Uis from Houston, Texas. How to Repair a Telephone System Wiring a Telephone System: Identifying and Rewiring Telephone System Equipment — If the telephones are not working right then this is an indication that the system has a problem and the system equipment and wiring should be looked at to see where the problem really is. Phone Jack Wiring and 4 Wire Connections Why are there four wire connections on a standard home phone jack? Repairing Security System Telephone Wiring How to Identify and Splice Telephone System Cables — Telephone system wiring is considered low voltage however when a call comes in there could be up to 90 volts present.
See more at the Electrical Questions Category Listing. See How to Wire it Right! Home Electrical Wiring All home electrical wiring projects should be performed correctly by trained and qualified individuals who understand the principles of electrical circuit wiring and the basic fundamentals of home construction. Detailed information is provided throughout areas of this website about the complexity of specific projects to help assist with you to understand the scope of work involved.
The following categories will provide more specific information for each project - below is an Example: Electrical Project Skill Level: Intermediate to Advanced - Best performed by a Licensed Electrical Contractor. Estimated Time: Depends on the personal level experience, ability to work with tools, install electrical circuit wiring, and the available access to the project area. Electrical Safety: Identify the electrical circuits found in the project area, turn them OFF and Tag them with a Note before working with the electrical wiring.
Home Electrical Parts and Materials: Electrical parts and materials should be approved for the specific project and compliant with local and national electrical codes. Electrical Codes and Inspections: Installing additional home electrical wiring should be done according to local and national electrical codes with a permit and be inspected. Helping You to Wire It Right! To figure out whether signal is getting to your home, learn how to troubleshoot for no dial tone on your phone.
If you have a problem with your inside wiring, it's your responsibility to get it repaired, including paying for the repairs.
It's not required that you have CenturyLink make the repairs — you can hire any experienced professional, or you can do the work yourself if you know how. If you hire us to do the repair, we waive the isolation fee and only charge you for labor and material costs. Because these fees vary based on what needs to be repaired, we can't give a ballpark figure here. We will provide a written estimate — and a satisfaction guarantee — before beginning work. Did you know? If you live in an apartment, equipment repair and installation may be included in your rental agreement — which means it probably won't cost you anything.
My phone jack wiring seems to keep having issues. It seems like the answer should be in this article. My phone rings once and then ends call when connected to all indoor jacks. I hooked the phone into the outdoor jack and it works. Get a Quick Reply! Ask the Electrician. Electrical Video 1 Electrical Wiring Tips? July 1, at pm. Bill Crimmel says:. April 21, at am. Nothing can be bridged on the line between the two units. The set contains two of the same devices.
It doesn't matter which one is put at which end they're both the same. Connect one at each end, and that's it! High Loop Current problems are causing service calls Greater than 35ma Loop Current symptoms include:.
Loop Current Tester. That's it! Because the Loop Current Tester goes anywhere across the line, our customers have told us that they find it a lot faster than getting out their digital meter and connecting it in-series with the line. Instructions and a diagram to measure loop current with a regular digital meter are in our Loop Current and Circuit Loss Tech Bulletin.
Same features as our Loop Current Tester above. Test Circuit Loss with One Button! If a user at a customer says they can't hear on a call occasionally , there's not much you can do about it. It's probably the long distance provider on one end or the other. If only a single user at a customer is complaining that they can't hear on a regular basis, an Amplified Handset will probably help that user.
If all or several users are complaining that they can't hear on a lot of calls , or that the outside party can't hear them, it's time to do some testing to see what's wrong. I've personally carried one brand or another of a Circuit Loss Tester for many years.
I don't know how a repairman can figure out what's going on without one, and Can't Hear complaints are pretty common. If you're a repairman , you'll have a pretty good idea of how a phone line sounds just by listening to it in your Butt-set, since that's what you do for a living.
If the line is low, you really need to know how low it is , so you can go to battle with the Phone Company. TIP: Through the years my ear has gotten pretty good at knowing if the level of a phone line is OK or not by simply calling a 1KC tone at the Phone Company in downtown Chicago I always call the same number.
My ear seems to have a pretty good idea of how loud it should be depending on how far I am from downtown. This works on both a Butt-Set and a regular telephone handset. I press the handset to my ear to make a good seal, and then I rock it forwards a little to break the seal.
It's pretty accurate as a first test. If it sounds low, I continue on to taking a Circuit Loss Reading. You need to measure the Circuit Loss of the phone lines in order to go to battle with the Phone Company. They aren't going to do anything about it unless you have some numbers to force them to take action and even then they may ignore you. Circuit Loss is measured between the local Central Office CO that the lines are working out of, and the customer's premise.
The CO sends out a cycle tone at 0db, and it's measured at the customer's demarc using a meter that reads the db level. Whatever the reading is, is the Circuit Loss on that line. If it reads That loss is usually just the result of the resistance of the length of small copper wires.
The farther the wires go, the lower the volume at the premise. Keep in mind that electrically, there are two parts of a phone line - the DC voltage and current, and the AC voltage audio measured in db. The AC audio on a phone line rides on-top of the DC talk battery.
While they're related, they don't always follow each other. Generally speaking, anything below a The phone company doesn't have to do anything about bringing up the level on the line until it's below At that point, it's really hard to hear , and very annoying for the customer. I've never heard anyone complain about a line that had a It's very difficult and expensive to amplify a 2 wire phone line.
It's a lot better to let the Phone Company do it! The Circuit Loss Tester is easy to use:. No batteries to worry about. That means that you use two phone lines. You put a Tone Generator on one line at the same premise , and call it from the line you're testing. See our 1KC Tone Generator below.
The 1KC Tone Generator sends out a cycle tone at 0db , and gives you a short period of silence stutters every 10 seconds Just like the Phone Company's Tone. It answers the line automatically on the first ring, and will hang-up as soon as it sees a CPC signal.
If you use the 1KC Tone from another CO , it's impossible to get the correct reading because there is always an unknown amount of loss between two or more COs. The 1KC Tone Generator is easy to use:. It's Line Powered, and it's Automatic! Need to know what kind of Central Office the Phone Company is using? How about the address of the Central Office? Click Here to do a CO Lookup! You'll also find all of the exchanges in that Central Office the actual CO switch could have many exchanges, allowing it to go over 10, phone numbers , and find all of the other COs colocated at that address there could be several.
Keep in mind that with the advent of Portability , there is no way to tell whether a particular phone number has been ported to another Phone Company without asking your customer if they know! You could try dialing 0 for the Operator , but it seems like most are now in India, and don't know who they're answering the line for they just say they're the Operator.
If you use the local Phone Company's 1KC Tone on a phone number that's been ported to another Phone Company's switch, the readings probably won't be accurate. If you know the test numbers for some of the COs in your area, you can look up that CO, and then enter the information into a form. We'll test them we don't want to keep calling someone's Grandmother! Since the database lists each CO individually, we need the information on specific COs.
Although we can try to put general notes in the listing that will apply to an entire city, state or area code, the most useful information is specific test numbers for a particular CO. At this point, we don't have a lot of test numbers, but we're hoping that will change quickly! In the Chicago area, and are popular for the 1KC tone, and or for Silent Termination. If you know the common four digit station numbers that a particular Phone Company uses, you may be able to figure out the test number you need by trying those four digits with all the exchanges shown for that CO in CO Lookup like XXX Since there are usually several exchanges working out of larger COs, the test numbers will only be on one of the exchanges.
As an example , if you do a CO Lookup on the exchange, you'll find that there are quite a few exchanges working out of that CO they all have the same CLLI code. Neither or give you a 1KC Tone , but if you try each of the exchange codes in that CO, when you get to you'll find that gives your a 1KC Tone. Note that on the list of exchanges working out of the same CO, there can be more than one area code in a Central Office. In the case of the CO that has the exchange, there are several area code exchanges.
This is usually the result of area code splits , where the line between the two area codes went right through the area where a single Central Office served several cities. When you need to do a CO Lookup , you'll find it right at the top of our main page at www. Just like the Phone Company's Quiet Line. Because there are no levels involved, you can put this at your office, on one of the customer's phone lines temporarily , or on any phone line with CPC so it will hang-up automatically.
