Spirent® Communications Joins Forces with Lumenare to Enable Rapid Deployment of Converged Networks; Partnership Unifies In-Depth Testing and Automation to Enable Rapid and Successful Launch of IPTV, IMS and Carrier Ethernet Services

Business Wire, March 27, 2006

ROCKVILLE, Md. -- Spirent Communications (NYSE:SPM)(LSE:SPT), today announced that it is teaming with Lumenare Networks(R) to provide the first fully integrated test automation solution. This partnership addresses the challenge of testing increasingly complex converged network technologies in the lab and during manufacturing. Spirent is a worldwide provider of integrated performance analysis and service assurance systems for next-generation network technologies.

"Carriers are facing increasing pressure to introduce competitive, high-quality new services, while their engineering resources are being constrained," said Jessy Cavazos, program manager, communications test and measurement, Frost & Sullivan. "There is an increasing demand for an integrated test solution that empowers service providers and network equipment manufacturers to reduce test cycle times and ensure the products and services are delivered right the first time."

The partnership brings together the industry's leading test lifecycle system with the industry's leading test solutions and expertise. The combined strength of Spirent's comprehensive suite of network test solutions and Lumenare's lab and test management and automation software will help customers reduce their time-to-revenue and decrease their risk of deploying new technologies. These are major issues facing service providers rolling out converged networks including Triple Play, IPTV, IMS, and new underlying Carrier Ethernet services.

"This initiative combines performance analysis with automation to make engineers better and faster at testing converged telecom networks," said Patrick Burns, president and CEO of Lumenare Networks. "Spirent was a natural choice for the partnership given the breadth of their product portfolio, depth of their expertise, and global presence. Additionally, they are highly professional, very creative and our teams work together seamlessly. Together we are responding to the total solution needs of the service providers."

"Integrating Lumenare's automation capabilities with Spirent's functional expertise will enable us to establish strong strategic relationships with our customers," said Barry Phelps, president, performance analysis solutions, Spirent Communications. "Our partnership provides an exponential benefit to service providers to help them launch competitive new services, like IPTV, and ensure a high quality of experience for their subscribers."

The solution, coupling product offerings from Lumenare and Spirent can increase testing by five to eight times the manual rate. A major carrier spending $10 million over two years on manual test processes, for example, could see CAPEX and OPEX savings in the order of $5 million. In addition, it allows for complex tests to be performed repeatedly -- using fully automated hardware setup and software configuration -- getting consistent results, quickly isolating problems, and ensuring a successful product or service launch. Automation also supports reusability of test procedures through the full life cycle, from development to manufacturing. It is the industry's first solution to provide proven ROI from automation at the device level, lab level, and corporate business level.

The combination of lab and test automation to provide a full test lifecycle management solution is a first in the industry. It integrates inventory control, configuration management, scheduling, test planning, execution, and reporting -- all enabled for local, distributed, or fully automated remote control. The solution can configure lab and test environments from any location in the world over the Web, and the tests themselves can be automated to run in a 24/7 "lights out" scenario.

About Lumenare Networks

Lumenare Networks provides enterprise-class software and services for test lifecycle management, to maximize the efficiency, utilization, and scalability of testing laboratories. Through the unique integration of lab and test automation, the Lumenare solution enables the dynamic management and control of complex test labs, regardless of technology. It applies across service providers and network equipment vendors alike, and enables collaboration across organizations to speed time to market. It enables more tests to be completed in less time -- while simultaneously increasing both the utilization of expensive lab resources and the quality and repeatability of results. Lumenare Networks, headquartered in Santa Clara, California, is a privately held corporation with development centers in Santa Clara and in New Delhi, India. For more information, please visit Lumenare online at www.lumenare.com.

About Spirent Communications

Spirent Communications (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'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 2005 revenue of $403.3 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). www.spirent.com. Spirent Communications' sales to the United States government are made through Spirent Federal Systems. www.spirentfederal.com.