DMT Line Code for VDSL Endorsed by Eleven Leading DSL Vendors

6/4/2003 - Eleven leading DSL semiconductor and system vendors announced their support of discrete multi-tone (DMT) modulation as the line code for standard-compliant very-high-bit-rate digital subscriber lines (VDSL). This vendor group, who together supply the dominant share of ADSL ports shipped worldwide, have paved the way for seamless migration to VDSL broadband access. The supporting companies include Alcatel (NYSE: ALA - News), Analog Devices, Inc. (NYSE: ADI - News), Broadcom Corporation (Nasdaq: BRCM - News), Ericsson (Nasdaq: ERICY - News), Ikanos Communications, Intel Corporation (Nasdaq: INTC - News), LSI Logic Corporation (NYSE: LSI - News), Nokia (NYSE: NOK - News), STMicroelectronics (NYSE: STM - News), Texas Instruments Incorporated (NYSE: TXN - News) and Thomson Multimedia (NYSE: TMS - News).

"DMT line coding for VDSL has been promoted for many years," said Matt Davis, Director of Broadband Access Technologies for The Yankee Group. "With 11 of the leading DSL silicon and systems providers supporting DMT, which represents the majority of the DSL market, it is clear that DMT is on track to become the favored modulation for standardized VDSL deployments worldwide."

DMT is the most widely deployed DSL line code, with more than 36 million ADSL lines deployed worldwide at the end of 2002, according to a study by Point Topic. Extending DMT capabilities from ADSL to VDSL sets the stage for a multi-DSL infrastructure capable of providing a wide range of services from Internet access and packet telephony to high-quality digital video. The unified line code approach also supports evolution toward a strong retail model for universal DSL.

"Alcatel has supported DMT ADSL from the very beginning," said Willem Verbiest, Vice President of the Access Business Unit for Alcatel, the world leading DSL supplier with 37.7 percent of the global market. "The best option to move this installed base forward with new DSL technologies, including VDSL, is to build on that same DMT technology base. DMT technology provides optimal performance in the field, while facilitating common management of all DSL flavors."

The overwhelming industry support for DMT stems from several key technical advantages, which include superior performance under real-world noise and wiring conditions, ADSL interoperability, unmatched flexibility in spectrum and power management, and use of existing and emerging DSL line testing and qualification methods. DMT VDSL also provides a pathway to dynamic spectrum management, which is generally viewed as one of the next major advancements in DSL.

"DMT was selected for ADSL because other candidate line codes could not match its performance, which was verified in independent testing by Telcordia (then Bellcore) in what was known as the 'ADSL Olympics'," remarked John Cioffi, Hitachi America Endowed Chair and Professor of Electrical Engineering at Stanford University. "Those same performance benefits and advantages are magnified at higher speeds, particularly in VDSL."

Notes Behrooz Rezvani, founder and CTO at Ikanos Communications and Chairman of the VDSL Alliance, "Today, Ikanos has shipped over 500,000 DMT VDSL ports to major carriers worldwide to offer over 50 Mbps services to consumers. In many evaluations, carriers and system vendors selected DMT VDSL due to its superior performance and overall cost benefits."

"As one of the first vendors to offer DMT VDSL solutions, Nokia believes in open standards to enable the whole industry to move forward. Nokia believes DMT provides the best technology opportunity for open global standards which will enable high-value broadband services to be deployed by operators, while allowing subscribers to get the services they want," comments Markku Hynninen, Vice President, Broadband Systems, Nokia Networks.

"A pioneer in the development of DMT DSL solutions, STMicroelectronics offers today a DMT VDSL chipset," commented Leon Cloetens, General Manager of STMicroelectronics' Access Division. "It demonstrates DMT flexibility to address the different band plans with one single reference design, environment robustness, loop diagnostic capabilities and a common management interface for ADSL/VDSL systems."

Supporting more than 70 Mbps downstream and over 50 Mbps upstream on telephone lines, DMT VDSL provides network operators the bandwidth to deploy competitive voice, video and data services and other emerging applications, including Ethernet in the First Mile (EFM). DMT VDSL reduces capital expenditures significantly and saves network build-out time when compared with fiber-to-the-home (FTTH) networks.

"After pioneering QAM VDSL chipset development for many years, Broadcom now supports DMT as the right choice for the VDSL line code," said Dan Marotta, Vice-President and General Manager of Broadcom's Broadband Communications Business Unit. "Since we have expertise in both QAM and DMT technology we could have gone either way, but based on our analysis of the latest advancements, we chose DMT as the winning technology."

"Consolidating ADSL/VDSL into a single line code is key to streamline networks allowing lower operational costs," said Ragnar Erkander, Vice President of Broadband Access Portfolio Management at Ericsson AB. "Creating a common line code for ADSL and VDSL will also lay the foundation for software- configured DSL ports, which is crucial to reaching high network utilization rates."

"DMT VDSL is a win for the entire industry," said Greg Jones, General Manager of the DSL Business Unit of Texas Instruments. "All major semiconductor vendors offer ADSL chipsets, so choosing the same line code for VDSL will speed time to market, enabling rapid growth of high-speed service offerings."

