Second phone not working.

Is it in airplane mode?

try changing phone to tone dialing . one phone line has been setup for Decadic dialing and the other line may be setup for tone dialing.
If tone dialing is working on one line but not the other then get phone company to change the dialing type on the phone line.
Dual tone multi frequency is the technical name for tone dialing and is more efficient than decadic dialing or pulse dialing.

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.

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.

Hello. If everything else is working, printing and copying, unplug the printer from the power source. Check the telephone line from your phone company by unplugging the fax machine from the wall jack where it is connected to. Plug a telephone device straight to that wall jack and check for a dial tone. If there's no dial tone, contact your phone company. If there is, plug the fax machine back to that wall jack. You can also try replacing the telephone cable with a another known working cable. Plug the printer back to the power source. Check again. Hope this helps.

Lifted this straight from the manual:

Button flashes every 4 seconds
(if SIP server is configured)
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.

remove battry reset

my phone has a dial tone but wont dial out or recieve calls.

Are you plugged into the LINE port?

I'm no expert but, did you try touching the online or hook button on the fax to hear the dial tone? Or connect a basic home phone into the phone jack at the wall the fax was plugged into. Do you get a dial tone. If no dial tone, call the phone company. If there is a dial tone, its the fax.