Question about Uniden Cordless Phone

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What do you check when the phone lists a message of "Check TEL Line"? The phone cord in plugged in so I'm not sure where to go from here. I have a model DECT1480

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Usually this means that the phone isn't detecting a dial tone. For diagnostic purposes, I like an old corded phone.

First try a new telephone cable between the jack and the phone. Then try the old phone and see if you have a dial tone. If you have a dial tone with the old phone but not the cordless, then the Uniden needs service. These phones are not designed to be fixed by the user. If the phone is under warranty, send it in. (see page 28 of the manual www.uniden.com/pdf/DECT1480-3om.pdf )

If neither phone gets a dial tone, check at another jack if you have several to see if the jack is the problem or if it is a more global problem. If the problem is at one jack, you may want to open the jack and check for a loose wire. Some wall plates hold the wires with screws; others use a keystone jack with the wires pressed into slots using a "punch down tool". Keystone jacks do not need the insulator removed from the individual wires. For the screw connectors, you do need strip the individual wires. The punch down tool is available at many hardware stores in the electrical section (for wiring homes for ethernet and other services).

If you do not have a dial tone at another jack, find where your telephone service comes into your home. Open the panel and identify how the connection is set up. Some use RJ-11 jacks. In that case, plug in your test phone and see if there is a dial tone at that point. If there is no dial tone, contact your phone company for service. There is a break in the wires coming into your home. The phone company will fix this for free. (If the service doesn't use an RJ-11 jack, you need a special adapter to test at this point. Your phone company technicians will have this.)

If there is a dial tone at the incoming service, you have a inside wiring problem. Check any visible phone wiring for damage to the insulation. If the problem is with wiring inside a wall past the jack, you will need a professional to track the break. Your phone company will fix this for a fee.

I hope this helps.

Cindy Wells

Posted on Dec 29, 2010

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1. Plug in a basic phone to make sure the line really is working.
2. Check the phone cord is connected to the correct socket (probably marked line)
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Hello,

What you need to do first of all , put of the phone then disconnect it from the power supply allow he phone for about five minute ,then put it on again check the phone respond on your command if the problem remain same or solve.

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This generally indicates a phone line tha is dead. It may have timed out because a phone on the line has been left or knocked "off-hook". If so hangup the offending phone. In a short time the problem will self-correct. Beyond that, unplug ALL the phone appliences ( Fax,Computer, phones) Then, after waiting about 5min plug in 1 phone to see if it works. If that worked, re plug in the remaining items 1 at a time checking that the phone still works. If it quits, the last item you plugged in is likely causing the trouble.If the phone did not work, then go to the demarcation test box(ouside where the phone line comes in) open the portion which does NOT have the tamper proof screw. Unplug the short jumper wire and plug in a telephone. If the phone works there, the incoming phone service is ok, if it doesn't work call for service. If callers have complained tha you seem to pick up then immediately hang up, clean accumulated dust from jacks that are on outside walls particularly any near humidfiers tha may have caused the dust to become conductive. (a vacume cleaner should work) PS look for chewed cords (cats, dogs)

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The telephone cord may not be connected correctly.
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  2. Insert one end of the cord to the TEL LINE jack on the base.
  3. Make sure that the cord is inserted correctly in the TEL LINE jack on the phone.
  4. When you insert the cord you should hear a click.
  5. Insert the other end of the cord to the wall jack.
  6. Make sure cord is inserted correctly.
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You can remove your telephone line from the base unit and fix it to stranded telephone unit and hear the dial tone.If it heard then some inductor or else part may be broken inside the base unit due high current surge.If the dial tone didn't heard from the other phone also check for the corroded line cord or modular box fault with the tel line.There should be 30 Volt-50Volt D.C.Voltage at your wire ends.

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