Two way audio communication over Remotedesktop protocol

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currently there is no support for two way audio redirection in Windows server 2003. So as per the information i have, i have finalized on writing Virtual Channel Plug-in for RDP Extension.
I will have to use Dynamic Virtual Channel, but i have a doubt about how actually transfer the audio data from client to server, when we give input from Microphone at client side. what are the built in functions or what functions can be used to implement the mentioned application


@System level programmer kindly provide me with valid solution.

Audio communication over RDP is the main Case.....!