Clarent Continues Softswitch Evolution with Scalability Enhancements to the PSTN Access Softswitch

7/16/2002 - Clarent Corporation (OTC: CLRN), a leading provider of IP Softswitch and enterprise voice and data convergence solutions for next generation networks, today announced scalability enhancements to the Clarent PSTN Access Softswitch. Designed to meet the performance and capacity requirements of large carriers, the PSTN Access Softswitch solution is composed of individually scalable components running on high availability Unix-based platforms. By increasing the scalability of selected network elements and allowing seamless interoperability with existing Clarent networks, Clarent enables current and prospective customers to take advantage of this superior architecture to cost-effectively grow their networks.

Newly released network elements include the highly scalable Clarent BHG 1000 media gateway, which is capable of supporting as few as 120 universal voice, fax or data ports per chassis and more than 10,000 ports in a standard seven foot rack. Designed to interoperate seamlessly with installed Clarent networks, the BHG 1000 can be deployed with the Clarent BHG 8000, other Clarent gateways and selected third party gateways.

Clarent’s solution has been further tailored to support incremental growth with the release of the Integrated SS7 Signaling (ISS) 1000 and integrated Clarent Announcement Server (CANNS), which can be easily integrated into the softswitch platform. These products provide full functionally while allowing service providers to reduce risk by matching capital expenditures to revenue generation.

“Since 1997 our customers have required that Clarent VoIP solutions address their near-term requirements while maintaining the capability to rapidly evolve with growing networks and changing business models,” said Steve Langion, Clarent’s Senior Vice President of Engineering. “The PSTN Access Softswitch represents the logical next step in the evolution of Clarent’s product line, and increased scalability benefits new and existing customers alike. New customers have the opportunity to deploy a highly flexible, scalable and resilient VoIP offering that leverages Clarent’s proven expertise, while current customers can enjoy the advantages of Clarent’s Distributed Softswitch Network Architecture while preserving their existing investments.”

Service providers worldwide rely on Clarent’s proven IP-based solutions, and by the end of 2001 Clarent-based networks were supporting nearly three quarters of a billion revenue-generating international VoIP minutes a month. Clarent’s PSTN Access Softswitch, a software-driven Voice over IP (VoIP) solution, enables wholesale transit and termination of voice traffic over global IP networks. This highly flexible softswitch also supports retail pre-paid and post-paid calling card applications and minutes exchange with hundreds of IP networks around the world.

Because Clarent solutions support multiple business models, Clarent customers can increase their overall return on investment. Service providers who have already deployed the PSTN Access Softswitch solution can leverage the common, underlying architecture to offer complimentary services to the enterprise, small office/home office (SoHo), and residential customers using Clarent’s Edge Access Softswitch. The Clarent Edge Access Softswitch supports managed services for the enterprise ranging from simple hosted network services for WAN trunking to converged voice and data services utilizing Clarent’s NetPerformer EG. The Edge Access Softswitch also presents an access agnostic solution that supports lower density VoIP over broadband for residential and SoHo applications.

About Clarent
Clarent Corporation is a leading provider of softswitch and enterprise convergence solutions for next generation networks. Clarent solutions enable service providers and enterprises to quickly deploy an integrated network capable of carrying both voice and data traffic, deliver capital and operating expense savings, and generate new revenue opportunities with innovative services. Founded in 1996, Clarent is headquartered in Redwood City, California, and has offices in Asia, Europe, and North America. For more information please visit

Forward Looking Statements
This release contains forward-looking statements that involve risks and uncertainties, including but not limited to the ability of Clarent or its recently appointed officers, including our CEO, President and CFO, to quickly integrate with and manage the Company's personnel and business, general market conditions affecting communications service providers purchase of equipment, in particular, VOIP-related equipment, changes in service providers' business models, the ability of and resources available to our distribution partners to sell and support our products, the rate our customers deploy their networks, the timing of order and shipments of products, mix of products sold, changes in the prices of our components, ability to maintain production volumes and secure key components, our ability to develop new products to meet market demand, ability to retain key employees, as well as uncertainties associated with the future development of the markets for IP-based communications and changes in the global economic market. Certain of these risks and uncertainties are described further in the Company’s periodic filings with the SEC.

Clarent and the Clarent logo are trademarks or registered trademarks of Clarent Corporation in the United States and other jurisdictions. All other trademarks, registered trademarks and service marks are the property of their respective owners.

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