Welcome Dale! I'm not entirely sure what you mean.
The transition is the point at which you enter the STAR or exit a DP. There is no audible for this in itself.
If you need to deviate from the STAR/DP, you need to make a request.
You: "Delta 241 with request."
ATC: "Delta 241, go ahead."
You: "Delta 241 requesting direct SUMMA." or whatever deviation you need
ATC: "Delta 241 proceed as requested." or "Delta 241 approved." or "Delta 241 request denied."
If denied, ATC may suggest an alternative.
If you can give the reason for your deviation, give it when you make your request. If it is reasonable it is more likely to be approved.
Ultimately, the safety of your aircraft lies on the pilot, so if you need to take immediate action to avoid weather or another aircraft you may do so without permission, but inform ATC as soon as possible and state your reason.
Does that answer your question?