Following constants are available:

Constant	Value	Description
LINECALLPRIVILEGE_NONE	0x00000001	The application has no privileges to the call. The application’s handle is void and should not be used.
LINECALLPRIVILEGE_MONITOR	0x00000002	The application has monitor privileges to the call. These privileges allow the application to monitor state changes and query information and status about the call.
LINECALLPRIVILEGE_OWNER	0x00000004	The application has owner privileges to the call. These privileges allow the application to manipulate the call in ways that affect the state of the call.