Exhibit 4.3



 Exhibit 4.3 
 ITC^DELTACOM, INC. SUBSCRIPTION RIGHTS LETTER OF TRANSMITTAL 
  

																									
	 THIS LETTER OF TRANSMITTAL, INCLUDING THE ACCOMPANYING INSTRUCTIONS, SHOULD BE READ CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS
COMPLETED .
  
 ITC^DeltaCom, Inc. (the “Company”) is conducting a rights
offering (the “Rights Offering”) which entitles the holders of shares of the Company’s common stock, par value $0.01 (the “Stock”), as of the close of business on December 17, 2007 (the “Record Date”), to receive
1.167 Rights (each, a “Right”) for each share of Stock held of record on the Record Date. Holders of Rights are entitled to subscribe for and purchase one share of Stock for each right (the “Subscription Right”) at a subscription
price of $3.03 per share.
  
 For a more complete description of the terms and conditions
of the Rights Offering, please refer to the Prospectus dated December 19, 2007 (the “Prospectus”), which is incorporated herein by reference. Copies of the Prospectus are available upon request from Mellon Investor Services LLC, toll free
(800) 777-3674.
  
 I hereby irrevocably subscribe for the number of shares of Stock
indicated on the form upon the terms and conditions specified in the Prospectus relating thereto. Receipt of the Prospectus is hereby acknowledged.
	  	2	  	 SUBSTITUTE FORM W-9
  

PLEASE CERTIFY YOUR TAXPAYER ID OR SOCIAL SECURITY NUMBER BY SIGNING BELOW.
	  	
	  		  		  	
	  		  	If the Taxpayer ID Number printed	  		  		  		  		  		  		  		  		  		  	
	  		  	above is INCORRECT OR            ®	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	
	  		  	if the space is BLANK write in the	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	
	  		  	CORRECT number here.	  		  		  		  		  		  		  		  		  		  	
	  		  	 Under penalties of perjury. I certify that:
  
 1. The number shown on this form is my correct taxpayer identification number (or I am waiting for a number to be issued to me), and
  
 2. I am not subject to backup withholding because: (a) I am exempt from backup withholding, or (b) I
have not been notified by the Internal Revenue Service (IRS) that I am subject to backup withholding as a result of a failure to report all interest or dividends, or (c) the IRS has notified me that I am no longer subject to backup withholding, and

  
 3. I am a U.S. person (including a U.S. resident alien).
 Certification instructions. You must cross out item 2 above if you have been notified by the IRS that you are currently subject to backup withholding because you
have failed to report all interest and dividends on your tax return.
	  	
		  		  	Signature:                                     
                       Date:               
 	  	
		  		  		  	
		  		  	 SEE INSTRUCTIONS ON THE REVERSE SIDE
  
	  	
		  	3	  	 ̈                SHARES TO SUBSCRIBE	  		  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	
		  		  		  		  	WHOLE SHARES	  	
	1 Signature: This form must be signed by the registered holder(s) exactly as their
name(s) appears on the certificate(s) or by person(s) authorized to sign on behalf of the registered holder(s) by documents transmitted herewith.	  		  	ENCLOSED IS MY CERTIFIED OR CASHIER’S CHECK OR MONEY ORDER	  	
	 X_
	  		  	FOR $________________________________________	  	
	Signature of
Stockholder        Date                    Daytime Telephone#	  		  		  	
				
	 X
	  		  		  	
	Signature of
Stockholder        Date                    Daytime Telephone#	  		  		  	

 4 
  

									
					
	  	 	 	 		 		  	 
	SUBSCRIPTION RIGHTS CERTIFICATE NUMBER	 		 		 		  	
					
	  	 	 	 	  	 	 	  	  
	SHARES TO SUBSCRIBE	 		 	RIGHTS	 		  	RECORD DATE SHARES

 ITC^DELTACOM, INC. 
 SUBSCRIPTION RIGHTS CERTIFICATE 
  

	A.	Number of shares of Stock subscribed for through the subscription privilege (not to exceed one share of stock for each Right held):
                             shares of Stock 

  

	B.	Total Subscription Price (line A multiplied by $3.03):
$                         

  

	C.	Please enclose a certified or cashier’s check or money order payable to Mellon Bank, N.A. 

  

 HOW TO CONTACT MELLON INVESTOR
SERVICES 
 By Telephone – 9 a.m. to 6 p.m. New York Time, Monday through Friday, except for bank holidays: 
 From within the U.S., Canada or Puerto Rico 
                     1-800-777-3674 (Toll Free) 
 From outside the U.S. 
                 1-201-680-6654 (Collect) 
 SUBSCRIPTION TO PURCHASE COMMON STOCK OF ITC^DELTACOM, INC. 
 RETURN TO: MELLON BANK, N.A . C/O MELLON INVESTOR SERVICES
LLC 
 WHERE TO FORWARD YOUR TRANSMITTAL MATERIALS 
  


