Office Communications Server 2007 synchronizes the address book once every day. This is ok for normal operations, but in tests and troubleshooting scenarios, this can be a bit annoying.
To work around this problem, you can create a simple .bat file to do a manual synchronization of the address book, to update the details of the users from Active Directory.
After synchronization, you still need to log off the Office Communicator client, and log back on to get the client to download the updated address book.
Create a .bat file (absync.bat)
Put the following command in the file (update the path, if you haven’t used the default)
“C:Program FilesMicrosoft Office Communications Server 2007ServerCoreabserver.exe” -syncnow
Let me know if you have any problems.