Ok I know this topic has a long history and I have read most of it. My problem is we have one definity 5.2 running multiple clinics with in one hospital, evey outgoing call displays the main hospital number all out going calls go out one trunk group. I have started making the caller id changes on individual extensions however I only have a total 60 spots the site manager will let me fill. I understand that I could do a range to cut down on the spots used for individual exts but--- station 4200 - 4210 need to show one number 4211-4215 a different number and list goes on for almost 700 stations. Can I make each individual clinic a group, and any call coming out of group x displays a number? or does anyone else have an idea that would work better?