Microsoft Office Communicator 2007 is a unified communications client that helps people be more productive by enabling them to communicate easily with others using a range of communication options, including instant messaging (IM), voice, and video. Microsoft Office Communicator 2007 introduces a wide range of new features, most notably enhanced presence and enterprise voice capabilities, enabling users to place computer-to-computer calls and to place outbound calls to, and accept incoming calls from, traditional (PBX/PSTN) phone users.

Microsoft Office Communicator 2007 also introduces robust call-forwarding features, support for USB audio devices, automatic setup of audio and video devices, and the ability to add Active Directory Domain Services distribution groups to your Communicator Contact List. This version is the first release on CNET Download.com.