemption by the Trustee in the name, and at the
            expense, of the Company,

       and the Company, in the case of (i), (ii) or (iii) above, has
       irrevocably deposited or caused to be deposited with the Trustee as
       trust funds in trust for such purpose an amount sufficient to pay
       and discharge the entire indebtedness on such Securities not
       theretofore delivered to the Trustee for cancellation, for principal
       (and premium, if any) and interest to the date of such deposit (in
       the case of Securities which have become due and payable) or to the
       Stated Maturity or Redemption Date, as the case may be;

                                      29

 
       (2)  the Company has paid or caused to be paid all other sums
  payable hereunder by the Company; and

       (3)  the Company has delivered to the Trustee 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.

       Notwithstanding the satisfaction and discharge of this Indenture,
the obligations of the Company to the Trustee under Section 607 and, if money
shall have been deposited with the Trustee pursuant to clause (1)(b) of this
Section 401, the obligations of the Trustee under Section 402 and the last
paragraph of Section 1003 shall survive.

       SECTION 402.  Application of Trust Money.
                     --------------------------

       Subject to the provisions of the last paragraph of Section 1003, all
money deposited with the Trustee pursuant to Section 401 shall be held in trust
and applied by it, in accordance with the provisions of the Securities and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal (and premium, if
any) and interest for whose payment such money has been deposited with the
Trustee; but such money need not be segregated from other funds except to the
extent required by law.


                                 ARTICLE FIVE

                                   REMEDIES

       SECTION 501.  Events of Default.
                     -----------------

       "Event of Default", wherever used herein, means any one of the
following events (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):

       (1)  default in the payment of the principal of (or premium, if
  any, on) any Security at its Maturity; or 

       (2)  default in the payment of any interest on any Security when it
  becomes due and payable, and continuance of such default for a period of
  30 days; or 

       (3)  default in the payment of principal and interest on any
  Security required to be purchased pursuant to an Offer to Purchase
  pursuant to Section 1010 or 1018; or

       (4)  default in the performance, or breach, of Section 801 or 1018;
  or

       (5)  default in the performance, or breach, of any covenant or
  warranty of the Company in this Indenture or in any Security (other than a
  covenant or warranty a default in whose performance or whose breach is
  elsewhere in this Section specifically dealt with), and continuance of
  such default or breach for a period of 60 days after there has been given,
  by registered or certified mail, to the Company by the Trustee or to the
  Company and the Trustee by the Holders of at least 25% in aggregate
  principal amount of the Outstanding Securities a written notice specifying

                                      30

 
  such default or breach and requiring it to be remedied and stating that
  such notice is a "Notice of Default" hereunder; or

       (6)  a default or defaults under any bond(s), debenture(s), note(s)
  or other evidence(s) of indebtedness by the Company or any Restricted
  Subsidiary or under any mortgage(s), indenture(s) or instrument(s) under
  which there may be issued or by which there may be secured or evidenced
  any indebtedness of such type by the Company or any such Restricted
  Subsidiary with a principal amount then outstanding, individually or in
  the aggregate, in excess of $10 million, whether such indebtedness now
  exists or shall hereafter be created, which default or defaults shall
  result in the acceleration of the payment of such indebtedness or shall
  constitute a failure to pay the principal of such indebtedness when due at
  the final maturity thereof, or shall have resulted in excess of $10
  million of indebtedness becoming or being declared due and payable prior
  to the date on which it would otherwise have become due and payable (after
  expiration of any applicable grace period); or

       (7)  a final judgment or final judgments for the payment of money
  are entered against the Company or any Restricted Subsidiary in an
  aggregate amount in excess of $10 million by a court or courts of
  competent jurisdiction, which judgment or judgments remain undischarged or
  unbonded for a period (during which execution shall not be effectively
  stayed) of 45 days after the right to appeal all such judgments has
  expired; or

       (8)  the entry of a decree or order by a court having jurisdiction
  in the premises adjudging the Company or any Restricted Subsidiary a
  bankrupt or insolvent, or approving as properly filed a petition seeking
  reorganization, arrangement, adjustment or composition of or in respect of
  the Company or any Restricted Subsidiary under the Federal Bankruptcy Code
  or any other applicable federal or state law, or appointing a receiver,
  liquidator, assignee, trustee or sequestrator (or other similar official)
  of the Company or any Restricted Subsidiary or of any substantial part of
  its property, or ordering the winding up or liquidation of its affairs,
  and the continuance of any such decree or order unstayed and in effect for
  a period of 60 consecutive days; or

       (9)  the institution by the Company or any Restricted Subsidiary of
  proceedings to be adjudicated a bankrupt or insolvent, or the consent by
  it to the institution of bankruptcy or insolvency proceedings against it,
  or the filing by it of a petition or answer or consent seeking
  reorganization or relief under the Federal Bankruptcy Code or any other
  applicable federal or state law, or the consent by it to the filing of any
  such petition or to the appointment of a receiver, liquidator, assignee,
  trustee or sequestrator (or other similar official) of the Company or any
  Restricted Subsidiary or of any substantial part of its property, or the
  making by it of an assignment for the benefit of creditors, or the
  admission by it in writing of its inability to pay its debts generally as
  they become due.

       SECTION 502.  Acceleration of Maturity; Rescission and Annulment.
                     --------------------------------------------------

       If an Event of Default (other than an Event of Default specified in
Section 501(8) or 501(9)) occurs and is continuing, then and in every such case
the Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities may declare the principal amount of all the Securities to
be due and payable immediately, by a notice in writing to the Company (and to
the Trustee if given by Holders), and upon any such declaration such principal
amount shall become immediately due and payable.  If an Event of Default
specified in Section 501(8) or 501(9) occurs and is continuing, then the

                                      31

 
principal amount of all the Securities shall ipso facto become and be
immediately due and payable without any declaration or other act on the part of
the Trustee or any Holder.

       At any time after a declaration of acceleration has been made and
before a judgment or decree for payment of the money due has been obtained by
the Trustee as hereinafter provided in this Article Five, the Holders of a
majority in principal amount of the Outstanding Securities, by written notice to
the Company and the Trustee, may rescind and annul such declaration and its
consequences if

       (1)  the Company has paid or deposited with the Trustee a sum
  sufficient to pay

            (A)  all overdue interest on all Outstanding Securities,

            (B)  all unpaid principal of (and premium, if any, on) any
       Outstanding Securities which has become due otherwise than by such
       declaration of acceleration, and interest on such unpaid principal
       at the rate borne by the Securities,

            (C)  to the extent that payment of such interest is lawful,
       interest on overdue interest at the rate borne by the Securities,
       and

            (D)  all sums paid or advanced by the Trustee hereunder and
       the reasonable compensation, expenses, disbursements and advances of
       the Trustee, its agents and counsel; and

       (2)  all Events of Default, other than the nonpayment of amounts of
  principal of (or premium, if any, on) Securities which have become due
  solely by such declaration of acceleration, have been cured or waived as
  provided in Section 513.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

       Notwithstanding the preceding paragraph, in the event that a
declaration of acceleration in respect of the Securities due to an Event of
Default specified in Section 501(6) shall have occurred and be continuing, such
declaration of acceleration shall be automatically annulled if the Debt that is
the subject of such Event of Default has been discharged or the holders thereof
have rescinded their declaration of acceleration in respect of such Debt, and
written notice of such discharge or rescission, as the case may be, shall have
been given to the Trustee by the Company and countersigned by the holders of
such Debt or a trustee, fiduciary or agent for such holders, within 30 days
after such declaration of acceleration in respect of the Securities, and no
other Event of Default has occurred during such 30-day period which has not been
cured or waived during such period.

       SECTION 503.  Collection of Indebtedness and Suits for Enforcement
                     ----------------------------------------------------
by Trustee.
- ----------

       The Company covenants that if

       (a)  default is made in the payment of any installment of interest
  on any Security when such interest becomes due and payable and such
  default continues for a period of 30 days, or

       (b)  default is made in the payment of the principal of (or
  premium, if any, on) any Security at the Maturity thereof,

                                      32

 
the Company will, upon demand of the Trustee, pay to the Trustee for the benefit
of the Holders of such Securities the whole amount then due and payable on such
Securities for principal (and premium, if any) and interest, and interest on any
overdue principal (and premium, if any) and, to the extent that payment of such
interest shall be legally enforceable, upon any overdue installment of interest,
at the rate borne by the Securities, and, in addition thereto, such further
amount as shall be sufficient to cover the costs and expenses of collection,
including the reasonable compensation, expenses, disbursements and advances of
the Trustee, its agents and counsel.

       If the Company fails to pay such amounts forthwith upon such demand,
the Trustee, in its own name as trustee of an express trust, may institute a
judicial proceeding for the collection of the sums so due and unpaid, may
prosecute such proceeding to judgment or final decree and may enforce the same
against the Company or any other obligor upon the Securities and collect the
moneys adjudged or decreed to be payable in the manner provided by law out of
the property of the Company or any other obligor upon the Securities, wherever
situated.

       If an Event of Default occurs and is continuing, the Trustee may in
its discretion proceed to protect and enforce its rights and the rights of the
Holders by such appropriate judicial proceedings as the Trustee shall deem most
effectual to protect and enforce any such rights, whether for the specific
enforcement of any covenant or agreement in this Indenture or in aid of the
exercise of any power granted herein, or to enforce any other proper remedy.

       SECTION 504.  Trustee May File Proofs of Claim.
                     --------------------------------
       In case of the pendency of any receivership, insolvency,
liquidation, bankruptcy, reorganization, arrangement, adjustment, composition or
other judicial proceeding relative to the Company or any other obligor upon the
Securities or the property of the Company or of such other obligor or their
creditors, the Trustee (irrespective of whether the principal of the Securities
shall then be due and payable as herein expressed or by declaration or otherwise
and irrespective of whether the Trustee shall have made any demand on the
Company for the payment of overdue principal, premium, if any, or interest)
shall be entitled and empowered, by intervention in such proceeding or
otherwise,

       (i)  to file and prove a claim for the whole amount of principal
  (and premium, if any) and interest owing and unpaid in respect of the
  Securities 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 the reasonable compensation, expenses, disbursements and
  advances of the Trustee and its agents and counsel) and of the Holders
  allowed in such judicial proceeding, and

       (ii) to collect and receive any moneys or other property payable or
  deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator or sequestrator (or
other similar official) in any such judicial proceeding is hereby authorized by
each Holder to make such payments to the Trustee and, in the event that the
Trustee shall consent to the making of such payments directly to the Holders, to
pay the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee and its agents and counsel, and any
other amounts due the Trustee under Section 607.

       Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the Securities

                                      33

 
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.

       SECTION 505. Trustee May Enforce Claims Without Possession of Securities.
                    -----------------------------------------------------------

       All rights of action and claims under this Indenture or the
Securities may be prosecuted and enforced by the Trustee without the possession
of any of the Securities or the production thereof in any proceeding relating
thereto, and any such proceeding instituted by the Trustee shall be brought in
its own name and as trustee of an express trust, and any recovery of judgment
shall, after provision for the payment of the reasonable compensation, expenses,
disbursements and advances of the Trustee and its agents and counsel, be for the
ratable benefit of the Holders of the Securities in respect of which such
judgment has been recovered.

       SECTION 506.  Application of Money Collected.
                     ------------------------------

       Any money collected by the Trustee pursuant to this Article Five
shall be applied in the following order, at the date or dates fixed by the
Trustee and, in case of the distribution of such money on account of principal
(or premium, if any) or interest, upon presentation of the Securities and the
notation thereon of the payment if only partially paid and upon surrender
thereof if fully paid:

       FIRST:  To the payment of all amounts due the Trustee under
  Section 607;

       SECOND:  To the payment of the amounts then due and unpaid for
  principal of (and premium, if any) and interest on the Securities in
  respect of which or for the benefit of which such money has been
  collected, ratably, without preference or priority of any kind, according
  to the amounts due and payable on such Securities for principal (and
  premium, if any) and interest, respectively; and

       THIRD:  The balance, if any, to the Person or Persons entitled
  thereto.

       SECTION 507.  Limitation on Suits.
                     -------------------

       No Holder of any Securities shall have any right to institute any
proceeding, judicial or otherwise, with respect to this Indenture, or for the
appointment of a receiver or trustee, or for any other remedy hereunder, unless

       (1)  such Holder has previously given written notice to the Trustee
  of a continuing Event of Default;

       (2)  the Holders of not less than 25% in aggregate principal amount
  of the Outstanding Securities shall have made written request to the
  Trustee to institute proceedings in respect of such Event of Default in
  its own name as Trustee hereunder;

       (3)  such Holder or Holders have offered to the Trustee indemnity
  reasonably satisfactory to it against the costs, expenses and liabilities
  to be incurred in compliance with such request;

       (4)  the Trustee for 60 days after its receipt of such notice,
  request and offer of indemnity has failed to institute any such
  proceeding; and

                                      34

 
       (5)  no direction inconsistent with such written request has been
  given to the Trustee during such 60-day period by the Holders of a
  majority or more in aggregate principal amount of the Outstanding
  Securities;

it being understood and intended that no one or more Holders shall have any
right in any manner whatsoever by virtue of, or by availing of, any provision of
this Indenture to affect, disturb or prejudice the rights of any other Holders,
or to obtain or to seek to obtain priority or preference over any other Holders
or to enforce any right under this Indenture, except in the manner herein
provided and for the equal and ratable benefit of all the Holders.

       SECTION 508.  Unconditional Right of Holders to Receive Principal,
                     ---------------------------------------------------
Premium and Interest.
- --------------------

       Notwithstanding any other provision in this Indenture, the Holder of
any Security shall have the right, which is absolute and unconditional, to
receive payment as provided herein (including, if applicable, Article Twelve)
and in such Security of the principal of (and premium, if any) and (subject to 
Section 307) interest on such Security on the respective Stated Maturities
expressed in such Security (or, in the case of redemption, on the Redemption
Date) and to institute suit for the enforcement of any such payment, and such
rights shall not be impaired without the consent of such Holder.

       SECTION 509.  Restoration of Rights and Remedies.
                     ----------------------------------

       If the Trustee or any Holder has instituted any proceeding to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Trustee and the Holders shall
be restored severally and respectively to their former positions hereunder and
thereafter all rights and remedies of the Trustee and the Holders shall continue
as though no such proceeding had been instituted.

       SECTION 510.  Rights and Remedies Cumulative.
                     ------------------------------

       Except as otherwise provided with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Securities in the last paragraph
of Section 306, no right or remedy herein conferred upon or reserved to the
Trustee or to the Holders 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.

       SECTION 511.  Delay or Omission Not Waiver.
                     ----------------------------

       No delay or omission of the Trustee or of any Holder of any Security
to exercise any right or remedy accruing upon any Event of Default shall impair
any such right or remedy or constitute a waiver of any such Event of Default or
an acquiescence therein.  Every right and remedy given by this Article Five or
by law to the Trustee or to the Holders may be exercised from time to time, and
as often as may be deemed expedient, by the Trustee or by the Holders, as the
case may be.

       SECTION 512.  Control by Holders.
                     ------------------

       The Holders of not less than a majority in aggregate principal
amount of the Outstanding Securities shall have the right to direct the time,

                                      35

 
method and place of conducting any proceeding for any remedy available to the
Trustee, or exercising any trust or power conferred on the Trustee, provided
that

       (1)  such direction shall not be in conflict with any rule of law
  or with this Indenture, 

       (2)  the Trustee may take any other action deemed proper by the
  Trustee which is not inconsistent with such direction, and

       (3)  the Trustee need not take any action which might involve it in
  personal liability or be unjustly prejudicial to the Holders not
  consenting.

       SECTION 513.  Waiver of Past Defaults.
                     -----------------------

       The Holders of not less than a majority in aggregate principal
amount of the Outstanding Securities may on behalf of the Holders of all the
Securities waive any past default hereunder and its consequences, except a
default

       (1)  in respect of the payment of the principal of (or premium, if
  any) or interest on any Security, or

       (2)  in respect of a covenant or provision hereof which under
  Article Nine cannot be modified or amended without the consent of the
  Holder of each Outstanding Security affected.

       Upon any such waiver, such default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured, 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 514.  Waiver of Stay or Extension Laws.
                     --------------------------------

       The Company covenants (to the extent that it may lawfully do so)
that it shall not at any time insist upon, or plead, or in any manner whatsoever
claim or take the benefit or advantage of, any stay or extension law wherever
enacted, now or at any time hereafter in force, which may affect the covenants
or the performance of this Indenture; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such law
and covenants that it shall not hinder, delay or impede the execution of any
power herein granted to the Trustee, but shall suffer and permit the execution
of every such power as though no such law had been enacted.


                                  ARTICLE SIX

                                  THE TRUSTEE

       SECTION 601.  Certain Duties and Responsibilities.
                     -----------------------------------

       (a)  Except during the continuance of an Event of Default,

       (1)  the Trustee undertakes to perform such duties and only such
  duties as are specifically set forth in this Indenture, and no implied
  covenants or obligations shall be read into this Indenture against the
  Trustee; and

       (2)  in the absence of bad faith on its part, the Trustee may
  conclusively rely, as to the truth of the statements and the correctness

                                      36

 
  of the opinions expressed therein, upon certificates or opinions furnished
  to the Trustee and conforming to the requirements of this Indenture; but,
  in the case of any such 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)  In case an Event of Default has occurred and is continuing,
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.

       (c)  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 willful misconduct, except that

       (1)  this paragraph (c) shall not be construed to limit the effect
  of paragraph (a) of this Section 601;

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

       (3)  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 the
  direction of the Holders of a majority in principal amount of the Out-
  standing Securities 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; and

       (4)  no provision of this Indenture shall require the Trustee to
  expend or risk its own funds or otherwise incur any financial liability in
  the performance of any of its duties hereunder, or in the exercise of any
  of its rights or powers, if it shall have reasonable grounds for believing
  that repayment of such funds or indemnity reasonably satisfactory to it
  against such risk or liability is not reasonably assured to it.

       (d)  Whether or not therein expressly so provided, every provision
of this Indenture relating to the conduct or affecting the liability of or
affording protection to the Trustee shall be subject to the provisions of this
Section 601.

       SECTION 602.  Notice of Default.
                     -----------------

       Within 60 days after the occurrence of any Default hereunder, the
Trustee shall transmit, in the manner and to the extent provided in TIA
Section 313(c), notice of such Default hereunder known to any Responsible
Officer of the Trustee, unless such Default shall have been cured or waived;
provided, however, that, except in the case of a Default in the payment of the
principal of (or premium, if any) or interest on any Security, 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 and/or
Responsible Officers of the Trustee in good faith determines that the
withholding of such notice is in the interest of the Holders; and provided
further that in the case of any Default of the character specified in
Section 501(5) no such notice to Holders shall be given until at least 30 days
after the occurrence thereof.

                                      37

 
       SECTION 603.  Certain Rights of Trustee.
                     -------------------------

       Subject to Section 601 and to the provisions of TIA Sections 315(a)
through 315(d):

       (1)  the Trustee may conclusively rely and shall be fully protected
  in acting or refraining from acting upon any resolution, certificate,
  statement, instrument, opinion, report, notice, request, direction,
  consent, order, bond, debenture, note, other evidence of indebtedness or
  other paper or document believed by it to be genuine and to have been
  signed or presented by the proper party or parties;

       (2)  any request or direction of the Company mentioned herein shall
  be sufficiently evidenced by a Company Request or Company Order and any
  resolution of the Board of Directors may be sufficiently evidenced by a
  Board Resolution;

       (3)  whenever in the administration of this Indenture the Trustee
  shall deem it desirable that a matter be proved or established prior to
  taking, suffering or omitting any action hereunder, the Trustee (unless
  other evidence be herein specifically prescribed) may, in the absence of
  bad faith on its part, receive and rely upon an Officers' Certificate;

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

       (5)  the Trustee shall be under no obligation to exercise any of
  the rights or powers vested in it by this Indenture at the request or
  direction of any of the Holders pursuant to this Indenture, unless such
  Holders shall have offered to the Trustee security or indemnity reasonably
  satisfactory to it against the costs, expenses and liabilities which might
  be incurred by it in compliance with such request or direction;

       (6)  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, direction, consent, order,
  bond, debenture, note, other evidence of indebtedness or other paper or
  document, but the Trustee, in its discretion, may make such further
  inquiry or investigation into such facts or matters as it may see fit,
  and, if the Trustee shall determine to make such further inquiry or
  investigation, it shall be entitled to examine the books, records and
  premises of the Company, personally or by agent or attorney;

       (7)  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 and the Trustee shall not be responsible for any misconduct or
  negligence on the part of any agent or attorney appointed with due care by
  it hereunder; 

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

       (9)  the Trustee shall have no duties, obligations or liability in
  connection with any Event of Default hereunder unless a Responsible
  Officer of the Trustee has knowledge thereof.


                                      38

 
       The Trustee shall not be required to expend or risk its own funds or
otherwise incur any financial liability in the performance of any of its duties
hereunder, or in the exercise of any of its rights or powers, if it shall have
reasonable grounds for believing that repayment of such funds or adequate
indemnity against such risk or liability is not reasonably assured to it.

       SECTION 604.  Trustee Not Responsible for Recitals or Issuance of
                     ---------------------------------------------------
Securities.
- ----------

       The recitals contained herein and in the Securities, except for the
Trustee's certificates of authentication, shall be taken as the statements of
the Company, and the Trustee assumes no responsibility for their correctness. 
The Trustee makes no representations as to the validity or sufficiency of this
Indenture or of the Securities, except that the Trustee represents that it is
duly authorized to execute and deliver this Indenture, authenticate the
Securities and perform its obligations hereunder.  The Trustee shall not be
accountable for the use or application by the Company of Securities or the
proceeds thereof.

       SECTION 605.  May Hold Securities.
                     -------------------
 
       The Trustee, any Paying Agent, any Security Registrar or any other
agent of the Company or of the Trustee, in its individual or any other capacity,
may become the owner or pledgee of Securities and, subject to TIA
Sections 310(b) and 311, may otherwise deal with the Company with the same
rights it would have if it were not Trustee, Paying Agent, Security Registrar or
such other agent.  If and when the Trustee shall be or become a creditor of the
Company (or any other obligor upon the Securities), the Trustee shall be subject
to the provisions of the Trust Indenture Act regarding the collection of claims
against the Company (or any such other obligor).

       SECTION 606.  Money Held in Trust.
                     -------------------

       Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required by law.  The Trustee shall be
under no liability for interest on any money received by it hereunder except as
otherwise agreed with the Company.

       SECTION 607.  Compensation and Reimbursement.
                     ------------------------------

       The Company agrees:

       (1)  to pay to the Trustee from time to time reasonable
  compensation for all services rendered by it hereunder (which compensation
  shall not be limited by any provision of law in regard to the compensation
  of a trustee of an express trust);

       (2)  except as otherwise expressly provided herein, to reimburse
  the Trustee upon its request for all reasonable expenses, disbursements
  and advances incurred or made by the Trustee in accordance with any
  provision of this Indenture (including the reasonable compensation and the
  expenses and disbursements of its agents and counsel), except any such
  expense, disbursement or advance as may be attributable to the Trustee's
  negligence or bad faith; and

       (3)  to indemnify the Trustee and its directors, officers,
  employees and agents for, and to hold them harmless against, any loss,
  liability or expense incurred without negligence or bad faith on the part
  of any of them, arising out of or in connection with the acceptance or
  administration of this trust, including the costs and expenses of
  defending itself or themselves against any claim or liability in

                                      39

 
  connection with the exercise or performance of any of its or their powers
  or duties hereunder.

       The obligations of the Company under this Section 607 to compensate
the Trustee, to pay or reimburse the Trustee for expenses, disbursements and
advances and to indemnify and hold harmless the Trustee shall constitute
additional indebtedness hereunder and shall survive the satisfaction and
discharge of this Indenture or the earlier resignation or removal of the
Trustee.  As security for the performance of such obligations of the Company,
the Trustee shall have a claim prior to the Securities upon all property and
funds held or collected by the Trustee as such, except funds held in trust for
the payment of principal of (and premium, if any) or interest on particular
Securities.

       When the Trustee incurs expenses or renders services in connection
with an Event of Default specified in Section 501(8) or (9), the expenses
(including the reasonable charges and expenses of its counsel) of and the
compensation for such services are intended to constitute expenses of
administration under any applicable federal or state bankruptcy, insolvency or
other similar law.

       The provisions of this Section 607 shall survive the termination of
this Indenture or the earlier resignation or removal of the Trustee.

       SECTION 608.  Corporate Trustee Required; Eligibility; Conflicting
                     ----------------------------------------------------
Interests.
- ---------

       (a)  There shall be at all times a Trustee hereunder which shall be
subject to and comply with the provisions of Section 310(a)(1) of the Trust
Indenture Act and shall have a combined capital and surplus of at least
$50,000,000.  If such Corporation publishes reports of condition at least
annually, pursuant to law or to the requirements of federal, state, territorial
or District of Columbia supervising or examining authority, then, for the
purposes of this Section 608, 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.  If at any time the Trustee
shall cease to be eligible in accordance with the provisions of this Section
608, it shall resign immediately in the manner and with the effect hereinafter
specified in this Article Six.

       (b)  The Trustee shall be subject to and comply with Section 310(b)
of the Trust Indenture Act. 

       SECTION 609.  Resignation and Removal; Appointment of Successor.
                     -------------------------------------------------
       (a)  No resignation or removal of the Trustee and no appointment of
a successor Trustee pursuant to this Article shall become effective until the
acceptance of appointment by the successor Trustee in accordance with the
applicable requirements of Section 610.

       (b)  The Trustee may resign at any time by giving written notice
thereof to the Company.  If the instrument of acceptance by a successor Trustee
required by Section 610 shall not have been delivered to the Trustee within 30
days after the giving of such notice of resignation, the resigning Trustee may
petition any court of competent jurisdiction for the appointment of a successor
Trustee.

       (c)  The Trustee may be removed at any time by Act of the Holders
of not less than a majority in aggregate principal amount of the Outstanding
Securities, delivered to the Trustee and to the Company.

                                      40

 
       (d)  If at any time:

       (1)  the Trustee shall fail to comply with the provisions of TIA
  Section 310(b) after written request therefor by the Company or by any
  Holder who has been a bona fide Holder of a Security for at least six
  months, or

       (2)  the Trustee shall cease to be eligible under Section 608(a)
  and shall fail to resign after written request therefor by the Company or
  by any Holder who has been a bona fide Holder of a Security for at least
  six months, or

       (3)  the Trustee shall become incapable of acting or shall be
  adjudged a bankrupt or insolvent or a receiver 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,

then, in any such case, (i) the Company, by a Board Resolution, may remove the
Trustee or (ii) subject to TIA Section 315(e), any Holder who has been a bona
fide Holder of a Security for at least six months may, on behalf of himself and
all others similarly situated, petition any court of competent jurisdiction for
the removal of the Trustee and the appointment of a successor Trustee.

