Hi John Apologies if you know this already. Your house should have a master socket which is the one that connects to the outside world. It is possible to take the front off the box and inside there is a test socket. Try plugging a land line phone into this socket and see if it still crackles. If it does, the problem is outside your house. If not you will have to check inside. Pele West ** To leave the list, click on the immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=unsubscribe] ** If this link doesn't work then send a message to: ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, click on the ** immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=faq] ** or send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq