ADTRAN Equipment Selected by Verizon Business for IP Services

NetVanta Ethernet Switches and Total Access Multiservice Access Gateways to be Used for Hosted VoIP Services

ADTRAN Equipment Selected by Verizon Business for IP Services


NetVanta Ethernet Switches and Total Access Multiservice Access Gateways to be Used for Hosted VoIP Services

HUNTSVILLE, Ala. - -(March 7, 2007) -ADTRAN, Inc. (NASDAQ: ADTN) today announced that Verizon Business is adding ADTRAN's NetVanta Ethernet switches and Total Access 900 Multiservice Access Gateways (MSAGs) to its list of certified Voice over IP (VoIP) Customer Premises Equipment (CPE) for its VoIP services, including IP Flexible T1, IP Integrated Access and Hosted IP Centrex. This will provide greater flexibility and choice for existing customers, and increase Verizon's appeal to new customers.

ADTRAN is a recognized market -leader for Packet -based access gateways. The Total Access 900/900e gateways along with NetVanta Ethernet switches offer a simple and reliable means of deploying converged voice/data services, as well as a number of benefits in terms of competitive pricing, ease of installation and product warranty. These products are ideally suited for both SMBs as well as enterprise customers with distributed operations

"ADTRAN is a respected brand in the industry, and has for the past decade been an important network infrastructure and CPE provider for key Verizon Business advanced data services," said Jim Tyrrell, vice president for business voice products with Verizon. "Their Total Access Gateways further enhance our suite of hosted VoIP services."

"ADTRAN is pleased to strengthen our relationship with Verizon Business by supplying CPE for its hosted VoIP services," said Ted Cole, vice president of channel sales, ADTRAN Enterprise Networks Division. "Verizon Business is on the cutting -edge of converged networking and is one of the leading providers of VoIP services. Our high -quality, competitively priced Ethernet switches and IP access devices will allow Verizon Business customers to realize operational efficiencies, ease of implementation and added benefits from network convergence."

ADTRAN's Total Access 900 Series products integrate router, Quality of Service, firewall and SIP gateway into a single platform. The gateways, when used as standalone products, or in combination with NetVanta switches further simplify the delivery of network -based VoIP services and provide added enterprise -level features at a cost -effective price point.

About Verizon Business
Verizon Business, a unit of Verizon Communications (NYSE: VZ), is a leading provider of advanced communications and information technology (IT) solutions to large business and government customers worldwide. Combining unsurpassed global network reach with advanced technology and professional service capabilities, Verizon Business delivers innovative and seamless business solutions to customers around the world. For more information, visit www.verizonbusiness.com.

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.

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

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