The following schematic diagram shows the RJ-11 standard phone jack diagram. It shows the front view of the female wall jack. This color scheme is used with standard 4-pair phone cables. The single color in parentheses represents the older solid-color phone wire colors, sometimes still marked or used on the in-wall phone connectors or in the wires of the external flat phone cables used to connect your phone to the wall jack.
The slot numbers next to the Tip and Ring indicators are usually marked on the jack. Note that the slot numbers (and solid color cross references) are for the common 4 and 6 terminal telephone jacks only, and would not apply to 8 terminal data jacks.
STANDARD 4-PAIR WIRING COLOR CODES
|1st Pair||Tip (+), slot 4
Ring (-), slot 3
|2nd Pair|| Tip (+), slot 2
Ring (-), slot 5
|3rd Pair||Tip (+), slot 1
Ring (-), slot 6
|4th Pair||Tip (+)
For 6-wire jacks use pair 1, 2 and 3 color codes. For 4-wire jacks use pair 1 and 2 color codes.