Modem Cable Lead 3m RJ11 to BT FAX Telephone Phone Plug BT Socket 4 Pin Straight
3m BT to RJ11 Modem Cable. Connections: RJ11 Plug (4pin) - BT Plug (4pin). A 4 pin cable will work where a 2 pin cable is required but 2 pin will not work if your device requires a 4 pin connection. 2 pin, 4 pin, straight wired and cross wired.