Andy, you don't need a BT shop for filters. Maplin have them, and I think Dicksons have them. I think Maplin are the cheaper, though. They do say that you need one filter for each phone, answering machine or whatever in your house but I've plugged a double phone socket into the filter and then plugged my phone and caller ID into that, then I've got another filter for the A D S L modem. It works just fine. Cheers, Sandra. ** To leave the list, send a message to:- ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq