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We have a comdial DX120 control box with four phones. We are using three lines. Our telephone company came to the office and wired a duplex jack so that we can move one of the phones. When we plug two phones into the duplex jack the system goes crazy. Lights flash on the phones and none of them work. The A T & T technician says the system needs reprogramed??? We are in San Antonio, Texas. Who can help?

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  • Kathy Kahn Jun 01, 2010

    You were able to confirm areas of information we needed in order to correct our phone wiring. We may be back to this issue after we obtain the necessary supplies to try and run a new jack.

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I think you should not use a duplex jack to increase the number of phones. You should instead lay a new line from the control box to the intended telphone unit. Also i think the control box may not need to be reprogrammed and most probably it doesnot support use of duplex jacks.

Regarding who can help in your area, I will have to say sorry in that regard as i dont know any one there who can help.

Posted on Jun 01, 2010

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  • Kathy Kahn Jun 01, 2010

    Thank you, this is what I was afraid of. Can you tell me where I can purchase the proper wire and supplies to run a new independent phone jack? I have tried the local suppliers and they do not carry the two wire line that is in use with my system. I have maintenance technicians in the apartment community that can run the wire I just don't know where to buy the right stuff to get it done??

  • Mohsin Idrees
    Mohsin Idrees Jun 01, 2010

    Well if your system is using the standard plugs called RJ11, Here is a picture.








    Then you dont need to purchase specially the two core wire. The flat four core or even the six core will work fine because the remaining wires will only be redundant at not used only the middle two will be used. Actually the two core wire is not used any more hence it is usually not available easily.

  • Mohsin Idrees
    Mohsin Idrees Jun 01, 2010

    Sorry i am not able to tell you about exact places where you can buy the supplies as i dont live in your area.

  • Kathy Kahn Jun 01, 2010

    I have tried using the standard four wire cord. The phones will not work when I use the four wire. I found an old 6' two wire cord that works with one of the phone sets. The problem will be in wiring a new jack. Can we use 4 or 6 wire from the control box to the new jack??

  • Mohsin Idrees
    Mohsin Idrees Jun 01, 2010

    I think the problem is with connection method. I think you will need to experiment a bit with different wiring configurations or you can study the existing wiring and conclude that where do the two wires are going in the RJ11 connector so you may crimp the new connectors in the same fashion.

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Our cordless phone says check tel line we have unplugged and plugged back in nothing called phone company they said everything was fine still our phone isnt working


You probably have a telephone wiring problem inside your home or your cordless telephone base has failed. I like to use an old corded phone for diagnostics. If you have other phones connected to the same phone line, make sure that all handsets are in standby/on hook.

First, try a different RJ-11 cable between the jack and the base. (Note: I have seen someone use a handset cord here. It doesn't work so make sure that the correct cable is in use.) If the "check tel line" message persists, connect the test phone to the jack with the RJ-11 cable. Do you hear a dial tone? If you do, then the cordless phone base has malfunctioned. If it is under warranty, contact the manufacturer. Otherwise, replace the phone.

If neither phone gets a dial tone, check if the test phone hears a dial tone at another jack on the same line, if you have one. If you have a dial tone here, then you know that the wires in the first jack or between the service box and the jack have a problem. Check the jack. There are two types of jacks: keystone and screw connections. Look for any loose conductors. For a keystone jack, you will need a punch-down tool, available at most hardware stores in the wiring section. Do not strip the wire; just push it back into the correct spot in the keystone. For screw-type jacks, strip the wire and secure it under the correct screw. See http://www.lanshack.com/wire_phone_jack.aspx for the pattern.

Find your service box. Check if any wires are dangling. I had a service upgrade where the wiring for one jack was left loose behind the siding. Once that wire was connected to the new box, all of the jacks worked. Even though the telephone company said that the service was good, try your test phone if there is an RJ-11 jack in the service box. If you do not have a dial tone, get your phone company to send a technician. The outside wiring needs to be repaired. (Most companies should repair this for free. However, some companies are trying to get more people switched to other service types.)

