Question about AT&T 5840 5.8GHz Speakerphone/Answering/Caller ID Answering Machine

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As machine window flashing 88 and clicking

I moved my base from one outlet to another. now my phone base is clicking and flashing 88 in the ans maching window, the mailboxes and on/off are flashing as well.

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Re: as machine window flashing 88 and clicking - AT&T 5840 5.8GHz Speakerphone/Answering/Caller ID Answering Machine...

I have same problem how do i fix this

Posted on Sep 30, 2008

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What is meant when screen says out of range

You will need to take your handset closer to the base because the signal is weak and out of range. Try locating the charging base in a more central location. If this doesn't work try this.
You can first try a Basic Reset.
A reset is done by following the below steps:
1. Disconnect the battery from handset(s)
2. Disconnect Phone Cord from wall jack
3. Disconnect Phone cord from base unit
4. Disconnect AC adapter from wall outlet
5. Allow to sit for 30 min
6. Reconnect Phone Cord to base
7. Reconnect Phone cord to wall jack
8. Reconnect AC Adapter to wall outlet
9. Reconnect battery into handset until you click or feel the plug snap into place
10. Re-Register Handset by placing on main base
For more info go to this site
Customer Support

Feb 27, 2015 | Uniden Dect6.0 Digital Answering Syst W...

2 Answers

As machine window flashing 88 and clicking

Disconnect power cable and remove battery, it should reset

Jul 18, 2008 | AT&T 5840 5.8GHz...

1 Answer

No dial tone

at the main base check the wall jacks (you may even want to replace the wires from wall to base)... is base plugged into AC outlet?

Nov 13, 2010 | AT&T DECT 6.0 Cordless Phone System with...

2 Answers

My handset has a blinking icon, indicating not close to base

I found the 800 number to call, spoke to customer service, they gave me the suggestion of unplugging the base from the outlet, removing the batteries from the handset, wait 5 minutes and plug in and put in the batteries. Yes, that fixed it. And then the customer service technician called back later to see if it had worked. I thought that was above and beyond the call of duty. Certainly a good way to win customers!

Jan 22, 2009 | Panasonic DECT 6.0 Expandable Cordless...

1 Answer

Base reads e4

Base unit display flashing "8" and "88" repeatedly and then after several minuteseventually displays "E4" steadily. none of the keypad inputs register - unit is basically non funtioning with the exception of the display. no dial tone on base unit or on any of the handhelds. Manuall trouble shooting guide has no suggestions for this conditions nor does it contain any error code definitions. Have unplugger and replugged unit power source (to see if it would possibly reset) with same results. Would appreciate any assistance or suggestions you could offer.
Thank you.

Jan 05, 2009 | Uniden 5.8GHz Expandable Cordless Phone...

3 Answers

I have a TWX955 cordless phone. one of the recievers is a waterproof phone. Instructions said the rechargeable battery was already in the phone. (all of the other phones required me to install the battery...

Take the cradle for the waterproof phone and plug it into the outlet close to the answering machine base. Hold the waterproof phone in one hand, with the other press the "menu" button, press up to the "register phone", then press "menu" again. The answering machine base should say "registering phone". Once it does press the "#" key on the waterproof phone and it should say registering phone. When they beep the waterproof phone should be working. The reset instructions in the owners manual may work if you move the WP phone and cradle close to the base. I stumbled onto this method after reading about a newer model. As i took the WP phone downstairs the # key would activate the registering feature but would when I walked back upstairs. So i figured Id take both downstairs and BAMMM, it worked. Good Luck all! BTW mine came with a battery, and uniden probably hasnt figured this out either.

Dec 26, 2008 | Uniden 5.8GHz Expandable Cordless Phone...

5 Answers

ATT 5840 Base reset code/procedure

document.write(parent.prscreen) Try this to get it working. Relocate the handset(s) closer to the main base.

Check for any lights on the base including charge, intercom, and channel lights (if applicable to the model).

Re-cradle the handset on the base for 15 seconds. Lift the handset and press PHONE.

Unplug the AC adapter from the main base unit and take out the battery from the handset. Leave it unplugged for 15 seconds. Plug the handset battery in and re-cradle the handset. Plug back the AC adapter in and wait for 15 seconds.

Try to de-register the handsets by following the steps below:

1. Using the soft keys on the base located below the base screen, press MENU
2. Press the down arrow once until BASE SETTINGS is highlighted.
3. Press the OK soft key.
4. On the base, press MUTE 3 times and FLASH twice. This will
deregister the unit.

Below are steps on how to re-register the handsets:

1. Make sure to charge the handset battery pack at least 12 hours.
2. Using the soft keys on the base located below the base screen, press MENU.
3. Use the up or down arrow keys to select DISPLAY BASE ID.
4. Press OK. The base screen will display the 15-digit Base ID
code for about 30 seconds, then the unit returns to the idle
screen. Write down the Base ID code on a piece of paper.
5. At the cordless handset, use the soft key to select NEW.
6. Enter the 15-digit Base ID code using the number keypad.
7. Use the soft key to select OK. The screen displays PLEASE
8. After about 45 seconds, the screen displays FOUND BASE. If the handset displays BASE BUSY TRY LATER, the base is in

Other products that use the 5.8GHz band can interfere with the use of this phone. These products or equipments include: radio towers, page towers, cellular Phones, other 5.8GHz cordless phones, intercoms, or monitors. If any of these are in the area, they may interfere with the performance of the phone. Try relocating the phone.

Video displays, Televisions or Personal Computers can cause
interference on the phone if it is plugged in electrically with one of this equipment (typically on a power strip or extension cord). Please relocate the phone to an AC outlet without any other major appliance plugged in.
You can also relocate the base to another room.

Relocate the phone out of the kitchen area. Appliances may cause interference.

If the charge light does not remain on, clean the handset and base charging contacts using a pencil eraser. If it comes on after cleaning the contacts, you may need to charge the unit for 10 hours.

Make sure that the AC power cord is securely plugged into the base. If unsuccessful, plug the unit into a different known working outlet or turn on the switch on the power strip.

Dec 19, 2007 | AT&T 5840 5.8GHz...

2 Answers

Radio Shack 43-3880 5.8GHz digital answering system - error codes

Well, bad news! After taking my phone to Radio Shack and allowing them about 30 min. to identify the issue, the result was that an E4 error means a non-repairable internal problem. If the phone is less than a year old, and you have a receipt, it is covered by warranty.

Oct 29, 2007 | Answering Machines

1 Answer

ATT 5840 answering machine

you need to reset the cordless phone. This sounds like a lightning strike , if it was the phone is finished. Unplug it , wait 20 seconds and plug it back in again.

Oct 18, 2007 | AT&T 5840 5.8GHz...

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