Question about Grandstream HandyTone HT-486 Analog / Digital Phone Line Converter

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I have grandstream ht 486 and i got this adpter from mpingi and now i want to use this adpter with freecall service so i want to unlock this adpter so how to do this?

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Posted on Jul 21, 2010

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Aug 08, 2011 | Grandstream HandyTone HT-486 Analog /...

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My handy tone-486 box keeps flashing red every 3 seconds and I have no dial tone. My internet works and I have power and a working phone line to the box. Help.

Lifted this straight from the manual:

Button flashes every 4 seconds
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HT–486 fails to register

So basicly, that means your HandyTone 486 ATA fails to register with the SIP-server. That means you either have not recieved your IP-tele yet, or that your ISP have failed to register you.

Mar 04, 2010 | Grandstream HandyTone 486 ATA (HTATA486)

1 Answer

A wrong pass word was entered and the devise was can i access the device again?

you would need to factory reset the adapter if you dial *** then 02 it will give you ip address now if you put the ip address into your main web browser it will pull up a configuration page for your handy tone you will see a tab on the left hand side that says reset click that and factory reset the device this should wipe out all current configurations on tht device

Oct 07, 2009 | Grandstream HandyTone 486 ATA (HTATA486)

2 Answers


did'nt get ya

throw some light on it!

you know what sometimes virus/spywares/adwares can slow down you're pc to 486 pc's lol

so do a clean instalation + format ya whole HDD and recreate partitions + when you install windows the 1st thing you've to do is that install Symantec Endpoint Protection or BitDefender Total Security on ya pc

hope it'd be helpfull :)


Jul 04, 2008 | Toshiba PCX1100U High Speed Cable Modem

1 Answer

Password for 486

Remove the battery from the mother board.
Jumper the CMOS to discharge it. You may
want to check you Mother Board manual, to
see which jumper it is. Some require you to
turn the Mother Board BACK ON for two seconds. (It will NOT come up, just will
discharge the CMOS and the battery will NOT
be there to replace the energy, so everything
is GONE. You will know if you have done it right, when
you boot up again, the BIOS will NOT recognize the hard disk (need to set it up
again), the date will be wrong (set it up again also) and the floppy drive will not
be recognized (new setup). But then try your password. It should let
you right in then. Let me know if it works. Best Regards, PS Make sure you have the right mother
board jumpers to discharge the CMOS, YOU
CAN DO DAMAGE ALSO, if they are not the
right ones.

Jan 25, 2008 | Grandstream HandyTone 486 ATA (HTATA486)

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