Server-Side Application Virtualization
- Office Communicator 2005 supports Terminal Services and Citrix MetaFrame only when Office Communicator is used for text chats and presence functions.
- Office Communicator 2007 supports Terminal Services and Citrix MetaFrame when Office Communicator is used for text chats, presence functions, and Remote Call Control (RCC) functions.
- Office Communicator 2007 R2 supports Terminal Services and Citrix MetaFrame when Office Communicator is used for text chats, presence functions, desktop sharing, and Remote Call Control (RCC) functions.
- Office Live Meeting 2007 supports Terminal Services and Citrix MetaFrame for Web conferencing functions.
Client-Side Application Virtualization
Office Communicator 2007 and Office Communicator 2007 R2 support all native functions. This includes text chats, presence functions, desktop sharing (Office Communicator 2007 R2 only), Remote Call Control (RCC), audio, and video when you use them in Client-Side Application Virtualization mode (Microsoft Application Virtualization for Desktops 4.5).
more info here
