Exchange 2010 Web service provider

Hi,

Finally we have the OCS presence integration within exchange 2010 using the outlook webapp interface. To get this working, you would have to obviously have OCS deployed because this leverages off the OCS API. So, how to get it working?
First of all, you have to download the bits here:
http://www.microsoft.com/downloads/details.aspx?familyid=CA107AB1-63C8-4C6A-816D-17961393D2B8&displaylang=en

Install this service on the Exchange CAS server. You have to download a hotfix for UcmaRedist.msi if you are running Windows 2008 R2. See
http://www.microsoft.com/downloads/details.aspx?FamilyID=B3B02475-150C-41FA-844A-C10A517040F4&displaylang=en

Make sure you deploy this in the correct sequence and that you make the appropriate changes for the certificate requirements. Once all is installed use the get presence command
(Get-OwaVirtualDirectory –server ).Identity Set-OwaVirtualDirectory –InstantMessagingType OCS.
Restart IIS and make sure this is allowed through the firewall.