Witness Systems Impact 360 Workforce Optimization Solution Rated Avaya Compliant

June 15, 2006

Application is interoperable with Avaya IP telephony and contact center solutions

For Immediate Release:

ATLANTA – Witness Systems (NASDAQ: WITS), a leading global provider of workforce optimization software and services, today announced that Impact 360™, its comprehensive workforce optimization solution, is compliant with key IP telephony and contact center solutions from Avaya (NYSE: AV), a leading global provider of business communications applications, systems and services.

The packaged Impact 360 workforce optimization solution powered by Avaya, which includes quality monitoring/full-time recording, workforce management, performance management and e-learning capabilities, has been successfully compliance-tested by Avaya for compatibility with Avaya Communication Manager 3.1, the company’s industry-leading IP telephony software. With Impact 360, organizations can capture, analyze and act on cross-functional information that impacts the performance of their contact center workforce, customer interactions and customer service processes.

“Being rated Avaya compliant signifies another milestone for our Impact 360 Workforce Optimization solution, which is sold by Avaya and its Business Partners,” said John Bourne, senior vice president of global product management, Witness Systems. “Building on the scalability of the Avaya Communication Manager 3.1 platform, the Impact 360 Workforce Optimization Packages – powered by Avaya – scale to approximately 800 users on a single server. This reduces the total cost of ownership of the software-based Impact 360 solutions, providing outstanding value to customers as compared to proprietary-based offerings.”

Witness Systems is a Premier member of the Avaya DeveloperConnection Program – an initiative to develop, market and sell innovative third-party products that interoperate with Avaya technology and extend the value of a company’s investment in its network. As a member of the program, Witness Systems is eligible to submit its solutions for compatibility testing by the Avaya Solution Interoperability and Test Lab in Lincroft, N.J. There, a team of Avaya engineers develops a comprehensive test plan for each application to verify whether it is Avaya compliant. Doing so ensures businesses can confidently add best-in-breed capabilities to their network without having to replace their existing infrastructure – speeding deployment of new applications and reducing both network complexity and implementation costs.

Through the DeveloperConnection program, Avaya provides a number of tools and capabilities to member companies. One example is Application Enablement Services (AES) – a set of application programming interfaces, protocols and Web services that makes it easier for developers to create Avaya-compatible networks, devices and applications. Witness Systems used AES to build Avaya interoperability into its Impact 360 software.

“By offering compliance testing to innovative companies like Witness Systems that are members of our DeveloperConnection program, Avaya promotes interoperable solutions that help businesses unleash powerful new possibilities,” said Eric Rossman, vice president, developer relations and technical alliances, Avaya. “They are able to use Intelligent Communications to connect employees and customers to information from wherever they are, over whatever device they have available – getting more out of their multivendor network and delivering new value to their bottom line.”

About Avaya
Avaya Inc. designs, builds and manages communications networks for more than 1 million businesses worldwide, including over 90 percent of the FORTUNE 500®. Focused on businesses large to small, Avaya is a world leader in secure and reliable Internet protocol (IP) telephony systems and communications software applications and services.

Driving the convergence of voice and data communications with business applications – and distinguished by comprehensive worldwide services – Avaya helps customers leverage existing and new networks to achieve superior business results. For more information visit the Avaya website: www.avaya.com. For more information on the Avaya DeveloperConnection Program, visit www.devconnectprogram.com.

About Witness Systems
Witness Systems (NASDAQ: WITS) is the worldwide leader in software and services that help businesses capture customer intelligence and optimize their workforce performance. The company’s Impact 360™ solution unites quality monitoring, compliance and IP recording, workforce management, performance management and e-learning. Primarily deployed in contact centers – as well as the remote, branch and back offices of global organizations – the workforce optimization solution captures, analyzes and enables users to share and act on cross-functional information across the enterprise. With Impact 360, organizations can improve interactions and the underlying back-office processes that enhance the customer experience and build customer loyalty. For more information, visit us at www.witness.com.

Cautionary Note Regarding Forward-looking Statements
Information in this release that involves Witness Systems’ expectations, plans, intentions or strategies regarding the future are forward-looking statements that are not facts and involve a number of risks and uncertainties. They are identified by words such as “anticipates,” “expects,” “intends,” “plans,” “believes,” “estimates,” and similar expressions. These statements are based upon information available to Witness Systems as of the date of this release, and the company assumes no obligation to update any such forward-looking statement. Forward-looking statements believed true when made may ultimately prove to be incorrect. These statements are not guarantees of future performance and are subject to risks, uncertainties and other factors, some of which are beyond our control and may cause actual results to differ materially from our current expectations. Some of the factors that could cause actual future results to differ materially from current expectations include fluctuations in customer demand and the timing of orders; the company’s ability to manage its growth; the risk of new product introductions and customer acceptance of new products; the rapid technological change which characterizes the company’s markets; the risks associated with international sales as the company expands its markets, including the risks associated with foreign currency fluctuations; the ability of the company to complete and integrate successfully any acquisitions or investments it may make; and the ability of the company to compete successfully in the future, as well as other risks identified under the caption “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in the company’s Form 10-K for the year ended December 31, 2005 and its Form 10-Q for the quarter ended March 31, 2006, as filed with the Securities and Exchange Commission.

Witness, Impact 360, Improve Everything and the Witness logo are the trademarks (registered or otherwise) of Witness Systems, Inc. protected by laws of the U.S. and other countries. All other trademarks mentioned in this document are the property of their respective owners.

W. Scott Horne, Media Relations
Avaya
908-953-3476
horne@avaya.com

Anne Patton
Witness Systems
770-754-8656
apatton@witness.com

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W. Scott Horne

Avaya

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