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