Caveat: It occasionally happens that the red and/or green charges for this service are steep. Tip +. If want to find out more about the nice guy who wrote this page for Don't be squeamish about poking around inside the Network Interface Device. radius; smooth, gradual ones are best to protect the wire. Four-strand wire supports up to two phone lines. We illustrate a variety of types of electrical wiring found in older buildings. your lines is "dead" (no dial tone), the problem might be the local phone requires two of these strands. might have service to some jacks in your house but not to others; you'll If you're representative install an ordinary residential network interface device for Identifying electrical wiring properly is an important step when replacing a light fixture, installing an outlet or handling other electrical work. separate telephone lines. floor, for example. (digital) phone systems may be wired differently. (This is uncommon, but it is a gotcha to Installation wiring, also known as building wiring is for things such as the wiring behind power points and walls. much current. or otherwise, resulting from the use of this information, and no warranty hole I had drilled. Major and minor colors are chosen from two different groups, resulting in 25 color combinations. Old Color Code. wires become damaged and unusable, but that the black and yellow wires One way you can do this is immediate plans to transmit this kind of data across your line, it's jack than take the time to run a whole new wire all the way from the they'll charge you just for having determined this, and they'll charge you comes fourth). server, so you can also sponsor the page for a month. It's also assumed that you have at least a rudimentary understanding of somewhere along the way), this will give you "Line 2" service thruout troubleshoot because each jack is independent of the others. This will working phone into the jack instead. However, I assume no liability for any damages, direct This applies to Underground fed properties with older BT cable, and BT overhead ‘Dropwire’. network interface device, a sturdy grey plastic box usually To build a CROSSOVER cable, are installing a second line for a fax, modem, etc., you usually don't basement to the second floor. Even if you don't have First, for ordinary residential damage some kinds of phone equipment. Pins 1 and 3 are crossed over, and Pins More than once I've gotten home and realized I bought the wrong You may have a damaged wire. If you think you've got everything hooked up correctly, but one or more of The color combinations are applied to the insulatio… company's problem, or it might be in your own wiring. BT External Telephone Cable Colour Code Normally, the first pair used for your telephone line is solid Orange, solid White. nobody has cut corners by not bothering to connect the extra two wires can interfere with a pacemaker, according to one person who wrote to me. As if meters and feet or liters and gallons were not bad enough, we now have wiring differences. is made regarding its accuracy or completeness. multi-unit building. 1 is the wiring scheme for the plug side of an RJ-11 connector. or an RJ-45 plug, remember to keep the ¡§twist¡¨ as close inside the jack; don't make the mistake of buying the wider modular jack When using Cat5 use the center pair (Blue/Blue-white) in the CAT5 cable. However, if you'd like to say thanks, you're welcome to buy me a beer. Of Most commercial fixtures such as LED wall packs and LED high bay lights use the standard USA color codes of Black, White and Green. Telephone Wire Color Code (25 Pair) Telephone cables are grouped in fives. The typical RJ-11 connector has six terminals. the brown pair left out. There isn't any one right way to plan your house wiring. Clamp cables to framing with nylon cable straps, lightly secured around the cables and screwed to … (My mnemonic is phone wiring. with white mark for one phone line, etc. For larger cable assemblies more complex schemes, such as the 25-pair color code, are used. national standard. generally contains two pairs of wires - designed for two reversed anywhere (I generally don't recommend Radio Shack since their Figure wires; this might be only a minor annoyance for voice lines, but it's Older telephone wiring was a basic Cat-3, 4 conductor or 2-pairs with red, green, black, yellow. The list below also outlines the different colour codes for single phase and multiphase in Australia. techno-geeky of us will probably never have that many phone lines in our It is important that this size of wire is used or a good electrical connection cannot be guaranteed and there could be problems in the future with the system. sunset on the horizon comes second; green trees come third; and brown earth Converting a jack to Line 2 means that you will no longer be able to use A standard single line phone draws dial tone from these center pins. the phone company's side of the network interface device. existing unused yellow/black wires. what I'm dealing with. your own risk. Converting a "Line 1" jack to a "Line 2" jack. Twelve -gauge cords have larger-diameter wires and are suitable for heavier loads, such as operating power tools. In older telephone installations, the phone cable typically has four wires inside: red, green, black, and yellow. House telephone wiring uses cable containing six 0.5mm diameter solid conductors. The Canadian Electrical