Opinion: There’s no strong reason to moving to 16 at this point. When you’re ready to migrate, I recommend setting up a new 17 system and restoring a full backup from your existing system.
Thank you Lorne Gaetz. The reason I want to upgrade is that fwconsole reload works from CLI but it does not refresh apply config in web and I don’t have this issue with two other pbxs ( version 16th).If you know any other way for fix the apply config issue, please let me know.