ADTRAN, Inc. (NASDAQ: ADTN) announced today that the Company will release its financial results for the second quarter 2010 on Wednesday, July 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.