Every OCS deployment needs the appropriate clients rolled out to the users. There are 3 client programs that almost every OCS solution must have:
Since there has been some upgrades and patches to the RTM versions of these programs, I thought I could provide the latest download links to them.
This program is not free, so first of all you should download it from Microsoft Volume Licensing Services site (assuming you have a volume license agreement).
Next, you should apply the October 2008 hotfix, which will fix some issues (this update is needed in order to interoperate with OCS 2007 R2).