While you wait for answers, we may have found some information which could help you.
Success
Message
Beeping phone BT Studio 1100?
BT Studio 3500 base problem?
how to repair BT 3500 Studio phone base (Master) unit?
How can i show calls made to my phone?
Bt 3500 cordless tel/answerphone?
how can i fix a bt graphite 1100phone?
telephones?
Permanent engaged tone on BT Studio 1100 handset?
BT Studio 1500 triple set?
How do I connect my own answering machine?
how do i record a telephone conversation on a bt synergi 5500 cordless anse?
bt 1100 twin need to replace broken 2nd handset?