While you wait for answers, we may have found some information which could help you.
Click here for Require Users Manualkeeps saying out of range?
flashing new message light when call has been answered?
How do I connect my own answering machine?
how can i fix a bt graphite 1100phone?
BT Studio 1500 triple set?
how do i record a telephone conversation on a bt synergi 5500 cordless anse?