Mailvision core competitive advantage is to provide end-to-end IP network SIP solution, including: terminal (client - audio and video), SIP proxy server (Proxyserver) SIPB2BUA application servers, and all kinds of applications based on SIP (IP telephone conference, call back, the phone records, voice mail), Mailvision is the most important ability for a third party call Control (3 PCC - ThirdPartyCall Control) of IP applications to provide solutions,
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