Users, especially enterprise users have more requirements for services along with the fast development of communication technologies and the enterprises ' communication infrastructure construction. Unified communications service provides a solution for the convergence of voice, data, and multimedia. It allows users to enjoy various communication services anytime and anywhere flexibly. A superior unified communications service platform has VoIP communication, status presence and Instant Messaging (IM) service capabilities, and supports a lot of services. Meanwhile, the unified communications service platform provides open service interfaces for the seamless convergence with enterprise infrastructure.
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