The connectors used for registered jack installations are primarily the modular connector and the 50-pin miniature ribbon connector. For example, RJ11 uses a six-position two-conductor connector, RJ14 uses a six-position four-conductor modular jack, while RJ21 uses a 25-pair (50-pin) miniature ribbon connector. On the other you'll crimp 1 or more RJ11 jacks. If you just want to pull one line out for a single phone, pick the pair of wires for the line you want and insert them in the center pins of the RJ11. You can also do 2 2-line RJ11 plugs, 4 1-line RJ11 plugs, whatever works for you.
From Wikipedia, the free encyclopedia
RJ11 is a physicalinterface often used for terminating telephone wires. It is probably the mostfamiliar of the registered jacks, being used for singleline POTS telephone jacks inmost homes across the world.
RJ14 is similar, but for two lines, andRJ25 is for three lines. RJ61 is a similar registered jack for four lines.The telephone line cord and its plug are more often a true RJ11with only two conductors.
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Contactarrangement
All of these registered jacks are described as containing anumber of potential contact'positions' and the actual number of contacts installed withinthese positions. RJ11, RJ14, and RJ25 all use the same six-positionmodularconnector, thus are physically identical except for thedifferent number of contacts (two, four and six respectively).
Rj11 Pin Slots T568 Standard Time
RJ11wiring
Cables sold as RJ11 are nearly always 6P4C (six position, fourconductor), with four wires running to a central junction box. Two ofits six possible contact positions connect tip and ring and the other two conductorsare then unused. 6P2C and 6P6C can also be found in stores.
The conductors other than the two central tip and ringconductors are in practice used for various things such as a ground for selective ringers, low voltagepower for a dial light, or for'anti-tinkle' circuitry to prevent pulse dialing phones from ringing thebell on other extensions. With tone dialinganti-tinkle measures are not required.
Poweredversion of RJ11
In the powered version, Pins 2 and 5 (black and yellow) maycarry low voltage AC or DC power. While the phone line itself (tipand ring) supplies enough power for most telephone terminals, oldtelephone terminals with incandescent lights in them (such as theclassic Western Electric Princess and Trimlinetelephones) need more power than the phone line can supply.Typically, the power on Pins 2 and 5 comes from a transformer pluggedinto a wall near one jack, supplying power to all of the jacks inthe house. Trimline and Princess phone dial lights are rated at 6.3volts and the transformer output is typically around 5 volts,providing a long service life for the incandescentlamps.
Pinouts
The multi-conductor cables attached to RJ11 connectors usuallyhave colored sheaths.
| position | RJ25 pin | RJ14 pin | RJ11 pin | Pair | T/R | ± | Cat 5e/6 colors | Colors | Old colors | German colors[1] |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 3 | T | + | white/green | white/green | white | pink | ||
| 2 | 2 | 1 | 2 | T | + | white/orange | white/orange | black | green | |
| 3 | 3 | 2 | 1 | 1 | R | – | blue | blue/white | red | white |
| 4 | 4 | 3 | 2 | 1 | T | + | white/blue | white/blue | green | brown |
| 5 | 5 | 4 | 2 | R | – | orange | orange/white | yellow | yellow | |
| 6 | 6 | 3 | R | – | green | green/white | blue | gray |
While the old solid color code was well established for pairs 1and 2, there are several conflicting conventions for pair 3. Thecolors shown above were taken from a vendor of 'silver satin' flat8-conductor phone cable that claims to be standard. Other 6 pairsolid (old) bellwire cables may substitute white for orange. Atleast one other vendor of flat 8-conductor cable uses the sequenceblue, orange, black, red, green, yellow, brown and white/slate.
Holding the connector in your hand tab side down with the cableopening toward you, the pins are numbered 1-6, left to right.
Rj11 Pin Slots T568 Standard Chart
In modern structured wiring Cat5e or Cat6 is commonly used in homes andbuildings. The Cat 5e and Cat 6 data lines are often used for bothvoice or data. The color codes above are the standard and definedwithin wiring guides.
See also
- BS6312 - British equivalent to RJ25
- 4P4C - Handset jack
- 8P8C (RJ-45) - Eight positionconnector used with Ethernet
- Modified Modular Jack -- Avariation used by Digital EquipmentCorporation for serial computer connections
- Telephoneplug - Includes a table of the countries where RJ-11 and othertelephone connectors are used
Notes andreferences
Rj11 6 Pin Slots For The T568 Standard
- ^This different color scheme is in use in Germany and someneighboring countries, and may be encountered with equipmentmanufactured in or for these countries. However, with Germandomestic telephone equipment, 6P4C plugs and sockets are typically onlyused to connect the telephone cable to the phone base unit. Toconnect the telephone cable to the phone jack at the other end, themechanically different TAE socket and connector is used. Astandard German phone cable thus has a TAE plug at the phone jackend and an RJ11- or RJ14-wired 6P4C plug at the phone end, with thewires color-coded as shown. The third wire pair (pink/gray) andfully RJ25-wired 6P6C plugs and sockets are very rare in domestictelephone equipment. Usually just four wires as per RJ14 arepresent.
Externallinks
Rj11 Wiring Standard
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