We may have found other answers which could help you.
Success
Message
BT 4600 twin one handset bot ringing?
TAM FULL on Binatone 1420 Single, base holds old messages th?
Bt 4600 phone?
BT Studio 4500 cordless telephone?
BT 4600 phone problem?
How can I mend my BT4600 (1+1) phone?
Problem with handsets?
How can i get my handset to speak with the caller?
My bt freestyle phone don't ring or con?
How can I repair my phone?
Battery cover?
How do i clear the TAM?