Microsoft Communicator "14" is the primary client software for Communications Server 2010. Features include presence, contact management, instant messaging (IM), telephony, and greatly enhanced online conferencing.

Communicator "14" is the default client for server-based online meetings and web conferences.

In addition, the manager/delegate scenario requires that both manager and delegate have Communicator "14" installed. Microsoft Communications Server 2010 Attendant now supports the receptionist scenario only.

Microsoft Communicator “14” Attendee is a rich conferencing client that allows users without Communicator "14" installed to fully participate in Communications Server 2010 online meetings. Communicator “14” Attendee can be installed on a per-user basis, so you can choose to selectively deploy this client during migration, or allow users to download and install it as needed. See [XREF] for details.

For more information about how to control the conferencing client choices that appear on the online meeting join page, see [XREF].

Microsoft Communicator Web App is a web-based conferencing client that supports most Communicator "14" collaboration and sharing features, as well as presenter meeting controls and dial-in and dial-out voice conferencing.

For users who do not have Communicator "14" installed, you can offer this conferencing option when it isn’t practical or possible to install Communicator “14” Attendee. For details, see [XREF].

For more information about how to control which client options appear on the online meeting join page, see [XREF].

Communications Server 2010 Attendant is an integrated call management application that enables a receptionist to manage multiple conversations at once through rapid call handling, IM, and on-screen routing.

Communications Server 2010 Attendant no longer supports the manager/delegate scenario. Both manager and delegate must have Communicator "14" installed to access these features.

Microsoft Communicator Mobile for Windows Mobile provides IM, enhanced presence, and telephony for users in your organization who are connecting from a smartphone or Windows Professional mobile device. For details, [XREF].

Microsoft Communicator “14” Phone Edition is software that runs on intelligent Internet Protocol (IP) phones (for example, USB-attached phones), and supports placing and receiving calls, enhanced presence, and client audio capabilities for web conferences.

The Online Meeting Add-in for Microsoft Outlook supports online meeting management from within Outlook. This software is installed automatically with Communicator "14".