POWER OF ATTORNEY


      KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and
appoints Roger D. Shannon and Gayle S. Ellis and each of them, his true and
lawful attorneys-in- fact and agents, with full power of substitution, for him
and in his name, place and stead, in any and all capacities, to:

1. execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer and/or director of ADTRAN, Inc. (the "Company"), Forms 3, 4 and 5
in accordance with Section 16(a) of the Securities Exchange Act of 1934, as
amended, and the rules thereunder;

2. do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form 3, 4 or 5
and timely file such form with the United States Securities and Exchange
Commission and any stock exchange or similar authority; and

3. take any other action of any type whatsoever in connection with the foregoing
which, in the opinion of such attorney-in-fact, may be of benefit to, in the
best interest of, or legally required by, the undersigned, it being understood
that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in- fact's discretion.

      The undersigned hereby grants to each such attorney-in-fact full power and
authority to  do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in- fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Securities Exchange Act of 1934.

      This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.


       IN  WITNESS  WHEREOF,   the  undersigned   has  caused  this  Power  of
Attorney   to  be executed as of this 8	day of	February, 2016.



Signature
Anthony J. Melone
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