Exchange 2010 and OCS 2007 R2 Integration

http://www.networkworld.com/community/node/47348

Proper syntax on OWA server is Get-OwaVirtualDirectory -server SERVERNAME Set-OwaVirtualDirectory -InstantMessagingType 1

OCS Web Access ... create TLS certificate

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/MS_Live_Communications_Server/Q_24034409.html