public void getNextCall(Employee e) {
		// TODO Auto-generated method stub
		 for(int rank = e.rank -1 ;rank>=0;rank--)
	        {
	            Queue<Call> cq = callq[rank] ; // for correspondent wtih the same employee level call in queue list
	            Call c = cq.poll() ; // remove the first call ;
	            if (c!=null)
	            {
	                e.ReceiveCall(c);
	                return ;
	            }
	        }
	}