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Sylantro Systems Selects Spirent Communication Abacus 5000 Test System.

SAN JOSE, Calif. -- Spirent's Abacus 5000 IP Telephony Test System Employed to Validate Massive Scalability and Reliability of Sylantro's Carrier-Class VoIP Applications

Spirent Communications(TM) (NYSE:SPM) (LSE:SPT), today announced that Sylantro Systems has selected Spirent's Abacus 5000 IP Telephony Migration Test System to validate the performance, scalability and reliability of its telecom-grade application server platform.

The comprehensive, high capacity Abacus 5000 IP Telephony Migration Test System incorporates triple play, conformance and security/robustness test methodologies. Triple-play testing provides thorough validation of voice services in the presence of data and video services across the IP and public switched telephone network (PSTN) infrastructures. Conformance testing ensures that products adhere to specified standards whilst robustness testing ensures that reliability and dependability concerns are minimized.

"Spirent's Abacus 5000 test system reinforces our customers' confidence that Sylantro is delivering a deployment-ready, reliable and massively scalable platform to the global IP communications service provider community," said David Illing, senior vice president of Sylantro. "The ability of the Abacus 5000 to emulate real-world VoIP and PSTN traffic under virtually limitless converged applications scenarios is enabling us to thoroughly stress and validate the carrier-grade performance of our platform before it ever reaches our customers' hands."

With Spirent's Abacus 5000 Test System, Sylantro can validate a full range of IP communications and signaling protocols in addition to its support of other emerging IP multimedia, and telephony applications and features, all at the highest capacity levels.

"Sylantro's carrier-scale applications server stands squarely in our roadmap to provide industry leading test platforms for network elements and services that are migrating from the PSTN to IP," said Bahaa Moukadam, vice president, IP Telephony at Spirent Communications. "Leveraging our expertise in both PSTN and IP, and ability to test across those boundaries, we will continue to lead in performance validation that is required to propel suppliers like Sylantro and their customers into the triple-play future."

Sylantro's decision to test with Spirent's Abacus 5000 Test System further affirms the momentum of VoIP among Sylantro's service provider customers around the world. As incumbent and competitive local exchange carriers, inter-exchange carriers, wireless carriers, cable operators and ISPs aggressively compete in this emerging market, they and their suppliers must validate the toll-grade readiness of their infrastructure to serve millions of telephony subscribers migrating from the PSTN to a converged network.

Spirent's Abacus 5000 IP Telephony Migration Test System is available to both service providers and manufacturers to verify the performance of applications servers, softswitches, IP/PSTN gateways and other next-generation equipment.

About Sylantro Systems Corp.

Sylantro Systems provides the premier software platform for advanced IP Centrex and hosted communications services for business, residential, wireless and other applications. The company leads the market in deployments, with carriers such as SBC and Verizon, PTTs such as TeliaSonera, and next-generation service providers such as Level 3, SunRocket and Covad using the Sylantro platform. With a unique combination of advanced applications, a carrier-class platform, and proven go-to-market services, Sylantro allows service providers to rapidly deliver high-value, high-margin managed telephony services. These award-winning solutions offer business users sophisticated communications services without the cost and complexity of today's in-house PBX and key systems, and give consumers new flexibility in their communications services. Sylantro is a privately held company backed by premier investors. On the Web:

About Spirent Communications

Spirent Communications ( 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's solutions are used by more than 1,500 customers in 30 countries, including the world's largest equipment manufacturers, service providers, enterprises and governments. Based in Rockville, Maryland, Spirent Communications reported 2004 revenue of $460 million and has 1,700 employees worldwide. The company is the largest business group of Spirent plc, traded on the London and New York Stock Exchanges (LSE:SPT)(NYSE:SPM) (CUSIP number:84856M209). Spirent Communications' sales to the United States government are made through Spirent Federal Systems.

Spirent, Spirent Communications and the Spirent logo are trademarks of Spirent plc. All other trademarks or registered trademarks are held by their respective companies. All rights reserved.

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 Spirent's 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's SEC periodic reports and filings. We undertake no obligation to update our forward-looking statements, whether as a result of new information, future events or otherwise.
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Publication:Business Wire
Geographic Code:4EUUK
Date:Mar 8, 2005
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