Do you have a DSL line? If so, where is the DSL filter? If your filter is inside, you may need to replace it. If it is part of the service box, your telephone company technician should fix it for you.

If your phone line has a dial tone at the service box and the problem isn't in the jack, then you may want to hire a professional to fix a wiring problem in the wall. Most telephone companies will provide a technician to do this for a fee.

I hope this helps.

Cindy Wells
(I have had mice damage copper wire leading to a phone line outage. Other external wiring problems were due to contractors digging too close to the phone line. With a fiber-optic service, when the modem in the service box failed, the phone lost the line and dial tone.)

Sep 16, 2017 | Lands Phones

2 Answers

All 4 hand units say "line in use" How do exit tis situation? hand units model KX-TGA410, baseunit KX-TGA131


A "Line in Use" message generally means that there is no dial tone detected. Assuming that all of the handsets are in Standby and any other phones are connected to that line are also on their hooks, then you need to determine why the base isn't getting a dial tone. This can be an inside or outside wiring problem.

I like to use an old wired telephone for testing since power isn't required to use the phone. You also need another RJ-11 telephone wire. Try connecting a new RJ-11 wire between the KX-TGA131 base and the phone jack. If there is a dial tone with the new cable, you had a bad cable. If not, try the alternate phone. If the test phone has a dial tone, then the KX-TGA131 has failed or has a power problem. If the phone is under warranty, contact Panasonic.

If neither phone has a dial tone, take your test phone to another jack connected to the same phone line (number), if available. If you have a dial tone here, then the problem is in the first jack or the wiring to the jack. You can try to repair the jack yourself. Remove the cover plate and look at the jack. If any wires are loose, reconnect them to their appropriate location. See http://www.lanshack.com/wire_phone_jack.aspx for the usual patterns. There are two types of telephone jacks, keystone and screw terminals. For the keystone type, you need a punch-down tool (available at many hardware stores in the electrical section) to put the wires back in place. Do not strip the individual conductors before using the punch down tool. For screw terminals, strip the wire before securing it under the screw.

If you do not have another jack or there is no dial tone at the second jack, find the incoming telephone service box. Open the box and check the wiring. If you find an RJ-11 jack, plug in your test phone and listen for a dial tone. If there is a dial tone, you have a wiring problem. Check the jacks as above. You may want to have someone else check the wiring in the walls if there are no broken/loose wires in the jacks. Your telephone company will usually offer the service for a fee.

If you can't test the phone line at the service box or there is no dial tone at the service box, contact your telephone company. They will test the service box and should repair outside issues for free. (Some providers are trying to avoid copper repairs.)

If you have DSL, you may need to check the line filter. This filter can disrupt the dial tone when it fails. If the filter is in the interior, you are responsible for the replacement. In my service area, the DSL filter was in the service box so my telephone company repaired it.

I hope this helps.

Cindy Wells
(I've had no line issues several times. Sometimes, it was the result of a contractor cutting through underground lines. With copper wire, rodents sometimes damaged those underground wires. Once it was simply an issue of a contractor who'd left one wire loose after upgrading the service.)

Aug 26, 2017 | Lands Phones

1 Answer

My phone says "Line in use" but nobody is using it.


Some of my telephones will read "Line In Use" when the phone doesn't detect a dial tone. I like to use an old wired telephone to check whether the problem is with the cordless phone base or the phone line wiring.

First plug in the test phone and check for a dial tone. If there is no dial tone, try a different RJ-11 cable between the phone and the jack. If there is still no dial tone, use the test phone at another jack and check for a dial tone. If you have two jacks with no dial tone, find your incoming telephone service box. If you have a relatively new phone service installation, the service box will have RJ-11 jacks. Plug your test phone into the jack and check for a dial tone. If there is still no dial tone, contact your telephone company. They will repair an outside wiring problem for free. If the service box doesn't have an RJ-11 jack, you'll need to ask your telephone company to test the phone line for you.

