Ok I was working on a new site where it need the call feature disabled. I had Local features disabled and on the server side I Enabled SCA on the extension. Weirdly enough DND was still working. I disabled DND on the phone and it fixed the issue. Not exactly the behavior I was expecting but nothing to worry about.
Then I saw that even though it was properly disabled the phone would still display the DND warning as if it had worked. Seems like a minor bug where it doesn’t check weither the command was successful or not because I can call the extension just fine.