UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549




                                    FORM 8-K



                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934




       Date of Report (Date of earliest event reported): October 15, 2007




                                  ADTRAN, Inc.
             (Exact name of registrant as specified in its charter)

        Delaware                     0-24612                   63-0918200
(State of Incorporation)     (Commission file number)       (I.R.S. Employer
                                                         (Identification Number)



             901 Explorer Boulevard, Huntsville, Alabama 35806-2807
          (Address of principal executive offices, including zip code)



                                 (256) 963-8000
              (Registrant's telephone number, including area code)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

     |_|  Written communications pursuant to Rule 425 under the Securities Act
          (17 CFR 230.425)

     |_|  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17
          CFR 240.14a-12)

     |_|  Pre-commencement communications pursuant to Rule 14d-2(b) under the
          Exchange Act (17 CFR 240.14d-2(b))

     |_|  Pre-commencement communications pursuant to Rule 13e-4(c) under the
          Exchange Act (17 CFR 240.13e-4(c))




Item 2.02.  Results of Operations and Financial Condition.

On October 15, 2007, ADTRAN, Inc. announced its financial results for the fiscal
quarter ended September 30, 2007 and certain other information.

ADTRAN also announced that its Board of Directors declared a quarterly cash
dividend. The quarterly cash dividend is $0.09 per common share to be paid to
holders of record at the close of business on November 1, 2007. The ex-dividend
date is October 30, 2007 and the payment date is November 15, 2007.

A copy of ADTRAN's press release announcing such financial results and other
information is attached as Exhibit 99.1 hereto and incorporated by reference
herein.

In addition, ADTRAN has posted supplemental information regarding revenues by
product category, subcategory and segment, and stock-based compensation expense,
for the fiscal quarter ended September 30, 2007 on the Investor Relations page
of its website, www.adtran.com. A copy of the supplemental information is
attached as Exhibits 99.2 and 99.3 hereto and incorporated by reference herein.


Item 9.01.  Financial Statements and Exhibits.

              (c)  Exhibits.

              The following exhibits are furnished as part of this Current
              Report on Form 8-K.

Exhibit Number            Description
--------------            -----------
     99.1                 Press Release dated October 15, 2007.
     99.2                 Revenues by product and segment classification
     99.3                 Stock-based compensation expense




                                   SIGNATURES

              Pursuant to the requirements of Section 13 or 15(d) of the
Securities Exchange Act of 1934, the Registrant has duly caused this report to
be signed on its behalf by the undersigned, thereunto duly authorized on October
15, 2007.

                                             ADTRAN, Inc.
                                             (Registrant)

                                             By:/s/ James E. Matthews
                                                --------------------------------
                                             James E. Matthews
                                             Senior Vice President - Finance,
                                             Chief Financial Officer, Treasurer,
                                             Secretary and Director




                                  EXHIBIT INDEX

Exhibit Number            Description
--------------            -----------
     99.1                 Press Release dated October 15, 2007.
     99.2                 Revenues by product and segment classification
     99.3                 Stock-based compensation expense