Just bought a BT Decor 1200 land line phone. The problem is it always seems to be off hook. If I lift the receiver, there is no sound. So I remove and reinsert the phone plug at the wall socket, which gives me a dial tone. If I phone in from another phone, I get a message prompting me to leave a 1571 phone message. Most disturbing, at odd times of the day and even in the middle of the night the phone gives a distorted "chirp" sound for a couple of seconds. Like someone is faxing a phone line or something. I have broadband and the phone is connected to a filter. My 12-yr old BT phone still works OK, but this brand new phone doesn't seem to be compatible or something.