After you restart Microsoft Office Communicator 2007 R2 or restart Microsoft Office Communicator 2007, the last dialed telephone number of a contact is set to Communicator Call. This occurs even if another telephone number for this contact was dialed in the last Communicator session.
Additionally, you have to manually select one of the other available telephone numbers for that contact because Communicator Call is not available.
This issue occurs because Communicator cannot keep the default telephone number, which is the last dialed telephone number, for the contact when the
registry entry is set to 4.
Note If the
registry entry is set to 4, no Communicator calls are enabled. This registry entry is located under the following registry subkey: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Communicator
To resolve this problem, install one of the following update packages depending on the version of Communicator that you use:
2028888 Description of the cumulative update package for Communicator 2007 R2: July 2010
2028885 Description of the cumulative update package for Communicator 2007: July 2010
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.