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Companies to Collaborate on Product Interoperability, Co-Marketing and Sales Initiatives

WESTFORD, Mass., September 28, 1999 - Sonus Networks today announced that Ubiquity Software Corporation has joined Sonus' Open Services Partner Alliance (OSPA). With nearly 20 participating vendors, the OSPA allows carriers, application service providers, third-party independent service developers (ISDs) and telephony system software providers to rapidly develop and deliver competitive customer services and applications based on the Sonus Networks Open Services Architecture^TM (OSA).

As part of their activities in the Alliance, Sonus and Ubiquity will undertake initiatives to ensure interoperability between the companies' product lines. Additionally, the two companies will implement a co-marketing program and reference selling program, which will focus on helping service providers speed the process of identifying, selecting and deploying enhanced IP services in carrier networks.

"We are very excited to be working with an innovative market leader such as Sonus Networks," said Martin Sendyk, vice president, product marketing and general manager at Ubiquity. "Ubiquity's Helmsman^TM Service Creation Environment coupled with Sonus' advanced carrier-class networking products will put new power in the hands of enhanced IP service providers. Our partnership will allow these next-generation carriers to extend value-added IP services all the way to the end user's desktop."

"Today, everyone is trying to get a leg up on the competition, but only those carriers who identify, and rapidly deploy, the right combination of value-added services will succeed," said Gary Rogers, Sonus' vice president of sales and marketing. "We believe this partnership with Ubiquity will bring our carrier customers significant benefit, and we look forward to working together to further the broad-scale deployment of packet telephony solutions."

Enhanced IP service providers use Ubiquity's Helmsman Server and Service Creation Environment to rapidly build and deploy next-generation, revenue-generating services over IP networks. Working together in the Alliance, Ubiquity and Sonus will provide an advanced form of Application Power Networking by creating a direct interaction between business processes, the global telephone network and the Internet.

As part of their membership in the OSPA, Ubiquity will also collaborate with Sonus in a range of co-marketing and sales activities programs. These programs will include joint participation in industry events and conferences, online marketing opportunities, training seminars, reference selling and more.

About the Open Services Partner Alliance

Launched in June 1999, the OSPA has gained significant industry momentum, with membership of nearly 20 leading independent vendors offering subscriber-specified and user-provisioned services for the New Public Network. The OSPA gives carriers the flexibility to both develop and integrate "best of breed" applications, creating important new revenue streams. For participating partners, the OSPA provides open, published APIs, comprehensive developer tools, testing and support services, technology exchanges and co-marketing and sales activities. Equally important, the Alliance provides a unified customer/vendor forum for creating interoperable standards and technologies. Additional information on the OSPA is available at: http://www.sonusnet.com/partners. 

About Ubiquity

Ubiquity develops Application Powered Networks^TM, providing direct interaction between business processes, the global telephone network and the Internet, for Corporate and Carrier customers to create premium differentiated computer telephony services. The Helmsman product suite unites a complex array of telecom and IP resources with custom and industry standard software applications. Ubiquity is the recipient of four consecutive UK National Research and development awards since 1994 and was the overall winner of the National Multimedia and Innovation Award in 1995. The Company has offices located in Newport, South Wales and Kanata, Ontario, Canada. Ubiquity Software is an Affiliate of Newbridge Networks Corporation. Additional information is available at: www.ubiquity.net.

About Sonus Networks

Sonus Networks, Inc. is delivering a new class of carrier solutions that enable the movement of telephony to converged packet networks and the development of a new generation of innovative voice and data services. The award-winning Sonus Packet Telephony suite and Open Services Architecture (OSA) cut the time-to-market for competitive new service products from years to weeks, allowing carriers and third-party developers to sustain and expand marketshare, and build important new revenue streams. Its highly scalable products fully interoperate with and extend the life and utility of today's public network. Sonus, founded in 1997, is headquartered in Westford, Massachusetts and is privately held. Additional information is available at: http://www.sonusnet.com

Open Services Architecture and GSX9000 are trademarks of Sonus Networks. All other company and product names may be trademarks of the respective companies with which they are associated.

Helmsman and Ubiquity are registered trademarks of Ubiquity Software Corporation Ltd. 1999 Ubiquity Software Corporation Limited. All rights reserved.