I'm working on the ds 1000 and haveing trouble installing a door box, I have a analog door box, my first question is should i have icm dial tone comming out of the DOOR 1 port (by dfault) on the ds 1000? I checked and ext 324 is programmed as (10) door box, programmed the chime, how do I program the ring group master ext and the ring group, in the manual i'm getting conflicting infomation. There are 6 ext 300-305 should i not put 300 in the ring group? no relay control will be used. Thanks for any help on this!