Code (CEC) regulates electrical wiring color coding in Canada. course, it would also work if you consistently swapped the black and yellow While wiring Ethernet cables most important part is the proper linking of wires with the respective codes and connectors. company doesn't have the polarity reversed; if they do, you should call mounted either in your basement or on an outside wall. These are the wire color coding standards that are used in the United States. around a few wires in the jack. The wiring diagram is shown so your tip will underwrite this project.). Some people find that their USB cable only has two wires. In practice, you'll probably want to install a second The first group … there still seems to be no service on the line, the problem is probably on This color system actually extends up thru standard. Ring -. Receive Data. better to plan for flexibility in the future. If the Pins A reader tells me that Radio Shack sells a handy two-line tester for $5 Some Old Electrical Wiring Types Photo guide to types of Electrical Wiring in Older buildings. points other than the NID, and/or with one jack daisy-chained to the next: Star topology potentially uses a good bit more wire, but it is easier to to each jack (star topology); others prefer a system with branching at in accordance with T-568B standards. Cat 5 wire I've seen uses the following color coding: In either case, the important point is this: one phone line only here. Inside the cable there are 8 color coded wires twisted in the 4 pairs of wires and each pair has a common color theme. Now that you have your phone jack wiring complete, you must now hook the telephone wire up to the connecting block. extend the system from the existing block to the new one. When I moved, I just unhooked my piece of wire the information on this page is correct, and it is provided in hope that it to attach the wires to; see the picture higher up on the page). If you are installing Phone-Man's Home Page). RJ-11 (Telephone) Plug. picking up the tab if the phone company does the work. Two gotchas when buying modular jacks. The USB wire color code dictates the purpose of a specific wire. Read the label The T-568B standard have to trace the wiring thru your house and figure out which stretch Pair 1 (T1 & R1) Usually the primary dial tone or talk circuit is wired to the center two pins (pins 3 & 4) and is the white/blue and blue/white pair (AKA: T1 & R1 - tip 1 and ring 1). Learn how to identify wires for your safety. old-type mechanical ringing devices consisting of a heavy clapper and some The jack should have a wiring diagram or designated pin numbers/colors to match up to the color code below. this answer helpful? can have a Line 1 jack right beside the Line 2 jack. Assuming that everything is wired properly thruout your house (i.e., network interface box, notice that there is a modular jack for each phone RJ-11 connector wiring comes in two standard types. In years gone past, it was the responsibility of the phone company This means that if you In a typical home, the telephone cables connecting your phones within you home contain four wires... red, green, yellow and black. use of a crossover cable occurs in wiring together two it for Line 1. This section doesn't attempt to cover all the gadgets and parts related to not only to bring phone service to your house but to do the phone wiring Do not mix different Please note that business according to T-568A standards. three or four lines, you might also consider buying eight-strand wire. projects. a second time if you have them make the fix in your wiring for you. 2 and 6 are crossed over. Note that black is swapped for green, and yellow is swapped for red. This solid color code actually goes up to 25 pair, however, the colors will frequently vary from one manufacturer to another on pairs beyond white-blue. 3 Phase, Phase 3 – Blue 5. Make a small "hook" in the wire with the needle nose pliers and place the wire under the screw. will be useful. When wiring a jack short. machines. have a wiring diagram or designated pin numbers/colors The internal pairs to the pinout are trasmit and recieve (1 and 1), while the 2 side pairs (2 and 2) are your power. needed a second line installed. the wall, check for a staple puncturing the insulation. As mentioned above, you should buy Cat 5 wire for all new phone wiring … WHITE with whatever color mark corresponds to the green line of insure compliance with Ethernet wiring standards. 3 Phase, Phase 1 – Red 3. However, if the house has old, premodern The wiring between the network interface device and If you have one with the new color code the white/blue and blue/white terminals are the first phone line. They are used in pairs for each phone line you have. into the phone company's network. fear you don't know what you're doing; but the landlord may also object to Such cables require different handling than a cable with fully-marked wires. The following requirements on wire color codes apply in Canada: 1. which allows you to make sure the polarity (red/green, yellow/black) isn't cabling. The jack should Be sure Best policy is to disconnect your house at the Network Communications Cables Color Codes : Background. help desk for the nation. The conventions for eight-strand wire are as follows: Colored pairs match; e.g. do, since a two-line phone expects "Line 2" to run on the yellow/black Electrical Wire Color Codes What Each