Clarent Appoints Frank Lee as President, China Operations.

Business Editors/High-Tech Writers

BEIJING--(BUSINESS WIRE)--Aug. 20, 2001

Clarent Corp. (Nasdaq:CLRN), a leading provider of voice solutions for next generation networks, today announced the appointment of Frank Lee as president of Clarent's operations in China. The newly created position reaffirms Clarent's strong commitment to the country; one of the fastest growing telecom markets in the world. Concurrently with this appointment, Lee will also serve as vice president of business development for Clarent in Asia Pacific.

As president of Clarent's operations in China, Lee is responsible for the supervision and management of the company's overall business activities in the country, including strategic planning, business development, sales, marketing and customer services. Lee joins Clarent with more than 20 years of technology industry experience, including various senior management positions in sales, marketing and engineering with a number of multinational companies, including Compaq, Hewlett Packard and Telstra.

"Frank brings to Clarent a wealth of experience in the telecom and IT industry in Asia Pacific, and in particular, China," said Mike Vargo, CEO, Clarent Corp. "His expertise, vision and leadership will be instrumental in helping steer Clarent's business, especially in the open access market, to even greater growth in the region."

Before joining Clarent, Lee was director for Compaq Computer Corp.'s telecommunications line of business, where he was responsible for managing and developing Compaq's telecom business in the greater China region, including the establishment of Compaq's telecom solution center in Shanghai. Prior to Compaq, Lee spent three years at Hewlett Packard as director, communications solution business, for Asia Pacific. At HP, he oversaw the company's field sales, marketing and technical support organizations in the region. Lee also worked for Tandem Computers in Hong Kong as a telecom industry marketing manager, focusing on the Greater China market. Notably, Lee spent more 16 years at Telstra in Australia where he held a variety of management roles, including business planning, product marketing, network planning and operations for both fixed line and wireless networks. Lee holds an MBA from Monash University in Australia, and a Bachelor's of Electrical Engineering from the Royal Melbourne Institute of Technology in Australia.

"China is an important part of Clarent's global business strategy," said Matthew Chiang, president, Clarent Asia Pacific. "With Frank's proven track record and extensive knowledge of the telecom industry, he can help attain even stronger results for Clarent in the growing China market."

Clarent recently shifted its business strategy to focus on the explosive growth opportunities in the open access or "last mile" market. In line with this shift, Clarent announced several structural and leadership changes that are designed to enable the company to extend its leadership position in this sector.

"I'm very confident in the development of China's telecom market, and strongly believe that Clarent's business strategy will enable the company to leverage and capitalize upon this growth," said Lee. "With the rapidly growing demand for Internet access and new investments in broadband infrastructure, China's `last mile' market represents immense opportunities for Clarent's OpenAccess solution."

Clarent began operating in China in 1997, and has quickly established its leading position in the country's VoIP market. Currently, three out of the seven government sanctioned service providers in China are Clarent long-term customers. Last month, the company built the VoIP network for Beijing's 2008 Olympic Games Bid Committee (BOBICO). This network delivered the historic news that Beijing was elected to host the Games of the 2008 Summer Olympiad.

About Clarent

Clarent Corp. (Nasdaq:CLRN) is a leading provider of voice solutions for next generation networks. Clarent's solutions enable service providers to deploy a converged network (voice, data and applications). Clarent solutions reduce costs and increase operating efficiencies while delivering innovative new services that allow end users to manage their communications. Founded in 1996, Clarent is headquartered in Redwood City, Calif. and has offices in Asia, Europe, Latin America and North America. For more information please visit www.clarent.com.

Forward Looking Statements

This release may contain forward-looking statements that involve risks and uncertainties, including statements relating to Clarent's future growth particularly in China and the Asia Pacific region. These statements involve risks and uncertainties, including those associated with the future demand for and adoption of IP communications in China, potential issues relating to changes in market conditions, interoperability, inability to introduce new products, ability to retain customers, government regulations, the international communications industry, technological changes and other factors, which could cause actual results to vary materially from those expressed in or indicated by the forward-looking statements. These risks and uncertainties are described further in the risk factors discussed in Clarent's periodic filings with the SEC.

Trademarks

Clarent, the Clarent logo, Clarent OpenAccess, NetPerformer, DynaStar, Clarent Command Center, Clarent ThroughPacket, Clarent CPG, PowerCell, SkyPerformer, ACTview and ServiceXchange are trademarks or registered trademarks of Clarent Corp. in the United States and other jurisdictions. All other trademarks, registered trademarks and service marks are the property of their respective owners.