public void PriorityClick()
        {
            switch (_StateManager.Tlf.Priority.State)
            {
            case FunctionState.Idle:
                if (_StateManager.Tlf[TlfState.Congestion] + _StateManager.Tlf[TlfState.Busy] > 0)
                {
                    int id = _StateManager.Tlf.GetFirstInState(TlfState.Congestion, TlfState.Busy);

                    _EngineCmdManager.RetryTlfCall(id);
                    _StateManager.Tlf.Priority.Reset(id);
                }
                else
                {
                    _StateManager.Tlf.Priority.Reset(-1);
                }
                break;

            case FunctionState.Ready:
            case FunctionState.Executing:
            case FunctionState.Error:
                _StateManager.Tlf.Priority.Reset();
                break;
            }
        }