The old versions like CUBAC, CUDAC, CUEAC only go as far as 9.x, there was no standard option.
10.x+ collapsed all into the Advanced and Standard option only.
In 10.x in short, all previous 9.x versions turned into CUACA, and CUACS is the new option, which is serverless.
I'd suggest you review the data sheet and install/configuration guide as they have all the details of the features, and then come if you have specific questions.
HTH
java
if this helps, please rate