I have an 1140 I'm trying to add some lines too. First, I can't hit the "shift" key and get to the second "layer" of keys (6-11)? Secondly, I try and program a DN on key 6, but it gives me SCH0378 and SCH0360, telling me "DN already has max number (30) stations attached" and "Wrong number of input fields for prompt key". I do have an add on module with (14) hot dials and a DN on it. I have (6) DN's programmed on the first screen of the actual phone, which still is only (21)DN's total. Why can't I hit "shift" and get to the second screen, and why is it telling me I've reached my max DN's when I haven't reached 30 yet? Could it be the set has old firmware? Any help would be greatly appreciated, thank you!