Allegro Systems, Inc.: Prior to its acquisition on September 24, 2001 by Cisco Systems, Inc., Allegro Systems was a networking firm specializing in designing and producing secure network solutions for the enterprise networking market.

EmpowerTel Networks, Inc.: (www.empowertel.com) "convergence" communications processor is designed to power the new generation of multi-service platforms. The company's patent-pending TDMoIP technology transparently bridges legacy networks to lower cost and more efficient next generation packet networks enabling new and incumbent service providers to deploy new, revenue-enhancing services without impacting their investment in legacy infrastructure. On July 23, 2002, IP Unity Inc., provider of a carrier grade services platform for enhanced voice and telephony applications, announced its intent to acquire empowerTel.