EarthLink Selects Xten's VoIP SIP Softphones EarthLink Free Online Calling users can now place free calls using Xten software SANTA CLARA, CA, Oct. 8 /PRNewswire-FirstCall/ -- Xten (OTCBB: XNWK), a provider of VoIP (Voice over IP) and Video over IP SIP (Session Initiation Protocol) softphones, today announced that EarthLink (NASDAQ:ELNK), one of the nation's leading Internet service providers, has entered into a software licensing agreement with Xten. Under the terms of the agreement, EarthLink has licensed co-branded versions of Xten's X-PRO and X-Lite softphones for use with its new Earthlink Free Online Calling service. Xten has created a co-branded web site which permits EarthLink customers to download, install and use X-Lite, at no charge, to instantly make and receive free VoIP calls from other EarthLink customers and users of other compatible SIP-based VoIP services. The service is available at http://www.earthlink.net/extras/onlinecalling. "By working with Xten, we are able to provide an easy-to-install and feature rich softphone as a part of EarthLink Free Online Calling," said Tom Andrus, vice president of products and services at EarthLink. "Free VoIP calling adds another benefit to the list of features our subscribers enjoy with their high-speed connections." Xten's softphones are carrier-grade IP telephony SIP endpoints, delivering the quality of service and features that large providers require to serve their customer base. Xten has a feature-rich FREE SIP softphone dubbed X-Lite, in addition to the fully featured X-PRO commercial softphone. Xten's softphones are fully RFC3261 (SIP), RTP/RTCP (RFC 1889) and SDP (RFC 3264) compliant. They are available for Windows (Windows 98SE/ME/NT 4/2000/XP/CE), Mac OS X and Pocket PC operating systems. "EarthLink is well positioned to deliver a world-class Voice over IP service," said Erik Lagerway, president and COO of Xten Networks, Inc. "We are happy EarthLink has chosen the Xten SIP softphones for their initial deployment, and we look forward to growing this new partnership." About EarthLink "EarthLink revolves around you(TM)." Celebrating ten years as a leading national Internet service provider (ISP), Atlanta-based EarthLink has earned an award-winning reputation for outstanding customer service and its suite of online products and services. According to the J.D. Power and Associates 2004 Internet Service Provider Residential Customer Satisfaction Study(SM), EarthLink is ranked highest in customer satisfaction among dial up and high-speed Internet Service Providers. Serving over five million subscribers, EarthLink offers what every user should expect from their Internet experience: high-quality connectivity, minimal drop-offs and ISP-generated intrusions, and customizable features. Whether it's dial-up, high-speed, Web hosting, or wireless Internet service, EarthLink provides the tools that best let individuals use and enjoy the Internet on their own terms. Learn more about EarthLink by calling (800) EARTHLINK or visiting EarthLink's Web site at http://www.earthlink.net/. About Xten Networks, Inc. Xten is a developer of award-winning, high-quality, carrier-grade VoIP (Voice over IP) and Video over IP softphones for service providers, cable operators, Internet telephony service providers, IP PBX manufacturers and OEMs. Through its deployments with leading service providers, Xten has more than 400,000 IP endpoints deployed worldwide. For more information please visit http://www.xten.com/. You may also visit Xten COO, Erik Lagerway's blog at http://www.sipthat.com/. For more information, contact: Mark Bruk Justin Siefert Xten Networks, Inc. Calysto Communications 408.876.4344 404.266.2060 x20 DATASOURCE: Xten Networks Inc. CONTACT: Mark Bruk, Xten Networks, Inc., (408) 876-4344, ; Justin Siefert, Calysto Communications, (404) 266-2060 x20,

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