Innovative VoIP Provider UbiFone Signs OEM Partnership with Xten Networks SANTA CLARA, CA, May 10 /PRNewswire-FirstCall/ -- Xten Networks, Inc. (OTCBB: XNWK), a provider of VoIP (Voice over Internet Protocol), Video over IP, Instant Messaging (IM), and Presence SIP softphones, today announced that UbiFone, innovative entrepreneurs and visionaries providing state of the art communications solutions through the latest in Public Switched Telephone Network (PSTN) and Voice over Internet Protocol (VoIP) technology, have licensed a co-branded version of Xten's X-Lite VoIP softphone for use within their Broadband Telephony network. "Xten is happy to have UbiFone as a customer," said Erik Lagerway, COO and President of Xten. "We look forward to the growth of a healthy business relationship." UbiFone's Co-founder, Carlos H Oestby commented, "Xten delivers a robust quality of service and feature-set that are required to serve our customer members. We are impressed by the high performance of Xten's technology and are delighted to be working with one the world's leading softphone providers. By fully integrating Xten's X-Lite softphone within our own back end VoIP solutions and at the same time providing our customer members the option to upgrade to one of the other Xten softphones, be it for a PDA or an enhanced video/IP PSTN conferencing softphone, we have expanded the VoIP deployment options for all our customer members." Xten's softphones are software applications, which run on devices such as personal computers (PCs) or personal digital assistants (PDAs) or can be easily integrated into web pages or web applications. When an Xten softphone is connected to a service provider's network, the user can make and receive calls to and from other "on-net" callers (IP-to-IP) and/or "off-net" callers (IP-to-PSTN/Cellular) with the same quality of service they would expect from their IP handset, at a fraction of the cost, while providing more features and functionality than the IP handset. About UbiFone UbiFone is the trading name of a solid, debt free 13 year old marketing company by the name of Horizon Marketing Associates Ltd, USA, with customer members in over 100 countries. The company provides multi-lingual, cutting edge, state of the art communications solutions that enable its members to save money, and if they so desire, make money by marketing its solutions globally. UbiFone's cutting edge communications solutions are changing the way the world communicates. UbiFone provides state of the art solutions that can be utilized from multiple devices such as PC'S, IP Phone's, Cellular/Mobile's, Fixed Landline phones and PDA'S. The company's concept of One World - One Community - One Number is fast catching up with the World Wide Webbers. About Xten Networks Xten Networks is a developer of award-winning, high-quality, carrier- grade VoIP (Voice over IP) and Video over IP SIP softphones for service providers, cable operators, Internet telephony service providers, IP PBX manufacturers and OEMs. Xten's SIP softphones are available either pre- configured or as a software development kit (SDK), and provide VoIP (Voice over IP), Video over IP, IM (Instant Messaging), and Presence functionality. eyeBeam - Xten's feature-rich SIP Video over IP softphone with IM and Presence - recently received both Communications Solutions(R) Magazine's and INTERNET TELEPHONY Magazine's "Product of the Year" Award for 2004. Through deployments with leading service providers, Xten has more than 1,200,000 IP endpoints deployed worldwide. For more information please visit http://www.xten.com/. For more information on Xten, please contact Investor Relations - KCSA Worldwide: Todd Fromer +1.212.896.1215 Michael Cimini +1.212.896.1233 For more information on Xten products, please contact Media Relations: Tiffany Zinck +1.214.550.6404 DATASOURCE: Xten Networks Inc. CONTACT: Investor Relations - KCSA Worldwide: Todd Fromer, (212) 896-1215, ; Michael Cimini, (212) 896-1233, ; For more information on Xten products, please contact Media Relations: Tiffany Zinck, (214) 550-6404,

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