While you wait for answers, we may have found some information which could help you.
Click here for Bt Freelance Xd 1500how to repair BT 3500 Studio phone base (Master) unit?
bt 1100 twin need to replace broken 2nd handset?
Beeping phone BT Studio 1100?
how do i record a telephone conversation on a bt synergi 5500 cordless anse?
BT Studio 1500 triple set?
how can i fix a bt graphite 1100phone?