I've got a site with a Partner ACS R7 that has two sides of an office sharing one system (let's go with "A" side and "B" side). The site would like for specific phones on the "B" side to not ring on incoming calls, but when I go into Centralized Programming and try to pull up the specific extension, I get a loud beep and the system won't let me enter in the extension. In fact, it won't let me enter in any of the extensions that belong to the "B" side. I can program all of the "B" side extensions in System Programming, it just appears that I can't program them in Centralized Programming. What's that all about?