			
	By Mail:	 	By Overnight Courier or By Hand:
		
	Mellon Investor Services LLC	 	Mellon Investor Services LLC
	Attn: Corporate Action Dept., 27th Floor	 	Attn: Corporate Action Dept., 27th Floor
	P.O. Box 3301	 	480 Washington Boulevard
	South Hackensack, NJ 07606	 	Jersey City, NJ 07310

 THIS RIGHTS OFFERING EXPIRES AT 5:00 P.M., EASTERN TIME, ON JANUARY 23, 2008, UNLESS EXTENDED, AND THIS
SUBSCRIPTION CERTIFICATE IS VOID THEREAFTER. 







 5 
 SPECIAL TRANSFER
INSTRUCTIONS To be completed if the certificate representing the Stock is to be issued in a name other than that of the registered holder. 
  

	
	
	 
	Name (Please Print First, Middle & Last Name)
	
	 
	Address                (Number and Street)
	
	 
	(City, State & Zip Code)
	
	 
	(Tax Identification or Social Security Number)

 SIGNATURE GUARANTEE MEDALLION Your signature must be guaranteed by an Eligible Guarantor Institution, as
defined in rule 17Ad-15 of the Securities Exchange Act of 1934, as amended. These generally include (a) a commercial bank or trust company, (b) a member firm of a domestic stock exchange, or (c) a credit union. 
  

					
			
	 	  		  	
	(Title of Officer Signing this Guarantee)	  		  	
			
	 	  		  	
	(Name of Guarantor - Please Print)	  		  	
			
	 	  		  	
	(Address of Guarantor Firm)	  		  	
			
	 	  		  	
	YOU MUST HAVE YOUR SIGNATURE(S) GUARANTEED IF YOU WISH TO HAVE YOUR SHARES ISSUED IN A NAME OTHER THAN THAT OF THE REGISTERED HOLDER OR DELIVERED TO AN ADDRESS OTHER THAN THE ONE
LISTED ON THE FACE OF THIS RIGHTS CERTIFICATE OR TO A STOCKHOLDER OTHER THAN THE REGISTERED HOLDER.

 6 
 DELIVERY
INSTRUCTIONS: Address for mailing of stock or new Rights Certificate in accordance with the Prospectus, if different from the address shown on the face of this Rights Certificate: 
  

	
	
	 
	Name (Please Print First, Middle & Last Name)
	
	 
	Address                (Number and Street)
	
	 
	
	
	
	 
	(City, State & Zip Code)

 COMPLETE ALL APPLICABLE SECTIONS OF THIS FORM USING THE INSTRUCTIONS BELOW. 
  

	1	Sign and date Box 1 and include your daytime phone number. 

  

	2	PLEASE SIGN IN BOX 2 TO CERTIFY YOUR TAXPAYER ID OR SOCIAL SECURITY NUMBER if you are a U.S. Taxpayer. If the Taxpayer ID or Social
Security Number is incorrect or blank, write the corrected number in Box 2 and sign to certify. Please note that Mellon Investor Services may withhold 28% of your proceeds as required by the IRS if the Taxpayer ID or Social Security Number is not
certified on our records. If you are a non-U.S. Taxpayer, please complete and return form W-8BEN. 

  

	3	Fill in the number of whole shares you wish to subscribe for. Insert the total amount due for your subscription. Fees must be paid by certified or cashier’s check or money
order. Personal checks will not be accepted. 

  

	4	Rights card and calculation section for determining your subscription privileges. 

  

	5	If you want your ITC^DeltaCom stock to be issued in another name or sent to a different address, complete the Special Transfer Instructions in Box 5. The signature(s) in Box 5 must
be medallion guaranteed by an Eligible Guarantor Institution. 

 THIS RIGHTS OFFERING HAS BEEN QUALIFIED OR IS BELIEVED TO BE EXEMPT FROM
QUALIFICATION ONLY UNDER THE FEDERAL LAWS OF THE UNITED STATES AND THE LAWS OF THE STATES IN THE UNITED STATES. RESIDENTS OR OTHER JURISDICTIONS MAY NOT PURCHASE THE SECURITIES OFFERED HEREBY UNLESS THEY CERTIFY THAT THEIR PURCHASES OF SUCH
SECURITIES ARE EFFECTED IN ACCORDANCE WITH THE APPLICABLE LAWS OF SUCH JURISDICTIONS. 
 THIS RIGHTS OFFERING EXPIRES AT 5:00 P.M., EASTERN TIME, ON
JANUARY 23, 2008, UNLESS EXTENDED, AND THIS SUBSCRIPTION CERTIFICATE IS VOID THEREAFTER.