ADTRAN and Jetstream Demonstrate First-Ever VoDSL Solution Using SHDSL

Business Wire, June 4, 2001

Business Editors/Technology Writers

SUPERCOMM 2001

Booth 7731

DSL Forum Interoperability Showcase

ATLANTA--(BUSINESS WIRE)--June 4, 2001

Total Access 608 IAD and Jetstream CPX-1000 Voice Services

Platform to be featured at the DSL Forum Interoperability

Showcase at SuperComm

ADTRAN, Inc. (NASDAQ: ADTN), the market leader in local loop access equipment and Jetstream Communications, the leader in Voice over Broadband (VoBB) solutions, will showcase their jointly marketed enterprise VoDSL solution at the DSL Forum Interoperability Showcase at SuperComm 2001, Booth 207, June 5-7, 2001. Featured will be ADTRAN's Total Access(R) 608, a Carrier Class Integrated Access Device (IAD), which allows quick installation and immediate revenue generation for carriers deploying converged network services using TDM or packet-based VoDSL. Service providers can offer bundled voice and data services, based on VoBB technology that now incorporates the new worldwide DSL standard SHDSL. This is the first public demonstration of VoBB solutions using the new standard.

At the showcase, ADTRAN and Jetstream will demonstrate how the Total Access 608 interoperates seamlessly with the Jetstream CPX-1000 to provide a complete end-to-end packet voice solution. The Total Access 608 supports SHDSL and is powered by chipsets jointly developed by Infineon Technologies and ADTRAN. SHDSL is an ideal solution for service providers deploying VoDSL solutions because it offers the greatest industry-standard combination of rate, reach and spectral compatability.

"The DSL Forum offers a unique opportunity for vendors to come together to create interoperable solutions based on industry-standard DSL technologies," said Everett Brooks, Director of Market Development for ADTRAN's Enterprise Networks Division. "Visitors to the DSL Forum Booth will see the benefits of using these standards to develop flexible, robust applications such as the innovative VoDSL solution that ADTRAN and Jetstream will jointly demonstrate."

"We are excited to participate in this joint demonstration, the first-ever for a VoBB solution using SHDSL," said Stephen Gleave, vice president of marketing for Jetstream. "ADTRAN and Jetstream, as members of the DSL Forum, are committed to ensuring interoperability between our products, and others in the industry, and thus making installation and deployment of VoBB solutions as easy as possible for service providers and enterprise customers."

ADTRAN, Jetstream, and Infineon's memberships in the DSL Forum reflect their commitment to helping promote industry-standard DSL technologies. Each company pursues industrywide interoperability in order to develop versatile solutions for multiple applications.

About the Total Access System

ADTRAN's Total Access System is a distributed access solution that enables carriers to strategically plan and design their next-generation networks. The Total Access System includes Carrier Class, broadband and narrowband access platforms, outside plant access terminals, multiplexers, IADs, and concentrators, along with system management and professional services. Uniquely designed with "grow-as-you-go" modularity, Total Access promotes strategic network planning that breaks down barriers to profitability, overcomes logistical deployment challenges, and expands customer reach with the latest, copper-saving technologies.

About ADTRAN

ADTRAN, Inc. is an established supplier of advanced transmission products for today's expansive telecommunications networks. Widely deployed in carrier, CLEC, enterprise, and global networks worldwide, ADTRAN products support all major digital technologies including fiber, T3, T1, E1, wireless T1/E1, ATM, Frame Relay, VPN, SHDSL, SDSL, HDSL, HDSL2, ISDN, and DDS. According to Gartner/Dataquest and IDC, ADTRAN has gained the leading market position in enterprise integrated access devices and HDSL, while maintaining its leadership position for the fourth year in a row in T1 and subrate CSU/DSUs, Frame Relay/DDS extension, and ISDN extension. ADTRAN equipment serves the major Incumbent Local Exchange Carriers, interexchange carriers, ISPs, Competitive Local Exchange Carriers, international service providers, public and private enterprises, and original equipment manufacturers.

For more information, contact the company at 800 9ADTRAN (800 923-8726) or via e-mail at info@adtran.com. On the web, visit www.adtran.com.

About the Jetstream CPX-1000

The Jetstream CPX-1000 is a versatile, state-of-the-art voice services platform that enables business-quality voice services to be rapidly delivered via today's high-performance broadband access networks. The CPX-1000 interfaces to the public switched telephony network via GR-303-based connections to Class 5 switches, such as the Alcatel System 10, Ericsson AXE, Lucent 5ESS, Nortel DMS-100, and Siemens EWSD. The CPX-1000 interfaces to the packet network via Asynchronous Transfer Mode (ATM) and Frame Relay circuits. Embedded within the CPX-1000 software is a management agent that processes incoming requests from Jetstream management applications and responds by carrying out the specific actions required.