Telephone Line RJ25, RJ14, and RJ11 Pinout Diagram, Color Codes
RJ means Registered Jack. RJ25, RJ14, and RJ11 all of the jacks are have six positions and used for telephone line connection. These pins are described and differ from each other due to their actual physical pins or positions and the actual connections. These all the jacks physically look like same but there is a connection difference in their contacts. The concept of Tip and Ring is also very important to understand this topic. Tip and Ring are the two sides or o conductors of a telephone line. All the telephone plugs are identified by these two terms Tip and Ring. So the pins of the RJ25, RJ14, and RJ11 are identified as Tip and Ring as they are used for telephone lines. These two terms make a difference between the terminals. One telephone line has one Tip and One ring.
RJ25 Pinout Diagram and Color Code
RJ25 is a 6P6C connector. That means it has six physical pins and all of these six pins are connected.
When you hold the copper strip side of the connector towards the pin position will be counted from the left side to the right side. Here, the pin number and pin position are the same as all the six pins are used for the connection. It is a six-wire connection system. It can be used for the three telephone line connections. Here, you can see there are different different color codes for different different standards. Here, three standards are shown - Cat5e/6, 25pair color code, and Old US Bell system color code.
| Pin Position | Pin Number | Tip/Ring |
| 1 | 1 | Tip 3 |
| 2 | 2 | Tip 2 |
| 3 | 3 | Ring 1 |
| 4 | 4 | Tip 1 |
| 5 | 5 | Ring 2 |
| 6 | 6 | Ring 3 |
RJ14 Pinout Diagram and Color Code
The RJ14 is a 6P4C connector. That means it has six physical pins or positions but only four pins are connected.
Here, the pin position and pin number are different because all of the pins are not connected. It is a 4-wire connection system. It can be used for two telephone lines.
| Pin Position | Pin Number | Tip/Ring |
| 1 | Not connected | Not connected |
| 2 | 1 | Tip 2 |
| 3 | 2 | Ring 1 |
| 4 | 3 | Tip 1 |
| 5 | 4 | Ring 2 |
| 6 | Not connected | Not connected |
RJ11 Pinout Diagram and Color Code
RJ11 is a 6P2C connector. That means it has six physical pins or positions but only two of them are connected.
It is a 2-wire system. It consists of only one pair of Tip and Ring. That means it is used for only one telephone line.
| Pin Position | Pin Number | Tip/Ring |
| 1 | Not connected | Not connected |
| 2 | Not connected | Not connected |
| 3 | 1 | Ring 1 |
| 4 | 2 | Tip 1 |
| 5 | Not connected | Not connected |
| 6 | Not connected | Not connected |
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Telephone Line RJ25, RJ14, and RJ11 Pinout Diagram, Color Codes
Reviewed by Author
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December 06, 2021
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Reviewed by Author
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December 06, 2021
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