| Microsoft Office Live Communications Server |
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| CATEGORIES ABOUT MICROSOFT OFFICE LIVE COMMUNICATIONS SERVER | |
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| office live communications server | |
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Microsoft Office Communicator is advertised by Microsoft as the recommended client; however, while Windows Messenger still can be used. With Office Communicator, it is possible to extend the abilities of Live Communications Server to include integration with many corporate telephone systems, and with the Microsoft Office suite. The principal use of Live Communications Server is Instant Messaging within a single network, including Presence Information , application sharing, file transfer and voice and video communication. (These latter features are often not possible even within a single network using public IM clients, due to the effects of negotiating the corporate Firewall and Network Address Translation ). However, Live Communications Server 2005 now includes the ability - " Federation " - to interoperate with other corporate IM networks, either those specified, or any network listing the appropriate SRV Records in the DNS . Microsoft Office Live Communications Server uses the Session Initiation Protocol (SIP) to communicate between server and client. On the server side, Live Communications Server offers the ability to encrypt IM traffic, and to log and archive all message traffic passing through the server, increasingly a legal requirement for many companies. Finally, in the recent Service Pack 1 for Live Communications Server 2005, Microsoft have added the ability for LCS installations to interoperate with the MSN , AOL and Yahoo! IM networks. VERSIONS FOR WINDOWS
LICENSING Microsoft Office Live Communications Server is licensed in the usual manner for Microsoft software; a single license is purchased for the server, which includes a number of Client Access License s. Each user or device accessing the server then requires a Client Access License (CAL), either part of that initial number or purchased separately. In the case of Live Communications Server , this picture is complicated by the existence of:
Any and all of these may be purchased separately. (When Microsoft Office Live Communications Server was originally launched on 29 December 2003, it replaced the Exchange Instant Messenger Service that had been included in Exchange 2000, but which was removed from the Exchange 2003 Feature Set . Thus, holders of Exchange 2000 licenses which include Software Assurance are entitled to receive Live Communications Server as an upgrade, along with Exchange 2003; however, Live Communications Server Client Access License s must be purchased as normal for new users.) COMPETITION Competitors are IBM's Lotus Sametime , Jabber , Cisco's Unified Presence Server and Unified Personal Communicator, Avaya's one-X software and Siemens' OpenScape. Of course the public Instant Messaging networks are widely used by employees. There have been attempts by other vendors at providing solutions such as Yahoo! 's Enterprise Instant Messenger; however these attempts have been largely unsuccessful. There once existed an ICQ corporate client and server, but it is no longer supported or developed. SEE ALSO EXTERNAL LINKS
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