Exhibit 4.1

    

    

    SIXTH SUPPLEMENTAL INDENTURE

    

    

    Supplemental Indenture (this “Sixth Supplemental
        Indenture”), dated as of July 2, 2020, among Cincinnati Bell Inc., an Ohio corporation (or its permitted successor) (the “Issuer”),
      each subsidiary of the Issuer identified as a Guarantor on Schedule I hereto (each, a “Guarantor” and together, the “Guarantors”), and Regions Bank (or its permitted successor), as trustee under the Indenture referred to below (the “Trustee”). Capitalized terms used herein without definition shall have the meanings ascribed to them in the Indenture.

    

    

    W I T N E S S E T H

    

    

    WHEREAS, the Issuer and the other Guarantors party thereto have heretofore executed and delivered to the Trustee an indenture, dated as of September
      22, 2016 (as supplemented by the First Supplemental Indenture, dated as of April 3, 2017, the Second Supplemental Indenture, dated as of May 31, 2017, the Third Supplemental Indenture, dated as of October 2, 2017, the Fourth Supplemental Indenture,
      dated as of December 22, 2017, and the Fifth Supplemental Indenture, dated as of July 2, 2018, the “Indenture”), providing for the issuance
      by the Issuer of its 7.000% Senior Notes due 2024 (the “Notes”);

    

    

    WHEREAS, the Issuer proposes to amend the Indenture as contemplated by this Sixth Supplemental Indenture (such amendments, collectively, the “Amendments”);

    

    

    WHEREAS, pursuant to Section 9.02(e) of the Indenture, the Issuer, the Guarantors and the Trustee may amend or supplement the Indenture as
      contemplated by this Sixth Supplemental Indenture with the consent of the Holders of at least a majority in principal amount of the outstanding Notes (the “Requisite Consents”);

    

    

    WHEREAS, the Issuer has obtained the Requisite Consents to the Amendments pursuant to the consent solicitation statement, dated June 15, 2020 (as
      amended, supplemented or otherwise modified from time to time, the “Consent Solicitation Statement”), and upon the terms and subject to the
      conditions set forth therein; and

    

    

    WHEREAS, pursuant to Section 9.02(c) of the Indenture, the Trustee is authorized to execute and deliver this Sixth Supplemental Indenture.

    

    

    NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt and adequacy of which is hereby
      acknowledged, the Issuer, each Guarantor  and the Trustee mutually covenant and agree as follows for the benefit of each other and for the equal and ratable benefit of the Holders as follows:

    

    

    ARTICLE 1

    DEFINITIONS

    

    

    Section 1.1. Defined Terms. As used in this Sixth Supplemental Indenture, terms defined in the Indenture or in the preamble or recitals hereto are used herein as therein defined. The words
      “herein,” “hereof” and “hereby” and other words of similar import used in this Sixth Supplemental Indenture refer to this Sixth Supplemental Indenture as a whole and not to any particular section hereof.

    

    

    ARTICLE 2

    AMENDMENTS

    

    

    

    

    
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    Section 2.1. Amendments.

    

    

    
      
        	

              	(i)	
                The definition of “Change of Control” in Article 1.01 of the Indenture is amended and restated in its entirety to read as follows:

              


      

    

    

    

    “Change of Control” means the occurrence of any of the
      following:

    

    

    (1)  the sale, lease or transfer, in one or a series of related transactions, of all or substantially all of the property and assets of the Issuer and
      its Subsidiaries, taken as a whole, to any Person other than the Issuer, any of its Subsidiaries or one or more Permitted Holders;

    

    

    (2)  the Issuer becomes aware of (by way of a report or any other filing pursuant to Section 13(d) of the Exchange Act, proxy, vote, written notice or
      otherwise) the acquisition by any Person or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange Act, or any successor provision), including any group acting for the purpose of acquiring, holding or disposing of securities
      (within the meaning of Rule 13d-5(b)(1) under the Exchange Act), other than one or more Permitted Holders, in a single transaction or in a related series of transactions, by way of acquisition, merger, amalgamation, consolidation, transfer,
      conveyance or other business combination or purchase of beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act, or any successor provision), directly or indirectly, of more than 50% of the total voting power of the Voting Stock
      of the Issuer, other than by virtue of (a) the imposition of one or more holding companies (including in connection with a business combination and regardless of whether any such holding company has other assets) or (b) the reincorporation of the
      Issuer in another jurisdiction, if in the case of either (a) or (b), (i) the beneficial owners of 100% of the total voting power of the Voting Stock of the Issuer immediately prior to such transaction directly or indirectly hold a majority of the
      voting power of the Voting Stock of such holding company or reincorporation entity immediately thereafter and (ii) no Person or group beneficially owns more than 50% of the voting power of the Voting Stock of the Issuer immediately following such
      transaction if such Person or group did not beneficially own more than 50% of the voting power of the Voting Stock of the Issuer prior to such transaction; or

