ADTRAN Announces DSLAM Deployments at Qwest; Total Access 1100 OSP DSLAMs Used for Outside Plant Deployment.

Business Editors/High-Tech Writers

HUNTSVILLE, Ala.--(BUSINESS WIRE)--March 12, 2004

ADTRAN(R), Inc. (NASDAQ: ADTN), The Network Access Company, and leading provider of telecommunications equipment, today announces that it has begun volume shipments of the Total Access 1100 OSP DSLAMs to Qwest. This innovative line of environmentally hardened DSLAMs is self-contained, weather-tight and temperature-hardened for deployment at the edge of the network.

ADTRAN introduced the Total Access 1100 Series of OSP DSLAMs last fall. These DSLAMs can be line or locally powered and are able to be mounted in any outdoor environment including walls, pedestals, poles, cross-boxes, remote terminals and other challenging locations. This remote location OSP solution delivers DSL to areas that, in the past, have not been economically feasible.

About ADTRAN

ADTRAN, Inc. is one of the world's most successful telecom equipment suppliers, with a 16-year history of profitability and a portfolio of more than 1,300 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 domestic service provider and many international ones, as well as by thousands of public, private and governmental organizations worldwide.

ADTRAN products are RUS accepted and feature a five or ten-year warranty on every product. For more information, contact the company at 800 9ADTRAN (800 923-8726) or via email at [e-mail]. On the web, visit www.adtran.com.