I might well consider replacing the present hodge-podge here with BT Featureline but I cannot find out how closely it would fit our needs. How can I get some advice about that? In outline what I need is a system with several DECT connected phones, any one of which can get access to one of two outside lines and can pick up calls coming in on either outside line, and transfer them internally if needed (and also allow internal extension phone to phone calls to be made).