    

    

    (3)  (x) the Issuer merges or consolidates with or into any Person (except in the case of a merger or consolidation of the Issuer following which the
      Issuer or the surviving Person in such transaction is a Subsidiary of another Person, which shall be subject to clause (2) above) or (y) any Subsidiary of the Issuer merges or consolidates with or into any Person and, in the case of this subclause
      (y), in connection therewith Voting Stock of the Issuer is issued to shareholders of such other Person, unless, in the case of each of subclauses (x) and (y), immediately following such transaction, (i) the beneficial owners of 100% of the voting
      power of the Voting Stock of the Issuer immediately prior to such transaction, directly or indirectly hold a majority of the voting power of the Voting Stock of the Issuer or such Person in such transaction immediately after such transaction and (ii)
      no Person or group beneficially owns more than 50% of the voting power of the Voting Stock of the Issuer or such Person immediately following such transaction if such Person or group did not beneficially own more than 50% of the voting power of the
      Voting Stock of the Issuer prior to such transaction, in each case, other than one or more Permitted Holders.

    

    

    Notwithstanding the above, the acquisition by MIP V (FCC) AIV, L.P. and any other affiliate or managed funds and Ares Special Situations Fund IV,
      L.P., ASOF Holdings I, L.P. and any other affiliates or managed funds of the Issuer will not be deemed a “Change of Control.”

    

    

    
      
        
          	

                	(ii)	
                  The following, new defined term shall be added to Article 1.01 of the Indenture in alphabetical order:

                


        

      

      

      

    

    “Permitted Holder” means (a) senior executive officers or
      directors of the Issuer who are or become holders of Equity Interests of the Issuer, (b) any Subsidiary of the Issuer, (c) (i) Macquarie Infrastructure and Real Assets, Inc. (“MIRA”), MIP V (FCC) AIV, L.P. (and together with MIRA, “Macquarie”), and

    

    

    

    

    
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    any of their respective Affiliates, (ii) any investment fund or vehicle managed, sponsored or advised by Macquarie or any Affiliate thereof, and any
      Affiliate of or successor to any such investment fund or vehicle and (iii) any limited or general partners of, or other investors in, any Macquarie investor or any Affiliate thereof, or any such investment fund or vehicle (but, in case of this clause
      (c), excluding any portfolio companies of any of the foregoing), (d) (i) Ares Special Situations Fund IV, L.P. and ASOF Holdings I, L.P. (collectively, “Ares”) and any of their respective Affiliates, (ii) any investment fund or vehicle managed,
      sponsored or advised by Ares or any Affiliate thereof, and any Affiliate of or successor to any such investment fund or vehicle and (iii) any limited or general partners of, or other investors in, any Ares investor or any Affiliate thereof, or any
      such investment fund or vehicle (but, in case of this clause (d), excluding any portfolio companies of any of the foregoing), and (e) any Person or combination of Persons that, directly or indirectly, holds or acquires beneficial ownership of 100% on
      a fully diluted basis of the Voting Stock of the Issuer, and of which no other Person or “group” (within the meaning of Rules 13d-3 and 13d-5 under the Exchange Act as in effect on the Issue Date), other than any of the other Permitted Holders
      specified in any of clauses (a) through (d) above, beneficially owns more than 50% on a fully diluted basis of the Voting Stock thereof. Any Person or group (within the meaning of Section 13(d)(3) or Section 14(d)(2) of the Exchange Act or any
      successor provision) whose acquisition of beneficial ownership constitutes a Change of Control in respect of which a Change of Control Offer is made in accordance with the requirements of this Indenture will thereafter, together with its Affiliates,
      constitute an additional Permitted Holder.

