I have 6 incoming lines and need 24 extensions. Voice mail would be great, but not used by most employees. I have 2 buildings that are about 100 feet apart. I would like an auto attendent and the night ringer would be good to. We would eventually like to be able to hook up to our other building which is a mile down the street (when and if we get a new system there). That building has 6 incoming lines and would need at least 24 extensions minimum. thanks so much for all your help