Difference between eCATT and CBTA

Hi all,

I can't find any information about the difference between eCATT and CBTA. Both are included in SolMan and used for testing. The only difference I have found is that CBTA is working modular. But is CBTA the replacement of eCATT or just an additional tool? Is CBTA an stand alone tool?

I am glad if anybody knows the right answer.

Thanks a lot.