    
      

      

      
        
          
            	

                  	(iii)	
                    The Indenture shall be amended by adding the following, new Section 4.20:

                  


          

        

        

        

      

    

    “SECTION 4.20 Limitation on Optional Redemption.  The Issuer shall not redeem all or a part of the Notes, prior to September 15, 2021
      pursuant to Section 3.07 of this Indenture.”

    

    

    ARTICLE 3

    MISCELLANEOUS

    

    

    Section 3.1. Effectiveness; Operative Time; Reversal; Authorization.

    

    

    (i)          This Sixth Supplemental Indenture shall become
        effective and binding on the Issuer, the Guarantors, the Trustee and every Holder of the Notes heretofore or hereafter authenticated and delivered under the Indenture, upon the date on which it is executed by the Issuer, the Guarantors and the
        Trustee (the “Effective Date”); provided, however,
        that the Amendments set forth in Article 2 hereof shall become operative immediately prior to the consummation of the Acquisition (as defined in the Consent Solicitation Statement) (the “Amendment Operative Time”) if the Issuer delivers an Officer’s Certificate to the Trustee confirming that substantially concurrently with delivery of such Officer’s Certificate that (i) the Consent
        Fee (as defined in the Consent Solicitation Statement) has been paid to consenting Holders in accordance with the Consent Solicitation Statement and (ii) the Issuer and the Guarantors have executed any necessary agreement or instrument in
        connection with the granting of the Collateral (the “Operative Conditions”). If the Operative Conditions fail to occur, the Indenture will
        revert to the form in effect immediately prior to the Effective Date, the Issuer shall provide the Trustee with written notice of such failure and such reversion.

    

    

    (ii)        From and after the Amendment Operative Time, the
        Indenture shall be amended and supplemented in accordance herewith. Each reference in the Indenture to “this Indenture,” “hereunder,” “hereof,” or “herein” shall mean and be a reference to the Indenture as amended and supplemented by this Sixth
        Supplemental Indenture unless the context otherwise requires. The Indenture as amended and supplemented by this Sixth Supplemental Indenture shall be read, taken and construed as one and the same instrument, and every Holder of the Notes heretofore
        or hereafter authenticated and delivered under the Indenture as supplemented by this Sixth Supplemental Indenture shall be bound thereby.

    

    

    

    

    
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    (iii)        Upon the Effective Date of this Sixth Supplemental
        Indenture, each holder of the Notes (or any beneficial ownership interest therein) will be deemed to have authorized the Trustee and Regions Bank or any other institution selected to serve in such role, to act as the collateral agent (the “Collateral Agent”), to enter into the Collateral Supplemental Indentures, the Collateral Documents, the First Lien Intercreditor Agreement, any
        other agreement or instrument in connection with the granting of the Collateral (each as defined in the Consent Solicitation Statement) and any amendment or
        modification thereto in the reasonable judgment of the Issuer that is necessary to provide a security interest in the Collateral or to cure any ambiguity, omission,
          defect or inconsistency (including, without limitation, any inconsistency between the text of such documents with the description of the Collateral Supplemental Indenture, the Collateral Documents and the First Lien Intercreditor Agreement
          contained in this Consent Solicitation Statement to the extent any such text was intended (as evidenced by an officer’s certificate) to be a verbatim recitation of a provision of the Collateral Supplemental Indenture, the Collateral Documents or
          First Lien Intercreditor Agreement), on behalf of such holder of the Notes and each holder of the Notes will be bound by the terms of the Collateral Supplemental Indentures, the Collateral Documents, the First Lien Intercreditor Agreement
        and any other agreement or instrument in connection with the granting of the Collateral.  Each holder of the Notes (or any beneficial ownership interest therein) will be deemed to have authorized the Trustee and the Collateral Agent to execute any
        and all documents, financing statements, agreements and instruments and take all such further actions (including the filing and recording of financing statements, fixture filings and other documents) that the Goldman Sachs Bank USA or another
        entity in such role, in its capacity as collateral agent under the Senior Secured Credit Facilities  (as defined in the Consent Solicitation Statement) (in such
        capacity, the “Controlling Collateral Agent”) may reasonably request (including, without limitation, those required by applicable law), all
        at the expense of the Issuer and the Guarantors, to secure the Notes and the Note Guarantees on an equal and ratable basis with the Senior Secured Credit Facilities on
          the Collateral.