       (e)  If the Trustee shall resign, be removed or become incapable of
acting, or if a vacancy shall occur in the office of Trustee for any cause, the
Company, by a Board Resolution, shall promptly appoint a successor Trustee.  If,
within one year after such resignation, removal or incapability, or the
occurrence of such vacancy, a successor Trustee shall be appointed by Act of the
Holders of a majority in aggregate principal amount of the Outstanding
Securities delivered to the Company and the retiring Trustee, the successor
Trustee so appointed shall, forthwith upon its acceptance of such appointment,
become the successor Trustee and supersede the successor Trustee appointed by
the Company.  If no successor Trustee shall have been so appointed by the
Company or the Holders and accepted appointment in the manner hereinafter
provided, any Holder who has been a bona fide Holder of a Security for at least
six months may, on behalf of himself and all others similarly situated, petition
any court of competent jurisdiction for the appointment of a successor Trustee.

       (f)  The Company shall give notice of each resignation and each
removal of the Trustee and each appointment of a successor Trustee to the
Holders of Securities in the manner provided for in Section 106.  Each notice
shall include the name of the successor Trustee and the address of its Corporate
Trust Office.

       (g)  The retiring Trustee shall not be liable for any of the acts
or omissions of any successor Trustee appointed hereunder.

       SECTION 610.  Acceptance of Appointment by Successor.
                     --------------------------------------

       Every successor Trustee appointed hereunder shall execute,
acknowledge and deliver to the Company and to the retiring Trustee an instrument
accepting such appointment, and thereupon the resignation or removal of the
retiring Trustee shall become effective and such successor Trustee, without any
further act, deed or conveyance, shall become vested with all the rights,
powers, trusts and duties of the retiring Trustee; but, on request of the
Company or the successor Trustee, such retiring Trustee shall, upon payment of
its charges, execute and deliver an instrument transferring to such successor
Trustee all the rights, powers and trusts of the retiring Trustee and shall duly
assign, transfer and deliver to such successor Trustee all property and money
held by such retiring Trustee hereunder.  Upon request of any such successor

                                      42

 
Trustee, the Company shall execute any and all instruments for more fully and
certainly vesting in and confirming to such successor Trustee all such rights,
powers and trusts.

       No successor Trustee shall accept its appointment unless at the time
of such acceptance such successor Trustee shall be qualified and eligible under
this Article.

       SECTION 611.  Merger, Conversion, Consolidation or Succession to
                     --------------------------------------------------
Business.
- --------

       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 all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided that such Corporation shall be otherwise qualified and eligible under
this Article Six, without the execution or filing of any paper or any further
act on the part of any of the parties hereto.  In case any Securities shall have
been authenticated, but not delivered, by the Trustee then in office, any
successor by merger, conversion or consolidation to such authenticating Trustee
may adopt such authentication and deliver the Securities so authenticated with
the same effect as if such successor Trustee had itself authenticated such
Securities.  In case at that time any of the Securities shall not have been
authenticated, any successor Trustee may authenticate such Securities either in
the name of any predecessor hereunder or in the name of the successor Trustee. 
In all such cases such certificates shall have the full force and effect which
this Indenture provides that the certificate of authentication of the Trustee
shall have; provided, however, that the right to adopt the certificate of
authentication of any predecessor Trustee or to authenticate Securities in the
name of any predecessor Trustee shall apply only to its successor or successors
by merger, conversion or consolidation.


                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

       SECTION 701.  Disclosure of Names and Addresses of Holders.
                     --------------------------------------------

       Every Holder of Securities, by receiving and holding the same,
agrees with the Company and the Trustee that none of the Company or the Trustee
or any agent of either of them shall be held accountable by reason of the
disclosure of any such information as to the names and addresses of the Holders
in accordance with TIA Section 312, 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 TIA
Section 312(b).

       SECTION 702.  Reports by Trustee.
                     ------------------

       Within 60 days after May 15 of each year commencing with the first
May 15 after the first issuance of Securities, the Trustee shall transmit to the
Holders, each stock exchange upon which the Securities are listed, and the
Commission, in the manner and to the extent provided in TIA Section 313, a brief
report dated as of such May 15 if required by TIA Section 313.

                                      42

 
       SECTION 703.  Reports by Company.
                     ------------------

       The Company shall file with the Trustee and deliver to the Holders
of Securities the reports and other information required to be provided by it
pursuant to Section 1008.


                                 ARTICLE EIGHT

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

       SECTION 801.  Company May Consolidate, etc., Only on Certain Terms.
                     ----------------------------------------------------
       The Company shall not, in a single transaction or a series of
related transactions, (i) consolidate with or merge into any other Person or
Persons or permit any other Person to consolidate with or merge into the Company
(other than a merger of Qwest Corporation into the Company in which the Company
shall be the surviving Person) or (ii) directly or indirectly, transfer, sell,
lease or otherwise dispose of all or substantially all of its assets to any
other Person or Persons, unless, in any such transaction specified in clause (i)
or (ii):

       (1)   in a transaction in which the Company is not the surviving
  Person or in which the Company sells, leases or otherwise disposes of all
  or substantially all of its assets to any other Person, the resulting,
  surviving or transferee Person (the "successor entity") is organized under
  the laws of the United States of America or any State thereof or the
  District of Columbia and shall expressly assume, by a supplemental
  indenture executed and delivered to the Trustee in form satisfactory to
  the Trustee, all of the Company's obligations under this Indenture;

       (2)   immediately before and after giving effect to such
  transaction and treating any Debt which becomes an obligation of the
  Company or a Restricted Subsidiary as a result of such transaction as
  having been Incurred by the Company or such Restricted Subsidiary at the
  time of the transaction, no Default or Event of Default shall have
  occurred and be continuing;

       (3)  immediately after giving effect to such transaction, the
  Consolidated Net Worth of the Company (or other successor entity to the
  Company) is equal to or greater than that of the Company immediately prior
  to the transaction;

       (4)  immediately after giving effect to such transaction and
  treating any Debt which becomes an obligation of the Company or a
  Restricted Subsidiary as a result of such transaction as having been
  Incurred by the Company or such Restricted Subsidiary at the time of the
  transaction, the Company (including any successor entity to the Company)
  could Incur at least $1.00 of additional Debt pursuant to the provisions
  of paragraph (a) of Section 1011;

       (5)  if, as a result of any such transaction, property or assets of
  the Company would become subject to a Lien prohibited by the provisions of
  Section 1015, the Company or the successor entity to the Company shall
  have secured the Securities as required by such Section 1015; and

       (6)  the Company has delivered to the Trustee an Officers'
  Certificate and an Opinion of Counsel, each in form and substance
  reasonably satisfactory to the Trustee, stating that such consolidation,
  merger, conveyance, transfer, lease or acquisition and, if a supplemental
  indenture is required in connection with such transaction, such

                                      43

 
  supplemental indenture, complies with this Article and that all conditions
  precedent herein provided for relating to such transaction have been
  complied with, and, with respect to such Officers' Certificate, setting
  forth the manner of determination of the Consolidated Net Worth, in
  accordance with clause (3) of this Section 801, of the Company or, if
  applicable, of the successor entity as required pursuant to the foregoing.

       SECTION 802.  Successor Substituted.
                     ---------------------

       Upon any consolidation of the Company with or merger of the Company
with or into any other Corporation or any conveyance, transfer or lease of the
properties and assets of the Company substantially as an entirety to any Person
or Persons in accordance with Section 801, the successor Person formed by such
consolidation or into which the Company is merged or to which such conveyance,
transfer or lease is made shall succeed to, and be substituted for, and may
exercise every right and power of, the Company under this Indenture with the
same effect as if such successor Person had been named as the Company herein,
and, in the event of any such conveyance or transfer, the Company (which term
shall for this purpose mean the Person named as the "Company" in the first
paragraph of this Indenture or any successor Person which shall have become such
in the manner described in Section 801), except in the case of a lease, shall be
discharged of all obligations and covenants under this Indenture and the
Securities and may be dissolved and liquidated.


                                 ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

       SECTION 901.  Supplemental Indentures Without Consent of Holders.
                     --------------------------------------------------
       Without the consent of any Holders, the Company, when authorized by
a Board Resolution, and the Trustee, at any time and from time to time, may
enter into one or more indentures supplemental hereto, in form and substance
satisfactory to the Trustee, for any of the following purposes:

       (1)  to evidence the succession of another Person to the Company
  and the assumption by any such successor of the covenants of the Company
  contained herein and in the Securities; or

       (2)  to add to the covenants of the Company for the benefit of the
  Holders or to surrender any right or power herein conferred upon the
  Company; or

       (3)  to add any additional Events of Default; or

       (4)  to evidence and provide for the acceptance of appointment
  hereunder by a successor Trustee pursuant to the requirements of
  Section 610; or

       (5)  to cure any ambiguity, to correct or supplement any provision
  herein which may be inconsistent with any other provision herein, or to
  make any other provisions with respect to matters or questions arising
  under this Indenture; provided that such action shall not adversely affect
  the interests of the Holders in any material respect; or

       (6)  to secure the Securities pursuant to the requirements of
  Section 1016.

                                      44

 
       SECTION 902.  Supplemental Indentures with Consent of Holders.
                     -----------------------------------------------

       With the consent of the Holders of not less than a majority in
aggregate principal amount of the Outstanding Securities, by Act of said Holders
delivered to the Company and the Trustee, the Company, when authorized by a
Board Resolution, and the Trustee may 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
modifying in any manner the rights of the Holders under this Indenture;
provided, however, that no such supplemental indenture shall, without the
consent of the Holder of each Outstanding Security affected thereby:

       (1)  change the Stated Maturity of the principal of or any
  installment of interest on any Security, or reduce the principal amount
  thereof (or premium, if any) or the rate of interest thereon or reduce the
  amount of the principal of the Securities that would be due and payable
  upon a declaration of acceleration of the Maturity thereof pursuant to
  Section 502 or the amount thereof provable in bankruptcy pursuant to
  Section 504, or change the coin or currency in which any Security or any
  premium or the interest thereon is payable, or impair the right to
  institute suit for the enforcement of any such payment after the Stated
  Maturity thereof (or, in the case of redemption, on or after the
  Redemption Date); or

       (2)  reduce the percentage in aggregate principal amount of the
  Outstanding Securities the consent of whose Holders is required for any
  such supplemental indenture, or the consent of whose Holders is required
  for any waiver of compliance with certain provisions of this Indenture or
  certain defaults hereunder and their consequences provided for in this
  Indenture; or

       (3)  modify any of the provisions of this Section 902 or
  Sections 513 and 1023, except to increase any such percentage or to
  provide that certain other provisions of this Indenture cannot be modified
  or waived without the consent of the Holder of each Outstanding Security
  affected thereby.

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

       SECTION 903.  Execution of Supplemental Indentures.
                     ------------------------------------

       In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article Nine or the modifications
thereby of the trusts created by this Indenture, the Trustee shall be entitled
to receive, and shall be fully protected in relying upon, an Opinion of Counsel
stating that the execution of such supplemental indenture is authorized or
permitted by this Indenture and an Officers' Certificate stating that all
conditions precedent to the execution of such supplemental indenture have been
fulfilled.  The Trustee may, but 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.

       SECTION 904.  Effect of Supplemental Indentures.
                     ---------------------------------

       Upon the execution of any supplemental indenture under this Article
Nine, this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes; and
every Holder of Securities theretofore or thereafter authenticated and delivered
hereunder shall be bound thereby.

                                      45

 
       SECTION 905.  Conformity with Trust Indenture Act.
                     -----------------------------------

       Every supplemental indenture executed pursuant to this Article Nine
shall conform as a matter of contract or law to the requirements of the Trust
Indenture Act as then in effect.

       SECTION 906.  Reference in Securities to Supplemental Indentures.
                     --------------------------------------------------

       Securities authenticated and delivered after the execution of any
supplemental indenture pursuant to this Article Nine may bear a notation in form
approved by the Trustee and the Company as to any matter provided for in such
supplemental indenture.  If the Company shall so determine, new Securities so
modified as to conform, in the opinion of the Trustee and the Company, to any
such supplemental indenture may be prepared and executed by the Company and
authenticated and delivered by the Trustee in exchange for Outstanding
Securities.

       SECTION 907.  Notice of Supplemental Indentures.
                     ---------------------------------

       Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of Section 902, the Company
shall give notice thereof to the Holders of each Outstanding Security affected,
in the manner provided for in Section 106, setting forth in general terms the
substance of such supplemental indenture.


                                  ARTICLE TEN

                                   COVENANTS

       SECTION 1001.  Payment of Principal, Premium, if Any, and Interest.
                      ---------------------------------------------------

       The Company covenants and agrees for the benefit of the Holders that
it shall duly and punctually pay the principal of (and premium, if any) and
interest on the Securities in accordance with the terms of the Securities and
this Indenture.

       SECTION 1002.  Maintenance of Office or Agency.
                      -------------------------------

       The Company shall maintain in The City of New York an office or
agency where Securities may be presented or surrendered for payment, where
Securities may be surrendered for registration of transfer or exchange and where
notices and demands to or upon the Company in respect of the Securities and this
Indenture may be served.  The Corporate Trust Office of the Trustee shall be
such office or agency of the Company, unless the Company shall designate and
maintain some other office or agency for one or more of such purposes.  The
Company shall give prompt written notice to the Trustee of any change in the
location of any such office or agency.  If at any time the Company shall fail to
maintain any such required office or agency or shall fail to furnish the Trustee
with the address thereof, such presentations, surrenders, notices and demands
may be made or served at the Corporate Trust Office of the Trustee, and the
Company hereby appoints the Trustee as its agent to receive all such
presentations, surrenders, notices and demands.

       The Company may also from time to time designate one or more other
offices or agencies (in or outside of The City of New York) where the Securities
may be presented or surrendered for any or all such purposes and may from time
to time rescind any such designation; provided, however, that no such
designation or rescission shall in any manner relieve the Company of its
obligation to maintain an office or agency in The City of New York for such
purposes.  The Company shall give prompt written notice to the Trustee of any

                                      46

 
such designation or rescission and any change in the location of any such other
office or agency.

