Question about Uniden Cordless phone EXS9950

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Light flases at base LED says "In Use" when PU line no dial tone.

No other phones in use have unpluged AC unit from wall. Line two works fine.

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  • donguy107 Sep 30, 2008

    holding down find phone as suggested did not cure the problem. Line 1 is still flashing and no dial tone.



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I'd check the wiring on the back of the phone first. The cable that runs from the wall socket to your phone. This cable may have a bad connection, bent contact, or possibly just a broken wire. Try replacing it first (that's the actual phone cord, not the AC cord).

Next, make sure the contacts on both the wall jack and your phones base is clean. These connections can become dirty over times and cause this type of problem.

You may also have a wet box outside. If your lines come through an external box, you should check to see if something is shorting out in the box. The wiring from the box and into your home are your responsibility according to most phone companies, and one short in the line anywhere can cause this problem. I'd first check by doing this.

If all else fails, try determining the problem in the following steps.

1 : Try each individual jack for line 1, as just one may be causing a problem.
2 : Disconnect every phone on line 1 and use a phone you know works (probably on line 2 right now) and test the jacks.
3 : Use a non-cordless phone on each jack; possibly a problem somewhere there.

If all else fails, and the phone still doesn't work on line 2, but does work on line 1.. It's time to check the actual jacks. As I mentioned before, a short anywhere can cause a problem on the entire line. So, take off the covers of each jack and check the wiring. There should only be four wires on each, and make sure they are all properly connected and secure to the input base. It's possible that time has broken a connection or caused corrosion enough to short it out.

If you STILL have problems; I'd say it's time to call a professional. Someone who knows a good bit about wire testing and can find the problem with a resistance metering device. Using one of these tools you can pinpoint a feed that is going bad which is causing the entire problem. Hopefully it isn't this far, but it is possible.

I hope these solutions help you resolve the problem. Just remember this when working with phone lines, if the phone works on a different line it isn't the phone. Just one short on any jack or connection can cause this type of problem where the phone is actually activated and not going to receive a dial tone (which will result in the "in use" error). So, it's most likely going to result into some trial and error starting with the simplest cable replacements first and going on to more detailed problem solving! I hope this helps bud!

Posted on Sep 30, 2008

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He charge/in use light on the base of your phone flashes whenever you have messages waiting in your voice mailbox for voicemail through your phone company. You may need to occasionally reset the indicator if it remains on after you have retrieved your messages. To reset the indicator, press and hold find handset for 5 seconds.

Posted on Sep 30, 2008

  • Anand Kumar
    Anand Kumar Sep 30, 2008

    Check the line one with other phone if its as a dial tone ,if does not have a dial tone then you need to contact the telephone company ,if it as a dial tone then ,remove all the batteries from the phone wait for 30 min and then connect it back and check if its working .....



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1 Answer

How do I know if my phone base is faulty on my house phone, it says "no line" and the lights are working. I have tried reset. Any ideas?

Unplug it from the connection at the wall and use another phone to see if the phone wiring in the house works. If you don't hear dial tone in the test phone, then the problem is the wiring in the house or the phone lines. If you hear dial tone then the problem is in the base of the other phone.

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My phone says check tel line.

I have a similar model from the same manufacturer.

You've got the AC adapter plugged into the wall and the phone base, and the phone wire with std. phone connectors plugged into your phone jack and phone base, and it's still not working.

This can happen if the phone line is not active, or if the "pair" of wires is reversed (which is how DSL worked exclusively for years). Ultimately, it's not sensing a dial tone on the line you're base is plugged into.

First, make sure you can hook up a std. phone handset, if you have one, to the active phone line wire and plug to make sure the line and wire can result in a dial tone. Then, unplug that phone and plug in your new base. You should now be able to use the phone.

If, for any reason, you can't get a dial tone, it may be possible the plug you're using had a two-line phone plugged into it previously, which places the other line on another pair within the 4 wires for that type of plug. In other words, the active wires you want are in the wrong place for the phone to access.

