Figure 1 is the wiring scheme for the plug side of an RJ-11 connector. The diagram is shown with the "hook clip" on the underside. The typical RJ-11 connector has six terminals. Usually, only the middle four pins are used. The POTS (Plain Old Telephone Service) residential telephone wiring generally contains two pairs of wires - designed for two separate telephone lines. The center pins (Red and Green) contain the first telephone line. Please note that business (digital) phone systems may be wired differently.
RJ-45 (DATA) Plug Wiring
Figure 2
Figure 2 is the wiring scheme for the plug side of an RJ-45 connector in accordance with T-568B standards. The T-568B standard is the most commonly used. The wiring diagram is shown with the "hook clip" on the underside. The wall jack may be wired in a different sequence because the wires may be crossed inside the jack. The jack should have a wiring diagram or designated pin numbers/colors to match up to the color code below. When wiring a jack or an RJ-45 plug, remember to keep the “twist” as close as possible to the (jack or plug) receptacle. This will insure compliance with Ethernet wiring standards.
Specification T-568B
Pin #
Color
Pair #
Name
1
white/ orange
2
Transmit Data +
2
orange
2
Transmit Data -
3
white/ green
3
Receive Data +
4
blue
1
not used
5
white/ blue
1
not used
6
green
3
Receive Data -
7
white/ brown
4
not used
8
brown
4
not used
(Even pin numbers are always solid color. Odd pin numbers are white/ stripe color.)
For reference purposes only, Figure 3 details the wiring scheme according to T-568A standards. Be sure adhere to EITHER the T-568B or the T-568A standard. Do not mix different wiring specifications within the same wiring installation.
Figure 3
Specification T-568A
Pin #
Color
Pair #
Name
1
white/ green
3
Receive Data +
2
green
3
Receive Data -
3
white/ orange
2
Transmit Data +
4
blue
1
not used
5
white/ blue
1
not used
6
orange
2
Transmit Data -
7
white/ brown
4
not used
8
brown
4
not used
Crossover Cable
Some applications may require a crossover cable. The most common use of a crossover cable occurs in wiring together two Hubs.
A crossover cable “crosses over” Transmit and Receive Data. Pins 1 and 3 are crossed over, and Pins 2 and 6 are crossed over.
To build a CROSSOVER cable, simply wire one side according to specification T-568B, and wire the other side according to T-568A.
110 Wiring Block
Greenlee Punchdown Tool
BULK CAT5e Cable
Platinum Tools EZ RJ-45 Connectors