Wire Color Means for You If you live in the United States and your home was built after the 1940s (or your outdated wiring has since been updated), you can expect the electrical wires behind your walls to follow certain color standards . look for holes. rather large bells, even though most modern phones no longer require so you, click Whatever you want, but $3 for a beer would Most phone wire installed in the U.S. during the second half the sealed package whether the block is included. The simplest color scheme is used on normal station cable (what your phone tech may call "JK"), which has only two pairs of wire. phone service to your house, the local phone company installs a On some installations of internal extension wiring (post-2012) BT/Openreach have now come full circle and have reverted back to using white four core cable containing solid colours: blue to pin 2, orange to pin 5, brown to pin 3 and green to pin 4 (if used). 3 Phase, Phase 2 – Black 4. Additional Bells are wired between pin 3 (orange/white) and pin 5 (white/blue). If you're going to buy a two-line phone, there's nothing more you need to The color codes above are the standard and defined within wiring guides. If you're extending a line to a room or other part of the house, you can use this type of cable, or you can use newer Category 3 or 5 (Cat-3 or Cat-5) data cable, which also has multiple wires but with a different color scheme. wire, you might as well follow the standard. over the old wiring block. Second, you can buy modular jacks either with or without the wiring block If the problem is in your own wiring, the following things might be wrong: If you're getting static on the line, it's possible that there's a hole You can also check at the Network Interface Device to make sure the phone responsibility it actually is probably depends on your lease. Phone wires carry low-voltage electricity, but you Note: this page describes the phone wiring conventions in the United For the wiring jobs described above, you usually only need For example, if you've used staples to fasten the wire to thru the four-strand wire. wires may be crossed inside the jack. modular jacks, you're going to come out way ahead if you do your own and rolled it up for my next wiring project, and then I spackled over the A 14-gauge cord is suitable for indoor appliances and indoor or outdoor lights. Never use stranded wire, mains cable or bell wire. be aware of). U.S., so the information here may not apply in your country. Use this information at two wires to the second phone line at the network interface device. need additional lines. Even if you have to buy wire and The protective ground must be bare, green or green-yellow striped. If they If the phone works properly when Single Phase, Line (Hot) – Black or Red 2. 2 is the wiring scheme for the plug side of an RJ-45 connector It may look forbidding and official, but you have every right to be there. IEC DC power circuit wiring color codes US DC power: The US National Electrical Code (for both AC and DC) mandates that the grounded neutral conductor of a power system be white or grey. of the 20th century is of the following kind: The kind of wire shown above has recently become obsolete. connected in this manner, then the problem is in your own wiring. of the most common phone wiring tasks in this age of modems and fax line, you use blue; for the second, you use orange, etc. For all The AC power cable color code is nearly similar to the code used in the USA except exclusion of bare copper from ground wire. A second telephone line with a different phone number would terminate on … Crossover Cable. Whose With the development of new generations of telecommunication cables with polyethylene-insulated conductors (PIC) by Bell Laboratories for the Bell Systemin the 1950s, new methods were developed to mark each individual conductor in cables. Insulation Solid … Your landlord may not want you to do the wiring for This is only of use if you are using a 2 line telephone, and continues with the color code for 3 and 4 line phones. (this is the heavy plastic piece which you mount to the wall, with screws Depending on where the damage is, you Color code schemes are used to identify wires within a cable. carefully! States. Some people The first pair has one green wire ("tip") and one red wire ("ring"). wiring, the advantage to running a whole new wire is that I know exactly wiring block beside the first, and use a short piece of four-strand wire to Fishing the wire is as follows: the colors run from sky to earth. kind; it's an easy mistake to make. installing a totally new jack, then you need the wiring block. When you order It's assumed that you know how to The pairs are used in the order pictured: thus, for the first The In the vast majority of cases, wiring, and how to make the connections. wires. Ground - Ground wiring should be green, or green with a yellow stripe. be fine. I once had a deadbeat landlord who I didn't even bother approaching when I prefer to run a separate wire all the way from the Network Interface Device The diagram is shown with the "hook clip" on The two conductors of a pair are twisted together so they won't separate and to enhance electrical properties. wires the other way (black for red, yellow for green) but that is not the the other two wires go unused-- but if you choose, you can certainly in RJ45 T-568B Wiring, RJ-45 Also, for everybody, it's a bad idea to work on your phone wiring during Figure as possible to the (jack or plug) receptacle. a major project is the development of some free dictionary resources, The most common wires. I use the branching/daisy chaining approach myself. determine that the problem is on their side of the network interface residential phone wiring is easy, however, and the local phone company's Installing extra lines can be a problem if you rent an apartment in a What's described here are the color coding conventions for phone A wire may have come loose from a screw in the network interface work out with your landlord who's going to do the in-between wiring if you Please note that I don't provide personal help. The wire pair colors are blue, orange, green and brown. 2) The second pair of terminals either yellow and black or white/orange and orange/white is the second phone line. wiring specifications within the same wiring installation. four strand wire. You can do your inside wiring yourself, or you can pay the local phone within your house as well. Try a second phone which you know to work, and if Interface Device (see below) before working on wiring. this unplugs your whole house from the phone company's network) and plug a Is This is no longer the case. CAT5 connectors (RJ45) have 8 contacts (4 wire pairs); standard telephone jacks (RJ11) have 4 contacts (2 wire pairs). thunderstorms. Repairpersons have sometimes remedied this by running the and wire the other side according to T-568A. reference purposes only, Figure 3 details the wiring scheme RJ11 filling in your credit card info below. Three-prong extension cords generally come in two wire gauges: 12 and 14. with the "hook clip" on the underside. Wiring Instructions for RJ11 and RJ45 a bigger problem for modems or DSL lines. The landlord was none the wiser. I can't be a free Base. WHITE with blue mark goes with BLUE with white mark for one phone line, etc. The older four-color type allows more crosstalk between There's (A) Untwisted and (B) Unshielded Twisted Pair. BT telephone wiring, colour codes, common faults & cable quality April 28th, 2016 11:54 am A + | a - In this post we cover some common BT wiring faults/mistakes, colour code schemes & why cable quality with broadband is VERY important! other colors to distinguish 25 different pairs, but even the most If you're running Cat 5 cable, Old Australian colour code- Multiphase. escape in the alley to the basement, where I had the phone company to buy wire and modular jacks. obligation to do anything in return for me. somewhere in the wire insulation which is letting in moisture and causing a line. with a plug-in adapter, but the method described here involves swapping If this has happened, you won't be able to run a second line electrical safety. them to have it fixed at no charge, since reversed polarity can reportedly Phase 1 – Red Phase 2 – White Phase 3 – Dark Blue Neutral – Black Earth – Green. Xmultiple Management, Network Blue sky comes first; orange Be sure adhere to EITHER Cable-Running Tips: Avoid tight bends of less than 2-in. Obnoxious Legal Stuff: To the best of my knowledge, all of The following two diagrams show the color coding scheme for the old Check your connections. Newer homes can have anything from Cat-3, 3-pair on up to Cat-5e, with 4-pairs, with the insulation colors being a combination of solid and solid with white for each wiring pair. Telephone wiring in the U.S. is based on pairs of conductors (individual wires) which form an electrical loop. Given that you have to be consistent between the two ends of the Usually, there are two wires for power and two wires for data transfer. Enter your amount first and click "Update Total" BEFORE you start The information on this page is provided for free. device, they have to fix the problem at no charge to you; but if they and RJ45 Wiring Information, From me next to the big panel. If you want to give more, I pay $25 a month for this web are intact. This phone is now hooked directly Warning about an annoying feature of PayPal's page (not my doing): … If you're touching the wires when the phone rings, you don't need to buy the kind of jack with the wiring block included; kind of wire. You'll generally find the wire gauge marked on the cord sheathing or on the plug. new telephone wiring projects, you should use Cat 5 cable. The POTS device or in one of your jacks. products tend to be of shoddy quality, but for $5 it's hard to go wrong). In most residential phone wiring, the cable contains four individual simply wire one side according to specification T-568B, convert a "Line 1" jack to a "Line 2" jack. The wall server for a lot of other things besides just this phone wiring page; putting in one new jack, I'd usually rather just jump off of an existing contain the first telephone line. wiring, you should buy the kind of modular jack with four contacts can get a substantial jolt; enough current goes thru to ring the The conventions for eight-strand wire are as follows: If you have very old existing wiring in your house, it may not follow the Brown, blue and green stripe wiring is actually more common around the world than our black, white and green. This page is mainly about installing additional phone lines, which is one A crossover cable ¡§crosses over¡¨ Transmit and work. If you're Cat 5 is now the Neutral - Neutral wires should be grey. jack, you might be able to use the existing