BT Studio 4500 cordless telephone?
How do I connect my own answering machine?
how do i record a telephone conversation on a bt synergi 5500 cordless anse?
How can I fix my BT 4500 Cordless phone?
I have a BT Freelance XB2500 - Quad?
How can I mend my BT4600 (1+1) phone?