If there is a dial tone at another jack or at the service box, you have an inside wiring problem. You can check for loose or broken wires inside of the jack. Most use either screw terminals or a punch-down design. For the screw terminals, strip another section of the unbroken part of the wire, if needed. Secure the wire under the screw. For the punch-down terminal, take off the cover. Then you'll need a tool that is available in most hardware stores in the electrical wiring section. Do not strip the wire; just place it over the correct place in the terminal and push it into the contacts with the tool. Trim off any excess wire with a small pair of small wire cutting pliers, if the excess wire is blocking the cover from fitting back onto the terminal. http://www.lanshack.com/wire_phone_jack.aspx has a good diagram of the wire color and pin assignments. If the wiring is okay at the jack, you'll need to check the rest of the wiring for problems. Since the broken wire might be inside the wall, you may want to have a professional check it out. Your telephone provider's technicians can do this for a fee. If you have a DSL computer line, you should check the DSL filter. If the filter is inside at the jack, you'll need to replace the filter. If it is out at the service box, your telephone company will do the replacement.

If there is a dial tone at the jack with the test phone, check the purchase date on the L401 system. If it is under warranty (1 year usually), contact Motorola. Otherwise, replace your Motorola phone system. It's generally not worth the minimum repair and shipping costs.

I hope this helps.

Cindy Wells
(I've had dial tone issues after lightning strikes (the DSL filter was damaged), mice eating wires (buried phone line) and due to county road crew/contractors who dug too close to the wire. The first two problems required phone calls to get a technician to fix the outside line. The last one gets fixed by the contractors/phone company as soon as they can.)

Nov 09, 2015 | Motorola L401 DECT 6.0 Digital Cordless...

1 Answer

Why does my panasonic cordless home phone have the error message "check tell line?"


I like to use an old corded phone to diagnose telephone line problems. First though, try a new telephone cord between the base and the phone jack. (This can be obvious to some but I once saw a person swap a handset cord (the coiled cord) and an RJ-11 cable.)

Next plug a different phone into the jack. If it gets a dial tone, the KXTGA470B needs service. (If it is out of warranty, it may be better to replace it.) If the second phone does not get a dial tone, try the spare phone at a different jack if there is one. If the phone gets a dial tone at this jack, your wiring to the jack or inside it is faulty. I'd check the jack first, unscrew the faceplate and look at the back of the unit. There are two types of jacks. One has all of the conductor wires connect to screw terminals. If any wire is broken, strip the shielding from a bit more of the wire. Then wrap the wire under the appropriate screw. The other type of jack is a keystone. If a wire is loose, you'll need a punch-down tool (available at many hardware stores in the wiring section). Do not strip the wire, just press a new section into the correct point on the keystone. See http://www.lanshack.com/wire_phone_jack.aspx for the pin assignments.

If there isn't another phone line jack or there is no dial tone at another jack, find where your telephone service comes in. Open the box and look inside. If you are lucky, the service will have an RJ-11 connection. Plug in your test phone and check for dial tone. If there is still no dial tone, call your phone company and tell them to fix it. (I've had mice chew wires in underground service.) It will be a free repair. If there is a dial tone here, you've confirmed an inside wiring issue. One thing to check while you are at the box: since you have multiple jacks, check that all of the wires connect to the box. We had our service upgraded and they forgot to wire one jack to the new service box. (It was obvious when we went to the box; the wire was just floating behind the house's vinyl siding.)

Next consider your service type, if you have DSL with your phone service, check the filter. Some phone companies have these inside the home and you are responsible for it. Lightning strikes nearby can damage them and interrupt the phone line. Otherwise, since you didn't see any breaks in the wires when you inspected them, you may want a professional to check the wiring. It's possible to have one broken conductor within the shielding. (One way to test this is to swap the wires at the service box and the jack. Most RJ-11 lines are 4 or 6 wires. Two wires are needed for each line. Use the diagram I linked to above and physically connect the R2 and T2 lines to the R1 pins.) Some telephone companies will do indoor repairs for a fee.

