Sounds like a greeting you're not expecting is kicking in for the operator call handler - the first thing to do is activate the alternate greeting and set it up the way you want and then test the call - this way you know which greeting is being used no matter what (since the alternate over rides all the other greetings in all cases). If THAT is still behaving this way then make sure you don't have something like the "repeat greeting" option turned on at the bottom of the greetings page - folks miss this sometimes when someone has set it up - this means the greeting (the system generated greeting for the operator will sound as you describe) will play that many times before the after greeting action is acted on.
if you still are having problems we'd want to take a look at what's going on in the Port Status Monitor - you can download the latest version here:
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.