AG Communication Systems, a subsidiary of Lucent Technologies, offers service providers advanced network-based solutions, including circuit and packet switching, voice-over-Internet protocol (VoIP) and IP Centrex, call center and integrated access products. The Phoenix-based company develops end-user applications that maximize revenue opportunities for service providers. AG Communication Systems also provides a full range of enhanced services, including installation, engineering, consulting, project management and technical support, to help customers manage their networks from beginning to end. For more information, please visit www.agcs.com.

General Bandwidth Inc. is a TL 9000 certified, leading developer of telecommunications equipment that is central to the build-out of the new voice infrastructure. General Bandwidth is focused exclusively on developing solutions that meet or exceed the stringent requirements of large and small carriers. General Bandwidth's flagship G6® Packet Telephony Migration Platform enables service providers to deploy voice over broadband technologies to cost effectively deliver voice services over their existing broadband infrastructure (DSL/T1, Fiber, HFC, Wireless), to better utilize their existing resources by efficiently aggregating access network traffic, and to provide a migration path to end-to-end packet networks. For more information, please visit www.genband.com.

MetaSwitch is an industry-leading vendor of IP Multimedia Subsystem(IMS) switching and applications solutions for both packet and circuit-switched networks. Its widely deployed call agent, media/signaling gateway and application server platform supports a full range of legacy Class 4/5 capabilities and hosted unified communications services, and scales from a few hundred to millions of subscribers in both integrated and distributed configurations. Customers include incumbent and competitive local exchange carriers, as well as operators of broadband wireless, cable and fiber networks. MetaSwitch is a division of established telecom technology provider Data Connection. The company is consistently profitable and privately held, with main US offices in California and Virginia, and European headquarters in London, UK. For more information, please see: www.metaswitch.com.

Founded in 1995, Net2Phone is a leading provider of retail VoIP services globally, comprised of two wholly owned subsidiaries. Net2Phone Global Services ("NGS") provides consumers and small businesses globally with bundled voice and enhanced services either directly or via partners. Net2Phone Cable Telephony ("NCT") provides cable operators with a turn-key solution to deliver residential phone service to their subscribers. While the opportunities for each unit differ, each division relies on quality partners for distribution and each utilizes a centralized platform to deliver retail services at a low incremental cost. Traded on the NASDAQ under the symbol NTOP, Net2Phone's strategic partners and investors include Liberty Media Corporation (NYSE: L; LMC.B) and IDT Corporation (NYSE: IDT; IDT.C). For more information about Net2Phone's products and services, please visit www.net2phone.com.

Nuera Communications, Inc. is a leading provider of Voice-over-Internet Protocol (VoIP) infrastructure solutions that work over any medium (cable, wireless, copper and fiber). The company's Open, Reliable Communications Architecture (ORCA®) product portfolio helps carriers worldwide migrate from legacy networks to next-generation VoIP networks. Nuera continually wins awards for its superior products and services and drives the industry towards the adoption of interoperability and open, standards-based platforms. For more information, please visit www.nuera.com.

Rapid5 Networks is a dynamic, high-energy telecommunications equipment company tackling a critical growth segment of the telecom/Internet infrastructure market. Rapid5 is creating highly scalable, carrier-grade convergence platform products to offload, augment, and ultimately replace the circuit-switched telephone network. Rapid5 maintains corporate offices in both Silicon Valley and Richardson’s Telecom Corridor, reflecting its commitment to blending the best of the Internet and telephony worlds. For more information, visit www.rapid5.com.

Sonus Networks, Inc., is a leading provider of packet voice infrastructure products for the new public network. With its Open Services Architecture (OSA), Sonus delivers end-to-end solutions addressing a full range of carrier applications, including trunking, residential access and Centrex, tandem switching, and IP voice termination, as well as enhanced services. Sonus' award-winning voice infrastructure solutions, including media gateways, softswitches and network management systems, are deployed in service provider networks worldwide. Sonus, founded in 1997, is headquartered in Westford, Massachusetts. Additional information on Sonus is available at www.sonusnet.com.

Sylantro Systems provides the premier software platform for advanced IP Centrex and hosted communications services for business, residential, wireless and other applications. With a unique combination of advanced applications, a carrier-class platform, and proven go-to-market services, Sylantro allows service providers to rapidly deliver high-value, high-margin fully integrated hosted telephony solutions. These award-winning solutions offer business users sophisticated communications services without the cost and complexity of today's in-house PBX and key systems, and give consumers new flexibility in their communications services. Additional information on Sylantro Systems' solutions is available at www.sylantro.com.

Telcordia Technologies, Inc., an SAIC company, is the world's largest provider of operations support systems, network software and consulting and engineering services to the telecommunications industry. A leader in the development of Next Generation Network technologies, Telcordia (www.telcordia.com) is headquartered in Morristown, New Jersey with offices throughout the United States, Canada, Europe, Central and South America.