Thank you for replying, question 1) yes I have another phone and it does the same thing. 2) I other phone which is working properly. 3) the landline is with Tiscali. 4) do not understand the question.
5) Amplidect 285
Sorry about the delay. When I answer the phone when it's ringing it's fine, it's only when the answer phone kicks in it starts the screeching.