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

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AT&T 5840 5.8GHz

Why is my phone flasing all the time and it shows extension in use, and I can't make a call unit flashing says extension in use. no calls out, line busy on inbound calls

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Remove the unit from all the cables ,remove the battery for 30 min and redo the cable and power on the unit ..and check if its display the same message ,try to check the line with other phone to make sure telephone does have the problem...

Posted on Aug 23, 2008

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Try hard reset . take the battery out and restart the phone and then check.

Posted on Aug 23, 2008

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  • AT&T Master
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Try reseting the phone by unpluging it and also removeing the batterys. Il check the manual.

Posted on Aug 23, 2008

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1 Answer

Lights keep flashing


After you connect the AC adapter the display shows Set Clock for 60 seconds and all of the extension indicators flash until you assign the extension number of your unit.

Even if you do not use the intercom, assign the number otherwise all of the extension indicators will continue flashing.

Manual here

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1 Answer

How to flase nokia n79


Hi follow this Click here1......this is the only way if you want to do it by yourself.Otherwise contact mobile repairing shop.To download the flash file follow this All nokia bb5 flash file.Good luck

Jun 07, 2012 | Nokia N79 Cellular Phone

2 Answers

Can not rec a dial tone, phone states no link to base move closer



If “No link to base. Move closer to base, try again.” is displayed
even when using the handset near the base unit, the handset may have lost communication with the base unit. You need to re-register the handset to the base unit.
• Make sure the base unit is not being used.
• Have both handsets and base unit nearby during registration.
• Follow steps 1–3 listed below. You have about 1 minute to complete them.
• Confirm the extension number of the handset which has lost the communication by placing the handset on the base unit or charger.
If you re-register the handset using the other handset’s extension number, the other handset will not function.
• If the handset beeps 3 times and “Error!!” is displayed, an error occurred. Try again from step 1.
• You can stop registration by pressing [OFF] on the handset, and pressing [LOCATOR/INTERCOM] on the base unit.

1 Base unit: Press and hold [LOCATOR/INTERCOM] until a beep sounds.
• The CHARGE indicator flashes.

2 Base unit: Press the extension number [1] (handset symbol 1 ) or [2] (handset symbol 2) of the
handset which has lost the communication.

3 Handset: Press and hold [FLASH/CALL WAIT] until “Handset Registering” is displayed.
• When registration is complete, a beep sounds from the handset and the display shows the number.
• Wait for 20 seconds after registration is complete while the handset establishes communication with the base unit.


• If the handset beeps 3 times and “Error!!” is displayed, an error occurred. Try again from step 1.
• You can stop registration by pressing [OFF] on the handset, and pressing [LOCATOR/INTERCOM] on the base unit.

Feb 23, 2010 | Panasonic KX-TG2357 Cordless Phone

1 Answer

Unit shows 'loading' continuously


This player is equipped to do a self power on test to all pain parts of the player to assertain everything is ok. The blue light will keep flasing until it completes its task and then the blue light will stop flashing and you you can start reusing it.....................sodeep

Jul 30, 2009 | JVC DR-MH30 DVD Recorder

1 Answer

WE HAVE RCA EXECUTIVE SERIES PHONES INTERCOM LIGHT FLASING


RCA Executive Series Phone: How do you place the caller on hold and then intercom to another, then transfer?

Mar 17, 2009 | Lands Phones

1 Answer

Semi Dead Panasonic KX-TGA100N with ''C533'' displayed.


Panasonic KX-TG1050N Cordless Phone. Base handset (No. 1, KX-TGA100N) does not work, no keypad response or dial tone. Green indicator message light ON (should only work with the TG1000N base unit) all the time till battery runs down. Display shows message ?C533?. Can still send and receive calls on extension phones 2 and 3.

Nov 11, 2008 | Panasonic KX TG1000N Cordless Phone

3 Answers

HOLD BUTTON FLASING, MSG ON LCD SCREEN


Try press ICM button # 3 and the ext number of that phone

Jan 31, 2008 | Comdial Digitech 7700S-PG Corded Phone

1 Answer

Programming handset


Put extension phone on base unit; press menu; press 0 0; press and hold intercom until charging light starts flashing. the display should show OK on the display screen of the extension phone; press OK. If you have more than one extension to add:
after you press 00; the symbol for # # # will come up. Enter a number for that extension i.e. 2; 3; or your choice.OK will come up on display at bottom right of display; press ok. hope this helps. This info should come on the extension phone and "menu" is on ext. unit. So turn the display up so you can see it while it is on base unit.

Jan 15, 2008 | Panasonic KX-TG5632 Phone

1 Answer

AT&T 5840 5.8GHz


you have a voice mail message

Jan 10, 2008 | AT&T 5840 5.8GHz...

1 Answer

My USB flase


problem is not with your player but with your computer
do these steps to avoid problem :-
1) open note pad
2) type following into it
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies]
"WriteProtect"=dword:00000000
3) save it as .reg extension
4) make sure extension of file is .reg ( once it in done then note pad icon will change)
5) double click on this icon

this should solve your problem

Jan 05, 2008 | iLO (2 GB) MP3 Player

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