Sherbrooke, QUEBEC, September 17, 2007 – Nortel and Mediatrix Telecom, the leader in Voice over Internet Protocol (VoIP) access devices and gateways, have completed jointinteroperability tests verifying the compatibility of Mediatrix’ VoIP gateway and access devicesolutions with Nortel’s application and communication server solutions. This product compatibility enables mutual Mediatrix and Nortel Networks customers to seamlessly operate both solutions together in any telecommunications network environment.

The interoperability events tested Mediatrix 4100 Series of VoIP Access Devices, in both the SIP and MGCP Protocols, with Nortel’s Release SN09 of the Communication Server 2000 (CS 2000). The SIP version was also tested with the Nortel Application Server 5200(AS 5200). The same test success has been achieved for the Mediatrix 1100 Series gateways using both SIP and MGCP Protocols

"As the leading provider of a reliable and secure VoIP gateways and access devices, we are committed to offering our customers a set of solutions that will minimize the labor and expense requirements involved in implementing non-compatible devices," said Marc Skinner, Sales Director North America for Mediatrix Telecom. “We are pleased to work with Nortel to provide seamless interoperability of our respective solutions and to help further facilitate the growing VoIP industry for both the enterprise and service provider markets.”

About the Mediatrix 4100 Series
The Mediatrix 4100 Series are high-quality and cost-efficient VoIP gateways connecting larger branch offices and multi-tenant buildings to an IP network, while preserving investment in analog telephones and faxes. They also allow Service Providers to rapidly and economically deploy their solutions in medium-size premises and they are the ideal solution for branch office connectivity to larger private networks.

About the Nortel Developer Program
The Developer Partner relationship recognizes innovative companies whose creativity and presence enhance Nortel's ability to deliver Compatible solutions (as referenced below) to our mutual channels and customers.

The Nortel Developer Program provides the infrastructure and tools necessary to engage and collaborate with an expanding field of companies, whose vision and product capabilities complement those of Nortel. Through the Developer Program, Nortel creates a synergistic relationship with an extensive development community that fosters innovation and provides new and unique solutions for our mutual customers. For more information, please visit www.nortel.com

About Mediatrix Telecom
Mediatrix develops and markets advanced VoIP access devices, gateways, routers, and value-added software enhancements for the enterprise, SOHO, and residential markets. Its products provide an ideal migration path for end users wishing to protect their current CPE investment (analog/digital phones, fax machines, PBX and Key Systems) while migrating to a converged IP network. Mediatrix products and solutions are widely interoperable and have received commercial endorsement from some of the world’s leading manufacturers of telecommunications equipment as well as from large telecommunication carriers. Mediatrix is a wholly owned division of Media5 Corporation, a high technology holding company based in the Montreal area, in Canada. Media5 Corporation also owns M5T, a software provider focused on delivering the latest in SIP software technologies and security solutions to companies developing applications for real-time multimedia communications over IP. Mediatrix has corporate offices in the Sherbrooke area, in Canada and regional offices in the United States, Europe, Latin America and Asia. For more information, please visit www.mediatrix.com.

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