Ottawa, ON, May 16, 2007

De-Fi Mobile Selects Atreus Multi-Service Activation Solution To Enable
Self-Provisioning of its IP Mobile Carrier Platform

De-Fi’s 'Straight Talk' Service Empowers Consumers with Auto Provisioning, Self-Care and à-la-Carte Selection of Advanced Calling Features

Ottawa, ON — March 11, 2008 - Atreus Systems™, the leading supplier of provisioning solutions for converged IP services, announced today that De-Fi Mobile Ltd. has selected Atreus’ Multi-Service Activation solution to automate the delivery of media-rich, advanced IP features and global voice services to mobile users.

De-Fi Mobile's new Straight Talk service uniquely bridges the traditional gaps between carrier networks, handset manufacturers and mobile application providers, providing high quality mobile services with predictable and affordable pricing. Leveraging Atreus’ automated activation software, Straight Talk empowers users with automated over-the-air provisioning and personalized command control of their calling features.

The De-Fi Mobile carrier grade IP Network provides a consistent call experience across the IP domain and Circuit Switch domain, allowing WiFi-enabled mobile phones to access the SIP-based network. Through peering and interconnect agreements with over 220 carriers, cable and DSL providers globally, the De-Fi Mobile network combines carrier-grade architecture and next-generation mobile technology to deliver a seamless, feature-rich user experience.

“De-Fi’s IP Mobile Carrier infrastructure delivers a superior alternative for media-rich, bandwidth intensive, real-time mobile applications and services,” said Jeffrey P. Rice, De-Fi Mobile chief executive officer. “Wherever WiFi is available, De-Fi's users have the freedom to choose, the right to roam and the power to save significantly on advanced voice services. Leveraging Atreus technology, we provide customers seamless provisions of their mobile devices while giving our network operations the ability to efficiently handle customer provisioning and management.”

“De-Fi is highly regarded for its advanced IP Mobile Carrier platform for voice communications and is committed to delivering innovative mobile applications with an improved user-experience,” said Andrea Baptiste, president and CEO, Atreus Systems. “There is a strong need for a provisioning platform that can help operators take advantage of services from diverse sources and blend them together flexibly to meet the changing needs of an increasingly sophisticated market. We are pleased to be working with De-Fi to bring a higher quality, more productive self-care experience to their customers.”

About De-Fi Mobile Ltd.
Founded in 2006, De-Fi Mobile Ltd. is a mobile communications company that provides an IP platform for mobile applications and services. Combining its carrier grade architecture with next generation mobile technology, De-Fi delivers a seamless and feature rich mobile experience to worldwide users of mobile devices. Visit De-Fi Mobile at www.defimobile.com

About Atreus Systems
Atreus Systems™ is the leading supplier of provisioning software for VoIP and IMS-based services. As the vendor of choice for the world’s most successful providers, Atreus has provided advanced activation solutions for KPN, Qwest, Telus, Centennial, Spirit Telecom, and Bell Aliant. Atreus has formed strategic partnerships with Alcatel-Lucent, BroadSoft, Ericsson, Level 3, Oracle and Sonus, delivering carrier-class service provisioning with customer self-management. For more information, visit atreus-systems.com.