LynuxWorks' LynxOS Powers Marconi Carrier-Class Broadband Switch

6/18/2003 - LynuxWorksTM, Inc. announced that its real-time operating system (RTOS), LynxOS®, has been selected by Marconi for use in its new SoftSwitch XCD5000 carrier-class broadband switch. In the new SoftSwitch XCD5000, LynxOS is used for the SoftSwitch Call Agent (SCA) and as the platform for the Media Firewall (MFW).

Marconi first selected LynxOS in 1993 to support its System X call-control processors, which allowed narrowband System X switches to support increasingly diverse telephony services. After evaluating several systems, Marconi selected LynxOS as the best fit in terms of functionality and performance and for its valuable enhancements relevant to future Marconi carrier-class products. Having experienced no system failures from LynxOS since deployment of the first enhanced System X switches in 1995, Marconi decided to base its SoftSwitch XCD5000 for next-generation broadband services on LynxOS. "When we first used LynxOS it worked straight out of the box and proved to be stable," said John Ward, development manager at Marconi. "It was natural to base the SoftSwitch XCD5000 on the latest available version of LynxOS."

The standards-based interfaces of LynxOS provide an ideal platform for application code integration, promoting code reuse and shorter development time. This approach allowed the Marconi team to quickly and easily migrate the application suite from System X to the SoftSwitch XCD5000 and to run existing application code on LynxOS alongside new applications written in C++.

"We're pleased that Marconi is once again leveraging LynxOS determinism and reliability in its newest product," said Greg Rose, director of product management at LynuxWorks. "LynxOS has proven itself in mission-critical applications—from flight critical software to communications infrastructure equipment—and we're confident that it will deliver the reliability and robustness needed in future generations of Marconi products."

About Marconi Corporation plc
Marconi Corporation plc is a global telecommunications equipment, services and solutions company. The company's core business is the provision of innovative and reliable optical networks, broadband routing and switching and broadband access technologies and services. The company's customer base includes many of the world's largest telecommunications operators.

The company is listed on the London Stock Exchange under the symbol MONI. Additional information about Marconi Corporation can be found at

About LynuxWorks
LynuxWorks is a world leader in the embedded software market, providing operating systems, software development products and consulting services for the world's most successful communications, aerospace/defense, and consumer products companies. Established in 1988, the company is a leading participant of the real-time operating systems (RTOS) industry, and a founding member of the Embedded Linux Consortium (ELC). LynuxWorks' headquarters are located in San José, California. The company's products include the open-source BlueCat® Linux® and the scalable, Linux-compatible LynxOS real-time operating system. World-class companies use LynuxWorks' products, including: 3Com, Alcatel, Boeing, Ericsson, Hewlett Packard, Jet Propulsion Laboratory, Lockheed Martin, Lucent Technologies, Marconi, Mitsubishi, Motorola, NEC USA, Raytheon, TRW and Xerox.

LynuxWorks is a trademark and LynxOS and BlueCat are registered trademarks of LynuxWorks, Inc. Other brand or product names are registered trademarks or trademarks of the respective holders. Linux is a registered trademark of Linus Torvalds.

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