BT (M) to BT (F) and RJ11 (F) White OEM Direct Plug ADSL Micro Filter Adapter

Pictures may not be representative of the product specification and are for illustration purposes only Key Features: An ADSL microfilter is used to separate the phone line connection from the internet connection reducing interference and dropouts or even connection problems. For each telephone or device that uses a phone line, a microfilter must be plugged into that device.