       SECTION 1003.  Money for Security Payments to Be Held in Trust.
                      -----------------------------------------------

       If the Company shall at any time act as its own Paying Agent, it
shall, on or before each due date of the principal of (or premium, if any) or
interest on any of the Securities, segregate and hold in trust for the benefit
of the Persons entitled thereto a sum sufficient to pay the principal of (or
premium, if any) or interest so becoming due until such sums shall be paid to
such Persons or otherwise disposed of as herein provided and shall promptly
notify the Trustee of its action or failure so to act.

       Whenever the Company shall have one or more Paying Agents for the
Securities, it shall, on or before each due date of the principal of (or
premium, if any) or interest on any Securities, deposit with a Paying Agent a
sum sufficient to pay the principal (and premium, if any) or interest so
becoming due, such sum to be held in trust for the benefit of the Persons
entitled to such principal, premium or interest, and (unless such Paying Agent
is the Trustee) the Company will promptly notify the Trustee of such action or
any failure so to act.

       The Company shall cause each Paying Agent (other than the Trustee)
to execute and deliver to the Trustee an instrument in which such Paying Agent
shall agree with the Trustee, subject to the provisions of this Section 1003,
that such Paying Agent shall:

       (1)  hold all sums held by it for the payment of the principal of,
  premium, if any, or interest on Securities in trust for the benefit of the
  Persons entitled thereto until such sums shall be paid to such Persons or
  otherwise disposed of as herein provided;

       (2)  give the Trustee notice of any default by the Company (or any
  other obligor upon the Securities) in the making of any payment of
  principal, premium, if any, or interest; 

       (3)  at any time during the continuance of any such default, upon
  the written request of the Trustee, forthwith pay to the Trustee all sums
  so held in trust by such Paying Agent; and

       (4)  indemnify the Trustee and its officers, directors, employees
  and agents against any loss, cost or liability caused by, or incurred as a
  result of, such Paying Agent's acts or omissions.

       The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Company or such Paying Agent, such sums to be held by the Trustee
upon the same trusts as those upon which such sums were held by the Company or
such Paying Agent; and, upon such payment by any Paying Agent to the Trustee,
such Paying Agent shall be released from all further liability with respect to
such sums.

       Any money deposited with the Trustee or any Paying Agent, or then
held by the Company, in trust for the payment of the principal of, premium, if
any, or interest on any Security and remaining unclaimed for two years after
such principal, premium or interest has become due and payable shall be paid to
the Company on Company Request, or (if then held by the Company) shall be
discharged from such trust; and the Holder of such Security shall thereafter, as
an unsecured general creditor, look only to the Company for payment thereof, and
all liability of the Trustee or such Paying Agent with respect to such trust

                                      47

 
money, and all liability of the Company as trustee thereof, shall thereupon
cease; provided, however, that the Trustee or such Paying Agent, before being
required to make any such repayment, may at the expense of the Company cause to
be published once, in a newspaper published in the English language, customarily
published on each Business Day and of general circulation in the Borough of
Manhattan, The City of New York, notice that such money remains unclaimed and
that, after a date specified therein, which shall not be less than 30 days from
the date of such publication, any unclaimed balance of such money then remaining
will be repaid to the Company.

       SECTION 1004.  Corporate Existence.
                      -------------------

       Subject to Article Eight, the Company shall do or cause to be done
all things necessary to preserve and keep in full force and effect the corporate
existence, rights (charter and statutory) and franchises of the Company and each
Subsidiary; provided, however, that the Company shall not be required to
preserve, with respect to the Company, any such right or franchise or, with
respect to any Subsidiary (subject to all the other covenants in this
Indenture), any such corporate existence, right or franchise, if the Board of
Directors shall determine that the preservation thereof is no longer desirable
in the conduct of the business of the Company and its Subsidiaries as a whole
and that the loss thereof is not disadvantageous in any material respect to the
Holders.

       SECTION 1005.  Payment of Taxes and Other Claims.
                      ---------------------------------

       The Company shall pay or discharge or cause to be paid or
discharged, before the same shall become delinquent, (a) all taxes, assessments
and governmental charges levied or imposed upon the Company or any Restricted
Subsidiary or upon the income, profits or property of the Company or any
Restricted Subsidiary and (b) all lawful claims for labor, materials and
supplies which, if unpaid, might by law become a lien upon the property of the
Company or any Restricted Subsidiary; provided, however, that the Company shall
not be required to pay or discharge or cause to be paid or discharged any such
tax, assessment, charge or claim whose amount, applicability or validity is
being contested in good faith by appropriate proceedings.

       SECTION 1006.  Maintenance of Properties.
                      -------------------------

       The Company shall cause all properties owned by the Company or any
Restricted Subsidiary or used or held for use in the conduct of its business or
the business of any Restricted Subsidiary to be maintained and kept in good
condition, repair and working order and supplied with all necessary equipment
and shall cause to be made all necessary repairs, renewals, replacements,
betterments and improvements thereof, all as in the judgment of the Company may
be necessary so that the business carried on in connection therewith may be
properly and advantageously conducted at all times; provided, however, that
nothing in this Section 1006 shall prevent the Company from discontinuing the
maintenance of any of such properties if such discontinuance is, in the judgment
of the Company, desirable in the conduct of its business or the business of any
Subsidiary and not disadvantageous in any material respect to the Holders.

       SECTION 1007.  Insurance.
                      ---------

       The Company shall at all times keep all of its and its Restricted
Subsidiaries' properties which are of an insurable nature insured with insurers,
believed by the Company to be responsible, against loss or damage to the extent
that property of similar character is usually so insured by Corporations
similarly situated and owning like properties.

                                      48

 
       SECTION 1008.  Provision of Financial Statements.
                      ---------------------------------

       The Company shall provide the Trustee, the Initial Purchasers, the
Holders of the Securities and (upon request) prospective holders of the
Securities without cost with annual and quarterly reports and such other
information as is specified under Sections 13 and 15(d) of the Securities Act on
the date on which the Company is required to file the same with the Commission. 

       SECTION 1009.  Statement by Officers as to Default.
                      -----------------------------------

       (a)  The Company shall deliver to the Trustee, on the date of
delivery of each quarterly report to be delivered pursuant to Section 1008, a
brief certificate from the principal executive officer, principal financial
officer or principal accounting officer as to his or her knowledge of the
Company's compliance with all conditions and covenants under this Indenture. 
For purposes of this Section 1009(a), such compliance shall be determined
without regard to any period of grace or requirement of notice under this
Indenture.

       (b)  When any Default has occurred and is continuing under this
Indenture, or if the trustee for or the holder of any other evidence of Debt of
the Company or any Restricted Subsidiary gives any notice or takes any other
action with respect to a claimed default (other than with respect to Debt in the
principal amount of less than $5,000,000), the Company shall deliver to the
Trustee by registered or certified mail or by telegram, telex or facsimile
transmission an Officers' Certificate specifying such event, notice or other
action within five Business Days of its occurrence.

       SECTION 1010.  Purchase of Securities upon Change of Control.
                      ---------------------------------------------

       (a)  Upon the occurrence of a Change of Control, each Holder shall
have the right to require that the Company repurchase such Holder's Securities
in whole or in part in integral multiples of $1,000, in accordance with the
procedures set forth in this Section 1010 and this Indenture.

       (b)  Within 30 days of the occurrence of a Change of Control, the
Company shall mail an Offer with respect to an Offer to Purchase all Outstanding
Securities at a price in cash equal to 101% of the principal amount of the
Securities plus accrued and unpaid interest thereon and premium, if any, to the
purchase date.  Installments of interest whose Stated Maturity is on or prior to
the Purchase Date shall be payable to the Holders of such Securities, or one or
more Predecessor Securities, registered as such at the close of business on the
relevant Record Dates according to their terms and the provisions of Section
307.  Each Holder shall be entitled to tender all or any portion of the
Securities owned by such Holder pursuant to the Offer to Purchase, subject to
the requirement that any portion of a Security tendered must be tendered in an
integral multiple of $1,000 principal amount.  

       (c)  The Company and the Trustee shall perform their respective
obligations for the Offer to Purchase as specified in the Offer.  Prior to the
Purchase Date, the Company shall (i) accept for payment Securities or portions
thereof tendered pursuant to the Offer, (ii) deposit with the Paying Agent (or,
if the Company is acting as its own Paying Agent, segregate and hold in trust as
provided in Section 1003) money sufficient to pay the purchase price of all
Securities or portions thereof so accepted and (iii) deliver or cause to be
delivered to the Trustee all Securities so accepted together with an Officers'
Certificate stating the Securities or portions thereof accepted for payment by
the Company.  The Paying Agent shall promptly mail or deliver to Holders of
Securities so accepted payment in an amount equal to the Purchase Price, and the
Trustee shall promptly authenticate and mail or deliver to such Holders a new
Security or Securities equal in principal amount to any unpurchased portion of

                                      49

 
the Security surrendered as requested by the Holder.  Any Security not accepted
for payment shall be promptly mailed or delivered by the Company to the Holder
thereof.  

       (d)  A "Change of Control" shall be deemed to have occurred at such
time as (i) a Rating Decline shall have occurred and (ii) either (A) the sale,
conveyance, transfer or lease of all or substantially all of the assets of the
Company to any Person or any Persons acting together that would constitute a
"group" (a "Group") for purposes of Section 13(d) of the Exchange Act, together
with any Affiliates or Related Persons thereof, other than any Permitted Holder
or any Restricted Subsidiary, shall have occurred; (B) any Person or Group,
together with any Affiliates or Related Persons thereof, other than any
Permitted Holder or any Restricted Subsidiary, shall beneficially own (within
the meaning of Rule 13d-3 under the Exchange Act, except that a Person shall be
deemed to have beneficial ownership of all shares that such Person has the right
to acquire, whether such right is exercisable immediately or only after the
passage of time) at least 50% of the aggregate voting power of all classes of
Voting Stock of the Company at a time when Permitted Holders own less than or
equal to 25% of the aggregate voting power of all classes of Voting Stock of the
Company; or (C) during any period of two consecutive years, Continuing Directors
cease for any reason to constitute a majority of the Board of Directors then in
office.

       (e)  In the event that the Company makes an Offer to Purchase the
Securities, the Company shall comply with any applicable securities laws and
regulations, including any applicable requirements of Section 14(e) of, and Rule
14e-1 under, the Exchange Act.

       SECTION 1011.  Limitation on Consolidated Debt.  
                      -------------------------------

       (a)  The Company shall not, and shall not permit any Restricted
Subsidiary to, Incur any Debt, unless, after giving effect to the application of
the proceeds thereof, no Default or Event of Default would occur as a
consequence of such Incurrence or be continuing following such Incurrence and
either (i) the ratio of (A) the aggregate consolidated principal amount of Debt
of the Company outstanding as of the most recent available quarterly or annual
balance sheet, after giving pro forma effect to the Incurrence of such Debt and
any other Debt Incurred or repaid since such balance sheet date and the receipt
and application of the proceeds thereof, to (B) Consolidated Cash Flow Available
for Fixed Charges for the four full fiscal quarters next preceding the
Incurrence of such Debt for which consolidated financial statements are
available, determined on a pro forma basis as if any such Debt had been Incurred
and the proceeds thereof had been applied at the beginning of such four fiscal
quarters, would be less than 5.5 to 1.0 for Debt Incurred on or prior to April
1, 2000 and 5.0 to 1.0 for Debt Incurred thereafter, or (ii) the Company's
Consolidated Capital Ratio as of the most recent available quarterly or annual
balance sheet, after giving pro forma effect to the Incurrence of such Debt and
any other Debt Incurred or repaid since such balance sheet date and the receipt
and application of the proceeds thereof, is less than 2.0 to 1.0.

