A mechanism is disclosed for managing phone calls on phone devices used by the employee of a company. When the user wants to give a call, a new plugin in the phone device interprets an attribute value added by the phone device user to each phone number in order to categorize the call. The cell phone user enters a profile describing his call accounting information. A call management plugin computes a prefix for user personal calls which will be adapted to the user location. The call management plugin at the end of the call tags the call information as a personal call or business call. The phone device sends the tagged call information to a remote server of the company, which consolidates billing information received from the phone operators with the tagged call information.