While you wait for answers, we may have found some information which could help you.
Success
Message
How do i clear the TAM?
How can I mend my BT4600 (1+1) phone?
TAM FULL on Binatone 1420 Single, base holds old messages th?
How can i get my handset to speak with the caller?
Mute?
BT 4600 twin one handset bot ringing?
BT 4600 phone problem?
BT Studio 4500 cordless telephone?
Battery cover?
Bt 4600 phone?
Problem with handsets?
How can I repair my phone?