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MobileSpring is a leader in interconnectivity solutions in the wireless messaging marketplace. MobileSpring's messaging solutions link carriers, IM providers and others - in a seamless technological and operating environment. This environment offers all parties the opportunity to realize the full revenue potential presented by mobile messaging. The company's first product, Metcalf Global Messaging, is the market leading inter-carrier messaging (ICM) solution, having been selected and deployed exclusively by over 35 US carriers including Cingular Wireless, Sprint PCS, Virgin Mobile, and US Cellular. Metcalf has enabled carriers to dramatically increase their mobile messaging revenues by providing interoperability between incompatible network architectures (e.g., GSM, CDMA, TDMA). This interoperability enables a carrier's subscribers to exchange text messages with subscribers on other networks by simply addressing messages to recipients' mobile phone numbers. Building on Metcalf's marketplace success, MobileSpring is extending messaging interoperability to include integration with third-party applications, including web-based and enterprise-based Instant Messaging (IM) systems. MobileSpring's success is based on the collective experience of the management and development teams. MobileSpring's people have been successful players in all aspects of the wireless industry - from deploying new services and technologies at wireless carriers to developing carrier-grade software systems at leading technology companies. A dynamic strategic partnership with Illuminet (now the Telecom Services division of VeriSign, VTS) augments the team's experience. MobileSpring and VTS jointly offer carriers the Metcalf solution, enabling MobileSpring to deploy its services to carriers within the framework of the leading and most trusted operational environment. In late 2001, the partnership was further strengthened with VeriSign taking a seat on MobileSpring's board of directors.