Marconi Partners With Bay Microsystems on Marconi's Newly Announced MPG-1000 Media and Protocol Gateway Bay and Marconi Provide 10Gbps Media and Protocol Gateway Based On Bay's Montego Internetworking Processor, Software and Subsystem Solutions PITTSBURGH, Nov. 8 /PRNewswire/ -- Bay Microsystems, Inc., an industry leader in packet processing solutions, and Marconi Corporation plc (LONDON: MONI and Nasdaq: MRCIY) today announced a partnership that enables Marconi to provide its customers with a unique, high capacity (10Gbps), cost- effective and flexible Media and Protocol Gateway, the MPG(TM)-1000. Marconi's new MPG-1000 will be shown in the Marconi booth (#1132) and will be demonstrated in the StorCloud booth (#1542) this week at the SC2004 High Performance Computing, Networking and Storage Conference in Pittsburgh. The MPG-1000 delivers support for a variety of secure, high-capacity, high-speed traffic types, including multi-gigabit Ethernet, enabling mission critical transport between LAN, WAN, SAN, cluster computing and multimedia networks. The initial release of the MPG-1000 platform, planned for early 2005, features 1Gbps and 10Gbps Ethernet services over OC-48c and OC-192c ATM. The platform also will support interfaces for Infiniband, Packet over SONET, Fiber Channel, and SMPTE 292M (HDTV). "Bay Microsystems was an ideal partner for this project, working hand-in- hand with Marconi from project concept through final demonstration," said Dave Blakeney, vice president of engineering for Marconi's Broadband Routing & Switching group. "Bay's support enabled Marconi to quickly deliver a truly unique, OC-192c Media and Protocol Gateway platform." In addition, Bay provided a customized subsystem solution for the MPG-1000 platform based on Montego(R), the industry's only OC-192c/10G processor capable of classification, policing, segmentation and reassembly, and traffic management at wire rate. Bay's unique deterministic, superscalar, pipelined architecture supports a wide range of existing and emerging applications and protocols, including Ethernet, IPv6, IPv4, MPLS, POS, Frame Relay, ATM, PPP, L2VPN, L3VPN, VLAN stacking, DiffServ and more. "We are pleased to announce our partnership with a world-class networking company such as Marconi, and to employ our Montego OC-192c/10G processor to help develop Marconi's new high performance media and protocol gateway," said Chuck Gershman, president and CEO of Bay Microsystems. About Bay Microsystems Bay Microsystems is a privately held communications technology company delivering the building blocks of programmable packet processors, software and subsystems for high performance intelligent networks. Bay's Internetworking Processor(TM) (InP) family of products is scalable, intelligent and ultra high performance, and is in use within broadband networks developed by the U.S. Government and by commercial providers serving the metro-edge, metro-core, regional and long-haul markets. For more information visit http://www.baymicrosystems.com/. 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 and listed on NASDAQ under the symbol MRCIY. Bay Microsystems and Montego are registered trademarks in the U.S. Patent and Trademark Office. Internetworking Processor is a trademark of Bay Microsystems. All other trademarks are the property of their respective holders. DATASOURCE: Bay Microsystems, Inc. CONTACT: Tim Helms of Helms Communications, +1-925-606-6936 or , for Bay Microsystems; Bill Weisinger of Bay Microsystems, +1-408-653-2181 or ; or Geof Becker of Marconi, +1-724-742-6377 or Web site: http://www.baymicrosystems.com/

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