I have the kx-td816 connected with 5 Panasonic KX-T7431 phones. The 5 KX-T7431 are setup as ext 101, 102, 103, 104, and 105. I have the cordless (PANASONIC 5.8 GHz Cordless Telephone KX-TG5050W) connected to one of the KX-T7431 (ext 101) XDP port and setup as ext 201.

The problem I am having is that when I am using the cordless phone, I hear this background radio playing when I’m on dial tone or talking to someone on the phone. I’m not even sure what radio station it is playing. I do not have music on hold connected to the system. I am sure the cordless phone is NOT defective because I ONLY have this problem when the cordless is connected to any one of the KX-T7431 phones on the XDP port. The cordless phone works perfectly fine when connected directly to a phone jack that is not part of the kx-td 816 system. Please advise. Thank you for your time.