ADTRAN Unveils Innovative Voice Quality Monitoring Technology in NetVanta and Total Access VoIP Plat

Graphical User Interface Eases Monitoring and Management of VoIP Traffic

Contact:

Tammie Dodson
ADTRAN
256 -963 -6739
tammie.dodson@adtran.com

HUNTSVILLE, Ala. -(April 14, 2008) -ADTRAN®, Inc. (NASDAQ: ADTN), a leading supplier of innovative networking and communications equipment today announced the availability of Voice Quality Monitoring (VQM) as part of the ADTRAN Operating System (AOS). Products that will support VQM include: NetVanta® Routers, NetVanta IP Business Gateways and Total Access® 900 Series IP Business Gateways. ADTRAN's unique VQM suite allows network administrators or carriers to examine the data stream and identify problems, via an intuitive, graphic interface. Unlike other implementations, ADTRAN's graphics -based approach presents findings in an easy -to -use manner that significantly reduces the time devoted to identifying and troubleshooting voice problems. This allows for a rapid return to a high -quality service experience for Voice over IP (VoIP) users.


ADTRAN's VQM is unique in that it provides a graphical interface that allows network administrators to view both active and historical VoIP call statistics. The easy -to -read analytical charts and graphs allow service providers and administrators to assess overall network health quickly and easily. It also allows them the ability to closely examine areas with less than optimal call quality with the click of a mouse. VQM looks at the most important aspects of voice calls: Mean Opinion Score (MOS), delay, jitter and dropped or out -of -order packets. Administrators have the ability to perform data searches by any given parameter, including date, day, time, extension, VLAN, IP address, among others. Multi -term searches are even more powerful and allow administrators to pinpoint specific data by combining search terms such as searching for traffic on a specific extension on a specific day in a specific time range. This greatly expedites troubleshooting and problem resolution by reducing the amount of time spent parsing through unwanted or unneeded data.

"As midmarket customers embrace IPT, there is an increasing need for simple, integrated toolsets to drive quality and repeatability in the VoIP environment. These tools should offer reporting, trending and call -by -call visibility to allow for rapid trouble isolation and fine -grained optimization," said Robert Mason, principal research analyst, Gartner.

"Our approach to VQM stems from our desire to make ADTRAN platforms the easiest on the market to install and manage," said Tim Saunders, vice president of product management, ADTRAN Enterprise Networks Division. "When users experience poor voice quality, most don't know what type of problem they are experiencing; they just know it sounds bad. Our VQM implementation allows network administrators to quickly identify the problem(s) and investigate the source of the trouble quickly and easily via a non -invasive graphical interface."

VQM is currently available as part of the AOS at no additional charge. Platforms supporting VQM include:

Routers:
 NetVanta 1335
 NetVanta 3120
 NetVanta 3130
 NetVanta 3430
 NetVanta 3448
 NetVanta 4305
 NetVanta 5305 IP Business Gateways
 NetVanta 6355
 Total Access 900/900e

IP Communications Platforms
 NetVanta 7100
For more information on VQM visit: www.adtran.com/VQM.

About ADTRAN
ADTRAN, Inc. is a leading global provider of networking and communications equipment, with a portfolio of more than 1,700 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.


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