RJ11 Telephone

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6 PIN RJ11, RJ14, RJ25 FEMALE CONNECTOR 6 pin RJ11, RJ14, RJ25 female connector at the phone and wallet socket (Jack).

6 PIN RJ11, RJ14, RJ25 MALE CONNECTOR 6 pin RJ11, RJ14, RJ25 male connector at the cable (Plug).

The six-position plug and jack commonly used for telephone line connections may be used for RJ11, RJ14 or even RJ25, all of which are actually names of interface standards that use this physical connector. The RJ11 standard dictates a 2-wire connection, while RJ14 uses a 4-wire configuration, and RJ25 uses all six wires. The RJ abbreviations, though, only pertain to the wiring of the jack (hence the name “registered jack”); it is commonplace but not strictly correct to refer to an unwired plug connector by any of these names. Typically you’ll find the RJ-11 and RJ-14 on your Plain Old Telephone Service (POTS) though your RJ25 typically is found in an Integrated Services Digital Network (ISDN) Line. It is the communication standards that lets telephone lines to carry digital, voice, video, and network services.

position RJ25 pin RJ14 pin RJ11 pin Pair T/R ± Cat 5e/6 colors Colors Old colors
1 1 3 T + Pair 3 Wire 1 Cat 5e/6 white/green Pair 4 Wire 1 white/green Pair 4 Wire 1 orange
2 2 1 2 T + Pair 2 Wire 1 Cat 5e/6 white/orange Pair 2 Wire 1 white/orange Pair 2 Wire 1 Old black
3 3 2 1 1 R – Pair 3 Wire 2 Cat 5e/6 blue Pair 1 Wire 2 blue/white Pair 1 Wire 2 Old red
4 4 3 2 1 T + Pair 1 Wire 1 Cat 5e/6 white/blue Pair 1 Wire 1 white/blue Pair 1 Wire 1 Old green
5 5 4 2 R – Pair 3 Wire 1 Cat 5e orange Pair 2 Wire 2 orange/white Pair 2 Wire 2 Old yellow
6 6 3 R – Pair 1 Wire 1 Cat 5e green Pair 3 Wire 2 green/white Pair 3 Wire 2 blue

Notes

  • While the old solid color code was well established for pairs 1 and 2, there are several conflicting conventions for pair 3. The colors shown above were taken from a vendor of “silver satin” flat 8-conductor phone cable that claims to be standard. Other 3 pair solid (old) bellwire cables may substitute white for orange. At least one other vendor of flat 8-conductor cable uses the sequence blue, orange, black, red, green, yellow, brown and white/slate.
  • Holding the connector in your hand tab side down with the cable opening toward you, the pins are numbered 1-6, left to right.
  • In modern structured wiring Cat5e or Cat6 is commonly used in homes and buildings. The Cat 5e and Cat 6 data lines are often used for both voice or data. The color codes above are the standard and defined within wiring guides.
  • The CAT 3 Cable can also be used for the RJ-14 Pinout with the same color code as the CAT5 and CAT6. The internal pairs to the pinout are trasmit and recieve (1 and 1), while the 2 side pairs (2 and 2) are your power.
  • The RJ25 is going to be the standardized phone cable for your ISDN (Integrated Services Digital Network) it allows phones such as the (STE) to carry digital, voice, video, and network services. Though there is an RJ45 port connection, you can implement the RJ25 to push all information if the Port has the proper configurations at the switch. For an RJ25 you’ll need to use CAT5 or CAT6 since a CAT3 is only a 4 wire cable.

References and Sources

Category:Networking Connectors

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