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Magicjack problems I can not hear the person clearly I'm speaking with, and it is especially bad when I have serveral windows open it is really bad. My voice and the callers voice is skipping and going in and out of volume. What can I do to fix this problem. Also, calls are rarely clear when I have one window open. I am running windows vista.

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  • Anonymous Oct 09, 2008

    I also have problems with my long distance call. I break up and they can only hear parts of my sentences

  • Anonymous Oct 22, 2008

    Yes, me too, it is terrible. I quit using it because my wife was getting too frustrated.

  • alqu1 Nov 07, 2008


  • Doinmusic Nov 10, 2008

    My Magic Jack phone service is always intermittent. All voices are rhythmically broken up. And I can not find any help from the company online

  • mountain22 Nov 20, 2008

    I have an a/c usp hub and i still get skipping of my speach and skipping of the other person i am talking to.

  • Anonymous Dec 25, 2008

    MagicJack worked great from July 08' through November 08.' Then in December 08' the ring tone started crackling and dropping out every second. Likewise the people's speech was dropping out every 3rd word. The signal seems to be constantly like that now. Not worth keeping at this rate.

  • Anonymous Jan 02, 2009

    error 9

  • Anonymous Jan 10, 2009

    Breaks up real bad cuts in and out

  • Anonymous Jan 17, 2009

    It is to the point where I don't use it any more. It was great for about 3 weeks.

  • Anonymous Feb 24, 2009

    I can not hear the person clearly I'm speaking with, and it is
    especially bad when I have serveral windows open. The callers voice is skipping and going in and out of volume.
    What can I do to fix this problem. Also, calls are rarely clear when I
    have one window open. I am running windows vista. I had windows xp before and the magicjack worked great.


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 Magicjack customers with problems need to but a 

A/C USB adapter
This will help alot will cost you around $7.00

Posted on Nov 12, 2008

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Also, be sure you are plugging your MagicJack into the USB Ports on the BACK of your computer WITHOUT the Extension Cable. The ports on back tend to have more power to support the demands of the MagicJack. This has cleared up ALL my crackling and voice dropping problems.

Posted on Feb 11, 2009

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MagicJack seems to want to own the system; it doesn't seem to like much else going on when you call, which can be frustrating. When I call, I have a second computer dedicate itself to that purpose. It seems to solve a lot of these connection issues. The dedicated computer can be an older slower model. I'm going to run the Magic Jack on an old Pentium 3 running at 777Mhz to see how it works. It's the internet connection that's important here, not the computer and even an old 486 I add this about old computers because you can pick them up cheap or you might just have one collecting dust in the garage. I do strongly suggest that it run Windows XP or at worst Windows 2000.

Also, Windows XP limits concurrent TCP connections to 10, which is absurdly low, and I think this may be part of the reason for some of the problems. You can download and run TCP Optimizer at to optimize tcp settings.

One last thought: Your firewall may be blocking it. For some reason, on 1 computer, my firewall let parts of the MagicJack connections through on some ports but blocked others. However, I think this was a problem with my computer not the firewall, but it is worth mentioning.

Posted on Dec 28, 2008

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I experienced this problem repeatedly and discovered that it has to do with multiple copies of the magicjack software running at the same time.

If you switch users without completely logging out first then the new user will have a duplicate copy of the magicjack software start up. This is what causes the problem you described.

To prevent this either log out completely before logging in a new user (a pain since you can't make or answer any calls while the software is restarting) or just use the task manager (ctl-alt-del) and kill the new, duplicate magicjack process (it won't show up under applications). I've come back to the family computer and found 3 different users logged in at once (and no one sitting at the computer!) and in the task manager there's 3 copies of magicjack running (click the check box to "show processes from all users"). If you use a user account with admin privileges then you can kill all the duplicates from the other users, otherwise each user has to be logged in again and logged back out completely (or use the task manager) to kill the duplicate processes.

For me killing the duplicate process is the easiest and least obstructive way to handle it on a multiuser computer.

A third way would be to use a dedicated computer that is always on and never changes users. If you have multiple computers in the house then this is actually not a bad solution.

Posted on Jul 14, 2009

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I had this problem and discovered it had to do with internet speed. You can actually test to see if that is the problem. I suggest the following. Close all applications except magicjack. Start an internet browser (explorer or firefox).
go to
Place a magic jack phone call.
While talking on the phone, click begin test.
If the speed of the internet service is the problem your voice will break up to the other party during an upload test but get better once the upload test completes. The reverse will happen during the download test. The other persons voice will break up. If this happens you probably need faster internet service. If the call is ok when the test is finished, you speed is ok as long as you do not do anything else on the internet. Keep in mind that even if you are not doing anything with a browser, other running programs can be using the net. One example would be Outlook, It will go to your email account and sync folders. I have read that 256k upload and download is good enough. I have 256 K upload and 2Meg download. When I do the test, my voice breaks up during the upload. During the download the test doesn't affect the call.

Posted on Jun 30, 2010

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A few of the users that I have helped with their audio problems simply had their 'softphone' set for headset & microphone instead of stand alone telephone set.

Simply click on the Menu button, then click on volume/headset control in the dialog box, then chose your device [telephone] button and close the dialog box. Their audio problems ended with those instructions.

Posted on Dec 28, 2008

  • ewbray Dec 28, 2008

    After the user has connected the magicJack® dongle for the first time, registered the device, and has the 'softphone' on the screen, the user should probably run TCP Optimizer to “tune” the computer to work with it in an efficient manner; it can be downloaded from the following website:

    The program can aid both the novice and the advanced user in tweaking related TCP/IP parameters in the Windows Registry, making it easy to tune your system to the type of Internet connection used. The tool uses advanced algorithms, and the bandwidth delay product to find the best TCP Window for your specific connection speed. It provides for easy tuning of all related TCP/IP parameters, such as MTU, RWIN, and even advanced ones like QoS and ToS/Diffserv prioritization. The program works with all current versions of Windows, and includes additional tools, such as testing average latency over multiple hosts, and finding the largest possible packet size (MTU).

    The user can use the TCP Optimizer by following these short instructions:

    1. Choose the maximum Connection Speed from the slider bar (the maximum available bandwidth, in kilobits per second)

    2. Choose the Network Interface, or check to Modify All Network Adapters

    3. Pick "Optimal settings" from the radio-buttons near the bottom of the program

    4. Click on the "Apply changes" button and reboot


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