ADTRAN 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.