Right now my Prostar 816 Plus automatically picks up CO line 3 (for whatever reason) whenever I lift handset. Is there a way to lift a handset and not have any lines picked up?

I would like to be able to pickup handset and then make a decision on my own whether to dial outside line or extension.

If that is not possible, is there at least a way to make default Co line that is chose be line one instead of line 3?

Thanks,
Predrag