       (b)  Notwithstanding the foregoing limitation, the Company and any
Restricted Subsidiary may Incur any and all of the following (each of which
shall be given independent effect):

       (i)  Debt under the Securities, this Indenture and any Restricted
  Subsidiary Guarantee;

       (ii) (A) Debt Incurred subsequent to March 31, 1997 under Credit
  Facilities in an aggregate principal amount at any time outstanding not to
  exceed $150 million plus (B) Debt Incurred subsequent to March 31, 1997
  under one or more Credit Facilities that are revolving credit facilities

                                      50

 
  in an aggregate principal amount at any time outstanding not to exceed the
  greater of (x) $100 million or (y) 85% of Eligible Receivables;

       (iii)  Purchase Money Debt, provided that the amount of such Purchase
  Money Debt does not exceed 100% of the cost of the construction,
  installation, acquisition or improvement of the applicable
  Telecommunications Assets;

       (iv)   Debt owed by the Company to any Restricted Subsidiary of the
  Company or Debt owed by a Restricted Subsidiary of the Company to the
  Company or a Restricted Subsidiary of the Company; provided, however, that
  upon either (x) the transfer or other disposition by such Restricted
  Subsidiary or the Company of any Debt so permitted to a Person other than
  the Company or another Restricted Subsidiary of the Company or (y) the
  issuance (other than directors' qualifying shares), sale, lease, transfer
  or other disposition of shares of Capital Stock (including by
  consolidation or merger) of such Restricted Subsidiary to a Person other
  than the Company or another such Restricted Subsidiary, the provisions of
  this clause (iv) shall no longer be applicable to such Debt and such Debt
  shall be deemed to have been Incurred by the issuer thereof at the time of
  such transfer or other disposition;

       (v)    Debt Incurred to renew, extend, refinance, defease or refund
  (each, a "refinancing") the Securities or Debt of the Company Incurred
  pursuant to clause (iii) of this paragraph (b), in an aggregate principal
  amount not to exceed the aggregate principal amount of and accrued
  interest on the Debt so refinanced plus the amount of any premium required
  to be paid in connection with such refinancing pursuant to the terms of
  the Debt so refinanced or the amount of any premium reasonably determined
  by the Board of Directors as necessary to accomplish such refinancing by
  means of a tender offer or privately negotiated repurchase, plus the
  expenses of the Company Incurred in connection with such refinancing;
  provided, however, that Debt the proceeds of which are used to refinance
  the Securities or Debt which is pari passu to the Securities or Debt which
  is subordinate in right of payment to the Securities shall only be
  permitted under this clause (v) if (A) in the case of any refinancing of
  the Securities or Debt which is pari passu to the Securities, the
  refinancing Debt is made pari passu to the Securities or constitutes
  Subordinated Debt, and, in the case of any refinancing of Subordinated
  Debt, the refinancing Debt constitutes Subordinated Debt, and (B) in any
  case, the refinancing Debt by its terms, or by the terms of any agreement
  or instrument pursuant to which such Debt is issued, (x) does not provide
  for payments of principal of such Debt at Stated Maturity or by way of a
  sinking fund applicable thereto or by way of any mandatory redemption,
  defeasance, retirement or repurchase thereof by the Company (including any
  redemption, retirement or repurchase which is contingent upon events or
  circumstances, but excluding any retirement required by virtue of the
  acceleration of any payment with respect to such Debt upon any event of
  default thereunder), in each case prior to the time the same are required
  by the terms of the Debt being refinanced, and (y) does not permit
  redemption or other retirement (including pursuant to an offer to purchase
  made by the Company) of such Debt at the option of the holder thereof
  prior to the time the same are required by the terms of the Debt being
  refinanced, other than a redemption or other retirement at the option of
  the holder of such Debt (including pursuant to an offer to purchase made
  by the Company) which is conditioned upon a change of control pursuant to
  provisions substantially similar to those described under Section 1010;

       (vi)   Debt consisting of Permitted Interest Rate and Currency
  Protection Agreements;

                                      51

 
       (vii)     Debt secured by Receivables originated by the Company or any
  Restricted Subsidiary and related assets, provided that such Debt is
  nonrecourse to the Company and any of its other Restricted Subsidiaries
  and provided further that Receivables shall not be available at any time
  to secure Debt of the Company under this clause (vii) to the extent that
  they are used at such time as the basis for the Incurrence of Debt in
  excess of $100 million pursuant to clause (ii)(B)(y) of this paragraph
  (b); and

       (viii)    Debt not otherwise permitted to be Incurred pursuant to
  clauses (i) through (vii) above, which, together with any other
  outstanding Debt Incurred pursuant to this clause (viii), has an aggregate
  principal amount not in excess of $25 million at any time outstanding. 

       SECTION 1012.  Limitation on Debt and Preferred Stock of Restricted
                      ----------------------------------------------------
Subsidiaries.  
- ------------

       The Company shall not permit any Restricted Subsidiary that is not a
Guarantor to Incur any Debt or issue any Preferred Stock except any and all of
the following (each of which shall be given independent effect):

       (i)  Restricted Subsidiary Guarantees;

       (ii) Debt of Restricted Subsidiaries under Credit Facilities
  permitted to be Incurred pursuant to clause (ii) of paragraph (b) of
  Section 1011;

       (iii)      Purchase Money Debt of Restricted Subsidiaries permitted to
  be Incurred pursuant to clause (iii) of paragraph (b) of Section 1011;

       (iv) Debt owed by a Restricted Subsidiary of the Company to the
  Company or a Restricted Subsidiary of the Company permitted to be Incurred
  pursuant to clause (iv) of paragraph (b) of Section 1011;

       (v)  Debt of Restricted Subsidiaries consisting of Permitted
  Interest Rate and Currency Protection Agreements permitted to be Incurred
  pursuant to clause (vi) of paragraph (b) of Section 1011;

       (vi) Debt of Restricted Subsidiaries secured by Receivables
  originated by the Company or any Restricted Subsidiary and related assets
  permitted to be Incurred pursuant to clause (vii) of paragraph (b) of
  Section 1011;

       (vii)     Debt of Restricted Subsidiaries permitted to be Incurred
  pursuant to clause (viii) of paragraph (b) of Section 1011;

       (viii)    Preferred Stock issued to and held by the Company or a
  Restricted Subsidiary;

       (ix) Debt Incurred or Preferred Stock issued by a Person prior to
  the time (A) such Person became a Restricted Subsidiary, (B) such Person
  merges into or consolidates with a Restricted Subsidiary or (C) another
  Restricted Subsidiary merges into or consolidates with such Person (in a
  transaction in which such Person becomes a Restricted Subsidiary), which
  Debt or Preferred Stock was not Incurred or issued in anticipation of such
  transaction and was outstanding prior to such transaction; and

       (x)  Debt or Preferred Stock which is exchanged for, or the
  proceeds of which are used to renew, extend, refinance, defease, refund or
  redeem, any Debt of a Restricted Subsidiary permitted to be Incurred
  pursuant to clause (iii) of this Section 1012 or any Debt or Preferred

                                      52

 
  Stock of a Restricted Subsidiary permitted to be Incurred pursuant to
  clause (ix) of this Section 1012 (or any extension or renewal thereof)
  (for purposes hereof, a "refinancing"), in an aggregate principal amount,
  in the case of Debt, or with an aggregate liquidation preference, in the
  case of Preferred Stock, not to exceed the aggregate principal amount of
  the Debt so refinanced or the aggregate liquidation preference of the
  Preferred Stock so refinanced, plus the amount of any premium required to
  be paid in connection with such refinancing pursuant to the terms of the
  Debt or Preferred Stock so refinanced or the amount of any premium
  reasonably determined by the Company as necessary to accomplish such
  refinancing by means of a tender offer or privately negotiated repurchase,
  plus the amount of expenses of the Company and the applicable Restricted
  Subsidiary Incurred in connection therewith, and provided the Debt or
  Preferred Stock Incurred or issued upon such refinancing, by its terms, or
  by the terms of any agreement or instrument pursuant to which such Debt or
  Preferred Stock is Incurred or issued, (x) does not provide for payments
  of principal or liquidation value at the Stated Maturity of such Debt or
  Preferred Stock or by way of a sinking fund applicable to such Debt or
  Preferred Stock or by way of any mandatory redemption, defeasance,
  retirement or repurchase of such Debt or Preferred Stock by the Company or
  any Restricted Subsidiary (including any redemption, retirement or
  repurchase which is contingent upon events or circumstances, but excluding
  any retirement required by virtue of acceleration of such Debt upon an
  event of default thereunder), in each case prior to the time the same are
  required by the terms of the Debt or Preferred Stock being refinanced and
  (y) does not permit redemption or other retirement (including pursuant to
  an offer to purchase made by the Company or a Restricted Subsidiary) of
  such Debt or Preferred Stock at the option of the holder thereof prior to
  the Stated Maturity of the Debt or Preferred Stock being refinanced, other
  than a redemption or other retirement at the option of the holder of such
  Debt or Preferred Stock (including pursuant to an Offer to Purchase made
  by the Company or a Restricted Subsidiary) which is conditioned upon the
  change of control of the Company pursuant to provisions substantially
  similar to those contained in Section 1010, and provided further that, in
  the case of any exchange or redemption of Preferred Stock of a Restricted
  Subsidiary, such Preferred Stock may only be exchanged for or redeemed
  with Preferred Stock of such Restricted Subsidiary.

       SECTION 1013.  Limitation on Restricted Payments.  
                      ---------------------------------

       The Company (i) shall not, and shall not permit any Restricted
Subsidiary to, directly or indirectly, declare or pay any dividend, or make any
distribution, in respect of its Capital Stock or to the holders thereof,
excluding any dividends or distributions which are made solely to the Company or
a Restricted Subsidiary (and, if such Restricted Subsidiary is not a Wholly
Owned Subsidiary, to the other stockholders of such Restricted Subsidiary on a
pro rata basis) or any dividends or distributions payable solely in shares of
its Capital Stock (other than Disqualified Stock) or in options, warrants or
other rights to acquire its Capital Stock (other than Disqualified Stock);
(ii) shall not, and shall not permit any Restricted Subsidiary to, purchase,
redeem or otherwise retire or acquire for value (x) any Capital Stock of the
Company, any Restricted Subsidiary or any Related Person of the Company (other
than a permitted refinancing) or (y) any options, warrants or rights to purchase
or acquire shares of Capital Stock of the Company, any Restricted Subsidiary or
any Related Person of the Company or any securities convertible or exchangeable
into shares of Capital Stock of the Company, any Restricted Subsidiary or any
Related Person of the Company (other than a permitted refinancing), except, in
any such case, any such purchase, redemption or retirement or acquisition for
value paid to the Company or a Restricted Subsidiary (or, in the event of any
such purchase, redemption or other retirement or acquisition for value with
respect to a Restricted Subsidiary that is not a Wholly Owned Subsidiary, paid

                                      53

 
to the Company or a Restricted Subsidiary, or to the other stockholders of such
Restricted Subsidiary that is not a Wholly Owned Subsidiary, on a pro rata
basis); (iii) shall not make, or permit any Restricted Subsidiary to make, any
Investment in, or payment on a Guarantee of any obligation of, any Person, other
than the Company or a Restricted Subsidiary; and (iv) shall not, and shall not
permit any Restricted Subsidiary to, redeem, defease, repurchase, retire or
otherwise acquire or retire for value, prior to any scheduled maturity,
repayment or sinking fund payment, Debt of the Company which is subordinate in
right of payment to the Securities (other than a permitted refinancing) (each of
clauses (i) through (iv) being a "Restricted Payment") if:  (1) an Event of
Default, or an event that with the passing of time or the giving of notice, or
both, would constitute an Event of Default, shall have occurred and be
continuing, or (2) upon giving effect to such Restricted Payment, the Company
could not Incur at least $1.00 of additional Debt pursuant to the terms of
paragraph (a) of Section 1011, or (3) upon giving effect to such Restricted
Payment, the aggregate of all Restricted Payments from March 31, 1997 exceeds
the sum of:  (a) 50% of cumulative Consolidated Net Income (or, in the event
that Consolidated Net Income shall be negative, 100% of such negative amount)
since the end of the last full fiscal quarter prior to March 31, 1997 through
the last day of the last full fiscal quarter ending at least 45 days prior to
the date of such Restricted Payment, (b) plus $5 million, (c) less, in the case
of any Designation with respect to a Restricted Subsidiary that was made after
March 31, 1997, an amount equal to the Designation Amount with respect to such
Restricted Subsidiary, (d) plus, in the case of any Revocation made after
March 31, 1997, an amount equal to the lesser of the Designation Amount with
respect to the Subsidiary with respect to which such Designation was made or the
Fair Market Value of the Investment of the Company and its Restricted
Subsidiaries in such Subsidiary at the time of Revocation; provided, however,
that the Company or a Restricted Subsidiary of the Company may make any
Restricted Payment with the aggregate net cash proceeds received after March 31,
1997 as capital contributions to the Company or from the issuance (other than to
a Subsidiary) of Capital Stock (other than Disqualified Stock) of the Company
and warrants, rights or options on Capital Stock (other than Disqualified Stock)
of the Company and the principal amount of Debt of the Company that has been
converted into Capital Stock (other than Disqualified Stock and other than by a
Subsidiary) of the Company after March 31, 1997.

       Notwithstanding the foregoing limitation, (i) the Company and any
Restricted Subsidiary may make Permitted Investments; (ii) the Company may pay
any dividend on Capital Stock of any class of the Company within 60 days after
the declaration thereof if, on the date when the dividend was declared, the
Company could have paid such dividend in accordance with the foregoing
provisions; (iii) the Company may repurchase any shares of its Common Stock or
options to acquire its Common Stock from Persons who were formerly directors,
officers or employees of the Company or any of its Subsidiaries or Affiliates,
provided that the aggregate amount of all such repurchases made pursuant to this
clause (iii) shall not exceed $1 million in any twelve-month period; (iv) the
Company and any Restricted Subsidiary may refinance any Debt otherwise permitted
by clause (v) of paragraph (b) of Section 1011 or clause (x) of Section 1012;
and (v) the Company and any Restricted Subsidiary may retire or repurchase any
Capital Stock of the Company or of any Restricted Subsidiary in exchange for, or
out of the proceeds of the substantially concurrent sale (other than to a
Subsidiary of the Company) of, Capital Stock (other than Disqualified Stock) of
the Company.

       SECTION 1014.  Limitation on Dividend and Other Payment Restrictions
                      -----------------------------------------------------
Affecting Restricted Subsidiaries.  
- ---------------------------------

       (a)  The Company shall not, and shall not permit any Restricted
Subsidiary to, directly or indirectly, create or otherwise cause or suffer to
exist or become effective any consensual encumbrance or restriction on the

                                      54

 
ability of any Restricted Subsidiary (i) to pay dividends (in cash or otherwise)
or make any other distributions in respect of its Capital Stock owned by the
Company or any other Restricted Subsidiary or to pay any Debt or other
obligation owed to the Company or any other Restricted Subsidiary; (ii) to make
loans or advances to the Company or any other Restricted Subsidiary; or (iii) to
transfer any of its property or assets to the Company or any other Restricted
Subsidiary.

