Follow Me Prefix

I use FreePBX 12.0.74 on asterisk 13.6. The documentation says about Follow me:

CID Name Prefix
Optional: Enter a Caller ID (CID) prefix that will be displayed to the internal extensions in your follow-me list.

But i already get the prefix for the initial ring time on the primary extension, which is not part of the follow-me list. I choosed ringallv2 - is that the issue? Anyway, it shouldn’t happen during the initial ring time, should it?