Integral Access Completes Interoperability with Taqua Systems and Joins the Taqua Open Partner Program (TOPP)

Combination of Next-Generation Class 5 Switch and Multi-Services Access Platform Extends Integrated Services to Network Edge and Customer Premises

HYANNIS, Mass., September 4, 2001- - Taqua Systems, Inc., a leading provider of next-generation Class 5 alternative switching platforms for voice and data convergence, and Integral Access, the intelligent MPLS access company, today announced that the two companies have successfully completed product interoperability, including full GR-303 compatibility, between the two switching platforms: Taqua Systems' award-winning Open Compact Exchange® (OCX®) and Integral Access' PurePacketNode™ multi-service access platform. In addition, it was also announced that Integral Access has joined the Taqua Open Partner Program (TOPP).

The joint Taqua/Integral Access solution will allow telecommunications service providers to extend cost-effective, enhanced Class 5 local voice services and data communications to the customer premises. As the platforms are open architected, service providers will also be able to maintain flexible deployment options via a single end-to-end solution over twisted pair, DSL, T1/E1, or fiber optic link.

"Taqua is committed to partnering with best-in-class companies, such as Integral Access, that provide immediate, cost-effective end-to-end solutions for our customers," said Douglas Klaiber, Taqua's Senior Director, Business Development. "There is great market demand and need for the joint Taqua/Integral Access solution, and we are presently pursuing several joint sales opportunities. We expect the OCX/PurePacketNode combination to be very successful in the global telecommunications service provider market."

In addition to interoperability testing, Taqua Systems and Integral Access will cooperate on penetrating the important independent operating company (IOC), competitive local exchange carrier (CLEC), and other global telecommunications service provider markets through a series joint marketing activities.

"Through our close partnership with leading providers of class 5 alternative switches, like Taqua Systems, we are able to provide network operators with a complete IP-based access network solution that integrates seamlessly with their voice switching infrastructure," said Guy Chenard, Vice President, marketing and Business Development, Integral Access. "The combination of the PurePacket system with Taqua's OCX is gaining traction among carriers for its operational efficiencies and ability to support all services on a single network."

About the Taqua Open Compact Exchange (OCX)

Taqua's OCX is a Class 5 alternative switching system with integrated SoftSwitch functionality that provides a clear migration path to next-generation packet-based networks. The OCX was purpose-built to create an entirely new model for delivering local telecommunications services - one which dramatically reduces initial and overall cost of ownership, while realizing the promise of voice/data network convergence. Based on a groundbreaking software and hardware architecture, the OCX transforms legacy proprietary, centralized switching environments into a next-generation distributed, intelligent and highly scalable network supporting more than 100,000 subscribers. The OCX incorporates a core set of CLASS and Custom Calling features and empowers third party service developers via its SIP, AIN and open API interfaces. By providing a scalable cost-effective alternative to legacy Class 5 switches, the OCX removes cost-of entry barriers and increases service flexibility for telecommunications carriers, including Independent Operating Companies (IOCs) and Competitive Local Exchange Carriers (CLECs).

PurePacket Overview

The PurePacket integrated access system enables carriers to deliver all services over a single network using virtually any transport media including copper pairs, xDSL, leased lines, and fiber links. It is the first and only 100 percent packet-based solution that uses an MPLS-based fabric to guarantee service level agreements. PurePacket is composed of PurePacketOUTburst® customer premise Integrated Access Devices (IADs); PurePacketNode™ carrier network aggregation devices for central offices, co-locations, and points of presence; PurePacketCompact™ for multi-dwelling/multi-tenant units (MDU/MTU); and the PurePacketOMS™ for network/element control and services management.

About Integral Access

Integral Access, Inc. provides multi-service packet-based access systems that enable carriers to offer differentiated services and combine voice/data on new generation IP-based networks, as well as traditional circuit switched infrastructures. The company's products are deployed by carriers in North America and Europe. Integral Access is based in Chelmsford, Massachusetts and is privately held. To contact Integral Access call +1-978-256-8833, visit us on the Web at http://www.integralaccess.com, or write to info@integralaccess.com.

About Taqua Systems

Taqua Systems, Inc., the Emerging Force in Telecommunications®, was founded to develop a clear alternative to legacy telecommunications switches. Taqua's Open Compact Exchange (OCX) is an End Office/Class 5 alternative switching system with integrated SoftSwitch functionality that provides a secure migration path to next-generation packet-based networks. The OCX offers breakthrough performance to service providers in an economical, easy-to-deploy solution. With headquarters in Hyannis, MA and facilities in Richardson, TX and Meriden, CT, Taqua is led by an experienced team of telecom professionals. Taqua is privately held and has received funding from some of the world's premier venture capital and investment companies. For additional information, please contact Taqua at 508-778-8808 or visit Taqua on the World Wide Web at http://www.taqua.com.

Note to editors: PurePacket, PurePacketNode, PurePacketCompact, and PurePacketOMS are trademarks of Integral Access, Inc. OUTburst, Integral Access, and the Integral Access logo are registered trademarks of Integral Access, Inc.