       (b)  Notwithstanding the foregoing limitation, the Company may, and
may permit any Restricted Subsidiary to, create or otherwise cause or suffer to
exist any such encumbrance or restriction (i) pursuant to any agreement in
effect on March 31, 1997; (ii) any customary encumbrance or restriction
applicable to a Restricted Subsidiary that is contained in an agreement or
instrument governing or relating to Debt contained in any Credit Facilities or
Purchase Money Debt, provided that the provisions of such agreement permit the
payment of interest and mandatory payment or prepayment of principal pursuant to
the terms of this Indenture and the Securities and other Debt that is solely an
obligation of the Company, but provided further that such agreement may
nevertheless contain customary net worth, leverage, invested capital and other
financial covenants, customary covenants regarding the merger of or sale of all
or any substantial part of the assets of the Company or any Restricted
Subsidiary, customary restrictions on transactions with Affiliates, and
customary subordination provisions governing Debt owed to the Company or any
Restricted Subsidiary; (iii) pursuant to an agreement relating to any Acquired
Debt, which encumbrance or restriction is not applicable to any Person, or the
properties or assets of any Person, other than the Person so acquired; (iv)
pursuant to an agreement effecting a renewal, refunding, permitted refinancing
or extension of Debt Incurred pursuant to an agreement referred to in clause
(i), (ii) or (iii) of this paragraph (b), provided, however, that the provisions
contained in such renewal, refunding, permitted refinancing or extension
agreement relating to such encumbrance or restriction are no more restrictive in
any material respect than the provisions contained in the agreement the subject
thereof; (v) in the case of clause (iii) of paragraph (a) of this Section 1014,
restrictions contained in any security agreement (including a Capital Lease
Obligation) securing Debt of the Company or a Restricted Subsidiary otherwise
permitted under this Indenture, but only to the extent such restrictions
restrict the transfer of the property subject to such security agreement; (vi)
in the case of clause (iii) of paragraph (a) of this Section 1014, customary
nonassignment provisions entered into in the ordinary course of business in
leases and other agreements and customary restrictions contained in asset sale
agreements limiting the transfer of such property or assets pending the closing
of such sale; (vii) any restriction with respect to a Restricted Subsidiary
imposed pursuant to an agreement which has been entered into for the sale or
disposition of all or substantially all of the Capital Stock or assets of such
Restricted Subsidiary, provided that the consummation of such transaction would
not result in a Default or an Event of Default, that such restriction terminates
if such transaction is not consummated and that the consummation or abandonment
of such transaction occurs within one year of the date such agreement was
entered into; (viii) pursuant to applicable law; and (ix) pursuant to this
Indenture and the Securities.

       SECTION 1015.  Limitation on Liens.  
                      -------------------

       The Company shall not, and shall not permit any Restricted
Subsidiary to, Incur or suffer to exist any Lien on or with respect to any
property or assets now owned or acquired after March 31, 1997 to secure any Debt
without making, or causing such Restricted Subsidiary to make, effective
provision for securing the Securities (x) equally and ratably with such Debt as
to such property for so long as such Debt will be so secured or (y) in the event
such Debt is Debt of the Company which is subordinate in right of payment to the

                                      55

 
Securities, prior to such Debt as to such property for so long as such Debt will
be so secured.

       The foregoing restrictions shall not apply to: (i) Liens existing on
March 31, 1997 and securing Debt outstanding on March 31, 1997; (ii) Liens in
favor of the Company or any Restricted Subsidiary; (iii) Liens to secure the
Securities; (iv) Liens to secure Restricted Subsidiary Guarantees; (v) Liens to
secure Debt under Credit Facilities permitted to be Incurred pursuant to clause
(ii) of paragraph (b) of Section 1011; (vi) Liens on real or personal property
of the Company or a Restricted Subsidiary constructed, installed, acquired or
constituting improvements made after the date of original issuance of the
Securities to secure Purchase Money Debt permitted to be Incurred pursuant to
clause (iii) of paragraph (b) of Section 1011, provided, however, that (a) the
principal amount of any Debt secured by such a Lien does not exceed 100% of such
purchase price or cost of construction, installation or improvement of the
property subject to such Lien, (b) such Lien attaches to such property prior to,
at the time of or within 270 days after the acquisition, the completion of
construction, installation or improvement or the commencement of operation of
such property and (c) such Lien does not extend to or cover any property other
than the specific item of property (or portion thereof) acquired, constructed,
installed or constituting the improvements financed by the proceeds of such
Purchase Money Debt; (vii) Liens to secure Acquired Debt, provided, however,
that (a) such Lien attaches to the acquired asset prior to the time of the
acquisition of such asset and (b) such Lien does not extend to or cover any
other asset; (viii) Liens to secure Debt Incurred to extend, renew, refinance or
refund (or successive extensions renewals, refinancings or refundings), in whole
or in part, Debt secured by any Lien referred to in the foregoing clauses (i),
(iii), (iv), (v), (vi) and (vii) of this Section 1015 so long as such Lien does
not extend to any other property and the principal amount of Debt so secured is
not increased except as otherwise permitted under clause (v) of paragraph (b) of
Section 1011 or clause (x) of Section 1012; (ix) Liens to secure debt consisting
of Permitted Interest Rate and Currency Protection Agreements permitted to be
Incurred pursuant to clause (vi) of paragraph (b) of Section 1011; (x) Liens to
secure Debt secured by Receivables permitted to be Incurred pursuant to clause
(vii) of paragraph (b) of Section 1011; (xi) Liens to secure Debt of Restricted
Subsidiaries permitted to be Incurred pursuant to clause (viii) of paragraph (b)
of Section 1011; (xii) Liens not otherwise permitted by the foregoing clauses
(i) through (xi) in an amount not to exceed 5% of the Company's Consolidated
Tangible Assets; and (xiii) Permitted Liens.

       SECTION 1016.  Limitation on Issuances of Certain Guarantees by, and
                      -----------------------------------------------------
Debt Securities of, Restricted Subsidiaries.  
- -------------------------------------------

       The Company shall not (i) permit any Restricted Subsidiary to,
directly or indirectly, guarantee any Debt Securities of the Company or (ii)
permit any Restricted Subsidiary to issue any Debt Securities unless, in either
such case, such Restricted Subsidiary simultaneously executes and delivers a
Restricted Subsidiary Guarantee providing for a Guarantee of payment of the
Securities.

       SECTION 1017.  Limitation on Sale and Leaseback Transactions.  
                      ---------------------------------------------

       The Company shall not, and shall not permit any Restricted
Subsidiary to, directly or indirectly, enter into, assume, Guarantee or
otherwise become liable with respect to any Sale and Leaseback Transaction,
other than a Sale and Leaseback Transaction between the Company or a Restricted
Subsidiary on the one hand and a Restricted Subsidiary or the Company on the
other hand, unless (i) the Company or such Restricted Subsidiary would be
entitled to Incur a Lien to secure Debt by reason of the provisions of Section
1015, equal in amount to the Attributable Value of the Sale and Leaseback
Transaction, without equally and ratably securing the Securities and (ii) the

                                      56

 
Sale and Leaseback Transaction is treated as an Asset Disposition and all of the
conditions of Section 1018 (including the provisions concerning the application
of Net Available Proceeds) are satisfied with respect to such Sale and Leaseback
Transaction, treating all of the consideration received in such Sale and
Leaseback Transaction as Net Available Proceeds for purposes of such Section
1018.

       SECTION 1018.  Limitation on Asset Dispositions.  
                      --------------------------------

       The Company shall not, and shall not permit any Restricted
Subsidiary to, make any Asset Disposition unless:  (i) the Company or the
Restricted Subsidiary, as the case may be, receives consideration for such
disposition at least equal to the Fair Market Value for the assets sold or
disposed of as determined by the Board of Directors in good faith and evidenced
by a Board Resolution; and (ii) at least 75% of the consideration for such
disposition consists of cash or cash equivalents or the assumption of Debt of
the Company (other than Debt that is subordinated to the Securities) or of the
Restricted Subsidiary and release from all liability on the Debt assumed.  If
the aggregate of Net Available Proceeds within any twelve-month period exceeds
$5 million, then all such Net Available Proceeds shall be applied within 360
days of the last such Asset Disposition (1) first, to the permanent repayment or
reduction of Debt then outstanding under any Credit Facility, to the extent such
agreements would require such application or prohibit payments pursuant to
clause (2) following; (2) second, to the extent of remaining Net Available
Proceeds, to make an Offer to Purchase Outstanding Securities at a price in cash
equal to 100% of the principal amount of the Securities plus accrued and unpaid
interest thereon and premium, if any, to the purchase date and, to the extent
required by the terms thereof, any other Debt of the Company that is pari passu
with the Securities at a price no greater than 100% of the principal amount
thereof plus accrued and unpaid interest to the purchase date (or 100% of the
accreted value plus accrued and unpaid interest and premium, if any, to the
purchase date in the case of original issue discount Debt); (3) third, to the
extent of any remaining Net Available Proceeds following the completion of the
Offer to Purchase, to the repayment of other Debt of the Company or Debt of a
Restricted Subsidiary, to the extent permitted under the terms thereof; and (4)
fourth, to the extent of any remaining Net Available Proceeds, to any other use
as determined by the Company which is not otherwise prohibited by this
Indenture.

       SECTION 1019.  Limitation on Issuances and Sales of Capital Stock of
                      -----------------------------------------------------
Restricted Subsidiaries.  
- -----------------------

       The Company shall not, and shall not permit any Restricted
Subsidiary to, issue, transfer, convey, sell or otherwise dispose of any shares
of Capital Stock of a Restricted Subsidiary or securities convertible or
exchangeable into, or options, warrants, rights or any other interest with
respect to, Capital Stock of a Restricted Subsidiary to any Person other than
the Company or a Restricted Subsidiary except:  (i) a sale of all of the Capital
Stock of such Restricted Subsidiary owned by the Company and any Restricted
Subsidiary that complies with the provisions of Section 1018 to the extent such
provisions apply; (ii) in a transaction that results in such Restricted
Subsidiary becoming a Permitted Joint Venture, provided (x) such transaction
complies with the provisions of Section 1018 to the extent such provisions apply
and (y) the Company's remaining Investment in such Permitted Joint Venture would
have been permitted as a new Investment under the provisions of Section 1013;
(iii) the transfer, conveyance, sale or other disposition of shares required by
applicable law or regulation; (iv) if required, the issuance, transfer,
conveyance, sale or other disposition of directors' qualifying shares; or (v)
Disqualified Stock issued in exchange for, or upon conversion of, or the
proceeds of the issuance of which are used to redeem, refinance, replace or
refund, shares of Disqualified Stock of such Restricted Subsidiary, provided

                                      57

 
that the amounts of the redemption obligations of such Disqualified Stock shall
not exceed the amounts of the redemption obligations of, and such Disqualified
Stock shall have redemption obligations no earlier than those required by, the
Disqualified Stock being exchanged, converted, redeemed, refinanced, replaced or
refunded.

       SECTION 1020.  Transactions with Affiliates and Related Persons.
                      ------------------------------------------------

       The Company shall not, and shall not permit any Restricted
Subsidiary to, enter into any transaction (or series of related transactions)
with an Affiliate or Related Person of the Company (other than the Company or a
Restricted Subsidiary), including any Investment, unless such transaction is on
terms no less favorable to the Company or such Restricted Subsidiary than those
that could be obtained in a comparable arm's-length transaction with an entity
that is not an Affiliate or Related Person and is in the best interests of the
Company or such Restricted Subsidiary, provided that the Company or any
Restricted Subsidiary may enter into:  (i) transactions pursuant to the
Company's tax sharing agreement entered into with Anschutz Company existing at
March 31, 1997, provided that any amendment of, supplement to or substitute for
such agreement is on terms that are no less favorable to the Company or such
Restricted Subsidiary than such existing agreement; (ii) transactions pursuant
to employee compensation arrangements approved by the Board of Directors, either
directly or indirectly; and (iii) Receivables Sales between the Company or a
Restricted Subsidiary and an Affiliate of the Company or such Restricted
Subsidiary, provided that such Receivables Sales satisfy the provisions of
clauses (i) and (ii) of Section 1018.  For any transaction that involves in
excess of $10 million but less than or equal to $15 million, the Company shall
deliver to the Trustee an Officers' Certificate stating that the transaction
satisfies the above criteria.  For any transaction that involves in excess of
$15 million, a majority of the disinterested members of the Board of Directors
shall determine that the transaction satisfies the above criteria and shall
evidence such a determination by a Board Resolution or, in the event that there
shall not be disinterested members of the Board of Directors with respect to the
transaction, the Company shall file with the Trustee a written opinion stating
that the transaction satisfies the above criteria from an investment banking
firm of national standing in the United States which, in the good faith judgment
of the Board of Directors, is independent with respect to the Company and its
Affiliates and qualified to perform such task.

       SECTION 1021.  Limitation on Designations of Unrestricted
                      ------------------------------------------
Subsidiaries.  
- ------------

       The Company shall not designate any Subsidiary of the Company (other
than a newly created Subsidiary in which no Investment has previously been made)
as an Unrestricted Subsidiary (a "Designation") unless:

       (a)  no Default or Event of Default shall have occurred and be
  continuing at the time of or after giving effect to such Designation;

       (b)  immediately after giving effect to such Designation, the
  Company would be able to Incur $1.00 of Debt under paragraph (a) of
  Section 1011; and

       (c)  the Company would not be prohibited under any provision of
  this Indenture from making an Investment at the time of Designation
  (assuming the effectiveness of such Designation) in an amount (the
  "Designation Amount") equal to the Fair Market Value of the net Investment
  of the Company or any other Restricted Subsidiary in such Restricted
  Subsidiary on such date.
                                      58

 
       In the event of any such Designation, the Company shall be deemed to
have made an Investment constituting a Restricted Payment pursuant to Section
1013 for all purposes of this Indenture in the Designation Amount.  In addition,
neither the Company nor any Restricted Subsidiary shall at any time (x) provide
credit support for, or a guarantee of, any Debt of any Unrestricted Subsidiary
(including any undertaking, agreement or instrument evidencing such Debt),
provided that the Company or a Restricted Subsidiary may pledge Capital Stock or
Debt of any Unrestricted Subsidiary on a nonrecourse basis such that the pledgee
has no claim whatsoever against the Company other than to obtain such pledged
property, (y) be directly or indirectly liable for any Debt of any Unrestricted
Subsidiary or (z) be directly or indirectly liable for any Debt which provides
that the holder thereof may (upon notice, lapse of time or both) declare a
default thereon or cause the payment thereof to be accelerated or payable prior
to its final scheduled maturity upon the occurrence of a default with respect to
any Debt of any Unrestricted Subsidiary (including any right to take enforcement
action against such Unrestricted Subsidiary), except in the case of clause (x)
or (y) to the extent permitted under Section 1013 or 1020.

