ALLTEL Supply Receives Distribution Rights to ADTRAN TRACER, Next-Generation T1 Wireless System.

HUNTSVILLE, Ala.--(BUSINESS WIRE)--April 27, 1999--

ADTRAN, Inc. (Nasdaq:ADTN), a leader in high-speed digital communications products, announced today that ALLTEL Supply, Inc., a business unit of ALLTEL (NYSE:AT), is now distributing the TRACER(R) Digital Spread Spectrum Radio, ADTRAN's license-free dual T1 wireless transmission system, in the domestic United States.

ALLTEL is an information and technology company providing wireline and wireless communications and information services, and a leading distributor of communications and data networking equipment for data networking service providers and end users. ALLTEL Supply is providing first-level technical support to resellers of TRACER, and is pre-bundling the system with complementary equipment to provide a complete wireless T1 solution.

"As a distributor of other popular ADTRAN networking technologies, we are pleased to add TRACER to our product line," said Dave Hadley, vice president of sales for ALLTEL Supply, Inc. "We believe it delivers the industry's most cost-efficient solution for establishing wireless T1 and will be in demand among resellers."

According to Dan Pritchett, ADTRAN's director of sales and marketing for wireless products, "ALLTEL's extensive distribution channels will help broaden awareness for TRACER within the fast-growing wireless market. We are happy to be working with them in this endeavor."

ADTRAN TRACER offers the capacity of two T1s at a price comparable to a single T1 wireless system, and provides point-to-point connections for up to 30 miles. TRACER operates in the FCC's unlicensed 2.4 GHz ISM band, so it can be quickly installed without time-consuming and expensive frequency coordination. The system is designed for use by cellular and PCS service providers, as well as private networks requiring high-speed wireless connections for voice, data or video applications.

About ALLTEL Supply, Inc.

ALLTEL Supply, a business unit of ALLTEL (NYSE:AT) is headquartered in Norcross, GA, and is one of the nation's leading providers of telecommunications and data communications equipment. ALLTEL Supply offers more than 35,000 products from 500 manufacturers through a professional sales team and a network of nationwide distribution centers and Communications Products Centers. ALLTEL is a customer-focused information technology company that provides wireline and wireless communications and information services.

About ADTRAN, Inc.

Established in 1985, ADTRAN, Inc. is a leading provider of network deployment and access solutions for delivering today's digital telecommunications services over existing copper infrastructures. Today, ADTRAN technologies support more than two-million local loops worldwide. More than 500 ADTRAN products support all major digital technologies, including T3, T1, E1, Frame Relay, DDS, HDSL, xDSL, ISDN, and wireless transport. In the Telco and enterprise markets, ADTRAN produces a complete end-to-end solution that provides the greatest network efficiency and lowest possible telecommunications costs.

According to Dataquest and IDC, ADTRAN holds revenue-leading positions in the Frame Relay/DDS, ISDN Extension and HDSL/T1/E1 network and access markets. ADTRAN customers include the Regional Bell Operating Companies, interexchange carriers, GTE, domestic independent service providers, corporate end users, international customers and original equipment manufacturers.

For more information, contact the company at 800 9ADTRAN (800/923-8726), 256/963-8000, or via e-mail at [e-mail]. On the web, visit www.adtran.com.