I am not familiar with QCOMconfigtool, but as I understand it from a couple of you tube video's, its designed to get New Zealand based games going.
The way the New Zealand machines work, is that you use a tool to configure the machine, then once configured they will run standalone like a NSW game. In other jurisdictions, the machine needs to be set up via a host, then it needs to be polled continuously after that. If the machine is not polled in a certain time frame (I think 5 seconds) then it locks up with a comms timeout which is shown on the screen as "Play Disabled TD".