    

    

    Section 3.2. Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms,
      conditions and provisions thereof shall remain in full force and effect. This Sixth Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of Notes heretofore or hereafter authenticated and delivered shall be
      bound hereby.

    

    

    Section 3.3. Severability. In case any provision in this Sixth Supplemental Indenture 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 and such provision shall be ineffective only to the extent of such invalidity, illegality or unenforceability.

    

    

    Section 3.4. No Recourse Against Others. Pursuant to Section 12.06 of the Indenture, no director, officer, employee, incorporator, stockholder, member, manager or partner of the Issuer or each
      Guarantor shall have any liability for any obligations under the Notes, the Indenture, this Sixth Supplemental Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation.

    

    

    Section 3.5. Governing Law. THE LAWS OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS SIXTH SUPPLEMENTAL INDENTURE.

    

    

    Section 3.6. Counterparts. The parties may sign any number of copies of this Sixth Supplemental Indenture (including by electronic transmission). Each signed copy shall be an original, but all of
      them together represent the same agreement. The exchange of copies of this Sixth Supplemental Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Sixth Supplemental Indenture as
      to the parties hereto and may be used in lieu of the original Sixth Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures for all purposes.

    

    

    Section 3.7. Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction hereof.

    

    

    

    

    
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    Section 3.8. Trustee. The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Sixth Supplemental Indenture or for or in respect of
      the recitals contained herein, all of which recitals are made solely by the Issuer and each Guarantor.

    

    

    

    

    

    

    

    

    

    

    [Signatures on following pages]

     

    

     

    

  

  
    
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    IN WITNESS WHEREOF, the parties hereto have caused this Sixth Supplemental Indenture to be duly executed and attested, all as of the date first above
      written.

    

    

    
      	 	CINCINNATI BELL INC.	 
	 	 	 	 
	

            	
              By: 

            	/s/ Joshua T. Duckworth

            	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
              Vice President of Treasury, Corporate Finance and

              

              Investor Relations

              

            	 


    

    

    

    

    

    
      
        	 	CBTS LLC, as Guarantor	 
	 	 	 	 
	

              	
                By: 

              	/s/ Joshua T. Duckworth

              	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                Vice President of Treasury, Corporate Finance and

                

                Investor Relations

                

              	 


      

      

      

      
        

        

        
          	 	CBTS TECHNOLOGY SOLUTIONS LLC (Successor to ONX HOLDINGS LLC, ONX USA LLC and ONX MANAGED SERVICES INC.), as Guarantor	 
	 	 	 	 
	

                	
                  By: 

                	/s/ Joshua T. Duckworth

                	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                  Vice President of Treasury, Corporate Finance and

                  

                  Investor Relations

                  

                	 


        

        

        

        
          

          

          
            	 	CBTS VIRGINIA LLC, as Guarantor	 
	 	 	 	 
	

                  	
                    By: 

                  	/s/ Joshua T. Duckworth

                  	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                    Vice President of Treasury, Corporate Finance and

                    

                    Investor Relations

                    

                  	 


          

          

          

          
            

            

            
              	 	CINCINNATI BELL ENTERTAINMENT INC., as Guarantor	 
	 	 	 	 
	

                    	
                      By: 

                    	/s/ Joshua T. Duckworth

                    	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                      Vice President of Treasury, Corporate Finance and

                      

                      Investor Relations

                      

                    	 


            

            

            

            

            

            
              
                


            

          

        

      

    

    

    

    
      
        	 	CINCINNATI BELL EXTENDED TERRITORIES LLC, as Guarantor	 
	 	 	 	 
	

              	
                By: 

              	/s/ Joshua T. Duckworth

              	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                Vice President of Treasury, Corporate Finance and

                

                Investor Relations

                

              	 


      

      

      

      

      

      
        
          	 	
                  CINCINNATI BELL SHARED SERVICES LLC, as Guarantor

                	 
	 	 	 	 
	

                	
                  By: 

                	/s/ Joshua T. Duckworth

                	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                  Vice President of Treasury, Corporate Finance and

                  

                  Investor Relations

                  

                	 


        

        

        

        
          

          

          
            	 	CINCINNATI BELL TELEPHONE COMPANY LLC, as Guarantor	 
	 	 	 	 
	

                  	
                    By: 

                  	/s/ Joshua T. Duckworth

                  	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                    Vice President of Treasury, Corporate Finance and