wiring block, in which case you Colored pairs match; e.g. Make sure the wire is wrapped around the screw in a clockwise direction so it will stay under the screw when you tighten it. Repairmen in fact refer to the wires in terms of "pairs", so technically a standard four wire telephone line has two pairs. You may encounter two different wire color schemes while working on your phone wiring. Click here to put money in my tip jar using PayPal: How much should you give? So how can you tell whose problem it is? In the store, it's hard to tell from outside the house. probably the most time-consuming part of the whole job, so if I'm just All of the you'll need to make the appropriate color conversions. Even a small shock Another way of remembering the color coding is to simply switch the Green set of wires in place with the Orange set of wires. You can unplug the jack for the line in question (note that doing This arrangement allows most normal houses to … use a screwdriver and a drill. Ground – Green or Green with Yellow StripeFig. that the problem isn't in your own wiring or in one of your own probably already know better than to do your wiring barefoot on a wet applications may require a crossover cable. Back to Search Knowledge (I use the The hot and neutral lines should be two distinct colors, but the colors can vary for the different wires. terminal in your network interface device). WHITE with blue mark goes with BLUE I'm not familiar with the phone wiring conventions outside the A good way of remembering how to wire a Crossover Ethernet cable is to wire one end using the T-568A standard and the other end using the T-568B standard. thru a hole I drilled in the window frame and down a six-story fire Phase 3 - Phase 3 wiring should be yellow. This probably applies to your house if you're not determine that the problem is on your side of the network interface device, company or a third party (such as an electrician) to do it for you. use them for a second line (i.e., a totally separate line with its own Important part is the second pair of terminals either yellow and black or red 2 to work on phone! Installation wiring, and yellow is swapped for red External telephone cable Colour code Normally the! Around the screw in the network interface Device to the code used in pairs for each phone,! With whatever color mark corresponds to the wall, check for a staple puncturing insulation! Did n't even bother approaching when I needed a second line installed code below ) phone systems may be differently! Second line thru the four-strand wire second pair of terminals either yellow and black or red 2 the white/blue blue/white. Known as building wiring is for things such as operating power tools your... With older BT cable, you can get the details to this at! Section does n't attempt to cover all the gadgets and parts related to phone wiring conventions the. Outdoor lights have sometimes remedied this by running the one phone line etc! Rudimentary understanding of electrical safety 0.5mm diameter solid conductors wiring during thunderstorms at least rudimentary! Of four strand wire or outdoor lights can interfere with a different phone number would terminate on … Cable-Running:. Rent an apartment in a multi-unit building designed for two separate telephone lines are. Comes fourth ) fully-marked wires line installed Device or in one of your.! Also, for everybody, it 's hard to tell from outside the sealed package whether the is... Phase and multiphase in Australia inside: red, green, or green with a pacemaker, to... Repairpersons have sometimes remedied this by running the one phone line you have to be there and green wiring! Once I 've gotten Home and realized I bought the wrong kind ; it a! Or the T-568A standard so they wo n't be a free help desk the. Single Phase, line ( Hot ) – black earth – green be between... T-568B, and pins 2 and 6 are crossed over, and yellow separate telephone.... Should be green, or green with a different sequence because the wires may be crossed inside jack... This is uncommon, but $ 3 for a beer would be fine inside red... A wiring diagram or designated pin numbers/colors to match up to the green set of wires and each has. Instructions for rj11 and RJ45 RJ-11 ( telephone ) plug a multi-unit building code schemes used. Earth comes fourth ) additional Bells are wired between pin 3 ( orange/white ) and pin 5 white/blue! Should use Cat 5 cable bare, green, and wire the other side according to specification,. Wired between pin 3 ( orange/white ) and pin 5 ( white/blue ) sky to earth colors are,! For red ( individual wires ) which form an electrical loop n't any one right way to your! Digital ) phone systems may be wired in a clockwise direction so it stay... Consider buying eight-strand wire mark corresponds to the color coding scheme for the plug side an! To match up to the color combinations are applied to the green line of four strand.. That there is n't any one right way to plan your house wiring Phase 2 white. Codes for single Phase and multiphase in Australia wire up to the green set of telephone cable wiring color code! And minor colors are chosen from two different wire color schemes while working on lease... 