       A Designation may be revoked (a "Revocation") by a Board Resolution,
provided that the Company shall not make any Revocation unless:

       (a)  no Default or Event of Default shall have occurred and be
  continuing at the time of and after giving effect to such Revocation; and

       (b)  all Liens and Debt of such Unrestricted Subsidiary outstanding
  immediately following such Revocation would, if Incurred at such time,
  have been permitted to be Incurred at such time for all purposes of this
  Indenture.

       All Designations and Revocations must be evidenced by Board
Resolutions certifying compliance with the foregoing provisions.

       SECTION 1022.  No Repayment of Existing Parent Company Advances with
                      -----------------------------------------------------
the Proceeds of the Securities.
- ------------------------------

       The Company shall not apply any portion of the proceeds of the
offering of the Securities toward the repayment of advances made to the Company
or any of its subsidiaries by any parent company of the Company outstanding at
March 31, 1997.

       SECTION 1023.  Waiver of Certain Covenants.
                      ---------------------------

       The Company may omit in any particular instance to comply with any
term, provision or condition set forth in Sections 1007 through 1022, inclusive,
if before or after the time for such compliance the Holders of at least a
majority in principal amount of the Outstanding Securities, by Act of such
Holders, waive such compliance in such instance with such term, provision or
condition, but no such waiver shall extend to or affect such term, provision or
condition except to the extent so expressly waived, and, until such waiver shall
become effective, the obligations of the Company and the duties of the Trustee
in respect of any such term, provision or condition shall remain in full force
and effect.

       SECTION 1024.  Trustee Not to Monitor Performance.
                      ----------------------------------

                                      59

 
       The Trustee shall have no duty to confirm or monitor the performance
by the Company of its duties pursuant to the covenants set forth in this Article
Ten.


                                ARTICLE ELEVEN

                           REDEMPTION OF SECURITIES

       SECTION 1101.  Right of Redemption.
                      -------------------

       The Securities will be subject to redemption at the option of the
Company, in whole or in part, at any time or from time to time on or after April
1, 2002, upon not less than 30 nor more than 60 days' prior notice, subject to
the conditions and at the redemption prices (expressed as percentages of
principal amount) set forth in the form of Security, plus accrued and unpaid
interest thereon (if any) to the Redemption Date.

       SECTION 1102.  Applicability of Article.
                      ------------------------
 
       Redemption of Securities at the election of the Company or
otherwise, as permitted or required by any provision of this Indenture, shall be
made in accordance with such provision and this Article.

       SECTION 1103.  Election to Redeem; Notice to Trustee.
                      -------------------------------------

       The election of the Company to redeem any Securities pursuant to
Section 1101 shall be evidenced by a Board Resolution.  In case of any
redemption at the election of the Company, the Company shall, at least 60 days
prior to the Redemption Date fixed by the Company (unless a shorter notice shall
be satisfactory to the Trustee), notify the Trustee of such Redemption Date and
of the principal amount of Securities to be redeemed and shall deliver to the
Trustee such documentation and records as shall enable the Trustee to select the
Securities to be redeemed pursuant to Section 1104.

       SECTION 1104.  Selection by Trustee of Securities to Be Redeemed.
                      -------------------------------------------------

       If less than all the Securities are to be redeemed, the particular
Securities to be redeemed shall be selected not more than 60 days prior to the
Redemption Date by the Trustee, from the Outstanding Securities not previously
called for redemption, by such method as the Trustee shall deem fair and
appropriate and which may provide for the selection for redemption of portions
of the principal of Securities; provided, however, that no such partial
redemption shall reduce the portion of the principal amount of a Security not
redeemed to less than $1,000.

       The Trustee shall promptly notify the Company in writing of the
Securities selected for redemption and, in the case of any Securities selected
for partial redemption, the principal amount thereof to be redeemed.

       For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to redemption of Securities shall relate, in
the case of any Security redeemed or to be redeemed only in part, to the portion
of the principal amount of such Security which has been or is to be redeemed.

       SECTION 1105.  Notice of Redemption.
                      --------------------

       Notice of redemption shall be given in the manner provided for in
Section 106 not less than 30 nor more than 60 days prior to the Redemption Date,
to each Holder of Securities to be redeemed.

                                      60

 
       Each notice of redemption shall state:

       (1)  the Redemption Date,

       (2)  the Redemption Price and the amount of accrued interest to the
  Redemption Date payable as provided in Section 1107, if any,

       (3)  if less than all Outstanding Securities are to be redeemed,
  the identification (and, in the case of a partial redemption, the
  principal amounts) of the particular Securities to be redeemed,

       (4)  in case any Security is to be redeemed in part only, that on
  and after the Redemption Date, upon surrender of such Security, the Holder
  will receive, without charge, a new Security or Securities of authorized
  denominations for the principal amount thereof remaining unredeemed,

       (5)  that on the Redemption Date the Redemption Price (and accrued
  interest, if any, to the Redemption Date payable as provided in
  Section 1107) will become due and payable upon each such Security, or the
  portion thereof, to be redeemed, and that interest thereon will cease to
  accrue on and after said date, and

       (6)  the place or places where such Securities are to be presented
  and surrendered for payment of the Redemption Price and accrued interest,
  if any.

       Notice of redemption of Securities to be redeemed at the election of
the Company shall be given by the Company or, at the Company's request, by the
Trustee in the name and at the expense of the Company.

       SECTION 1106.  Deposit of Redemption Price.
                      ---------------------------

       Prior to any Redemption Date, the Company shall deposit with the
Trustee or with a Paying Agent (or, if the Company is acting as its own Paying
Agent, segregate and hold in trust as provided in Section 1003) an amount of
money sufficient to pay the Redemption Price of, and accrued interest on, all
the Securities which are to be redeemed on that date.

       SECTION 1107.  Securities Payable on Redemption Date.
                      -------------------------------------

       Notice of redemption having been given as aforesaid, the Securities
so to be redeemed shall, on the Redemption Date, become due and payable at the
Redemption Price therein specified (together with accrued interest, if any, to
the Redemption Date), and from and after such date (unless the Company shall
default in the payment of the Redemption Price and accrued interest) such
Securities shall cease to bear interest.  Upon surrender of any such Security
for redemption in accordance with said notice, such Security shall be paid by
the Company at the Redemption Price, together with accrued interest, if any, to
the Redemption Date; provided, however, that installments of interest whose
Stated Maturity is on or prior to the Redemption Date shall be payable to the
Holders of such Securities, or one or more Predecessor Securities, registered as
such at the close of business on the relevant Record Dates according to their
terms and the provisions of Section 307.

       If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal (and premium, if any) shall,
until paid, bear interest from the Redemption Date at the rate borne by the
Securities.

                                      61

 
       SECTION 1108.  Securities Redeemed in Part.
                      ---------------------------

       Any Security which is to be redeemed only in part shall be
surrendered at the office or agency of the Company maintained for such purpose
pursuant to Section 1002 (with, if the Company or the Trustee so requires, due
endorsement by, or a written instrument of transfer in form satisfactory to the
Company and the Trustee duly executed by, the Holder thereof or such Holder's
attorney duly authorized in writing), and the Company shall execute, and the
Trustee shall authenticate and deliver to the Holder of such Security without
service charge, a new Security or Securities, of any authorized denomination as
requested by such Holder, in aggregate principal amount equal to and in exchange
for the unredeemed portion of the principal of the Security so surrendered.


                                ARTICLE TWELVE

                      DEFEASANCE AND COVENANT DEFEASANCE

       SECTION 1201.  Company's Option to Effect Defeasance or Covenant
                      -------------------------------------------------
Defeasance.
- ----------

       The Company may, at its option by Board Resolution, at any time,
with respect to the Securities, elect to have either Section 1202 or
Section 1203 be applied to all Outstanding Securities upon compliance with the
conditions set forth below in this Article Twelve.

       SECTION 1202.  Defeasance and Discharge.
                      ------------------------

       Upon the Company's exercise under Section 1201 of the option
applicable to this Section 1202, the Company shall be deemed to have been
discharged from its obligations with respect to all Outstanding Securities on
the date the conditions set forth in Section 1204 are satisfied (hereinafter,
"defeasance").  For this purpose, such defeasance means that the Company shall
be deemed to have paid and discharged the entire indebtedness represented by the
Outstanding Securities, which shall thereafter be deemed to be "Outstanding"
only for the purposes of Section 1205 and the other Sections of this Indenture
referred to in clauses (A) and (B) below, and to have satisfied all its other
obligations under such Securities and this Indenture insofar as such Securities
are concerned (and the Trustee, at the expense of the Company, shall execute
proper instruments acknowledging the same), except for the following which shall
survive until otherwise terminated or discharged hereunder:  (A) the rights of
Holders of Outstanding Securities to receive, solely from the trust fund
described in Section 1204 and as more fully set forth in such Section, payments
in respect of the principal of, premium, if any, and interest on such Securities
when such payments are due, (B) the Company's obligations with respect to such
Securities under Sections 304, 305, 306, 1002 and 1003, (C) the rights, powers,
trusts, duties and immunities of the Trustee hereunder and (D) this
Article Twelve.  Subject to compliance with this Article Twelve, the Company may
exercise its option under this Section 1202 notwithstanding the prior exercise
of its option under Section 1203 with respect to the Securities.

       SECTION 1203.  Covenant Defeasance.
                      -------------------

       Upon the Company's exercise under Section 1201 of the option
applicable to this Section 1203, the Company shall be released from its
obligations under any covenant contained in Section 801(4) and in Sections 1007
through 1021 with respect to the Outstanding Securities on and after the date
the conditions set forth below are satisfied (hereinafter, "covenant
defeasance"), and the Securities shall thereafter be deemed not to be
"Outstanding" for the purposes of any direction, waiver, consent or declaration
or Act of Holders (and the consequences of any thereof) in connection with such

                                      62

 
covenants, but shall continue to be deemed "Outstanding" for all other purposes
hereunder.  For this purpose, such covenant defeasance means that, with respect
to the Outstanding Securities, the Company may omit to comply with and shall
have no liability in respect of any term, condition or limitation set forth in
any such covenant, whether directly or indirectly, by reason of any reference
elsewhere herein to any such covenant or by reason of any reference in any such
covenant to any other provision herein or in any other document and such
omission to comply shall not constitute a Default or an Event of Default under
Section 501(3), 501(4) or 501(5), but, except as specified above, the remainder
of this Indenture and such Securities shall be unaffected thereby.

       SECTION 1204.  Conditions to Defeasance or Covenant Defeasance.
                      -----------------------------------------------

       The following shall be the conditions to application of either
Section 1202 or Section 1203 to the Outstanding Securities:

       (1)  The Company shall irrevocably have deposited or caused to be
  deposited with the Trustee (or another trustee satisfying the requirements
  of Section 608 who shall agree to comply with the provisions of this
  Article Twelve applicable to it) as trust funds in trust for the purpose
  of making the following payments, specifically pledged as security for,
  and dedicated solely to, the benefit of the Holders of such Securities:
  (A) money in an amount, or (B)  Government Securities which through the
  scheduled payment of principal and interest in respect thereof in
  accordance with their terms will provide, not later than one day before
  the due date of any payment in respect of the Securities, money in an
  amount, or (C) 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 and
  discharge, and which shall be applied by the Trustee (or other qualifying
  trustee) to pay and discharge, the principal of (and premium, if any) and
  interest on the Outstanding Securities on the Stated Maturity (or
  Redemption Date, if applicable) of such principal (and premium, if any) or
  installment of interest; provided that the Trustee shall have been
  irrevocably instructed in writing to apply such money or the proceeds of
  such Government Securities to said payments with respect to the
  Securities.  Before such a deposit, the Company may give to the Trustee,
  in accordance with Section 1103, a notice of its election to redeem all of
  the Outstanding Securities at a future date in accordance with
  Article Eleven, which notice shall be irrevocable.  Such irrevocable
  redemption notice, if given, shall be given effect in applying the
  foregoing.  

       (2)  No Default or Event of Default with respect to the Securities
  shall have occurred and be continuing on the date of such deposit or,
  insofar as paragraphs (8) and (9) of Section 501 are concerned, at any
  time during the period ending on the 91st day after the date of such
  deposit (it being understood that this condition shall not be deemed
  satisfied until the expiration of such period).

       (3)  Such defeasance or covenant defeasance shall not result in a
  breach or violation of, or constitute a default under, this Indenture or
  any other material agreement or instrument to which the Company is a party
  or by which it is bound.

       (4)  In the case of an election under Section 1202, the Company
  shall have delivered to the Trustee an Opinion of Counsel stating that
  (x) the Company has received from, or there has been published by, the
  Internal Revenue Service a ruling, or (y) since March 25, 1997 there has
  been a change in the applicable federal income tax law, in either case to
  the effect that, and based thereon such opinion shall confirm that, the

                                      63

 
  Holders of the Outstanding Securities will not recognize income, gain or
  loss for federal income tax purposes as a result of such 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
  defeasance had not occurred.

       (5)  In the case of an election under Section 1203, the Company
  shall have delivered to the Trustee an Opinion of Counsel to the effect
  that the Holders of the Outstanding Securities will not recognize income,
  gain or loss for federal income tax purposes as a result of such 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 covenant defeasance had not occurred.

