In Office Communications Server 2007 R2, you can perform the following actions on an individual unassigned application Contact object:
Delete contacts. Use the Delete Contacts Wizard to delete the selected application Contact object from the forest.
These actions can also be applied to all unassigned application Contact objects in the forest when you perform these actions on the Unassigned Application Contacts node in the console tree instead.
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Office Communications Server 2007 R2 creates an application Contact object for the Conferencing Attendant application and the Conferencing Announcement Service application during activation. Office Communications Server 2007 R2 also creates a new application Contact object for each newly configured Conferencing Attendant conference access phone number.
For details about unified communications applications, see the Office Communications Server Technical Library.