ADTRAN, Inc. to Release First Quarter Earnings on April 14, 2010

HUNTSVILLE, Ala.--(Business Wire)--
ADTRAN, Inc. (NASDAQ: ADTN) announced today that the Company will release its
financial results for the first quarter 2010 on Wednesday, April 14, 2010. The
Company will conduct a conference call at 9:30 a.m. Central Time. In addition,
ADTRAN will webcast this conference call live through the StreetEvents.com
service. To listen, simply visit the Investor Relations site at
http://www.adtran.com approximately 10 minutes prior to the start of the call
and click on the conference call link provided.

An online replay of the conference call, as well as the text of the Company's
earnings release, will be available on the Investor Relations site at
http://www.adtran.com for at least 12 months following the call.

ADTRAN, Inc. is a leading global provider of networking and communications
equipment, with a portfolio of more than 1,700 solutions for use in the last
mile of today's telecommunications networks. Widely deployed by carriers and
enterprises alike, ADTRAN solutions enable voice, data, video, and Internet
communications across copper, fiber, and wireless network infrastructures.
ADTRAN solutions are currently in use by every major U.S. service provider and
many global ones, as well as by thousands of public, private and governmental
organizations worldwide.

For more information, contact the company at 800 9ADTRAN (800 923-8726) or via
email at info@adtran.com On the Web, visit www.adtran.com.

ADTRAN, Inc.
Jim Matthews, 256-963-8775
or
Investor Services/Assistance:
Gayle Ellis, 256-963-8220

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