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The Media Server
According to the ISC Application Group’s framework document, the media server provides building blocks for the feature server and application server to use.
Typical building blocks include announcements, interactive voice response (IVR), conferencing (or bridging), play and record, speech recognition, text-to-speech, and facsimile. These building blocks are generic and can be applied, unchanged, to a large variety of services.
A media server’s building blocks are used by application service logic in an application server or softswitch to provide services requiring interaction with the media or bearer path. When an application requires media processing, it instructs the media server and far-end devices to set up connections to each other and then invokes one or more building blocks on the connection(s). When the need for media processing is finished, the application can withdraw the media server from the connection(s).
There is agreement that the media server should not maintain any call state or feature/application logic in the network. It serves instead as a service device, used as needed by network elements that do have the feature or application logic within them.
{{mergeto|Media center}}
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