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New Contributor
Posts: 1
Registered: ‎06-08-2014

How do I stop my MX870 fax from interrupting calls?

[ Edited ]

My parents have an MX870 Printer/scanner/fax, and it's hooked up to receive faxes. For years now, my mother has dealt with the thing interrupting calls on a very, very frequent basis. If it's any indication of the frequency, I usually can't get through a 20 minute call to her without the thing interrupting it with fax noises and disconnecting the call.

Does anyone know a solution other than disconnecting the fax? It's not the newest machine, but I'm pretty sure they wont be getting a new one any time soon. And they do receive faxes occasionally, so they I don't think they want to disconnect it entirely. I know almost nothing about fax machines and very little about printers. I've never owned a canon. But I'm hoping to help them out if I can. Any solutions?



Product Expert
Posts: 1,989
Registered: ‎10-17-2012

Re: How do I stop my MX870 fax from interrupting calls?

Hi Carrolls355,


Adjusting the Manual/Auto Switch setting should resolve the issue you are experiencing.  To do this, please follow the steps located at the link below:


PIXMA MX870 Adjusting Manual/Auto Switch Setting


Hope this helps!


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