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Want to FAX with My MagicJack(VOIP) using a standard FAX machine

I currently have a Panasonic plain paper fax and copier as well as my Lexmark All in one Printer/Fax. I really want to be able to utilize both of my fax setups here at home, but I am aware that Im using a Digital (VOIP) phone line versus an analog fax machine as well as a V.90 56k modem. I can either use my V.90 56K modem through the computer or use my fax machine, which both of them will dial out the number of the other party; but the other partys FAX machine does not recognize the digital signal, so it fails to go through. I have done some research on the problem at hand, I read up on something called an ATA box; but im not sure if thats going to solve my problem or not. I need something thats not to exspensive that will work for home office use. I am running Windows XP service pack 3, and I am using Clearwire Wireless internet access. I understand that using wireless connections arent good either for what im trying to do, but surely it can be done i would think. Please help.



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  • Clifton
    Clifton Jan 02, 2009

    What about using an ATA box? I have looked into this device, but im not sure if this is the right device for the job of course. Digital is digital, you know? I need something to convert the outgoing signal so it can be recognized by other analog fax machines. My stepdad said he sees that type of stuff all the time at offices where he goes to fix their equipment, but the stuff his company sells to fix those issues is very expensive. Any other ideas? I know they sell different types of ATA boxes at different prices, but not sure if thats the answer. I know thats a common issue in businesses that have networks that they want to fax through.

  • hankim Apr 16, 2009

    i have lexmark x7170 all in one fax/scan/copier. i tried to fax using the magicjack, but nothing happened. i can not send nor receive faxes. any solutions to this problem?


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Holy ****, just google 'magic jack fax' and you'll get all the info you need. digital, analog, who cares, just do it.

Posted on Aug 09, 2009

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Im afraid you cannot use the magic jack as a fax feature, though you can use this to place a call but not as a fax, though you can try this steps

  1. Turn off error correction on your fax machine or program
  2. Set the fax machine or program to use the slowest speed available
  3. Increase the speed, checking at each speed that faxes work

Posted on Jan 01, 2009

  • Giulio Moro Dec 16, 2014

    This method does work as I've been using it like this for many years since before MagicJack was being advertised for sale like it is now. Setting the fax to the slowest speed possible does work most of the time, but sometimes the computer being used will garble the data if its slow, or the USB port uses a shared IRQ. Try a different USB port. Sometimes you have to get into the fax service menu to set the fax speed. No worries if it does garble, just resend it for free. An ATA will work just fine for you, but it will not work with MagicJack service as it's not a full or true VOIP service


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Has dail tone no calls out

Is your Magicjack plugged into the wall power thru a power module? Try plugging the magicjack directly into a USB port on your computer. If the magicjack work now, then you have a bad power module.
I had the same problem. My Magicjack was plugged into a wall socket. First the dial tone became inconsistent, then I could no longer make calls out, then it died completely. I plugged the MJ into a USB socket on my computer, and it then worked nomally.

The problem is in the seperate magicjack power supply module.
When the magicjack is plugged into your computer USB port, it is getting power directly from the 5 volt source in the USB port.
In order to use AC wall current to power the magicjack, a power converter module is needed. That module contains a transformer and rectifier that coverts 115V AC into 5V DC. It is that power converter module that is failing.

Tech section:
I decided to trouble shoot the problem. I measured the 5V output of the power module to be only 3.5V. I took the power module apart to figure out why it failed. I found two 220uF 10V capacitors that were labelled "Low ESR" (C8 and C9). I measured the ESR of these caps and C8 measured 1.5 Ohms. I replaced that cap and it fixed the problem. Output voltage restored to 5V. These electrolytic capacitors do not fail suddenly, they gradually deteriorate. The output voltage of the Magicjack power module will drop gradually until it hits a critical level. The MJ will start to behave sporadically, then it will die completely.

I do not recommend repairing these power modules. I did it out of curiosity. These modules are very cheap.
Magicjack is aware of the problem. To contact them, go to and go to "support". They will ship you a new power module for about $5.50. Some people have reported that the replacement modules from Magicjack are no better than the originals and have had repeat failures.
Also, consider getting a power module from another source. There are lots of AC to USB power converter modules available on Ebay for only a few dollars. Search Ebay for "magicjack power adapter".

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you need to sign up for a voip account.

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Fax solution


First check with your voip service provider that they supports T.38 over SIP.

For sending fax you have to enable T.38 (fax protocoll) support in the pap2 webui.

On your fax machine set data speed to 14.400 kb.

But anyway T.38 (fax) over voip is not a waterproof solution, it can only guarantee delivery for about 85 to 95 % of sent\ recived fax's.
Make shure you have a good, fast and stable connection (try pinging the sip server ip). If it doesnt try another fax machine (f.ex Brother or xerox). If that dosent work, and you still have to get a fax service, try a online fax to mail, mail to fax solution (search google).

I can provide more detailed information and how to's if needed.

Jun 05, 2008 | Linksys PAP2

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