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Receiving a fax is more complicated than sending. For instance, if there are other devices on the same line, one of them may be interfering with reception but not with sending.
On the other hand, the digital lines can have problems with one direction, but not the other (i.e. sending working only, or receiving working only.)
That problem, with digital lines, is best treated by lowering the TX/RX (or Transmit) Speed on the fax's settings (if the model you have has such settings... or being that it is a Canon machine, probably only this is available:) ...or disabling the ECM Mode setting. That may allow full faxing operation.
If the line is COX, then it is presumably a digital/VoIP/similar phone line service.
Is your internet service working otherwise? No problems with throughput, nor with the internet 'pausing' for a bit? if there are such problems, they will definitely interfere a lot with faxing over a digital phone line that works via internet service.
How old is the printer? if the problem should turn out to be with the printer, then if it is younger than a year old (measured from date of purchase), its repair will be covered by warranty, if you contact 1-800-OK-CANON.
Let me know the details I have asked about, and I will advise you further.
(I regret that I am not able to offer Live Phone Call service at this time; However, your request is still open to other Experts in this category, and one of them may pick up on it at any time.)
I will continue to help you through this interface, if you can tell me the
- whether COX also provides internet, or if there is a 'box' that COX provided
- age of the Canon machine.
OK. If the receiving of faxes worked OK before, using COX's line, then the printer is more likely to have a problem, at the level of electronics failure, if it is 5 years old.
I advise you to call the COX line with your cell phone (if you have one) in order to see whether, by listening, there is any response, and whether the line works basically, etc.
Let me know - if you can make that test - what you hear on the line, please.
OK, good so far.
Have you checked the Receive Fax settings ?
Are you sure there is no other phone device on the line (though you did say you picked up on the call with the Canon machine) ?
Then given that it worked for years, a base phone was the only other device on the line, and then given that Scan is not working to the computer... there may well be something wrong with the Canon machine, I'm sorry to say.
It may need to be repair-serviced, or replaced, if you want to use the fax function. The signs all seem to point that way.
The fax line does not go through the computer, does it?
Because if so, then the computer's software would not be involved - ? or maybe I missed something about your setup. Do you use PC-Faxing software, perhaps?
I'm still not understanding your fax hookup.
You now have WiFi so you now have to check every fax to see if needed - ? that's the part I don't get.
I was thinking of asking (since you said, upon some review and reflection, that you had unplugged the fax, then plugged it back in later) whether you had plugged the line to the phone service, back into the right jack of two.
If you plugged the phone line into the 'PHONE' or 'P' jack, having the receiving of faxes blocked might well be the result.
Make sure the line or cable that goes to the phone service, is plugged into the 'L' or 'LINE' jack. The 'PHONE' jack is the extension phone handsets, not the phone line.
I'm glad it's working.
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Then the Canon machine needed a reset, evidently.
Good to know its working again.
Thank you for asking your question here at JustAnswer.com.