While you wait for answers, we may have found some information which could help you.
Click here for Not Working SaysHow can I get my telephone/answering machine (model 29870ge1-A)to work?
BT Studio 1500 triple set?
base 1 again?
Day Display - How do I alter?
Fix answer machine number?
how do i record a telephone conversation on a bt synergi 5500 cordless anse?