07/05/2012 — HUNTSVILLE, Ala. — (BUSINESS WIRE)

ADTRAN, Inc. (NASDAQ:ADTN)
announced the completion of its acquisition of the Nokia Siemens
Networks Fixed Line Broadband Access Business.

The Company also announced that a 30 minute conference call will be held
Tuesday, May 8, 2012 at 9:30 a.m. central time to discuss the
transaction. This conference call will be web cast live through
StreetEvents.com. To listen, simply visit the Investor Relations site at http://www.adtran.com
or http://www.streetevents.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 will be available for seven days
at http://www.streetevents.com.
In addition, an online replay of the conference call 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.
ADTRAN’s products enable voice, data, video, and Internet communications
across a variety of network infrastructures. ADTRAN solutions are
currently in use by service providers, private enterprises, government
organizations, and millions of individual users 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.

CONTACT:

ADTRAN, Inc.
Jim Matthews, 256-963-8775
Senior Vice
President/CFO
or
INVESTOR SERVICES/ASSISTANCE:
Gayle
Ellis, 256-963-8220

KEYWORDS: United States Europe North America Alabama Germany

INDUSTRY KEYWORDS: Technology Hardware Internet Networks Software Telecommunications Mobile/Wireless Communications Other Communications

MEDIA:

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