Released on = May 31, 2007, 6:33 am

Press Release Author = MRB Public Relations Inc.

Industry = Telecommunications

Press Release Summary = MEF Compliant Solution Enables New Service Revenue from
Carrier Ethernet Delivery

Press Release Body = HUNTSVILLE, Ala. -- (May 31, 2007)--ADTRAN, Inc.
(NASDAQ: ADTN), a leading supplier of network access equipment, today announced two
new additions to its Ethernet in the First Mile over Copper (EFMC) portfolio. The
Total Access® 838 is the first offering of the Total Access 800 Series Network
Termination Units (NTUs). These MEF- certified devices are designed to equip
carriers with the tools that provide feature-rich Ethernet service delivery over
existing copper infrastructure. When combined with ADTRAN's Total Access 3000 DSLAM,
the Total Access 800 Series NTU provides carriers with a cost-effective end-to-end
solution allowing them to provide up to 45 Mbps Ethernet services to their customers
over copper pairs with minimal changes in infrastructure and maximum improvement in
operations.

The Iometrix test laboratory has certified that the products in ADTRAN's Ethernet in
the First Mile over Copper solution set, the Total Access 3000 DSLAM, Total Access
800 Series of NTUs, and MX3112 NTUs, are compliant with Metro Ethernet Forum (MEF) 9
and 14 specifications for the delivery and management of Ethernet Virtual Private
Line and Ethernet Private Line services. Carriers can now ubiquitously deploy these
certified solutions and be assured that they are offering high-bandwidth Ethernet
services with carrier-grade quality and reliability.

"ADTRAN is committed to supporting carriers in delivering differentiated
high-bandwidth Ethernet services. This solution, which also offers 802.3ah OAM,
provides improvements in bandwidth and reliability required by Metro Ethernet
services," said Eric Vallone, director of product management, ADTRAN Carrier
Networks Division. "The Total Access 3000 with EFMC capability combined with the
Total Access 838 has been designed to support a broad range of applications,
including DSLAM and mobile backhaul."

"Carriers are looking for ways to expand uses of their existing infrastructure
investments to drive new revenue and Ethernet over Copper is a natural," said
Michael Howard, principal analyst and co-founder, Infonetics Research. "These
additions complement ADTRAN's current Total Access product set with EFMC-standard
features so that carriers can extend the life of their copper plant as well as the
millions of dollars of DSLAMs they already have installed in their networks. ADTRAN
has added a new revenue generating capability to the existing installed base of
Total Access 3000 DSLAMs."

ADTRAN's continued commitment to the migration from circuit to packet through EFMC
implementation provides carriers the means to host multiple bonded circuits and
aggregate these circuits more efficiently into a single element, thus reducing
network complexity and operational expense. The results include increased overall
network efficiency, simplified network support, leverage of existing systems, and
reduction in overall costs for carriers and their subscribers.

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://

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