Hello,
A Microsoft Excel spreadsheet that calculates WAN bandwidth requirements for a Lync Server deployment based on administrator-specified user profiles and network information, and a Word document user guide that accompanies the spreadsheet are now available.
You can get the mentioned documents from :
Download Lync 2010 and 2013 Bandwidth Calculator from Official Microsoft Download Center
http://www.microsoft.com/en-us/download/details.aspx?id=19011&WT.mc_id=rss_alldownloads_all
Kindest regards,
João Ribeiro