Microsoft Lync Server 2010 communications software delivers streamlined communications including software-powered VoIP, presence, enterprise IM, web conferencing, and A/V conferencing. You can implement these capabilities alongside your existing telephony infrastructure, while retaining rich operational control.
Enjoy installing and experiencing this great new version. Any questions? Please contact me.
General site: http://www.microsoft.com/en-us/lync/default.aspx