ADTRAN Introduces Comprehensive Business Ethernet Service Solution

Total Access 5000 Adds Ethernet over Copper Delivery

HUNTSVILLE, Ala. - - (June 19, 2007) - -ADTRAN, Inc. (NASDAQ: ADTN), a leading supplier of next -generation service delivery solutions, today announced an innovative solution to enable carriers to instantly deliver multi -megabit business data services across their entire service area. Unlike other solutions requiring large investment, ADTRAN's FastBreak allows carriers to leverage their existing business services infrastructure, whether it is SONET/SDH, DS1/E1 or HDSL. ADTRAN's FastBreak technology provides ubiquitous Ethernet service delivery across the entire network. All of this is provided from a single platform, the ADTRAN Total Access 5000, by introducing two new applications - Ethernet over Copper (EoCu) and Ethernet over TDM.

"Businesses require more bandwidth today, so carriers must find an economical means to migrate from Frame Relay or ATM to Ethernet to meet this demand. The vast majority of business sites will be using copper access for the foreseeable future," said Michael Howard, principal analyst and founder, Infonetics Research. "The ADTRAN FastBreak solution allows service providers to greatly improve Ethernet service time to market, since carriers can deliver next -generation services to an entire region by leveraging the ubiquitous TDM and copper business service infrastructure."

"With a single, centralized ADTRAN Total Access 5000 and the FastBreak solution, service providers can finally deliver next -generation business services to their entire customer base with minimal capital and operational investment," said Eric Vallone director of Product Management, ADTRAN Carrier Networks Division. "This provides carriers with instant network -wide footprint of multi -megabit Ethernet by leveraging the most understood and successful business -class transport solution today, DS1/E1. This greatly simplifies the back office and operational aspects of launching a next -generation Ethernet service.

To meet the requirements of this application, the Ethernet capabilities of the ADTRAN Total Access 5000 Multi -Service Access and Aggregation Platform (MSAP) deliver high -density EoCu access in accordance with Ethernet in the First Mile (EFM) standards and are complemented by the FastBreak solution using bonding techniques for Ethernet over TDM. ADTRAN's 800 Series devices terminate the full suite of business class DSL technologies at the customer premises for the delivery of Ethernet bandwidth. ADTRAN's EoCu solutions including FastBreak are equally supported on the recently announced ADTRAN Total Access 5006 which is a small, chassis -based system that is part of the ADTRAN Total Access 5000 MSAP family. ADTRAN has also provided enhanced diagnostic and performance management features that improve circuit turn -up and troubleshooting enabling service level assurances (SLAs).

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 microwave 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 On the Web, visit

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