I would recommend taking this handset to a phone jack you know to work fine with a single-line phone, near an AC outlet, and give it a try there like I outlined above. If it works there, then it's just the phone jack and maybe wiring position that is your issue.

You can also find at many hardware and electronic stores a simple phone line checker. It's a small box with some lights on it, with a short phone cable and plug coming out of the other end. You plug this into your phone line jack, and it tells you if the phone wires are wired correctly (typically a green light), or crossed (red light). This may be the source of your problem.

I hope this helps!

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My phone doesn't have dial tone. Each time I dial a number and try to call,it wont work. I call my phone but it wont ring. I need help on this. What happen to the phone? Or what should I do?

If you have another phone connect it to the wall outlet to see if you get a dial tone. This will indicate if your base unit is faulty.
Check the power adapter to the base unit, make sure it is getting mains power.
If the base unit has dual phone lines and if line 1 is only connected and the line 2 has beed selected then you cannot get a dial tone. In the chase press the line 1 to get a dial tone.
If your base unit has only one line then check the phone line at the wall socket make sure it is plugged in tight, also check the the connection at the base unit.
If this does not work then ring the phone company and get the to test your phone line, you may have a faulty line to your home.

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The phone lights up when put to charge also the red light on the base,, but when the phone line is connected it wont work ..What do u think is the problem?

The battery in the handset could be bad . First I would test that the base unit is recieving dial tone by pressing speaker button on base unit. If there is dial tone then problem is in handset or in base unit communication to handset. Try resetting power to base unit. Check manual for any re-initialization procedure. If the base unit is not receiving dial tone then I would test that the phone line is delivering dial tone to the base unit by connecting a known good phone to the line cord. If the dial tone is not present , problem could be in line cord from outlet, outlet, building wiring, or service provider.

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L7780 cannot get dial tone on 2-line outlet. Are there any work arounds to this problem?

There is a problem either with the Line Interface Unit (LIU, also known as the fax/phone line connector) or the fax hardware, because the unit is having problems sending or receiving faxes. The unit may hang on "Initializing." This document explains how to troubleshoot the LIU and fax hardware. SOLUTION: Please perform the following: Front panel hangs on "Initializing"
  1. Pull the power cord connector from the back of the base unit to recover from the error.
  2. Unplug the LIU from the back of the ADF. It is located on the left side (facing it), and is where you plug in the telephone lines.
  3. Plug the power cord back in, power it up, and see if it hangs without the LIU inserted.
  4. If it does not hang without the LIU inserted, power the unit down, plug the LIU back in, and power it back up. If it hangs, the LIU is faulty.
  5. If it does hang without the LIU attached, unplug the ADF from the base and see if it hangs. If it does, the base is faulty.
Testing the LIU The primary test for the LIU is whether or not you get a dial tone. Sometimes, you need to re-seat the phone line several times to get a good connection. If after trying the things below, there is still no dial tone, or initialization hangs, the LIU may need to be replaced.
  1. Verify that the phone line is connected directly from the wall jack to the plug in the LIU that says "To Wall Jack."
  2. Verify that the LIU is plugged securely into the product. If it is not, there will be a message at power-up saying the LIU is not connected. If it is, the date and time will display.
  3. If the LIU was re-seated, cycle the power on the unit. The unit should display the date and time.
  4. Unplug all other accessories, like a telephone answering machine or modem. If the LIU appears to work fine after unplugging them, these accessories may be interfering.
  5. Place a document in the Automatic Document Feeder (ADF). The display will flash "Document Loaded."
  6. Press Start Fax to verify there is a dial tone. If so, try sending a fax.
  7. If there is not a dial tone, unplug the product from the wall jack, and plug in a regular telephone to verify there is a dial tone at the wall jack.
  8. If there is no dial tone on the telephone, the wall jack or phone line may be faulty

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