Microsoft Office Communications Server 2007 R2
Office Communications Server 2007 R2 Online is a cloud communications service that connects from anywhere by using presence, instant messaging, audio/video calling, and rich online meetings with audio, video, and web conferencing.
Move easily from instant messaging into online meetings that use audio, video, and screen sharing with just a few clicks of the mouse.
Conduct online presentations including screen sharing, audio, video, and a virtual whiteboard.
Invite external contacts to easily join online meetings through a native or web-based client.
OCS Saved Conversations
Reply to an email with an instant message or an audio call.