Office Communications Server 2007 manages all real-time (synchronous) communications including: instant messaging, VoIP, audio and video conferencing. It works with existing tele-communications systems, so business can deploy advanced VoIP and conferencing without tearing out their legacy phone networks.

Microsoft Office Communications Server 2007 also powers presence, a key benefit of Microsoft unified communications that unites all the contact information stored in Active Directory with the ways people communicate.

With presence, you can see at-a-glance if someone is available and contact them with a click using instant messaging, a phone call or a video conference.