                    

                    Investor Relations

                    

                  	 


          

          

          

          
            

            

            
              	 	CINCINNATI BELL WIRELESS, LLC, as Guarantor	 
	 	 	 	 
	

                    	
                      By: 

                    	/s/ Joshua T. Duckworth

                    	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                      Vice President of Treasury, Corporate Finance and

                      

                      Investor Relations

                      

                    	 


            

            

            

            

            

          

          
            
              	 	HAWAIIAN TELCOM COMMUNICATIONS, INC., as Guarantor	 
	 	 	 	 
	

                    	
                      By: 

                    	/s/ Joshua T. Duckworth

                    	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                      Vice President of Treasury, Corporate Finance and

                      

                      Investor Relations

                      

                    	 


            

            

            

            
              

              

              
                	 	HAWAIIAN TELCOM HOLDCO, INC., as Guarantor	 
	 	 	 	 
	

                      	
                         By: 

                      	/s/ Joshua T. Duckworth

                      	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                        Vice President of Treasury, Corporate Finance and

                        

                        Investor Relations

                        

                      	 


              

              

              

            

          

        

      

    

    

    

    
      
        


    

    

    

    
      
        
          	 	HAWAIIAN TELCOM, INC., as Guarantor	 
	 	 	 	 
	

                	
                  By: 

                	/s/ Joshua T. Duckworth

                	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                  Vice President of Treasury, Corporate Finance and

                  

                  Investor Relations

                  

                	 


        

        

        

        

        

        
          
            	 	
                    HAWAIIAN TELCOM SERVICES COMPANY, INC., as Guarantor

                  	 
	 	 	 	 
	

                  	
                    By: 

                  	/s/ Joshua T. Duckworth

                  	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                    Vice President of Treasury, Corporate Finance and

                    

                    Investor Relations

                    

                  	 


          

          

          

          
            

            

            
              	 	SYSTEMMETRICS CORPORATION, as Guarantor	 
	 	 	 	 
	

                    	
                      By: 

                    	/s/ Joshua T. Duckworth

                    	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                      Vice President of Treasury, Corporate Finance and

                      

                      Investor Relations

                      

                    	 


            

            

            

            
              

              

              
                	 	WAVECOM SOLUTIONS CORPORATION, as Guarantor	 
	 	 	 	 
	

                      	
                        By: 

                      	/s/ Joshua T. Duckworth

                      	 
	 	 	Name:	Joshua T. Duckworth	 
	 	 	Title:	
                        Vice President of Treasury, Corporate Finance and

                        

                        Investor Relations

                        

                      	 


              

              

              

              
                
                  


              

              

              

              
                
                  	 	REGIONS BANK, as Trustee	 
	 	 	 	 
	

                        	
                          By: 

                        	/s/ Doug Milner

                        	 
	 	 	Name:	Doug Milner

                        	 
	 	 	Title:	
                          Senior Vice President

                          

                        	 


                

                

                

              

            

          

        

      

    

    

    
      
        


    

    

    

    Schedule I

    

    

    
      
        	1.	
                CBTS LLC

              


      

    

    

    

    
      
        	2.	
                CBTS Technology Solutions LLC

              


      

    

    

    

    
      
        	3.	
                CBTS Virginia LLC

              


      

    

    

    

    
      
        	4.	
                Cincinnati Bell Entertainment Inc.

              


      

    

    

    

    
      
        	5.	
                Cincinnati Bell Extended Territories LLC

              


      

    

    

    

    
      
        	6.	
                Cincinnati Bell Shared Services LLC

              


      

    

    

    

    
      
        	7.	
                Cincinnati Bell Telephone Company LLC

              


      

    

    

    

    
      
        	8.	
                Cincinnati Bell Wireless, LLC

              


      

    

    

    

    
      
        	9.	
                Hawaiian Telcom Communications, Inc.

              


      

    

    

    

    
      
        	10.	
                Hawaiian Telcom Holdco, Inc.

              


      

    

    

    

    
      
        	11.	
                Hawaiian Telcom, Inc.

              


      

    

    

    

    
      
        	12.	
                Hawaiian Telcom Services Company, Inc.

              


      

    

    

    

    
      
        	13.	
                SystemMetrics Corporation

              


      

    

    

    

    
      
        	14.	
                Wavecom Solutions Corporation