Jacques Ruch, Product Line Director, High-Speed Network Access Products for Analog Devices, Inc. adds, "DMT VDSL provides key benefits such as interoperability and compatibility with today's installed base of ADSL equipment. These features will provide a seamless migration path and cost savings for operators."

"LSI Logic enthusiastically supports DMT line coding for VDSL to leverage all the knowledge derived in evolving ADSL to a mass market technology," said Siva Sivakumar, Senior Director, DSL Business Unit of LSI Logic Corporation.

The sources of this release support the selection of DMT as the line code standard for VDSL. Standards bodies currently working toward a line code selection include the Committee T1 Working Group T1E1.4, the IEEE 802.3ah Ethernet First Mile Task Force and the ITU-T Study Group 15. All three groups have stated their intention to select a VDSL line code for standardization within the next two months.

Alcatel provides end-to-end communications solutions, enabling carriers, service providers and enterprises to deliver content to any type of user, anywhere in the world. Leveraging its long-term leadership in telecommunications networks equipment as well as its expertise in applications and network services, Alcatel enables its customers to focus on optimizing their service offerings and revenue streams. With sales of Euro 16.5 billion in 2002, Alcatel operates in more than 130 countries. For more information, visit Alcatel on the Internet:

Analog Devices
Analog Devices is a leading manufacturer of precision high-performance integrated circuits used in analog and digital signal processing applications. The company is headquartered in Norwood, Massachusetts, and employs approximately 8,600 people worldwide. It has manufacturing facilities in Massachusetts, California, North Carolina, Ireland, the Philippines and the United Kingdom. Analog Devices' stock is listed on the New York Stock Exchange and the company is included in the S&P 500 Index. Learn more at

Broadcom Corporation
Broadcom Corporation is the leading provider of highly integrated silicon solutions that enable broadband communications and networking of voice, video and data services. Using proprietary technologies and advanced design methodologies, Broadcom designs, develops and supplies complete system-on-a- chip solutions and related hardware and software applications for every major broadband communications market. Broadcom's diverse product portfolio includes solutions for digital cable and satellite set-top boxes; cable and DSL modems and residential gateways; high-speed transmission and switching for local, metropolitan, wide area and storage networking; home and wireless networking; cellular and terrestrial wireless communications; Voice over Internet Protocol (VoIP) gateway and telephony systems; broadband network processors; and SystemI/O server solutions. These technologies and products support Broadcom's core mission: Connecting everything®. Broadcom is headquartered in Irvine, Calif., and may be contacted at 1-949-450-8700 or at

Ericsson is shaping the future of Mobile and Broadband Internet communications through its continuous technology leadership. Providing innovative solutions in more than 140 countries, Ericsson is helping to create the most powerful communication companies in the world.

Ikanos Communications
Founded in 1999 and based in Silicon Valley, Ikanos Communications has created a new class of silicon that serves the entire range of worldwide broadband markets and applications with a single programmable chipset. Ikanos' industry-leading A/VDSL chipset solution includes the SmartLeap(TM) family for Broadband Access Concentrators and the CleverConnect(TM) for Customer Premise Equipment. Ikanos enables equipment vendors to dynamically configure LRFE, EFM, VDSL-DMT 998, VDSL-DMT 997, VDSL-DMT Flex, and ADSL-DMT on Ikanos chipsets. For additional information about Ikanos Communications, please visit the company's Web site at

Intel, the world's largest chipmaker, is also a leading manufacturer of computer, networking and communications products. Additional information about Intel is available at

LSI Logic
LSI Logic Corporation (NYSE: LSI - News) is a leading designer and manufacturer of communications, consumer and storage semiconductors for applications that access, interconnect and store data, voice and video. In addition, the company supplies storage network solutions for the enterprise. LSI Logic is headquartered at 1621 Barber Lane, Milpitas, CA 95035,

Nokia is the world leader in mobile communications. Backed by its experience, innovation, user-friendliness and secure solutions, the company has become the leading supplier of mobile phones and a leading supplier of mobile, fixed broadband and IP networks. By adding mobility to the Internet Nokia creates new opportunities for companies and further enriches the daily lives of people. Nokia is a broadly held company with listings on six major exchanges. For more information, please visit the company's website at

STMicroelectronics is a global leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets. The Company's shares are traded on the New York Stock Exchange, on Euronext Paris and on the Milan Stock Exchange. In 2002, the Company's net revenues were $6.32 billion and net earnings were $429.4 million. Further information on ST can be found at

Texas Instruments
Texas Instruments Incorporated provides innovative DSP and analog technologies to meet our customers' real world signal processing requirements. In addition to Semiconductor, the company's businesses include Sensors & Controls, and Educational & Productivity Solutions. TI is headquartered in Dallas, Texas, and has manufacturing, design or sales operations in more than 25 countries. Texas Instruments is traded on the New York Stock Exchange under the symbol TXN. More information is located on the World Wide Web at

Thomson (NYSE: TMS; Euronext Paris: 18453) provides a wide range of video (and enabling) technologies, systems, finished products and services to consumers and professionals in the entertainment and media industries. To advance and enable the digital media transition, Thomson has four principal divisions: Content and Networks, Consumer Products, Components, and Licensing. The company distributes its products under the Technicolor, Grass Valley, THOMSON and RCA brand names. For more information:

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