SPM Spirent Comm Plc Adr

Teranetics 10GBASE-T PHY Being Demonstrated at Interop 2007 SANTA CLARA, Calif., May 21 /PRNewswire-FirstCall/ -- Teranetics, Inc., a leading mixed-signal fabless IC company, and Spirent Communications plc (NYSE:SPM)(LSE:SPT), a global provider of performance analysis and service management solutions, today announced a joint technology demonstration of Spirent TestCenter(TM) configured with the 10GBaseT interface using Teranetics enabled 10GBaseT technology. The demonstration will be conducted at Interop 2007, May 22-24, in Las Vegas. The Spirent TestCenter data communications test platform is used to accelerate the functional and performance testing of next generation networking equipment being deployed in today's converging networks. The 10GBASE-T demonstration uses Spirent's existing Multiple MSA 10-Gigabit Ethernet core test module (MSA-2001B). This high density, two port single slot 10GbE test module is the industry's most flexible 10-Gigabit Ethernet system due to its ability to support a wide range of interchangeable, hot swappable 10GbE interface types. The 10GBASE-T interface is based on the Teranetics single-chip TN1010 PHY. It can test and characterize 10Gbps communication over Unshielded Twisted Pair (UTP) copper according to the 802.3an standard, including connectivity. "The ability to demonstrate 10GBASE-T adds a significant dimension to the flexibility and potential of the Spirent TestCenter(TM)", said Chris Bohrson, vice president of marketing at Spirent. "Teranetics is the only single-chip solution available on the market that met Spirent's requirements for minimum footprint and power consumption." "The demonstration of the TN1010 chip in Spirent's TestCenter test module represents a significant endorsement of our 10GBASE-T product," said Kamal Dalmia, vice president of marketing at Teranetics. "With a 10Gbps infrastructure planned for the Spirent TestCenter platform, organizations can verify that their IT infrastructure can support new bandwidth-intensive applications like high performance computing, high-definition video transfers and peer-to-peer services over existing twisted pair copper instead of more expensive fiber optics. We are delighted that Spirent selected the TN1010 for their Spirent TestCenter solution." The 10 Gb/s Standard Ratified by the IEEE in June 2006, 10GBASE-T (IEEE 802.3an) defines the transmission of 10Gbps Ethernet over UTP copper cabling. As with previous speed generations of Ethernet technology, the creation of the copper standard lowers the cost of 10Gbps network links below that of optical technologies and further accelerates the adoption of 10-Gigabit Ethernet into network infrastructures. The Teranetics TN1010 PHY further simplifies adoption of 10-Gigabit Ethernet due to its ability to connect to existing 1-Gigabit ports via its industry standard 10G/1G auto-negotiation feature. About Teranetics Teranetics is a leading provider of silicon solutions that enable significantly higher data rates over structured copper cabling than are currently available in today's Ethernet network environments. Led by a team with exceptional expertise and experience in the development and application of mixed-signal semiconductor solutions and digital communication technologies, Teranetics is the first company to ship a production-ready 10GBASE-T semiconductor designed for next generation network applications. Teranetics is backed by a strong consortium of venture investors with in-depth experience and success in the semiconductor and data networking markets. For more information, go to http://www.teranetics.com/. About Spirent Communications Spirent Communications (http://www.spirentcom.com/) is a global provider of integrated performance analysis and service assurance systems that enable the development and deployment of next-generation networking technology such as Internet telephony, broadband services, 3G wireless, global navigation satellite systems, and network security equipment. Spirent Communications' solutions are used by more than 1,700 customers in 30 countries, including the world's largest equipment manufacturers, service providers, enterprises and governments. Based in Sunnyvale, CA, Spirent Communications has 1,900 employees worldwide. Spirent Communications plc Ordinary shares are traded on the London Stock Exchange (ticker: SPT) and on the New York Stock Exchange (ticker: SPM; CUSIP number: 84856M209) in the form of American Depositary Shares ("ADS"), represented by American Depositary Receipts, with one ADS representing four Ordinary shares. Spirent Communications' sales to the United States government are made through Spirent Federal Systems Inc. http://www.spirentfederal.com/ Spirent, Spirent Communications and the Spirent logo are trademarks or registered trademarks of Spirent Communications plc. All other trademarks or registered trademarks mentioned herein are held by their respective companies. All rights reserved. Teranetics and TERAPHY are trademarks of Teranetics, Inc. All other product names and company names are trademarks of their respective holders. Contact: Dan Chmielewski Madison Alexander PR, Inc. for Teranetics 714-832-8716 This press release may contain forward-looking statements that are based on current expectations or beliefs, as well as assumptions about future events. By their nature, forward-looking statements are inherently predictive, speculative and involve risk and uncertainty because they relate to events and depend on circumstances that will occur in the future. You should not place undue reliance on these forward-looking statements, which are not a guarantee of future performance and are subject to factors that could cause our actual results to differ materially from those expressed or implied by these statements. These risks include the risks described from time to time in Spirent Communications plc's Securities and Exchange Commission periodic reports and filings. The Company undertakes no obligation to update any forward-looking statements contained in this press release, whether as a result of new information, future events or otherwise. DATASOURCE: Teranetics, Inc. CONTACT: Dan Chmielewski of Madison Alexander PR, Inc., +1-714-832-8716, , for Teranetics Web site: http://www.teranetics.com/ http://www.spirentfederal.com/

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