Network Wiring Instructions

By: CableOrganizer®

figure1

RJ-11 (TELEPHONE) PLUG

 

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 phone systems may be wired differently.

 

 


t-568B

RJ-45 (DATA) PLUG WIRING

 

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 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 ensure 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

 

t-568A

(Even pin numbers are always solid color. Odd pin numbers are white/ stripe color.)

For reference purposes only, the chart below 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.

 

 

 

 

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 BLOCK / 66 BLOCK PUNCHDOWN

 

Punchdowns are made with the pairs in order with the white-stripe wire first, then the colored wire.

  • Pair 1 white/blue - Blue
  • Pair 2 white/orange - Orange
  • Pair 3 white/green - Green
  • Pair 4 white/brown – Brown

Be sure to purchase an all-in-one tool that cuts, strips and terminates the ends of RJ11 and RJ45 cables.

Reminder hint: BLOG– BLue Orange Green and Brown


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