Hi,
I create separate device profiles and use variables. I create 1 line, 2 line, 3 line, etc... also, create separate directories for the Mac.cfg files that contain separate entires that have speed dials. All of my phones use provisioning. I never program them from the web interface of the phone. When I get a chance, I’ll see if I can send you some info. Currently working at home like a bunch of us due to pandemic, but when I get chance I’ll send you some info.
I’m not saying it’s perfect, but it works.
Thats a nice couple of posts there gKing showing what to do with Polycom phones. Did anyone ever get this working on Yealink phones for BLF key to show RED light when another extensions activates DND