ADTRAN Flagship Product to Revamp Independent Telco

Total Access 5000 Upgrades Otelco to IP

ADTRAN Flagship Product to Revamp Independent Telco


Total Access 5000 Upgrades Otelco to IP

HUNTSVILLE, Ala. - -April 18, 2007 - -ADTRAN, Inc. (NASDAQ: ADTN), a leading supplier of next -generation network solutions, today announced that it has signed a letter of agreement to change the Otelco - Mid -Missouri Division's network to full Ethernet through the ADTRAN Total Access 5000. This will provide the Mid -Missouri Division with enhanced services and enable it to launch new services like IPTV and Voice over IP (VoIP) and leverage legacy services across an all IP/Ethernet core.

"We selected the ADTRAN solution because it supports both IP and legacy services, allowing for a quick and easy transition to converged networks," said Gary Romig, vice president of the Mid -Missouri Division. "Strong technology aside, their service reputation and commitment to this marketplace is something that independent telcos have rarely seen from the industry's technology leaders."

"We recognize many companies use the independents as testing grounds for products planned for larger facilities. The Total Access 5000 was designed to meet the needs of independent telephone companies," said P. Steven Locke, vice president of sales, service providers, ADTRAN Carrier Networks Division. "We are making it very clear that we are committed long -term to the independent market."

The ADTRAN Total Access 5000 is a carrier class multi -service access and aggregation platform that bridges the gap between existing and next -generation networks. It supports both legacy and emerging service interfaces over copper and fiber, easily scaling to support bandwidth intensive applications. The Total Access 5000 provides a clear migration path for traditional services like voice, but is also designed to enable new service deployments such as Fiber to the Node (FTTN), Fiber to the Premises (FTTP), and Ethernet over Copper (EoCu).

About ADTRAN
ADTRAN, Inc. is a leading global provider of networking and communications equipment, with a portfolio of more than 1,600 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.

CONTACT:
ADTRAN, Inc.
Tammie Dodson, 256 -963 -6739
tammie.dodson@adtran.com

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