The RJ stands for 'Registered Jack'. It comes with 4 pin slots. It is used for dial up internet or voice. It is used with telephone cables.
Procedure :
- Using an RJ11 crimping tool, remove the outer protective sleeve leaving around 25mm of cable exposed.
- Fold over or cut off the extra e.g. the white/orange & white/blue cables.
- Straighten out cables into the required order - the convention is to use the 2 Blue/Orange wires for pin 2 & 3.
- Again use the crimping tool to cut off the sleeve of the core wires to leave about 12mm exposed.
- Push the cables into the 2 central RJ11 slots (will have copper pins).
- Use the crimping tool to crimp the connector onto the cable.