If the service box doesn't have an RJ-11 connection or you have an outside DSL filter, ask them to send someone out to physically check the service. (Just because their computer says it is up, doesn't mean it is. I've seen it happen.)

I hope this helps.

Cindy Wells
(My preferred test phone is an old rotary unit. It never fails unlike some newer phones.)

Aug 01, 2014 | Panasonic KXTGA470B KX-TGA470B KX TGA470B...

1 Answer

RCA visys dect 6.0 Line 2's light is lit and no dial tone. All handset are in off mode. Only Line 1 is available


Are the phone cables correctly connected to the base unit? Try a new cable for Line 2, if you have separate L1 and L2 jacks. (If the lines are integrated in one jack, make sure to use a 4-conductor RJ11 cord.) I assume the service hasn't been cancelled for line 2 and that you are at a wall plate with both lines.
If you have separate jacks, I like to use a different phone to check the jack. (A simple old fashioned corded, single-line phone is useful to check for a dial tone.) Try checking Line 2 at another jack, if you have one.
If you do not have a dial tone, find where your service comes in. Open the box and look at the terminals. If you are lucky, you have an RJ11 port. Plug in your test phone in to the Line 2 connection and listen for a dial tone. If there is no dial tone, contact your telephone company. They will fix an outside line problem for free. (Mice and other things can damage the wiring. A lightning strike could damage a filter if you use the line for a high-speed internet connection.) If the terminal doesn't have an RJ-11 plug option, you will need to ask your telephone company to test the line.
If you recently had work done on the phone line, check for any wires that are loose. When we got our phone line upgraded to fiber optics, one of the telephone jack lines didn't get connected to the terminal in the new box. We found the wire behind the vinyl siding and got signal as soon as the wire was reconnected.)
If you have a dial tone at the box and no wires are obviously disconnected, you'll need to trace the wires inside to find a broken connection. If one jack worked for Line 2 and another didn't, check inside the wall plate. There are two wall-plate styles. The ones with a keystone jack needs the conductor wires pushed down into the correct slots. A punch-down tool is available from most hardware stores in the wiring section. The screw terminal type requires the individual wires to be stripped and then secured. The correct terminal positions are shown here: http://www.lanshack.com/wire_phone_jack.aspx . Otherwise, you need to trace the wires in the walls to find the break in the continuity. Your phone company will do this for you for a fee. If you have a line filter inside, try replacing it.

I hope this helps.
Cindy Wells
(I've called the phone company several times when we lost one line. Mice and lightning damage to the filter have both been culprits.)

Jul 08, 2013 | Lands Phones

1 Answer

I have an HP 2510 printer. I cannot use it to fax because once I plug the phone jack into the printer I get a busy signal. If I plug the jack into a phone, it works fine. How do I get the printer to...


Hi irwinbadin,

HP fax products are designed so that other telephone equipment can be connected on the same line as the fax. The unit must be connected first using a two-conductor fax/phone cable like the one that shipped with the HP product. Using a four-conductor telephone cable may cause problems receiving faxes or calls.

There are two different types of phone cables. There are two-conductor phone cables like what originally shipped with the HP fax product and there are four-conductor cables. HP fax products are designed to work with a two-conductor phone cable. Look at the end of the cable and verify that it has only two copper leads or wires. Replace any four-conductor cables with a two-conductor cable. Only two-conductor phone cables should be used to connect the all-in-one to the phone line.

Figure 1: The difference between a two-conductor phone cable and a four-conductor phone cable
reyjoshua07_5.jpg


Step one: Connect the phone line to the fax
The fax will have two or three sockets (or jacks) for phone lines. Some of these may have a removable plastic plug in them. These sockets will be labeled with text, To Wall Jack , or with a graphic of the wall jack. See Figure 1 below.

