http://blogs.technet.com/b/hot/archive/2013/01/11/microsoft-lync-2010-phone-edition-dec-cu-update-was-released.aspxHi Everyone, Microsoft Lync 2010 Phone Edition Dec CU has been released! Please find the detail information below. 2737911 Description of the cumulative update for Lync Phone Edition for Polycom CX500, Polycom CX600, and Polycom CX3000 telephonesen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/hot/archive/2013/01/11/microsoft-lync-2010-phone-edition-dec-cu-update-was-released.aspx#3546241Wed, 16 Jan 2013 13:02:58 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3546241Waqas M<p>Hope it solves problems</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3546241" width="1" height="1">