While you wait for answers, we may have found some information which could help you.
Success
Message
Day Display - How do I alter?
How do I connect my own answering machine?
BT Studio 1500 triple set?
flashing new message light when call has been answered?
binatone shield 6015 twin phone set?
keeps saying out of range?
base 1 again?
how can i fix a bt graphite 1100phone?
information needed?
Fix answer machine number?
How can I get my telephone/answering machine (model 29870ge1-A)to work?
how do i record a telephone conversation on a bt synergi 5500 cordless anse?