Plug the two-conductor telephone cable that came with the HP product into the telephone wall jack. Then, plug it into this socket as shown below.

reyjoshua07_6.jpg


In areas with above ground telephone lines and electrical storms (lightning), it is a good idea to purchase a telephone line surge suppressor and connect it between the telephone wall jack and the fax. This will help prevent damage to the fax from a lightning-caused power surge on the phone line.

Step two: Add other phone-line devices
To connect other telephone devices, use the other socket (or sockets) on the fax. These are identified by text or with a graphic of a telephone and/or computer.

Connect a caller ID unit between the fax and the telephone.
Use the information below that matches the devices you need to connect.

Fax and telephone
Connect a single-line telephone to one of the added sockets on the fax. The telephone will share the same phone line as the fax. See the illustration below.

reyjoshua07_7.jpg


Fax, answering machine, and telephone
When a telephone answering machine and telephone are connected, connect the answering machine to the fax and then connect the telephone to the answering machine as shown below.

reyjoshua07_8.jpg


Fax and computer modem
To use a fax and a computer modem on the same phone line, connect the fax to the computer modem. The modem socket on the computer may be labeled Line or Wall jack .

reyjoshua07_9.jpg


Fax, computer modem, and telephone
To use a computer modem and a telephone with the fax, connect the computer modem to the fax. Then, connect the telephone into the second phone line connector on the computer modem or the third fax socket (if it is available). The image below shows how to connect a computer and a telephone to a fax with two sockets.

reyjoshua07_10.jpg


Fax, modem, answering machine, and telephone
The image below shows how to connect a computer modem, answering machine, and telephone to a fax. Connect the computer modem to the fax, then connect the answering machine to the computer, and finally, connect the telephone to the answering machine.
If the fax has three phone line sockets instead of two, some of the devices can be connected to the other phone socket on the fax.

reyjoshua07_11.jpg


Hope it helps.

Thank you for using FixYa.

Jun 27, 2011 | Office Equipment & Supplies

1 Answer

Have a 3010 SD and only line 1 rings, there are 4 lines.


The telephone has several capacities mentioned as four lines where each would have been networked a separate devices to attain voice communcations. The telephone service provider usually would request to either install at the location several beyound online jack to make possible several entities communcations. Also, the phone with several line becomes useful in situations where several office spaces require communcations sharing from the same telephone. Considering the number of lines that the telephone provider made avilable at the location, the telephone feature buttons can be used to select several lines of choice only that all four becomes tasked when four telephone connection jacks were established.

Feb 15, 2011 | Toshiba DKT 3010 Corded Phone

1 Answer

Does the comdial 8324sj-fb have a headset jack on the base?


I can help you with your Comdial 8324sj-fb phone question.

Yes, there are three jacks on the bottom of the Comdial 8324sj-fb: One is for the line cord, the second is for the handset, and the third is for a headset.

I hope that helps.
_____________________________________
Comdial 8324S Station Manual Download
Comdial 8324S Reference Manual Download

May 27, 2010 | Comdial Impact 8324SJ-FB Corded Phone

1 Answer

I have an old Comdial Executech 308B system. I ju...


Let me think. On the face of the cabinet, there are 10 or so modular jacks, one for every 2 lines and one for the 8 stations. If you plug the lines into a regular (not Comdial) phone, do you still get a dial tone?
You would get lines 1 and 3, as line 2 would be the second pair of the first jack.

If the box still lights up, I'm guessing that whatever fed dial tone into those lines got disconnected. Is this the part where you tell us you went to VoIP or cable dial tone and they disconnected the local phone company interface?

May 20, 2010 | Lands Phones

1 Answer

How do I change display name on a Comdial Impact phone.


The Small Office lite is the voicemail system are you trying to change the name on the voicemail or the telephone set. There should be a comdial cabinet hanging on a wall if you look on the right hand side of the cabinet there should be a sticker with a american flag on it this sticker will tell you model

Jan 14, 2010 | Comdial 8024-S Impact 24-Line Phone

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