I'm trying to catch a exception type com.cisco.voicebrowser. But I don't know how can I catch it.
Unfortunately, there's no documentation on this sort of thing. You have to figure it out on your own.
If you are not willing to put in the work to figure it out, then I suggest you use the WFExecutionException, as it catches everything.
And by "figure it out" I mean, go through every single exception in the list until you find the one(s) that catch it.