Exhibit 10.13



 Exhibit 10.13 
 [Series B Warrant Agreement – Execution Copy] 
 AMENDMENT NO. 3 TO WARRANT AGREEMENT

 THIS AMENDMENT NO. 3 TO WARRANT AGREEMENT, dated as of July 31, 2007 (this “Amendment”), is between
ITC^DeltaCom, Inc., a Delaware corporation (the “Company”), and Mellon Investor Services LLC, a New Jersey limited liability company, as warrant agent (the “Warrant Agent”). 
 W I T N E S S E T H: 
 WHEREAS, the Company
and the Warrant Agent are parties to a Warrant Agreement, dated as of October 6, 2003, as amended as of March 29, 2005 and July 26, 2005 (the “Agreement”), pursuant to which the Company has issued and delivered
3,000,000 warrants; 
 WHEREAS, the Holders (as such term is defined in the Agreement) of a majority of such warrants outstanding as of the
date hereof have consented in writing to this Amendment in accordance with Section 12(a) of the Agreement; and 
 WHEREAS, the Company
wishes to amend the Agreement pursuant to such consent, as hereinafter provided; 
 NOW, THEREFORE, in consideration of the promises and the
mutual agreements herein set forth, the parties hereby agree as follows: 
 SECTION 1. CAPITALIZED TERMS. 
 Capitalized terms used in this Amendment and not defined herein have the meanings given to such terms in the Agreement. 
 SECTION 2. AMENDMENT TO SECTION 14 OF AGREEMENT. 
 Section 14 of the Agreement is hereby amended by deleting existing Section 14 in its entirety and by substituting therefor a new Section 14, which shall read in its entirety as follows: 
 This Agreement and the right of any Holder to exercise Warrants pursuant hereto or the terms of such Warrants shall terminate at 5:00
p.m., New York City time, on the earliest to occur of (a) the Expiration Date, (b) the date on which all Warrants have been exercised or (c) the date on which the Company shall have submitted to the Warrant Agent for cancellation
pursuant to Section 10.4 the Warrants tendered to the Company in the Recapitalization Exchange. The provisions of Sections 2.3, 9 and 10 shall survive such termination. 







 SECTION 3. AMENDMENT TO SECTION 15 OF AGREEMENT. 
 Section 15 of the Agreement is hereby amended by adding, in the appropriate alphabetical order, the following definition to such Section 15:

 “Recapitalization Exchange” means a transaction or series of related transactions in which Holders of at least 90%
of the outstanding Warrants tender such Warrants to the Company in exchange for Common Stock on terms specified in an agreement between such Holders and the Company. 
 SECTION 4. EFFECTIVENESS. 
 This Amendment shall be effective as of the date hereof. From and after
the effectiveness of this Amendment, each reference in the Agreement to “this Agreement” shall mean the Agreement as amended by this Amendment. Except as amended by this Amendment, the terms and provisions of the Agreement shall remain
unchanged. 
 SECTION 5. GOVERNING LAW. 
 This Amendment shall be deemed to be a contract made under the laws of the State of New York and for all purposes shall be construed in accordance with the internal laws of the State of New York, without giving effect to principles of
conflict of laws to the extent the application of the laws of another jurisdiction would be required thereby. 
 [signature page follows]

  

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 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed, as of the day and
year first above written. 
  

			
	ITC^DELTACOM, INC.
		
	 By:
	 	 /s/ J. Thomas Mullis

	 Name:
	 	J. Thomas Mullis
	 Title:
	 	Senior Vice President-Legal and Regulatory
	
	 MELLON INVESTOR SERVICES LLC 
 as
Warrant Agent

		
	 By:
	 	 /s/ Judy Hsu

	 Name:
	 	Judy Hsu
	 Title:
	 	Vice President