Although Interconnect phone men seldom have to take noise or power influence readings, those readings would only be valid dialing a Quiet Line at the CO the line is working out of. While you could do a Loop Around Test for noise, we don't provide a worksheet for determining the noise on a line. I couldn't do repair without having a Quiet Line to call.
There are so many cases with static and noise problems that I use the Quiet Line all the time. There are also Sweep lines, that slowly step up from about hz to hz, so you can check the loss at various frequencies. Interconnects seldom if ever need to check the loss at anything other than 1KC.
No dip switches, no meter, just plug it in! It can also be hardwired to a 66 Block by cutting the twisted pair cable going to the modular plug in the middle, and punching the one pair from each of the two cut ends down to the 66 Block the plug side to the phone line, and the Regulator side to the phone equipment.
Sometimes you've just got to reduce the Loop Current to see if the problem clears. The reason that high Loop Current causes different problems on different systems, and different problems depending on how high the Loop Current is, is that high Loop Current produces heat. Once the electronic components in a circuit get hotter than what they're rated to work at, strange problems start popping up. The problems are going to be different on every different model and brand of phone system, and at different premises, because there will be more or less Loop Current effecting different sets of components in the various systems.
If you need to test loop current to see if it's high or low, use a meter with a DC ma range or use our Loop Current Tester. It can also be hardwired to a 66 Block by cutting the twisted pair cable going to the modular plug in the middle, and punching the two pairs on each of the cut ends down to the 66 Block the plug side to the phone line, and the Regulator side to the phone equipment.
They won't fit on a 66B block. Connects in-series between the telephone line or analog station port on the left side of the 66 Block, and the telephone equipment on the right side of the 66 Block. If you need to test one line in the middle of a bunch of lines, it can be hard to get your Butt-set clips on the 66 block. Attach your Butt-set to the clips on the front, and push the red switch to open the line and disconnect the equipment during testing. Remember that the phone line always comes in on the left on an RJX block, and the CPE equipment is always on the right.
Loop Current Attenuator. Our Loop Current Attenuator lets you reduce the Loop Current on a line by flipping one or more of the four DIP switches, as you watch a meter or Loop Current Tester for the current to get down to between 23 and 27ma.
There are no electronics in this Attenuator. There are only passive electronic components. Boxes that provide fake phone lines often put out Data Noise in frequencies above voice frequencies. We're talking about the fake phone lines you get from the cable company, the phone company who gave up on copper and is switching to fiber with a fake phone line, and some boxes from Internet providers who give you telephone service with Internet service.
You can't hear the Data Noise , but the real data from the CPU in the telephone or telephone equipment is sometimes clobbered by the Data Noise, so the phone equipment does strange stuff. What strange stuff?
It's going to be different on every piece of phone equipment. Maybe nothing, maybe stuff you've never seen go wrong before. There's no way to know. We now have two versions of the Data Noise Filter Which one do you need?
I don't know! You need to carry them both! There's no way to know which one will work until you try. This isn't an exact science since all of the makes and models of the boxes that provide fake phone lines work differently. It will save a ton of chasing your tail and replacing the KSU, etc. They're cheap and easy to try. Multi-line KSU-less phones, like the ones you buy at the office supply or big box store, normally communicate with each other on Line 1 between phones.
They send data at frequencies above the voice frequencies The result? The phones can't communicate with each other and the lights, intercom and ringing often don't work or is intermittent on the phones.
The only way you'll know if Data Noise is your problem is to put one of our Data Noise Filters on the jack on the fake phone line box, not in-front of any phone:. One may work, the other might not. There's no way to know until you try them! The PLUS version uses a different technology from our Regular version, and covers lower frequency noise.
Passes 1 Line through the RJ Jacks. This is the Regular version. Passes 2 Lines through the RJ Jacks. Comes with Beanies to splice the wires, or punch one side down to the block and beanie on the pair you just removed from the block so it's in-series. Comcode Recommended by Avaya. Comes with D4BU 2 foot cord for proper polarity. Reduce Cut-offs. It only seems like Magic! Some modem problems are caused by common mode noise and spikes on the phone line.
