Installation: For wall mounted phones, the cable is in the form of a plate hung on the standard wall mount, on which the phone hangs in turn. Note:The RJ45 Cable cannot insert to RJ11 Wall mount. Allow you use one end of cable(RJ11,6P4C) to connect the ADSL Splitter , so that can be installed between analog devices(such as telephones or analog modems) and a plain old telephone service (POTS) line.with their existing telephone (POTS) device,Also can be used for fax machines, answering machines. QUALITY ASSURANCE – The telephone cables coming into house and inside wall panel are Ethernet, but the wall jacks are standard phone cables. To use DSL service,needed to convert the incoming signal from Ethernet down to a telephone jack. CONNECTORS TYPE - 6RJ11 6P4C to RJ45 8P8C Connector Plug telephone Cable ; Length: 3 meter / 10 feet.