HUNTSVILLE, AL and IRVINE, CA--(Marketwire - Dec 15, 2011) - ADTRAN Inc. (NASDAQ: [ ADTN ]), a leading supplier of unified business and converged communications solutions, and Toshiba America Information Systems Inc., Telecommunication Systems Division ([ www.telecom.toshiba.com ]) announced today the availability of ADTRAN's Total Access^® 908 and 908e gateways for use in conjunction with [ Toshiba's IPedge™ IP communication system ]. Certified as interoperable with the IPedge family of systems, the ADTRAN gateways are used to convert T1/ISDN-PRI to SIP Trunks, allowing the connection of the IPedge systems to SIP Trunks for cost-effective business communications. The ADTRAN gateways are now available nationwide from [ Authorized Toshiba Dealers ].

"Toshiba Dealers can depend on the standards-based Total Access 900 Series IP Business Gateways for unsurpassed interoperability and reliability," said Chris Thompson, senior product manager, VoIP, ADTRAN Enterprise Networks Division. "We are excited about the relationship with Toshiba and the possibilities it holds for the future."

"ADTRAN's Total Access 900 Series IP Business Gateways provide reliable SIP Trunking connectivity for Toshiba's IPedge IP communication systems. We are very pleased to offer ADTRAN gateways as an integral part of our IPedge product offering," said Eric Abing, product manager, Toshiba America Information Systems Inc., Telecommunication Systems Division.

ADTRAN's Total Access 900 Series gateways offer the following benefits to Authorized Toshiba Dealers actively marketing Toshiba's IPedge IP communication systems:

• Solution-based industry-standard SIP implementation;
• Analog and PRI to SIP conversion for legacy support over a dynamic IP network;
• Dynamic bandwidth allocation, providing efficient bandwidth utilization;
• Standardized G.729a voice compression, requiring less bandwidth per voice call;
• Added survivability for network outages;
• Voice Quality Monitoring (VQM) for enhanced Quality of Service (QoS);
• Integral full-featured IP router for data support and Internet access;
• Stateful inspection firewall for network security;
• Quality of Service (QoS) for delay-sensitive traffic such as VoIP; and
• Industry-leading 10-year North American warranty.

About ADTRAN
ADTRAN Inc. is a leading global provider of networking and communication equipment, with a portfolio of more than 1,700 solutions. ADTRAN's products enable voice, data, video, and Internet communications across a variety of network infrastructures. ADTRAN solutions are currently in use by service providers, private enterprises, government organizations, and millions of individual users 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 ].

About Toshiba America Information Systems Inc.(TAIS)
Headquartered in Irvine, Calif., TAIS is comprised of three business units: Digital Products Division, Imaging Systems Division, and Telecommunication Systems Division. Together, these divisions provide digital products, services and solutions, including industry-leading portable computers; televisions, TV/DVD Combination products, Blu-ray Disc and DVD products, and portable devices; imaging products for the security, medical and manufacturing markets; and IP business telephone systems with unified communications, collaboration and mobility applications. TAIS provides sales, marketing and services for its wide range of products in the United States and Latin America. TAIS is an independent operating company owned by Toshiba America, Inc., a subsidiary of Toshiba Corporation.

About Toshiba
Toshiba is a world leader and innovator in pioneering high technology, a diversified manufacturer and marketer of advanced electronic and electrical products spanning digital consumer products; electronic devices and components; power systems, including nuclear energy; industrial and social infrastructure systems; and home appliances. Toshiba was founded in 1875, and today operates a global network of more than 490 companies, with 203,000 employees worldwide and annual sales surpassing 6.3 trillion yen (US$77 billion). Visit Toshiba's Web site at [ www.toshiba.co.jp/index.htm ].

© 2011 Toshiba America Information Systems Inc. All rights reserved. All product, service and company names are trademarks, registered trademarks or service marks of their respective owners. Information including, without limitation, product prices, specifications, availability, content of services, and contact information is subject to change without notice.