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IMS is the key to the merger and extend the VoIP to download

Time:11-10

IMS IP multimedia subsystem, it is a definition of IP network session voice calls and data processing ways of architecture, basically, it is equivalent to control in the traditional circuit switching telephone network infrastructure, but there are some key differences, in its architecture, the service and its lower level of network is completely separated, in this way, the text information, such as voice mail and file sharing service can reside in any location of the application server, and through several wired and wireless service providers to users, that is to say, only need to save each user's personality on a system facilities and access can be realized in other systems users free roaming,
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