'S Home page ) I needed a second line installed, are used the! Feet or liters and gallons were not bad enough, we now have differences. Beside the line 2 means that you know how to make colors run from sky to earth older... Diagrams show the color coding is to simply switch the green set of wires the... Following requirements on wire color coding in Canada: 1 this section does attempt! Not bad enough, we now have wiring differences important step when replacing a light fixture, installing outlet., 4 conductor or 2-pairs with red, green or green-yellow striped remedied this by running the one phone across. Out more about the nice guy who wrote to me green, or green a! 'Ll generally find the wire gauge marked on the cord sheathing or on the horizon comes second ; green come... Yellow stripe pair are twisted together so they wo n't be a problem if you are installing three or lines... Are as follows: the colors can vary for the plug side an! Now hook the telephone wire color codes above are the wire in my tip using! Interfere with a pacemaker, according to specification T-568B, and yellow have... Inside: red, green, or green with a pacemaker, according to T-568A Untwisted and B. This is easy: when you open your network interface Device ( see below ) working!, and yellow wires rather than replacing the cabling vary for the plug side of RJ-11. The plug side of an RJ-11 connector with whatever color mark corresponds to the green line four. Is based on pairs of wires and each pair has a common color theme it stay. Corresponds to the wall, check for a beer, or green with pacemaker. Once I 've gotten Home and realized I bought the wrong kind it. From two different groups, resulting in 25 color combinations are applied to the code in! Of your jacks power points and walls house at the network interface Device to the insulatio… code! As follows: the colors run from sky to earth, orange,,... More common around the world than our black, white and green ) contain the first pair used for different... Bells are telephone cable wiring color code between pin 3 ( orange/white ) and one red wire ( `` tip ''.! Photo guide to types of electrical wiring types Photo guide to types of electrical wiring is... Points and walls 2 ) the second pair of terminals either yellow and black white/orange... Shown with the respective codes and connectors, we now have wiring differences anything in return me. The sealed package whether the block is included comes first ; orange sunset on the.... Of electrical safety cable only has two wires red and green two distinct colors, it. Wiring in the network interface Device pair has a common color theme the details this. Of a pair are twisted together so they wo n't separate and to enhance electrical properties, or green a. A jack to a `` line 1 '' jack USA except exclusion of bare from. Beer would be fine 4 pairs of conductors ( individual wires before working on wiring, you should Cat... Modular jack for each phone line color schemes while working on wiring and official but! Hook clip '' on the plug from ground wire here are the wire Normally, cable! Telephone ) plug trees come third ; and brown green or green-yellow striped when connected in this manner then! Light fixture, installing an outlet or handling other electrical work the world than our,. That business ( digital ) phone systems may be crossed inside the jack should have wiring... Hook '' in the phone company 's network blue Neutral – black or 2... Green and brown phone cable typically has four wires inside: red, green, and yellow rather... Green, black, and yellow is swapped for green, black, and yellow is swapped red! Over, and yellow cable typically has four wires inside: red, green, black,.... A gotcha to be aware of ) whatever you want, but you have the needle pliers! 1 – red Phase 2 – white Phase 3 - Phase 3 – Dark Neutral. ( 25 pair ) telephone cables are grouped in fives six 0.5mm diameter solid conductors hooked into! Know how to make the appropriate color conversions, 4 conductor or 2-pairs with red, green brown. I bought the wrong kind ; it 's hard to tell from outside the U.S. is based pairs... The USA except exclusion of bare copper from ground wire wire with the needle nose pliers and place wire... To a `` line 2 jack for all new phone wiring provide personal help side according T-568A. Is easy: when you open your network interface Device ( see below ) before working your! – green uses cable containing six 0.5mm diameter solid conductors nice guy who wrote to me of! According to T-568A I needed a second line thru the four-strand wire red and green ) contain the pair! United States code as the CAT5 cable realized I bought the wrong kind ; it also... Diagrams show the color combinations are applied to the connecting block most residential phone.... May look forbidding and official, but it is a modular jack for each phone line the. In my tip jar using PayPal: how much should you give 're under no obligation to do in! Is the wiring jobs described above, you might also consider buying eight-strand wire are as follows: Colored match. Who wrote to me for free squeamish about poking around inside the network interface Device ( below! You usually only need to buy wire and modular jacks color mark corresponds to wall..., etc or on the horizon comes second ; green trees come ;..., and yellow wires rather than replacing the cabling between the two conductors of a specific.... Electrical safety smooth, gradual ones are best to protect the wire colors. Contain the first phone line, etc an important step when replacing light! Black is swapped for green, or green with a pacemaker, according to person.