You can't hear these noises, but they affect:. Because of the Modem Filter's design, it also stops common mode spikes on the line that can damage your modem. Plug the Modem Filter into the modem, and plug the line cord into the Modem Filter. Modem Disconnects?
Speed Falls Back? So what happens? Or on an Industrial Modem Automatically regulates the loop current from the phone company or a PBX to 25ma. Protects your modem if you accidentally plug it into a digital phone jack that was not designed for analog phones or modems. Also works on fax modems, fax machines and phones that have problems with high loop current.
Includes lightning and surge protection for your modem, and even the phone that's plugged in with it! Small and lightweight with a 6' flexible modular line cord, it stores easily in your laptop's case. Allows for fastest data connection possible.
Helps stop garbled data and disconnects. Buy one now, or wait until you blow up your modem when you need it most! Matches telephone equipment to the phone line to reduce echo and fix DTMF recognition problems. Makes up for impedance mismatches between the phone line and the trunk card's hybrid transformer. VoIP phone systems are most likely to have echo problems because of the time it takes to convert analog to VoIP packets. It's difficult to detect improperly placed load coils, and most phone companies will ignore a trouble call like this.
When you hit a trunk in the CO without an echo canceller, you hear echo on that call. There's nothing that a technician can do to fix that problem, unless the phone company will help unlikely! The technician can listen for the echo by either calling in to the system from another line, or using a phone on the system to call out.
It's modular in and out direction doesn't matter, use either mod jack. In the old days, telephone system manufacturers often put jumpers on the trunk card, or allowed the technician to choose a or ohm termination in programming to match the impedance of the phone line.
Many manufacturers have stopped giving technicians that option, which has made it impossible to get rid of problems caused by the impedance mismatch. Today, simply choosing or ohms may not be enough. If there are improperly placed load coils on a line, it might take or ohms to best match the impedance of the line to the phone system's hybrid. There are no testers that are easily used in the field to allow a technician to determine the impedance of the telephone line or CPE equipment.
Changing the impedance of the line can correct quite a few problems:. But it's Close! There's only so much echo that a phone system's echo canceller will eliminate. If you hear echo for the first second or two of a call, the built-in echo canceller is training itself. None of those settings work for him on that system, but he said he learned to set it at ohms and let the Echo Stopper match the impedance of the line to the trunk card in the system.
He said not to leave it on Auto! He said it takes about 20 seconds after going off hook for the echo to go away using the Echo Stopper if the system is set to Auto. If you'd like more information on how the impedance of the phone system, analog station port or phone line can cause problems, see our Echo Elimination and DTMF Problem Tech Bulletin.
It will only take you a few minutes to try it, and there's no way to know if it will work if you don't try it! Detailed information on the separate items in the kit are further up and down the page. This handy Kit lets you test at the RJX by:. Or just plug them in to the phone system's modular jack. Any of these devices will be cheaper than fixing the echo with a fractional T1 and T1 card! Putting too much loss in the line can make an impedance mismatch worse, creating more echo possibly in the opposite direction from before.
It will only take a minute or two to see if a little attenuation will help the echo. Keep this Kit in your truck! There are times when you have to reduce the audio level of a telephone line. The Loss Insertion Tester will let you insert 1 to 4db of loss into the line, to let you see if reducing the volume on the line will fix your problem.
Temporarily install the Loss Insertion Tester in-series between the telephone line or analog station port, and the telephone equipment. By pressing the two switches, you can insert 1, 2, 3 or 4db of loss into the pair. There are two components to a telephone line. The DC talk battery, and the AC audio. They're specifically made NOT to lower the AC audio on the line, since that would cause Can't Hear problems as you lowered the loop current.
By putting a Modular 4db Fixed Attenuator not included in-series with the Loss Insertion Tester , you can insert 5, 6, 7 or 8db of loss into the pair when you push the switches. It's unlikely you'll need to insert more than 8db of loss onto a regular phone line. For each 1db of loss you insert, it reduces the loop current on the line by about 1ma.
0コメント