IBM® Lotus® Sametime® Entry is the entry-level offering of Lotus Sametime that helps organizations get started with instant messaging. With Lotus Sametime Entry, organizations can provide presence and instant messaging support in the Lotus Sametime Connect desktop client or in a Sametime-enabled Microsoft® Outlook client. The full offering of Lotus Sametime, IBM Lotus Sametime Standard, provides Web conferencing, as well as more features in the Lotus Sametime Connect client, such as integrated VoIP, point-to-point video, mobile clients, a gateway for federation with external chat communities and supported public IM networks, and additional features such as geographic location, screen capture, and the ability to transfer file. The IBM Lotus Sametime Connect and Microsoft Outlook clients interact with the Community Services on the Sametime server to access presence (who is logged in) and instant messaging functionality. Community Services supports all the presence and instant messaging capabilities of Sametime. Lotus Sametime Entry installs on a Domino® server and uses the HTTP Services, Domino Web Application Services, and Domino directory provided with the Domino server. Lotus Sametime Entry can be configured to operate as a client to a Lightweight Directory Access Protocol (LDAP) server containing an LDAP directory. You can use an LDAP directory as your community user repository if LDAP directories are used in your environment. Managing the directory, ensuring that Sametime clients can connect to the Sametime server, configuring the Sametime services, and monitoring the server are some of the primary administrative tasks associated with the Sametime server. Lotus Sametime Entry also provides an administrative tools interface that assists the administrator in managing the server. Lotus Sametime Entry also supports the concept of Community Services clustering. A Community Services cluster consists of multiple Sametime servers that are configured to operate together to support server failover and user load balancing for large user populations.