What is a phone wiring diagram?

The telephone wiring diagram is a wiring schematic that details the anatomy inside of most telephone models. It sometimes comes with photos and instructions that can help users correctly connect the telephone jack.

The telephone wiring diagram is designed to show the standard wiring anatomy while explaining the functions and connections for various wires, says Ask the Electrician. Most diagrams show the basic anatomy of conventional telephone systems, including floor telephone jacks, cord telephones, cordless telephones and wall phones. The diagrams also feature the connections for various telephone wires, including the red, blue, green, blue and white, and white and blue telephone wires.