I've worked on MANY Partner systems in the past, but this guy is different.

I can't use the 99 box to login like every other one I've seen?
I can only enter using
9991 with a 6 digit default password.

I need to change a couple greetings like th enight service one but can't seem to find where they are hiding.

Naturally the company who installed it 20 year ago is gone with few notes.

Has anyone seen a OLD Partner programmed like this one?.