Microsoft® Office Communications Server 2007 R2 Resource Kit

Conferencing Servers

Conferencing Servers, also known as multipoint control units (MCUs), manage the content for Office Communications Server 2007 R2 conferences. Office Communications Server 2007 R2 provides the following MCUs:

• IM Conferencing Server

• Web Conferencing Server

• A/V Conferencing Server

• Telephony Conferencing Server

• Application Sharing Conferencing Server

Each of these server roles communicates directly with clients participating in a conferencing session. Each MCU uses its own protocol, which is optimized for the media it supports. These server roles also synchronize the state of the conference with a process called the focus that runs on the front-end server or Standard Edition Server. The protocol used to control the state of the conference ...