Call state

enum CallState {
   CallState_Inbound,
   CallState_Outbound,
   CallState_Connected,
   CallState_Conferenced,
   CallState_LocalHeld,
   CallState_RemoteHeld,
   CallState_Transferring,
   CallState_Free,
};

enum CallState {
   CallState_Inbound,
   CallState_Outbound,
   CallState_Connected,
   CallState_Conferenced,
   CallState_LocalHeld,
   CallState_RemoteHeld,
   CallState_Transferring,
   CallState_Free,
};