Released on = June 19, 2007, 6:28 am

Press Release Author = MRB Public Relations, Inc.

Industry = Telecommunications

Press Release Summary = 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.

Press Release Body = 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).

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 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 info@adtran.com. On the Web, visit www.adtran.com.


Web Site = http://www.adtran.com

Contact Details = Tammie Dodson
ADTRAN, Inc.
256.963.6739
press@adtran.com