I have just revisited this issue and still cannot seem to get our internal extensions to not show up on when you press DIR on a phone. I have set 20-13-51 to unchecked for all classes of service.

I disconnected via PC Pro and still I see the internal extensions. I am planning to do a reboot tonight, but was wondering if anyone else out there can confirm this behavior and if anyone knows of another way to prevent items from appearing in the directory.

Thanks!!