Enables users of Microsoft Office Communicator to control their desk phone or UC phone. This policy is disabled by default. ...

Enables users of Microsoft Office Communicator to control their desk phone or UC phone.  This policy is disabled by default.  When this policy is disabled, users will not be able to control their desk phone from Communicator. The phone mode icon in the toolbar and all entry points from the top level menus of a conversation menu will be hidden from the user. In the contact list, users may still be able to select phone numbers if PC to Phone is configured and running on the server. In the options dialog all options related to phone control will be disabled.  When this policy is enabled, all of the above mentioned entry points in the user interface are enabled, and the user will be able to control their desk phone or UC phone from Communicator.