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Canon m830 faxing problems

I am having problems faxing with my canon m830 fax. I was told that the fax would work with my DSL line by the Ameritec guy. I just tried to use it and I am getting a tone similar to a dial tone but the fax will not go through and the "tone" does not ever go away even after the number has dialed on the fax. What am I doing wrong????


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Do you have a filter on the line? Also make sure the phone line from the wall is plugged into the jack in the back of the machine marked "line" and not "phone"

Posted on Dec 07, 2007


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Do you have DSL internet coming into the location where you are attempting to use the FAX machine? The reason I ask is because, if that is true, you may have a filter to reduce noise and that may be causing problems. I have DSL and whenever I use my FAX machine I have to unplug the filter from the phone wall receptacle and plug the fax line straight into the wall phone receptacle. Here is a photo of what
you may find if you have DSL.


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How do you have DSL without a landline? Are you able to make and receive phone calls? If so then the fax should work just fine. It doesn't matter to the fax machine if your phone jack is connected to old-style copper wire, DSL, or fiber-optics. On the other hand, if you can't make and receive phone calls then you can't send and receive faxes either.

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Can canon mf4370 fax on dsl line

Fax machine operation can be interrupted by DSL lines, however, because the DSL signal is also transmitted through phone wiring. This can result in a loss of data in the fax if steps are not taken to prevent it. Fortunately, this is not a difficult thing to fix.

Items you will need

  • DSL filter
Step 1

Unplug the fax machine from the phone jack.
Step 2

Plug your DSL filter into the phone jack. DSL filters are specifically designed to eliminate interference from the DSL line on your phone line.
Step 3

Plug the fax machine into the phone line jack on the DSL filter. You can now use your fax machine and DSL line at the same time without risk of data loss or interference.

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I cant seem to send a fax on my dsl line I have a hp640

DSL is DIGITAL. All fax machines are ANALOG. It won't work reliably.

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I have a Cannon MX310 printer, fax , copier. I cannot receive faxes. Can it have something to do with the fact that I have digital phone service, what setting does it need to work.

You might try a DSL phone filter to eliminate extraneous noise on the digital line. My digital phone line had constant, repetitave clicking noise until I installed a DSL filter. Have you tried calling your fax number from a cell phone to see if there is noise on the line and or if the fax will pick up?

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Unless that phone line is filtered in a back room somewhere, that could be the reason why it isn't working. The best way to find out is to put your fax machine onto on hook dial mode and listen for the tone. If you don't hear one, your fax line isn't filtered and needs a filter in order to use the line for faxing.

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1 Answer

No filter

There you go. Stop by Radio Shack and pick up a DSL filter and hook it up to the wall outlet of your fax machine. If the DSL modem is next to your fax machine, plug the fax machine into the outlet marked as phone.

I just got done doing this to both of my offices. Typically the phone company will use your fax line to piggyback the DSL. All you have to do is make sure your DSL modem output goes to the fax line either through the wiring block in your office or directly to the back of the modem itself.

That way you won't need the filter.

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