While you wait for answers, we may have found some information which could help you.
Click here for Delete Cordless PhoneHow can I get my telephone/answering machine (model 29870ge1-A)to work?
BT Studio 1500 triple set?
Fix answer machine number?
Day Display - How do I alter?
How do I connect my own answering machine?
flashing new message light when call has been answered?