The application represents three users, referred to in this description as A, B, and C. User B places audio calls to users A and C. After the calls complete successfully, user B performs a supervised transfer so that user A and user C are connected. Like unattended or attended transfers, after a supervised transfer, the old calls are disconnected. That is, the B-to-A call and the B-to-C call are disconnected.

The application prints log results to the console, and then exits, shutting down the platform normally.

The application runs without user intervention.

• Call transfer, and established call activities
  
  
• Basic call placement
  
  
• Basic incoming audio/video call use
  
  
• AudioVideoFlowhandling and control
  
  

• Microsoft Office Communications Server 2007 R2.
  
  
• Three users capable of sending and receiving audio calls.
  
  
• The credentials for each user, and a client capable of signing in to Office Communications Server.
  
  
• A client signed in to Office Communications Server.
  
  

1. Replace the credentials in the variables at the beginning of the code sample with the credentials and server of the users from your Office Communications Server topology.
   
   
2. Substitute the address of the called user in the code sample with the address of a valid, currently signed-in user capable of receiving audio calls.
   
   
3. Open the project in Microsoft Visual Studio, and then press F5.