       (6)  The Company shall have delivered to the Trustee an Officers'
  Certificate and an Opinion of Counsel, each stating that all conditions
  precedent provided for relating to either the defeasance under
  Section 1202 or the covenant defeasance under Section 1203 (as the case
  may be) have been complied with.

       SECTION 1205.  Deposited Money and Government Securities to Be Held
                      ----------------------------------------------------
in Trust; Other Miscellaneous Provisions.
- ----------------------------------------

       Subject to the provisions of the last paragraph of Section 1003, all
money and Government Securities (including the proceeds thereof) deposited with
the Trustee (or other qualifying trustee, collectively for purposes of this
Section 1205, the "Trustee") pursuant to Section 1204 in respect of the
Outstanding Securities shall be held in trust and applied by the Trustee, in
accordance with the provisions of such Securities and this Indenture, to the
payment, either directly or through any Paying Agent (including the Company
acting as its own Paying Agent) as the Trustee may determine, to the Holders of
such Securities of all sums due and to become due thereon in respect of
principal, premium, if any, and interest, but such money need not be segregated
from other funds except to the extent required by law.

       The Company shall pay and indemnify the Trustee and (if applicable)
its officers, directors, employees and agents against any tax, fee or other
charge imposed on or assessed against the Government Securities deposited
pursuant to Section 1204 or the principal and interest received in respect
thereof other than any such tax, fee or other charge which by law is for the
account of the Holders of the Outstanding Securities.

       Anything in this Article Twelve to the contrary notwithstanding, the
Trustee shall deliver or pay to the Company from time to time upon Company
Request any money or Government Securities held by it as provided in
Section 1204 which, in the opinion of a nationally recognized firm of
independent public accountants expressed in a written certification thereof
delivered to the Trustee, are in excess of the amount thereof which would then
be required to be deposited to effect an equivalent defeasance or covenant
defeasance, as applicable, in accordance with this Article Twelve.

       SECTION 1206.  Reinstatement.
                      -------------

       If the Trustee or any Paying Agent is unable to apply any money in
accordance with Section 1205 by reason of any order or judgment of any court or
governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Company's obligations under this Indenture and the
Securities shall be revived and reinstated as though no deposit had occurred
pursuant to Section 1202 or 1203, as the case may be, until such time as the
Trustee or Paying Agent is permitted to apply all such money in accordance with
Section 1205; provided, however, that if the Company makes any payment of

                                      64

 
principal of, premium, if any, or interest on any Security following the
reinstatement of its obligations, the Company shall be subrogated to the rights
of the Holders of such Securities to receive such payment from the money held by
the Trustee or Paying Agent.

                                      65

 
       IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.


                      QWEST COMMUNICATIONS INTERNATIONAL INC.


                                By:___/s/______________________
                                Title:


Attest:___/s/______________________
Title:


                      BANKERS TRUST COMPANY, as Trustee


                                By:___/s/______________________
                                Title:

 
                                   EXHIBIT A

                           Form of Face of Security
                           ------------------------

          [If a Global Security, then insert:]  THIS SECURITY IS A GLOBAL
SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS
REGISTERED IN THE NAME OF A DEPOSITORY OR A NOMINEE OF A DEPOSITORY OR A
SUCCESSOR DEPOSITORY.  THIS SECURITY IS NOT EXCHANGEABLE FOR SECURITIES
REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITORY OR ITS NOMINEE
EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO TRANSFER
OF THIS SECURITY (OTHER THAN A TRANSFER OF THIS SECURITY AS A WHOLE 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) MAY BE REGISTERED EXCEPT IN
THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

          [If a Global Security, then insert:]  UNLESS THIS CERTIFICATE IS
PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW
YORK CORPORATION ("DTC"), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF CEDE & CO. OR IN 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.


                             QWEST COMMUNICATIONS
                              INTERNATIONAL INC.

                     10 7/8% Series B Senior Note Due 2007

No. __________                                          $________

          Qwest Communications International Inc., a Delaware corporation
(herein called the "Company", which term includes any successor Person under the
Indenture hereinafter referred to), for value received, hereby promises to pay
to _________________, or registered assigns, the principal sum of
____________________ Dollars [if a Global Security, then insert:  (which
principal amount may from time to time be increased or decreased to such other
principal amounts which, taken together with the principal amounts of all other
Outstanding Securities, shall not exceed $__________ in the aggregate at any
time, by adjustments made on the records of the Trustee hereinafter referred to
in accordance with the Indenture)] on April 1, 2007, at the office or agency of
the Company referred to below, and to pay interest thereon, semiannually on
April 1 and October 1 in each year, commencing on October 1, 1997, accruing from
March 31, 1997 or from the most recent Interest Payment Date to which interest
has been paid or duly provided for under this Security or any Old Securities
exchanged for this Security, at the rate of 10 % per annum, until the principal
hereof is paid or duly provided for, and (to the extent lawful) to pay on demand
interest on any overdue interest at the rate borne by the Securities from the
date on which such overdue interest becomes payable to the date payment of such
interest has been made or duly provided for.

          The interest so payable, and punctually paid or duly provided for,
on any Interest Payment Date will, as provided in such Indenture, be paid to the
Person in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such
interest, which shall be the March 15 or September 15 (whether or not a Business
Day), as the case may be, next preceding such Interest Payment Date.  Any such
interest not so punctually paid or duly provided for shall forthwith cease to be

 
payable to the Holder on such Regular Record Date, and such defaulted interest,
and (to the extent lawful) interest on such defaulted interest at the rate borne
by the Securities, may be paid to the Person in whose name this Security (or one
or more Predecessor Securities) is registered at the close of business on a
Special Record Date for the payment of such Defaulted Interest to be fixed by
the Trustee, notice whereof shall be given to Holders of Securities not less
than 10 days prior to such Special Record Date, or may be paid at any time in
any other lawful manner, all as more fully provided in said Indenture.  Payment
of the principal of (and premium, if any, on) and interest on this Security will
be made at the office or agency of the Company maintained for that purpose in
The City of New York, or at such other office or agency of the Company as may be
maintained for such purpose, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts; provided, however, that payment of interest may be made at the
option of the Company by check mailed to the address of the Person entitled
thereto as such address shall appear on the Security Register.

          Reference is hereby made to the further provisions of this Security
set forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

          Unless the certificate of authentication hereon has been duly
executed by the Trustee referred to on the reverse hereof by manual signature,
this Security shall not be entitled to any benefit under the Indenture, or be
valid or obligatory for any purpose.

          IN WITNESS WHEREOF, the Company has caused this instrument to be
duly executed under its corporate seal.

Dated:                                  QWEST COMMUNICATIONS
      --------------------              INTERNATIONAL INC.
    
    
                                        By:                      
                                           ---------------------------
                                              Authorized Signatory

Attest:                       
       -------------------

                                      A-2

 
                          Form of Reverse of Security
                          ---------------------------
          This Security is one of a duly authorized issue of securities of the
Company designated as its 10 % Series B Senior Notes Due 2007 (herein called
the "Securities"), limited (except as otherwise provided in the Indenture
referred to below) in aggregate principal amount to $250,000,000, which may be
issued under an indenture (herein called the "Indenture") dated as of ________,
1997 between the Company and Bankers Trust Company, trustee (herein called the
"Trustee", which term includes any successor trustee under the Indenture), to
which Indenture and all indentures supplemental thereto reference is hereby made
for a statement of the respective rights, limitations of rights, duties,
obligations and immunities thereunder of the Company, the Trustee and the
Holders of the Securities, and of the terms upon which the Securities are, and
are to be, authenticated and delivered.

          The Securities are subject to redemption at the option of the
Company, in whole or in part, at any time or from time to time on or after April
1, 2002, upon not less than 30 nor more than 60 days' prior notice, at the
redemption prices (expressed as percentages of principal amount) set forth
below, plus accrued and unpaid interest thereon (if any) to the redemption date,
if redeemed during the twelve months beginning April 1 of the years indicated
below:

 
            Year                               Redemption Price
            ----                               ----------------
            2002 . . . . . . . . . . . . . . .    105.438%
            2003 . . . . . . . . . . . . . . .    103.625%
            2004 . . . . . . . . . . . . . . .    101.813%
            2005 and thereafter. . . . . . . .    100.000%


          In addition, prior to April 1, 2000, the Company may redeem up to
35% of the originally issued principal amount of Securities at a redemption
price equal to 110.875% of the principal amount of the Securities so redeemed,
plus accrued and unpaid interest thereon (if any) to the redemption date, with
the net proceeds of one or more Public Equity Offerings resulting in gross
proceeds of at least $100 million in the aggregate; provided that at least 65%
of the originally issued principal amount of the Securities would remain
outstanding immediately after giving effect to such redemption.

          Upon the occurrence of a Change of Control, the Holder of this
Security may require the Company, subject to certain limitations provided in the
Indenture, to repurchase this Security at a purchase price in cash in an amount
equal to 101% of the principal amount thereof plus accrued and unpaid interest.

          In the case of any redemption of Securities, interest installments
whose Stated Maturity is on or prior to the Redemption Date will be payable to
the Holders of such Securities, or one or more Predecessor Securities, of record
at the close of business on the relevant Record Date referred to on the face
hereof.  Securities (or portions thereof) for whose redemption and payment
provision is made in accordance with the Indenture shall cease to bear interest
from and after the Redemption Date.

          In the event of redemption of this Security in part only, a new
Security or Securities for the unredeemed portion hereof shall be issued in the
name of the Holder hereof upon the cancellation hereof.

          If an Event of Default shall occur and be continuing, the principal
of all the Securities may be declared due and payable in the manner and with the
effect provided in the Indenture.

          The Indenture contains provisions for defeasance at any time of
(a) the entire indebtedness of the Company on this Security and (b) certain

                                      A-3

 
restrictive covenants and the related Defaults and Events of Default, upon
compliance by the Company with certain conditions set forth therein, which
provisions apply to this Security.

          The Indenture permits, with certain exceptions as therein provided,
the amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders under the Indenture at any time by the
Company and the Trustee with the consent of the Holders of a majority in
aggregate principal amount of the Securities at the time Outstanding.  The
Indenture also contains provisions permitting the Holders of specified
percentages in aggregate principal amount of the Securities at the time
Outstanding, on behalf of the Holders of all the Securities, to waive compliance
by the Company with certain provisions of the Indenture and certain past
defaults under the Indenture and their consequences.  Any such consent or waiver
by or on behalf of the Holder of this Security shall be conclusive and binding
upon such Holder and upon all future Holders of this Security and of any
Security issued upon the registration of transfer hereof or in exchange herefor
or in lieu hereof whether or not notation of such consent or waiver is made upon
this Security.

          No reference herein to the Indenture and no provision of this
Security or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay the principal of (and
premium, if any) and interest on this Security at the times, place, and rate,
and in the coin or currency, herein prescribed.

          As provided in the Indenture and subject to certain limitations
therein set forth, the transfer of this Security is registerable on the Security
Register of the Company, upon surrender of this Security for registration of
transfer at the office or agency of the Company maintained for such purpose in
The City of New York, duly endorsed by, or accompanied by a written instrument
of transfer in form satisfactory to the Company and the Security Registrar duly
executed by, the Holder hereof or his attorney duly authorized in writing, and
thereupon one or more new Securities, of authorized denominations and for the
same aggregate principal amount, will be issued to the designated transferee or
transferees.

          The Securities are issuable only in registered form without coupons
in denominations of $1,000 and any integral multiple thereof.  As provided in
the Indenture and subject to certain limitations therein set forth, the
Securities are exchangeable for a like aggregate principal amount of Securities
of a different authorized denomination, as requested by the Holder surrendering
the same.

          No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum sufficient
to cover any tax or other governmental charge payable in connection therewith.

          Prior to the time of due presentment of this Security for
registration of transfer, the Company, the Trustee and any agent of the Company
or the Trustee may treat the Person in whose name this Security is registered as
the owner hereof for all purposes, whether or not this Security be overdue, and
neither the Company, the Trustee nor any agent shall be affected by notice to
the contrary.

          All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

                                      A-4

 
                                      A-5

 
                Form of Trustee's Certificate of Authentication
                -----------------------------------------------

          The Trustee's certificate of authentication shall be in
substantially the following form:

                    TRUSTEE'S CERTIFICATE OF AUTHENTICATION


          Dated:  ____________________

          This is one of the Securities referred to in the within-mentioned
Indenture.

                                   [NAME OF TRUSTEE] 
                                   as Trustee


                                   By:_________________________
                                     Authorized Signatory 


                                      A-6

 
                                Assignment Form
                                ---------------

          If you, the holder, want to assign this Security, fill in the form
below and have your signature guaranteed:

I or we assign and transfer this Security to ___________________________________

________________________________________________________________________________

(Insert assignee's social security or tax ID number)____________________________

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

and irrevocably appoint ________________________________
of   ________________________________
     ________________________________

agent to transfer this Security on the books of the Company.  The agent may
substitute another to act for such agent.


________________________________________________________________________________

Dated:_________________       Your signature:___________________________________
                         (Sign exactly as your name appears on the other
                         side of this Security)

                         By:____________________________________________________
                         NOTICE:  To be executed by an executive officer


Signature Guarantee:__________________________

                                      A-7

 
                      Option of Holder to Elect Purchase
                      ----------------------------------

          If you wish to have this Security purchased by the Company pursuant
to Section 1010 or 1018 of the Indenture, check the box:   

          If you wish to have a portion of this Security purchased by the
Company pursuant to Section 1010 or 1018 of the Indenture, state the amount: 
$_____________

Dated:______________________       Your Signature:_____________________________
                                   (Sign exactly as your name appears on
                                   the other side of this Security)