System.out.println("RXTXPort:isReceiveThresholdEnable()");
System.out.println(System.currentTimeMillis() + ": " + "RXTXPort:isReceiveThresholdEnable()");
	public boolean isReceiveThresholdEnabled()	{		if (debug)			System.out.println("RXTXPort:isReceiveThresholdEnable()");		return(threshold>0);	}