Disclosed is a method and a system for a Push-To-Talk (PTT) over Cellular (PoC) session open between PoC clients supporting various types of media. Although a PoC client providing an Open Mobile Alliance (OMA) PoC multimedia communication service supports a plurality of uncommon types of media, it is possible to open a session according to media types in an independent and easier manner. Also, when a new media type is supported by a new participant during a session, it is possible to add the new media type when granting the next floor. In addition, it is possible to selectively transmit media according to media types based on the PoC user's choice.

 
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< Methods and systems for sharing multimedia application data by a plurality of communication devices

< Multimedia user interface

> Service control framework for seamless transfer of a multimedia conference over different media

> Method for real-time broadcasting of multimedia files during a video conference, without interrupting communication, and a man-machine interface therefor

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