Rdusel,
You, need to know that you cant program just any extension to this dss console. you can only program extensions x00 to x99 in a 3 digit dial plan or xx00 to xx99 but only 50 @ a time unless you have 2 dss consoles. The 2nd set of buttons @ the bottom of the the console, top row from left to right button 1 is your 1st shift button 2 is your 2nd shift and button 3 is your 3rd shift. there are no more shifts, most of the other buttons down there never get used and are not even operational.
The next thing you will have to do is get into system programming on the 2nd page of the main menu, under labling go to the 2nd page of labling and hit DSS, then hit button 1 2 or 3 for which one you want to put the leading extension, for example the uppermost left hand button would be ext 100 if I entered under button 1: 100 that would mean when you are on "Shift 1" you would have extensions 100 through 149 then do button 2: 150 so you would have extensions 150 through 199 same with button 3...etc... you will only be able to monitor 150 stations unless you tie two DSS fields together, I think that would give you 300, but I've never done that before, I've only seen them tied together. Hoped I helped and not confused you to bad....
Charles